1 // SPDX-License-Identifier: GPL-2.0
2 /******************************************************************************
3 *
4 * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
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
14 u8 RTW_WPA_OUI_TYPE[] = { 0x00, 0x50, 0xf2, 1 };
15 u16 RTW_WPA_VERSION = 1;
16 u8 WPA_AUTH_KEY_MGMT_NONE[] = { 0x00, 0x50, 0xf2, 0 };
17 u8 WPA_AUTH_KEY_MGMT_UNSPEC_802_1X[] = { 0x00, 0x50, 0xf2, 1 };
18 u8 WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X[] = { 0x00, 0x50, 0xf2, 2 };
19 u8 WPA_CIPHER_SUITE_NONE[] = { 0x00, 0x50, 0xf2, 0 };
20 u8 WPA_CIPHER_SUITE_WEP40[] = { 0x00, 0x50, 0xf2, 1 };
21 u8 WPA_CIPHER_SUITE_TKIP[] = { 0x00, 0x50, 0xf2, 2 };
22 u8 WPA_CIPHER_SUITE_WRAP[] = { 0x00, 0x50, 0xf2, 3 };
23 u8 WPA_CIPHER_SUITE_CCMP[] = { 0x00, 0x50, 0xf2, 4 };
24 u8 WPA_CIPHER_SUITE_WEP104[] = { 0x00, 0x50, 0xf2, 5 };
25
26 u16 RSN_VERSION_BSD = 1;
27 u8 RSN_AUTH_KEY_MGMT_UNSPEC_802_1X[] = { 0x00, 0x0f, 0xac, 1 };
28 u8 RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X[] = { 0x00, 0x0f, 0xac, 2 };
29 u8 RSN_CIPHER_SUITE_NONE[] = { 0x00, 0x0f, 0xac, 0 };
30 u8 RSN_CIPHER_SUITE_WEP40[] = { 0x00, 0x0f, 0xac, 1 };
31 u8 RSN_CIPHER_SUITE_TKIP[] = { 0x00, 0x0f, 0xac, 2 };
32 u8 RSN_CIPHER_SUITE_WRAP[] = { 0x00, 0x0f, 0xac, 3 };
33 u8 RSN_CIPHER_SUITE_CCMP[] = { 0x00, 0x0f, 0xac, 4 };
34 u8 RSN_CIPHER_SUITE_WEP104[] = { 0x00, 0x0f, 0xac, 5 };
35 /* */
36 /* for adhoc-master to generate ie and provide supported-rate to fw */
37 /* */
38
39 static 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
46 static 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
rtw_get_bit_value_from_ieee_value(u8 val)57 int 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}; /* last element must be zero!! */
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
rtw_is_cckrates_included(u8 * rate)70 bool 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
rtw_is_cckratesonly_included(u8 * rate)83 bool 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
rtw_check_network_type(unsigned char * rate,int ratelen,int channel)96 int rtw_check_network_type(unsigned char *rate, int ratelen, int channel)
97 {
98 if (channel > 14) {
99 if (rtw_is_cckrates_included(rate))
100 return WIRELESS_INVALID;
101 else
102 return WIRELESS_11A;
103 } else { /* could be pure B, pure G, or B/G */
104 if (rtw_is_cckratesonly_included(rate))
105 return WIRELESS_11B;
106 else if (rtw_is_cckrates_included(rate))
107 return WIRELESS_11BG;
108 else
109 return WIRELESS_11G;
110 }
111 }
112
rtw_set_fixed_ie(unsigned char * pbuf,unsigned int len,unsigned char * source,unsigned int * frlen)113 u8 *rtw_set_fixed_ie(unsigned char *pbuf, unsigned int len, unsigned char *source,
114 unsigned int *frlen)
115 {
116 memcpy((void *)pbuf, (void *)source, len);
117 *frlen = *frlen + len;
118 return pbuf + len;
119 }
120
121 /* rtw_set_ie will update frame length */
rtw_set_ie(u8 * pbuf,signed int index,uint len,u8 * source,uint * frlen)122 u8 *rtw_set_ie(u8 *pbuf,
123 signed int index,
124 uint len,
125 u8 *source,
126 uint *frlen) /* frame length */
127 {
128 *pbuf = (u8)index;
129
130 *(pbuf + 1) = (u8)len;
131
132 if (len > 0)
133 memcpy((void *)(pbuf + 2), (void *)source, len);
134
135 *frlen = *frlen + (len + 2);
136
137 return pbuf + len + 2;
138 }
139
140 /*----------------------------------------------------------------------------
141 index: the information element id index, limit is the limit for search
142 -----------------------------------------------------------------------------*/
rtw_get_ie(u8 * pbuf,signed int index,signed int * len,signed int limit)143 u8 *rtw_get_ie(u8 *pbuf, signed int index, signed int *len, signed int limit)
144 {
145 signed int tmp, i;
146 u8 *p;
147
148 if (limit < 1)
149 return NULL;
150
151 p = pbuf;
152 i = 0;
153 *len = 0;
154 while (1) {
155 if (*p == index) {
156 *len = *(p + 1);
157 return p;
158 } else {
159 tmp = *(p + 1);
160 p += (tmp + 2);
161 i += (tmp + 2);
162 }
163 if (i >= limit)
164 break;
165 }
166 return NULL;
167 }
168
169 /**
170 * rtw_get_ie_ex - Search specific IE from a series of IEs
171 * @in_ie: Address of IEs to search
172 * @in_len: Length limit from in_ie
173 * @eid: Element ID to match
174 * @oui: OUI to match
175 * @oui_len: OUI length
176 * @ie: If not NULL and the specific IE is found, the IE will be copied to the buf starting from the specific IE
