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[deliverable/linux.git] / drivers / staging / rtl8723au / core / rtw_recv.c
1 /******************************************************************************
2 *
3 * Copyright(c) 2007 - 2012 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 ******************************************************************************/
15 #define _RTW_RECV_C_
16 #include <osdep_service.h>
17 #include <drv_types.h>
18 #include <recv_osdep.h>
19 #include <mlme_osdep.h>
20 #include <linux/ip.h>
21 #include <linux/if_ether.h>
22 #include <usb_ops.h>
23 #include <linux/ieee80211.h>
24 #include <wifi.h>
25 #include <rtl8723a_recv.h>
26 #include <rtl8723a_xmit.h>
27
28 void rtw_signal_stat_timer_hdl23a(unsigned long data);
29
30 void _rtw_init_sta_recv_priv23a(struct sta_recv_priv *psta_recvpriv)
31 {
32
33
34
35 spin_lock_init(&psta_recvpriv->lock);
36
37 /* for (i = 0; i<MAX_RX_NUMBLKS; i++) */
38 /* _rtw_init_queue23a(&psta_recvpriv->blk_strms[i]); */
39
40 _rtw_init_queue23a(&psta_recvpriv->defrag_q);
41
42
43 }
44
45 int _rtw_init_recv_priv23a(struct recv_priv *precvpriv,
46 struct rtw_adapter *padapter)
47 {
48 struct recv_frame *precvframe;
49 int i;
50 int res = _SUCCESS;
51
52 spin_lock_init(&precvpriv->lock);
53
54 _rtw_init_queue23a(&precvpriv->free_recv_queue);
55 _rtw_init_queue23a(&precvpriv->recv_pending_queue);
56 _rtw_init_queue23a(&precvpriv->uc_swdec_pending_queue);
57
58 precvpriv->adapter = padapter;
59
60 for (i = 0; i < NR_RECVFRAME ; i++) {
61 precvframe = kzalloc(sizeof(struct recv_frame), GFP_KERNEL);
62 if (!precvframe)
63 break;
64 INIT_LIST_HEAD(&precvframe->list);
65
66 list_add_tail(&precvframe->list,
67 &precvpriv->free_recv_queue.queue);
68
69 precvframe->adapter = padapter;
70 precvframe++;
71 }
72
73 precvpriv->free_recvframe_cnt = i;
74 precvpriv->rx_pending_cnt = 1;
75
76 res = rtl8723au_init_recv_priv(padapter);
77
78 setup_timer(&precvpriv->signal_stat_timer, rtw_signal_stat_timer_hdl23a,
79 (unsigned long)padapter);
80
81 precvpriv->signal_stat_sampling_interval = 1000; /* ms */
82
83 rtw_set_signal_stat_timer(precvpriv);
84
85 return res;
86 }
87
88 void _rtw_free_recv_priv23a (struct recv_priv *precvpriv)
89 {
90 struct rtw_adapter *padapter = precvpriv->adapter;
91 struct recv_frame *precvframe;
92 struct list_head *plist, *ptmp;
93
94 rtw_free_uc_swdec_pending_queue23a(padapter);
95
96 list_for_each_safe(plist, ptmp, &precvpriv->free_recv_queue.queue) {
97 precvframe = container_of(plist, struct recv_frame, list);
98 list_del_init(&precvframe->list);
99 kfree(precvframe);
100 }
101
102 rtl8723au_free_recv_priv(padapter);
103 }
104
105 struct recv_frame *rtw_alloc_recvframe23a(struct rtw_queue *pfree_recv_queue)
106 {
107 struct recv_frame *pframe;
108 struct list_head *plist, *phead;
109 struct rtw_adapter *padapter;
110 struct recv_priv *precvpriv;
111
112 spin_lock_bh(&pfree_recv_queue->lock);
113
114 if (list_empty(&pfree_recv_queue->queue))
115 pframe = NULL;
116 else {
117 phead = get_list_head(pfree_recv_queue);
118
119 plist = phead->next;
120
121 pframe = container_of(plist, struct recv_frame, list);
122
123 list_del_init(&pframe->list);
124 padapter = pframe->adapter;
125 if (padapter) {
126 precvpriv = &padapter->recvpriv;
127 if (pfree_recv_queue == &precvpriv->free_recv_queue)
128 precvpriv->free_recvframe_cnt--;
129 }
130 }
131
132 spin_unlock_bh(&pfree_recv_queue->lock);
133
134 return pframe;
135 }
136
137 int rtw_free_recvframe23a(struct recv_frame *precvframe)
138 {
139 struct rtw_adapter *padapter = precvframe->adapter;
140 struct recv_priv *precvpriv = &padapter->recvpriv;
141 struct rtw_queue *pfree_recv_queue;
142
143 if (precvframe->pkt) {
144 dev_kfree_skb_any(precvframe->pkt);/* free skb by driver */
145 precvframe->pkt = NULL;
146 }
147
148 pfree_recv_queue = &precvpriv->free_recv_queue;
149 spin_lock_bh(&pfree_recv_queue->lock);
150
151 list_del_init(&precvframe->list);
152
153 list_add_tail(&precvframe->list, get_list_head(pfree_recv_queue));
154
155 if (padapter) {
156 if (pfree_recv_queue == &precvpriv->free_recv_queue)
157 precvpriv->free_recvframe_cnt++;
158 }
159
160 spin_unlock_bh(&pfree_recv_queue->lock);
161
162
163
164 return _SUCCESS;
165 }
166
167 int rtw_enqueue_recvframe23a(struct recv_frame *precvframe, struct rtw_queue *queue)
168 {
169 struct rtw_adapter *padapter = precvframe->adapter;
170 struct recv_priv *precvpriv = &padapter->recvpriv;
171
172 spin_lock_bh(&queue->lock);
173
174 list_del_init(&precvframe->list);
175
176 list_add_tail(&precvframe->list, get_list_head(queue));
177
178 if (padapter) {
179 if (queue == &precvpriv->free_recv_queue)
180 precvpriv->free_recvframe_cnt++;
181 }
182
183 spin_unlock_bh(&queue->lock);
184
185 return _SUCCESS;
186 }
187
188 /*
189 caller : defrag ; recvframe_chk_defrag23a in recv_thread (passive)
190 pframequeue: defrag_queue : will be accessed in recv_thread (passive)
191
192 using spinlock to protect
193
194 */
195
196 static void rtw_free_recvframe23a_queue(struct rtw_queue *pframequeue)
197 {
198 struct recv_frame *hdr;
199 struct list_head *plist, *phead, *ptmp;
200
201 spin_lock(&pframequeue->lock);
202
203 phead = get_list_head(pframequeue);
204 plist = phead->next;
205
206 list_for_each_safe(plist, ptmp, phead) {
207 hdr = container_of(plist, struct recv_frame, list);
208 rtw_free_recvframe23a(hdr);
209 }
210
211 spin_unlock(&pframequeue->lock);
212 }
213
214 u32 rtw_free_uc_swdec_pending_queue23a(struct rtw_adapter *adapter)
215 {
216 u32 cnt = 0;
217 struct recv_frame *pending_frame;
218 while ((pending_frame = rtw_alloc_recvframe23a(&adapter->recvpriv.uc_swdec_pending_queue))) {
219 rtw_free_recvframe23a(pending_frame);
220 DBG_8723A("%s: dequeue uc_swdec_pending_queue\n", __func__);
221 cnt++;
222 }
223
224 return cnt;
225 }
226
227 int rtw_enqueue_recvbuf23a_to_head(struct recv_buf *precvbuf, struct rtw_queue *queue)
228 {
229 spin_lock_bh(&queue->lock);
230
231 list_del_init(&precvbuf->list);
232 list_add(&precvbuf->list, get_list_head(queue));
233
234 spin_unlock_bh(&queue->lock);
235
236 return _SUCCESS;
237 }
238
239 int rtw_enqueue_recvbuf23a(struct recv_buf *precvbuf, struct rtw_queue *queue)
240 {
241 unsigned long irqL;
242 spin_lock_irqsave(&queue->lock, irqL);
243
244 list_del_init(&precvbuf->list);
245
246 list_add_tail(&precvbuf->list, get_list_head(queue));
247 spin_unlock_irqrestore(&queue->lock, irqL);
248 return _SUCCESS;
249 }
250
251 struct recv_buf *rtw_dequeue_recvbuf23a (struct rtw_queue *queue)
252 {
253 unsigned long irqL;
254 struct recv_buf *precvbuf;
255 struct list_head *plist, *phead;
256
257 spin_lock_irqsave(&queue->lock, irqL);
258
259 if (list_empty(&queue->queue)) {
260 precvbuf = NULL;
261 } else {
262 phead = get_list_head(queue);
263
264 plist = phead->next;
265
266 precvbuf = container_of(plist, struct recv_buf, list);
267
268 list_del_init(&precvbuf->list);
269 }
270
271 spin_unlock_irqrestore(&queue->lock, irqL);
272
273 return precvbuf;
274 }
275
276 int recvframe_chkmic(struct rtw_adapter *adapter,
277 struct recv_frame *precvframe);
278 int recvframe_chkmic(struct rtw_adapter *adapter,
279 struct recv_frame *precvframe) {
280
281 int i, res = _SUCCESS;
282 u32 datalen;
283 u8 miccode[8];
284 u8 bmic_err = false, brpt_micerror = true;
285 u8 *pframe, *payload,*pframemic;
286 u8 *mickey;
287 /* u8 *iv, rxdata_key_idx = 0; */
288 struct sta_info *stainfo;
289 struct rx_pkt_attrib *prxattrib = &precvframe->attrib;
290 struct security_priv *psecuritypriv = &adapter->securitypriv;
291
292 struct mlme_ext_priv *pmlmeext = &adapter->mlmeextpriv;
293 struct mlme_ext_info *pmlmeinfo = &pmlmeext->mlmext_info;
294
295
296 stainfo = rtw_get_stainfo23a(&adapter->stapriv, &prxattrib->ta[0]);
297
298 if (prxattrib->encrypt == WLAN_CIPHER_SUITE_TKIP) {
299 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
300 ("\n recvframe_chkmic:prxattrib->encrypt == WLAN_CIPHER_SUITE_TKIP\n"));
301 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
302 ("\n recvframe_chkmic:da = 0x%02x:0x%02x:0x%02x:0x%02x:"
303 "0x%02x:0x%02x\n", prxattrib->ra[0],
304 prxattrib->ra[1], prxattrib->ra[2], prxattrib->ra[3],
305 prxattrib->ra[4], prxattrib->ra[5]));
306
307 /* calculate mic code */
308 if (stainfo != NULL) {
309 if (is_multicast_ether_addr(prxattrib->ra)) {
310 mickey = &psecuritypriv->dot118021XGrprxmickey[prxattrib->key_index].skey[0];
311
312 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
313 ("\n recvframe_chkmic: bcmc key\n"));
314
315 if (!psecuritypriv->binstallGrpkey) {
316 res = _FAIL;
317 RT_TRACE(_module_rtl871x_recv_c_,
318 _drv_err_,
319 ("\n recvframe_chkmic:didn't "
320 "install group key!!!!!!\n"));
321 DBG_8723A("\n recvframe_chkmic:didn't "
322 "install group key!!!!!!\n");
323 goto exit;
324 }
325 } else {
326 mickey = &stainfo->dot11tkiprxmickey.skey[0];
327 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
328 ("\n recvframe_chkmic: unicast "
329 "key\n"));
330 }
331
332 /* icv_len included the mic code */
333 datalen = precvframe->pkt->len-prxattrib->
334 hdrlen-prxattrib->iv_len-prxattrib->icv_len - 8;
335 pframe = precvframe->pkt->data;
336 payload = pframe + prxattrib->hdrlen +
337 prxattrib->iv_len;
338
339 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
340 ("\n prxattrib->iv_len =%d prxattrib->icv_len ="
341 "%d\n", prxattrib->iv_len,
342 prxattrib->icv_len));
343
344 /* care the length of the data */
345 rtw_seccalctkipmic23a(mickey, pframe, payload,
346 datalen, &miccode[0],
347 (unsigned char)prxattrib->priority);
348
349 pframemic = payload + datalen;
350
351 bmic_err = false;
352
353 for (i = 0; i < 8; i++) {
354 if (miccode[i] != *(pframemic + i)) {
355 RT_TRACE(_module_rtl871x_recv_c_,
356 _drv_err_,
357 ("recvframe_chkmic:miccode"
358 "[%d](%02x) != *(pframemic+"
359 "%d)(%02x) ", i, miccode[i],
360 i, *(pframemic + i)));
361 bmic_err = true;
362 }
363 }
364
365 if (bmic_err == true) {
366 int i;
367 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
368 ("\n *(pframemic-8)-*(pframemic-1) ="
369 "0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:"
370 "0x%02x:0x%02x:0x%02x\n",
371 *(pframemic - 8), *(pframemic - 7),
372 *(pframemic - 6), *(pframemic - 5),
373 *(pframemic - 4), *(pframemic - 3),
374 *(pframemic - 2), *(pframemic - 1)));
375 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
376 ("\n *(pframemic-16)-*(pframemic-9) ="
377 "0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:"
378 "0x%02x:0x%02x:0x%02x\n",
379 *(pframemic - 16), *(pframemic - 15),
380 *(pframemic - 14), *(pframemic - 13),
381 *(pframemic - 12), *(pframemic - 11),
382 *(pframemic - 10), *(pframemic - 9)));
383
384 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
385 ("\n ====== demp packet (len =%d) ======"
386 "\n", precvframe->pkt->len));
387 for (i = 0; i < precvframe->pkt->len; i = i + 8) {
388 RT_TRACE(_module_rtl871x_recv_c_,
389 _drv_err_, ("0x%02x:0x%02x:0x"
390 "%02x:0x%02x:0x%0"
391 "2x:0x%02x:0x%02x"
392 ":0x%02x",
393 *(precvframe->pkt->data+i),*(precvframe->pkt->data+i+1),
394 *(precvframe->pkt->data+i+2),*(precvframe->pkt->data+i+3),
395 *(precvframe->pkt->data+i+4),*(precvframe->pkt->data+i+5),
396 *(precvframe->pkt->data+i+6),*(precvframe->pkt->data+i+7)));
397 }
398 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
399 ("\n ====== demp packet end [len =%d]"
400 "======\n", precvframe->pkt->len));
401 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
402 ("\n hrdlen =%d,\n",
403 prxattrib->hdrlen));
404
405 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
406 ("ra = 0x%.2x 0x%.2x 0x%.2x 0x%.2x 0x%."
