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15#define _RTW_RECV_C_
16
17#include <linux/ieee80211.h>
18
19#include <osdep_service.h>
20#include <drv_types.h>
21#include <recv_osdep.h>
22#include <mlme_osdep.h>
23#include <mon.h>
24#include <wifi.h>
25#include <linux/vmalloc.h>
26#include <net/lib80211.h>
27
28#define ETHERNET_HEADER_SIZE 14
29#define LLC_HEADER_SIZE 6
30
31static u8 SNAP_ETH_TYPE_IPX[2] = {0x81, 0x37};
32static u8 SNAP_ETH_TYPE_APPLETALK_AARP[2] = {0x80, 0xf3};
33
34
35static u8 rtw_bridge_tunnel_header[] = {
36 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8
37};
38
39static u8 rtw_rfc1042_header[] = {
40 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00
41};
42
43static void rtw_signal_stat_timer_hdl(struct timer_list *t);
44
45void _rtw_init_sta_recv_priv(struct sta_recv_priv *psta_recvpriv)
46{
47
48 memset((u8 *)psta_recvpriv, 0, sizeof(struct sta_recv_priv));
49
50 spin_lock_init(&psta_recvpriv->lock);
51
52 _rtw_init_queue(&psta_recvpriv->defrag_q);
53
54}
55
56int _rtw_init_recv_priv(struct recv_priv *precvpriv, struct adapter *padapter)
57{
58 int i;
59
60 struct recv_frame *precvframe;
61
62 int res = _SUCCESS;
63
64 _rtw_init_queue(&precvpriv->free_recv_queue);
65 _rtw_init_queue(&precvpriv->recv_pending_queue);
66 _rtw_init_queue(&precvpriv->uc_swdec_pending_queue);
67
68 precvpriv->adapter = padapter;
69
70 precvpriv->pallocated_frame_buf = vzalloc(NR_RECVFRAME * sizeof(struct recv_frame) + RXFRAME_ALIGN_SZ);
71
72 if (!precvpriv->pallocated_frame_buf)
73 return _FAIL;
74
75 precvframe = PTR_ALIGN(precvpriv->pallocated_frame_buf, RXFRAME_ALIGN_SZ);
76
77 for (i = 0; i < NR_RECVFRAME; i++) {
78 INIT_LIST_HEAD(&(precvframe->list));
79
80 list_add_tail(&(precvframe->list),
81 &(precvpriv->free_recv_queue.queue));
82
83 precvframe->pkt = NULL;
84
85 precvframe->adapter = padapter;
86 precvframe++;
87 }
88 res = rtw_hal_init_recv_priv(padapter);
89
90 timer_setup(&precvpriv->signal_stat_timer, rtw_signal_stat_timer_hdl,
91 0);
92
93 precvpriv->signal_stat_sampling_interval = 1000;
94
95 rtw_set_signal_stat_timer(precvpriv);
96
97 return res;
98}
99
100void _rtw_free_recv_priv(struct recv_priv *precvpriv)
101{
102 struct adapter *padapter = precvpriv->adapter;
103
104 rtw_free_uc_swdec_pending_queue(padapter);
105
106 vfree(precvpriv->pallocated_frame_buf);
107
108 rtw_hal_free_recv_priv(padapter);
109
110}
111
112struct recv_frame *_rtw_alloc_recvframe(struct __queue *pfree_recv_queue)
113{
114 struct recv_frame *hdr;
115
116 hdr = list_first_entry_or_null(&pfree_recv_queue->queue,
117 struct recv_frame, list);
118 if (hdr)
119 list_del_init(&hdr->list);
120
121 return hdr;
122}
123
124struct recv_frame *rtw_alloc_recvframe(struct __queue *pfree_recv_queue)
125{
126 struct recv_frame *precvframe;
127
128 spin_lock_bh(&pfree_recv_queue->lock);
129
130 precvframe = _rtw_alloc_recvframe(pfree_recv_queue);
131
132 spin_unlock_bh(&pfree_recv_queue->lock);
133
134 return precvframe;
135}
136
137int rtw_free_recvframe(struct recv_frame *precvframe,
138 struct __queue *pfree_recv_queue)
139{
140 if (!precvframe)
141 return _FAIL;
142 if (precvframe->pkt) {
143 dev_kfree_skb_any(precvframe->pkt);
144 precvframe->pkt = NULL;
145 }
146
147 spin_lock_bh(&pfree_recv_queue->lock);
148
149 list_del_init(&(precvframe->list));
150
151 list_add_tail(&(precvframe->list), get_list_head(pfree_recv_queue));
152
153 spin_unlock_bh(&pfree_recv_queue->lock);
154
155 return _SUCCESS;
156}
157
158int _rtw_enqueue_recvframe(struct recv_frame *precvframe, struct __queue *queue)
159{
160 list_del_init(&(precvframe->list));
161 list_add_tail(&(precvframe->list), get_list_head(queue));
162
163 return _SUCCESS;
164}
165
166int rtw_enqueue_recvframe(struct recv_frame *precvframe, struct __queue *queue)
167{
168 int ret;
169
170 spin_lock_bh(&queue->lock);
171 ret = _rtw_enqueue_recvframe(precvframe, queue);
172 spin_unlock_bh(&queue->lock);
173
174 return ret;
175}
176
177
178
179
180
181
182
183
184
185void rtw_free_recvframe_queue(struct __queue *pframequeue, struct __queue *pfree_recv_queue)
186{
187 struct recv_frame *hdr;
188 struct list_head *plist, *phead;
189
190 spin_lock(&pframequeue->lock);
191
192 phead = get_list_head(pframequeue);
193 plist = phead->next;
194
195 while (phead != plist) {
196 hdr = list_entry(plist, struct recv_frame, list);
197
198 plist = plist->next;
199
200 rtw_free_recvframe(hdr, pfree_recv_queue);
201 }
202
203 spin_unlock(&pframequeue->lock);
204
205}
206
207u32 rtw_free_uc_swdec_pending_queue(struct adapter *adapter)
208{
209 u32 cnt = 0;
210 struct recv_frame *pending_frame;
211
212 while ((pending_frame = rtw_alloc_recvframe(&adapter->recvpriv.uc_swdec_pending_queue))) {
213 rtw_free_recvframe(pending_frame, &adapter->recvpriv.free_recv_queue);
214 DBG_88E("%s: dequeue uc_swdec_pending_queue\n", __func__);
215 cnt++;
216 }
217
218 return cnt;
219}
220
221static int recvframe_chkmic(struct adapter *adapter,
222 struct recv_frame *precvframe)
223{
224 int res = _SUCCESS;
225 struct rx_pkt_attrib *prxattrib = &precvframe->attrib;
226 struct sta_info *stainfo = rtw_get_stainfo(&adapter->stapriv, prxattrib->ta);
227
228 if (prxattrib->encrypt == _TKIP_) {
229 if (stainfo) {
230 int key_idx;
231 const int iv_len = 8, icv_len = 4, key_length = 32;
232 struct sk_buff *skb = precvframe->pkt;
233 u8 key[32], iv[8], icv[4], *pframe = skb->data;
234 void *crypto_private = NULL;
235 struct lib80211_crypto_ops *crypto_ops = try_then_request_module(lib80211_get_crypto_ops("TKIP"), "lib80211_crypt_tkip");
236 struct security_priv *psecuritypriv = &adapter->securitypriv;
237
238 if (IS_MCAST(prxattrib->ra)) {
239 if (!psecuritypriv) {
240 res = _FAIL;
241 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
242 ("\n %s: didn't install group key!!!!!!!!!!\n", __func__));
243 DBG_88E("\n %s: didn't install group key!!!!!!!!!!\n", __func__);
244 goto exit;
245 }
246 key_idx = prxattrib->key_index;
247 memcpy(key, psecuritypriv->dot118021XGrpKey[key_idx].skey, 16);
248 memcpy(key + 16, psecuritypriv->dot118021XGrprxmickey[key_idx].skey, 16);
249 } else {
250 key_idx = 0;
251 memcpy(key, stainfo->dot118021x_UncstKey.skey, 16);
252 memcpy(key + 16, stainfo->dot11tkiprxmickey.skey, 16);
253 }
254
255 if (!crypto_ops) {
256 res = _FAIL;
257 goto exit_lib80211_tkip;
258 }
259
260 memcpy(iv, pframe + prxattrib->hdrlen, iv_len);
261 memcpy(icv, pframe + skb->len - icv_len, icv_len);
262 memmove(pframe + iv_len, pframe, prxattrib->hdrlen);
263
264 skb_pull(skb, iv_len);
265 skb_trim(skb, skb->len - icv_len);
266
267 crypto_private = crypto_ops->init(key_idx);
268 if (!crypto_private) {
269 res = _FAIL;
270 goto exit_lib80211_tkip;
271 }
272 if (crypto_ops->set_key(key, key_length, NULL, crypto_private) < 0) {
273 res = _FAIL;
274 goto exit_lib80211_tkip;
275 }
276 if (crypto_ops->decrypt_msdu(skb, key_idx, prxattrib->hdrlen, crypto_private)) {
277 res = _FAIL;
