1 // SPDX-License-Identifier: GPL-2.0
2 /******************************************************************************
3 *
4 * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
5 *
6 ******************************************************************************/
7 #define _RTW_RECV_C_
8
9 #include <drv_types.h>
10 #include <rtw_debug.h>
11 #include <linux/jiffies.h>
12 #include <rtw_recv.h>
13 #include <net/cfg80211.h>
14 #include <asm/unaligned.h>
15
16 static u8 SNAP_ETH_TYPE_IPX[2] = {0x81, 0x37};
17 static u8 SNAP_ETH_TYPE_APPLETALK_AARP[2] = {0x80, 0xf3};
18
19 static void rtw_signal_stat_timer_hdl(struct timer_list *t);
20
_rtw_init_sta_recv_priv(struct sta_recv_priv * psta_recvpriv)21 void _rtw_init_sta_recv_priv(struct sta_recv_priv *psta_recvpriv)
22 {
23 memset((u8 *)psta_recvpriv, 0, sizeof(struct sta_recv_priv));
24
25 spin_lock_init(&psta_recvpriv->lock);
26
27 /* for (i = 0; i<MAX_RX_NUMBLKS; i++) */
28 /* _rtw_init_queue(&psta_recvpriv->blk_strms[i]); */
29
30 _rtw_init_queue(&psta_recvpriv->defrag_q);
31 }
32
_rtw_init_recv_priv(struct recv_priv * precvpriv,struct adapter * padapter)33 signed int _rtw_init_recv_priv(struct recv_priv *precvpriv, struct adapter *padapter)
34 {
35 signed int i;
36 union recv_frame *precvframe;
37 signed int res = _SUCCESS;
38
39 spin_lock_init(&precvpriv->lock);
40
41 _rtw_init_queue(&precvpriv->free_recv_queue);
42 _rtw_init_queue(&precvpriv->recv_pending_queue);
43 _rtw_init_queue(&precvpriv->uc_swdec_pending_queue);
44
45 precvpriv->adapter = padapter;
46
47 precvpriv->free_recvframe_cnt = NR_RECVFRAME;
48
49 precvpriv->pallocated_frame_buf = vzalloc(NR_RECVFRAME * sizeof(union recv_frame) + RXFRAME_ALIGN_SZ);
50
51 if (!precvpriv->pallocated_frame_buf) {
52 res = _FAIL;
53 goto exit;
54 }
55
56 precvpriv->precv_frame_buf = (u8 *)N_BYTE_ALIGMENT((SIZE_PTR)(precvpriv->pallocated_frame_buf), RXFRAME_ALIGN_SZ);
57 /* precvpriv->precv_frame_buf = precvpriv->pallocated_frame_buf + RXFRAME_ALIGN_SZ - */
58 /* ((SIZE_PTR) (precvpriv->pallocated_frame_buf) &(RXFRAME_ALIGN_SZ-1)); */
59
60 precvframe = (union recv_frame *) precvpriv->precv_frame_buf;
61
62
63 for (i = 0; i < NR_RECVFRAME; i++) {
64 INIT_LIST_HEAD(&(precvframe->u.list));
65
66 list_add_tail(&(precvframe->u.list), &(precvpriv->free_recv_queue.queue));
67
68 rtw_os_recv_resource_alloc(padapter, precvframe);
69
70 precvframe->u.hdr.len = 0;
71
72 precvframe->u.hdr.adapter = padapter;
73 precvframe++;
74
75 }
76
77 res = rtw_hal_init_recv_priv(padapter);
78
79 timer_setup(&precvpriv->signal_stat_timer, rtw_signal_stat_timer_hdl,
80 0);
81
82 precvpriv->signal_stat_sampling_interval = 2000; /* ms */
83
84 rtw_set_signal_stat_timer(precvpriv);
85
86 exit:
87 return res;
88 }
89
_rtw_free_recv_priv(struct recv_priv * precvpriv)90 void _rtw_free_recv_priv(struct recv_priv *precvpriv)
91 {
92 struct adapter *padapter = precvpriv->adapter;
93
94 rtw_free_uc_swdec_pending_queue(padapter);
95
96 rtw_os_recv_resource_free(precvpriv);
97
98 vfree(precvpriv->pallocated_frame_buf);
99
100 rtw_hal_free_recv_priv(padapter);
101 }
102
_rtw_alloc_recvframe(struct __queue * pfree_recv_queue)103 union recv_frame *_rtw_alloc_recvframe(struct __queue *pfree_recv_queue)
104 {
105
106 union recv_frame *precvframe;
107 struct list_head *plist, *phead;
108 struct adapter *padapter;
109 struct recv_priv *precvpriv;
110
111 if (list_empty(&pfree_recv_queue->queue))
112 precvframe = NULL;
113 else {
114 phead = get_list_head(pfree_recv_queue);
115
116 plist = get_next(phead);
117
118 precvframe = (union recv_frame *)plist;
119
120 list_del_init(&precvframe->u.hdr.list);
121 padapter = precvframe->u.hdr.adapter;
122 if (padapter) {
123 precvpriv = &padapter->recvpriv;
124 if (pfree_recv_queue == &precvpriv->free_recv_queue)
125 precvpriv->free_recvframe_cnt--;
126 }
127 }
128 return precvframe;
129 }
130
rtw_alloc_recvframe(struct __queue * pfree_recv_queue)131 union recv_frame *rtw_alloc_recvframe(struct __queue *pfree_recv_queue)
132 {
133 union recv_frame *precvframe;
134
135 spin_lock_bh(&pfree_recv_queue->lock);
136
137 precvframe = _rtw_alloc_recvframe(pfree_recv_queue);
138
139 spin_unlock_bh(&pfree_recv_queue->lock);
140
141 return precvframe;
142 }
143
rtw_free_recvframe(union recv_frame * precvframe,struct __queue * pfree_recv_queue)144 int rtw_free_recvframe(union recv_frame *precvframe, struct __queue *pfree_recv_queue)
145 {
146 struct adapter *padapter = precvframe->u.hdr.adapter;
147 struct recv_priv *precvpriv = &padapter->recvpriv;
148
149 rtw_os_free_recvframe(precvframe);
150
151
152 spin_lock_bh(&pfree_recv_queue->lock);
153
154 list_del_init(&(precvframe->u.hdr.list));
155
156 precvframe->u.hdr.len = 0;
157
158 list_add_tail(&(precvframe->u.hdr.list), get_list_head(pfree_recv_queue));
159
160 if (padapter) {
161 if (pfree_recv_queue == &precvpriv->free_recv_queue)
162 precvpriv->free_recvframe_cnt++;
163 }
164 spin_unlock_bh(&pfree_recv_queue->lock);
165 return _SUCCESS;
166 }
167
168
169
170
_rtw_enqueue_recvframe(union recv_frame * precvframe,struct __queue * queue)171 signed int _rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue)
172 {
173
174 struct adapter *padapter = precvframe->u.hdr.adapter;
175 struct recv_priv *precvpriv = &padapter->recvpriv;
176
177 /* INIT_LIST_HEAD(&(precvframe->u.hdr.list)); */
178 list_del_init(&(precvframe->u.hdr.list));
179
180
181 list_add_tail(&(precvframe->u.hdr.list), get_list_head(queue));
182
183 if (padapter)
184 if (queue == &precvpriv->free_recv_queue)
185 precvpriv->free_recvframe_cnt++;
186
187 return _SUCCESS;
188 }
189
rtw_enqueue_recvframe(union recv_frame * precvframe,struct __queue * queue)190 signed int rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue)
191 {
192 signed int ret;
193
194 /* _spinlock(&pfree_recv_queue->lock); */
195 spin_lock_bh(&queue->lock);
196 ret = _rtw_enqueue_recvframe(precvframe, queue);
197 /* spin_unlock(&pfree_recv_queue->lock); */
198 spin_unlock_bh(&queue->lock);
199
200 return ret;
201 }
202
203 /*
204 signed int rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue)
205 {
206 return rtw_free_recvframe(precvframe, queue);
207 }
208 */
209
210
211
212
213 /*
214 caller : defrag ; recvframe_chk_defrag in recv_thread (passive)
215 pframequeue: defrag_queue : will be accessed in recv_thread (passive)
216
217 using spinlock to protect
218
219 */
220
rtw_free_recvframe_queue(struct __queue * pframequeue,struct __queue * pfree_recv_queue)221 void rtw_free_recvframe_queue(struct __queue *pframequeue, struct __queue *pfree_recv_queue)
222 {
223 union recv_frame *precvframe;
224 struct list_head *plist, *phead;
225
226 spin_lock(&pframequeue->lock);
227
228 phead = get_list_head(pframequeue);
229 plist = get_next(phead);
230
231 while (phead != plist) {
232 precvframe = (union recv_frame *)plist;
233
234 plist = get_next(plist);
235
236 rtw_free_recvframe(precvframe, pfree_recv_queue);
237 }
238
239 spin_unlock(&pframequeue->lock);
240 }
241
rtw_free_uc_swdec_pending_queue(struct adapter * adapter)242 u32 rtw_free_uc_swdec_pending_queue(struct adapter *adapter)
243 {
244 u32 cnt = 0;
245 union recv_frame *pending_frame;
246 while ((pending_frame = rtw_alloc_recvframe(&adapter->recvpriv.uc_swdec_pending_queue))) {
247 rtw_free_recvframe(pending_frame, &adapter->recvpriv.free_recv_queue);
248 cnt++;
249 }
250
251 return cnt;
252 }
253
254
rtw_enqueue_recvbuf_to_head(struct recv_buf * precvbuf,struct __queue * queue)255 signed int rtw_enqueue_recvbuf_to_head(struct recv_buf *precvbuf, struct __queue *queue)
256 {
257 spin_lock_bh(&queue->lock);
258
259 list_del_init(&precvbuf->list);
260 list_add(&precvbuf->list, get_list_head(queue));
261
262 spin_unlock_bh(&queue->lock);
263
264 return _SUCCESS;
265 }
266
rtw_enqueue_recvbuf(struct recv_buf * precvbuf,struct __queue * queue)267 signed int rtw_enqueue_recvbuf(struct recv_buf *precvbuf, struct __queue *queue)
268 {
269 spin_lock_bh(&queue->lock);
270
271 list_del_init(&precvbuf->list);
272
273 list_add_tail(&precvbuf->list, get_list_head(queue));
274 spin_unlock_bh(&queue->lock);
275 return _SUCCESS;
276
277 }
278
rtw_dequeue_recvbuf(struct __queue * queue)279 struct recv_buf *rtw_dequeue_recvbuf(struct __queue *queue)
280 {
281 struct recv_buf *precvbuf;
282 struct list_head *plist, *phead;
283
284 spin_lock_bh(&queue->lock);
285
286 if (list_empty(&queue->queue))
287 precvbuf = NULL;
288 else {
289 phead = get_list_head(queue);
290
291 plist = get_next(phead);
292
293 precvbuf = container_of(plist, struct recv_buf, list);
294
295 list_del_init(&precvbuf->list);