177 * @ielen: If not NULL and the specific IE is found, will set to the length of the entire IE
178 *
179 * Returns: The address of the specific IE found, or NULL
180 */
rtw_get_ie_ex(u8 * in_ie,uint in_len,u8 eid,u8 * oui,u8 oui_len,u8 * ie,uint * ielen)181 u8 *rtw_get_ie_ex(u8 *in_ie, uint in_len, u8 eid, u8 *oui, u8 oui_len, u8 *ie, uint *ielen)
182 {
183 uint cnt;
184 u8 *target_ie = NULL;
185
186 if (ielen)
187 *ielen = 0;
188
189 if (!in_ie || in_len <= 0)
190 return target_ie;
191
192 cnt = 0;
193
194 while (cnt < in_len) {
195 if (eid == in_ie[cnt]
196 && (!oui || !memcmp(&in_ie[cnt+2], oui, oui_len))) {
197 target_ie = &in_ie[cnt];
198
199 if (ie)
200 memcpy(ie, &in_ie[cnt], in_ie[cnt+1]+2);
201
202 if (ielen)
203 *ielen = in_ie[cnt+1]+2;
204
205 break;
206 } else {
207 cnt += in_ie[cnt+1]+2; /* goto next */
208 }
209 }
210
211 return target_ie;
212 }
213
214 /**
215 * rtw_ies_remove_ie - Find matching IEs and remove
216 * @ies: Address of IEs to search
217 * @ies_len: Pointer of length of ies, will update to new length
218 * @offset: The offset to start search
219 * @eid: Element ID to match
220 * @oui: OUI to match
221 * @oui_len: OUI length
222 *
223 * Returns: _SUCCESS: ies is updated, _FAIL: not updated
224 */
rtw_ies_remove_ie(u8 * ies,uint * ies_len,uint offset,u8 eid,u8 * oui,u8 oui_len)225 int rtw_ies_remove_ie(u8 *ies, uint *ies_len, uint offset, u8 eid, u8 *oui, u8 oui_len)
226 {
227 int ret = _FAIL;
228 u8 *target_ie;
229 u32 target_ielen;
230 u8 *start;
231 uint search_len;
232
233 if (!ies || !ies_len || *ies_len <= offset)
234 goto exit;
235
236 start = ies + offset;
237 search_len = *ies_len - offset;
238
239 while (1) {
240 target_ie = rtw_get_ie_ex(start, search_len, eid, oui, oui_len, NULL, &target_ielen);
241 if (target_ie && target_ielen) {
242 u8 buf[MAX_IE_SZ] = {0};
243 u8 *remain_ies = target_ie + target_ielen;
244 uint remain_len = search_len - (remain_ies - start);
245
246 memcpy(buf, remain_ies, remain_len);
247 memcpy(target_ie, buf, remain_len);
248 *ies_len = *ies_len - target_ielen;
249 ret = _SUCCESS;
250
251 start = target_ie;
252 search_len = remain_len;
253 } else {
254 break;
255 }
256 }
257 exit:
258 return ret;
259 }
260
rtw_set_supported_rate(u8 * SupportedRates,uint mode)261 void rtw_set_supported_rate(u8 *SupportedRates, uint mode)
262 {
263 memset(SupportedRates, 0, NDIS_802_11_LENGTH_RATES_EX);
264
265 switch (mode) {
266 case WIRELESS_11B:
267 memcpy(SupportedRates, WIFI_CCKRATES, IEEE80211_CCK_RATE_LEN);
268 break;
269
270 case WIRELESS_11G:
271 case WIRELESS_11A:
272 case WIRELESS_11_5N:
273 case WIRELESS_11A_5N:/* Todo: no basic rate for ofdm ? */
274 case WIRELESS_11_5AC:
275 memcpy(SupportedRates, WIFI_OFDMRATES, IEEE80211_NUM_OFDM_RATESLEN);
276 break;
277
278 case WIRELESS_11BG:
279 case WIRELESS_11G_24N:
280 case WIRELESS_11_24N:
281 case WIRELESS_11BG_24N:
282 memcpy(SupportedRates, WIFI_CCKRATES, IEEE80211_CCK_RATE_LEN);
283 memcpy(SupportedRates + IEEE80211_CCK_RATE_LEN, WIFI_OFDMRATES, IEEE80211_NUM_OFDM_RATESLEN);
284 break;
285 }
286 }
287
rtw_get_rateset_len(u8 * rateset)288 uint rtw_get_rateset_len(u8 *rateset)
289 {
290 uint i;
291
292 for (i = 0; i < 13; i++)
293 if (rateset[i] == 0)
294 break;
295 return i;
296 }
297
rtw_generate_ie(struct registry_priv * pregistrypriv)298 int rtw_generate_ie(struct registry_priv *pregistrypriv)
299 {
300 u8 wireless_mode;
301 int sz = 0, rateLen;
302 struct wlan_bssid_ex *pdev_network = &pregistrypriv->dev_network;
303 u8 *ie = pdev_network->IEs;
304
305 /* timestamp will be inserted by hardware */
306 sz += 8;
307 ie += sz;
308
309 /* beacon interval : 2bytes */
310 *(__le16 *)ie = cpu_to_le16((u16)pdev_network->Configuration.BeaconPeriod);/* BCN_INTERVAL; */
311 sz += 2;
312 ie += 2;
313
314 /* capability info */
315 *(u16 *)ie = 0;
316
317 *(__le16 *)ie |= cpu_to_le16(WLAN_CAPABILITY_IBSS);
318
319 if (pregistrypriv->preamble == PREAMBLE_SHORT)
320 *(__le16 *)ie |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
321
322 if (pdev_network->Privacy)
323 *(__le16 *)ie |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
324
325 sz += 2;
326 ie += 2;
327
328 /* SSID */
329 ie = rtw_set_ie(ie, WLAN_EID_SSID, pdev_network->Ssid.SsidLength, pdev_network->Ssid.Ssid, &sz);
330
331 /* supported rates */
332 if (pregistrypriv->wireless_mode == WIRELESS_11ABGN) {
333 if (pdev_network->Configuration.DSConfig > 14)
334 wireless_mode = WIRELESS_11A_5N;
335 else
336 wireless_mode = WIRELESS_11BG_24N;
