1 // SPDX-License-Identifier: GPL-2.0
2 /******************************************************************************
3 *
4 * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
5 *
6 ******************************************************************************/
7 #include <drv_types.h>
8 #include <rtw_debug.h>
9 #include <linux/jiffies.h>
10 #include <rtw_recv.h>
11 #include <net/cfg80211.h>
12 #include <asm/unaligned.h>
13
14 static u8 SNAP_ETH_TYPE_IPX[2] = {0x81, 0x37};
15 static u8 SNAP_ETH_TYPE_APPLETALK_AARP[2] = {0x80, 0xf3};
16
17 static void rtw_signal_stat_timer_hdl(struct timer_list *t);
18
_rtw_init_sta_recv_priv(struct sta_recv_priv * psta_recvpriv)19 void _rtw_init_sta_recv_priv(struct sta_recv_priv *psta_recvpriv)
20 {
21 memset((u8 *)psta_recvpriv, 0, sizeof(struct sta_recv_priv));
22
23 spin_lock_init(&psta_recvpriv->lock);
24
25 /* for (i = 0; i<MAX_RX_NUMBLKS; i++) */
26 /* _rtw_init_queue(&psta_recvpriv->blk_strms[i]); */
27
28 INIT_LIST_HEAD(&psta_recvpriv->defrag_q.queue);
29 spin_lock_init(&psta_recvpriv->defrag_q.lock);
30 }
31
_rtw_init_recv_priv(struct recv_priv * precvpriv,struct adapter * padapter)32 signed int _rtw_init_recv_priv(struct recv_priv *precvpriv, struct adapter *padapter)
33 {
34 signed int i;
35 union recv_frame *precvframe;
36 signed int res = _SUCCESS;
37
38 spin_lock_init(&precvpriv->lock);
39
40 INIT_LIST_HEAD(&precvpriv->free_recv_queue.queue);
41 spin_lock_init(&precvpriv->free_recv_queue.lock);
42 INIT_LIST_HEAD(&precvpriv->recv_pending_queue.queue);
43 spin_lock_init(&precvpriv->recv_pending_queue.lock);
44 INIT_LIST_HEAD(&precvpriv->uc_swdec_pending_queue.queue);
45 spin_lock_init(&precvpriv->uc_swdec_pending_queue.lock);
46
47 precvpriv->adapter = padapter;
48
49 precvpriv->free_recvframe_cnt = NR_RECVFRAME;
50
51 precvpriv->pallocated_frame_buf = vzalloc(NR_RECVFRAME * sizeof(union recv_frame) + RXFRAME_ALIGN_SZ);
52
53 if (!precvpriv->pallocated_frame_buf) {
54 res = _FAIL;
55 goto exit;
56 }
57
58 precvpriv->precv_frame_buf = (u8 *)N_BYTE_ALIGMENT((SIZE_PTR)(precvpriv->pallocated_frame_buf), RXFRAME_ALIGN_SZ);
59 /* precvpriv->precv_frame_buf = precvpriv->pallocated_frame_buf + RXFRAME_ALIGN_SZ - */
60 /* ((SIZE_PTR) (precvpriv->pallocated_frame_buf) &(RXFRAME_ALIGN_SZ-1)); */
61
62 precvframe = (union recv_frame *) precvpriv->precv_frame_buf;
63
64
65 for (i = 0; i < NR_RECVFRAME; i++) {
66 INIT_LIST_HEAD(&(precvframe->u.list));
67
68 list_add_tail(&(precvframe->u.list), &(precvpriv->free_recv_queue.queue));
69
70 rtw_os_recv_resource_alloc(padapter, precvframe);
71
72 precvframe->u.hdr.len = 0;
73
74 precvframe->u.hdr.adapter = padapter;
75 precvframe++;
76
77 }
78
79 res = rtw_hal_init_recv_priv(padapter);
80
81 timer_setup(&precvpriv->signal_stat_timer, rtw_signal_stat_timer_hdl,
82 0);
83
84 precvpriv->signal_stat_sampling_interval = 2000; /* ms */
85
86 rtw_set_signal_stat_timer(precvpriv);
87
88 exit:
89 return res;
90 }
91
_rtw_free_recv_priv(struct recv_priv * precvpriv)92 void _rtw_free_recv_priv(struct recv_priv *precvpriv)
93 {
94 struct adapter *padapter = precvpriv->adapter;
95
96 rtw_free_uc_swdec_pending_queue(padapter);
97
98 rtw_os_recv_resource_free(precvpriv);
99
100 vfree(precvpriv->pallocated_frame_buf);
101
102 rtw_hal_free_recv_priv(padapter);
103 }
104
_rtw_alloc_recvframe(struct __queue * pfree_recv_queue)105 union recv_frame *_rtw_alloc_recvframe(struct __queue *pfree_recv_queue)
106 {
107
108 union recv_frame *precvframe;
109 struct list_head *plist, *phead;
110 struct adapter *padapter;
111 struct recv_priv *precvpriv;
112
113 if (list_empty(&pfree_recv_queue->queue))
114 precvframe = NULL;
115 else {
116 phead = get_list_head(pfree_recv_queue);
117
118 plist = get_next(phead);
119
120 precvframe = (union recv_frame *)plist;
121
122 list_del_init(&precvframe->u.hdr.list);
123 padapter = precvframe->u.hdr.adapter;
124 if (padapter) {
125 precvpriv = &padapter->recvpriv;
126 if (pfree_recv_queue == &precvpriv->free_recv_queue)
127 precvpriv->free_recvframe_cnt--;
128 }
129 }
130 return precvframe;
131 }
132
rtw_alloc_recvframe(struct __queue * pfree_recv_queue)133 union recv_frame *rtw_alloc_recvframe(struct __queue *pfree_recv_queue)
134 {
135 union recv_frame *precvframe;
136
137 spin_lock_bh(&pfree_recv_queue->lock);
138
139 precvframe = _rtw_alloc_recvframe(pfree_recv_queue);
140
141 spin_unlock_bh(&pfree_recv_queue->lock);
142
143 return precvframe;
144 }
145
rtw_free_recvframe(union recv_frame * precvframe,struct __queue * pfree_recv_queue)146 int rtw_free_recvframe(union recv_frame *precvframe, struct __queue *pfree_recv_queue)
147 {
148 struct adapter *padapter = precvframe->u.hdr.adapter;
149 struct recv_priv *precvpriv = &padapter->recvpriv;
150
151 rtw_os_free_recvframe(precvframe);
152
153
154 spin_lock_bh(&pfree_recv_queue->lock);
155
156 list_del_init(&(precvframe->u.hdr.list));
157
158 precvframe->u.hdr.len = 0;
159
160 list_add_tail(&(precvframe->u.hdr.list), get_list_head(pfree_recv_queue));
161
162 if (padapter) {
163 if (pfree_recv_queue == &precvpriv->free_recv_queue)
164 precvpriv->free_recvframe_cnt++;
165 }
166 spin_unlock_bh(&pfree_recv_queue->lock);
167 return _SUCCESS;
168 }
169
170
171
172
_rtw_enqueue_recvframe(union recv_frame * precvframe,struct __queue * queue)173 signed int _rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue)
174 {
175
176 struct adapter *padapter = precvframe->u.hdr.adapter;
177 struct recv_priv *precvpriv = &padapter->recvpriv;
178
179 /* INIT_LIST_HEAD(&(precvframe->u.hdr.list)); */
180 list_del_init(&(precvframe->u.hdr.list));
181
182
183 list_add_tail(&(precvframe->u.hdr.list), get_list_head(queue));
184
185 if (padapter)
186 if (queue == &precvpriv->free_recv_queue)
187 precvpriv->free_recvframe_cnt++;
188
189 return _SUCCESS;
190 }
191
rtw_enqueue_recvframe(union recv_frame * precvframe,struct __queue * queue)192 signed int rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue)
193 {
194 signed int ret;
195
196 /* _spinlock(&pfree_recv_queue->lock); */
197 spin_lock_bh(&queue->lock);
198 ret = _rtw_enqueue_recvframe(precvframe, queue);
199 /* spin_unlock(&pfree_recv_queue->lock); */
200 spin_unlock_bh(&queue->lock);
201
202 return ret;
203 }
204
205 /*
206 * caller : defrag ; recvframe_chk_defrag in recv_thread (passive)
207 * pframequeue: defrag_queue : will be accessed in recv_thread (passive)
208 *
209 * using spinlock to protect
210 *
211 */
212
rtw_free_recvframe_queue(struct __queue * pframequeue,struct __queue * pfree_recv_queue)213 void rtw_free_recvframe_queue(struct __queue *pframequeue, struct __queue *pfree_recv_queue)
214 {
215 union recv_frame *precvframe;
216 struct list_head *plist, *phead;
217
218 spin_lock(&pframequeue->lock);
219
220 phead = get_list_head(pframequeue);
221 plist = get_next(phead);
222
223 while (phead != plist) {
224 precvframe = (union recv_frame *)plist;
225
226 plist = get_next(plist);
227
228 rtw_free_recvframe(precvframe, pfree_recv_queue);
229 }
230
231 spin_unlock(&pframequeue->lock);
232 }
233
rtw_free_uc_swdec_pending_queue(struct adapter * adapter)234 u32 rtw_free_uc_swdec_pending_queue(struct adapter *adapter)
235 {
236 u32 cnt = 0;
237 union recv_frame *pending_frame;
238
239 while ((pending_frame = rtw_alloc_recvframe(&adapter->recvpriv.uc_swdec_pending_queue))) {
240 rtw_free_recvframe(pending_frame, &adapter->recvpriv.free_recv_queue);
241 cnt++;
242 }
243
244 return cnt;
245 }
246
247
rtw_enqueue_recvbuf_to_head(struct recv_buf * precvbuf,struct __queue * queue)248 signed int rtw_enqueue_recvbuf_to_head(struct recv_buf *precvbuf, struct __queue *queue)
249 {
250 spin_lock_bh(&queue->lock);
251
252 list_del_init(&precvbuf->list);
253 list_add(&precvbuf->list, get_list_head(queue));
254
255 spin_unlock_bh(&queue->lock);
256
257 return _SUCCESS;
258 }
259
rtw_enqueue_recvbuf(struct recv_buf * precvbuf,struct __queue * queue)260 signed int rtw_enqueue_recvbuf(struct recv_buf *precvbuf, struct __queue *queue)
261 {
262 spin_lock_bh(&queue->lock);
263
264 list_del_init(&precvbuf->list);
265
266 list_add_tail(&precvbuf->list, get_list_head(queue));
267 spin_unlock_bh(&queue->lock);
268 return _SUCCESS;
269
270 }
271
rtw_dequeue_recvbuf(struct __queue * queue)272 struct recv_buf *rtw_dequeue_recvbuf(struct __queue *queue)
273 {
274 struct recv_buf *precvbuf;
275 struct list_head *plist, *phead;
276
277 spin_lock_bh(&queue->lock);