278 goto exit_lib80211_tkip;
279 }
280
281 memmove(pframe, pframe + iv_len, prxattrib->hdrlen);
282 skb_push(skb, iv_len);
283 skb_put(skb, icv_len);
284
285 memcpy(pframe + prxattrib->hdrlen, iv, iv_len);
286 memcpy(pframe + skb->len - icv_len, icv, icv_len);
287
288exit_lib80211_tkip:
289 if (crypto_ops && crypto_private)
290 crypto_ops->deinit(crypto_private);
291 } else {
292 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
293 ("%s: rtw_get_stainfo==NULL!!!\n", __func__));
294 }
295 }
296
297exit:
298 return res;
299}
300
301
302static struct recv_frame *decryptor(struct adapter *padapter,
303 struct recv_frame *precv_frame)
304{
305 struct rx_pkt_attrib *prxattrib = &precv_frame->attrib;
306 struct security_priv *psecuritypriv = &padapter->securitypriv;
307 struct recv_frame *return_packet = precv_frame;
308 u32 res = _SUCCESS;
309
310 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("prxstat->decrypted=%x prxattrib->encrypt=0x%03x\n", prxattrib->bdecrypted, prxattrib->encrypt));
311
312 if (prxattrib->encrypt > 0) {
313 u8 *iv = precv_frame->pkt->data+prxattrib->hdrlen;
314
315 prxattrib->key_index = (((iv[3])>>6)&0x3);
316
317 if (prxattrib->key_index > WEP_KEYS) {
318 DBG_88E("prxattrib->key_index(%d)>WEP_KEYS\n", prxattrib->key_index);
319
320 switch (prxattrib->encrypt) {
321 case _WEP40_:
322 case _WEP104_:
323 prxattrib->key_index = psecuritypriv->dot11PrivacyKeyIndex;
324 break;
325 case _TKIP_:
326 case _AES_:
327 default:
328 prxattrib->key_index = psecuritypriv->dot118021XGrpKeyid;
329 break;
330 }
331 }
332 }
333
334 if ((prxattrib->encrypt > 0) && (prxattrib->bdecrypted == 0)) {
335 psecuritypriv->hw_decrypted = false;
336
337 switch (prxattrib->encrypt) {
338 case _WEP40_:
339 case _WEP104_:
340 res = rtw_wep_decrypt(padapter, (u8 *)precv_frame);
341 break;
342 case _TKIP_:
343 res = rtw_tkip_decrypt(padapter, (u8 *)precv_frame);
344 break;
345 case _AES_:
346 res = rtw_aes_decrypt(padapter, (u8 *)precv_frame);
347 break;
348 default:
349 break;
350 }
351 } else if (prxattrib->bdecrypted == 1 && prxattrib->encrypt > 0 &&
352 (psecuritypriv->busetkipkey == 1 || prxattrib->encrypt != _TKIP_))
353 psecuritypriv->hw_decrypted = true;
354
355 if (res == _FAIL) {
356 rtw_free_recvframe(return_packet, &padapter->recvpriv.free_recv_queue);
357 return_packet = NULL;
358 }
359
360 return return_packet;
361}
362
363
364static struct recv_frame *portctrl(struct adapter *adapter,
365 struct recv_frame *precv_frame)
366{
367 u8 *psta_addr, *ptr;
368 uint auth_alg;
369 struct recv_frame *pfhdr;
370 struct sta_info *psta;
371 struct sta_priv *pstapriv;
372 struct recv_frame *prtnframe;
373 u16 ether_type;
374 u16 eapol_type = 0x888e;
375 struct rx_pkt_attrib *pattrib;
376 __be16 be_tmp;
377
378 pstapriv = &adapter->stapriv;
379
380 auth_alg = adapter->securitypriv.dot11AuthAlgrthm;
381
382 ptr = precv_frame->pkt->data;
383 pfhdr = precv_frame;
384 pattrib = &pfhdr->attrib;
385 psta_addr = pattrib->ta;
386 psta = rtw_get_stainfo(pstapriv, psta_addr);
387
388 prtnframe = NULL;
389
390 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########%s:adapter->securitypriv.dot11AuthAlgrthm=%d\n", __func__, adapter->securitypriv.dot11AuthAlgrthm));
391
392 if (auth_alg == 2) {
393
394 ptr = ptr + pfhdr->attrib.hdrlen + LLC_HEADER_SIZE + pfhdr->attrib.iv_len;
395 memcpy(&be_tmp, ptr, 2);
396 ether_type = ntohs(be_tmp);
397
398 if ((psta != NULL) && (psta->ieee8021x_blocked)) {
399
400
401 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########%s:psta->ieee8021x_blocked==1\n", __func__));
402
403 if (ether_type == eapol_type) {
404 prtnframe = precv_frame;
405 } else {
406
407 rtw_free_recvframe(precv_frame, &adapter->recvpriv.free_recv_queue);
408 prtnframe = NULL;
409 }
410 } else {
411
412
413 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########%s:psta->ieee8021x_blocked==0\n", __func__));
414 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
415 ("%s:precv_frame->hdr.attrib.privacy=%x\n",
416 __func__, precv_frame->attrib.privacy));
417
418 if (pattrib->bdecrypted == 0)
419 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("%s:prxstat->decrypted=%x\n", __func__, pattrib->bdecrypted));
420
421 prtnframe = precv_frame;
422
423 if (ether_type == eapol_type) {
424 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("########%s:ether_type==0x888e\n", __func__));
425
426
427 prtnframe = precv_frame;
428 } else {
429 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########%s:ether_type=0x%04x\n", __func__, ether_type));
430 }
431 }
432 } else {
433 prtnframe = precv_frame;
434 }
435
436 return prtnframe;
437}
438
439static int recv_decache(struct recv_frame *precv_frame, u8 bretry,
440 struct stainfo_rxcache *prxcache)
441{
442 int tid = precv_frame->attrib.priority;
443
444 u16 seq_ctrl = ((precv_frame->attrib.seq_num&0xffff) << 4) |
445 (precv_frame->attrib.frag_num & 0xf);
446
447 if (tid > 15) {
448 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("%s, (tid>15)! seq_ctrl=0x%x, tid=0x%x\n", __func__, seq_ctrl, tid));
449
450 return _FAIL;
451 }
452
453 if (1) {
454 if (seq_ctrl == prxcache->tid_rxseq[tid]) {
455 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("%s, seq_ctrl=0x%x, tid=0x%x, tid_rxseq=0x%x\n", __func__, seq_ctrl, tid, prxcache->tid_rxseq[tid]));
456
457 return _FAIL;
458 }
459 }
460
461 prxcache->tid_rxseq[tid] = seq_ctrl;
462
463 return _SUCCESS;
464}
465
466static void process_pwrbit_data(struct adapter *padapter,
467 struct recv_frame *precv_frame)
468{
469#ifdef CONFIG_88EU_AP_MODE
470 unsigned char pwrbit;
471 u8 *ptr = precv_frame->pkt->data;
472 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
473 struct sta_priv *pstapriv = &padapter->stapriv;
474 struct sta_info *psta = NULL;
475
476 psta = rtw_get_stainfo(pstapriv, pattrib->src);
477
478 pwrbit = GetPwrMgt(ptr);
479
480 if (psta) {
481 if (pwrbit) {
482 if (!(psta->state & WIFI_SLEEP_STATE))
483 stop_sta_xmit(padapter, psta);
484 } else {
485 if (psta->state & WIFI_SLEEP_STATE)
486 wakeup_sta_to_xmit(padapter, psta);
487 }
488 }
489
490#endif
491}
492
493static void process_wmmps_data(struct adapter *padapter,
494 struct recv_frame *precv_frame)
495{
496#ifdef CONFIG_88EU_AP_MODE
497 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
498 struct sta_priv *pstapriv = &padapter->stapriv;
499 struct sta_info *psta = NULL;
500
501 psta = rtw_get_stainfo(pstapriv, pattrib->src);
502
503 if (!psta)
504 return;
505
506 if (!psta->qos_option)
507 return;
508
509 if (!(psta->qos_info&0xf))
510 return;
511
512 if (psta->state&WIFI_SLEEP_STATE) {
513 u8 wmmps_ac = 0;
514
515 switch (pattrib->priority) {
516 case 1:
517 case 2:
518 wmmps_ac = psta->uapsd_bk&BIT(1);
519 break;
520 case 4:
521 case 5:
522 wmmps_ac = psta->uapsd_vi&BIT(1);
523 break;
524 case 6:
525 case 7:
526 wmmps_ac = psta->uapsd_vo&BIT(1);
527 break;
528 case 0:
529 case 3:
530 default:
531 wmmps_ac = psta->uapsd_be&BIT(1);
532 break;
533 }
534
535 if (wmmps_ac) {
536 if (psta->sleepq_ac_len > 0) {
537
538 xmit_delivery_enabled_frames(padapter, psta);
539 } else {
540
541 issue_qos_nulldata(padapter, psta->hwaddr, (u16)pattrib->priority, 0, 0);
542 }
543 }
544 }
545
546#endif
547}
548
549static void count_rx_stats(struct adapter *padapter,
550 struct recv_frame *prframe,
551 struct sta_info *sta)
552{
553 int sz;
554 struct sta_info *psta = NULL;
555 struct stainfo_stats *pstats = NULL;
556 struct rx_pkt_attrib *pattrib = &prframe->attrib;
557 struct recv_priv *precvpriv = &padapter->recvpriv;
558
559 sz = prframe->pkt->len;
560 precvpriv->rx_bytes += sz;
561
562 padapter->mlmepriv.LinkDetectInfo.NumRxOkInPeriod++;
563
564 if ((!MacAddr_isBcst(pattrib->dst)) && (!IS_MCAST(pattrib->dst)))
565 padapter->mlmepriv.LinkDetectInfo.NumRxUnicastOkInPeriod++;
566
567 if (sta)
568 psta = sta;
569 else
570 psta = prframe->psta;
571
572 if (psta) {
573 pstats = &psta->sta_stats;
574
575 pstats->rx_data_pkts++;
576 pstats->rx_bytes += sz;
577 }
578}
579
580int sta2sta_data_frame(
581 struct adapter *adapter,
582 struct recv_frame *precv_frame,
583 struct sta_info **psta
584);
585
586int sta2sta_data_frame(struct adapter *adapter, struct recv_frame *precv_frame,
587 struct sta_info **psta)
588{
589 int ret = _SUCCESS;
590 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
591 struct sta_priv *pstapriv = &adapter->stapriv;
592 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
593 u8 *mybssid = get_bssid(pmlmepriv);
594 u8 *myhwaddr = myid(&adapter->eeprompriv);
595 u8 *sta_addr = NULL;
596 int bmcast = IS_MCAST(pattrib->dst);
597
598 if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true) ||
599 (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) == true)) {
600
601 if (!memcmp(myhwaddr, pattrib->src, ETH_ALEN)) {
602 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" SA==myself\n"));
603 ret = _FAIL;
604 goto exit;
605 }
606
607 if ((memcmp(myhwaddr, pattrib->dst, ETH_ALEN)) && (!bmcast)) {
608 ret = _FAIL;
609 goto exit;
610 }
611
612 if (!memcmp(pattrib->bssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
613 !memcmp(mybssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
614 memcmp(pattrib->bssid, mybssid, ETH_ALEN)) {
615 ret = _FAIL;
616 goto exit;
617 }
618
619 sta_addr = pattrib->src;
620 } else if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) {
621
622 if (memcmp(pattrib->bssid, pattrib->src, ETH_ALEN)) {
623 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("bssid!=TA under STATION_MODE; drop pkt\n"));
624 ret = _FAIL;
625 goto exit;
626 }
627 sta_addr = pattrib->bssid;
628 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
629 if (bmcast) {
630
631 if (!IS_MCAST(pattrib->bssid)) {
632 ret = _FAIL;
633 goto exit;
634 }
635 } else {
636
637 if (memcmp(pattrib->bssid, pattrib->dst, ETH_ALEN)) {
638 ret = _FAIL;
639 goto exit;
640 }
641
642 sta_addr = pattrib->src;
643 }
644 } else {
645 ret = _FAIL;
646 }
647
648 if (bmcast)
649 *psta = rtw_get_bcmc_stainfo(adapter);
650 else
651 *psta = rtw_get_stainfo(pstapriv, sta_addr);
652
653 if (*psta == NULL) {
654 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("can't get psta under %s ; drop pkt\n", __func__));
655 ret = _FAIL;
656 goto exit;
657 }
658
659exit:
660 return ret;
661}
662
663static int ap2sta_data_frame(
664 struct adapter *adapter,
665 struct recv_frame *precv_frame,
666 struct sta_info **psta)
667{
668 u8 *ptr = precv_frame->pkt->data;
669 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
670 int ret = _SUCCESS;
671 struct sta_priv *pstapriv = &adapter->stapriv;
672 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
673 u8 *mybssid = get_bssid(pmlmepriv);
674 u8 *myhwaddr = myid(&adapter->eeprompriv);
675 int bmcast = IS_MCAST(pattrib->dst);
676
677 if ((check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true) &&
678 (check_fwstate(pmlmepriv, _FW_LINKED) == true ||
679 check_fwstate(pmlmepriv, _FW_UNDER_LINKING))) {
680
681 if (!memcmp(myhwaddr, pattrib->src, ETH_ALEN)) {
682 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" SA==myself\n"));
683 ret = _FAIL;
684 goto exit;
685 }
686
687
688 if ((memcmp(myhwaddr, pattrib->dst, ETH_ALEN)) && (!bmcast)) {
689 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
690 (" %s: compare DA fail; DA=%pM\n", __func__, (pattrib->dst)));
691 ret = _FAIL;
692 goto exit;
693 }
694
695
696 if (!memcmp(pattrib->bssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
697 !memcmp(mybssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
698 (memcmp(pattrib->bssid, mybssid, ETH_ALEN))) {
699 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
700 (" %s: compare BSSID fail ; BSSID=%pM\n", __func__, (pattrib->bssid)));
701 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("mybssid=%pM\n", (mybssid)));
702
703 if (!bmcast) {
704 DBG_88E("issue_deauth to the nonassociated ap=%pM for the reason(7)\n", (pattrib->bssid));
705 issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
706 }
707
708 ret = _FAIL;
709 goto exit;
710 }
711
712 if (bmcast)
713 *psta = rtw_get_bcmc_stainfo(adapter);
714 else
715 *psta = rtw_get_stainfo(pstapriv, pattrib->bssid);
716
717 if (*psta == NULL) {
718 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("ap2sta: can't get psta under STATION_MODE ; drop pkt\n"));
719 ret = _FAIL;
720 goto exit;
721 }
722
723
724
725
726 if (GetFrameSubType(ptr) & BIT(6)) {
727
728 count_rx_stats(adapter, precv_frame, *psta);
729 ret = RTW_RX_HANDLED;
730 goto exit;
731 }
732 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
733
734 ret = RTW_RX_HANDLED;
735 goto exit;
736 } else {
737 if (!memcmp(myhwaddr, pattrib->dst, ETH_ALEN) && (!bmcast)) {
738 *psta = rtw_get_stainfo(pstapriv, pattrib->bssid);
739 if (*psta == NULL) {
740 DBG_88E("issue_deauth to the ap =%pM for the reason(7)\n", (pattrib->bssid));
741
742 issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
743 }
744 }
745
746 ret = _FAIL;
747 }
748
749exit:
750
751 return ret;
752}
753
754static int sta2ap_data_frame(struct adapter *adapter,
755 struct recv_frame *precv_frame,
756 struct sta_info **psta)
757{
758 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
759 struct sta_priv *pstapriv = &adapter->stapriv;
760 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
761 u8 *ptr = precv_frame->pkt->data;
762 unsigned char *mybssid = get_bssid(pmlmepriv);
763 int ret = _SUCCESS;
764
765 if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
766
767 if (memcmp(pattrib->bssid, mybssid, ETH_ALEN)) {
768 ret = _FAIL;
769 goto exit;
770 }
771
772 *psta = rtw_get_stainfo(pstapriv, pattrib->src);
773 if (*psta == NULL) {
774 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("can't get psta under AP_MODE; drop pkt\n"));
775 DBG_88E("issue_deauth to sta=%pM for the reason(7)\n", (pattrib->src));
776
777 issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