337 } else {
338 wireless_mode = pregistrypriv->wireless_mode;
339 }
340
341 rtw_set_supported_rate(pdev_network->SupportedRates, wireless_mode);
342
343 rateLen = rtw_get_rateset_len(pdev_network->SupportedRates);
344
345 if (rateLen > 8) {
346 ie = rtw_set_ie(ie, WLAN_EID_SUPP_RATES, 8, pdev_network->SupportedRates, &sz);
347 /* ie = rtw_set_ie(ie, WLAN_EID_EXT_SUPP_RATES, (rateLen - 8), (pdev_network->SupportedRates + 8), &sz); */
348 } else {
349 ie = rtw_set_ie(ie, WLAN_EID_SUPP_RATES, rateLen, pdev_network->SupportedRates, &sz);
350 }
351
352 /* DS parameter set */
353 ie = rtw_set_ie(ie, WLAN_EID_DS_PARAMS, 1, (u8 *)&(pdev_network->Configuration.DSConfig), &sz);
354
355 /* IBSS Parameter Set */
356
357 ie = rtw_set_ie(ie, WLAN_EID_IBSS_PARAMS, 2, (u8 *)&(pdev_network->Configuration.ATIMWindow), &sz);
358
359 if (rateLen > 8) {
360 ie = rtw_set_ie(ie, WLAN_EID_EXT_SUPP_RATES, (rateLen - 8), (pdev_network->SupportedRates + 8), &sz);
361 }
362
363 /* HT Cap. */
364 if (((pregistrypriv->wireless_mode&WIRELESS_11_5N) || (pregistrypriv->wireless_mode&WIRELESS_11_24N))
365 && (pregistrypriv->ht_enable == true)) {
366 /* todo: */
367 }
368
369 /* pdev_network->IELength = sz; update IELength */
370
371 /* return _SUCCESS; */
372
373 return sz;
374 }
375
rtw_get_wpa_ie(unsigned char * pie,int * wpa_ie_len,int limit)376 unsigned char *rtw_get_wpa_ie(unsigned char *pie, int *wpa_ie_len, int limit)
377 {
378 int len;
379 u16 val16;
380 unsigned char wpa_oui_type[] = {0x00, 0x50, 0xf2, 0x01};
381 u8 *pbuf = pie;
382 int limit_new = limit;
383 __le16 le_tmp;
384
385 while (1) {
386 pbuf = rtw_get_ie(pbuf, WLAN_EID_VENDOR_SPECIFIC, &len, limit_new);
387
388 if (pbuf) {
389 /* check if oui matches... */
390 if (memcmp((pbuf + 2), wpa_oui_type, sizeof(wpa_oui_type))) {
391 goto check_next_ie;
392 }
393
394 /* check version... */
395 memcpy((u8 *)&le_tmp, (pbuf + 6), sizeof(val16));
396
397 val16 = le16_to_cpu(le_tmp);
398 if (val16 != 0x0001)
399 goto check_next_ie;
400
401 *wpa_ie_len = *(pbuf + 1);
402
403 return pbuf;
404
405 } else {
406 *wpa_ie_len = 0;
407 return NULL;
408 }
409
410 check_next_ie:
411
412 limit_new = limit - (pbuf - pie) - 2 - len;
413
414 if (limit_new <= 0)
415 break;
416
417 pbuf += (2 + len);
418 }
419
420 *wpa_ie_len = 0;
421
422 return NULL;
423 }
424
rtw_get_wpa2_ie(unsigned char * pie,int * rsn_ie_len,int limit)425 unsigned char *rtw_get_wpa2_ie(unsigned char *pie, int *rsn_ie_len, int limit)
426 {
427 return rtw_get_ie(pie, WLAN_EID_RSN, rsn_ie_len, limit);
428 }
429
rtw_get_wpa_cipher_suite(u8 * s)430 int rtw_get_wpa_cipher_suite(u8 *s)
431 {
432 if (!memcmp(s, WPA_CIPHER_SUITE_NONE, WPA_SELECTOR_LEN))
433 return WPA_CIPHER_NONE;
434 if (!memcmp(s, WPA_CIPHER_SUITE_WEP40, WPA_SELECTOR_LEN))
435 return WPA_CIPHER_WEP40;
436 if (!memcmp(s, WPA_CIPHER_SUITE_TKIP, WPA_SELECTOR_LEN))
437 return WPA_CIPHER_TKIP;
438 if (!memcmp(s, WPA_CIPHER_SUITE_CCMP, WPA_SELECTOR_LEN))
439 return WPA_CIPHER_CCMP;
440 if (!memcmp(s, WPA_CIPHER_SUITE_WEP104, WPA_SELECTOR_LEN))
441 return WPA_CIPHER_WEP104;
442
443 return 0;
444 }
445
rtw_get_wpa2_cipher_suite(u8 * s)446 int rtw_get_wpa2_cipher_suite(u8 *s)
447 {
448 if (!memcmp(s, RSN_CIPHER_SUITE_NONE, RSN_SELECTOR_LEN))
449 return WPA_CIPHER_NONE;
450 if (!memcmp(s, RSN_CIPHER_SUITE_WEP40, RSN_SELECTOR_LEN))
451 return WPA_CIPHER_WEP40;
452 if (!memcmp(s, RSN_CIPHER_SUITE_TKIP, RSN_SELECTOR_LEN))
453 return WPA_CIPHER_TKIP;
454 if (!memcmp(s, RSN_CIPHER_SUITE_CCMP, RSN_SELECTOR_LEN))
455 return WPA_CIPHER_CCMP;
456 if (!memcmp(s, RSN_CIPHER_SUITE_WEP104, RSN_SELECTOR_LEN))
457 return WPA_CIPHER_WEP104;
458
459 return 0;
460 }
461
rtw_parse_wpa_ie(u8 * wpa_ie,int wpa_ie_len,int * group_cipher,int * pairwise_cipher,int * is_8021x)462 int rtw_parse_wpa_ie(u8 *wpa_ie, int wpa_ie_len, int *group_cipher, int *pairwise_cipher, int *is_8021x)
463 {
464 int i, ret = _SUCCESS;
465 int left, count;
466 u8 *pos;
467 u8 SUITE_1X[4] = {0x00, 0x50, 0xf2, 1};
468
469 if (wpa_ie_len <= 0) {
470 /* No WPA IE - fail silently */
471 return _FAIL;
472 }
473
474 if ((*wpa_ie != WLAN_EID_VENDOR_SPECIFIC) || (*(wpa_ie+1) != (u8)(wpa_ie_len - 2)) ||
475 (memcmp(wpa_ie+2, RTW_WPA_OUI_TYPE, WPA_SELECTOR_LEN))) {
476 return _FAIL;
477 }
478
479 pos = wpa_ie;
480
481 pos += 8;
482 left = wpa_ie_len - 8;
483
484 /* group_cipher */
485 if (left >= WPA_SELECTOR_LEN) {
486 *group_cipher = rtw_get_wpa_cipher_suite(pos);
487
488 pos += WPA_SELECTOR_LEN;