278
279 if (list_empty(&queue->queue))
280 precvbuf = NULL;
281 else {
282 phead = get_list_head(queue);
283
284 plist = get_next(phead);
285
286 precvbuf = container_of(plist, struct recv_buf, list);
287
288 list_del_init(&precvbuf->list);
289
290 }
291
292 spin_unlock_bh(&queue->lock);
293
294 return precvbuf;
295
296 }
297
recvframe_chkmic(struct adapter * adapter,union recv_frame * precvframe)298 static signed int recvframe_chkmic(struct adapter *adapter, union recv_frame *precvframe)
299 {
300
301 signed int i, res = _SUCCESS;
302 u32 datalen;
303 u8 miccode[8];
304 u8 bmic_err = false, brpt_micerror = true;
305 u8 *pframe, *payload, *pframemic;
306 u8 *mickey;
307 /* u8 *iv, rxdata_key_idx = 0; */
308 struct sta_info *stainfo;
309 struct rx_pkt_attrib *prxattrib = &precvframe->u.hdr.attrib;
310 struct security_priv *psecuritypriv = &adapter->securitypriv;
311
312 struct mlme_ext_priv *pmlmeext = &adapter->mlmeextpriv;
313 struct mlme_ext_info *pmlmeinfo = &(pmlmeext->mlmext_info);
314
315 stainfo = rtw_get_stainfo(&adapter->stapriv, &prxattrib->ta[0]);
316
317 if (prxattrib->encrypt == _TKIP_) {
318 /* calculate mic code */
319 if (stainfo) {
320 if (is_multicast_ether_addr(prxattrib->ra)) {
321 /* mickey =&psecuritypriv->dot118021XGrprxmickey.skey[0]; */
322 /* iv = precvframe->u.hdr.rx_data+prxattrib->hdrlen; */
323 /* rxdata_key_idx =(((iv[3])>>6)&0x3) ; */
324 mickey = &psecuritypriv->dot118021XGrprxmickey[prxattrib->key_index].skey[0];
325
326 /* psecuritypriv->dot118021XGrpKeyid, pmlmeinfo->key_index, rxdata_key_idx); */
327
328 if (psecuritypriv->binstallGrpkey == false) {
329 res = _FAIL;
330 goto exit;
331 }
332 } else {
333 mickey = &stainfo->dot11tkiprxmickey.skey[0];
334 }
335
336 datalen = precvframe->u.hdr.len-prxattrib->hdrlen-prxattrib->iv_len-prxattrib->icv_len-8;/* icv_len included the mic code */
337 pframe = precvframe->u.hdr.rx_data;
338 payload = pframe+prxattrib->hdrlen+prxattrib->iv_len;
339
340 rtw_seccalctkipmic(mickey, pframe, payload, datalen, &miccode[0], (unsigned char)prxattrib->priority); /* care the length of the data */
341
342 pframemic = payload+datalen;
343
344 bmic_err = false;
345
346 for (i = 0; i < 8; i++) {
347 if (miccode[i] != *(pframemic + i))
348 bmic_err = true;
349 }
350
351
352 if (bmic_err == true) {
353 /* double check key_index for some timing issue , */
354 /* cannot compare with psecuritypriv->dot118021XGrpKeyid also cause timing issue */
355 if ((is_multicast_ether_addr(prxattrib->ra) == true) && (prxattrib->key_index != pmlmeinfo->key_index))
356 brpt_micerror = false;
357
358 if (prxattrib->bdecrypted && brpt_micerror)
359 rtw_handle_tkip_mic_err(adapter, (u8)is_multicast_ether_addr(prxattrib->ra));
360
361 res = _FAIL;
362
363 } else {
364 /* mic checked ok */
365 if (!psecuritypriv->bcheck_grpkey &&
366 is_multicast_ether_addr(prxattrib->ra))
367 psecuritypriv->bcheck_grpkey = true;
368 }
369 }
370
371 recvframe_pull_tail(precvframe, 8);
372
373 }
374
375 exit:
376 return res;
377
378 }
379
380 /* decrypt and set the ivlen, icvlen of the recv_frame */
decryptor(struct adapter * padapter,union recv_frame * precv_frame)381 static union recv_frame *decryptor(struct adapter *padapter, union recv_frame *precv_frame)
382 {
383
384 struct rx_pkt_attrib *prxattrib = &precv_frame->u.hdr.attrib;
385 struct security_priv *psecuritypriv = &padapter->securitypriv;
386 union recv_frame *return_packet = precv_frame;
387 u32 res = _SUCCESS;
388
389 if (prxattrib->encrypt > 0) {
390 u8 *iv = precv_frame->u.hdr.rx_data+prxattrib->hdrlen;
391
392 prxattrib->key_index = (((iv[3])>>6)&0x3);
393
394 if (prxattrib->key_index > WEP_KEYS) {
395 switch (prxattrib->encrypt) {
396 case _WEP40_:
397 case _WEP104_:
398 prxattrib->key_index = psecuritypriv->dot11PrivacyKeyIndex;
399 break;
400 case _TKIP_:
401 case _AES_:
402 default:
403 prxattrib->key_index = psecuritypriv->dot118021XGrpKeyid;
404 break;
405 }
406 }
407 }
408
409 if ((prxattrib->encrypt > 0) && ((prxattrib->bdecrypted == 0) || (psecuritypriv->sw_decrypt == true))) {
410 psecuritypriv->hw_decrypted = false;
411
412 switch (prxattrib->encrypt) {
413 case _WEP40_:
414 case _WEP104_:
415 rtw_wep_decrypt(padapter, (u8 *)precv_frame);
416 break;
417 case _TKIP_:
418 res = rtw_tkip_decrypt(padapter, (u8 *)precv_frame);
419 break;
420 case _AES_:
421 res = rtw_aes_decrypt(padapter, (u8 *)precv_frame);
422 break;
423 default:
424 break;
425 }
426 } else if (prxattrib->bdecrypted == 1 && prxattrib->encrypt > 0 &&
427 (psecuritypriv->busetkipkey == 1 || prxattrib->encrypt != _TKIP_)
428 ) {
429 psecuritypriv->hw_decrypted = true;
430 } else {
431 }
432
433 if (res == _FAIL) {
434 rtw_free_recvframe(return_packet, &padapter->recvpriv.free_recv_queue);
435 return_packet = NULL;
436 } else
437 prxattrib->bdecrypted = true;
438
439 return return_packet;
440 }
441
442 /* set the security information in the recv_frame */
portctrl(struct adapter * adapter,union recv_frame * precv_frame)443 static union recv_frame *portctrl(struct adapter *adapter, union recv_frame *precv_frame)
444 {
445 u8 *psta_addr = NULL;
446 u8 *ptr;
447 uint auth_alg;
448 struct recv_frame_hdr *pfhdr;
449 struct sta_info *psta;
450 struct sta_priv *pstapriv;
451 union recv_frame *prtnframe;
452 u16 ether_type = 0;
453 u16 eapol_type = 0x888e;/* for Funia BD's WPA issue */
454 struct rx_pkt_attrib *pattrib;
455
456 pstapriv = &adapter->stapriv;
457
458 auth_alg = adapter->securitypriv.dot11AuthAlgrthm;
459
460 ptr = precv_frame->u.hdr.rx_data;
461 pfhdr = &precv_frame->u.hdr;
462 pattrib = &pfhdr->attrib;
463 psta_addr = pattrib->ta;
464
465 prtnframe = NULL;
466
467 psta = rtw_get_stainfo(pstapriv, psta_addr);
468
469 if (auth_alg == 2) {
470 if ((psta) && (psta->ieee8021x_blocked)) {
471 __be16 be_tmp;
472
473 /* blocked */
474 /* only accept EAPOL frame */
475
476 prtnframe = precv_frame;
477
478 /* get ether_type */
479 ptr = ptr + pfhdr->attrib.hdrlen + pfhdr->attrib.iv_len + LLC_HEADER_LENGTH;
480 memcpy(&be_tmp, ptr, 2);
481 ether_type = ntohs(be_tmp);
482
483 if (ether_type == eapol_type)
484 prtnframe = precv_frame;
485 else {
486 /* free this frame */
487 rtw_free_recvframe(precv_frame, &adapter->recvpriv.free_recv_queue);
488 prtnframe = NULL;
489 }
490 } else {
491 /* allowed */
492 /* check decryption status, and decrypt the frame if needed */
493
494 prtnframe = precv_frame;
495 /* check is the EAPOL frame or not (Rekey) */
496 /* if (ether_type == eapol_type) { */
497 /* check Rekey */
498
499 /* prtnframe =precv_frame; */
500 /* */
501 /* else { */
502 /* */
503 }
504 } else
505 prtnframe = precv_frame;
506
507 return prtnframe;
508 }
509
recv_decache(union recv_frame * precv_frame,u8 bretry,struct stainfo_rxcache * prxcache)510 static signed int recv_decache(union recv_frame *precv_frame, u8 bretry, struct stainfo_rxcache *prxcache)
511 {
512 signed int tid = precv_frame->u.hdr.attrib.priority;
513
514 u16 seq_ctrl = ((precv_frame->u.hdr.attrib.seq_num&0xffff) << 4) |
515 (precv_frame->u.hdr.attrib.frag_num & 0xf);
516
517 if (tid > 15)
518 return _FAIL;
519
520 if (1) { /* if (bretry) */
521 if (seq_ctrl == prxcache->tid_rxseq[tid])
522 return _FAIL;
523 }
524
525 prxcache->tid_rxseq[tid] = seq_ctrl;
526
527 return _SUCCESS;
528
529 }
530
process_pwrbit_data(struct adapter * padapter,union recv_frame * precv_frame)531 static void process_pwrbit_data(struct adapter *padapter, union recv_frame *precv_frame)
532 {
533 unsigned char pwrbit;
534 u8 *ptr = precv_frame->u.hdr.rx_data;
535 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
536 struct sta_priv *pstapriv = &padapter->stapriv;
537 struct sta_info *psta = NULL;
538
539 psta = rtw_get_stainfo(pstapriv, pattrib->src);
540
541 pwrbit = GetPwrMgt(ptr);
542
543 if (psta) {
544 if (pwrbit) {
545 if (!(psta->state & WIFI_SLEEP_STATE)) {
546 /* psta->state |= WIFI_SLEEP_STATE; */
547 /* pstapriv->sta_dz_bitmap |= BIT(psta->aid); */
548
549 stop_sta_xmit(padapter, psta);
550
551 }
552 } else {
553 if (psta->state & WIFI_SLEEP_STATE) {
554 /* psta->state ^= WIFI_SLEEP_STATE; */
555 /* pstapriv->sta_dz_bitmap &= ~BIT(psta->aid); */
556
557 wakeup_sta_to_xmit(padapter, psta);
558 }
559 }
560
561 }
562 }
563
process_wmmps_data(struct adapter * padapter,union recv_frame * precv_frame)564 static void process_wmmps_data(struct adapter *padapter, union recv_frame *precv_frame)
565 {