296
297 }
298
299 spin_unlock_bh(&queue->lock);
300
301 return precvbuf;
302
303 }
304
recvframe_chkmic(struct adapter * adapter,union recv_frame * precvframe)305 static signed int recvframe_chkmic(struct adapter *adapter, union recv_frame *precvframe)
306 {
307
308 signed int i, res = _SUCCESS;
309 u32 datalen;
310 u8 miccode[8];
311 u8 bmic_err = false, brpt_micerror = true;
312 u8 *pframe, *payload, *pframemic;
313 u8 *mickey;
314 /* u8 *iv, rxdata_key_idx = 0; */
315 struct sta_info *stainfo;
316 struct rx_pkt_attrib *prxattrib = &precvframe->u.hdr.attrib;
317 struct security_priv *psecuritypriv = &adapter->securitypriv;
318
319 struct mlme_ext_priv *pmlmeext = &adapter->mlmeextpriv;
320 struct mlme_ext_info *pmlmeinfo = &(pmlmeext->mlmext_info);
321
322 stainfo = rtw_get_stainfo(&adapter->stapriv, &prxattrib->ta[0]);
323
324 if (prxattrib->encrypt == _TKIP_) {
325 /* calculate mic code */
326 if (stainfo) {
327 if (IS_MCAST(prxattrib->ra)) {
328 /* mickey =&psecuritypriv->dot118021XGrprxmickey.skey[0]; */
329 /* iv = precvframe->u.hdr.rx_data+prxattrib->hdrlen; */
330 /* rxdata_key_idx =(((iv[3])>>6)&0x3) ; */
331 mickey = &psecuritypriv->dot118021XGrprxmickey[prxattrib->key_index].skey[0];
332
333 /* psecuritypriv->dot118021XGrpKeyid, pmlmeinfo->key_index, rxdata_key_idx); */
334
335 if (psecuritypriv->binstallGrpkey == false) {
336 res = _FAIL;
337 goto exit;
338 }
339 } else {
340 mickey = &stainfo->dot11tkiprxmickey.skey[0];
341 }
342
343 datalen = precvframe->u.hdr.len-prxattrib->hdrlen-prxattrib->iv_len-prxattrib->icv_len-8;/* icv_len included the mic code */
344 pframe = precvframe->u.hdr.rx_data;
345 payload = pframe+prxattrib->hdrlen+prxattrib->iv_len;
346
347 rtw_seccalctkipmic(mickey, pframe, payload, datalen, &miccode[0], (unsigned char)prxattrib->priority); /* care the length of the data */
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 bmic_err = true;
356 }
357
358
359 if (bmic_err == true) {
360 /* double check key_index for some timing issue , */
361 /* cannot compare with psecuritypriv->dot118021XGrpKeyid also cause timing issue */
362 if ((IS_MCAST(prxattrib->ra) == true) && (prxattrib->key_index != pmlmeinfo->key_index))
363 brpt_micerror = false;
364
365 if (prxattrib->bdecrypted && brpt_micerror)
366 rtw_handle_tkip_mic_err(adapter, (u8)IS_MCAST(prxattrib->ra));
367
368 res = _FAIL;
369
370 } else {
371 /* mic checked ok */
372 if (!psecuritypriv->bcheck_grpkey &&
373 IS_MCAST(prxattrib->ra))
374 psecuritypriv->bcheck_grpkey = true;
375 }
376 }
377
378 recvframe_pull_tail(precvframe, 8);
379
380 }
381
382 exit:
383 return res;
384
385 }
386
387 /* decrypt and set the ivlen, icvlen of the recv_frame */
decryptor(struct adapter * padapter,union recv_frame * precv_frame)388 static union recv_frame *decryptor(struct adapter *padapter, union recv_frame *precv_frame)
389 {
390
391 struct rx_pkt_attrib *prxattrib = &precv_frame->u.hdr.attrib;
392 struct security_priv *psecuritypriv = &padapter->securitypriv;
393 union recv_frame *return_packet = precv_frame;
394 u32 res = _SUCCESS;
395
396 if (prxattrib->encrypt > 0) {
397 u8 *iv = precv_frame->u.hdr.rx_data+prxattrib->hdrlen;
398 prxattrib->key_index = (((iv[3])>>6)&0x3);
399
400 if (prxattrib->key_index > WEP_KEYS) {
401 switch (prxattrib->encrypt) {
402 case _WEP40_:
403 case _WEP104_:
404 prxattrib->key_index = psecuritypriv->dot11PrivacyKeyIndex;
405 break;
406 case _TKIP_:
407 case _AES_:
408 default:
409 prxattrib->key_index = psecuritypriv->dot118021XGrpKeyid;
410 break;
411 }
412 }
413 }
414
415 if ((prxattrib->encrypt > 0) && ((prxattrib->bdecrypted == 0) || (psecuritypriv->sw_decrypt == true))) {
416 psecuritypriv->hw_decrypted = false;
417
418 switch (prxattrib->encrypt) {
419 case _WEP40_:
420 case _WEP104_:
421 rtw_wep_decrypt(padapter, (u8 *)precv_frame);
422 break;
423 case _TKIP_:
424 res = rtw_tkip_decrypt(padapter, (u8 *)precv_frame);
425 break;
426 case _AES_:
427 res = rtw_aes_decrypt(padapter, (u8 *)precv_frame);
428 break;
429 default:
430 break;
431 }
432 } else if (prxattrib->bdecrypted == 1 && prxattrib->encrypt > 0 &&
433 (psecuritypriv->busetkipkey == 1 || prxattrib->encrypt != _TKIP_)
434 ) {
435 psecuritypriv->hw_decrypted = true;
436 } else {
437 }
438
439 if (res == _FAIL) {
440 rtw_free_recvframe(return_packet, &padapter->recvpriv.free_recv_queue);
441 return_packet = NULL;
442 } else
443 prxattrib->bdecrypted = true;
444
445 return return_packet;
446 }
447
448 /* set the security information in the recv_frame */
portctrl(struct adapter * adapter,union recv_frame * precv_frame)449 static union recv_frame *portctrl(struct adapter *adapter, union recv_frame *precv_frame)
450 {
451 u8 *psta_addr = NULL;
452 u8 *ptr;
453 uint auth_alg;
454 struct recv_frame_hdr *pfhdr;
455 struct sta_info *psta;
456 struct sta_priv *pstapriv;
457 union recv_frame *prtnframe;
458 u16 ether_type = 0;
459 u16 eapol_type = 0x888e;/* for Funia BD's WPA issue */
460 struct rx_pkt_attrib *pattrib;
461
462 pstapriv = &adapter->stapriv;
463
464 auth_alg = adapter->securitypriv.dot11AuthAlgrthm;
465
466 ptr = get_recvframe_data(precv_frame);
467 pfhdr = &precv_frame->u.hdr;
468 pattrib = &pfhdr->attrib;
469 psta_addr = pattrib->ta;
470
471 prtnframe = NULL;
472
473 psta = rtw_get_stainfo(pstapriv, psta_addr);
474
475 if (auth_alg == 2) {
476 if ((psta) && (psta->ieee8021x_blocked)) {
477 __be16 be_tmp;
478
479 /* blocked */
480 /* only accept EAPOL frame */
481
482 prtnframe = precv_frame;
483
484 /* get ether_type */
485 ptr = ptr+pfhdr->attrib.hdrlen+pfhdr->attrib.iv_len+LLC_HEADER_SIZE;
486 memcpy(&be_tmp, ptr, 2);
487 ether_type = ntohs(be_tmp);
488
489 if (ether_type == eapol_type)
490 prtnframe = precv_frame;
491 else {
492 /* free this frame */
493 rtw_free_recvframe(precv_frame, &adapter->recvpriv.free_recv_queue);
494 prtnframe = NULL;
495 }
496 } else {
497 /* allowed */
498 /* check decryption status, and decrypt the frame if needed */
499
500 prtnframe = precv_frame;
501 /* check is the EAPOL frame or not (Rekey) */
502 /* if (ether_type == eapol_type) { */
503 /* check Rekey */
504
505 /* prtnframe =precv_frame; */
506 /* */
507 /* else { */
508 /* */
509 }
510 } else
511 prtnframe = precv_frame;
512
513 return prtnframe;
514 }
515
recv_decache(union recv_frame * precv_frame,u8 bretry,struct stainfo_rxcache * prxcache)516 static signed int recv_decache(union recv_frame *precv_frame, u8 bretry, struct stainfo_rxcache *prxcache)
517 {
518 signed int tid = precv_frame->u.hdr.attrib.priority;
519
520 u16 seq_ctrl = ((precv_frame->u.hdr.attrib.seq_num&0xffff) << 4) |
521 (precv_frame->u.hdr.attrib.frag_num & 0xf);
522
523 if (tid > 15)
524 return _FAIL;
525
526 if (1) { /* if (bretry) */
527 if (seq_ctrl == prxcache->tid_rxseq[tid])
528 return _FAIL;
529 }
530
531 prxcache->tid_rxseq[tid] = seq_ctrl;
532
533 return _SUCCESS;
534
535 }
536
process_pwrbit_data(struct adapter * padapter,union recv_frame * precv_frame)537 static void process_pwrbit_data(struct adapter *padapter, union recv_frame *precv_frame)
538 {
539 unsigned char pwrbit;
540 u8 *ptr = precv_frame->u.hdr.rx_data;
541 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
542 struct sta_priv *pstapriv = &padapter->stapriv;
543 struct sta_info *psta = NULL;
544
545 psta = rtw_get_stainfo(pstapriv, pattrib->src);
546
547 pwrbit = GetPwrMgt(ptr);
548
549 if (psta) {
550 if (pwrbit) {
551 if (!(psta->state & WIFI_SLEEP_STATE)) {
552 /* psta->state |= WIFI_SLEEP_STATE; */
553 /* pstapriv->sta_dz_bitmap |= BIT(psta->aid); */
554
555 stop_sta_xmit(padapter, psta);
556
557 }
558 } else {
559 if (psta->state & WIFI_SLEEP_STATE) {
560 /* psta->state ^= WIFI_SLEEP_STATE; */
561 /* pstapriv->sta_dz_bitmap &= ~BIT(psta->aid); */
562
563 wakeup_sta_to_xmit(padapter, psta);
564 }
565 }
566
567 }
568 }
569
process_wmmps_data(struct adapter * padapter,union recv_frame * precv_frame)570 static void process_wmmps_data(struct adapter *padapter, union recv_frame *precv_frame)
571 {
572 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
573 struct sta_priv *pstapriv = &padapter->stapriv;
574 struct sta_info *psta = NULL;
575
576 psta = rtw_get_stainfo(pstapriv, pattrib->src);
577
578 if (!psta)
579 return;
580
581 if (!psta->qos_option)
582 return;
583
584 if (!(psta->qos_info&0xf))
585 return;
586
587 if (psta->state&WIFI_SLEEP_STATE) {
588 u8 wmmps_ac = 0;
589
590 switch (pattrib->priority) {
591 case 1:
592 case 2:
593 wmmps_ac = psta->uapsd_bk&BIT(1);
594 break;
595 case 4:
596 case 5:
597 wmmps_ac = psta->uapsd_vi&BIT(1);
598 break;
599 case 6:
600 case 7:
601 wmmps_ac = psta->uapsd_vo&BIT(1);
602 break;
603 case 0:
604 case 3:
605 default:
606 wmmps_ac = psta->uapsd_be&BIT(1);
607 break;
608 }
609
610 if (wmmps_ac) {
611 if (psta->sleepq_ac_len > 0)
612 /* process received triggered frame */
613 xmit_delivery_enabled_frames(padapter, psta);
614 else
615 /* issue one qos null frame with More data bit = 0 and the EOSP bit set (= 1) */
616 issue_qos_nulldata(padapter, psta->hwaddr, (u16)pattrib->priority, 0, 0);
617 }
618 }
619 }
620
count_rx_stats(struct adapter * padapter,union recv_frame * prframe,struct sta_info * sta)621 static void count_rx_stats(struct adapter *padapter, union recv_frame *prframe, struct sta_info *sta)
622 {
623 int sz;
624 struct sta_info *psta = NULL;
625 struct stainfo_stats *pstats = NULL;
626 struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib;
627 struct recv_priv *precvpriv = &padapter->recvpriv;
628
629 sz = get_recvframe_len(prframe);
630 precvpriv->rx_bytes += sz;
631
632 padapter->mlmepriv.LinkDetectInfo.NumRxOkInPeriod++;
633
634 if ((!MacAddr_isBcst(pattrib->dst)) && (!IS_MCAST(pattrib->dst)))
635 padapter->mlmepriv.LinkDetectInfo.NumRxUnicastOkInPeriod++;
636
637 if (sta)
638 psta = sta;
639 else
640 psta = prframe->u.hdr.psta;
641
642 if (psta) {
643 pstats = &psta->sta_stats;
644
645 pstats->rx_data_pkts++;
646 pstats->rx_bytes += sz;
647 }
648
649 traffic_check_for_leave_lps(padapter, false, 0);
650 }
651
sta2sta_data_frame(struct adapter * adapter,union recv_frame * precv_frame,struct sta_info ** psta)652 static signed int sta2sta_data_frame(struct adapter *adapter, union recv_frame *precv_frame,
653 struct sta_info **psta)
654 {
655 u8 *ptr = precv_frame->u.hdr.rx_data;
656 signed int ret = _SUCCESS;
657 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
658 struct sta_priv *pstapriv = &adapter->stapriv;
659 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
660 u8 *mybssid = get_bssid(pmlmepriv);
661 u8 *myhwaddr = myid(&adapter->eeprompriv);
662 u8 *sta_addr = NULL;
663 signed int bmcast = IS_MCAST(pattrib->dst);
664
665 if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true) ||
666 (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) == true)) {
667
668 /* filter packets that SA is myself or multicast or broadcast */
669 if (!memcmp(myhwaddr, pattrib->src, ETH_ALEN)) {
670 ret = _FAIL;
671 goto exit;
672 }
673
674 if ((memcmp(myhwaddr, pattrib->dst, ETH_ALEN)) && (!bmcast)) {
675 ret = _FAIL;
676 goto exit;
677 }
678
679 if (!memcmp(pattrib->bssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
680 !memcmp(mybssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
681 (memcmp(pattrib->bssid, mybssid, ETH_ALEN))) {
682 ret = _FAIL;
683 goto exit;
684 }
685
686 sta_addr = pattrib->src;
687
688 } else if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true) {
689 /* For Station mode, sa and bssid should always be BSSID, and DA is my mac-address */
690 if (memcmp(pattrib->bssid, pattrib->src, ETH_ALEN)) {
691 ret = _FAIL;
692 goto exit;
693 }
694
695 sta_addr = pattrib->bssid;
696 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
697 if (bmcast) {
698 /* For AP mode, if DA == MCAST, then BSSID should be also MCAST */
699 if (!IS_MCAST(pattrib->bssid)) {
700 ret = _FAIL;
701 goto exit;
702 }
703 } else { /* not mc-frame */
704 /* For AP mode, if DA is non-MCAST, then it must be BSSID, and bssid == BSSID */
705 if (memcmp(pattrib->bssid, pattrib->dst, ETH_ALEN)) {
706 ret = _FAIL;
707 goto exit;
708 }
709
710 sta_addr = pattrib->src;
711 }
712
713 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
714 memcpy(pattrib->dst, GetAddr1Ptr(ptr), ETH_ALEN);
715 memcpy(pattrib->src, GetAddr2Ptr(ptr), ETH_ALEN);
716 memcpy(pattrib->bssid, GetAddr3Ptr(ptr), ETH_ALEN);
717 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
718 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
719
720 sta_addr = mybssid;
721 } else
722 ret = _FAIL;
723
724
725
726 if (bmcast)
727 *psta = rtw_get_bcmc_stainfo(adapter);
728 else
729 *psta = rtw_get_stainfo(pstapriv, sta_addr); /* get ap_info */
730
731 if (!*psta) {
732 ret = _FAIL;
733 goto exit;
734 }
735
736 exit:
737 return ret;
738 }
739
ap2sta_data_frame(struct adapter * adapter,union recv_frame * precv_frame,struct sta_info ** psta)740 static signed int ap2sta_data_frame(struct adapter *adapter, union recv_frame *precv_frame,
741 struct sta_info **psta)
742 {
743 u8 *ptr = precv_frame->u.hdr.rx_data;
744 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
745 signed int ret = _SUCCESS;
746 struct sta_priv *pstapriv = &adapter->stapriv;
747 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
748 u8 *mybssid = get_bssid(pmlmepriv);
749 u8 *myhwaddr = myid(&adapter->eeprompriv);
750 signed int bmcast = IS_MCAST(pattrib->dst);
751
752 if ((check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true) &&
753 (check_fwstate(pmlmepriv, _FW_LINKED) == true ||
754 check_fwstate(pmlmepriv, _FW_UNDER_LINKING) == true)
755 ) {
756
757 /* filter packets that SA is myself or multicast or broadcast */
758 if (!memcmp(myhwaddr, pattrib->src, ETH_ALEN)) {
759 ret = _FAIL;
760 goto exit;
761 }
762
763 /* da should be for me */
764 if ((memcmp(myhwaddr, pattrib->dst, ETH_ALEN)) && (!bmcast)) {
765 ret = _FAIL;
766 goto exit;
767 }
768
769
770 /* check BSSID */
771 if (!memcmp(pattrib->bssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
772 !memcmp(mybssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
773 (memcmp(pattrib->bssid, mybssid, ETH_ALEN))) {
774
775 if (!bmcast)
776 issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
777
778 ret = _FAIL;
779 goto exit;
780 }
781
782 if (bmcast)
783 *psta = rtw_get_bcmc_stainfo(adapter);
784 else
785 *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get ap_info */
786
787 if (!*psta) {
788 ret = _FAIL;
789 goto exit;
790 }
791
792 if (GetFrameSubType(ptr) & BIT(6)) {
793 /* No data, will not indicate to upper layer, temporily count it here */
794 count_rx_stats(adapter, precv_frame, *psta);
795 ret = RTW_RX_HANDLED;
796 goto exit;
797 }
798
799 } else if ((check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) &&
800 (check_fwstate(pmlmepriv, _FW_LINKED) == true)) {
801 memcpy(pattrib->dst, GetAddr1Ptr(ptr), ETH_ALEN);
802 memcpy(pattrib->src, GetAddr2Ptr(ptr), ETH_ALEN);
803 memcpy(pattrib->bssid, GetAddr3Ptr(ptr), ETH_ALEN);
804 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
805 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
806
807 /* */
808 memcpy(pattrib->bssid, mybssid, ETH_ALEN);
809
810
811 *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get sta_info */
812 if (!*psta) {
813 ret = _FAIL;
814 goto exit;
815 }
816
817
818 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
819 /* Special case */
820 ret = RTW_RX_HANDLED;
821 goto exit;
822 } else {
823 if (!memcmp(myhwaddr, pattrib->dst, ETH_ALEN) && (!bmcast)) {
824 *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get sta_info */
825 if (!*psta) {
826
827 /* for AP multicast issue , modify by yiwei */
828 static unsigned long send_issue_deauth_time;
829
830 if (jiffies_to_msecs(jiffies - send_issue_deauth_time) > 10000 || send_issue_deauth_time == 0) {
831 send_issue_deauth_time = jiffies;
832
833 issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
834 }
835 }
836 }
837
838 ret = _FAIL;
839 }
840
841 exit:
842 return ret;
843 }
844
sta2ap_data_frame(struct adapter * adapter,union recv_frame * precv_frame,struct sta_info ** psta)845 static signed int sta2ap_data_frame(struct adapter *adapter, union recv_frame *precv_frame,
846 struct sta_info **psta)
847 {
848 u8 *ptr = precv_frame->u.hdr.rx_data;
849 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
850 struct sta_priv *pstapriv = &adapter->stapriv;
851 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
852 unsigned char *mybssid = get_bssid(pmlmepriv);
853 signed int ret = _SUCCESS;
854
855 if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
856 /* For AP mode, RA =BSSID, TX =STA(SRC_ADDR), A3 =DST_ADDR */
857 if (memcmp(pattrib->bssid, mybssid, ETH_ALEN)) {
858 ret = _FAIL;
859 goto exit;
860 }
861
862 *psta = rtw_get_stainfo(pstapriv, pattrib->src);
863 if (!*psta) {
864 issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
865
866 ret = RTW_RX_HANDLED;
867 goto exit;
868 }
869
870 process_pwrbit_data(adapter, precv_frame);
871
872 if ((GetFrameSubType(ptr) & WIFI_QOS_DATA_TYPE) == WIFI_QOS_DATA_TYPE)
873 process_wmmps_data(adapter, precv_frame);
874
875 if (GetFrameSubType(ptr) & BIT(6)) {