489 left -= WPA_SELECTOR_LEN;
490
491 } else if (left > 0)
492 return _FAIL;
493
494 /* pairwise_cipher */
495 if (left >= 2) {
496 /* count = le16_to_cpu(*(u16*)pos); */
497 count = get_unaligned_le16(pos);
498 pos += 2;
499 left -= 2;
500
501 if (count == 0 || left < count * WPA_SELECTOR_LEN)
502 return _FAIL;
503
504 for (i = 0; i < count; i++) {
505 *pairwise_cipher |= rtw_get_wpa_cipher_suite(pos);
506
507 pos += WPA_SELECTOR_LEN;
508 left -= WPA_SELECTOR_LEN;
509 }
510
511 } else if (left == 1)
512 return _FAIL;
513
514 if (is_8021x) {
515 if (left >= 6) {
516 pos += 2;
517 if (!memcmp(pos, SUITE_1X, 4)) {
518 *is_8021x = 1;
519 }
520 }
521 }
522
523 return ret;
524 }
525
rtw_parse_wpa2_ie(u8 * rsn_ie,int rsn_ie_len,int * group_cipher,int * pairwise_cipher,int * is_8021x)526 int rtw_parse_wpa2_ie(u8 *rsn_ie, int rsn_ie_len, int *group_cipher, int *pairwise_cipher, int *is_8021x)
527 {
528 int i, ret = _SUCCESS;
529 int left, count;
530 u8 *pos;
531 u8 SUITE_1X[4] = {0x00, 0x0f, 0xac, 0x01};
532
533 if (rsn_ie_len <= 0) {
534 /* No RSN IE - fail silently */
535 return _FAIL;
536 }
537
538 if ((*rsn_ie != WLAN_EID_RSN) || (*(rsn_ie+1) != (u8)(rsn_ie_len - 2))) {
539 return _FAIL;
540 }
541
542 pos = rsn_ie;
543 pos += 4;
544 left = rsn_ie_len - 4;
545
546 /* group_cipher */
547 if (left >= RSN_SELECTOR_LEN) {
548 *group_cipher = rtw_get_wpa2_cipher_suite(pos);
549
550 pos += RSN_SELECTOR_LEN;
551 left -= RSN_SELECTOR_LEN;
552
553 } else if (left > 0)
554 return _FAIL;
555
556 /* pairwise_cipher */
557 if (left >= 2) {
558 /* count = le16_to_cpu(*(u16*)pos); */
559 count = get_unaligned_le16(pos);
560 pos += 2;
561 left -= 2;
562
563 if (count == 0 || left < count * RSN_SELECTOR_LEN)
564 return _FAIL;
565
566 for (i = 0; i < count; i++) {
567 *pairwise_cipher |= rtw_get_wpa2_cipher_suite(pos);
568
569 pos += RSN_SELECTOR_LEN;
570 left -= RSN_SELECTOR_LEN;
571 }
572
573 } else if (left == 1)
574 return _FAIL;
575
576 if (is_8021x) {
577 if (left >= 6) {
578 pos += 2;
579 if (!memcmp(pos, SUITE_1X, 4))
580 *is_8021x = 1;
581 }
582 }
583
584 return ret;
585 }
586
587 /* ifdef CONFIG_WAPI_SUPPORT */
rtw_get_wapi_ie(u8 * in_ie,uint in_len,u8 * wapi_ie,u16 * wapi_len)588 int rtw_get_wapi_ie(u8 *in_ie, uint in_len, u8 *wapi_ie, u16 *wapi_len)
589 {
590 int len = 0;
591 u8 authmode;
592 uint cnt;
593 u8 wapi_oui1[4] = {0x0, 0x14, 0x72, 0x01};
594 u8 wapi_oui2[4] = {0x0, 0x14, 0x72, 0x02};
595
596 if (wapi_len)
597 *wapi_len = 0;
598
599 if (!in_ie || in_len <= 0)
600 return len;
601
602 cnt = (_TIMESTAMP_ + _BEACON_ITERVAL_ + _CAPABILITY_);
603
604 while (cnt < in_len) {
605 authmode = in_ie[cnt];
606
607 /* if (authmode == WLAN_EID_BSS_AC_ACCESS_DELAY) */
608 if (authmode == WLAN_EID_BSS_AC_ACCESS_DELAY && (!memcmp(&in_ie[cnt+6], wapi_oui1, 4) ||
609 !memcmp(&in_ie[cnt+6], wapi_oui2, 4))) {
610 if (wapi_ie)
611 memcpy(wapi_ie, &in_ie[cnt], in_ie[cnt+1]+2);
612
613 if (wapi_len)
614 *wapi_len = in_ie[cnt+1]+2;
615
616 cnt += in_ie[cnt+1]+2; /* get next */
617 } else {
618 cnt += in_ie[cnt+1]+2; /* get next */
619 }
620 }
621
622 if (wapi_len)
623 len = *wapi_len;
624
625 return len;
626 }
627 /* endif */
628
rtw_get_sec_ie(u8 * in_ie,uint in_len,u8 * rsn_ie,u16 * rsn_len,u8 * wpa_ie,u16 * wpa_len)629 void rtw_get_sec_ie(u8 *in_ie, uint in_len, u8 *rsn_ie, u16 *rsn_len, u8 *wpa_ie, u16 *wpa_len)
630 {
631 u8 authmode;
632 u8 wpa_oui[4] = {0x0, 0x50, 0xf2, 0x01};
633 uint cnt;
634
635 /* Search required WPA or WPA2 IE and copy to sec_ie[ ] */
636
637 cnt = (_TIMESTAMP_ + _BEACON_ITERVAL_ + _CAPABILITY_);
638
639 while (cnt < in_len) {
640 authmode = in_ie[cnt];
641
642 if ((authmode == WLAN_EID_VENDOR_SPECIFIC) && (!memcmp(&in_ie[cnt+2], &wpa_oui[0], 4))) {
643 if (wpa_ie)
644 memcpy(wpa_ie, &in_ie[cnt], in_ie[cnt+1]+2);
645
646 *wpa_len = in_ie[cnt + 1] + 2;
647 cnt += in_ie[cnt + 1] + 2; /* get next */
648 } else {
649 if (authmode == WLAN_EID_RSN) {
650 if (rsn_ie)
651 memcpy(rsn_ie, &in_ie[cnt], in_ie[cnt + 1] + 2);
652
653 *rsn_len = in_ie[cnt+1]+2;
654 cnt += in_ie[cnt+1]+2; /* get next */
655 } else {
656 cnt += in_ie[cnt+1]+2; /* get next */
657 }
658 }
659 }
660 }
661
rtw_is_wps_ie(u8 * ie_ptr,uint * wps_ielen)662 u8 rtw_is_wps_ie(u8 *ie_ptr, uint *wps_ielen)
663 {
664 u8 match = false;
665 u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
666
667 if (!ie_ptr)
668 return match;
669
670 eid = ie_ptr[0];
671