566 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
567 struct sta_priv *pstapriv = &padapter->stapriv;
568 struct sta_info *psta = NULL;
569
570 psta = rtw_get_stainfo(pstapriv, pattrib->src);
571
572 if (!psta)
573 return;
574
575 if (!psta->qos_option)
576 return;
577
578 if (!(psta->qos_info&0xf))
579 return;
580
581 if (psta->state&WIFI_SLEEP_STATE) {
582 u8 wmmps_ac = 0;
583
584 switch (pattrib->priority) {
585 case 1:
586 case 2:
587 wmmps_ac = psta->uapsd_bk&BIT(1);
588 break;
589 case 4:
590 case 5:
591 wmmps_ac = psta->uapsd_vi&BIT(1);
592 break;
593 case 6:
594 case 7:
595 wmmps_ac = psta->uapsd_vo&BIT(1);
596 break;
597 case 0:
598 case 3:
599 default:
600 wmmps_ac = psta->uapsd_be&BIT(1);
601 break;
602 }
603
604 if (wmmps_ac) {
605 if (psta->sleepq_ac_len > 0)
606 /* process received triggered frame */
607 xmit_delivery_enabled_frames(padapter, psta);
608 else
609 /* issue one qos null frame with More data bit = 0 and the EOSP bit set (= 1) */
610 issue_qos_nulldata(padapter, psta->hwaddr, (u16)pattrib->priority, 0, 0);
611 }
612 }
613 }
614
count_rx_stats(struct adapter * padapter,union recv_frame * prframe,struct sta_info * sta)615 static void count_rx_stats(struct adapter *padapter, union recv_frame *prframe, struct sta_info *sta)
616 {
617 int sz;
618 struct sta_info *psta = NULL;
619 struct stainfo_stats *pstats = NULL;
620 struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib;
621 struct recv_priv *precvpriv = &padapter->recvpriv;
622
623 sz = get_recvframe_len(prframe);
624 precvpriv->rx_bytes += sz;
625
626 padapter->mlmepriv.LinkDetectInfo.NumRxOkInPeriod++;
627
628 if ((!is_broadcast_ether_addr(pattrib->dst)) && (!is_multicast_ether_addr(pattrib->dst)))
629 padapter->mlmepriv.LinkDetectInfo.NumRxUnicastOkInPeriod++;
630
631 if (sta)
632 psta = sta;
633 else
634 psta = prframe->u.hdr.psta;
635
636 if (psta) {
637 pstats = &psta->sta_stats;
638
639 pstats->rx_data_pkts++;
640 pstats->rx_bytes += sz;
641 }
642
643 traffic_check_for_leave_lps(padapter, false, 0);
644 }
645
sta2sta_data_frame(struct adapter * adapter,union recv_frame * precv_frame,struct sta_info ** psta)646 static signed int sta2sta_data_frame(struct adapter *adapter, union recv_frame *precv_frame,
647 struct sta_info **psta)
648 {
649 u8 *ptr = precv_frame->u.hdr.rx_data;
650 signed int ret = _SUCCESS;
651 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
652 struct sta_priv *pstapriv = &adapter->stapriv;
653 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
654 u8 *mybssid = get_bssid(pmlmepriv);
655 u8 *myhwaddr = myid(&adapter->eeprompriv);
656 u8 *sta_addr = NULL;
657 signed int bmcast = is_multicast_ether_addr(pattrib->dst);
658
659 if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true) ||
660 (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) == true)) {
661
662 /* filter packets that SA is myself or multicast or broadcast */
663 if (!memcmp(myhwaddr, pattrib->src, ETH_ALEN)) {
664 ret = _FAIL;
665 goto exit;
666 }
667
668 if ((memcmp(myhwaddr, pattrib->dst, ETH_ALEN)) && (!bmcast)) {
669 ret = _FAIL;
670 goto exit;
671 }
672
673 if (is_zero_ether_addr(pattrib->bssid) ||
674 is_zero_ether_addr(mybssid) ||
675 (memcmp(pattrib->bssid, mybssid, ETH_ALEN))) {
676 ret = _FAIL;
677 goto exit;
678 }
679
680 sta_addr = pattrib->src;
681
682 } else if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true) {
683 /* For Station mode, sa and bssid should always be BSSID, and DA is my mac-address */
684 if (memcmp(pattrib->bssid, pattrib->src, ETH_ALEN)) {
685 ret = _FAIL;
686 goto exit;
687 }
688
689 sta_addr = pattrib->bssid;
690 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
691 if (bmcast) {
692 /* For AP mode, if DA == MCAST, then BSSID should be also MCAST */
693 if (!is_multicast_ether_addr(pattrib->bssid)) {
694 ret = _FAIL;
695 goto exit;
696 }
697 } else { /* not mc-frame */
698 /* For AP mode, if DA is non-MCAST, then it must be BSSID, and bssid == BSSID */
699 if (memcmp(pattrib->bssid, pattrib->dst, ETH_ALEN)) {
700 ret = _FAIL;
701 goto exit;
702 }
703
704 sta_addr = pattrib->src;
705 }
706
707 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
708 memcpy(pattrib->dst, GetAddr1Ptr(ptr), ETH_ALEN);
709 memcpy(pattrib->src, GetAddr2Ptr(ptr), ETH_ALEN);
710 memcpy(pattrib->bssid, GetAddr3Ptr(ptr), ETH_ALEN);
711 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
712 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
713
714 sta_addr = mybssid;
715 } else
716 ret = _FAIL;
717
718
719
720 if (bmcast)
721 *psta = rtw_get_bcmc_stainfo(adapter);
722 else
723 *psta = rtw_get_stainfo(pstapriv, sta_addr); /* get ap_info */
724
725 if (!*psta) {
726 ret = _FAIL;
727 goto exit;
728 }
729
730 exit:
731 return ret;
732 }
733
ap2sta_data_frame(struct adapter * adapter,union recv_frame * precv_frame,struct sta_info ** psta)734 static signed int ap2sta_data_frame(struct adapter *adapter, union recv_frame *precv_frame,
735 struct sta_info **psta)
736 {
737 u8 *ptr = precv_frame->u.hdr.rx_data;
738 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
739 signed int ret = _SUCCESS;
740 struct sta_priv *pstapriv = &adapter->stapriv;
741 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
742 u8 *mybssid = get_bssid(pmlmepriv);
743 u8 *myhwaddr = myid(&adapter->eeprompriv);
744 signed int bmcast = is_multicast_ether_addr(pattrib->dst);
745
746 if ((check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true) &&
747 (check_fwstate(pmlmepriv, _FW_LINKED) == true ||
748 check_fwstate(pmlmepriv, _FW_UNDER_LINKING) == true)
749 ) {
750
751 /* filter packets that SA is myself or multicast or broadcast */
752 if (!memcmp(myhwaddr, pattrib->src, ETH_ALEN)) {
753 ret = _FAIL;
754 goto exit;
755 }
756
757 /* da should be for me */
758 if ((memcmp(myhwaddr, pattrib->dst, ETH_ALEN)) && (!bmcast)) {
759 ret = _FAIL;
760 goto exit;
761 }
762
763
764 /* check BSSID */
765 if (is_zero_ether_addr(pattrib->bssid) ||
766 is_zero_ether_addr(mybssid) ||
767 (memcmp(pattrib->bssid, mybssid, ETH_ALEN))) {
768
769 if (!bmcast)
770 issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
771
772 ret = _FAIL;
773 goto exit;
774 }
775
776 if (bmcast)
777 *psta = rtw_get_bcmc_stainfo(adapter);
778 else
779 *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get ap_info */
780
781 if (!*psta) {
782 ret = _FAIL;
783 goto exit;
784 }
785
786 if (GetFrameSubType(ptr) & BIT(6)) {
787 /* No data, will not indicate to upper layer, temporily count it here */
788 count_rx_stats(adapter, precv_frame, *psta);
789 ret = RTW_RX_HANDLED;
790 goto exit;
791 }
792
793 } else if ((check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) &&
794 (check_fwstate(pmlmepriv, _FW_LINKED) == true)) {
795 memcpy(pattrib->dst, GetAddr1Ptr(ptr), ETH_ALEN);
796 memcpy(pattrib->src, GetAddr2Ptr(ptr), ETH_ALEN);
797 memcpy(pattrib->bssid, GetAddr3Ptr(ptr), ETH_ALEN);
798 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
799 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
800
801 /* */
802 memcpy(pattrib->bssid, mybssid, ETH_ALEN);
803
804
805 *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get sta_info */
806 if (!*psta) {
807 ret = _FAIL;
808 goto exit;
809 }
810
811
812 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
813 /* Special case */
814 ret = RTW_RX_HANDLED;
815 goto exit;
816 } else {
817 if (!memcmp(myhwaddr, pattrib->dst, ETH_ALEN) && (!bmcast)) {
818 *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get sta_info */
819 if (!*psta) {
820
821 /* for AP multicast issue , modify by yiwei */
822 static unsigned long send_issue_deauth_time;
823
824 if (jiffies_to_msecs(jiffies - send_issue_deauth_time) > 10000 || send_issue_deauth_time == 0) {
825 send_issue_deauth_time = jiffies;
826
827 issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
828 }
829 }
830 }
831
832 ret = _FAIL;
833 }
834
835 exit:
836 return ret;
837 }
838
sta2ap_data_frame(struct adapter * adapter,union recv_frame * precv_frame,struct sta_info ** psta)839 static signed int sta2ap_data_frame(struct adapter *adapter, union recv_frame *precv_frame,
840 struct sta_info **psta)
841 {
842 u8 *ptr = precv_frame->u.hdr.rx_data;
843 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
844 struct sta_priv *pstapriv = &adapter->stapriv;
845 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
846 unsigned char *mybssid = get_bssid(pmlmepriv);
847 signed int ret = _SUCCESS;