778
779 ret = RTW_RX_HANDLED;
780 goto exit;
781 }
782
783 process_pwrbit_data(adapter, precv_frame);
784
785 if ((GetFrameSubType(ptr) & WIFI_QOS_DATA_TYPE) == WIFI_QOS_DATA_TYPE)
786 process_wmmps_data(adapter, precv_frame);
787
788 if (GetFrameSubType(ptr) & BIT(6)) {
789
790 count_rx_stats(adapter, precv_frame, *psta);
791 ret = RTW_RX_HANDLED;
792 goto exit;
793 }
794 } else {
795 u8 *myhwaddr = myid(&adapter->eeprompriv);
796
797 if (memcmp(pattrib->ra, myhwaddr, ETH_ALEN)) {
798 ret = RTW_RX_HANDLED;
799 goto exit;
800 }
801 DBG_88E("issue_deauth to sta=%pM for the reason(7)\n", (pattrib->src));
802 issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
803 ret = RTW_RX_HANDLED;
804 goto exit;
805 }
806
807exit:
808
809 return ret;
810}
811
812static int validate_recv_ctrl_frame(struct adapter *padapter,
813 struct recv_frame *precv_frame)
814{
815#ifdef CONFIG_88EU_AP_MODE
816 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
817 struct sta_priv *pstapriv = &padapter->stapriv;
818 u8 *pframe = precv_frame->pkt->data;
819
820 if (GetFrameType(pframe) != WIFI_CTRL_TYPE)
821 return _FAIL;
822
823
824 if (memcmp(GetAddr1Ptr(pframe), myid(&padapter->eeprompriv), ETH_ALEN))
825 return _FAIL;
826
827
828 if (GetFrameSubType(pframe) == WIFI_PSPOLL) {
829 u16 aid;
830 u8 wmmps_ac = 0;
831 struct sta_info *psta = NULL;
832
833 aid = GetAid(pframe);
834 psta = rtw_get_stainfo(pstapriv, GetAddr2Ptr(pframe));
835
836 if ((psta == NULL) || (psta->aid != aid))
837 return _FAIL;
838
839
840 psta->sta_stats.rx_ctrl_pkts++;
841
842 switch (pattrib->priority) {
843 case 1:
844 case 2:
845 wmmps_ac = psta->uapsd_bk&BIT(0);
846 break;
847 case 4:
848 case 5:
849 wmmps_ac = psta->uapsd_vi&BIT(0);
850 break;
851 case 6:
852 case 7:
853 wmmps_ac = psta->uapsd_vo&BIT(0);
854 break;
855 case 0:
856 case 3:
857 default:
858 wmmps_ac = psta->uapsd_be&BIT(0);
859 break;
860 }
861
862 if (wmmps_ac)
863 return _FAIL;
864
865 if (psta->state & WIFI_STA_ALIVE_CHK_STATE) {
866 DBG_88E("%s alive check-rx ps-poll\n", __func__);
867 psta->expire_to = pstapriv->expire_to;
868 psta->state ^= WIFI_STA_ALIVE_CHK_STATE;
869 }
870
871 if ((psta->state&WIFI_SLEEP_STATE) && (pstapriv->sta_dz_bitmap&BIT(psta->aid))) {
872 struct list_head *xmitframe_plist, *xmitframe_phead;
873 struct xmit_frame *pxmitframe = NULL;
874
875 spin_lock_bh(&psta->sleep_q.lock);
876
877 xmitframe_phead = get_list_head(&psta->sleep_q);
878 xmitframe_plist = xmitframe_phead->next;
879
880 if (xmitframe_phead != xmitframe_plist) {
881 pxmitframe = list_entry(xmitframe_plist, struct xmit_frame, list);
882
883 xmitframe_plist = xmitframe_plist->next;
884
885 list_del_init(&pxmitframe->list);
886
887 psta->sleepq_len--;
888
889 if (psta->sleepq_len > 0)
890 pxmitframe->attrib.mdata = 1;
891 else
892 pxmitframe->attrib.mdata = 0;
893
894 pxmitframe->attrib.triggered = 1;
895
896 spin_unlock_bh(&psta->sleep_q.lock);
897 if (rtw_hal_xmit(padapter, pxmitframe) == true)
898 rtw_os_xmit_complete(padapter, pxmitframe);
899 spin_lock_bh(&psta->sleep_q.lock);
900
901 if (psta->sleepq_len == 0) {
902 pstapriv->tim_bitmap &= ~BIT(psta->aid);
903
904
905
906 update_beacon(padapter, _TIM_IE_, NULL, false);
907 }
908 } else {
909 if (pstapriv->tim_bitmap&BIT(psta->aid)) {
910 if (psta->sleepq_len == 0) {
911 DBG_88E("no buffered packets to xmit\n");
912
913
914 issue_nulldata(padapter, psta->hwaddr, 0, 0, 0);
915 } else {
916 DBG_88E("error!psta->sleepq_len=%d\n", psta->sleepq_len);
917 psta->sleepq_len = 0;
918 }
919
920 pstapriv->tim_bitmap &= ~BIT(psta->aid);
921
922
923
924 update_beacon(padapter, _TIM_IE_, NULL, false);
925 }
926 }
927
928 spin_unlock_bh(&psta->sleep_q.lock);
929 }
930 }
931
932#endif
933
934 return _FAIL;
935}
936
937struct recv_frame *recvframe_chk_defrag(struct adapter *padapter,
938 struct recv_frame *precv_frame);
939
940static int validate_recv_mgnt_frame(struct adapter *padapter,
941 struct recv_frame *precv_frame)
942{
943 struct sta_info *psta;
944
945 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("+%s\n", __func__));
946
947 precv_frame = recvframe_chk_defrag(padapter, precv_frame);
948 if (!precv_frame) {
949 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
950 ("%s: fragment packet\n", __func__));
951 return _SUCCESS;
952 }
953
954
955 psta = rtw_get_stainfo(&padapter->stapriv,
956 GetAddr2Ptr(precv_frame->pkt->data));
957 if (psta) {
958 psta->sta_stats.rx_mgnt_pkts++;
959 if (GetFrameSubType(precv_frame->pkt->data) == WIFI_BEACON) {
960 psta->sta_stats.rx_beacon_pkts++;
961 } else if (GetFrameSubType(precv_frame->pkt->data) == WIFI_PROBEREQ) {
962 psta->sta_stats.rx_probereq_pkts++;
963 } else if (GetFrameSubType(precv_frame->pkt->data) == WIFI_PROBERSP) {
964 if (!memcmp(padapter->eeprompriv.mac_addr,
965 GetAddr1Ptr(precv_frame->pkt->data), ETH_ALEN))
966 psta->sta_stats.rx_probersp_pkts++;
967 else if (is_broadcast_mac_addr(GetAddr1Ptr(precv_frame->pkt->data)) ||
968 is_multicast_mac_addr(GetAddr1Ptr(precv_frame->pkt->data)))
969 psta->sta_stats.rx_probersp_bm_pkts++;
970 else
971 psta->sta_stats.rx_probersp_uo_pkts++;
972 }
973 }
974
975 mgt_dispatcher(padapter, precv_frame);
976
977 return _SUCCESS;
978}
979
980static int validate_recv_data_frame(struct adapter *adapter,
981 struct recv_frame *precv_frame)
982{
983 u8 bretry;
984 u8 *psa, *pda, *pbssid;
985 struct sta_info *psta = NULL;
986 u8 *ptr = precv_frame->pkt->data;
987 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
988 struct security_priv *psecuritypriv = &adapter->securitypriv;
989 int ret = _SUCCESS;
990
991 bretry = GetRetry(ptr);
992 pda = get_da(ptr);
993 psa = get_sa(ptr);
994 pbssid = get_hdr_bssid(ptr);
995
996 if (!pbssid) {
997 ret = _FAIL;
998 goto exit;
999 }
1000
1001 memcpy(pattrib->dst, pda, ETH_ALEN);
1002 memcpy(pattrib->src, psa, ETH_ALEN);
1003
1004 memcpy(pattrib->bssid, pbssid, ETH_ALEN);
1005
1006 switch (pattrib->to_fr_ds) {
1007 case 0:
1008 memcpy(pattrib->ra, pda, ETH_ALEN);
1009 memcpy(pattrib->ta, psa, ETH_ALEN);
1010 ret = sta2sta_data_frame(adapter, precv_frame, &psta);
1011 break;
1012 case 1:
1013 memcpy(pattrib->ra, pda, ETH_ALEN);
1014 memcpy(pattrib->ta, pbssid, ETH_ALEN);
1015 ret = ap2sta_data_frame(adapter, precv_frame, &psta);
1016 break;
1017 case 2:
1018 memcpy(pattrib->ra, pbssid, ETH_ALEN);
1019 memcpy(pattrib->ta, psa, ETH_ALEN);
1020 ret = sta2ap_data_frame(adapter, precv_frame, &psta);
1021 break;
1022 case 3:
1023 memcpy(pattrib->ra, GetAddr1Ptr(ptr), ETH_ALEN);
1024 memcpy(pattrib->ta, GetAddr2Ptr(ptr), ETH_ALEN);
1025 ret = _FAIL;
1026 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" case 3\n"));
1027 break;
1028 default:
1029 ret = _FAIL;
1030 break;
1031 }
1032
1033 if (ret == _FAIL)
1034 goto exit;
1035 else if (ret == RTW_RX_HANDLED)
1036 goto exit;
1037
1038 if (!psta) {
1039 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" after to_fr_ds_chk; psta==NULL\n"));