876 /* No data, will not indicate to upper layer, temporily count it here */
877 count_rx_stats(adapter, precv_frame, *psta);
878 ret = RTW_RX_HANDLED;
879 goto exit;
880 }
881 } else {
882 u8 *myhwaddr = myid(&adapter->eeprompriv);
883 if (memcmp(pattrib->ra, myhwaddr, ETH_ALEN)) {
884 ret = RTW_RX_HANDLED;
885 goto exit;
886 }
887 issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
888 ret = RTW_RX_HANDLED;
889 goto exit;
890 }
891
892 exit:
893 return ret;
894 }
895
validate_recv_ctrl_frame(struct adapter * padapter,union recv_frame * precv_frame)896 static signed int validate_recv_ctrl_frame(struct adapter *padapter, union recv_frame *precv_frame)
897 {
898 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
899 struct sta_priv *pstapriv = &padapter->stapriv;
900 u8 *pframe = precv_frame->u.hdr.rx_data;
901 struct sta_info *psta = NULL;
902 /* uint len = precv_frame->u.hdr.len; */
903
904 if (GetFrameType(pframe) != WIFI_CTRL_TYPE)
905 return _FAIL;
906
907 /* receive the frames that ra(a1) is my address */
908 if (memcmp(GetAddr1Ptr(pframe), myid(&padapter->eeprompriv), ETH_ALEN))
909 return _FAIL;
910
911 psta = rtw_get_stainfo(pstapriv, GetAddr2Ptr(pframe));
912 if (!psta)
913 return _FAIL;
914
915 /* for rx pkt statistics */
916 psta->sta_stats.rx_ctrl_pkts++;
917
918 /* only handle ps-poll */
919 if (GetFrameSubType(pframe) == WIFI_PSPOLL) {
920 u16 aid;
921 u8 wmmps_ac = 0;
922
923 aid = GetAid(pframe);
924 if (psta->aid != aid)
925 return _FAIL;
926
927 switch (pattrib->priority) {
928 case 1:
929 case 2:
930 wmmps_ac = psta->uapsd_bk&BIT(0);
931 break;
932 case 4:
933 case 5:
934 wmmps_ac = psta->uapsd_vi&BIT(0);
935 break;
936 case 6:
937 case 7:
938 wmmps_ac = psta->uapsd_vo&BIT(0);
939 break;
940 case 0:
941 case 3:
942 default:
943 wmmps_ac = psta->uapsd_be&BIT(0);
944 break;
945 }
946
947 if (wmmps_ac)
948 return _FAIL;
949
950 if (psta->state & WIFI_STA_ALIVE_CHK_STATE) {
951 psta->expire_to = pstapriv->expire_to;
952 psta->state ^= WIFI_STA_ALIVE_CHK_STATE;
953 }
954
955 if ((psta->state&WIFI_SLEEP_STATE) && (pstapriv->sta_dz_bitmap&BIT(psta->aid))) {
956 struct list_head *xmitframe_plist, *xmitframe_phead;
957 struct xmit_frame *pxmitframe = NULL;
958 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
959
960 /* spin_lock_bh(&psta->sleep_q.lock); */
961 spin_lock_bh(&pxmitpriv->lock);
962
963 xmitframe_phead = get_list_head(&psta->sleep_q);
964 xmitframe_plist = get_next(xmitframe_phead);
965
966 if (xmitframe_phead != xmitframe_plist) {
967 pxmitframe = container_of(xmitframe_plist, struct xmit_frame, list);
968
969 xmitframe_plist = get_next(xmitframe_plist);
970
971 list_del_init(&pxmitframe->list);
972
973 psta->sleepq_len--;
974
975 if (psta->sleepq_len > 0)
976 pxmitframe->attrib.mdata = 1;
977 else
978 pxmitframe->attrib.mdata = 0;
979
980 pxmitframe->attrib.triggered = 1;
981
982 rtw_hal_xmitframe_enqueue(padapter, pxmitframe);
983
984 if (psta->sleepq_len == 0) {
985 pstapriv->tim_bitmap &= ~BIT(psta->aid);
986
987 /* update BCN for TIM IE */
988 /* update_BCNTIM(padapter); */
989 update_beacon(padapter, WLAN_EID_TIM, NULL, true);
990 }
991
992 /* spin_unlock_bh(&psta->sleep_q.lock); */
993 spin_unlock_bh(&pxmitpriv->lock);
994
995 } else {
996 /* spin_unlock_bh(&psta->sleep_q.lock); */
997 spin_unlock_bh(&pxmitpriv->lock);
998
999 if (pstapriv->tim_bitmap&BIT(psta->aid)) {
1000 if (psta->sleepq_len == 0) {
1001 /* issue nulldata with More data bit = 0 to indicate we have no buffered packets */
1002 issue_nulldata_in_interrupt(padapter, psta->hwaddr);
1003 } else {
1004 psta->sleepq_len = 0;
1005 }
1006
1007 pstapriv->tim_bitmap &= ~BIT(psta->aid);
1008
1009 /* update BCN for TIM IE */
1010 /* update_BCNTIM(padapter); */
1011 update_beacon(padapter, WLAN_EID_TIM, NULL, true);
1012 }
1013 }
1014 }
1015 }
1016
1017 return _FAIL;
1018
1019 }
1020
1021 /* perform defrag */
recvframe_defrag(struct adapter * adapter,struct __queue * defrag_q)1022 static union recv_frame *recvframe_defrag(struct adapter *adapter,
1023 struct __queue *defrag_q)
1024 {
1025 struct list_head *plist, *phead;
1026 u8 wlanhdr_offset;
1027 u8 curfragnum;
1028 struct recv_frame_hdr *pfhdr, *pnfhdr;
1029 union recv_frame *prframe, *pnextrframe;
1030 struct __queue *pfree_recv_queue;
1031
1032 curfragnum = 0;
1033 pfree_recv_queue = &adapter->recvpriv.free_recv_queue;
1034
1035 phead = get_list_head(defrag_q);
1036 plist = get_next(phead);
1037 prframe = (union recv_frame *)plist;
1038 pfhdr = &prframe->u.hdr;
1039 list_del_init(&(prframe->u.list));
1040
1041 if (curfragnum != pfhdr->attrib.frag_num) {
1042 /* the first fragment number must be 0 */
1043 /* free the whole queue */
1044 rtw_free_recvframe(prframe, pfree_recv_queue);
1045 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
1046
1047 return NULL;
1048 }
1049
1050 curfragnum++;
1051
1052 plist = get_list_head(defrag_q);
1053
1054 plist = get_next(plist);
1055
1056 while (phead != plist) {
1057 pnextrframe = (union recv_frame *)plist;
1058 pnfhdr = &pnextrframe->u.hdr;
1059
1060
1061 /* check the fragment sequence (2nd ~n fragment frame) */
1062
1063 if (curfragnum != pnfhdr->attrib.frag_num) {
1064 /* the fragment number must be increasing (after decache) */
1065 /* release the defrag_q & prframe */
1066 rtw_free_recvframe(prframe, pfree_recv_queue);
1067 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
1068 return NULL;
1069 }
1070
1071 curfragnum++;
1072
1073 /* copy the 2nd~n fragment frame's payload to the first fragment */
1074 /* get the 2nd~last fragment frame's payload */
1075
1076 wlanhdr_offset = pnfhdr->attrib.hdrlen + pnfhdr->attrib.iv_len;
1077
1078 recvframe_pull(pnextrframe, wlanhdr_offset);
1079
1080 /* append to first fragment frame's tail (if privacy frame, pull the ICV) */
1081 recvframe_pull_tail(prframe, pfhdr->attrib.icv_len);
1082
1083 /* memcpy */
1084 memcpy(pfhdr->rx_tail, pnfhdr->rx_data, pnfhdr->len);
1085
1086 recvframe_put(prframe, pnfhdr->len);
1087
1088 pfhdr->attrib.icv_len = pnfhdr->attrib.icv_len;
1089 plist = get_next(plist);
1090
1091 }
1092
1093 /* free the defrag_q queue and return the prframe */
1094 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
1095
1096 return prframe;
1097 }
1098
1099 /* check if need to defrag, if needed queue the frame to defrag_q */
recvframe_chk_defrag(struct adapter * padapter,union recv_frame * precv_frame)1100 static union recv_frame *recvframe_chk_defrag(struct adapter *padapter, union recv_frame *precv_frame)
1101 {
1102 u8 ismfrag;
1103 u8 fragnum;
1104 u8 *psta_addr;
1105 struct recv_frame_hdr *pfhdr;
1106 struct sta_info *psta;
1107 struct sta_priv *pstapriv;
1108 struct list_head *phead;
1109 union recv_frame *prtnframe = NULL;
1110 struct __queue *pfree_recv_queue, *pdefrag_q;
1111
1112 pstapriv = &padapter->stapriv;
1113
1114 pfhdr = &precv_frame->u.hdr;
1115
1116 pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
1117
1118 /* need to define struct of wlan header frame ctrl */
1119 ismfrag = pfhdr->attrib.mfrag;
1120 fragnum = pfhdr->attrib.frag_num;
1121
1122 psta_addr = pfhdr->attrib.ta;
1123 psta = rtw_get_stainfo(pstapriv, psta_addr);
1124 if (!psta) {
1125 u8 type = GetFrameType(pfhdr->rx_data);
1126 if (type != WIFI_DATA_TYPE) {
1127 psta = rtw_get_bcmc_stainfo(padapter);
1128 pdefrag_q = &psta->sta_recvpriv.defrag_q;
1129 } else
1130 pdefrag_q = NULL;
1131 } else
1132 pdefrag_q = &psta->sta_recvpriv.defrag_q;
1133
1134 if ((ismfrag == 0) && (fragnum == 0))
1135 prtnframe = precv_frame;/* isn't a fragment frame */
1136
1137 if (ismfrag == 1) {
1138 /* 0~(n-1) fragment frame */
1139 /* enqueue to defraf_g */
1140 if (pdefrag_q) {
1141 if (fragnum == 0)
1142 /* the first fragment */
1143 if (!list_empty(&pdefrag_q->queue))
1144 /* free current defrag_q */
1145 rtw_free_recvframe_queue(pdefrag_q, pfree_recv_queue);
1146
1147
1148 /* Then enqueue the 0~(n-1) fragment into the defrag_q */
1149
1150 /* spin_lock(&pdefrag_q->lock); */
1151 phead = get_list_head(pdefrag_q);
1152 list_add_tail(&pfhdr->list, phead);
1153 /* spin_unlock(&pdefrag_q->lock); */
1154
1155 prtnframe = NULL;
1156
1157 } else {
1158 /* can't find this ta's defrag_queue, so free this recv_frame */
1159 rtw_free_recvframe(precv_frame, pfree_recv_queue);
1160 prtnframe = NULL;
1161 }
1162
1163 }
1164
1165 if ((ismfrag == 0) && (fragnum != 0)) {
1166 /* the last fragment frame */
1167 /* enqueue the last fragment */
1168 if (pdefrag_q) {
1169 /* spin_lock(&pdefrag_q->lock); */
1170 phead = get_list_head(pdefrag_q);
1171 list_add_tail(&pfhdr->list, phead);
1172 /* spin_unlock(&pdefrag_q->lock); */