848
849 if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
850 /* For AP mode, RA =BSSID, TX =STA(SRC_ADDR), A3 =DST_ADDR */
851 if (memcmp(pattrib->bssid, mybssid, ETH_ALEN)) {
852 ret = _FAIL;
853 goto exit;
854 }
855
856 *psta = rtw_get_stainfo(pstapriv, pattrib->src);
857 if (!*psta) {
858 issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
859
860 ret = RTW_RX_HANDLED;
861 goto exit;
862 }
863
864 process_pwrbit_data(adapter, precv_frame);
865
866 if ((GetFrameSubType(ptr) & WIFI_QOS_DATA_TYPE) == WIFI_QOS_DATA_TYPE)
867 process_wmmps_data(adapter, precv_frame);
868
869 if (GetFrameSubType(ptr) & BIT(6)) {
870 /* No data, will not indicate to upper layer, temporily count it here */
871 count_rx_stats(adapter, precv_frame, *psta);
872 ret = RTW_RX_HANDLED;
873 goto exit;
874 }
875 } else {
876 u8 *myhwaddr = myid(&adapter->eeprompriv);
877
878 if (memcmp(pattrib->ra, myhwaddr, ETH_ALEN)) {
879 ret = RTW_RX_HANDLED;
880 goto exit;
881 }
882 issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
883 ret = RTW_RX_HANDLED;
884 goto exit;
885 }
886
887 exit:
888 return ret;
889 }
890
validate_recv_ctrl_frame(struct adapter * padapter,union recv_frame * precv_frame)891 static signed int validate_recv_ctrl_frame(struct adapter *padapter, union recv_frame *precv_frame)
892 {
893 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
894 struct sta_priv *pstapriv = &padapter->stapriv;
895 u8 *pframe = precv_frame->u.hdr.rx_data;
896 struct sta_info *psta = NULL;
897 /* uint len = precv_frame->u.hdr.len; */
898
899 if (GetFrameType(pframe) != WIFI_CTRL_TYPE)
900 return _FAIL;
901
902 /* receive the frames that ra(a1) is my address */
903 if (memcmp(GetAddr1Ptr(pframe), myid(&padapter->eeprompriv), ETH_ALEN))
904 return _FAIL;
905
906 psta = rtw_get_stainfo(pstapriv, GetAddr2Ptr(pframe));
907 if (!psta)
908 return _FAIL;
909
910 /* for rx pkt statistics */
911 psta->sta_stats.rx_ctrl_pkts++;
912
913 /* only handle ps-poll */
914 if (GetFrameSubType(pframe) == WIFI_PSPOLL) {
915 u16 aid;
916 u8 wmmps_ac = 0;
917
918 aid = GetAid(pframe);
919 if (psta->aid != aid)
920 return _FAIL;
921
922 switch (pattrib->priority) {
923 case 1:
924 case 2:
925 wmmps_ac = psta->uapsd_bk&BIT(0);
926 break;
927 case 4:
928 case 5:
929 wmmps_ac = psta->uapsd_vi&BIT(0);
930 break;
931 case 6:
932 case 7:
933 wmmps_ac = psta->uapsd_vo&BIT(0);
934 break;
935 case 0:
936 case 3:
937 default:
938 wmmps_ac = psta->uapsd_be&BIT(0);
939 break;
940 }
941
942 if (wmmps_ac)
943 return _FAIL;
944
945 if (psta->state & WIFI_STA_ALIVE_CHK_STATE) {
946 psta->expire_to = pstapriv->expire_to;
947 psta->state ^= WIFI_STA_ALIVE_CHK_STATE;
948 }
949
950 if ((psta->state&WIFI_SLEEP_STATE) && (pstapriv->sta_dz_bitmap&BIT(psta->aid))) {
951 struct list_head *xmitframe_plist, *xmitframe_phead;
952 struct xmit_frame *pxmitframe = NULL;
953 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
954
955 /* spin_lock_bh(&psta->sleep_q.lock); */
956 spin_lock_bh(&pxmitpriv->lock);
957
958 xmitframe_phead = get_list_head(&psta->sleep_q);
959 xmitframe_plist = get_next(xmitframe_phead);
960
961 if (xmitframe_phead != xmitframe_plist) {
962 pxmitframe = container_of(xmitframe_plist, struct xmit_frame, list);
963
964 xmitframe_plist = get_next(xmitframe_plist);
965
966 list_del_init(&pxmitframe->list);
967
968 psta->sleepq_len--;
969
970 if (psta->sleepq_len > 0)
971 pxmitframe->attrib.mdata = 1;
972 else
973 pxmitframe->attrib.mdata = 0;
974
975 pxmitframe->attrib.triggered = 1;
976
977 rtw_hal_xmitframe_enqueue(padapter, pxmitframe);
978
979 if (psta->sleepq_len == 0) {
980 pstapriv->tim_bitmap &= ~BIT(psta->aid);
981
982 /* update BCN for TIM IE */
983 /* update_BCNTIM(padapter); */
984 update_beacon(padapter, WLAN_EID_TIM, NULL, true);
985 }
986
987 /* spin_unlock_bh(&psta->sleep_q.lock); */
988 spin_unlock_bh(&pxmitpriv->lock);
989
990 } else {
991 /* spin_unlock_bh(&psta->sleep_q.lock); */
992 spin_unlock_bh(&pxmitpriv->lock);
993
994 if (pstapriv->tim_bitmap&BIT(psta->aid)) {
995 if (psta->sleepq_len == 0) {
996 /* issue nulldata with More data bit = 0 to indicate we have no buffered packets */
997 issue_nulldata_in_interrupt(padapter, psta->hwaddr);
998 } else {
999 psta->sleepq_len = 0;
1000 }
1001
1002 pstapriv->tim_bitmap &= ~BIT(psta->aid);
1003
1004 /* update BCN for TIM IE */
1005 /* update_BCNTIM(padapter); */
1006 update_beacon(padapter, WLAN_EID_TIM, NULL, true);
1007 }
1008 }
1009 }
1010 }
1011
1012 return _FAIL;
1013
1014 }
1015
1016 /* perform defrag */
recvframe_defrag(struct adapter * adapter,struct __queue * defrag_q)1017 static union recv_frame *recvframe_defrag(struct adapter *adapter,
1018 struct __queue *defrag_q)
1019 {
1020 struct list_head *plist, *phead;
1021 u8 wlanhdr_offset;
1022 u8 curfragnum;
1023 struct recv_frame_hdr *pfhdr, *pnfhdr;
1024 union recv_frame *prframe, *pnextrframe;
1025 struct __queue *pfree_recv_queue;
1026
1027 curfragnum = 0;
1028 pfree_recv_queue = &adapter->recvpriv.free_recv_queue;
1029
1030 phead = get_list_head(defrag_q);
1031 plist = get_next(phead);
1032 prframe = (union recv_frame *)plist;
1033 pfhdr = &prframe->u.hdr;
1034 list_del_init(&(prframe->u.list));
1035
1036 if (curfragnum != pfhdr->attrib.frag_num) {
1037 /* the first fragment number must be 0 */
1038 /* free the whole queue */
1039 rtw_free_recvframe(prframe, pfree_recv_queue);
1040 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
1041
1042 return NULL;
1043 }
1044
1045 curfragnum++;
1046
1047 plist = get_list_head(defrag_q);
1048
1049 plist = get_next(plist);
1050
1051 while (phead != plist) {
1052 pnextrframe = (union recv_frame *)plist;
1053 pnfhdr = &pnextrframe->u.hdr;
1054
1055
1056 /* check the fragment sequence (2nd ~n fragment frame) */
1057
1058 if (curfragnum != pnfhdr->attrib.frag_num) {
1059 /* the fragment number must be increasing (after decache) */
1060 /* release the defrag_q & prframe */
1061 rtw_free_recvframe(prframe, pfree_recv_queue);
1062 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
1063 return NULL;
1064 }
1065
1066 curfragnum++;
1067
1068 /* copy the 2nd~n fragment frame's payload to the first fragment */
1069 /* get the 2nd~last fragment frame's payload */
1070
1071 wlanhdr_offset = pnfhdr->attrib.hdrlen + pnfhdr->attrib.iv_len;
1072
1073 recvframe_pull(pnextrframe, wlanhdr_offset);
1074
1075 /* append to first fragment frame's tail (if privacy frame, pull the ICV) */
1076 recvframe_pull_tail(prframe, pfhdr->attrib.icv_len);
1077
1078 /* memcpy */
1079 memcpy(pfhdr->rx_tail, pnfhdr->rx_data, pnfhdr->len);
1080
1081 recvframe_put(prframe, pnfhdr->len);
1082
1083 pfhdr->attrib.icv_len = pnfhdr->attrib.icv_len;
1084 plist = get_next(plist);
1085
1086 }
1087
1088 /* free the defrag_q queue and return the prframe */
1089 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
1090
1091 return prframe;
1092 }
1093
1094 /* check if need to defrag, if needed queue the frame to defrag_q */
recvframe_chk_defrag(struct adapter * padapter,union recv_frame * precv_frame)1095 static union recv_frame *recvframe_chk_defrag(struct adapter *padapter, union recv_frame *precv_frame)
1096 {
1097 u8 ismfrag;
1098 u8 fragnum;
1099 u8 *psta_addr;
1100 struct recv_frame_hdr *pfhdr;
1101 struct sta_info *psta;
1102 struct sta_priv *pstapriv;
1103 struct list_head *phead;
1104 union recv_frame *prtnframe = NULL;
1105 struct __queue *pfree_recv_queue, *pdefrag_q;
1106
1107 pstapriv = &padapter->stapriv;
1108
1109 pfhdr = &precv_frame->u.hdr;
1110
1111 pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
1112
1113 /* need to define struct of wlan header frame ctrl */
1114 ismfrag = pfhdr->attrib.mfrag;
1115 fragnum = pfhdr->attrib.frag_num;
1116
1117 psta_addr = pfhdr->attrib.ta;
1118 psta = rtw_get_stainfo(pstapriv, psta_addr);
1119 if (!psta) {
1120 u8 type = GetFrameType(pfhdr->rx_data);
1121
1122 if (type != WIFI_DATA_TYPE) {
1123 psta = rtw_get_bcmc_stainfo(padapter);
1124 pdefrag_q = &psta->sta_recvpriv.defrag_q;
1125 } else
1126 pdefrag_q = NULL;
1127 } else
1128 pdefrag_q = &psta->sta_recvpriv.defrag_q;
1129
1130 if ((ismfrag == 0) && (fragnum == 0))
1131 prtnframe = precv_frame;/* isn't a fragment frame */
1132
1133 if (ismfrag == 1) {
1134 /* 0~(n-1) fragment frame */
1135 /* enqueue to defraf_g */
1136 if (pdefrag_q) {
1137 if (fragnum == 0)
1138 /* the first fragment */
1139 if (!list_empty(&pdefrag_q->queue))