672 if ((eid == WLAN_EID_VENDOR_SPECIFIC) && (!memcmp(&ie_ptr[2], wps_oui, 4))) {
673 *wps_ielen = ie_ptr[1]+2;
674 match = true;
675 }
676 return match;
677 }
678
679 /**
680 * rtw_get_wps_ie - Search WPS IE from a series of IEs
681 * @in_ie: Address of IEs to search
682 * @in_len: Length limit from in_ie
683 * @wps_ie: If not NULL and WPS IE is found, WPS IE will be copied to the buf starting from wps_ie
684 * @wps_ielen: If not NULL and WPS IE is found, will set to the length of the entire WPS IE
685 *
686 * Returns: The address of the WPS IE found, or NULL
687 */
rtw_get_wps_ie(u8 * in_ie,uint in_len,u8 * wps_ie,uint * wps_ielen)688 u8 *rtw_get_wps_ie(u8 *in_ie, uint in_len, u8 *wps_ie, uint *wps_ielen)
689 {
690 uint cnt;
691 u8 *wpsie_ptr = NULL;
692 u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
693
694 if (wps_ielen)
695 *wps_ielen = 0;
696
697 if (!in_ie || in_len <= 0)
698 return wpsie_ptr;
699
700 cnt = 0;
701
702 while (cnt < in_len) {
703 eid = in_ie[cnt];
704
705 if ((eid == WLAN_EID_VENDOR_SPECIFIC) && (!memcmp(&in_ie[cnt+2], wps_oui, 4))) {
706 wpsie_ptr = &in_ie[cnt];
707
708 if (wps_ie)
709 memcpy(wps_ie, &in_ie[cnt], in_ie[cnt+1]+2);
710
711 if (wps_ielen)
712 *wps_ielen = in_ie[cnt+1]+2;
713
714 cnt += in_ie[cnt+1]+2;
715
716 break;
717 } else {
718 cnt += in_ie[cnt+1]+2; /* goto next */
719 }
720 }
721
722 return wpsie_ptr;
723 }
724
725 /**
726 * rtw_get_wps_attr - Search a specific WPS attribute from a given WPS IE
727 * @wps_ie: Address of WPS IE to search
728 * @wps_ielen: Length limit from wps_ie
729 * @target_attr_id: The attribute ID of WPS attribute to search
730 * @buf_attr: If not NULL and the WPS attribute is found, WPS attribute will be copied to the buf starting from buf_attr
731 * @len_attr: If not NULL and the WPS attribute is found, will set to the length of the entire WPS attribute
732 *
733 * Returns: the address of the specific WPS attribute found, or NULL
734 */
rtw_get_wps_attr(u8 * wps_ie,uint wps_ielen,u16 target_attr_id,u8 * buf_attr,u32 * len_attr)735 u8 *rtw_get_wps_attr(u8 *wps_ie, uint wps_ielen, u16 target_attr_id, u8 *buf_attr, u32 *len_attr)
736 {
737 u8 *attr_ptr = NULL;
738 u8 *target_attr_ptr = NULL;
739 u8 wps_oui[4] = {0x00, 0x50, 0xF2, 0x04};
740
741 if (len_attr)
742 *len_attr = 0;
743
744 if ((wps_ie[0] != WLAN_EID_VENDOR_SPECIFIC) ||
745 (memcmp(wps_ie + 2, wps_oui, 4))) {
746 return attr_ptr;
747 }
748
749 /* 6 = 1(Element ID) + 1(Length) + 4(WPS OUI) */
750 attr_ptr = wps_ie + 6; /* goto first attr */
751
752 while (attr_ptr - wps_ie < wps_ielen) {
753 /* 4 = 2(Attribute ID) + 2(Length) */
754 u16 attr_id = get_unaligned_be16(attr_ptr);
755 u16 attr_data_len = get_unaligned_be16(attr_ptr + 2);
756 u16 attr_len = attr_data_len + 4;
757
758 if (attr_id == target_attr_id) {
759 target_attr_ptr = attr_ptr;
760
761 if (buf_attr)
762 memcpy(buf_attr, attr_ptr, attr_len);
763
764 if (len_attr)
765 *len_attr = attr_len;
766
767 break;
768 } else {
769 attr_ptr += attr_len; /* goto next */
770 }
771 }
772
773 return target_attr_ptr;
774 }
775
776 /**
777 * rtw_get_wps_attr_content - Search a specific WPS attribute content from a given WPS IE
778 * @wps_ie: Address of WPS IE to search
779 * @wps_ielen: Length limit from wps_ie
780 * @target_attr_id: The attribute ID of WPS attribute to search
781 * @buf_content: If not NULL and the WPS attribute is found, WPS attribute content will be copied to the buf starting from buf_content
782 * @len_content: If not NULL and the WPS attribute is found, will set to the length of the WPS attribute content
783 *
784 * Returns: the address of the specific WPS attribute content found, or NULL
785 */
rtw_get_wps_attr_content(u8 * wps_ie,uint wps_ielen,u16 target_attr_id,u8 * buf_content,uint * len_content)786 u8 *rtw_get_wps_attr_content(u8 *wps_ie, uint wps_ielen, u16 target_attr_id, u8 *buf_content, uint *len_content)
787 {
788 u8 *attr_ptr;
789 u32 attr_len;
790
791 if (len_content)
792 *len_content = 0;
793
794 attr_ptr = rtw_get_wps_attr(wps_ie, wps_ielen, target_attr_id, NULL, &attr_len);
795
796 if (attr_ptr && attr_len) {
797 if (buf_content)
798 memcpy(buf_content, attr_ptr+4, attr_len-4);
799
800 if (len_content)
801 *len_content = attr_len-4;
802
803 return attr_ptr+4;
804 }
805
806 return NULL;
807 }
808
rtw_ieee802_11_parse_vendor_specific(u8 * pos,uint elen,struct rtw_ieee802_11_elems * elems,int show_errors)809 static int rtw_ieee802_11_parse_vendor_specific(u8 *pos, uint elen,