1173
1174 /* call recvframe_defrag to defrag */
1175 precv_frame = recvframe_defrag(padapter, pdefrag_q);
1176 prtnframe = precv_frame;
1177
1178 } else {
1179 /* can't find this ta's defrag_queue, so free this recv_frame */
1180 rtw_free_recvframe(precv_frame, pfree_recv_queue);
1181 prtnframe = NULL;
1182 }
1183
1184 }
1185
1186
1187 if ((prtnframe) && (prtnframe->u.hdr.attrib.privacy)) {
1188 /* after defrag we must check tkip mic code */
1189 if (recvframe_chkmic(padapter, prtnframe) == _FAIL) {
1190 rtw_free_recvframe(prtnframe, pfree_recv_queue);
1191 prtnframe = NULL;
1192 }
1193 }
1194 return prtnframe;
1195 }
1196
validate_recv_mgnt_frame(struct adapter * padapter,union recv_frame * precv_frame)1197 static signed int validate_recv_mgnt_frame(struct adapter *padapter, union recv_frame *precv_frame)
1198 {
1199 /* struct mlme_priv *pmlmepriv = &adapter->mlmepriv; */
1200
1201 precv_frame = recvframe_chk_defrag(padapter, precv_frame);
1202 if (!precv_frame)
1203 return _SUCCESS;
1204
1205 {
1206 /* for rx pkt statistics */
1207 struct sta_info *psta = rtw_get_stainfo(&padapter->stapriv, GetAddr2Ptr(precv_frame->u.hdr.rx_data));
1208 if (psta) {
1209 psta->sta_stats.rx_mgnt_pkts++;
1210 if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_BEACON)
1211 psta->sta_stats.rx_beacon_pkts++;
1212 else if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_PROBEREQ)
1213 psta->sta_stats.rx_probereq_pkts++;
1214 else if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_PROBERSP) {
1215 if (!memcmp(padapter->eeprompriv.mac_addr, GetAddr1Ptr(precv_frame->u.hdr.rx_data), ETH_ALEN))
1216 psta->sta_stats.rx_probersp_pkts++;
1217 else if (is_broadcast_mac_addr(GetAddr1Ptr(precv_frame->u.hdr.rx_data)) ||
1218 is_multicast_mac_addr(GetAddr1Ptr(precv_frame->u.hdr.rx_data)))
1219 psta->sta_stats.rx_probersp_bm_pkts++;
1220 else
1221 psta->sta_stats.rx_probersp_uo_pkts++;
1222 }
1223 }
1224 }
1225
1226 mgt_dispatcher(padapter, precv_frame);
1227
1228 return _SUCCESS;
1229
1230 }
1231
validate_recv_data_frame(struct adapter * adapter,union recv_frame * precv_frame)1232 static signed int validate_recv_data_frame(struct adapter *adapter, union recv_frame *precv_frame)
1233 {
1234 u8 bretry;
1235 u8 *psa, *pda, *pbssid;
1236 struct sta_info *psta = NULL;
1237 u8 *ptr = precv_frame->u.hdr.rx_data;
1238 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
1239 struct security_priv *psecuritypriv = &adapter->securitypriv;
1240 signed int ret = _SUCCESS;
1241
1242 bretry = GetRetry(ptr);
1243 pda = get_da(ptr);
1244 psa = get_sa(ptr);
1245 pbssid = get_hdr_bssid(ptr);
1246
1247 if (!pbssid) {
1248 ret = _FAIL;
1249 goto exit;
1250 }
1251
1252 memcpy(pattrib->dst, pda, ETH_ALEN);
1253 memcpy(pattrib->src, psa, ETH_ALEN);
1254
1255 memcpy(pattrib->bssid, pbssid, ETH_ALEN);
1256
1257 switch (pattrib->to_fr_ds) {
1258 case 0:
1259 memcpy(pattrib->ra, pda, ETH_ALEN);
1260 memcpy(pattrib->ta, psa, ETH_ALEN);
1261 ret = sta2sta_data_frame(adapter, precv_frame, &psta);
1262 break;
1263
1264 case 1:
1265 memcpy(pattrib->ra, pda, ETH_ALEN);
1266 memcpy(pattrib->ta, pbssid, ETH_ALEN);
1267 ret = ap2sta_data_frame(adapter, precv_frame, &psta);
1268 break;
1269
1270 case 2:
1271 memcpy(pattrib->ra, pbssid, ETH_ALEN);
1272 memcpy(pattrib->ta, psa, ETH_ALEN);
1273 ret = sta2ap_data_frame(adapter, precv_frame, &psta);
1274 break;
1275
1276 case 3:
1277 memcpy(pattrib->ra, GetAddr1Ptr(ptr), ETH_ALEN);
1278 memcpy(pattrib->ta, GetAddr2Ptr(ptr), ETH_ALEN);
1279 ret = _FAIL;
1280 break;
1281
1282 default:
1283 ret = _FAIL;
1284 break;
1285
1286 }
1287
1288 if (ret == _FAIL) {
1289 goto exit;
1290 } else if (ret == RTW_RX_HANDLED) {
1291 goto exit;
1292 }
1293
1294
1295 if (!psta) {
1296 ret = _FAIL;
1297 goto exit;
1298 }
1299
1300 /* psta->rssi = prxcmd->rssi; */
1301 /* psta->signal_quality = prxcmd->sq; */
1302 precv_frame->u.hdr.psta = psta;
1303
1304
1305 pattrib->amsdu = 0;
1306 pattrib->ack_policy = 0;
1307 /* parsing QC field */
1308 if (pattrib->qos == 1) {
1309 pattrib->priority = GetPriority((ptr + 24));
1310 pattrib->ack_policy = GetAckpolicy((ptr + 24));
1311 pattrib->amsdu = GetAMsdu((ptr + 24));
1312 pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 32 : 26;
1313
1314 if (pattrib->priority != 0 && pattrib->priority != 3)
1315 adapter->recvpriv.bIsAnyNonBEPkts = true;
1316
1317 } else {
1318 pattrib->priority = 0;
1319 pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 30 : 24;
1320 }
1321
1322
1323 if (pattrib->order)/* HT-CTRL 11n */
1324 pattrib->hdrlen += 4;
1325
1326 precv_frame->u.hdr.preorder_ctrl = &psta->recvreorder_ctrl[pattrib->priority];
1327
1328 /* decache, drop duplicate recv packets */
1329 if (recv_decache(precv_frame, bretry, &psta->sta_recvpriv.rxcache) == _FAIL) {
1330 ret = _FAIL;
1331 goto exit;
1332 }
1333
1334 if (pattrib->privacy) {
1335 GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, IS_MCAST(pattrib->ra));
1336
1337 SET_ICE_IV_LEN(pattrib->iv_len, pattrib->icv_len, pattrib->encrypt);
1338 } else {
1339 pattrib->encrypt = 0;
1340 pattrib->iv_len = pattrib->icv_len = 0;
1341 }
1342
1343 exit:
1344 return ret;
1345 }
1346
validate_80211w_mgmt(struct adapter * adapter,union recv_frame * precv_frame)1347 static signed int validate_80211w_mgmt(struct adapter *adapter, union recv_frame *precv_frame)
1348 {
1349 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
1350 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
1351 u8 *ptr = precv_frame->u.hdr.rx_data;
1352 u8 subtype;
1353
1354 subtype = GetFrameSubType(ptr); /* bit(7)~bit(2) */
1355
1356 /* only support station mode */
1357 if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) && check_fwstate(pmlmepriv, _FW_LINKED) &&
1358 adapter->securitypriv.binstallBIPkey == true) {
1359 /* unicast management frame decrypt */
1360 if (pattrib->privacy && !(IS_MCAST(GetAddr1Ptr(ptr))) &&
1361 (subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC || subtype == WIFI_ACTION)) {
1362 u8 *mgmt_DATA;
1363 u32 data_len = 0;
1364
1365 pattrib->bdecrypted = 0;
1366 pattrib->encrypt = _AES_;
1367 pattrib->hdrlen = sizeof(struct ieee80211_hdr_3addr);
1368 /* set iv and icv length */
1369 SET_ICE_IV_LEN(pattrib->iv_len, pattrib->icv_len, pattrib->encrypt);
1370 memcpy(pattrib->ra, GetAddr1Ptr(ptr), ETH_ALEN);
1371 memcpy(pattrib->ta, GetAddr2Ptr(ptr), ETH_ALEN);
1372 /* actual management data frame body */
1373 data_len = pattrib->pkt_len - pattrib->hdrlen - pattrib->iv_len - pattrib->icv_len;
1374 mgmt_DATA = rtw_zmalloc(data_len);
1375 if (!mgmt_DATA) {
1376 goto validate_80211w_fail;
1377 }
1378 precv_frame = decryptor(adapter, precv_frame);
1379 /* save actual management data frame body */
1380 memcpy(mgmt_DATA, ptr+pattrib->hdrlen+pattrib->iv_len, data_len);
1381 /* overwrite the iv field */
1382 memcpy(ptr+pattrib->hdrlen, mgmt_DATA, data_len);
1383 /* remove the iv and icv length */
1384 pattrib->pkt_len = pattrib->pkt_len - pattrib->iv_len - pattrib->icv_len;
1385 kfree(mgmt_DATA);
1386 if (!precv_frame) {
1387 goto validate_80211w_fail;
1388 }
1389 } else if (IS_MCAST(GetAddr1Ptr(ptr)) &&
1390 (subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC)) {
1391 signed int BIP_ret = _SUCCESS;
1392 /* verify BIP MME IE of broadcast/multicast de-auth/disassoc packet */
1393 BIP_ret = rtw_BIP_verify(adapter, (u8 *)precv_frame);
1394 if (BIP_ret == _FAIL) {
1395 goto validate_80211w_fail;
1396 } else if (BIP_ret == RTW_RX_HANDLED) {
1397 /* issue sa query request */
1398 issue_action_SA_Query(adapter, NULL, 0, 0);
1399 goto validate_80211w_fail;
1400 }
1401 } else { /* 802.11w protect */
1402 if (subtype == WIFI_ACTION) {
1403 /* according 802.11-2012 standard, these five types are not robust types */
1404 if (ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_PUBLIC &&
1405 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_HT &&
1406 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_UNPROTECTED_WNM &&
1407 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_SELF_PROTECTED &&
1408 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_P2P) {
1409 goto validate_80211w_fail;
1410 }
1411 } else if (subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC) {
1412 /* issue sa query request */
1413 issue_action_SA_Query(adapter, NULL, 0, 0);
1414 goto validate_80211w_fail;
1415 }
1416 }
1417 }
1418 return _SUCCESS;
1419
1420 validate_80211w_fail:
1421 return _FAIL;
1422
1423 }
1424
validate_recv_frame(struct adapter * adapter,union recv_frame * precv_frame)1425 static signed int validate_recv_frame(struct adapter *adapter, union recv_frame *precv_frame)