1140 /* free current defrag_q */
1141 rtw_free_recvframe_queue(pdefrag_q, pfree_recv_queue);
1142
1143
1144 /* Then enqueue the 0~(n-1) fragment into the defrag_q */
1145
1146 /* spin_lock(&pdefrag_q->lock); */
1147 phead = get_list_head(pdefrag_q);
1148 list_add_tail(&pfhdr->list, phead);
1149 /* spin_unlock(&pdefrag_q->lock); */
1150
1151 prtnframe = NULL;
1152
1153 } else {
1154 /* can't find this ta's defrag_queue, so free this recv_frame */
1155 rtw_free_recvframe(precv_frame, pfree_recv_queue);
1156 prtnframe = NULL;
1157 }
1158
1159 }
1160
1161 if ((ismfrag == 0) && (fragnum != 0)) {
1162 /* the last fragment frame */
1163 /* enqueue the last fragment */
1164 if (pdefrag_q) {
1165 /* spin_lock(&pdefrag_q->lock); */
1166 phead = get_list_head(pdefrag_q);
1167 list_add_tail(&pfhdr->list, phead);
1168 /* spin_unlock(&pdefrag_q->lock); */
1169
1170 /* call recvframe_defrag to defrag */
1171 precv_frame = recvframe_defrag(padapter, pdefrag_q);
1172 prtnframe = precv_frame;
1173
1174 } else {
1175 /* can't find this ta's defrag_queue, so free this recv_frame */
1176 rtw_free_recvframe(precv_frame, pfree_recv_queue);
1177 prtnframe = NULL;
1178 }
1179
1180 }
1181
1182
1183 if ((prtnframe) && (prtnframe->u.hdr.attrib.privacy)) {
1184 /* after defrag we must check tkip mic code */
1185 if (recvframe_chkmic(padapter, prtnframe) == _FAIL) {
1186 rtw_free_recvframe(prtnframe, pfree_recv_queue);
1187 prtnframe = NULL;
1188 }
1189 }
1190 return prtnframe;
1191 }
1192
validate_recv_mgnt_frame(struct adapter * padapter,union recv_frame * precv_frame)1193 static signed int validate_recv_mgnt_frame(struct adapter *padapter, union recv_frame *precv_frame)
1194 {
1195 /* struct mlme_priv *pmlmepriv = &adapter->mlmepriv; */
1196
1197 precv_frame = recvframe_chk_defrag(padapter, precv_frame);
1198 if (!precv_frame)
1199 return _SUCCESS;
1200
1201 {
1202 /* for rx pkt statistics */
1203 struct sta_info *psta = rtw_get_stainfo(&padapter->stapriv, GetAddr2Ptr(precv_frame->u.hdr.rx_data));
1204
1205 if (psta) {
1206 psta->sta_stats.rx_mgnt_pkts++;
1207 if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_BEACON)
1208 psta->sta_stats.rx_beacon_pkts++;
1209 else if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_PROBEREQ)
1210 psta->sta_stats.rx_probereq_pkts++;
1211 else if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_PROBERSP) {
1212 if (!memcmp(padapter->eeprompriv.mac_addr, GetAddr1Ptr(precv_frame->u.hdr.rx_data), ETH_ALEN))
1213 psta->sta_stats.rx_probersp_pkts++;
1214 else if (is_broadcast_mac_addr(GetAddr1Ptr(precv_frame->u.hdr.rx_data)) ||
1215 is_multicast_mac_addr(GetAddr1Ptr(precv_frame->u.hdr.rx_data)))
1216 psta->sta_stats.rx_probersp_bm_pkts++;
1217 else
1218 psta->sta_stats.rx_probersp_uo_pkts++;
1219 }
1220 }
1221 }
1222
1223 mgt_dispatcher(padapter, precv_frame);
1224
1225 return _SUCCESS;
1226
1227 }
1228
validate_recv_data_frame(struct adapter * adapter,union recv_frame * precv_frame)1229 static signed int validate_recv_data_frame(struct adapter *adapter, union recv_frame *precv_frame)
1230 {
1231 u8 bretry;
1232 u8 *psa, *pda, *pbssid;
1233 struct sta_info *psta = NULL;
1234 u8 *ptr = precv_frame->u.hdr.rx_data;
1235 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
1236 struct security_priv *psecuritypriv = &adapter->securitypriv;
1237 signed int ret = _SUCCESS;
1238
1239 bretry = GetRetry(ptr);
1240 pda = get_da(ptr);
1241 psa = get_sa(ptr);
1242 pbssid = get_hdr_bssid(ptr);
1243
1244 if (!pbssid) {
1245 ret = _FAIL;
1246 goto exit;
1247 }
1248
1249 memcpy(pattrib->dst, pda, ETH_ALEN);
1250 memcpy(pattrib->src, psa, ETH_ALEN);
1251
1252 memcpy(pattrib->bssid, pbssid, ETH_ALEN);
1253
1254 switch (pattrib->to_fr_ds) {
1255 case 0:
1256 memcpy(pattrib->ra, pda, ETH_ALEN);
1257 memcpy(pattrib->ta, psa, ETH_ALEN);
1258 ret = sta2sta_data_frame(adapter, precv_frame, &psta);
1259 break;
1260
1261 case 1:
1262 memcpy(pattrib->ra, pda, ETH_ALEN);
1263 memcpy(pattrib->ta, pbssid, ETH_ALEN);
1264 ret = ap2sta_data_frame(adapter, precv_frame, &psta);
1265 break;
1266
1267 case 2:
1268 memcpy(pattrib->ra, pbssid, ETH_ALEN);
1269 memcpy(pattrib->ta, psa, ETH_ALEN);
1270 ret = sta2ap_data_frame(adapter, precv_frame, &psta);
1271 break;
1272
1273 case 3:
1274 memcpy(pattrib->ra, GetAddr1Ptr(ptr), ETH_ALEN);
1275 memcpy(pattrib->ta, GetAddr2Ptr(ptr), ETH_ALEN);
1276 ret = _FAIL;
1277 break;
1278
1279 default:
1280 ret = _FAIL;
1281 break;
1282
1283 }
1284
1285 if (ret == _FAIL) {
1286 goto exit;
1287 } else if (ret == RTW_RX_HANDLED) {
1288 goto exit;
1289 }
1290
1291
1292 if (!psta) {
1293 ret = _FAIL;
1294 goto exit;
1295 }
1296
1297 /* psta->rssi = prxcmd->rssi; */
1298 /* psta->signal_quality = prxcmd->sq; */
1299 precv_frame->u.hdr.psta = psta;
1300
1301
1302 pattrib->amsdu = 0;
1303 pattrib->ack_policy = 0;
1304 /* parsing QC field */
1305 if (pattrib->qos == 1) {
1306 pattrib->priority = GetPriority((ptr + 24));
1307 pattrib->ack_policy = GetAckpolicy((ptr + 24));
1308 pattrib->amsdu = GetAMsdu((ptr + 24));
1309 pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 32 : 26;
1310
1311 if (pattrib->priority != 0 && pattrib->priority != 3)
1312 adapter->recvpriv.bIsAnyNonBEPkts = true;
1313
1314 } else {
1315 pattrib->priority = 0;
1316 pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 30 : 24;
1317 }
1318
1319
1320 if (pattrib->order)/* HT-CTRL 11n */
1321 pattrib->hdrlen += 4;
1322
1323 precv_frame->u.hdr.preorder_ctrl = &psta->recvreorder_ctrl[pattrib->priority];
1324
1325 /* decache, drop duplicate recv packets */
1326 if (recv_decache(precv_frame, bretry, &psta->sta_recvpriv.rxcache) == _FAIL) {
1327 ret = _FAIL;
1328 goto exit;
1329 }
1330
1331 if (pattrib->privacy) {
1332 GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, is_multicast_ether_addr(pattrib->ra));
1333
1334 SET_ICE_IV_LEN(pattrib->iv_len, pattrib->icv_len, pattrib->encrypt);
1335 } else {
1336 pattrib->encrypt = 0;
1337 pattrib->iv_len = pattrib->icv_len = 0;
1338 }
1339
1340 exit:
1341 return ret;
1342 }
1343
validate_80211w_mgmt(struct adapter * adapter,union recv_frame * precv_frame)1344 static signed int validate_80211w_mgmt(struct adapter *adapter, union recv_frame *precv_frame)
1345 {
1346 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
1347 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
1348 u8 *ptr = precv_frame->u.hdr.rx_data;
1349 u8 subtype;
1350
1351 subtype = GetFrameSubType(ptr); /* bit(7)~bit(2) */
1352
1353 /* only support station mode */
1354 if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) && check_fwstate(pmlmepriv, _FW_LINKED) &&
1355 adapter->securitypriv.binstallBIPkey == true) {
1356 /* unicast management frame decrypt */
1357 if (pattrib->privacy && !(is_multicast_ether_addr(GetAddr1Ptr(ptr))) &&
1358 (subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC || subtype == WIFI_ACTION)) {
1359 u8 *mgmt_DATA;
1360 u32 data_len = 0;
1361
1362 pattrib->bdecrypted = 0;
1363 pattrib->encrypt = _AES_;
1364 pattrib->hdrlen = sizeof(struct ieee80211_hdr_3addr);
1365 /* set iv and icv length */
1366 SET_ICE_IV_LEN(pattrib->iv_len, pattrib->icv_len, pattrib->encrypt);
1367 memcpy(pattrib->ra, GetAddr1Ptr(ptr), ETH_ALEN);
1368 memcpy(pattrib->ta, GetAddr2Ptr(ptr), ETH_ALEN);
1369 /* actual management data frame body */
1370 data_len = pattrib->pkt_len - pattrib->hdrlen - pattrib->iv_len - pattrib->icv_len;
1371 mgmt_DATA = rtw_zmalloc(data_len);
1372 if (!mgmt_DATA)
1373 goto validate_80211w_fail;
1374 precv_frame = decryptor(adapter, precv_frame);
1375 /* save actual management data frame body */
1376 memcpy(mgmt_DATA, ptr+pattrib->hdrlen+pattrib->iv_len, data_len);
1377 /* overwrite the iv field */
1378 memcpy(ptr+pattrib->hdrlen, mgmt_DATA, data_len);
1379 /* remove the iv and icv length */
1380 pattrib->pkt_len = pattrib->pkt_len - pattrib->iv_len - pattrib->icv_len;
1381 kfree(mgmt_DATA);
1382 if (!precv_frame)
1383 goto validate_80211w_fail;
1384 } else if (is_multicast_ether_addr(GetAddr1Ptr(ptr)) &&
1385 (subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC)) {
1386 signed int BIP_ret = _SUCCESS;
1387 /* verify BIP MME IE of broadcast/multicast de-auth/disassoc packet */
1388 BIP_ret = rtw_BIP_verify(adapter, (u8 *)precv_frame);
1389 if (BIP_ret == _FAIL) {
1390 goto validate_80211w_fail;
1391 } else if (BIP_ret == RTW_RX_HANDLED) {
1392 /* issue sa query request */
1393 issue_action_SA_Query(adapter, NULL, 0, 0);