810 struct rtw_ieee802_11_elems *elems,
811 int show_errors)
812 {
813 unsigned int oui;
814
815 /* first 3 bytes in vendor specific information element are the IEEE
816 * OUI of the vendor. The following byte is used a vendor specific
817 * sub-type. */
818 if (elen < 4)
819 return -1;
820
821 oui = get_unaligned_be24(pos);
822 switch (oui) {
823 case OUI_MICROSOFT:
824 /* Microsoft/Wi-Fi information elements are further typed and
825 * subtyped */
826 switch (pos[3]) {
827 case 1:
828 /* Microsoft OUI (00:50:F2) with OUI Type 1:
829 * real WPA information element */
830 elems->wpa_ie = pos;
831 elems->wpa_ie_len = elen;
832 break;
833 case WME_OUI_TYPE: /* this is a Wi-Fi WME info. element */
834 if (elen < 5)
835 return -1;
836
837 switch (pos[4]) {
838 case WME_OUI_SUBTYPE_INFORMATION_ELEMENT:
839 case WME_OUI_SUBTYPE_PARAMETER_ELEMENT:
840 elems->wme = pos;
841 elems->wme_len = elen;
842 break;
843 case WME_OUI_SUBTYPE_TSPEC_ELEMENT:
844 elems->wme_tspec = pos;
845 elems->wme_tspec_len = elen;
846 break;
847 default:
848 return -1;
849 }
850 break;
851 case 4:
852 /* Wi-Fi Protected Setup (WPS) IE */
853 elems->wps_ie = pos;
854 elems->wps_ie_len = elen;
855 break;
856 default:
857 return -1;
858 }
859 break;
860
861 case OUI_BROADCOM:
862 switch (pos[3]) {
863 case VENDOR_HT_CAPAB_OUI_TYPE:
864 elems->vendor_ht_cap = pos;
865 elems->vendor_ht_cap_len = elen;
866 break;
867 default:
868 return -1;
869 }
870 break;
871
872 default:
873 return -1;
874 }
875
876 return 0;
877 }
878
879 /**
880 * ieee802_11_parse_elems - Parse information elements in management frames
881 * @start: Pointer to the start of IEs
882 * @len: Length of IE buffer in octets
883 * @elems: Data structure for parsed elements
884 * @show_errors: Whether to show parsing errors in debug log
885 * Returns: Parsing result
886 */
rtw_ieee802_11_parse_elems(u8 * start,uint len,struct rtw_ieee802_11_elems * elems,int show_errors)887 enum ParseRes rtw_ieee802_11_parse_elems(u8 *start, uint len,
888 struct rtw_ieee802_11_elems *elems,
889 int show_errors)
890 {
891 uint left = len;
892 u8 *pos = start;
893 int unknown = 0;
894
895 memset(elems, 0, sizeof(*elems));
896
897 while (left >= 2) {
898 u8 id, elen;
899
900 id = *pos++;
901 elen = *pos++;
902 left -= 2;
903
904 if (elen > left)
905 return ParseFailed;
906
907 switch (id) {
908 case WLAN_EID_SSID:
909 elems->ssid = pos;
910 elems->ssid_len = elen;
911 break;
912 case WLAN_EID_SUPP_RATES:
913 elems->supp_rates = pos;
914 elems->supp_rates_len = elen;
915 break;
916 case WLAN_EID_FH_PARAMS:
917 elems->fh_params = pos;
918 elems->fh_params_len = elen;
919 break;
920 case WLAN_EID_DS_PARAMS:
921 elems->ds_params = pos;
922 elems->ds_params_len = elen;
923 break;
924 case WLAN_EID_CF_PARAMS:
925 elems->cf_params = pos;
926 elems->cf_params_len = elen;
927 break;
928 case WLAN_EID_TIM:
929 elems->tim = pos;
930 elems->tim_len = elen;
931 break;
932 case WLAN_EID_IBSS_PARAMS:
933 elems->ibss_params = pos;
934 elems->ibss_params_len = elen;
935 break;
936 case WLAN_EID_CHALLENGE:
937 elems->challenge = pos;
938 elems->challenge_len = elen;
939 break;
940 case WLAN_EID_ERP_INFO:
941 elems->erp_info = pos;
942 elems->erp_info_len = elen;
943 break;
944 case WLAN_EID_EXT_SUPP_RATES:
945 elems->ext_supp_rates = pos;
946 elems->ext_supp_rates_len = elen;
947 break;
948 case WLAN_EID_VENDOR_SPECIFIC:
949 if (rtw_ieee802_11_parse_vendor_specific(pos, elen,
950 elems,
951 show_errors))
952 unknown++;
953 break;
954 case WLAN_EID_RSN:
955 elems->rsn_ie = pos;
956 elems->rsn_ie_len = elen;
957 break;
958 case WLAN_EID_PWR_CAPABILITY:
959 elems->power_cap = pos;
960 elems->power_cap_len = elen;
961 break;
962 case WLAN_EID_SUPPORTED_CHANNELS:
963 elems->supp_channels = pos;
964 elems->supp_channels_len = elen;
965 break;
966 case WLAN_EID_MOBILITY_DOMAIN:
967 elems->mdie = pos;
968 elems->mdie_len = elen;
969 break;
970 case WLAN_EID_FAST_BSS_TRANSITION:
971 elems->ftie = pos;
972 elems->ftie_len = elen;
973 break;
974 case WLAN_EID_TIMEOUT_INTERVAL:
975 elems->timeout_int = pos;
976 elems->timeout_int_len = elen;
977 break;
978 case WLAN_EID_HT_CAPABILITY:
979 elems->ht_capabilities = pos;
980 elems->ht_capabilities_len = elen;
981 break;
982 case WLAN_EID_HT_OPERATION:
983 elems->ht_operation = pos;
984 elems->ht_operation_len = elen;
985 break;
986 case WLAN_EID_VHT_CAPABILITY:
987 elems->vht_capabilities = pos;
988 elems->vht_capabilities_len = elen;
989 break;