407 "2x 0x%.2x psecuritypriv->"
408 "binstallGrpkey =%d ",
409 prxattrib->ra[0], prxattrib->ra[1],
410 prxattrib->ra[2], prxattrib->ra[3],
411 prxattrib->ra[4], prxattrib->ra[5],
412 psecuritypriv->binstallGrpkey));
413
414 /* double check key_index for some timing
415 issue, cannot compare with
416 psecuritypriv->dot118021XGrpKeyid also
417 cause timing issue */
418 if ((is_multicast_ether_addr(prxattrib->ra)) &&
419 (prxattrib->key_index !=
420 pmlmeinfo->key_index))
421 brpt_micerror = false;
422
423 if ((prxattrib->bdecrypted == true) &&
424 (brpt_micerror == true)) {
425 rtw_handle_tkip_mic_err23a(adapter, (u8)is_multicast_ether_addr(prxattrib->ra));
426 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" mic error :prxattrib->bdecrypted =%d ", prxattrib->bdecrypted));
427 DBG_8723A(" mic error :prxattrib->"
428 "bdecrypted =%d\n",
429 prxattrib->bdecrypted);
430 } else {
431 RT_TRACE(_module_rtl871x_recv_c_,
432 _drv_err_,
433 (" mic error :prxattrib->"
434 "bdecrypted =%d ",
435 prxattrib->bdecrypted));
436 DBG_8723A(" mic error :prxattrib->"
437 "bdecrypted =%d\n",
438 prxattrib->bdecrypted);
439 }
440
441 res = _FAIL;
442 } else {
443 /* mic checked ok */
444 if (!psecuritypriv->bcheck_grpkey &&
445 is_multicast_ether_addr(prxattrib->ra)) {
446 psecuritypriv->bcheck_grpkey = 1;
447 RT_TRACE(_module_rtl871x_recv_c_,
448 _drv_err_,
449 ("psecuritypriv->bcheck_grp"
450 "key = true"));
451 }
452 }
453 } else {
454 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
455 ("recvframe_chkmic: rtw_get_stainfo23a =="
456 "NULL!!!\n"));
457 }
458
459 skb_trim(precvframe->pkt, precvframe->pkt->len - 8);
460 }
461
462 exit:
463
464
465
466 return res;
467 }
468
469 /* decrypt and set the ivlen, icvlen of the recv_frame */
470 struct recv_frame *decryptor(struct rtw_adapter *padapter,
471 struct recv_frame *precv_frame);
472 struct recv_frame *decryptor(struct rtw_adapter *padapter,
473 struct recv_frame *precv_frame)
474 {
475 struct rx_pkt_attrib *prxattrib = &precv_frame->attrib;
476 struct security_priv *psecuritypriv = &padapter->securitypriv;
477 struct recv_frame *return_packet = precv_frame;
478 int res = _SUCCESS;
479
480 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
481 ("prxstat->decrypted =%x prxattrib->encrypt = 0x%03x\n",
482 prxattrib->bdecrypted, prxattrib->encrypt));
483
484 if (prxattrib->encrypt > 0) {
485 u8 *iv = precv_frame->pkt->data + prxattrib->hdrlen;
486 prxattrib->key_index = (((iv[3]) >> 6) & 0x3);
487
488 if (prxattrib->key_index > WEP_KEYS) {
489 DBG_8723A("prxattrib->key_index(%d) > WEP_KEYS\n",
490 prxattrib->key_index);
491
492 switch (prxattrib->encrypt) {
493 case WLAN_CIPHER_SUITE_WEP40:
494 case WLAN_CIPHER_SUITE_WEP104:
495 prxattrib->key_index =
496 psecuritypriv->dot11PrivacyKeyIndex;
497 break;
498 case WLAN_CIPHER_SUITE_TKIP:
499 case WLAN_CIPHER_SUITE_CCMP:
500 default:
501 prxattrib->key_index =
502 psecuritypriv->dot118021XGrpKeyid;
503 break;
504 }
505 }
506 }
507
508 if ((prxattrib->encrypt > 0) && ((prxattrib->bdecrypted == 0))) {
509 psecuritypriv->hw_decrypted = 0;
510 switch (prxattrib->encrypt) {
511 case WLAN_CIPHER_SUITE_WEP40:
512 case WLAN_CIPHER_SUITE_WEP104:
513 rtw_wep_decrypt23a(padapter, precv_frame);
514 break;
515 case WLAN_CIPHER_SUITE_TKIP:
516 res = rtw_tkip_decrypt23a(padapter, precv_frame);
517 break;
518 case WLAN_CIPHER_SUITE_CCMP:
519 res = rtw_aes_decrypt23a(padapter, precv_frame);
520 break;
521 default:
522 break;
523 }
524 } else if (prxattrib->bdecrypted == 1 && prxattrib->encrypt > 0 &&
525 (psecuritypriv->busetkipkey == 1 ||
526 prxattrib->encrypt != WLAN_CIPHER_SUITE_TKIP)) {
527 psecuritypriv->hw_decrypted = 1;
528 }
529
530 if (res == _FAIL) {
531 rtw_free_recvframe23a(return_packet);
532 return_packet = NULL;
533 }
534
535
536
537 return return_packet;
538 }
539
540 /* set the security information in the recv_frame */
541 static struct recv_frame *portctrl(struct rtw_adapter *adapter,
542 struct recv_frame *precv_frame)
543 {
544 u8 *psta_addr, *ptr;
545 uint auth_alg;
546 struct recv_frame *pfhdr;
547 struct sta_info *psta;
548 struct sta_priv *pstapriv ;
549 struct recv_frame *prtnframe;
550 u16 ether_type;
551 u16 eapol_type = ETH_P_PAE;/* for Funia BD's WPA issue */
552 struct rx_pkt_attrib *pattrib;
553
554 pstapriv = &adapter->stapriv;
555
556 auth_alg = adapter->securitypriv.dot11AuthAlgrthm;
557
558 pfhdr = precv_frame;
559 pattrib = &pfhdr->attrib;
560 psta_addr = pattrib->ta;
561 psta = rtw_get_stainfo23a(pstapriv, psta_addr);
562
563 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
564 ("########portctrl:adapter->securitypriv.dot11AuthAlgrthm ="
565 "%d\n", adapter->securitypriv.dot11AuthAlgrthm));
566
567 if (auth_alg == dot11AuthAlgrthm_8021X) {
568 /* get ether_type */
569 ptr = pfhdr->pkt->data + pfhdr->attrib.hdrlen;
570
571 ether_type = (ptr[6] << 8) | ptr[7];
572
573 if ((psta != NULL) && (psta->ieee8021x_blocked)) {
574 /* blocked */
575 /* only accept EAPOL frame */
576 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
577 ("########portctrl:psta->ieee8021x_blocked =="
578 "1\n"));
579
580 if (ether_type == eapol_type) {
581 prtnframe = precv_frame;
582 } else {
583 /* free this frame */
584 rtw_free_recvframe23a(precv_frame);
585 prtnframe = NULL;
586 }
587 } else {
588 /* allowed */
589 /* check decryption status, and decrypt the frame if needed */
590 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
591 ("########portctrl:psta->ieee8021x_blocked =="
592 "0\n"));
593 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
594 ("portctrl:precv_frame->hdr.attrib.privacy ="
595 "%x\n", precv_frame->attrib.privacy));
596
597 if (pattrib->bdecrypted == 0) {
598 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
599 ("portctrl:prxstat->decrypted =%x\n",
600 pattrib->bdecrypted));
601 }
602
603 prtnframe = precv_frame;
604 /* check is the EAPOL frame or not (Rekey) */
605 if (ether_type == eapol_type) {
606 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
607 ("########portctrl:ether_type == "
608 "0x888e\n"));
609 /* check Rekey */
610
611 prtnframe = precv_frame;
612 } else {
613 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
614 ("########portctrl:ether_type = 0x%04x"
615 "\n", ether_type));
616 }
617 }
618 } else {
619 prtnframe = precv_frame;
620 }
621
622 return prtnframe;
623 }
624
625 int recv_decache(struct recv_frame *precv_frame, u8 bretry,
626 struct stainfo_rxcache *prxcache);
627 int recv_decache(struct recv_frame *precv_frame, u8 bretry,
628 struct stainfo_rxcache *prxcache)
629 {
630 int tid = precv_frame->attrib.priority;
631
632 u16 seq_ctrl = ((precv_frame->attrib.seq_num & 0xffff) << 4) |
633 (precv_frame->attrib.frag_num & 0xf);
634
635
636
637 if (tid > 15) {
638 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
639 ("recv_decache, (tid>15)! seq_ctrl = 0x%x, tid = 0x%x\n",
640 seq_ctrl, tid));
641
642 return _FAIL;
643 }
644
645 if (1) { /* if (bretry) */
646 if (seq_ctrl == prxcache->tid_rxseq[tid]) {
647 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
648 ("recv_decache, seq_ctrl = 0x%x, tid = 0x%x, "
649 "tid_rxseq = 0x%x\n",
650 seq_ctrl, tid, prxcache->tid_rxseq[tid]));
651
652 return _FAIL;
653 }
654 }
655
656 prxcache->tid_rxseq[tid] = seq_ctrl;
657
658
659
660 return _SUCCESS;
661 }
662
663 void process23a_pwrbit_data(struct rtw_adapter *padapter,
664 struct recv_frame *precv_frame);
665 void process23a_pwrbit_data(struct rtw_adapter *padapter,
666 struct recv_frame *precv_frame)
667 {
668 #ifdef CONFIG_8723AU_AP_MODE
669 unsigned char pwrbit;
670 struct sk_buff *skb = precv_frame->pkt;
671 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
672 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
673 struct sta_priv *pstapriv = &padapter->stapriv;
674 struct sta_info *psta = NULL;
675
676 psta = rtw_get_stainfo23a(pstapriv, pattrib->src);
677
678 if (psta) {
679 pwrbit = ieee80211_has_pm(hdr->frame_control);
680
681 if (pwrbit) {
682 if (!(psta->state & WIFI_SLEEP_STATE))
683 stop_sta_xmit23a(padapter, psta);
684 } else {
685 if (psta->state & WIFI_SLEEP_STATE)
686 wakeup_sta_to_xmit23a(padapter, psta);
687 }
688 }
689
690 #endif
691 }
692
693 void process_wmmps_data(struct rtw_adapter *padapter,
694 struct recv_frame *precv_frame);
695 void process_wmmps_data(struct rtw_adapter *padapter,
696 struct recv_frame *precv_frame)
697 {
698 #ifdef CONFIG_8723AU_AP_MODE
699 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
700 struct sta_priv *pstapriv = &padapter->stapriv;
701 struct sta_info *psta = NULL;
702
703 psta = rtw_get_stainfo23a(pstapriv, pattrib->src);
704
705 if (!psta)
706 return;
707
708
709 if (!psta->qos_option)
710 return;
711
712 if (!(psta->qos_info & 0xf))
713 return;
714
715 if (psta->state & WIFI_SLEEP_STATE) {
716 u8 wmmps_ac = 0;
717
718 switch (pattrib->priority) {
719 case 1:
720 case 2:
721 wmmps_ac = psta->uapsd_bk & BIT(1);
722 break;
723 case 4:
724 case 5:
725 wmmps_ac = psta->uapsd_vi & BIT(1);