1394 goto validate_80211w_fail;
1395 }
1396 } else { /* 802.11w protect */
1397 if (subtype == WIFI_ACTION) {
1398 /* according 802.11-2012 standard, these five types are not robust types */
1399 if (ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_PUBLIC &&
1400 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_HT &&
1401 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_UNPROTECTED_WNM &&
1402 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_SELF_PROTECTED &&
1403 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_P2P) {
1404 goto validate_80211w_fail;
1405 }
1406 } else if (subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC) {
1407 /* issue sa query request */
1408 issue_action_SA_Query(adapter, NULL, 0, 0);
1409 goto validate_80211w_fail;
1410 }
1411 }
1412 }
1413 return _SUCCESS;
1414
1415 validate_80211w_fail:
1416 return _FAIL;
1417
1418 }
1419
validate_recv_frame(struct adapter * adapter,union recv_frame * precv_frame)1420 static signed int validate_recv_frame(struct adapter *adapter, union recv_frame *precv_frame)
1421 {
1422 /* shall check frame subtype, to / from ds, da, bssid */
1423
1424 /* then call check if rx seq/frag. duplicated. */
1425
1426 u8 type;
1427 u8 subtype;
1428 signed int retval = _SUCCESS;
1429 u8 bDumpRxPkt;
1430
1431 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
1432
1433 u8 *ptr = precv_frame->u.hdr.rx_data;
1434 u8 ver = (unsigned char) (*ptr)&0x3;
1435
1436 /* add version chk */
1437 if (ver != 0) {
1438 retval = _FAIL;
1439 goto exit;
1440 }
1441
1442 type = GetFrameType(ptr);
1443 subtype = GetFrameSubType(ptr); /* bit(7)~bit(2) */
1444
1445 pattrib->to_fr_ds = get_tofr_ds(ptr);
1446
1447 pattrib->frag_num = GetFragNum(ptr);
1448 pattrib->seq_num = GetSequence(ptr);
1449
1450 pattrib->pw_save = GetPwrMgt(ptr);
1451 pattrib->mfrag = GetMFrag(ptr);
1452 pattrib->mdata = GetMData(ptr);
1453 pattrib->privacy = GetPrivacy(ptr);
1454 pattrib->order = GetOrder(ptr);
1455 rtw_hal_get_def_var(adapter, HAL_DEF_DBG_DUMP_RXPKT, &(bDumpRxPkt));
1456
1457 switch (type) {
1458 case WIFI_MGT_TYPE: /* mgnt */
1459 if (validate_80211w_mgmt(adapter, precv_frame) == _FAIL) {
1460 retval = _FAIL;
1461 break;
1462 }
1463
1464 retval = validate_recv_mgnt_frame(adapter, precv_frame);
1465 retval = _FAIL; /* only data frame return _SUCCESS */
1466 break;
1467 case WIFI_CTRL_TYPE: /* ctrl */
1468 retval = validate_recv_ctrl_frame(adapter, precv_frame);
1469 retval = _FAIL; /* only data frame return _SUCCESS */
1470 break;
1471 case WIFI_DATA_TYPE: /* data */
1472 pattrib->qos = (subtype & BIT(7)) ? 1:0;
1473 retval = validate_recv_data_frame(adapter, precv_frame);
1474 if (retval == _FAIL) {
1475 struct recv_priv *precvpriv = &adapter->recvpriv;
1476
1477 precvpriv->rx_drop++;
1478 } else if (retval == _SUCCESS) {
1479 #ifdef DBG_RX_DUMP_EAP
1480 u8 bDumpRxPkt;
1481 u16 eth_type;
1482
1483 /* dump eapol */
1484 rtw_hal_get_def_var(adapter, HAL_DEF_DBG_DUMP_RXPKT, &(bDumpRxPkt));
1485 /* get ether_type */
1486 memcpy(ð_type, ptr + pattrib->hdrlen + pattrib->iv_len + LLC_HEADER_LENGTH, 2);
1487 eth_type = ntohs((unsigned short) eth_type);
1488 #endif
1489 }
1490 break;
1491 default:
1492 retval = _FAIL;
1493 break;
1494 }
1495
1496 exit:
1497 return retval;
1498 }
1499
1500 /* remove the wlanhdr and add the eth_hdr */
wlanhdr_to_ethhdr(union recv_frame * precvframe)1501 static signed int wlanhdr_to_ethhdr(union recv_frame *precvframe)
1502 {
1503 signed int rmv_len;
1504 u16 eth_type, len;
1505 u8 bsnaphdr;
1506 u8 *psnap_type;
1507 struct ieee80211_snap_hdr *psnap;
1508 __be16 be_tmp;
1509 struct adapter *adapter = precvframe->u.hdr.adapter;
1510 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
1511 u8 *ptr = precvframe->u.hdr.rx_data; /* point to frame_ctrl field */
1512 struct rx_pkt_attrib *pattrib = &precvframe->u.hdr.attrib;
1513
1514 if (pattrib->encrypt)
1515 recvframe_pull_tail(precvframe, pattrib->icv_len);
1516
1517 psnap = (struct ieee80211_snap_hdr *)(ptr+pattrib->hdrlen + pattrib->iv_len);
1518 psnap_type = ptr+pattrib->hdrlen + pattrib->iv_len+SNAP_SIZE;
1519 /* convert hdr + possible LLC headers into Ethernet header */
1520 /* eth_type = (psnap_type[0] << 8) | psnap_type[1]; */
1521 if ((!memcmp(psnap, rfc1042_header, SNAP_SIZE) &&
1522 (memcmp(psnap_type, SNAP_ETH_TYPE_IPX, 2)) &&
1523 (memcmp(psnap_type, SNAP_ETH_TYPE_APPLETALK_AARP, 2))) ||
1524 /* eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) || */
1525 !memcmp(psnap, bridge_tunnel_header, SNAP_SIZE)) {
1526 /* remove RFC1042 or Bridge-Tunnel encapsulation and replace EtherType */
1527 bsnaphdr = true;
1528 } else
1529 /* Leave Ethernet header part of hdr and full payload */
1530 bsnaphdr = false;
1531
1532 rmv_len = pattrib->hdrlen + pattrib->iv_len + (bsnaphdr?SNAP_SIZE:0);
1533 len = precvframe->u.hdr.len - rmv_len;
1534
1535 memcpy(&be_tmp, ptr+rmv_len, 2);
1536 eth_type = ntohs(be_tmp); /* pattrib->ether_type */
1537 pattrib->eth_type = eth_type;
1538
1539 if ((check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)) {
1540 ptr += rmv_len;
1541 *ptr = 0x87;
1542 *(ptr+1) = 0x12;
1543
1544 eth_type = 0x8712;
1545 /* append rx status for mp test packets */
1546 ptr = recvframe_pull(precvframe, (rmv_len-sizeof(struct ethhdr)+2)-24);
1547 if (!ptr)
1548 return _FAIL;
1549 memcpy(ptr, get_rxmem(precvframe), 24);
1550 ptr += 24;
1551 } else {
1552 ptr = recvframe_pull(precvframe, (rmv_len-sizeof(struct ethhdr) + (bsnaphdr?2:0)));
1553 if (!ptr)
1554 return _FAIL;
1555 }
1556
1557 memcpy(ptr, pattrib->dst, ETH_ALEN);
1558 memcpy(ptr+ETH_ALEN, pattrib->src, ETH_ALEN);
1559
1560 if (!bsnaphdr) {
1561 be_tmp = htons(len);
1562 memcpy(ptr+12, &be_tmp, 2);
1563 }
1564
1565 return _SUCCESS;
1566 }
1567
amsdu_to_msdu(struct adapter * padapter,union recv_frame * prframe)1568 static int amsdu_to_msdu(struct adapter *padapter, union recv_frame *prframe)
1569 {
1570 int a_len, padding_len;
1571 u16 nSubframe_Length;
1572 u8 nr_subframes, i;
1573 u8 *pdata;
1574 struct sk_buff *sub_pkt, *subframes[MAX_SUBFRAME_COUNT];
1575 struct recv_priv *precvpriv = &padapter->recvpriv;
1576 struct __queue *pfree_recv_queue = &(precvpriv->free_recv_queue);
1577
1578 nr_subframes = 0;
1579
1580 recvframe_pull(prframe, prframe->u.hdr.attrib.hdrlen);
1581
1582 if (prframe->u.hdr.attrib.iv_len > 0)
1583 recvframe_pull(prframe, prframe->u.hdr.attrib.iv_len);
1584
1585 a_len = prframe->u.hdr.len;
1586
1587 pdata = prframe->u.hdr.rx_data;
1588
1589 while (a_len > ETH_HLEN) {
1590
1591 /* Offset 12 denote 2 mac address */
1592 nSubframe_Length = get_unaligned_be16(pdata + 12);
1593
1594 if (a_len < ETH_HLEN + nSubframe_Length)
1595 break;
1596
1597 sub_pkt = rtw_os_alloc_msdu_pkt(prframe, nSubframe_Length, pdata);
1598 if (!sub_pkt)
1599 break;
1600
1601 /* move the data point to data content */
1602 pdata += ETH_HLEN;
1603 a_len -= ETH_HLEN;
1604
1605 subframes[nr_subframes++] = sub_pkt;
1606
1607 if (nr_subframes >= MAX_SUBFRAME_COUNT)
1608 break;
1609
1610 pdata += nSubframe_Length;
1611 a_len -= nSubframe_Length;
1612 if (a_len != 0) {
1613 padding_len = 4 - ((nSubframe_Length + ETH_HLEN) & (4-1));
1614 if (padding_len == 4)
1615 padding_len = 0;
1616
1617 if (a_len < padding_len)
1618 break;
1619
1620 pdata += padding_len;
1621 a_len -= padding_len;
1622 }
1623 }
1624
1625 for (i = 0; i < nr_subframes; i++) {
1626 sub_pkt = subframes[i];
1627
1628 /* Indicate the packets to upper layer */
1629 if (sub_pkt)
1630 rtw_os_recv_indicate_pkt(padapter, sub_pkt, &prframe->u.hdr.attrib);
1631 }
1632
1633 prframe->u.hdr.len = 0;
1634 rtw_free_recvframe(prframe, pfree_recv_queue);/* free this recv_frame */
1635
1636 return _SUCCESS;
1637 }
1638
check_indicate_seq(struct recv_reorder_ctrl * preorder_ctrl,u16 seq_num)1639 static int check_indicate_seq(struct recv_reorder_ctrl *preorder_ctrl, u16 seq_num)
1640 {
1641 struct adapter *padapter = preorder_ctrl->padapter;
1642 struct dvobj_priv *psdpriv = padapter->dvobj;
1643 struct debug_priv *pdbgpriv = &psdpriv->drv_dbg;
1644 u8 wsize = preorder_ctrl->wsize_b;
1645 u16 wend = (preorder_ctrl->indicate_seq + wsize - 1) & 0xFFF;/* 4096; */
1646
1647 /* Rx Reorder initialize condition. */
1648 if (preorder_ctrl->indicate_seq == 0xFFFF)
1649 preorder_ctrl->indicate_seq = seq_num;
1650
1651 /* Drop out the packet which SeqNum is smaller than WinStart */