1040 ret = _FAIL;
1041 goto exit;
1042 }
1043
1044
1045
1046 precv_frame->psta = psta;
1047
1048 pattrib->amsdu = 0;
1049 pattrib->ack_policy = 0;
1050
1051 if (pattrib->qos == 1) {
1052 pattrib->priority = GetPriority((ptr + 24));
1053 pattrib->ack_policy = GetAckpolicy((ptr + 24));
1054 pattrib->amsdu = GetAMsdu((ptr + 24));
1055 pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 32 : 26;
1056
1057 if (pattrib->priority != 0 && pattrib->priority != 3)
1058 adapter->recvpriv.bIsAnyNonBEPkts = true;
1059 } else {
1060 pattrib->priority = 0;
1061 pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 30 : 24;
1062 }
1063
1064 if (pattrib->order)
1065 pattrib->hdrlen += 4;
1066
1067 precv_frame->preorder_ctrl = &psta->recvreorder_ctrl[pattrib->priority];
1068
1069
1070 if (recv_decache(precv_frame, bretry, &psta->sta_recvpriv.rxcache) == _FAIL) {
1071 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("decache : drop pkt\n"));
1072 ret = _FAIL;
1073 goto exit;
1074 }
1075
1076 if (pattrib->privacy) {
1077 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("%s:pattrib->privacy=%x\n", __func__, pattrib->privacy));
1078 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n ^^^^^^^^^^^IS_MCAST(pattrib->ra(0x%02x))=%d^^^^^^^^^^^^^^^6\n", pattrib->ra[0], IS_MCAST(pattrib->ra)));
1079
1080 GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, IS_MCAST(pattrib->ra));
1081
1082 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n pattrib->encrypt=%d\n", pattrib->encrypt));
1083
1084 SET_ICE_IV_LEN(pattrib->iv_len, pattrib->icv_len, pattrib->encrypt);
1085 } else {
1086 pattrib->encrypt = 0;
1087 pattrib->iv_len = 0;
1088 pattrib->icv_len = 0;
1089 }
1090
1091exit:
1092
1093 return ret;
1094}
1095
1096static int validate_recv_frame(struct adapter *adapter,
1097 struct recv_frame *precv_frame)
1098{
1099
1100
1101
1102
1103 u8 type;
1104 u8 subtype;
1105 int retval = _SUCCESS;
1106 u8 bDumpRxPkt;
1107 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
1108 u8 *ptr = precv_frame->pkt->data;
1109 u8 ver = (unsigned char)(*ptr)&0x3;
1110 struct mlme_ext_priv *pmlmeext = &adapter->mlmeextpriv;
1111
1112 if (pmlmeext->sitesurvey_res.state == SCAN_PROCESS) {
1113 int ch_set_idx = rtw_ch_set_search_ch(pmlmeext->channel_set, rtw_get_oper_ch(adapter));
1114
1115 if (ch_set_idx >= 0)
1116 pmlmeext->channel_set[ch_set_idx].rx_count++;
1117 }
1118
1119
1120 if (ver != 0) {
1121 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_data_frame fail! (ver!=0)\n"));
1122 retval = _FAIL;
1123 goto exit;
1124 }
1125
1126 type = GetFrameType(ptr);
1127 subtype = GetFrameSubType(ptr);
1128
1129 pattrib->to_fr_ds = get_tofr_ds(ptr);
1130
1131 pattrib->frag_num = GetFragNum(ptr);
1132 pattrib->seq_num = GetSequence(ptr);
1133
1134 pattrib->pw_save = GetPwrMgt(ptr);
1135 pattrib->mfrag = GetMFrag(ptr);
1136 pattrib->mdata = GetMData(ptr);
1137 pattrib->privacy = GetPrivacy(ptr);
1138 pattrib->order = GetOrder(ptr);
1139
1140
1141 rtw_hal_get_def_var(adapter, HAL_DEF_DBG_DUMP_RXPKT, &(bDumpRxPkt));
1142 if (bDumpRxPkt == 1) {
1143 if (_drv_err_ <= GlobalDebugLevel) {
1144 pr_info(DRIVER_PREFIX "#############################\n");
1145 print_hex_dump(KERN_INFO, DRIVER_PREFIX, DUMP_PREFIX_NONE,
1146 16, 1, ptr, 64, false);
1147 pr_info(DRIVER_PREFIX "#############################\n");
1148 }
1149 } else if (bDumpRxPkt == 2) {
1150 if ((_drv_err_ <= GlobalDebugLevel) && (type == WIFI_MGT_TYPE)) {
1151 pr_info(DRIVER_PREFIX "#############################\n");
1152 print_hex_dump(KERN_INFO, DRIVER_PREFIX, DUMP_PREFIX_NONE,
1153 16, 1, ptr, 64, false);
1154 pr_info(DRIVER_PREFIX "#############################\n");
1155 }
1156 } else if (bDumpRxPkt == 3) {
1157 if ((_drv_err_ <= GlobalDebugLevel) && (type == WIFI_DATA_TYPE)) {
1158 pr_info(DRIVER_PREFIX "#############################\n");
1159 print_hex_dump(KERN_INFO, DRIVER_PREFIX, DUMP_PREFIX_NONE,
1160 16, 1, ptr, 64, false);
1161 pr_info(DRIVER_PREFIX "#############################\n");
1162 }
1163 }
1164 switch (type) {
1165 case WIFI_MGT_TYPE:
1166 retval = validate_recv_mgnt_frame(adapter, precv_frame);
1167 if (retval == _FAIL)
1168 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_mgnt_frame fail\n"));
1169 retval = _FAIL;
1170 break;
1171 case WIFI_CTRL_TYPE:
1172 retval = validate_recv_ctrl_frame(adapter, precv_frame);
1173 if (retval == _FAIL)
1174 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_ctrl_frame fail\n"));
1175 retval = _FAIL;
1176 break;
1177 case WIFI_DATA_TYPE:
1178 LedControl8188eu(adapter, LED_CTL_RX);
1179 pattrib->qos = (subtype & BIT(7)) ? 1 : 0;
1180 retval = validate_recv_data_frame(adapter, precv_frame);
1181 if (retval == _FAIL) {
1182 struct recv_priv *precvpriv = &adapter->recvpriv;
1183
1184 precvpriv->rx_drop++;
1185 }
1186 break;
1187 default:
1188 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_data_frame fail! type= 0x%x\n", type));
1189 retval = _FAIL;
1190 break;
1191 }
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204 rtl88eu_mon_recv_hook(adapter->pmondev, precv_frame);
1205
1206exit:
1207
1208 return retval;
1209}
1210
1211
1212
1213static int wlanhdr_to_ethhdr(struct recv_frame *precvframe)
1214{
1215 int rmv_len;
1216 u16 eth_type, len;
1217 __be16 be_tmp;
1218 u8 bsnaphdr;
1219 u8 *psnap_type;
1220 struct ieee80211_snap_hdr *psnap;
1221
1222 u8 *ptr = precvframe->pkt->data;
1223 struct rx_pkt_attrib *pattrib = &precvframe->attrib;
1224
1225 if (pattrib->encrypt)
1226 skb_trim(precvframe->pkt, precvframe->pkt->len - pattrib->icv_len);
1227
1228 psnap = (struct ieee80211_snap_hdr *)(ptr+pattrib->hdrlen + pattrib->iv_len);
1229 psnap_type = ptr+pattrib->hdrlen + pattrib->iv_len+SNAP_SIZE;
1230
1231 if ((!memcmp(psnap, rtw_rfc1042_header, SNAP_SIZE) &&
1232 (!memcmp(psnap_type, SNAP_ETH_TYPE_IPX, 2) == false) &&
1233 (!memcmp(psnap_type, SNAP_ETH_TYPE_APPLETALK_AARP, 2) == false)) ||
1234 !memcmp(psnap, rtw_bridge_tunnel_header, SNAP_SIZE)) {
1235
1236 bsnaphdr = true;
1237 } else {
1238
1239 bsnaphdr = false;
1240 }
1241
1242 rmv_len = pattrib->hdrlen + pattrib->iv_len + (bsnaphdr ? SNAP_SIZE : 0);
1243 len = precvframe->pkt->len - rmv_len;
1244
1245 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
1246 ("\n===pattrib->hdrlen: %x, pattrib->iv_len:%x===\n\n", pattrib->hdrlen, pattrib->iv_len));
1247
1248 memcpy(&be_tmp, ptr+rmv_len, 2);
1249 eth_type = ntohs(be_tmp);
1250 pattrib->eth_type = eth_type;
1251
1252 ptr = skb_pull(precvframe->pkt, rmv_len - sizeof(struct ethhdr) + (bsnaphdr ? 2 : 0));
1253 if (!ptr)
1254 return _FAIL;
1255
1256 memcpy(ptr, pattrib->dst, ETH_ALEN);
1257 memcpy(ptr+ETH_ALEN, pattrib->src, ETH_ALEN);
1258
1259 if (!bsnaphdr) {
1260 be_tmp = htons(len);
1261 memcpy(ptr+12, &be_tmp, 2);
1262 }
1263
1264 return _SUCCESS;
1265}
1266
1267
1268static struct recv_frame *recvframe_defrag(struct adapter *adapter,
1269 struct __queue *defrag_q)
1270{