726 break;
727 case 6:
728 case 7:
729 wmmps_ac = psta->uapsd_vo & BIT(1);
730 break;
731 case 0:
732 case 3:
733 default:
734 wmmps_ac = psta->uapsd_be & BIT(1);
735 break;
736 }
737
738 if (wmmps_ac) {
739 if (psta->sleepq_ac_len > 0) {
740 /* process received triggered frame */
741 xmit_delivery_enabled_frames23a(padapter, psta);
742 } else {
743 /* issue one qos null frame with More data bit = 0 and the EOSP bit set (= 1) */
744 issue_qos_nulldata23a(padapter, psta->hwaddr,
745 (u16)pattrib->priority,
746 0, 0);
747 }
748 }
749 }
750
751 #endif
752 }
753
754 static void count_rx_stats(struct rtw_adapter *padapter,
755 struct recv_frame *prframe, struct sta_info *sta)
756 {
757 int sz;
758 struct sta_info *psta = NULL;
759 struct stainfo_stats *pstats = NULL;
760 struct rx_pkt_attrib *pattrib = & prframe->attrib;
761 struct recv_priv *precvpriv = &padapter->recvpriv;
762
763 sz = prframe->pkt->len;
764 precvpriv->rx_bytes += sz;
765
766 padapter->mlmepriv.LinkDetectInfo.NumRxOkInPeriod++;
767
768 if ((!is_broadcast_ether_addr(pattrib->dst)) &&
769 (!is_multicast_ether_addr(pattrib->dst)))
770 padapter->mlmepriv.LinkDetectInfo.NumRxUnicastOkInPeriod++;
771
772 if (sta)
773 psta = sta;
774 else
775 psta = prframe->psta;
776
777 if (psta) {
778 pstats = &psta->sta_stats;
779
780 pstats->rx_data_pkts++;
781 pstats->rx_bytes += sz;
782 }
783 }
784
785 static int sta2sta_data_frame(struct rtw_adapter *adapter,
786 struct recv_frame *precv_frame,
787 struct sta_info**psta)
788 {
789 struct sk_buff *skb = precv_frame->pkt;
790 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
791 int ret = _SUCCESS;
792 struct rx_pkt_attrib *pattrib = & precv_frame->attrib;
793 struct sta_priv *pstapriv = &adapter->stapriv;
794 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
795 u8 *mybssid = get_bssid(pmlmepriv);
796 u8 *myhwaddr = myid(&adapter->eeprompriv);
797 u8 *sta_addr = NULL;
798 int bmcast = is_multicast_ether_addr(pattrib->dst);
799
800
801
802 if (check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) ||
803 check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE)) {
804
805 /* filter packets that SA is myself or multicast or broadcast */
806 if (ether_addr_equal(myhwaddr, pattrib->src)) {
807 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
808 (" SA == myself\n"));
809 ret = _FAIL;
810 goto exit;
811 }
812
813 if (!ether_addr_equal(myhwaddr, pattrib->dst) && !bmcast) {
814 ret = _FAIL;
815 goto exit;
816 }
817
818 if (ether_addr_equal(pattrib->bssid, "\x0\x0\x0\x0\x0\x0") ||
819 ether_addr_equal(mybssid, "\x0\x0\x0\x0\x0\x0") ||
820 !ether_addr_equal(pattrib->bssid, mybssid)) {
821 ret = _FAIL;
822 goto exit;
823 }
824
825 sta_addr = pattrib->src;
826 } else if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) {
827 /* For Station mode, sa and bssid should always be BSSID,
828 and DA is my mac-address */
829 if (!ether_addr_equal(pattrib->bssid, pattrib->src)) {
830 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
831 ("bssid != TA under STATION_MODE; drop "
832 "pkt\n"));
833 ret = _FAIL;
834 goto exit;
835 }
836
837 sta_addr = pattrib->bssid;
838
839 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
840 if (bmcast) {
841 /* For AP mode, if DA == MCAST, then BSSID should be also MCAST */
842 if (!is_multicast_ether_addr(pattrib->bssid)) {
843 ret = _FAIL;
844 goto exit;
845 }
846 } else { /* not mc-frame */
847 /* For AP mode, if DA is non-MCAST, then it must
848 be BSSID, and bssid == BSSID */
849 if (!ether_addr_equal(pattrib->bssid, pattrib->dst)) {
850 ret = _FAIL;
851 goto exit;
852 }
853
854 sta_addr = pattrib->src;
855 }
856 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE)) {
857 ether_addr_copy(pattrib->dst, hdr->addr1);
858 ether_addr_copy(pattrib->src, hdr->addr2);
859 ether_addr_copy(pattrib->bssid, hdr->addr3);
860 ether_addr_copy(pattrib->ra, pattrib->dst);
861 ether_addr_copy(pattrib->ta, pattrib->src);
862
863 sta_addr = mybssid;
864 } else {
865 ret = _FAIL;
866 }
867
868 if (bmcast)
869 *psta = rtw_get_bcmc_stainfo23a(adapter);
870 else
871 *psta = rtw_get_stainfo23a(pstapriv, sta_addr); /* get ap_info */
872
873 if (*psta == NULL) {
874 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("can't get psta under sta2sta_data_frame ; drop pkt\n"));
875 ret = _FAIL;
876 goto exit;
877 }
878
879 exit:
880
881 return ret;
882 }
883
884 int ap2sta_data_frame(struct rtw_adapter *adapter,
885 struct recv_frame *precv_frame,
886 struct sta_info **psta);
887 int ap2sta_data_frame(struct rtw_adapter *adapter,
888 struct recv_frame *precv_frame,
889 struct sta_info **psta)
890 {
891 struct sk_buff *skb = precv_frame->pkt;
892 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
893 struct rx_pkt_attrib *pattrib = & precv_frame->attrib;
894 int ret = _SUCCESS;
895 struct sta_priv *pstapriv = &adapter->stapriv;
896 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
897 u8 *mybssid = get_bssid(pmlmepriv);
898 u8 *myhwaddr = myid(&adapter->eeprompriv);
899 int bmcast = is_multicast_ether_addr(pattrib->dst);
900
901
902
903 if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) &&
904 (check_fwstate(pmlmepriv, _FW_LINKED) ||
905 check_fwstate(pmlmepriv, _FW_UNDER_LINKING))) {
906
907 /* filter packets that SA is myself or multicast or broadcast */
908 if (ether_addr_equal(myhwaddr, pattrib->src)) {
909 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
910 (" SA == myself\n"));
911 ret = _FAIL;
912 goto exit;
913 }
914
915 /* da should be for me */
916 if (!ether_addr_equal(myhwaddr, pattrib->dst) && !bmcast) {
917 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
918 (" ap2sta_data_frame: compare DA fail; DA ="
919 MAC_FMT"\n", MAC_ARG(pattrib->dst)));
920 ret = _FAIL;
921 goto exit;
922 }
923
924 /* check BSSID */
925 if (ether_addr_equal(pattrib->bssid, "\x0\x0\x0\x0\x0\x0") ||
926 ether_addr_equal(mybssid, "\x0\x0\x0\x0\x0\x0") ||
927 !ether_addr_equal(pattrib->bssid, mybssid)) {
928 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
929 (" ap2sta_data_frame: compare BSSID fail ; "
930 "BSSID ="MAC_FMT"\n", MAC_ARG(pattrib->bssid)));
931 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
932 ("mybssid ="MAC_FMT"\n", MAC_ARG(mybssid)));
933
934 if (!bmcast) {
935 DBG_8723A("issue_deauth23a to the nonassociated "
936 "ap =" MAC_FMT " for the reason(7)\n",
937 MAC_ARG(pattrib->bssid));
938 issue_deauth23a(adapter, pattrib->bssid,
939 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
940 }
941
942 ret = _FAIL;
943 goto exit;
944 }
945
946 if (bmcast)
947 *psta = rtw_get_bcmc_stainfo23a(adapter);
948 else
949 /* get ap_info */
950 *psta = rtw_get_stainfo23a(pstapriv, pattrib->bssid);
951
952 if (*psta == NULL) {
953 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
954 ("ap2sta: can't get psta under STATION_MODE ;"
955 " drop pkt\n"));
956 ret = _FAIL;
957 goto exit;
958 }
959
960 if (ieee80211_is_nullfunc(hdr->frame_control)) {
961 /* No data, will not indicate to upper layer,
962 temporily count it here */
963 count_rx_stats(adapter, precv_frame, *psta);
964 ret = RTW_RX_HANDLED;
965 goto exit;
966 }
967
968 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE) &&
969 check_fwstate(pmlmepriv, _FW_LINKED)) {
970 ether_addr_copy(pattrib->dst, hdr->addr1);
971 ether_addr_copy(pattrib->src, hdr->addr2);
972 ether_addr_copy(pattrib->bssid, hdr->addr3);
973 ether_addr_copy(pattrib->ra, pattrib->dst);
974 ether_addr_copy(pattrib->ta, pattrib->src);
975
976 /* */
977 ether_addr_copy(pattrib->bssid, mybssid);
978
979 /* get sta_info */
980 *psta = rtw_get_stainfo23a(pstapriv, pattrib->bssid);
981 if (*psta == NULL) {
982 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
983 ("can't get psta under MP_MODE ; drop pkt\n"));
984 ret = _FAIL;
985 goto exit;
986 }
987 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
988 /* Special case */
989 ret = RTW_RX_HANDLED;
990 goto exit;
991 } else {
992 if (ether_addr_equal(myhwaddr, pattrib->dst) && !bmcast) {
993 *psta = rtw_get_stainfo23a(pstapriv, pattrib->bssid);
994 if (*psta == NULL) {
995 DBG_8723A("issue_deauth23a to the ap =" MAC_FMT
996 " for the reason(7)\n",
997 MAC_ARG(pattrib->bssid));
998
999 issue_deauth23a(adapter, pattrib->bssid,
1000 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1001 }
1002 }
1003
1004 ret = _FAIL;
1005 }
1006
1007 exit:
1008
1009
1010
1011 return ret;
1012 }
1013
1014 int sta2ap_data_frame(struct rtw_adapter *adapter,
1015 struct recv_frame *precv_frame,
1016 struct sta_info **psta);
1017 int sta2ap_data_frame(struct rtw_adapter *adapter,
1018 struct recv_frame *precv_frame,
1019 struct sta_info **psta)
1020 {
1021 struct sk_buff *skb = precv_frame->pkt;
1022 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1023 struct rx_pkt_attrib *pattrib = & precv_frame->attrib;
1024 struct sta_priv *pstapriv = &adapter->stapriv;
1025 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
1026 unsigned char *mybssid = get_bssid(pmlmepriv);
1027 int ret = _SUCCESS;