1426 {
1427 /* shall check frame subtype, to / from ds, da, bssid */
1428
1429 /* then call check if rx seq/frag. duplicated. */
1430
1431 u8 type;
1432 u8 subtype;
1433 signed int retval = _SUCCESS;
1434 u8 bDumpRxPkt;
1435
1436 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
1437
1438 u8 *ptr = precv_frame->u.hdr.rx_data;
1439 u8 ver = (unsigned char) (*ptr)&0x3;
1440
1441 /* add version chk */
1442 if (ver != 0) {
1443 retval = _FAIL;
1444 goto exit;
1445 }
1446
1447 type = GetFrameType(ptr);
1448 subtype = GetFrameSubType(ptr); /* bit(7)~bit(2) */
1449
1450 pattrib->to_fr_ds = get_tofr_ds(ptr);
1451
1452 pattrib->frag_num = GetFragNum(ptr);
1453 pattrib->seq_num = GetSequence(ptr);
1454
1455 pattrib->pw_save = GetPwrMgt(ptr);
1456 pattrib->mfrag = GetMFrag(ptr);
1457 pattrib->mdata = GetMData(ptr);
1458 pattrib->privacy = GetPrivacy(ptr);
1459 pattrib->order = GetOrder(ptr);
1460 rtw_hal_get_def_var(adapter, HAL_DEF_DBG_DUMP_RXPKT, &(bDumpRxPkt));
1461
1462 switch (type) {
1463 case WIFI_MGT_TYPE: /* mgnt */
1464 if (validate_80211w_mgmt(adapter, precv_frame) == _FAIL) {
1465 retval = _FAIL;
1466 break;
1467 }
1468
1469 retval = validate_recv_mgnt_frame(adapter, precv_frame);
1470 retval = _FAIL; /* only data frame return _SUCCESS */
1471 break;
1472 case WIFI_CTRL_TYPE: /* ctrl */
1473 retval = validate_recv_ctrl_frame(adapter, precv_frame);
1474 retval = _FAIL; /* only data frame return _SUCCESS */
1475 break;
1476 case WIFI_DATA_TYPE: /* data */
1477 pattrib->qos = (subtype & BIT(7)) ? 1:0;
1478 retval = validate_recv_data_frame(adapter, precv_frame);
1479 if (retval == _FAIL) {
1480 struct recv_priv *precvpriv = &adapter->recvpriv;
1481 precvpriv->rx_drop++;
1482 } else if (retval == _SUCCESS) {
1483 #ifdef DBG_RX_DUMP_EAP
1484 u8 bDumpRxPkt;
1485 u16 eth_type;
1486
1487 /* dump eapol */
1488 rtw_hal_get_def_var(adapter, HAL_DEF_DBG_DUMP_RXPKT, &(bDumpRxPkt));
1489 /* get ether_type */
1490 memcpy(ð_type, ptr + pattrib->hdrlen + pattrib->iv_len + LLC_HEADER_SIZE, 2);
1491 eth_type = ntohs((unsigned short) eth_type);
1492 #endif
1493 }
1494 break;
1495 default:
1496 retval = _FAIL;
1497 break;
1498 }
1499
1500 exit:
1501 return retval;
1502 }
1503
1504 /* remove the wlanhdr and add the eth_hdr */
wlanhdr_to_ethhdr(union recv_frame * precvframe)1505 static signed int wlanhdr_to_ethhdr(union recv_frame *precvframe)
1506 {
1507 signed int rmv_len;
1508 u16 eth_type, len;
1509 u8 bsnaphdr;
1510 u8 *psnap_type;
1511 struct ieee80211_snap_hdr *psnap;
1512 __be16 be_tmp;
1513 struct adapter *adapter = precvframe->u.hdr.adapter;
1514 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
1515 u8 *ptr = get_recvframe_data(precvframe) ; /* point to frame_ctrl field */
1516 struct rx_pkt_attrib *pattrib = &precvframe->u.hdr.attrib;
1517
1518 if (pattrib->encrypt)
1519 recvframe_pull_tail(precvframe, pattrib->icv_len);
1520
1521 psnap = (struct ieee80211_snap_hdr *)(ptr+pattrib->hdrlen + pattrib->iv_len);
1522 psnap_type = ptr+pattrib->hdrlen + pattrib->iv_len+SNAP_SIZE;
1523 /* convert hdr + possible LLC headers into Ethernet header */
1524 /* eth_type = (psnap_type[0] << 8) | psnap_type[1]; */
1525 if ((!memcmp(psnap, rfc1042_header, SNAP_SIZE) &&
1526 (memcmp(psnap_type, SNAP_ETH_TYPE_IPX, 2)) &&
1527 (memcmp(psnap_type, SNAP_ETH_TYPE_APPLETALK_AARP, 2))) ||
1528 /* eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) || */
1529 !memcmp(psnap, bridge_tunnel_header, SNAP_SIZE)) {
1530 /* remove RFC1042 or Bridge-Tunnel encapsulation and replace EtherType */
1531 bsnaphdr = true;
1532 } else
1533 /* Leave Ethernet header part of hdr and full payload */
1534 bsnaphdr = false;
1535
1536 rmv_len = pattrib->hdrlen + pattrib->iv_len + (bsnaphdr?SNAP_SIZE:0);
1537 len = precvframe->u.hdr.len - rmv_len;
1538
1539 memcpy(&be_tmp, ptr+rmv_len, 2);
1540 eth_type = ntohs(be_tmp); /* pattrib->ether_type */
1541 pattrib->eth_type = eth_type;
1542
1543 if ((check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)) {
1544 ptr += rmv_len;
1545 *ptr = 0x87;
1546 *(ptr+1) = 0x12;
1547
1548 eth_type = 0x8712;
1549 /* append rx status for mp test packets */
1550 ptr = recvframe_pull(precvframe, (rmv_len-sizeof(struct ethhdr)+2)-24);
1551 memcpy(ptr, get_rxmem(precvframe), 24);
1552 ptr += 24;
1553 } else
1554 ptr = recvframe_pull(precvframe, (rmv_len-sizeof(struct ethhdr) + (bsnaphdr?2:0)));
1555
1556 memcpy(ptr, pattrib->dst, ETH_ALEN);
1557 memcpy(ptr+ETH_ALEN, pattrib->src, ETH_ALEN);
1558
1559 if (!bsnaphdr) {
1560 be_tmp = htons(len);
1561 memcpy(ptr+12, &be_tmp, 2);
1562 }
1563
1564 return _SUCCESS;
1565 }
1566
amsdu_to_msdu(struct adapter * padapter,union recv_frame * prframe)1567 static int amsdu_to_msdu(struct adapter *padapter, union recv_frame *prframe)
1568 {
1569 int a_len, padding_len;
1570 u16 nSubframe_Length;
1571 u8 nr_subframes, i;
1572 u8 *pdata;
1573 struct sk_buff *sub_pkt, *subframes[MAX_SUBFRAME_COUNT];
1574 struct recv_priv *precvpriv = &padapter->recvpriv;
1575 struct __queue *pfree_recv_queue = &(precvpriv->free_recv_queue);
1576
1577 nr_subframes = 0;
1578
1579 recvframe_pull(prframe, prframe->u.hdr.attrib.hdrlen);
1580
1581 if (prframe->u.hdr.attrib.iv_len > 0)
1582 recvframe_pull(prframe, prframe->u.hdr.attrib.iv_len);
1583
1584 a_len = prframe->u.hdr.len;
1585
1586 pdata = prframe->u.hdr.rx_data;
1587
1588 while (a_len > ETH_HLEN) {
1589
1590 /* Offset 12 denote 2 mac address */
1591 nSubframe_Length = get_unaligned_be16(pdata + 12);
1592
1593 if (a_len < (ETHERNET_HEADER_SIZE + nSubframe_Length))
1594 break;
1595
1596 sub_pkt = rtw_os_alloc_msdu_pkt(prframe, nSubframe_Length, pdata);
1597 if (!sub_pkt)
1598 break;
1599
1600 /* move the data point to data content */
1601 pdata += ETH_HLEN;
1602 a_len -= ETH_HLEN;
1603
1604 subframes[nr_subframes++] = sub_pkt;
1605
1606 if (nr_subframes >= MAX_SUBFRAME_COUNT)
1607 break;
1608
1609 pdata += nSubframe_Length;
1610 a_len -= nSubframe_Length;
1611 if (a_len != 0) {
1612 padding_len = 4 - ((nSubframe_Length + ETH_HLEN) & (4-1));
1613 if (padding_len == 4)
1614 padding_len = 0;
1615
1616 if (a_len < padding_len)
1617 break;
1618
1619 pdata += padding_len;
1620 a_len -= padding_len;
1621 }
1622 }
1623
1624 for (i = 0; i < nr_subframes; i++) {
1625 sub_pkt = subframes[i];
1626
1627 /* Indicate the packets to upper layer */
1628 if (sub_pkt)
1629 rtw_os_recv_indicate_pkt(padapter, sub_pkt, &prframe->u.hdr.attrib);
1630 }
1631
1632 prframe->u.hdr.len = 0;
1633 rtw_free_recvframe(prframe, pfree_recv_queue);/* free this recv_frame */
1634
1635 return _SUCCESS;
1636 }
1637
check_indicate_seq(struct recv_reorder_ctrl * preorder_ctrl,u16 seq_num)1638 static int check_indicate_seq(struct recv_reorder_ctrl *preorder_ctrl, u16 seq_num)
1639 {
1640 struct adapter *padapter = preorder_ctrl->padapter;
1641 struct dvobj_priv *psdpriv = padapter->dvobj;
1642 struct debug_priv *pdbgpriv = &psdpriv->drv_dbg;
1643 u8 wsize = preorder_ctrl->wsize_b;
1644 u16 wend = (preorder_ctrl->indicate_seq + wsize - 1) & 0xFFF;/* 4096; */
1645
1646 /* Rx Reorder initialize condition. */
1647 if (preorder_ctrl->indicate_seq == 0xFFFF) {
1648 preorder_ctrl->indicate_seq = seq_num;
1649
1650 /* DbgPrint("check_indicate_seq, 1st->indicate_seq =%d\n", precvpriv->indicate_seq); */
1651 }
1652
1653 /* DbgPrint("enter->check_indicate_seq(): IndicateSeq: %d, NewSeq: %d\n", precvpriv->indicate_seq, seq_num); */
1654
1655 /* Drop out the packet which SeqNum is smaller than WinStart */
1656 if (SN_LESS(seq_num, preorder_ctrl->indicate_seq)) {
1657 /* DbgPrint("CheckRxTsIndicateSeq(): Packet Drop! IndicateSeq: %d, NewSeq: %d\n", precvpriv->indicate_seq, seq_num); */
1658
1659 return false;
1660 }
1661
1662 /* */
1663 /* Sliding window manipulation. Conditions includes: */
1664 /* 1. Incoming SeqNum is equal to WinStart =>Window shift 1 */
1665 /* 2. Incoming SeqNum is larger than the WinEnd => Window shift N */
1666 /* */
1667 if (SN_EQUAL(seq_num, preorder_ctrl->indicate_seq)) {
1668 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF;
1669
1670 } else if (SN_LESS(wend, seq_num)) {
1671 /* DbgPrint("CheckRxTsIndicateSeq(): Window Shift! IndicateSeq: %d, NewSeq: %d\n", precvpriv->indicate_seq, seq_num); */
1672
1673 /* boundary situation, when seq_num cross 0xFFF */
1674 if (seq_num >= (wsize - 1))
1675 preorder_ctrl->indicate_seq = seq_num + 1 - wsize;
1676 else
1677 preorder_ctrl->indicate_seq = 0xFFF - (wsize - (seq_num + 1)) + 1;
1678 pdbgpriv->dbg_rx_ampdu_window_shift_cnt++;
1679 }
1680