1271 struct list_head *plist, *phead;
1272 u8 wlanhdr_offset;
1273 u8 curfragnum;
1274 struct recv_frame *pfhdr, *pnfhdr;
1275 struct recv_frame *prframe, *pnextrframe;
1276 struct __queue *pfree_recv_queue;
1277
1278 curfragnum = 0;
1279 pfree_recv_queue = &adapter->recvpriv.free_recv_queue;
1280
1281 phead = get_list_head(defrag_q);
1282 plist = phead->next;
1283 pfhdr = list_entry(plist, struct recv_frame, list);
1284 prframe = pfhdr;
1285 list_del_init(&(prframe->list));
1286
1287 if (curfragnum != pfhdr->attrib.frag_num) {
1288
1289
1290 rtw_free_recvframe(prframe, pfree_recv_queue);
1291 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
1292
1293 return NULL;
1294 }
1295
1296 curfragnum++;
1297
1298 plist = get_list_head(defrag_q);
1299
1300 plist = plist->next;
1301
1302 while (phead != plist) {
1303 pnfhdr = list_entry(plist, struct recv_frame, list);
1304 pnextrframe = pnfhdr;
1305
1306
1307
1308 if (curfragnum != pnfhdr->attrib.frag_num) {
1309
1310
1311 rtw_free_recvframe(prframe, pfree_recv_queue);
1312 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
1313 return NULL;
1314 }
1315
1316 curfragnum++;
1317
1318
1319
1320
1321 wlanhdr_offset = pnfhdr->attrib.hdrlen + pnfhdr->attrib.iv_len;
1322
1323 skb_pull(pnextrframe->pkt, wlanhdr_offset);
1324
1325
1326 skb_trim(prframe->pkt, prframe->pkt->len - pfhdr->attrib.icv_len);
1327
1328
1329 memcpy(skb_tail_pointer(pfhdr->pkt), pnfhdr->pkt->data,
1330 pnfhdr->pkt->len);
1331
1332 skb_put(prframe->pkt, pnfhdr->pkt->len);
1333
1334 pfhdr->attrib.icv_len = pnfhdr->attrib.icv_len;
1335 plist = plist->next;
1336 }
1337
1338
1339 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
1340
1341 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("Performance defrag!!!!!\n"));
1342
1343 return prframe;
1344}
1345
1346
1347struct recv_frame *recvframe_chk_defrag(struct adapter *padapter,
1348 struct recv_frame *precv_frame)
1349{
1350 u8 ismfrag;
1351 u8 fragnum;
1352 u8 *psta_addr;
1353 struct recv_frame *pfhdr;
1354 struct sta_info *psta;
1355 struct sta_priv *pstapriv;
1356 struct list_head *phead;
1357 struct recv_frame *prtnframe = NULL;
1358 struct __queue *pfree_recv_queue, *pdefrag_q;
1359
1360 pstapriv = &padapter->stapriv;
1361
1362 pfhdr = precv_frame;
1363
1364 pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
1365
1366
1367 ismfrag = pfhdr->attrib.mfrag;
1368 fragnum = pfhdr->attrib.frag_num;
1369
1370 psta_addr = pfhdr->attrib.ta;
1371 psta = rtw_get_stainfo(pstapriv, psta_addr);
1372 if (!psta) {
1373 u8 type = GetFrameType(pfhdr->pkt->data);
1374
1375 if (type != WIFI_DATA_TYPE) {
1376 psta = rtw_get_bcmc_stainfo(padapter);
1377 pdefrag_q = &psta->sta_recvpriv.defrag_q;
1378 } else {
1379 pdefrag_q = NULL;
1380 }
1381 } else {
1382 pdefrag_q = &psta->sta_recvpriv.defrag_q;
1383 }
1384
1385 if ((ismfrag == 0) && (fragnum == 0))
1386 prtnframe = precv_frame;
1387
1388 if (ismfrag == 1) {
1389
1390
1391 if (pdefrag_q) {
1392 if (fragnum == 0) {
1393
1394 if (!list_empty(&pdefrag_q->queue))
1395
1396 rtw_free_recvframe_queue(pdefrag_q, pfree_recv_queue);
1397 }
1398
1399
1400
1401 phead = get_list_head(pdefrag_q);
1402 list_add_tail(&pfhdr->list, phead);
1403
1404 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("Enqueuq: ismfrag=%d, fragnum=%d\n", ismfrag, fragnum));
1405
1406 prtnframe = NULL;
1407 } else {
1408
1409 rtw_free_recvframe(precv_frame, pfree_recv_queue);
1410 prtnframe = NULL;
1411 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("Free because pdefrag_q==NULL: ismfrag=%d, fragnum=%d\n", ismfrag, fragnum));
1412 }
1413 }
1414
1415 if ((ismfrag == 0) && (fragnum != 0)) {
1416
1417
1418 if (pdefrag_q) {
1419 phead = get_list_head(pdefrag_q);
1420 list_add_tail(&pfhdr->list, phead);
1421
1422
1423 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("defrag: ismfrag=%d, fragnum=%d\n", ismfrag, fragnum));
1424 precv_frame = recvframe_defrag(padapter, pdefrag_q);
1425 prtnframe = precv_frame;
1426 } else {
1427
1428 rtw_free_recvframe(precv_frame, pfree_recv_queue);
1429 prtnframe = NULL;
1430 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("Free because pdefrag_q==NULL: ismfrag=%d, fragnum=%d\n", ismfrag, fragnum));
1431 }
1432 }
1433
1434 if ((prtnframe != NULL) && (prtnframe->attrib.privacy)) {
1435
1436 if (recvframe_chkmic(padapter, prtnframe) == _FAIL) {
1437 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvframe_chkmic(padapter, prtnframe)==_FAIL\n"));
1438 rtw_free_recvframe(prtnframe, pfree_recv_queue);
1439 prtnframe = NULL;
1440 }
1441 }
1442
1443 return prtnframe;
1444}
1445
1446static int amsdu_to_msdu(struct adapter *padapter, struct recv_frame *prframe)
1447{
1448 int a_len, padding_len;
1449 u16 eth_type, nSubframe_Length;
1450 u8 nr_subframes, i;
1451 unsigned char *pdata;
1452 struct rx_pkt_attrib *pattrib;
1453 struct sk_buff *sub_skb, *subframes[MAX_SUBFRAME_COUNT];
1454 struct recv_priv *precvpriv = &padapter->recvpriv;
1455 struct __queue *pfree_recv_queue = &(precvpriv->free_recv_queue);
1456
1457 nr_subframes = 0;
1458 pattrib = &prframe->attrib;
1459
1460 skb_pull(prframe->pkt, prframe->attrib.hdrlen);
1461
1462 if (prframe->attrib.iv_len > 0)
1463 skb_pull(prframe->pkt, prframe->attrib.iv_len);
1464
1465 a_len = prframe->pkt->len;
1466
1467 pdata = prframe->pkt->data;
1468
1469 while (a_len > ETH_HLEN) {
1470
1471 nSubframe_Length = get_unaligned_be16(pdata + 12);
1472
1473 if (a_len < (ETHERNET_HEADER_SIZE + nSubframe_Length)) {
1474 DBG_88E("nRemain_Length is %d and nSubframe_Length is : %d\n", a_len, nSubframe_Length);
1475 goto exit;
1476 }
1477
1478
1479 pdata += ETH_HLEN;
1480 a_len -= ETH_HLEN;
1481
1482
1483 sub_skb = dev_alloc_skb(nSubframe_Length + 12);
1484 if (sub_skb) {
1485 skb_reserve(sub_skb, 12);
1486 skb_put_data(sub_skb, pdata, nSubframe_Length);
1487 } else {
1488 sub_skb = skb_clone(prframe->pkt, GFP_ATOMIC);
1489 if (sub_skb) {
1490 sub_skb->data = pdata;
1491 sub_skb->len = nSubframe_Length;
1492 skb_set_tail_pointer(sub_skb, nSubframe_Length);
1493 } else {
1494 DBG_88E("skb_clone() Fail!!! , nr_subframes=%d\n", nr_subframes);
1495 break;
1496 }
1497 }
1498
1499 subframes[nr_subframes++] = sub_skb;
1500
1501 if (nr_subframes >= MAX_SUBFRAME_COUNT) {
1502 DBG_88E("ParseSubframe(): Too many Subframes! Packets dropped!\n");
1503 break;
1504 }
1505
1506 pdata += nSubframe_Length;
1507 a_len -= nSubframe_Length;
1508 if (a_len != 0) {
1509 padding_len = 4 - ((nSubframe_Length + ETH_HLEN) & (4-1));
1510 if (padding_len == 4)
1511 padding_len = 0;
1512
1513 if (a_len < padding_len)
1514 goto exit;
1515
1516 pdata += padding_len;
1517 a_len -= padding_len;
1518 }
1519 }
1520
1521 for (i = 0; i < nr_subframes; i++) {
1522 sub_skb = subframes[i];
1523
1524 eth_type = get_unaligned_be16(&sub_skb->data[6]);
1525 if (sub_skb->len >= 8 &&
1526 ((!memcmp(sub_skb->data, rtw_rfc1042_header, SNAP_SIZE) &&
1527 eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) ||