1028
1029
1030
1031 if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
1032 /* For AP mode, RA = BSSID, TX = STA(SRC_ADDR), A3 = DST_ADDR */
1033 if (!ether_addr_equal(pattrib->bssid, mybssid)) {
1034 ret = _FAIL;
1035 goto exit;
1036 }
1037
1038 *psta = rtw_get_stainfo23a(pstapriv, pattrib->src);
1039 if (*psta == NULL) {
1040 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
1041 ("can't get psta under AP_MODE; drop pkt\n"));
1042 DBG_8723A("issue_deauth23a to sta =" MAC_FMT
1043 " for the reason(7)\n",
1044 MAC_ARG(pattrib->src));
1045
1046 issue_deauth23a(adapter, pattrib->src,
1047 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1048
1049 ret = RTW_RX_HANDLED;
1050 goto exit;
1051 }
1052
1053 process23a_pwrbit_data(adapter, precv_frame);
1054
1055 /* We only get here if it's a data frame, so no need to
1056 * confirm data frame type first */
1057 if (ieee80211_is_data_qos(hdr->frame_control))
1058 process_wmmps_data(adapter, precv_frame);
1059
1060 if (ieee80211_is_nullfunc(hdr->frame_control)) {
1061 /* No data, will not indicate to upper layer,
1062 temporily count it here */
1063 count_rx_stats(adapter, precv_frame, *psta);
1064 ret = RTW_RX_HANDLED;
1065 goto exit;
1066 }
1067 } else {
1068 u8 *myhwaddr = myid(&adapter->eeprompriv);
1069 if (!ether_addr_equal(pattrib->ra, myhwaddr)) {
1070 ret = RTW_RX_HANDLED;
1071 goto exit;
1072 }
1073 DBG_8723A("issue_deauth23a to sta =" MAC_FMT " for the reason(7)\n",
1074 MAC_ARG(pattrib->src));
1075 issue_deauth23a(adapter, pattrib->src,
1076 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1077 ret = RTW_RX_HANDLED;
1078 goto exit;
1079 }
1080
1081 exit:
1082
1083
1084
1085 return ret;
1086 }
1087
1088 static int validate_recv_ctrl_frame(struct rtw_adapter *padapter,
1089 struct recv_frame *precv_frame)
1090 {
1091 #ifdef CONFIG_8723AU_AP_MODE
1092 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
1093 struct sta_priv *pstapriv = &padapter->stapriv;
1094 struct sk_buff *skb = precv_frame->pkt;
1095 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1096
1097 if (!ieee80211_is_ctl(hdr->frame_control))
1098 return _FAIL;
1099
1100 /* receive the frames that ra(a1) is my address */
1101 if (!ether_addr_equal(hdr->addr1, myid(&padapter->eeprompriv)))
1102 return _FAIL;
1103
1104 /* only handle ps-poll */
1105 if (ieee80211_is_pspoll(hdr->frame_control)) {
1106 struct ieee80211_pspoll *psp = (struct ieee80211_pspoll *)hdr;
1107 u16 aid;
1108 u8 wmmps_ac = 0;
1109 struct sta_info *psta = NULL;
1110
1111 aid = le16_to_cpu(psp->aid) & 0x3fff;
1112 psta = rtw_get_stainfo23a(pstapriv, hdr->addr2);
1113
1114 if (!psta || psta->aid != aid)
1115 return _FAIL;
1116
1117 /* for rx pkt statistics */
1118 psta->sta_stats.rx_ctrl_pkts++;
1119
1120 switch (pattrib->priority) {
1121 case 1:
1122 case 2:
1123 wmmps_ac = psta->uapsd_bk & BIT(0);
1124 break;
1125 case 4:
1126 case 5:
1127 wmmps_ac = psta->uapsd_vi & BIT(0);
1128 break;
1129 case 6:
1130 case 7:
1131 wmmps_ac = psta->uapsd_vo & BIT(0);
1132 break;
1133 case 0:
1134 case 3:
1135 default:
1136 wmmps_ac = psta->uapsd_be & BIT(0);
1137 break;
1138 }
1139
1140 if (wmmps_ac)
1141 return _FAIL;
1142
1143 if (psta->state & WIFI_STA_ALIVE_CHK_STATE) {
1144 DBG_8723A("%s alive check-rx ps-poll\n", __func__);
1145 psta->expire_to = pstapriv->expire_to;
1146 psta->state ^= WIFI_STA_ALIVE_CHK_STATE;
1147 }
1148
1149 if ((psta->state & WIFI_SLEEP_STATE) &&
1150 (pstapriv->sta_dz_bitmap & CHKBIT(psta->aid))) {
1151 struct list_head *xmitframe_plist, *xmitframe_phead;
1152 struct xmit_frame *pxmitframe;
1153 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
1154
1155 spin_lock_bh(&pxmitpriv->lock);
1156
1157 xmitframe_phead = get_list_head(&psta->sleep_q);
1158 xmitframe_plist = xmitframe_phead->next;
1159
1160 if (!list_empty(xmitframe_phead)) {
1161 pxmitframe = container_of(xmitframe_plist,
1162 struct xmit_frame,
1163 list);
1164
1165 xmitframe_plist = xmitframe_plist->next;
1166
1167 list_del_init(&pxmitframe->list);
1168
1169 psta->sleepq_len--;
1170
1171 if (psta->sleepq_len>0)
1172 pxmitframe->attrib.mdata = 1;
1173 else
1174 pxmitframe->attrib.mdata = 0;
1175
1176 pxmitframe->attrib.triggered = 1;
1177
1178 /* DBG_8723A("handling ps-poll, q_len =%d, tim =%x\n", psta->sleepq_len, pstapriv->tim_bitmap); */
1179
1180 rtl8723au_hal_xmitframe_enqueue(padapter,
1181 pxmitframe);
1182
1183 if (psta->sleepq_len == 0) {
1184 pstapriv->tim_bitmap &= ~CHKBIT(psta->aid);
1185
1186 /* DBG_8723A("after handling ps-poll, tim =%x\n", pstapriv->tim_bitmap); */
1187
1188 /* upate BCN for TIM IE */
1189 /* update_BCNTIM(padapter); */
1190 update_beacon23a(padapter, WLAN_EID_TIM,
1191 NULL, false);
1192 }
1193
1194 /* spin_unlock_bh(&psta->sleep_q.lock); */
1195 spin_unlock_bh(&pxmitpriv->lock);
1196
1197 } else {
1198 /* spin_unlock_bh(&psta->sleep_q.lock); */
1199 spin_unlock_bh(&pxmitpriv->lock);
1200
1201 /* DBG_8723A("no buffered packets to xmit\n"); */
1202 if (pstapriv->tim_bitmap & CHKBIT(psta->aid)) {
1203 if (psta->sleepq_len == 0) {
1204 DBG_8723A("no buffered packets "
1205 "to xmit\n");
1206
1207 /* issue nulldata with More data bit = 0 to indicate we have no buffered packets */
1208 issue_nulldata23a(padapter,
1209 psta->hwaddr,
1210 0, 0, 0);
1211 } else {
1212 DBG_8723A("error!psta->sleepq"
1213 "_len =%d\n",
1214 psta->sleepq_len);
1215 psta->sleepq_len = 0;
1216 }
1217
1218 pstapriv->tim_bitmap &= ~CHKBIT(psta->aid);
1219
1220 /* upate BCN for TIM IE */
1221 /* update_BCNTIM(padapter); */
1222 update_beacon23a(padapter, WLAN_EID_TIM,
1223 NULL, false);
1224 }
1225 }
1226 }
1227 }
1228
1229 #endif
1230 return _FAIL;
1231 }
1232
1233 struct recv_frame* recvframe_chk_defrag23a(struct rtw_adapter *padapter,
1234 struct recv_frame *precv_frame);
1235 static int validate_recv_mgnt_frame(struct rtw_adapter *padapter,
1236 struct recv_frame *precv_frame)
1237 {
1238 struct sta_info *psta;
1239 struct sk_buff *skb;
1240 struct ieee80211_hdr *hdr;
1241 /* struct mlme_priv *pmlmepriv = &adapter->mlmepriv; */
1242
1243 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
1244 ("+validate_recv_mgnt_frame\n"));
1245
1246 precv_frame = recvframe_chk_defrag23a(padapter, precv_frame);
1247 if (precv_frame == NULL) {
1248 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
1249 ("%s: fragment packet\n", __func__));
1250 return _SUCCESS;
1251 }
1252
1253 skb = precv_frame->pkt;
1254 hdr = (struct ieee80211_hdr *) skb->data;
1255
1256 /* for rx pkt statistics */
1257 psta = rtw_get_stainfo23a(&padapter->stapriv, hdr->addr2);
1258 if (psta) {
1259 psta->sta_stats.rx_mgnt_pkts++;
1260
1261 if (ieee80211_is_beacon(hdr->frame_control))
1262 psta->sta_stats.rx_beacon_pkts++;
1263 else if (ieee80211_is_probe_req(hdr->frame_control))
1264 psta->sta_stats.rx_probereq_pkts++;
1265 else if (ieee80211_is_probe_resp(hdr->frame_control)) {
1266 if (ether_addr_equal(padapter->eeprompriv.mac_addr,
1267 hdr->addr1))
1268 psta->sta_stats.rx_probersp_pkts++;
1269 else if (is_broadcast_ether_addr(hdr->addr1) ||
1270 is_multicast_ether_addr(hdr->addr1))
1271 psta->sta_stats.rx_probersp_bm_pkts++;
1272 else
1273 psta->sta_stats.rx_probersp_uo_pkts++;
1274 }
1275 }
1276
1277 mgt_dispatcher23a(padapter, precv_frame);
1278
1279 return _SUCCESS;
1280 }
1281
1282 static int validate_recv_data_frame(struct rtw_adapter *adapter,
1283 struct recv_frame *precv_frame)
1284 {
1285 u8 bretry;
1286 u8 *psa, *pda;
1287 struct sta_info *psta = NULL;
1288 struct rx_pkt_attrib *pattrib = & precv_frame->attrib;
1289 struct security_priv *psecuritypriv = &adapter->securitypriv;
1290 int ret = _SUCCESS;
1291 struct sk_buff *skb = precv_frame->pkt;
1292 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1293
1294
1295
1296 bretry = ieee80211_has_retry(hdr->frame_control);
1297 pda = ieee80211_get_DA(hdr);
1298 psa = ieee80211_get_SA(hdr);
1299
1300 ether_addr_copy(pattrib->dst, pda);
1301 ether_addr_copy(pattrib->src, psa);
1302
1303 switch (hdr->frame_control &
1304 cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) {
1305 case cpu_to_le16(0):
1306 ether_addr_copy(pattrib->bssid, hdr->addr3);
1307 ether_addr_copy(pattrib->ra, pda);
1308 ether_addr_copy(pattrib->ta, psa);
1309 ret = sta2sta_data_frame(adapter, precv_frame, &psta);
1310 break;
1311
1312 case cpu_to_le16(IEEE80211_FCTL_FROMDS):
1313 ether_addr_copy(pattrib->bssid, hdr->addr2);
1314 ether_addr_copy(pattrib->ra, pda);
1315 ether_addr_copy(pattrib->ta, hdr->addr2);
1316 ret = ap2sta_data_frame(adapter, precv_frame, &psta);
1317 break;
1318
1319 case cpu_to_le16(IEEE80211_FCTL_TODS):
1320 ether_addr_copy(pattrib->bssid, hdr->addr1);
1321 ether_addr_copy(pattrib->ra, hdr->addr1);
1322 ether_addr_copy(pattrib->ta, psa);
1323 ret = sta2ap_data_frame(adapter, precv_frame, &psta);
1324 break;
1325
1326 case cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS):
1327 /*
1328 * There is no BSSID in this case, but the driver has been
1329 * using addr1 so far, so keep it for now.