1652 if (SN_LESS(seq_num, preorder_ctrl->indicate_seq))
1653 return false;
1654
1655 /* */
1656 /* Sliding window manipulation. Conditions includes: */
1657 /* 1. Incoming SeqNum is equal to WinStart =>Window shift 1 */
1658 /* 2. Incoming SeqNum is larger than the WinEnd => Window shift N */
1659 /* */
1660 if (SN_EQUAL(seq_num, preorder_ctrl->indicate_seq)) {
1661 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF;
1662
1663 } else if (SN_LESS(wend, seq_num)) {
1664 /* boundary situation, when seq_num cross 0xFFF */
1665 if (seq_num >= (wsize - 1))
1666 preorder_ctrl->indicate_seq = seq_num + 1 - wsize;
1667 else
1668 preorder_ctrl->indicate_seq = 0xFFF - (wsize - (seq_num + 1)) + 1;
1669 pdbgpriv->dbg_rx_ampdu_window_shift_cnt++;
1670 }
1671
1672 return true;
1673 }
1674
enqueue_reorder_recvframe(struct recv_reorder_ctrl * preorder_ctrl,union recv_frame * prframe)1675 static int enqueue_reorder_recvframe(struct recv_reorder_ctrl *preorder_ctrl, union recv_frame *prframe)
1676 {
1677 struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib;
1678 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
1679 struct list_head *phead, *plist;
1680 union recv_frame *pnextrframe;
1681 struct rx_pkt_attrib *pnextattrib;
1682
1683 /* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */
1684 /* spin_lock(&ppending_recvframe_queue->lock); */
1685
1686
1687 phead = get_list_head(ppending_recvframe_queue);
1688 plist = get_next(phead);
1689
1690 while (phead != plist) {
1691 pnextrframe = (union recv_frame *)plist;
1692 pnextattrib = &pnextrframe->u.hdr.attrib;
1693
1694 if (SN_LESS(pnextattrib->seq_num, pattrib->seq_num))
1695 plist = get_next(plist);
1696 else if (SN_EQUAL(pnextattrib->seq_num, pattrib->seq_num))
1697 /* Duplicate entry is found!! Do not insert current entry. */
1698 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
1699 return false;
1700 else
1701 break;
1702
1703 }
1704
1705
1706 /* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */
1707 /* spin_lock(&ppending_recvframe_queue->lock); */
1708
1709 list_del_init(&(prframe->u.hdr.list));
1710
1711 list_add_tail(&(prframe->u.hdr.list), plist);
1712
1713 /* spin_unlock(&ppending_recvframe_queue->lock); */
1714 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
1715
1716 return true;
1717
1718 }
1719
recv_indicatepkts_pkt_loss_cnt(struct debug_priv * pdbgpriv,u64 prev_seq,u64 current_seq)1720 static void recv_indicatepkts_pkt_loss_cnt(struct debug_priv *pdbgpriv, u64 prev_seq, u64 current_seq)
1721 {
1722 if (current_seq < prev_seq)
1723 pdbgpriv->dbg_rx_ampdu_loss_count += (4096 + current_seq - prev_seq);
1724 else
1725 pdbgpriv->dbg_rx_ampdu_loss_count += (current_seq - prev_seq);
1726
1727 }
1728
recv_indicatepkts_in_order(struct adapter * padapter,struct recv_reorder_ctrl * preorder_ctrl,int bforced)1729 static int recv_indicatepkts_in_order(struct adapter *padapter, struct recv_reorder_ctrl *preorder_ctrl, int bforced)
1730 {
1731 struct list_head *phead, *plist;
1732 union recv_frame *prframe;
1733 struct rx_pkt_attrib *pattrib;
1734 /* u8 index = 0; */
1735 int bPktInBuf = false;
1736 struct recv_priv *precvpriv = &padapter->recvpriv;
1737 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
1738 struct dvobj_priv *psdpriv = padapter->dvobj;
1739 struct debug_priv *pdbgpriv = &psdpriv->drv_dbg;
1740
1741 /* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */
1742 /* spin_lock(&ppending_recvframe_queue->lock); */
1743
1744 phead = get_list_head(ppending_recvframe_queue);
1745 plist = get_next(phead);
1746
1747 /* Handling some condition for forced indicate case. */
1748 if (bforced == true) {
1749 pdbgpriv->dbg_rx_ampdu_forced_indicate_count++;
1750 if (list_empty(phead)) {
1751 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
1752 /* spin_unlock(&ppending_recvframe_queue->lock); */
1753 return true;
1754 }
1755
1756 prframe = (union recv_frame *)plist;
1757 pattrib = &prframe->u.hdr.attrib;
1758
1759 recv_indicatepkts_pkt_loss_cnt(pdbgpriv, preorder_ctrl->indicate_seq, pattrib->seq_num);
1760 preorder_ctrl->indicate_seq = pattrib->seq_num;
1761
1762 }
1763
1764 /* Prepare indication list and indication. */
1765 /* Check if there is any packet need indicate. */
1766 while (!list_empty(phead)) {
1767
1768 prframe = (union recv_frame *)plist;
1769 pattrib = &prframe->u.hdr.attrib;
1770
1771 if (!SN_LESS(preorder_ctrl->indicate_seq, pattrib->seq_num)) {
1772 plist = get_next(plist);
1773 list_del_init(&(prframe->u.hdr.list));
1774
1775 if (SN_EQUAL(preorder_ctrl->indicate_seq, pattrib->seq_num))
1776 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF;
1777
1778 /* Set this as a lock to make sure that only one thread is indicating packet. */
1779 /* pTS->RxIndicateState = RXTS_INDICATE_PROCESSING; */
1780
1781 /* Indicate packets */
1782
1783 /* indicate this recv_frame */
1784 if (!pattrib->amsdu) {
1785 if ((padapter->bDriverStopped == false) &&
1786 (padapter->bSurpriseRemoved == false))
1787 rtw_recv_indicatepkt(padapter, prframe);/* indicate this recv_frame */
1788
1789 } else if (pattrib->amsdu == 1) {
1790 if (amsdu_to_msdu(padapter, prframe) != _SUCCESS)
1791 rtw_free_recvframe(prframe, &precvpriv->free_recv_queue);
1792
1793 } else {
1794 /* error condition; */
1795 }
1796
1797
1798 /* Update local variables. */
1799 bPktInBuf = false;
1800
1801 } else {
1802 bPktInBuf = true;
1803 break;
1804 }
1805
1806 }
1807
1808 /* spin_unlock(&ppending_recvframe_queue->lock); */
1809 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
1810
1811 return bPktInBuf;
1812 }
1813
recv_indicatepkt_reorder(struct adapter * padapter,union recv_frame * prframe)1814 static int recv_indicatepkt_reorder(struct adapter *padapter, union recv_frame *prframe)
1815 {
1816 int retval = _SUCCESS;
1817 struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib;
1818 struct recv_reorder_ctrl *preorder_ctrl = prframe->u.hdr.preorder_ctrl;
1819 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
1820 struct dvobj_priv *psdpriv = padapter->dvobj;
1821 struct debug_priv *pdbgpriv = &psdpriv->drv_dbg;
1822
1823 if (!pattrib->amsdu) {
1824 /* s1. */
1825 wlanhdr_to_ethhdr(prframe);
1826
1827 if (pattrib->qos != 1) {
1828 if ((padapter->bDriverStopped == false) &&
1829 (padapter->bSurpriseRemoved == false)) {
1830 rtw_recv_indicatepkt(padapter, prframe);
1831 return _SUCCESS;
1832
1833 }
1834
1835 return _FAIL;
1836
1837 }
1838
1839 if (preorder_ctrl->enable == false) {
1840 /* indicate this recv_frame */
1841 preorder_ctrl->indicate_seq = pattrib->seq_num;
1842
1843 rtw_recv_indicatepkt(padapter, prframe);
1844
1845 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096;
1846
1847 return _SUCCESS;
1848 }
1849 } else if (pattrib->amsdu == 1) { /* temp filter -> means didn't support A-MSDUs in a A-MPDU */
1850 if (preorder_ctrl->enable == false) {
1851 preorder_ctrl->indicate_seq = pattrib->seq_num;
1852
1853 retval = amsdu_to_msdu(padapter, prframe);
1854
1855 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096;
1856
1857 if (retval != _SUCCESS) {
1858 }
1859
1860 return retval;
1861 }
1862 }
1863
1864 spin_lock_bh(&ppending_recvframe_queue->lock);
1865
1866 /* s2. check if winstart_b(indicate_seq) needs to been updated */
1867 if (!check_indicate_seq(preorder_ctrl, pattrib->seq_num)) {
1868 pdbgpriv->dbg_rx_ampdu_drop_count++;
1869 goto _err_exit;
1870 }
1871
1872
1873 /* s3. Insert all packet into Reorder Queue to maintain its ordering. */
1874 if (!enqueue_reorder_recvframe(preorder_ctrl, prframe)) {
1875 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
1876 /* return _FAIL; */
1877 goto _err_exit;
1878 }
1879
1880
1881 /* s4. */
1882 /* Indication process. */
1883 /* After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets */
1884 /* with the SeqNum smaller than latest WinStart and buffer other packets. */
1885 /* */
1886 /* For Rx Reorder condition: */
1887 /* 1. All packets with SeqNum smaller than WinStart => Indicate */
1888 /* 2. All packets with SeqNum larger than or equal to WinStart => Buffer it. */
1889 /* */
1890
1891 /* recv_indicatepkts_in_order(padapter, preorder_ctrl, true); */
1892 if (recv_indicatepkts_in_order(padapter, preorder_ctrl, false) == true) {
1893 _set_timer(&preorder_ctrl->reordering_ctrl_timer, REORDER_WAIT_TIME);
1894 spin_unlock_bh(&ppending_recvframe_queue->lock);
1895 } else {
1896 spin_unlock_bh(&ppending_recvframe_queue->lock);