1528 !memcmp(sub_skb->data, rtw_bridge_tunnel_header, SNAP_SIZE))) {
1529
1530 skb_pull(sub_skb, SNAP_SIZE);
1531 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN);
1532 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst, ETH_ALEN);
1533 } else {
1534 __be16 len;
1535
1536 len = htons(sub_skb->len);
1537 memcpy(skb_push(sub_skb, 2), &len, 2);
1538 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN);
1539 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst, ETH_ALEN);
1540 }
1541
1542
1543
1544 sub_skb->protocol = eth_type_trans(sub_skb, padapter->pnetdev);
1545 sub_skb->dev = padapter->pnetdev;
1546
1547 sub_skb->ip_summed = CHECKSUM_NONE;
1548
1549 netif_rx(sub_skb);
1550 }
1551
1552exit:
1553 rtw_free_recvframe(prframe, pfree_recv_queue);
1554
1555 return _SUCCESS;
1556}
1557
1558static int check_indicate_seq(struct recv_reorder_ctrl *preorder_ctrl, u16 seq_num)
1559{
1560 u8 wsize = preorder_ctrl->wsize_b;
1561 u16 wend = (preorder_ctrl->indicate_seq + wsize - 1) & 0xFFF;
1562
1563
1564 if (preorder_ctrl->indicate_seq == 0xFFFF)
1565 preorder_ctrl->indicate_seq = seq_num;
1566
1567
1568 if (SN_LESS(seq_num, preorder_ctrl->indicate_seq))
1569 return false;
1570
1571
1572
1573
1574
1575
1576 if (SN_EQUAL(seq_num, preorder_ctrl->indicate_seq)) {
1577 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF;
1578 } else if (SN_LESS(wend, seq_num)) {
1579 if (seq_num >= (wsize - 1))
1580 preorder_ctrl->indicate_seq = seq_num + 1 - wsize;
1581 else
1582 preorder_ctrl->indicate_seq = 0xFFF - (wsize - (seq_num + 1)) + 1;
1583 }
1584
1585 return true;
1586}
1587
1588static int enqueue_reorder_recvframe(struct recv_reorder_ctrl *preorder_ctrl,
1589 struct recv_frame *prframe)
1590{
1591 struct rx_pkt_attrib *pattrib = &prframe->attrib;
1592 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
1593 struct list_head *phead, *plist;
1594 struct recv_frame *hdr;
1595 struct rx_pkt_attrib *pnextattrib;
1596
1597 phead = get_list_head(ppending_recvframe_queue);
1598 plist = phead->next;
1599
1600 while (phead != plist) {
1601 hdr = list_entry(plist, struct recv_frame, list);
1602 pnextattrib = &hdr->attrib;
1603
1604 if (SN_LESS(pnextattrib->seq_num, pattrib->seq_num))
1605 plist = plist->next;
1606 else if (SN_EQUAL(pnextattrib->seq_num, pattrib->seq_num))
1607 return false;
1608 else
1609 break;
1610 }
1611
1612 list_del_init(&(prframe->list));
1613
1614 list_add_tail(&(prframe->list), plist);
1615 return true;
1616}
1617
1618static int recv_indicatepkts_in_order(struct adapter *padapter, struct recv_reorder_ctrl *preorder_ctrl, int bforced)
1619{
1620 struct list_head *phead, *plist;
1621 struct recv_frame *prframe;
1622 struct recv_frame *prhdr;
1623 struct rx_pkt_attrib *pattrib;
1624 int bPktInBuf = false;
1625 struct recv_priv *precvpriv = &padapter->recvpriv;
1626 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
1627
1628 phead = get_list_head(ppending_recvframe_queue);
1629 plist = phead->next;
1630
1631
1632 if (bforced) {
1633 if (list_empty(phead))
1634 return true;
1635
1636 prhdr = list_entry(plist, struct recv_frame, list);
1637 pattrib = &prhdr->attrib;
1638 preorder_ctrl->indicate_seq = pattrib->seq_num;
1639 }
1640
1641
1642
1643 while (!list_empty(phead)) {
1644 prhdr = list_entry(plist, struct recv_frame, list);
1645 prframe = prhdr;
1646 pattrib = &prframe->attrib;
1647
1648 if (!SN_LESS(preorder_ctrl->indicate_seq, pattrib->seq_num)) {
1649 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
1650 ("%s: indicate=%d seq=%d amsdu=%d\n",
1651 __func__, preorder_ctrl->indicate_seq, pattrib->seq_num, pattrib->amsdu));
1652 plist = plist->next;
1653 list_del_init(&(prframe->list));
1654
1655 if (SN_EQUAL(preorder_ctrl->indicate_seq, pattrib->seq_num))
1656 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF;
1657
1658
1659
1660
1661 if (!pattrib->amsdu) {
1662 if ((!padapter->bDriverStopped) &&
1663 (!padapter->bSurpriseRemoved))
1664 rtw_recv_indicatepkt(padapter, prframe);
1665 } else if (pattrib->amsdu == 1) {
1666 if (amsdu_to_msdu(padapter, prframe) != _SUCCESS)
1667 rtw_free_recvframe(prframe, &precvpriv->free_recv_queue);
1668 } else {
1669
1670 }
1671
1672
1673 bPktInBuf = false;
1674 } else {
1675 bPktInBuf = true;
1676 break;
1677 }
1678 }
1679 return bPktInBuf;
1680}
1681
1682static int recv_indicatepkt_reorder(struct adapter *padapter,
1683 struct recv_frame *prframe)
1684{
1685 int retval = _SUCCESS;
1686 struct rx_pkt_attrib *pattrib = &prframe->attrib;
1687 struct recv_reorder_ctrl *preorder_ctrl = prframe->preorder_ctrl;
1688 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
1689
1690 if (!pattrib->amsdu) {
1691
1692 wlanhdr_to_ethhdr(prframe);
1693
1694 if ((pattrib->qos != 1) || (pattrib->eth_type == 0x0806) ||
1695 (pattrib->ack_policy != 0)) {
1696 if ((!padapter->bDriverStopped) &&
1697 (!padapter->bSurpriseRemoved)) {
1698 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("@@@@ %s -recv_func recv_indicatepkt\n", __func__));
1699
1700 rtw_recv_indicatepkt(padapter, prframe);
1701 return _SUCCESS;
1702 }
1703
1704 return _FAIL;
1705 }
1706
1707 if (!preorder_ctrl->enable) {
1708
1709 preorder_ctrl->indicate_seq = pattrib->seq_num;
1710 rtw_recv_indicatepkt(padapter, prframe);
1711
1712 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096;
1713 return _SUCCESS;
1714 }
1715 } else if (pattrib->amsdu == 1) {
1716 if (!preorder_ctrl->enable) {
1717 preorder_ctrl->indicate_seq = pattrib->seq_num;
1718 retval = amsdu_to_msdu(padapter, prframe);
1719
1720 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096;
1721 return retval;
1722 }
1723 }
1724
1725 spin_lock_bh(&ppending_recvframe_queue->lock);
1726
1727 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
1728 ("%s: indicate=%d seq=%d\n", __func__,
1729 preorder_ctrl->indicate_seq, pattrib->seq_num));
1730
1731
1732 if (!check_indicate_seq(preorder_ctrl, pattrib->seq_num)) {
1733 rtw_recv_indicatepkt(padapter, prframe);
1734
1735 spin_unlock_bh(&ppending_recvframe_queue->lock);
1736
1737 goto _success_exit;
1738 }
1739
1740
1741 if (!enqueue_reorder_recvframe(preorder_ctrl, prframe))
1742 goto _err_exit;
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755 if (recv_indicatepkts_in_order(padapter, preorder_ctrl, false)) {
1756 mod_timer(&preorder_ctrl->reordering_ctrl_timer,
1757 jiffies + msecs_to_jiffies(REORDER_WAIT_TIME));
1758 spin_unlock_bh(&ppending_recvframe_queue->lock);
1759 } else {
1760 spin_unlock_bh(&ppending_recvframe_queue->lock);
1761 del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
1762 }
1763
1764_success_exit:
1765
1766 return _SUCCESS;
1767
1768_err_exit:
1769
1770 spin_unlock_bh(&ppending_recvframe_queue->lock);
1771
1772 return _FAIL;
1773}
1774
1775void rtw_reordering_ctrl_timeout_handler(struct timer_list *t)
1776{
1777 struct recv_reorder_ctrl *preorder_ctrl = from_timer(preorder_ctrl, t,
1778 reordering_ctrl_timer);