1330 */
1331 ether_addr_copy(pattrib->bssid, hdr->addr1);
1332 ether_addr_copy(pattrib->ra, hdr->addr1);
1333 ether_addr_copy(pattrib->ta, hdr->addr2);
1334 ret = _FAIL;
1335 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" case 3\n"));
1336 break;
1337 }
1338
1339 if ((ret == _FAIL) || (ret == RTW_RX_HANDLED))
1340 goto exit;
1341
1342 if (!psta) {
1343 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
1344 (" after to_fr_ds_chk; psta == NULL\n"));
1345 ret = _FAIL;
1346 goto exit;
1347 }
1348
1349 /* psta->rssi = prxcmd->rssi; */
1350 /* psta->signal_quality = prxcmd->sq; */
1351 precv_frame->psta = psta;
1352
1353 pattrib->hdrlen = sizeof(struct ieee80211_hdr_3addr);
1354 if (ieee80211_has_a4(hdr->frame_control))
1355 pattrib->hdrlen += ETH_ALEN;
1356
1357 /* parsing QC field */
1358 if (pattrib->qos == 1) {
1359 __le16 *qptr = (__le16 *)ieee80211_get_qos_ctl(hdr);
1360 u16 qos_ctrl = le16_to_cpu(*qptr);
1361
1362 pattrib->priority = qos_ctrl & IEEE80211_QOS_CTL_TID_MASK;
1363 pattrib->ack_policy = (qos_ctrl >> 5) & 3;
1364 pattrib->amsdu =
1365 (qos_ctrl & IEEE80211_QOS_CTL_A_MSDU_PRESENT) >> 7;
1366 pattrib->hdrlen += IEEE80211_QOS_CTL_LEN;
1367
1368 if (pattrib->priority != 0 && pattrib->priority != 3) {
1369 adapter->recvpriv.bIsAnyNonBEPkts = true;
1370 }
1371 } else {
1372 pattrib->priority = 0;
1373 pattrib->ack_policy = 0;
1374 pattrib->amsdu = 0;
1375 }
1376
1377 if (pattrib->order) { /* HT-CTRL 11n */
1378 pattrib->hdrlen += 4;
1379 }
1380
1381 precv_frame->preorder_ctrl = &psta->recvreorder_ctrl[pattrib->priority];
1382
1383 /* decache, drop duplicate recv packets */
1384 if (recv_decache(precv_frame, bretry, &psta->sta_recvpriv.rxcache) ==
1385 _FAIL) {
1386 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
1387 ("decache : drop pkt\n"));
1388 ret = _FAIL;
1389 goto exit;
1390 }
1391
1392 if (pattrib->privacy) {
1393 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
1394 ("validate_recv_data_frame:pattrib->privacy =%x\n",
1395 pattrib->privacy));
1396 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
1397 ("\n ^^^^^^^^^^^is_multicast_ether_addr"
1398 "(pattrib->ra(0x%02x)) =%d^^^^^^^^^^^^^^^6\n",
1399 pattrib->ra[0],
1400 is_multicast_ether_addr(pattrib->ra)));
1401
1402 GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt,
1403 is_multicast_ether_addr(pattrib->ra));
1404
1405 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
1406 ("\n pattrib->encrypt =%d\n", pattrib->encrypt));
1407
1408 switch (pattrib->encrypt)
1409 {
1410 case WLAN_CIPHER_SUITE_WEP40:
1411 case WLAN_CIPHER_SUITE_WEP104:
1412 pattrib->iv_len = IEEE80211_WEP_IV_LEN;
1413 pattrib->icv_len = IEEE80211_WEP_ICV_LEN;
1414 break;
1415 case WLAN_CIPHER_SUITE_TKIP:
1416 pattrib->iv_len = IEEE80211_TKIP_IV_LEN;
1417 pattrib->icv_len = IEEE80211_TKIP_ICV_LEN;
1418 break;
1419 case WLAN_CIPHER_SUITE_CCMP:
1420 pattrib->iv_len = IEEE80211_CCMP_HDR_LEN;
1421 pattrib->icv_len = IEEE80211_CCMP_MIC_LEN;
1422 break;
1423 default:
1424 pattrib->iv_len = 0;
1425 pattrib->icv_len = 0;
1426 break;
1427 }
1428 } else {
1429 pattrib->encrypt = 0;
1430 pattrib->iv_len = 0;
1431 pattrib->icv_len = 0;
1432 }
1433
1434 exit:
1435
1436
1437
1438 return ret;
1439 }
1440
1441 static void dump_rx_pkt(struct sk_buff *skb, u16 type, int level)
1442 {
1443 int i;
1444 u8 *ptr;
1445
1446 if ((level == 1) ||
1447 ((level == 2) && (type == IEEE80211_FTYPE_MGMT)) ||
1448 ((level == 3) && (type == IEEE80211_FTYPE_DATA))) {
1449
1450 ptr = skb->data;
1451
1452 DBG_8723A("#############################\n");
1453
1454 for (i = 0; i < 64; i = i + 8)
1455 DBG_8723A("%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:\n",
1456 *(ptr + i), *(ptr + i + 1), *(ptr + i + 2),
1457 *(ptr + i + 3), *(ptr + i + 4),
1458 *(ptr + i + 5), *(ptr + i + 6),
1459 *(ptr + i + 7));
1460 DBG_8723A("#############################\n");
1461 }
1462 }
1463
1464 static int validate_recv_frame(struct rtw_adapter *adapter,
1465 struct recv_frame *precv_frame)
1466 {
1467 /* shall check frame subtype, to / from ds, da, bssid */
1468
1469 /* then call check if rx seq/frag. duplicated. */
1470 u8 type;
1471 u8 subtype;
1472 int retval = _SUCCESS;
1473 struct rx_pkt_attrib *pattrib = & precv_frame->attrib;
1474 struct sk_buff *skb = precv_frame->pkt;
1475 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1476 u8 ver;
1477 u8 bDumpRxPkt;
1478 u16 seq_ctrl, fctl;
1479
1480 fctl = le16_to_cpu(hdr->frame_control);
1481 ver = fctl & IEEE80211_FCTL_VERS;
1482 type = fctl & IEEE80211_FCTL_FTYPE;
1483 subtype = fctl & IEEE80211_FCTL_STYPE;
1484
1485 /* add version chk */
1486 if (ver != 0) {
1487 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
1488 ("validate_recv_data_frame fail! (ver!= 0)\n"));
1489 retval = _FAIL;
1490 goto exit;
1491 }
1492
1493 seq_ctrl = le16_to_cpu(hdr->seq_ctrl);
1494 pattrib->frag_num = seq_ctrl & IEEE80211_SCTL_FRAG;
1495 pattrib->seq_num = seq_ctrl >> 4;
1496
1497 pattrib->pw_save = ieee80211_has_pm(hdr->frame_control);
1498 pattrib->mfrag = ieee80211_has_morefrags(hdr->frame_control);
1499 pattrib->mdata = ieee80211_has_moredata(hdr->frame_control);
1500 pattrib->privacy = ieee80211_has_protected(hdr->frame_control);
1501 pattrib->order = ieee80211_has_order(hdr->frame_control);
1502
1503 GetHalDefVar8192CUsb(adapter, HAL_DEF_DBG_DUMP_RXPKT, &bDumpRxPkt);
1504
1505 if (unlikely(bDumpRxPkt == 1))
1506 dump_rx_pkt(skb, type, bDumpRxPkt);
1507
1508 switch (type)
1509 {
1510 case IEEE80211_FTYPE_MGMT:
1511 retval = validate_recv_mgnt_frame(adapter, precv_frame);
1512 if (retval == _FAIL) {
1513 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
1514 ("validate_recv_mgnt_frame fail\n"));
1515 }
1516 retval = _FAIL; /* only data frame return _SUCCESS */
1517 break;
1518 case IEEE80211_FTYPE_CTL:
1519 retval = validate_recv_ctrl_frame(adapter, precv_frame);
1520 if (retval == _FAIL) {
1521 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
1522 ("validate_recv_ctrl_frame fail\n"));
1523 }
1524 retval = _FAIL; /* only data frame return _SUCCESS */
1525 break;
1526 case IEEE80211_FTYPE_DATA:
1527 rtw_led_control(adapter, LED_CTL_RX);
1528 pattrib->qos = (subtype & IEEE80211_STYPE_QOS_DATA) ? 1 : 0;
1529 retval = validate_recv_data_frame(adapter, precv_frame);
1530 if (retval == _FAIL) {
1531 struct recv_priv *precvpriv = &adapter->recvpriv;
1532 /* RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_data_frame fail\n")); */
1533 precvpriv->rx_drop++;
1534 }
1535 break;
1536 default:
1537 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
1538 ("validate_recv_data_frame fail! type = 0x%x\n", type));
1539 retval = _FAIL;
1540 break;
1541 }
1542
1543 exit:
1544 return retval;
1545 }
1546
1547 /* remove the wlanhdr and add the eth_hdr */
1548
1549 static int wlanhdr_to_ethhdr (struct recv_frame *precvframe)
1550 {
1551 u16 eth_type, len, hdrlen;
1552 u8 bsnaphdr;
1553 u8 *psnap;
1554
1555 int ret = _SUCCESS;
1556 struct rtw_adapter *adapter = precvframe->adapter;
1557 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
1558
1559 struct sk_buff *skb = precvframe->pkt;
1560 u8 *ptr;
1561 struct rx_pkt_attrib *pattrib = &precvframe->attrib;
1562
1563
1564
1565 ptr = skb->data;
1566 hdrlen = pattrib->hdrlen;
1567 psnap = ptr + hdrlen;
1568 eth_type = (psnap[6] << 8) | psnap[7];
1569 /* convert hdr + possible LLC headers into Ethernet header */
1570 /* eth_type = (psnap_type[0] << 8) | psnap_type[1]; */
1571 if ((ether_addr_equal(psnap, rfc1042_header) &&
1572 eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) ||
1573 ether_addr_equal(psnap, bridge_tunnel_header)) {
1574 /* remove RFC1042 or Bridge-Tunnel encapsulation
1575 and replace EtherType */
1576 bsnaphdr = true;
1577 hdrlen += SNAP_SIZE;
1578 } else {
1579 /* Leave Ethernet header part of hdr and full payload */
1580 bsnaphdr = false;
1581 eth_type = (psnap[0] << 8) | psnap[1];
1582 }
1583
1584 len = skb->len - hdrlen;
1585
1586 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
1587 ("\n === pattrib->hdrlen: %x, pattrib->iv_len:%x ===\n\n",
1588 pattrib->hdrlen, pattrib->iv_len));
1589
1590 pattrib->eth_type = eth_type;
1591 if (check_fwstate(pmlmepriv, WIFI_MP_STATE)) {
1592 ptr += hdrlen;
1593 *ptr = 0x87;
1594 *(ptr + 1) = 0x12;
1595
1596 eth_type = 0x8712;
1597 /* append rx status for mp test packets */
1598
1599 ptr = skb_pull(skb, (hdrlen - sizeof(struct ethhdr) + 2) - 24);
1600 memcpy(ptr, skb->head, 24);
1601 ptr += 24;
1602 } else {
1603 ptr = skb_pull(skb, (hdrlen - sizeof(struct ethhdr) +
1604 (bsnaphdr ? 2:0)));
1605 }
1606
1607 ether_addr_copy(ptr, pattrib->dst);