1681 /* DbgPrint("exit->check_indicate_seq(): IndicateSeq: %d, NewSeq: %d\n", precvpriv->indicate_seq, seq_num); */
1682
1683 return true;
1684 }
1685
enqueue_reorder_recvframe(struct recv_reorder_ctrl * preorder_ctrl,union recv_frame * prframe)1686 static int enqueue_reorder_recvframe(struct recv_reorder_ctrl *preorder_ctrl, union recv_frame *prframe)
1687 {
1688 struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib;
1689 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
1690 struct list_head *phead, *plist;
1691 union recv_frame *pnextrframe;
1692 struct rx_pkt_attrib *pnextattrib;
1693
1694 /* DbgPrint("+enqueue_reorder_recvframe()\n"); */
1695
1696 /* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */
1697 /* spin_lock(&ppending_recvframe_queue->lock); */
1698
1699
1700 phead = get_list_head(ppending_recvframe_queue);
1701 plist = get_next(phead);
1702
1703 while (phead != plist) {
1704 pnextrframe = (union recv_frame *)plist;
1705 pnextattrib = &pnextrframe->u.hdr.attrib;
1706
1707 if (SN_LESS(pnextattrib->seq_num, pattrib->seq_num))
1708 plist = get_next(plist);
1709 else if (SN_EQUAL(pnextattrib->seq_num, pattrib->seq_num))
1710 /* Duplicate entry is found!! Do not insert current entry. */
1711 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
1712 return false;
1713 else
1714 break;
1715
1716 /* DbgPrint("enqueue_reorder_recvframe():while\n"); */
1717
1718 }
1719
1720
1721 /* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */
1722 /* spin_lock(&ppending_recvframe_queue->lock); */
1723
1724 list_del_init(&(prframe->u.hdr.list));
1725
1726 list_add_tail(&(prframe->u.hdr.list), plist);
1727
1728 /* spin_unlock(&ppending_recvframe_queue->lock); */
1729 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
1730
1731 return true;
1732
1733 }
1734
recv_indicatepkts_pkt_loss_cnt(struct debug_priv * pdbgpriv,u64 prev_seq,u64 current_seq)1735 static void recv_indicatepkts_pkt_loss_cnt(struct debug_priv *pdbgpriv, u64 prev_seq, u64 current_seq)
1736 {
1737 if (current_seq < prev_seq)
1738 pdbgpriv->dbg_rx_ampdu_loss_count += (4096 + current_seq - prev_seq);
1739 else
1740 pdbgpriv->dbg_rx_ampdu_loss_count += (current_seq - prev_seq);
1741
1742 }
1743
recv_indicatepkts_in_order(struct adapter * padapter,struct recv_reorder_ctrl * preorder_ctrl,int bforced)1744 static int recv_indicatepkts_in_order(struct adapter *padapter, struct recv_reorder_ctrl *preorder_ctrl, int bforced)
1745 {
1746 struct list_head *phead, *plist;
1747 union recv_frame *prframe;
1748 struct rx_pkt_attrib *pattrib;
1749 /* u8 index = 0; */
1750 int bPktInBuf = false;
1751 struct recv_priv *precvpriv = &padapter->recvpriv;
1752 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
1753 struct dvobj_priv *psdpriv = padapter->dvobj;
1754 struct debug_priv *pdbgpriv = &psdpriv->drv_dbg;
1755
1756 /* DbgPrint("+recv_indicatepkts_in_order\n"); */
1757
1758 /* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */
1759 /* spin_lock(&ppending_recvframe_queue->lock); */
1760
1761 phead = get_list_head(ppending_recvframe_queue);
1762 plist = get_next(phead);
1763
1764 /* Handling some condition for forced indicate case. */
1765 if (bforced == true) {
1766 pdbgpriv->dbg_rx_ampdu_forced_indicate_count++;
1767 if (list_empty(phead)) {
1768 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
1769 /* spin_unlock(&ppending_recvframe_queue->lock); */
1770 return true;
1771 }
1772
1773 prframe = (union recv_frame *)plist;
1774 pattrib = &prframe->u.hdr.attrib;
1775
1776 recv_indicatepkts_pkt_loss_cnt(pdbgpriv, preorder_ctrl->indicate_seq, pattrib->seq_num);
1777 preorder_ctrl->indicate_seq = pattrib->seq_num;
1778
1779 }
1780
1781 /* Prepare indication list and indication. */
1782 /* Check if there is any packet need indicate. */
1783 while (!list_empty(phead)) {
1784
1785 prframe = (union recv_frame *)plist;
1786 pattrib = &prframe->u.hdr.attrib;
1787
1788 if (!SN_LESS(preorder_ctrl->indicate_seq, pattrib->seq_num)) {
1789 plist = get_next(plist);
1790 list_del_init(&(prframe->u.hdr.list));
1791
1792 if (SN_EQUAL(preorder_ctrl->indicate_seq, pattrib->seq_num))
1793 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF;
1794
1795 /* Set this as a lock to make sure that only one thread is indicating packet. */
1796 /* pTS->RxIndicateState = RXTS_INDICATE_PROCESSING; */
1797
1798 /* Indicate packets */
1799 /* RT_ASSERT((index<=REORDER_WIN_SIZE), ("RxReorderIndicatePacket(): Rx Reorder buffer full!!\n")); */
1800
1801
1802 /* indicate this recv_frame */
1803 /* DbgPrint("recv_indicatepkts_in_order, indicate_seq =%d, seq_num =%d\n", precvpriv->indicate_seq, pattrib->seq_num); */
1804 if (!pattrib->amsdu) {
1805 if ((padapter->bDriverStopped == false) &&
1806 (padapter->bSurpriseRemoved == false))
1807 rtw_recv_indicatepkt(padapter, prframe);/* indicate this recv_frame */
1808
1809 } else if (pattrib->amsdu == 1) {
1810 if (amsdu_to_msdu(padapter, prframe) != _SUCCESS)
1811 rtw_free_recvframe(prframe, &precvpriv->free_recv_queue);
1812
1813 } else {
1814 /* error condition; */
1815 }
1816
1817
1818 /* Update local variables. */
1819 bPktInBuf = false;
1820
1821 } else {
1822 bPktInBuf = true;
1823 break;
1824 }
1825
1826 /* DbgPrint("recv_indicatepkts_in_order():while\n"); */
1827
1828 }
1829
1830 /* spin_unlock(&ppending_recvframe_queue->lock); */
1831 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
1832
1833 return bPktInBuf;
1834 }
1835
recv_indicatepkt_reorder(struct adapter * padapter,union recv_frame * prframe)1836 static int recv_indicatepkt_reorder(struct adapter *padapter, union recv_frame *prframe)
1837 {
1838 int retval = _SUCCESS;
1839 struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib;
1840 struct recv_reorder_ctrl *preorder_ctrl = prframe->u.hdr.preorder_ctrl;
1841 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
1842 struct dvobj_priv *psdpriv = padapter->dvobj;
1843 struct debug_priv *pdbgpriv = &psdpriv->drv_dbg;
1844
1845 if (!pattrib->amsdu) {
1846 /* s1. */
1847 wlanhdr_to_ethhdr(prframe);
1848
1849 if (pattrib->qos != 1) {
1850 if ((padapter->bDriverStopped == false) &&
1851 (padapter->bSurpriseRemoved == false)) {
1852 rtw_recv_indicatepkt(padapter, prframe);
1853 return _SUCCESS;
1854
1855 }
1856
1857 return _FAIL;
1858
1859 }
1860
1861 if (preorder_ctrl->enable == false) {
1862 /* indicate this recv_frame */
1863 preorder_ctrl->indicate_seq = pattrib->seq_num;
1864
1865 rtw_recv_indicatepkt(padapter, prframe);
1866
1867 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096;
1868
1869 return _SUCCESS;
1870 }
1871 } else if (pattrib->amsdu == 1) { /* temp filter -> means didn't support A-MSDUs in a A-MPDU */
1872 if (preorder_ctrl->enable == false) {
1873 preorder_ctrl->indicate_seq = pattrib->seq_num;
1874
1875 retval = amsdu_to_msdu(padapter, prframe);
1876
1877 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096;
1878
1879 if (retval != _SUCCESS) {
1880 }
1881
1882 return retval;
1883 }
1884 }
1885
1886 spin_lock_bh(&ppending_recvframe_queue->lock);
1887
1888 /* s2. check if winstart_b(indicate_seq) needs to been updated */
1889 if (!check_indicate_seq(preorder_ctrl, pattrib->seq_num)) {
1890 pdbgpriv->dbg_rx_ampdu_drop_count++;
1891 goto _err_exit;
1892 }
1893
1894
1895 /* s3. Insert all packet into Reorder Queue to maintain its ordering. */
1896 if (!enqueue_reorder_recvframe(preorder_ctrl, prframe)) {
1897 /* DbgPrint("recv_indicatepkt_reorder, enqueue_reorder_recvframe fail!\n"); */
1898 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
1899 /* return _FAIL; */
1900 goto _err_exit;
1901 }
1902
1903
1904 /* s4. */
1905 /* Indication process. */
1906 /* After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets */
1907 /* with the SeqNum smaller than latest WinStart and buffer other packets. */
1908 /* */
1909 /* For Rx Reorder condition: */
1910 /* 1. All packets with SeqNum smaller than WinStart => Indicate */
1911 /* 2. All packets with SeqNum larger than or equal to WinStart => Buffer it. */
1912 /* */
1913
1914 /* recv_indicatepkts_in_order(padapter, preorder_ctrl, true); */
1915 if (recv_indicatepkts_in_order(padapter, preorder_ctrl, false) == true) {
1916 _set_timer(&preorder_ctrl->reordering_ctrl_timer, REORDER_WAIT_TIME);
1917 spin_unlock_bh(&ppending_recvframe_queue->lock);
1918 } else {
1919 spin_unlock_bh(&ppending_recvframe_queue->lock);
1920 del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
1921 }
1922
1923 return _SUCCESS;
1924
1925 _err_exit:
1926 spin_unlock_bh(&ppending_recvframe_queue->lock);
1927
1928 return _FAIL;
1929 }
1930
1931