990 case WLAN_EID_VHT_OPERATION:
991 elems->vht_operation = pos;
992 elems->vht_operation_len = elen;
993 break;
994 case WLAN_EID_OPMODE_NOTIF:
995 elems->vht_op_mode_notify = pos;
996 elems->vht_op_mode_notify_len = elen;
997 break;
998 default:
999 unknown++;
1000 break;
1001 }
1002
1003 left -= elen;
1004 pos += elen;
1005 }
1006
1007 if (left)
1008 return ParseFailed;
1009
1010 return unknown ? ParseUnknown : ParseOK;
1011 }
1012
rtw_macaddr_cfg(struct device * dev,u8 * mac_addr)1013 void rtw_macaddr_cfg(struct device *dev, u8 *mac_addr)
1014 {
1015 u8 mac[ETH_ALEN];
1016 struct device_node *np = dev->of_node;
1017 const unsigned char *addr;
1018 int len;
1019
1020 if (!mac_addr)
1021 return;
1022
1023 if (rtw_initmac && mac_pton(rtw_initmac, mac)) {
1024 /* Users specify the mac address */
1025 ether_addr_copy(mac_addr, mac);
1026 } else {
1027 /* Use the mac address stored in the Efuse */
1028 ether_addr_copy(mac, mac_addr);
1029 }
1030
1031 if (is_broadcast_ether_addr(mac) || is_zero_ether_addr(mac)) {
1032 addr = of_get_property(np, "local-mac-address", &len);
1033
1034 if (addr && len == ETH_ALEN) {
1035 ether_addr_copy(mac_addr, addr);
1036 } else {
1037 eth_random_addr(mac_addr);
1038 }
1039 }
1040 }
1041
rtw_get_cipher_info(struct wlan_network * pnetwork)1042 static int rtw_get_cipher_info(struct wlan_network *pnetwork)
1043 {
1044 u32 wpa_ielen;
1045 unsigned char *pbuf;
1046 int group_cipher = 0, pairwise_cipher = 0, is8021x = 0;
1047 int ret = _FAIL;
1048
1049 pbuf = rtw_get_wpa_ie(&pnetwork->network.IEs[12], &wpa_ielen, pnetwork->network.IELength-12);
1050
1051 if (pbuf && (wpa_ielen > 0)) {
1052 if (_SUCCESS == rtw_parse_wpa_ie(pbuf, wpa_ielen+2, &group_cipher, &pairwise_cipher, &is8021x)) {
1053 pnetwork->BcnInfo.pairwise_cipher = pairwise_cipher;
1054 pnetwork->BcnInfo.group_cipher = group_cipher;
1055 pnetwork->BcnInfo.is_8021x = is8021x;
1056 ret = _SUCCESS;
1057 }
1058 } else {
1059 pbuf = rtw_get_wpa2_ie(&pnetwork->network.IEs[12], &wpa_ielen, pnetwork->network.IELength-12);
1060
1061 if (pbuf && (wpa_ielen > 0)) {
1062 if (_SUCCESS == rtw_parse_wpa2_ie(pbuf, wpa_ielen+2, &group_cipher, &pairwise_cipher, &is8021x)) {
1063 pnetwork->BcnInfo.pairwise_cipher = pairwise_cipher;
1064 pnetwork->BcnInfo.group_cipher = group_cipher;
1065 pnetwork->BcnInfo.is_8021x = is8021x;
1066 ret = _SUCCESS;
1067 }
1068 }
1069 }
1070
1071 return ret;
1072 }
1073
rtw_get_bcn_info(struct wlan_network * pnetwork)1074 void rtw_get_bcn_info(struct wlan_network *pnetwork)
1075 {
1076 unsigned short cap = 0;
1077 u8 bencrypt = 0;
1078 /* u8 wpa_ie[255], rsn_ie[255]; */
1079 u16 wpa_len = 0, rsn_len = 0;
1080 struct HT_info_element *pht_info = NULL;
1081 struct ieee80211_ht_cap *pht_cap = NULL;
1082 unsigned int len;
1083 unsigned char *p;
1084 __le16 le_cap;
1085
1086 memcpy((u8 *)&le_cap, rtw_get_capability_from_ie(pnetwork->network.IEs), 2);
1087 cap = le16_to_cpu(le_cap);
1088 if (cap & WLAN_CAPABILITY_PRIVACY) {
1089 bencrypt = 1;
1090 pnetwork->network.Privacy = 1;
1091 } else {
1092 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_OPENSYS;
1093 }
1094 rtw_get_sec_ie(pnetwork->network.IEs, pnetwork->network.IELength, NULL, &rsn_len, NULL, &wpa_len);
1095
1096 if (rsn_len > 0) {
1097 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WPA2;
1098 } else if (wpa_len > 0) {
1099 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WPA;
1100 } else {
1101 if (bencrypt)
1102 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WEP;
1103 }
1104 rtw_get_cipher_info(pnetwork);
1105
1106 /* get bwmode and ch_offset */
1107 /* parsing HT_CAP_IE */
1108 p = rtw_get_ie(pnetwork->network.IEs + _FIXED_IE_LENGTH_, WLAN_EID_HT_CAPABILITY, &len, pnetwork->network.IELength - _FIXED_IE_LENGTH_);
1109 if (p && len > 0) {
1110 pht_cap = (struct ieee80211_ht_cap *)(p + 2);
1111 pnetwork->BcnInfo.ht_cap_info = le16_to_cpu(pht_cap->cap_info);
1112 } else {
1113 pnetwork->BcnInfo.ht_cap_info = 0;
1114 }
1115 /* parsing HT_INFO_IE */
1116 p = rtw_get_ie(pnetwork->network.IEs + _FIXED_IE_LENGTH_, WLAN_EID_HT_OPERATION, &len, pnetwork->network.IELength - _FIXED_IE_LENGTH_);
1117 if (p && len > 0) {
1118 pht_info = (struct HT_info_element *)(p + 2);
1119 pnetwork->BcnInfo.ht_info_infos_0 = pht_info->infos[0];
1120 } else {
1121 pnetwork->BcnInfo.ht_info_infos_0 = 0;
1122 }
1123 }
1124
1125 /* show MCS rate, unit: 100Kbps */