1608 ether_addr_copy(ptr + ETH_ALEN, pattrib->src);
1609
1610 if (!bsnaphdr) {
1611 len = htons(len);
1612 memcpy(ptr + 12, &len, 2);
1613 }
1614
1615
1616 return ret;
1617 }
1618
1619 /* perform defrag */
1620 struct recv_frame *recvframe_defrag(struct rtw_adapter *adapter,
1621 struct rtw_queue *defrag_q);
1622 struct recv_frame *recvframe_defrag(struct rtw_adapter *adapter,
1623 struct rtw_queue *defrag_q)
1624 {
1625 struct list_head *plist, *phead, *ptmp;
1626 u8 *data, wlanhdr_offset;
1627 u8 curfragnum;
1628 struct recv_frame *pnfhdr;
1629 struct recv_frame *prframe, *pnextrframe;
1630 struct rtw_queue *pfree_recv_queue;
1631 struct sk_buff *skb;
1632
1633
1634
1635 curfragnum = 0;
1636 pfree_recv_queue = &adapter->recvpriv.free_recv_queue;
1637
1638 phead = get_list_head(defrag_q);
1639 plist = phead->next;
1640 prframe = container_of(plist, struct recv_frame, list);
1641 list_del_init(&prframe->list);
1642 skb = prframe->pkt;
1643
1644 if (curfragnum != prframe->attrib.frag_num) {
1645 /* the first fragment number must be 0 */
1646 /* free the whole queue */
1647 rtw_free_recvframe23a(prframe);
1648 rtw_free_recvframe23a_queue(defrag_q);
1649
1650 return NULL;
1651 }
1652
1653 curfragnum++;
1654
1655 phead = get_list_head(defrag_q);
1656
1657 data = prframe->pkt->data;
1658
1659 list_for_each_safe(plist, ptmp, phead) {
1660 pnfhdr = container_of(plist, struct recv_frame, list);
1661 pnextrframe = (struct recv_frame *)pnfhdr;
1662 /* check the fragment sequence (2nd ~n fragment frame) */
1663
1664 if (curfragnum != pnfhdr->attrib.frag_num) {
1665 /* the fragment number must be increasing
1666 (after decache) */
1667 /* release the defrag_q & prframe */
1668 rtw_free_recvframe23a(prframe);
1669 rtw_free_recvframe23a_queue(defrag_q);
1670 return NULL;
1671 }
1672
1673 curfragnum++;
1674
1675 /* copy the 2nd~n fragment frame's payload to the
1676 first fragment */
1677 /* get the 2nd~last fragment frame's payload */
1678
1679 wlanhdr_offset = pnfhdr->attrib.hdrlen + pnfhdr->attrib.iv_len;
1680
1681 skb_pull(pnfhdr->pkt, wlanhdr_offset);
1682
1683 /* append to first fragment frame's tail
1684 (if privacy frame, pull the ICV) */
1685
1686 skb_trim(skb, skb->len - prframe->attrib.icv_len);
1687
1688 memcpy(skb_tail_pointer(skb), pnfhdr->pkt->data,
1689 pnfhdr->pkt->len);
1690
1691 skb_put(skb, pnfhdr->pkt->len);
1692
1693 prframe->attrib.icv_len = pnfhdr->attrib.icv_len;
1694 };
1695
1696 /* free the defrag_q queue and return the prframe */
1697 rtw_free_recvframe23a_queue(defrag_q);
1698
1699 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
1700 ("Performance defrag!!!!!\n"));
1701
1702
1703
1704 return prframe;
1705 }
1706
1707 /* check if need to defrag, if needed queue the frame to defrag_q */
1708 struct recv_frame* recvframe_chk_defrag23a(struct rtw_adapter *padapter,
1709 struct recv_frame *precv_frame)
1710 {
1711 u8 ismfrag;
1712 u8 fragnum;
1713 u8 *psta_addr;
1714 struct recv_frame *pfhdr;
1715 struct sta_info *psta;
1716 struct sta_priv *pstapriv;
1717 struct list_head *phead;
1718 struct recv_frame *prtnframe = NULL;
1719 struct rtw_queue *pfree_recv_queue, *pdefrag_q;
1720
1721
1722
1723 pstapriv = &padapter->stapriv;
1724
1725 pfhdr = precv_frame;
1726
1727 pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
1728
1729 /* need to define struct of wlan header frame ctrl */
1730 ismfrag = pfhdr->attrib.mfrag;
1731 fragnum = pfhdr->attrib.frag_num;
1732
1733 psta_addr = pfhdr->attrib.ta;
1734 psta = rtw_get_stainfo23a(pstapriv, psta_addr);
1735 if (!psta) {
1736 struct ieee80211_hdr *hdr =
1737 (struct ieee80211_hdr *) pfhdr->pkt->data;
1738 if (!ieee80211_is_data(hdr->frame_control)) {
1739 psta = rtw_get_bcmc_stainfo23a(padapter);
1740 pdefrag_q = &psta->sta_recvpriv.defrag_q;
1741 } else
1742 pdefrag_q = NULL;
1743 } else
1744 pdefrag_q = &psta->sta_recvpriv.defrag_q;
1745
1746 if ((ismfrag == 0) && (fragnum == 0)) {
1747 prtnframe = precv_frame;/* isn't a fragment frame */
1748 }
1749
1750 if (ismfrag == 1) {
1751 /* 0~(n-1) fragment frame */
1752 /* enqueue to defraf_g */
1753 if (pdefrag_q != NULL) {
1754 if (fragnum == 0) {
1755 /* the first fragment */
1756 if (!list_empty(&pdefrag_q->queue)) {
1757 /* free current defrag_q */
1758 rtw_free_recvframe23a_queue(pdefrag_q);
1759 }
1760 }
1761
1762 /* Then enqueue the 0~(n-1) fragment into the
1763 defrag_q */
1764
1765 /* spin_lock(&pdefrag_q->lock); */
1766 phead = get_list_head(pdefrag_q);
1767 list_add_tail(&pfhdr->list, phead);
1768 /* spin_unlock(&pdefrag_q->lock); */
1769
1770 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
1771 ("Enqueuq: ismfrag = %d, fragnum = %d\n",
1772 ismfrag, fragnum));
1773
1774 prtnframe = NULL;
1775
1776 } else {
1777 /* can't find this ta's defrag_queue,
1778 so free this recv_frame */
1779 rtw_free_recvframe23a(precv_frame);
1780 prtnframe = NULL;
1781 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
1782 ("Free because pdefrag_q == NULL: ismfrag = "
1783 "%d, fragnum = %d\n", ismfrag, fragnum));
1784 }
1785 }
1786
1787 if ((ismfrag == 0) && (fragnum != 0)) {
1788 /* the last fragment frame */
1789 /* enqueue the last fragment */
1790 if (pdefrag_q != NULL) {
1791 /* spin_lock(&pdefrag_q->lock); */
1792 phead = get_list_head(pdefrag_q);
1793 list_add_tail(&pfhdr->list, phead);
1794 /* spin_unlock(&pdefrag_q->lock); */
1795
1796 /* call recvframe_defrag to defrag */
1797 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
1798 ("defrag: ismfrag = %d, fragnum = %d\n",
1799 ismfrag, fragnum));
1800 precv_frame = recvframe_defrag(padapter, pdefrag_q);
1801 prtnframe = precv_frame;
1802 } else {
1803 /* can't find this ta's defrag_queue,
1804 so free this recv_frame */
1805 rtw_free_recvframe23a(precv_frame);
1806 prtnframe = NULL;
1807 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
1808 ("Free because pdefrag_q == NULL: ismfrag = "
1809 "%d, fragnum = %d\n", ismfrag, fragnum));
1810 }
1811
1812 }
1813
1814 if ((prtnframe != NULL) && (prtnframe->attrib.privacy)) {
1815 /* after defrag we must check tkip mic code */
1816 if (recvframe_chkmic(padapter, prtnframe) == _FAIL) {
1817 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
1818 ("recvframe_chkmic(padapter, prtnframe) =="
1819 "_FAIL\n"));
1820 rtw_free_recvframe23a(prtnframe);
1821 prtnframe = NULL;
1822 }
1823 }
1824
1825
1826
1827 return prtnframe;
1828 }
1829
1830 int amsdu_to_msdu(struct rtw_adapter *padapter, struct recv_frame *prframe);
1831 int amsdu_to_msdu(struct rtw_adapter *padapter, struct recv_frame *prframe)
1832 {
1833 struct rx_pkt_attrib *pattrib;
1834 struct sk_buff *skb, *sub_skb;
1835 struct sk_buff_head skb_list;
1836
1837 pattrib = &prframe->attrib;
1838
1839 skb = prframe->pkt;
1840 skb_pull(skb, prframe->attrib.hdrlen);
1841 __skb_queue_head_init(&skb_list);
1842
1843 ieee80211_amsdu_to_8023s(skb, &skb_list, NULL, 0, 0, false);
1844
1845 while (!skb_queue_empty(&skb_list)) {
1846 sub_skb = __skb_dequeue(&skb_list);
1847
1848 sub_skb->protocol = eth_type_trans(sub_skb, padapter->pnetdev);
1849 sub_skb->dev = padapter->pnetdev;
1850
1851 sub_skb->ip_summed = CHECKSUM_NONE;
1852
1853 netif_rx(sub_skb);
1854 }
1855
1856 prframe->pkt = NULL;
1857 rtw_free_recvframe23a(prframe);
1858 return _SUCCESS;
1859 }
1860
1861 int check_indicate_seq(struct recv_reorder_ctrl *preorder_ctrl, u16 seq_num);
1862 int check_indicate_seq(struct recv_reorder_ctrl *preorder_ctrl, u16 seq_num)
1863 {
1864 u8 wsize = preorder_ctrl->wsize_b;
1865 u16 wend = (preorder_ctrl->indicate_seq + wsize -1) & 0xFFF;
1866
1867 /* Rx Reorder initialize condition. */
1868 if (preorder_ctrl->indicate_seq == 0xFFFF)
1869 preorder_ctrl->indicate_seq = seq_num;
1870
1871 /* Drop out the packet which SeqNum is smaller than WinStart */
1872 if (SN_LESS(seq_num, preorder_ctrl->indicate_seq))
1873 return false;
1874
1875 /* */
1876 /* Sliding window manipulation. Conditions includes: */
1877 /* 1. Incoming SeqNum is equal to WinStart =>Window shift 1 */
1878 /* 2. Incoming SeqNum is larger than the WinEnd => Window shift N */
1879 /* */
1880 if (SN_EQUAL(seq_num, preorder_ctrl->indicate_seq)) {
1881 preorder_ctrl->indicate_seq =
1882 (preorder_ctrl->indicate_seq + 1) & 0xFFF;
1883 } else if (SN_LESS(wend, seq_num)) {
1884 /* boundary situation, when seq_num cross 0xFFF */
1885 if (seq_num >= (wsize - 1))
1886 preorder_ctrl->indicate_seq = seq_num + 1 -wsize;
1887 else
1888 preorder_ctrl->indicate_seq = 0xFFF - (wsize - (seq_num + 1)) + 1;
1889 }
1890 return true;
1891 }
1892