rtw_reordering_ctrl_timeout_handler(struct timer_list * t)1932 void rtw_reordering_ctrl_timeout_handler(struct timer_list *t)
1933 {
1934 struct recv_reorder_ctrl *preorder_ctrl =
1935 from_timer(preorder_ctrl, t, reordering_ctrl_timer);
1936 struct adapter *padapter = preorder_ctrl->padapter;
1937 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
1938
1939
1940 if (padapter->bDriverStopped || padapter->bSurpriseRemoved)
1941 return;
1942
1943 spin_lock_bh(&ppending_recvframe_queue->lock);
1944
1945 if (recv_indicatepkts_in_order(padapter, preorder_ctrl, true) == true)
1946 _set_timer(&preorder_ctrl->reordering_ctrl_timer, REORDER_WAIT_TIME);
1947
1948 spin_unlock_bh(&ppending_recvframe_queue->lock);
1949
1950 }
1951
process_recv_indicatepkts(struct adapter * padapter,union recv_frame * prframe)1952 static int process_recv_indicatepkts(struct adapter *padapter, union recv_frame *prframe)
1953 {
1954 int retval = _SUCCESS;
1955 /* struct recv_priv *precvpriv = &padapter->recvpriv; */
1956 /* struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib; */
1957 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
1958 struct ht_priv *phtpriv = &pmlmepriv->htpriv;
1959
1960 if (phtpriv->ht_option == true) { /* B/G/N Mode */
1961 /* prframe->u.hdr.preorder_ctrl = &precvpriv->recvreorder_ctrl[pattrib->priority]; */
1962
1963 if (recv_indicatepkt_reorder(padapter, prframe) != _SUCCESS) { /* including perform A-MPDU Rx Ordering Buffer Control */
1964
1965 if ((padapter->bDriverStopped == false) &&
1966 (padapter->bSurpriseRemoved == false)) {
1967 retval = _FAIL;
1968 return retval;
1969 }
1970 }
1971 } else { /* B/G mode */
1972 retval = wlanhdr_to_ethhdr(prframe);
1973 if (retval != _SUCCESS)
1974 return retval;
1975
1976 if ((padapter->bDriverStopped == false) && (padapter->bSurpriseRemoved == false)) {
1977 /* indicate this recv_frame */
1978 rtw_recv_indicatepkt(padapter, prframe);
1979 } else {
1980 retval = _FAIL;
1981 return retval;
1982 }
1983
1984 }
1985
1986 return retval;
1987
1988 }
1989
recv_func_prehandle(struct adapter * padapter,union recv_frame * rframe)1990 static int recv_func_prehandle(struct adapter *padapter, union recv_frame *rframe)
1991 {
1992 int ret = _SUCCESS;
1993 struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
1994
1995 /* check the frame crtl field and decache */
1996 ret = validate_recv_frame(padapter, rframe);
1997 if (ret != _SUCCESS) {
1998 rtw_free_recvframe(rframe, pfree_recv_queue);/* free this recv_frame */
1999 goto exit;
2000 }
2001
2002 exit:
2003 return ret;
2004 }
2005
recv_func_posthandle(struct adapter * padapter,union recv_frame * prframe)2006 static int recv_func_posthandle(struct adapter *padapter, union recv_frame *prframe)
2007 {
2008 int ret = _SUCCESS;
2009 union recv_frame *orig_prframe = prframe;
2010 struct recv_priv *precvpriv = &padapter->recvpriv;
2011 struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
2012
2013 prframe = decryptor(padapter, prframe);
2014 if (!prframe) {
2015 ret = _FAIL;
2016 goto _recv_data_drop;
2017 }
2018
2019 prframe = recvframe_chk_defrag(padapter, prframe);
2020 if (!prframe)
2021 goto _recv_data_drop;
2022
2023 prframe = portctrl(padapter, prframe);
2024 if (!prframe) {
2025 ret = _FAIL;
2026 goto _recv_data_drop;
2027 }
2028
2029 count_rx_stats(padapter, prframe, NULL);
2030
2031 ret = process_recv_indicatepkts(padapter, prframe);
2032 if (ret != _SUCCESS) {
2033 rtw_free_recvframe(orig_prframe, pfree_recv_queue);/* free this recv_frame */
2034 goto _recv_data_drop;
2035 }
2036
2037 _recv_data_drop:
2038 precvpriv->rx_drop++;
2039 return ret;
2040 }
2041
recv_func(struct adapter * padapter,union recv_frame * rframe)2042 static int recv_func(struct adapter *padapter, union recv_frame *rframe)
2043 {
2044 int ret;
2045 struct rx_pkt_attrib *prxattrib = &rframe->u.hdr.attrib;
2046 struct recv_priv *recvpriv = &padapter->recvpriv;
2047 struct security_priv *psecuritypriv = &padapter->securitypriv;
2048 struct mlme_priv *mlmepriv = &padapter->mlmepriv;
2049
2050 /* check if need to handle uc_swdec_pending_queue*/
2051 if (check_fwstate(mlmepriv, WIFI_STATION_STATE) && psecuritypriv->busetkipkey) {
2052 union recv_frame *pending_frame;
2053 int cnt = 0;
2054
2055 while ((pending_frame = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue))) {
2056 cnt++;
2057 recv_func_posthandle(padapter, pending_frame);
2058 }
2059 }
2060
2061 ret = recv_func_prehandle(padapter, rframe);
2062
2063 if (ret == _SUCCESS) {
2064
2065 /* check if need to enqueue into uc_swdec_pending_queue*/
2066 if (check_fwstate(mlmepriv, WIFI_STATION_STATE) &&
2067 !IS_MCAST(prxattrib->ra) && prxattrib->encrypt > 0 &&
2068 (prxattrib->bdecrypted == 0 || psecuritypriv->sw_decrypt == true) &&
2069 psecuritypriv->ndisauthtype == Ndis802_11AuthModeWPAPSK &&
2070 !psecuritypriv->busetkipkey) {
2071 rtw_enqueue_recvframe(rframe, &padapter->recvpriv.uc_swdec_pending_queue);
2072
2073 if (recvpriv->free_recvframe_cnt < NR_RECVFRAME/4) {
2074 /* to prevent from recvframe starvation, get recvframe from uc_swdec_pending_queue to free_recvframe_cnt */
2075 rframe = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue);
2076 if (rframe)
2077 goto do_posthandle;
2078 }
2079 goto exit;
2080 }
2081
2082 do_posthandle:
2083 ret = recv_func_posthandle(padapter, rframe);
2084 }
2085
2086 exit:
2087 return ret;
2088 }
2089
2090
rtw_recv_entry(union recv_frame * precvframe)2091 s32 rtw_recv_entry(union recv_frame *precvframe)
2092 {
2093 struct adapter *padapter;
2094 struct recv_priv *precvpriv;
2095 s32 ret = _SUCCESS;
2096
2097 padapter = precvframe->u.hdr.adapter;
2098
2099 precvpriv = &padapter->recvpriv;
2100
2101 ret = recv_func(padapter, precvframe);
2102 if (ret == _FAIL) {
2103 goto _recv_entry_drop;
2104 }
2105
2106
2107 precvpriv->rx_pkts++;
2108
2109 return ret;
2110
2111 _recv_entry_drop:
2112
2113 return ret;
2114 }
2115
rtw_signal_stat_timer_hdl(struct timer_list * t)2116 static void rtw_signal_stat_timer_hdl(struct timer_list *t)
2117 {
2118 struct adapter *adapter =
2119 from_timer(adapter, t, recvpriv.signal_stat_timer);
2120 struct recv_priv *recvpriv = &adapter->recvpriv;
2121
2122 u32 tmp_s, tmp_q;
2123 u8 avg_signal_strength = 0;
2124 u8 avg_signal_qual = 0;
2125 u32 num_signal_strength = 0;
2126 u32 num_signal_qual = 0;
2127 u8 _alpha = 5; /* this value is based on converging_constant = 5000 and sampling_interval = 1000 */
2128
2129 if (adapter->recvpriv.is_signal_dbg) {
2130 /* update the user specific value, signal_strength_dbg, to signal_strength, rssi */
2131 adapter->recvpriv.signal_strength = adapter->recvpriv.signal_strength_dbg;
2132 adapter->recvpriv.rssi = (s8)translate_percentage_to_dbm((u8)adapter->recvpriv.signal_strength_dbg);
2133 } else {
2134
2135 if (recvpriv->signal_strength_data.update_req == 0) {/* update_req is clear, means we got rx */
2136 avg_signal_strength = recvpriv->signal_strength_data.avg_val;
2137 num_signal_strength = recvpriv->signal_strength_data.total_num;
2138 /* after avg_vals are acquired, we can re-stat the signal values */
2139 recvpriv->signal_strength_data.update_req = 1;
2140 }
2141
2142 if (recvpriv->signal_qual_data.update_req == 0) {/* update_req is clear, means we got rx */
2143 avg_signal_qual = recvpriv->signal_qual_data.avg_val;
2144 num_signal_qual = recvpriv->signal_qual_data.total_num;
2145 /* after avg_vals are acquired, we can re-stat the signal values */
2146 recvpriv->signal_qual_data.update_req = 1;
2147 }
2148
2149 if (num_signal_strength == 0) {
2150 if (rtw_get_on_cur_ch_time(adapter) == 0 ||
2151 jiffies_to_msecs(jiffies - rtw_get_on_cur_ch_time(adapter)) < 2 * adapter->mlmeextpriv.mlmext_info.bcn_interval
2152 ) {
2153 goto set_timer;
2154 }
2155 }
2156
2157 if (check_fwstate(&adapter->mlmepriv, _FW_UNDER_SURVEY) == true ||
2158 check_fwstate(&adapter->mlmepriv, _FW_LINKED) == false
2159 ) {
2160 goto set_timer;
2161 }
2162
2163 /* update value of signal_strength, rssi, signal_qual */
2164 tmp_s = (avg_signal_strength+(_alpha-1)*recvpriv->signal_strength);
2165 if (tmp_s % _alpha)
2166 tmp_s = tmp_s/_alpha + 1;
2167 else
2168 tmp_s = tmp_s/_alpha;
2169 if (tmp_s > 100)
2170 tmp_s = 100;
2171
2172 tmp_q = (avg_signal_qual+(_alpha-1)*recvpriv->signal_qual);
2173 if (tmp_q % _alpha)
2174 tmp_q = tmp_q/_alpha + 1;
2175 else
2176 tmp_q = tmp_q/_alpha;
2177 if (tmp_q > 100)
2178 tmp_q = 100;
2179
2180 recvpriv->signal_strength = tmp_s;
2181 recvpriv->rssi = (s8)translate_percentage_to_dbm(tmp_s);
2182 recvpriv->signal_qual = tmp_q;
2183 }
2184
2185 set_timer:
2186 rtw_set_signal_stat_timer(recvpriv);
2187
2188 }
2189