1779 struct adapter *padapter = preorder_ctrl->padapter;
1780 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
1781
1782 if (padapter->bDriverStopped || padapter->bSurpriseRemoved)
1783 return;
1784
1785 spin_lock_bh(&ppending_recvframe_queue->lock);
1786
1787 if (recv_indicatepkts_in_order(padapter, preorder_ctrl, true) == true)
1788 mod_timer(&preorder_ctrl->reordering_ctrl_timer,
1789 jiffies + msecs_to_jiffies(REORDER_WAIT_TIME));
1790
1791 spin_unlock_bh(&ppending_recvframe_queue->lock);
1792}
1793
1794static int process_recv_indicatepkts(struct adapter *padapter,
1795 struct recv_frame *prframe)
1796{
1797 int retval = _SUCCESS;
1798 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
1799 struct ht_priv *phtpriv = &pmlmepriv->htpriv;
1800
1801 if (phtpriv->ht_option) {
1802 if (recv_indicatepkt_reorder(padapter, prframe) != _SUCCESS) {
1803
1804 if ((!padapter->bDriverStopped) &&
1805 (!padapter->bSurpriseRemoved)) {
1806 retval = _FAIL;
1807 return retval;
1808 }
1809 }
1810 } else {
1811 retval = wlanhdr_to_ethhdr(prframe);
1812 if (retval != _SUCCESS) {
1813 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("wlanhdr_to_ethhdr: drop pkt\n"));
1814 return retval;
1815 }
1816
1817 if ((!padapter->bDriverStopped) &&
1818 (!padapter->bSurpriseRemoved)) {
1819
1820 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("@@@@ %s- recv_func recv_indicatepkt\n", __func__));
1821 rtw_recv_indicatepkt(padapter, prframe);
1822 } else {
1823 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("@@@@ %s- recv_func free_indicatepkt\n", __func__));
1824
1825 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("recv_func:bDriverStopped(%d) OR bSurpriseRemoved(%d)", padapter->bDriverStopped, padapter->bSurpriseRemoved));
1826 retval = _FAIL;
1827 return retval;
1828 }
1829 }
1830
1831 return retval;
1832}
1833
1834static int recv_func_prehandle(struct adapter *padapter,
1835 struct recv_frame *rframe)
1836{
1837 int ret = _SUCCESS;
1838 struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
1839
1840
1841 ret = validate_recv_frame(padapter, rframe);
1842 if (ret != _SUCCESS) {
1843 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("recv_func: validate_recv_frame fail! drop pkt\n"));
1844 rtw_free_recvframe(rframe, pfree_recv_queue);
1845 goto exit;
1846 }
1847
1848exit:
1849 return ret;
1850}
1851
1852static int recv_func_posthandle(struct adapter *padapter,
1853 struct recv_frame *prframe)
1854{
1855 int ret = _SUCCESS;
1856 struct recv_frame *orig_prframe = prframe;
1857 struct recv_priv *precvpriv = &padapter->recvpriv;
1858 struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
1859
1860
1861 LedControl8188eu(padapter, LED_CTL_RX);
1862
1863 prframe = decryptor(padapter, prframe);
1864 if (!prframe) {
1865 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("decryptor: drop pkt\n"));
1866 ret = _FAIL;
1867 goto _recv_data_drop;
1868 }
1869
1870 prframe = recvframe_chk_defrag(padapter, prframe);
1871 if (!prframe) {
1872 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvframe_chk_defrag: drop pkt\n"));
1873 goto _recv_data_drop;
1874 }
1875
1876 prframe = portctrl(padapter, prframe);
1877 if (!prframe) {
1878 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("portctrl: drop pkt\n"));
1879 ret = _FAIL;
1880 goto _recv_data_drop;
1881 }
1882
1883 count_rx_stats(padapter, prframe, NULL);
1884
1885 ret = process_recv_indicatepkts(padapter, prframe);
1886 if (ret != _SUCCESS) {
1887 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recv_func: process_recv_indicatepkts fail!\n"));
1888 rtw_free_recvframe(orig_prframe, pfree_recv_queue);
1889 goto _recv_data_drop;
1890 }
1891 return ret;
1892
1893_recv_data_drop:
1894 precvpriv->rx_drop++;
1895 return ret;
1896}
1897
1898static int recv_func(struct adapter *padapter, struct recv_frame *rframe)
1899{
1900 int ret;
1901 struct rx_pkt_attrib *prxattrib = &rframe->attrib;
1902 struct security_priv *psecuritypriv = &padapter->securitypriv;
1903 struct mlme_priv *mlmepriv = &padapter->mlmepriv;
1904
1905
1906 if (check_fwstate(mlmepriv, WIFI_STATION_STATE) && psecuritypriv->busetkipkey) {
1907 struct recv_frame *pending_frame;
1908
1909 while ((pending_frame = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue))) {
1910 if (recv_func_posthandle(padapter, pending_frame) == _SUCCESS)
1911 DBG_88E("%s: dequeue uc_swdec_pending_queue\n", __func__);
1912 }
1913 }
1914
1915 ret = recv_func_prehandle(padapter, rframe);
1916
1917 if (ret == _SUCCESS) {
1918
1919 if (check_fwstate(mlmepriv, WIFI_STATION_STATE) &&
1920 !IS_MCAST(prxattrib->ra) && prxattrib->encrypt > 0 &&
1921 prxattrib->bdecrypted == 0 &&
1922 !is_wep_enc(psecuritypriv->dot11PrivacyAlgrthm) &&
1923 !psecuritypriv->busetkipkey) {
1924 rtw_enqueue_recvframe(rframe, &padapter->recvpriv.uc_swdec_pending_queue);
1925 DBG_88E("%s: no key, enqueue uc_swdec_pending_queue\n", __func__);
1926 goto exit;
1927 }
1928
1929 ret = recv_func_posthandle(padapter, rframe);
1930 }
1931
1932exit:
1933 return ret;
1934}
1935
1936s32 rtw_recv_entry(struct recv_frame *precvframe)
1937{
1938 struct adapter *padapter;
1939 struct recv_priv *precvpriv;
1940 s32 ret = _SUCCESS;
1941
1942 padapter = precvframe->adapter;
1943
1944 precvpriv = &padapter->recvpriv;
1945
1946 ret = recv_func(padapter, precvframe);
1947 if (ret == _FAIL) {
1948 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("%s: recv_func return fail!!!\n", __func__));
1949 goto _recv_entry_drop;
1950 }
1951
1952 precvpriv->rx_pkts++;
1953
1954 return ret;
1955
1956_recv_entry_drop:
1957 return ret;
1958}
1959
1960static void rtw_signal_stat_timer_hdl(struct timer_list *t)
1961{
1962 struct adapter *adapter =
1963 from_timer(adapter, t, recvpriv.signal_stat_timer);
1964 struct recv_priv *recvpriv = &adapter->recvpriv;
1965
1966 u32 tmp_s, tmp_q;
1967 u8 avg_signal_strength = 0;
1968 u8 avg_signal_qual = 0;
1969 u8 _alpha = 3;
1970
1971 if (recvpriv->signal_strength_data.update_req == 0) {
1972
1973 avg_signal_strength = recvpriv->signal_strength_data.avg_val;
1974
1975
1976
1977 recvpriv->signal_strength_data.update_req = 1;
1978 }
1979
1980 if (recvpriv->signal_qual_data.update_req == 0) {
1981
1982 avg_signal_qual = recvpriv->signal_qual_data.avg_val;
1983
1984
1985
1986 recvpriv->signal_qual_data.update_req = 1;
1987 }
1988
1989
1990 if (check_fwstate(&adapter->mlmepriv, _FW_UNDER_SURVEY) == false) {
1991 tmp_s = avg_signal_strength +
1992 (_alpha - 1) * recvpriv->signal_strength;
1993 tmp_s = DIV_ROUND_UP(tmp_s, _alpha);
1994 if (tmp_s > 100)
1995 tmp_s = 100;
1996
1997 tmp_q = avg_signal_qual +
1998 (_alpha - 1) * recvpriv->signal_qual;
1999 tmp_q = DIV_ROUND_UP(tmp_q, _alpha);
2000 if (tmp_q > 100)
2001 tmp_q = 100;
2002
2003 recvpriv->signal_strength = tmp_s;
2004 recvpriv->rssi = (s8)translate_percentage_to_dbm(tmp_s);
2005 recvpriv->signal_qual = tmp_q;
2006 }
2007
2008 rtw_set_signal_stat_timer(recvpriv);
2009}
2010