1893 static int enqueue_reorder_recvframe23a(struct recv_reorder_ctrl *preorder_ctrl,
1894 struct recv_frame *prframe)
1895 {
1896 struct rx_pkt_attrib *pattrib = &prframe->attrib;
1897 struct rtw_queue *ppending_recvframe_queue;
1898 struct list_head *phead, *plist, *ptmp;
1899 struct recv_frame *hdr;
1900 struct rx_pkt_attrib *pnextattrib;
1901
1902 ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
1903 /* DbgPrint("+enqueue_reorder_recvframe23a()\n"); */
1904
1905 /* spin_lock_irqsave(&ppending_recvframe_queue->lock); */
1906 /* spin_lock_ex(&ppending_recvframe_queue->lock); */
1907
1908 phead = get_list_head(ppending_recvframe_queue);
1909
1910 list_for_each_safe(plist, ptmp, phead) {
1911 hdr = container_of(plist, struct recv_frame, list);
1912 pnextattrib = &hdr->attrib;
1913
1914 if (SN_LESS(pnextattrib->seq_num, pattrib->seq_num)) {
1915 continue;
1916 } else if (SN_EQUAL(pnextattrib->seq_num, pattrib->seq_num)) {
1917 /* Duplicate entry is found!! Do not insert current entry. */
1918 /* RT_TRACE(COMP_RX_REORDER, DBG_TRACE, ("InsertRxReorderList(): Duplicate packet is dropped!! IndicateSeq: %d, NewSeq: %d\n", pTS->RxIndicateSeq, SeqNum)); */
1919
1920 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock); */
1921 return false;
1922 } else {
1923 break;
1924 }
1925
1926 /* DbgPrint("enqueue_reorder_recvframe23a():while\n"); */
1927 }
1928
1929 /* spin_lock_irqsave(&ppending_recvframe_queue->lock); */
1930 /* spin_lock_ex(&ppending_recvframe_queue->lock); */
1931
1932 list_del_init(&prframe->list);
1933
1934 list_add_tail(&prframe->list, plist);
1935
1936 /* spin_unlock_ex(&ppending_recvframe_queue->lock); */
1937 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock); */
1938
1939 /* RT_TRACE(COMP_RX_REORDER, DBG_TRACE, ("InsertRxReorderList(): Pkt insert into buffer!! IndicateSeq: %d, NewSeq: %d\n", pTS->RxIndicateSeq, SeqNum)); */
1940 return true;
1941 }
1942
1943 int recv_indicatepkts_in_order(struct rtw_adapter *padapter,
1944 struct recv_reorder_ctrl *preorder_ctrl,
1945 int bforced);
1946 int recv_indicatepkts_in_order(struct rtw_adapter *padapter,
1947 struct recv_reorder_ctrl *preorder_ctrl,
1948 int bforced)
1949 {
1950 /* u8 bcancelled; */
1951 struct list_head *phead, *plist;
1952 struct recv_frame *prframe;
1953 struct rx_pkt_attrib *pattrib;
1954 /* u8 index = 0; */
1955 int bPktInBuf = false;
1956 struct recv_priv *precvpriv;
1957 struct rtw_queue *ppending_recvframe_queue;
1958
1959 precvpriv = &padapter->recvpriv;
1960 ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
1961 /* DbgPrint("+recv_indicatepkts_in_order\n"); */
1962
1963 /* spin_lock_irqsave(&ppending_recvframe_queue->lock); */
1964 /* spin_lock_ex(&ppending_recvframe_queue->lock); */
1965
1966 phead = get_list_head(ppending_recvframe_queue);
1967 plist = phead->next;
1968
1969 /* Handling some condition for forced indicate case. */
1970 if (bforced) {
1971 if (list_empty(phead)) {
1972 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock); */
1973 /* spin_unlock_ex(&ppending_recvframe_queue->lock); */
1974 return true;
1975 }
1976
1977 prframe = container_of(plist, struct recv_frame, list);
1978 pattrib = &prframe->attrib;
1979 preorder_ctrl->indicate_seq = pattrib->seq_num;
1980 }
1981
1982 /* Prepare indication list and indication. */
1983 /* Check if there is any packet need indicate. */
1984 while (!list_empty(phead)) {
1985
1986 prframe = container_of(plist, struct recv_frame, list);
1987 pattrib = &prframe->attrib;
1988
1989 if (!SN_LESS(preorder_ctrl->indicate_seq, pattrib->seq_num)) {
1990 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
1991 ("recv_indicatepkts_in_order: indicate =%d "
1992 "seq =%d amsdu =%d\n",
1993 preorder_ctrl->indicate_seq,
1994 pattrib->seq_num, pattrib->amsdu));
1995
1996 plist = plist->next;
1997 list_del_init(&prframe->list);
1998
1999 if (SN_EQUAL(preorder_ctrl->indicate_seq,
2000 pattrib->seq_num)) {
2001 preorder_ctrl->indicate_seq =
2002 (preorder_ctrl->indicate_seq + 1)&0xFFF;
2003 }
2004
2005 if (!pattrib->amsdu) {
2006 if ((padapter->bDriverStopped == false) &&
2007 (padapter->bSurpriseRemoved == false)) {
2008 rtw_recv_indicatepkt23a(padapter, prframe);
2009 }
2010 } else {
2011 if (amsdu_to_msdu(padapter, prframe) !=
2012 _SUCCESS)
2013 rtw_free_recvframe23a(prframe);
2014 }
2015
2016 /* Update local variables. */
2017 bPktInBuf = false;
2018
2019 } else {
2020 bPktInBuf = true;
2021 break;
2022 }
2023
2024 /* DbgPrint("recv_indicatepkts_in_order():while\n"); */
2025 }
2026
2027 /* spin_unlock_ex(&ppending_recvframe_queue->lock); */
2028 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock); */
2029
2030 return bPktInBuf;
2031 }
2032
2033 int recv_indicatepkt_reorder(struct rtw_adapter *padapter,
2034 struct recv_frame *prframe);
2035 int recv_indicatepkt_reorder(struct rtw_adapter *padapter,
2036 struct recv_frame *prframe)
2037 {
2038 int retval = _SUCCESS;
2039 struct rx_pkt_attrib *pattrib;
2040 struct recv_reorder_ctrl *preorder_ctrl;
2041 struct rtw_queue *ppending_recvframe_queue;
2042
2043 pattrib = &prframe->attrib;
2044 preorder_ctrl = prframe->preorder_ctrl;
2045 ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
2046
2047 if (!pattrib->amsdu) {
2048 /* s1. */
2049 wlanhdr_to_ethhdr(prframe);
2050
2051 if ((pattrib->qos!= 1) || (pattrib->eth_type == ETH_P_ARP) ||
2052 (pattrib->ack_policy != 0)) {
2053 if ((padapter->bDriverStopped == false) &&
2054 (padapter->bSurpriseRemoved == false)) {
2055 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
2056 ("@@@@ recv_indicatepkt_reorder -"
2057 "recv_func recv_indicatepkt\n"));
2058
2059 rtw_recv_indicatepkt23a(padapter, prframe);
2060 return _SUCCESS;
2061 }
2062
2063 return _FAIL;
2064 }
2065
2066 if (preorder_ctrl->enable == false) {
2067 /* indicate this recv_frame */
2068 preorder_ctrl->indicate_seq = pattrib->seq_num;
2069 rtw_recv_indicatepkt23a(padapter, prframe);
2070
2071 preorder_ctrl->indicate_seq =
2072 (preorder_ctrl->indicate_seq + 1) % 4096;
2073 return _SUCCESS;
2074 }
2075 } else {
2076 /* temp filter -> means didn't support A-MSDUs in a A-MPDU */
2077 if (preorder_ctrl->enable == false) {
2078 preorder_ctrl->indicate_seq = pattrib->seq_num;
2079 retval = amsdu_to_msdu(padapter, prframe);
2080
2081 preorder_ctrl->indicate_seq =
2082 (preorder_ctrl->indicate_seq + 1) % 4096;
2083 return retval;
2084 }
2085 }
2086
2087 spin_lock_bh(&ppending_recvframe_queue->lock);
2088
2089 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
2090 ("recv_indicatepkt_reorder: indicate =%d seq =%d\n",
2091 preorder_ctrl->indicate_seq, pattrib->seq_num));
2092
2093 /* s2. check if winstart_b(indicate_seq) needs to been updated */
2094 if (!check_indicate_seq(preorder_ctrl, pattrib->seq_num)) {
2095 goto _err_exit;
2096 }
2097
2098 /* s3. Insert all packet into Reorder Queue to maintain its ordering. */
2099 if (!enqueue_reorder_recvframe23a(preorder_ctrl, prframe)) {
2100 goto _err_exit;
2101 }
2102
2103 /* s4. */
2104 /* Indication process. */
2105 /* After Packet dropping and Sliding Window shifting as above,
2106 we can now just indicate the packets */
2107 /* with the SeqNum smaller than latest WinStart and buffer
2108 other packets. */
2109 /* */
2110 /* For Rx Reorder condition: */
2111 /* 1. All packets with SeqNum smaller than WinStart => Indicate */
2112 /* 2. All packets with SeqNum larger than or equal to WinStart =>
2113 Buffer it. */
2114 /* */
2115
2116 if (recv_indicatepkts_in_order(padapter, preorder_ctrl, false) == true) {
2117 mod_timer(&preorder_ctrl->reordering_ctrl_timer,
2118 jiffies + msecs_to_jiffies(REORDER_WAIT_TIME));
2119 spin_unlock_bh(&ppending_recvframe_queue->lock);
2120 } else {
2121 spin_unlock_bh(&ppending_recvframe_queue->lock);
2122 del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
2123 }
2124 return _SUCCESS;
2125
2126 _err_exit:
2127
2128 spin_unlock_bh(&ppending_recvframe_queue->lock);
2129 return _FAIL;
2130 }
2131
2132 void rtw_reordering_ctrl_timeout_handler23a(unsigned long pcontext)
2133 {
2134 struct recv_reorder_ctrl *preorder_ctrl;
2135 struct rtw_adapter *padapter;
2136 struct rtw_queue *ppending_recvframe_queue;
2137
2138 preorder_ctrl = (struct recv_reorder_ctrl *)pcontext;
2139 padapter = preorder_ctrl->padapter;
2140 ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
2141
2142 if (padapter->bDriverStopped || padapter->bSurpriseRemoved) {
2143 return;
2144 }
2145
2146 /* DBG_8723A("+rtw_reordering_ctrl_timeout_handler23a() =>\n"); */
2147
2148 spin_lock_bh(&ppending_recvframe_queue->lock);
2149
2150 if (recv_indicatepkts_in_order(padapter, preorder_ctrl, true) == true) {