rtw_mcs_rate(u8 rf_type,u8 bw_40MHz,u8 short_GI,unsigned char * MCS_rate)1126 u16 rtw_mcs_rate(u8 rf_type, u8 bw_40MHz, u8 short_GI, unsigned char *MCS_rate)
1127 {
1128 u16 max_rate = 0;
1129
1130 if (rf_type == RF_1T1R) {
1131 if (MCS_rate[0] & BIT(7))
1132 max_rate = (bw_40MHz) ? ((short_GI)?1500:1350):((short_GI)?722:650);
1133 else if (MCS_rate[0] & BIT(6))
1134 max_rate = (bw_40MHz) ? ((short_GI)?1350:1215):((short_GI)?650:585);
1135 else if (MCS_rate[0] & BIT(5))
1136 max_rate = (bw_40MHz) ? ((short_GI)?1200:1080):((short_GI)?578:520);
1137 else if (MCS_rate[0] & BIT(4))
1138 max_rate = (bw_40MHz) ? ((short_GI)?900:810):((short_GI)?433:390);
1139 else if (MCS_rate[0] & BIT(3))
1140 max_rate = (bw_40MHz) ? ((short_GI)?600:540):((short_GI)?289:260);
1141 else if (MCS_rate[0] & BIT(2))
1142 max_rate = (bw_40MHz) ? ((short_GI)?450:405):((short_GI)?217:195);
1143 else if (MCS_rate[0] & BIT(1))
1144 max_rate = (bw_40MHz) ? ((short_GI)?300:270):((short_GI)?144:130);
1145 else if (MCS_rate[0] & BIT(0))
1146 max_rate = (bw_40MHz) ? ((short_GI)?150:135):((short_GI)?72:65);
1147 } else {
1148 if (MCS_rate[1]) {
1149 if (MCS_rate[1] & BIT(7))
1150 max_rate = (bw_40MHz) ? ((short_GI)?3000:2700):((short_GI)?1444:1300);
1151 else if (MCS_rate[1] & BIT(6))
1152 max_rate = (bw_40MHz) ? ((short_GI)?2700:2430):((short_GI)?1300:1170);
1153 else if (MCS_rate[1] & BIT(5))
1154 max_rate = (bw_40MHz) ? ((short_GI)?2400:2160):((short_GI)?1156:1040);
1155 else if (MCS_rate[1] & BIT(4))
1156 max_rate = (bw_40MHz) ? ((short_GI)?1800:1620):((short_GI)?867:780);
1157 else if (MCS_rate[1] & BIT(3))
1158 max_rate = (bw_40MHz) ? ((short_GI)?1200:1080):((short_GI)?578:520);
1159 else if (MCS_rate[1] & BIT(2))
1160 max_rate = (bw_40MHz) ? ((short_GI)?900:810):((short_GI)?433:390);
1161 else if (MCS_rate[1] & BIT(1))
1162 max_rate = (bw_40MHz) ? ((short_GI)?600:540):((short_GI)?289:260);
1163 else if (MCS_rate[1] & BIT(0))
1164 max_rate = (bw_40MHz) ? ((short_GI)?300:270):((short_GI)?144:130);
1165 } else {
1166 if (MCS_rate[0] & BIT(7))
1167 max_rate = (bw_40MHz) ? ((short_GI)?1500:1350):((short_GI)?722:650);
1168 else if (MCS_rate[0] & BIT(6))
1169 max_rate = (bw_40MHz) ? ((short_GI)?1350:1215):((short_GI)?650:585);
1170 else if (MCS_rate[0] & BIT(5))
1171 max_rate = (bw_40MHz) ? ((short_GI)?1200:1080):((short_GI)?578:520);
1172 else if (MCS_rate[0] & BIT(4))
1173 max_rate = (bw_40MHz) ? ((short_GI)?900:810):((short_GI)?433:390);
1174 else if (MCS_rate[0] & BIT(3))
1175 max_rate = (bw_40MHz) ? ((short_GI)?600:540):((short_GI)?289:260);
1176 else if (MCS_rate[0] & BIT(2))
1177 max_rate = (bw_40MHz) ? ((short_GI)?450:405):((short_GI)?217:195);
1178 else if (MCS_rate[0] & BIT(1))
1179 max_rate = (bw_40MHz) ? ((short_GI)?300:270):((short_GI)?144:130);
1180 else if (MCS_rate[0] & BIT(0))
1181 max_rate = (bw_40MHz) ? ((short_GI)?150:135):((short_GI)?72:65);
1182 }
1183 }
1184 return max_rate;
1185 }
1186
rtw_action_frame_parse(const u8 * frame,u32 frame_len,u8 * category,u8 * action)1187 int rtw_action_frame_parse(const u8 *frame, u32 frame_len, u8 *category, u8 *action)
1188 {
1189 const u8 *frame_body = frame + sizeof(struct ieee80211_hdr_3addr);
1190 u16 fc;
1191 u8 c;
1192 u8 a = ACT_PUBLIC_MAX;
1193
1194 fc = le16_to_cpu(((struct ieee80211_hdr_3addr *)frame)->frame_control);
1195
1196 if ((fc & (IEEE80211_FCTL_FTYPE|IEEE80211_FCTL_STYPE))
1197 != (IEEE80211_FTYPE_MGMT|IEEE80211_STYPE_ACTION)
1198 ) {
1199 return false;
1200 }
1201
1202 c = frame_body[0];
1203
1204 switch (c) {
1205 case RTW_WLAN_CATEGORY_P2P: /* vendor-specific */
1206 break;
1207 default:
1208 a = frame_body[1];
1209 }
1210
1211 if (category)
1212 *category = c;
1213 if (action)
1214 *action = a;
1215
1216 return true;
1217 }
1218
1219 static const char *_action_public_str[] = {
1220 "ACT_PUB_BSSCOEXIST",
1221 "ACT_PUB_DSE_ENABLE",
1222 "ACT_PUB_DSE_DEENABLE",
1223 "ACT_PUB_DSE_REG_LOCATION",
1224 "ACT_PUB_EXT_CHL_SWITCH",
1225 "ACT_PUB_DSE_MSR_REQ",
1226 "ACT_PUB_DSE_MSR_RPRT",
1227 "ACT_PUB_MP",
1228 "ACT_PUB_DSE_PWR_CONSTRAINT",
1229 "ACT_PUB_VENDOR",
1230 "ACT_PUB_GAS_INITIAL_REQ",
1231 "ACT_PUB_GAS_INITIAL_RSP",
1232 "ACT_PUB_GAS_COMEBACK_REQ",
1233 "ACT_PUB_GAS_COMEBACK_RSP",
1234 "ACT_PUB_TDLS_DISCOVERY_RSP",
1235 "ACT_PUB_LOCATION_TRACK",
1236 "ACT_PUB_RSVD",
1237 };
1238
action_public_str(u8 action)1239 const char *action_public_str(u8 action)
1240 {
1241 action = (action >= ACT_PUBLIC_MAX) ? ACT_PUBLIC_MAX : action;
1242 return _action_public_str[action];
1243 }
1244