2151 mod_timer(&preorder_ctrl->reordering_ctrl_timer,
2152 jiffies + msecs_to_jiffies(REORDER_WAIT_TIME));
2153 }
2154
2155 spin_unlock_bh(&ppending_recvframe_queue->lock);
2156 }
2157
2158 int process_recv_indicatepkts(struct rtw_adapter *padapter,
2159 struct recv_frame *prframe);
2160 int process_recv_indicatepkts(struct rtw_adapter *padapter,
2161 struct recv_frame *prframe)
2162 {
2163 int retval = _SUCCESS;
2164 /* struct recv_priv *precvpriv = &padapter->recvpriv; */
2165 /* struct rx_pkt_attrib *pattrib = &prframe->attrib; */
2166 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
2167 struct ht_priv *phtpriv = &pmlmepriv->htpriv;
2168
2169 if (phtpriv->ht_option == true) { /* B/G/N Mode */
2170 /* prframe->preorder_ctrl = &precvpriv->recvreorder_ctrl[pattrib->priority]; */
2171
2172 /* including perform A-MPDU Rx Ordering Buffer Control */
2173 if (recv_indicatepkt_reorder(padapter, prframe) != _SUCCESS) {
2174 if ((padapter->bDriverStopped == false) &&
2175 (padapter->bSurpriseRemoved == false)) {
2176 retval = _FAIL;
2177 return retval;
2178 }
2179 }
2180 } else /* B/G mode */
2181 {
2182 retval = wlanhdr_to_ethhdr(prframe);
2183 if (retval != _SUCCESS) {
2184 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
2185 ("wlanhdr_to_ethhdr: drop pkt\n"));
2186 return retval;
2187 }
2188
2189 if ((padapter->bDriverStopped == false) &&
2190 (padapter->bSurpriseRemoved == false)) {
2191 /* indicate this recv_frame */
2192 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
2193 ("@@@@ process_recv_indicatepkts- "
2194 "recv_func recv_indicatepkt\n"));
2195 rtw_recv_indicatepkt23a(padapter, prframe);
2196 } else {
2197 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
2198 ("@@@@ process_recv_indicatepkts- "
2199 "recv_func free_indicatepkt\n"));
2200
2201 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
2202 ("recv_func:bDriverStopped(%d) OR "
2203 "bSurpriseRemoved(%d)",
2204 padapter->bDriverStopped,
2205 padapter->bSurpriseRemoved));
2206 retval = _FAIL;
2207 return retval;
2208 }
2209
2210 }
2211
2212 return retval;
2213 }
2214
2215 static int recv_func_prehandle(struct rtw_adapter *padapter,
2216 struct recv_frame *rframe)
2217 {
2218 int ret = _SUCCESS;
2219
2220 /* check the frame crtl field and decache */
2221 ret = validate_recv_frame(padapter, rframe);
2222 if (ret != _SUCCESS) {
2223 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
2224 ("recv_func: validate_recv_frame fail! drop pkt\n"));
2225 rtw_free_recvframe23a(rframe);
2226 goto exit;
2227 }
2228
2229 exit:
2230 return ret;
2231 }
2232
2233 static int recv_func_posthandle(struct rtw_adapter *padapter,
2234 struct recv_frame *prframe)
2235 {
2236 int ret = _SUCCESS;
2237 struct recv_frame *orig_prframe = prframe;
2238 struct recv_priv *precvpriv = &padapter->recvpriv;
2239
2240 /* DATA FRAME */
2241 rtw_led_control(padapter, LED_CTL_RX);
2242
2243 prframe = decryptor(padapter, prframe);
2244 if (prframe == NULL) {
2245 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
2246 ("decryptor: drop pkt\n"));
2247 ret = _FAIL;
2248 goto _recv_data_drop;
2249 }
2250
2251 prframe = recvframe_chk_defrag23a(padapter, prframe);
2252 if (!prframe) {
2253 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
2254 ("recvframe_chk_defrag23a: drop pkt\n"));
2255 goto _recv_data_drop;
2256 }
2257
2258 /*
2259 * Pull off crypto headers
2260 */
2261 if (prframe->attrib.iv_len > 0) {
2262 skb_pull(prframe->pkt, prframe->attrib.iv_len);
2263 }
2264
2265 if (prframe->attrib.icv_len > 0) {
2266 skb_trim(prframe->pkt,
2267 prframe->pkt->len - prframe->attrib.icv_len);
2268 }
2269
2270 prframe = portctrl(padapter, prframe);
2271 if (!prframe) {
2272 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
2273 ("portctrl: drop pkt\n"));
2274 ret = _FAIL;
2275 goto _recv_data_drop;
2276 }
2277
2278 count_rx_stats(padapter, prframe, NULL);
2279
2280 ret = process_recv_indicatepkts(padapter, prframe);
2281 if (ret != _SUCCESS) {
2282 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
2283 ("recv_func: process_recv_indicatepkts fail!\n"));
2284 rtw_free_recvframe23a(orig_prframe);/* free this recv_frame */
2285 goto _recv_data_drop;
2286 }
2287 return ret;
2288
2289 _recv_data_drop:
2290 precvpriv->rx_drop++;
2291 return ret;
2292 }
2293
2294 int rtw_recv_entry23a(struct recv_frame *rframe)
2295 {
2296 int ret, r;
2297 struct rtw_adapter *padapter = rframe->adapter;
2298 struct rx_pkt_attrib *prxattrib = &rframe->attrib;
2299 struct recv_priv *recvpriv = &padapter->recvpriv;
2300 struct security_priv *psecuritypriv = &padapter->securitypriv;
2301 struct mlme_priv *mlmepriv = &padapter->mlmepriv;
2302
2303 /* check if need to handle uc_swdec_pending_queue*/
2304 if (check_fwstate(mlmepriv, WIFI_STATION_STATE) &&
2305 psecuritypriv->busetkipkey) {
2306 struct recv_frame *pending_frame;
2307
2308 while ((pending_frame = rtw_alloc_recvframe23a(&padapter->recvpriv.uc_swdec_pending_queue))) {
2309 r = recv_func_posthandle(padapter, pending_frame);
2310 if (r == _SUCCESS)
2311 DBG_8723A("%s: dequeue uc_swdec_pending_queue\n", __func__);
2312 }
2313 }
2314
2315 ret = recv_func_prehandle(padapter, rframe);
2316
2317 if (ret == _SUCCESS) {
2318 /* check if need to enqueue into uc_swdec_pending_queue*/
2319 if (check_fwstate(mlmepriv, WIFI_STATION_STATE) &&
2320 !is_multicast_ether_addr(prxattrib->ra) &&
2321 prxattrib->encrypt > 0 &&
2322 (prxattrib->bdecrypted == 0) &&
2323 !is_wep_enc(psecuritypriv->dot11PrivacyAlgrthm) &&
2324 !psecuritypriv->busetkipkey) {
2325 rtw_enqueue_recvframe23a(rframe, &padapter->recvpriv.uc_swdec_pending_queue);
2326 DBG_8723A("%s: no key, enqueue uc_swdec_pending_queue\n", __func__);
2327 goto exit;
2328 }
2329
2330 ret = recv_func_posthandle(padapter, rframe);
2331
2332 recvpriv->rx_pkts++;
2333 }
2334
2335 exit:
2336 return ret;
2337 }
2338
2339 void rtw_signal_stat_timer_hdl23a(unsigned long data)
2340 {
2341 struct rtw_adapter *adapter = (struct rtw_adapter *)data;
2342 struct recv_priv *recvpriv = &adapter->recvpriv;
2343
2344 u32 tmp_s, tmp_q;
2345 u8 avg_signal_strength = 0;
2346 u8 avg_signal_qual = 0;
2347 u32 num_signal_strength = 0;
2348 u32 num_signal_qual = 0;
2349 u8 _alpha = 3; /* this value is based on converging_constant = 5000 */
2350 /* and sampling_interval = 1000 */
2351
2352 if (adapter->recvpriv.is_signal_dbg) {
2353 /* update the user specific value, signal_strength_dbg, */
2354 /* to signal_strength, rssi */
2355 adapter->recvpriv.signal_strength =
2356 adapter->recvpriv.signal_strength_dbg;
2357 adapter->recvpriv.rssi =
2358 (s8)translate_percentage_to_dbm((u8)adapter->recvpriv.signal_strength_dbg);
2359 } else {
2360 if (recvpriv->signal_strength_data.update_req == 0) {
2361 /* update_req is clear, means we got rx */
2362 avg_signal_strength =
2363 recvpriv->signal_strength_data.avg_val;
2364 num_signal_strength =
2365 recvpriv->signal_strength_data.total_num;
2366 /* after avg_vals are accquired, we can re-stat */
2367 /* the signal values */
2368 recvpriv->signal_strength_data.update_req = 1;
2369 }
2370
2371 if (recvpriv->signal_qual_data.update_req == 0) {
2372 /* update_req is clear, means we got rx */
2373 avg_signal_qual = recvpriv->signal_qual_data.avg_val;
2374 num_signal_qual = recvpriv->signal_qual_data.total_num;
2375 /* after avg_vals are accquired, we can re-stat */
2376 /*the signal values */
2377 recvpriv->signal_qual_data.update_req = 1;
2378 }
2379
2380 /* update value of signal_strength, rssi, signal_qual */
2381 if (!check_fwstate(&adapter->mlmepriv, _FW_UNDER_SURVEY)) {
2382 tmp_s = (avg_signal_strength + (_alpha - 1) *
2383 recvpriv->signal_strength);
2384 if (tmp_s %_alpha)
2385 tmp_s = tmp_s / _alpha + 1;
2386 else
2387 tmp_s = tmp_s / _alpha;
2388 if (tmp_s > 100)
2389 tmp_s = 100;
2390
2391 tmp_q = (avg_signal_qual + (_alpha - 1) *
2392 recvpriv->signal_qual);
2393 if (tmp_q %_alpha)
2394 tmp_q = tmp_q / _alpha + 1;
2395 else
2396 tmp_q = tmp_q / _alpha;
2397 if (tmp_q > 100)
2398 tmp_q = 100;
2399
2400 recvpriv->signal_strength = tmp_s;
2401 recvpriv->rssi = (s8)translate_percentage_to_dbm(tmp_s);
2402 recvpriv->signal_qual = tmp_q;
2403
2404 DBG_8723A("%s signal_strength:%3u, rssi:%3d, "
2405 "signal_qual:%3u, num_signal_strength:%u, "
2406 "num_signal_qual:%u\n",
2407 __func__, recvpriv->signal_strength,
2408 recvpriv->rssi, recvpriv->signal_qual,
2409 num_signal_strength, num_signal_qual
2410 );
2411 }
2412 }
2413 rtw_set_signal_stat_timer(recvpriv);
2414 }
Linux kernel - Deliverables
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