1897 del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
1898 }
1899
1900 return _SUCCESS;
1901
1902 _err_exit:
1903 spin_unlock_bh(&ppending_recvframe_queue->lock);
1904
1905 return _FAIL;
1906 }
1907
1908
rtw_reordering_ctrl_timeout_handler(struct timer_list * t)1909 void rtw_reordering_ctrl_timeout_handler(struct timer_list *t)
1910 {
1911 struct recv_reorder_ctrl *preorder_ctrl =
1912 from_timer(preorder_ctrl, t, reordering_ctrl_timer);
1913 struct adapter *padapter = preorder_ctrl->padapter;
1914 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
1915
1916
1917 if (padapter->bDriverStopped || padapter->bSurpriseRemoved)
1918 return;
1919
1920 spin_lock_bh(&ppending_recvframe_queue->lock);
1921
1922 if (recv_indicatepkts_in_order(padapter, preorder_ctrl, true) == true)
1923 _set_timer(&preorder_ctrl->reordering_ctrl_timer, REORDER_WAIT_TIME);
1924
1925 spin_unlock_bh(&ppending_recvframe_queue->lock);
1926
1927 }
1928
process_recv_indicatepkts(struct adapter * padapter,union recv_frame * prframe)1929 static int process_recv_indicatepkts(struct adapter *padapter, union recv_frame *prframe)
1930 {
1931 int retval = _SUCCESS;
1932 /* struct recv_priv *precvpriv = &padapter->recvpriv; */
1933 /* struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib; */
1934 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
1935 struct ht_priv *phtpriv = &pmlmepriv->htpriv;
1936
1937 if (phtpriv->ht_option == true) { /* B/G/N Mode */
1938 /* prframe->u.hdr.preorder_ctrl = &precvpriv->recvreorder_ctrl[pattrib->priority]; */
1939
1940 if (recv_indicatepkt_reorder(padapter, prframe) != _SUCCESS) { /* including perform A-MPDU Rx Ordering Buffer Control */
1941
1942 if ((padapter->bDriverStopped == false) &&
1943 (padapter->bSurpriseRemoved == false)) {
1944 retval = _FAIL;
1945 return retval;
1946 }
1947 }
1948 } else { /* B/G mode */
1949 retval = wlanhdr_to_ethhdr(prframe);
1950 if (retval != _SUCCESS)
1951 return retval;
1952
1953 if ((padapter->bDriverStopped == false) && (padapter->bSurpriseRemoved == false)) {
1954 /* indicate this recv_frame */
1955 rtw_recv_indicatepkt(padapter, prframe);
1956 } else {
1957 retval = _FAIL;
1958 return retval;
1959 }
1960
1961 }
1962
1963 return retval;
1964
1965 }
1966
recv_func_prehandle(struct adapter * padapter,union recv_frame * rframe)1967 static int recv_func_prehandle(struct adapter *padapter, union recv_frame *rframe)
1968 {
1969 int ret = _SUCCESS;
1970 struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
1971
1972 /* check the frame crtl field and decache */
1973 ret = validate_recv_frame(padapter, rframe);
1974 if (ret != _SUCCESS) {
1975 rtw_free_recvframe(rframe, pfree_recv_queue);/* free this recv_frame */
1976 goto exit;
1977 }
1978
1979 exit:
1980 return ret;
1981 }
1982
recv_func_posthandle(struct adapter * padapter,union recv_frame * prframe)1983 static int recv_func_posthandle(struct adapter *padapter, union recv_frame *prframe)
1984 {
1985 int ret = _SUCCESS;
1986 union recv_frame *orig_prframe = prframe;
1987 struct recv_priv *precvpriv = &padapter->recvpriv;
1988 struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
1989
1990 prframe = decryptor(padapter, prframe);
1991 if (!prframe) {
1992 ret = _FAIL;
1993 goto _recv_data_drop;
1994 }
1995
1996 prframe = recvframe_chk_defrag(padapter, prframe);
1997 if (!prframe)
1998 goto _recv_data_drop;
1999
2000 prframe = portctrl(padapter, prframe);
2001 if (!prframe) {
2002 ret = _FAIL;
2003 goto _recv_data_drop;
2004 }
2005
2006 count_rx_stats(padapter, prframe, NULL);
2007
2008 ret = process_recv_indicatepkts(padapter, prframe);
2009 if (ret != _SUCCESS) {
2010 rtw_free_recvframe(orig_prframe, pfree_recv_queue);/* free this recv_frame */
2011 goto _recv_data_drop;
2012 }
2013
2014 _recv_data_drop:
2015 precvpriv->rx_drop++;
2016 return ret;
2017 }
2018
recv_func(struct adapter * padapter,union recv_frame * rframe)2019 static int recv_func(struct adapter *padapter, union recv_frame *rframe)
2020 {
2021 int ret;
2022 struct rx_pkt_attrib *prxattrib = &rframe->u.hdr.attrib;
2023 struct recv_priv *recvpriv = &padapter->recvpriv;
2024 struct security_priv *psecuritypriv = &padapter->securitypriv;
2025 struct mlme_priv *mlmepriv = &padapter->mlmepriv;
2026
2027 /* check if need to handle uc_swdec_pending_queue*/
2028 if (check_fwstate(mlmepriv, WIFI_STATION_STATE) && psecuritypriv->busetkipkey) {
2029 union recv_frame *pending_frame;
2030 int cnt = 0;
2031
2032 while ((pending_frame = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue))) {
2033 cnt++;
2034 recv_func_posthandle(padapter, pending_frame);
2035 }
2036 }
2037
2038 ret = recv_func_prehandle(padapter, rframe);
2039
2040 if (ret == _SUCCESS) {
2041
2042 /* check if need to enqueue into uc_swdec_pending_queue*/
2043 if (check_fwstate(mlmepriv, WIFI_STATION_STATE) &&
2044 !is_multicast_ether_addr(prxattrib->ra) && prxattrib->encrypt > 0 &&
2045 (prxattrib->bdecrypted == 0 || psecuritypriv->sw_decrypt == true) &&
2046 psecuritypriv->ndisauthtype == Ndis802_11AuthModeWPAPSK &&
2047 !psecuritypriv->busetkipkey) {
2048 rtw_enqueue_recvframe(rframe, &padapter->recvpriv.uc_swdec_pending_queue);
2049
2050 if (recvpriv->free_recvframe_cnt < NR_RECVFRAME/4) {
2051 /* to prevent from recvframe starvation, get recvframe from uc_swdec_pending_queue to free_recvframe_cnt */
2052 rframe = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue);
2053 if (rframe)
2054 goto do_posthandle;
2055 }
2056 goto exit;
2057 }
2058
2059 do_posthandle:
2060 ret = recv_func_posthandle(padapter, rframe);
2061 }
2062
2063 exit:
2064 return ret;
2065 }
2066
2067
rtw_recv_entry(union recv_frame * precvframe)2068 s32 rtw_recv_entry(union recv_frame *precvframe)
2069 {
2070 struct adapter *padapter;
2071 struct recv_priv *precvpriv;
2072 s32 ret = _SUCCESS;
2073
2074 padapter = precvframe->u.hdr.adapter;
2075
2076 precvpriv = &padapter->recvpriv;
2077
2078 ret = recv_func(padapter, precvframe);
2079 if (ret == _FAIL)
2080 goto _recv_entry_drop;
2081
2082 precvpriv->rx_pkts++;
2083
2084 return ret;
2085
2086 _recv_entry_drop:
2087
2088 return ret;
2089 }
2090
rtw_signal_stat_timer_hdl(struct timer_list * t)2091 static void rtw_signal_stat_timer_hdl(struct timer_list *t)
2092 {
2093 struct adapter *adapter =
2094 from_timer(adapter, t, recvpriv.signal_stat_timer);
2095 struct recv_priv *recvpriv = &adapter->recvpriv;
2096
2097 u32 tmp_s, tmp_q;
2098 u8 avg_signal_strength = 0;
2099 u8 avg_signal_qual = 0;
2100 u32 num_signal_strength = 0;
2101 u32 __maybe_unused num_signal_qual = 0;
2102 u8 _alpha = 5; /* this value is based on converging_constant = 5000 and sampling_interval = 1000 */
2103
2104 if (adapter->recvpriv.is_signal_dbg) {
2105 /* update the user specific value, signal_strength_dbg, to signal_strength, rssi */
2106 adapter->recvpriv.signal_strength = adapter->recvpriv.signal_strength_dbg;
2107 adapter->recvpriv.rssi = (s8)translate_percentage_to_dbm((u8)adapter->recvpriv.signal_strength_dbg);
2108 } else {
2109
2110 if (recvpriv->signal_strength_data.update_req == 0) {/* update_req is clear, means we got rx */
2111 avg_signal_strength = recvpriv->signal_strength_data.avg_val;
2112 num_signal_strength = recvpriv->signal_strength_data.total_num;
2113 /* after avg_vals are acquired, we can re-stat the signal values */
2114 recvpriv->signal_strength_data.update_req = 1;
2115 }
2116
2117 if (recvpriv->signal_qual_data.update_req == 0) {/* update_req is clear, means we got rx */
2118 avg_signal_qual = recvpriv->signal_qual_data.avg_val;
2119 num_signal_qual = recvpriv->signal_qual_data.total_num;
2120 /* after avg_vals are acquired, we can re-stat the signal values */
2121 recvpriv->signal_qual_data.update_req = 1;
2122 }
2123
2124 if (num_signal_strength == 0) {
2125 if (rtw_get_on_cur_ch_time(adapter) == 0 ||
2126 jiffies_to_msecs(jiffies - rtw_get_on_cur_ch_time(adapter)) < 2 * adapter->mlmeextpriv.mlmext_info.bcn_interval
2127 ) {
2128 goto set_timer;
2129 }
2130 }
2131
2132 if (check_fwstate(&adapter->mlmepriv, _FW_UNDER_SURVEY) == true ||
2133 check_fwstate(&adapter->mlmepriv, _FW_LINKED) == false
2134 ) {
2135 goto set_timer;
2136 }
2137
2138 /* update value of signal_strength, rssi, signal_qual */
2139 tmp_s = (avg_signal_strength+(_alpha-1)*recvpriv->signal_strength);
2140 if (tmp_s % _alpha)
2141 tmp_s = tmp_s/_alpha + 1;
2142 else
2143 tmp_s = tmp_s/_alpha;
2144 if (tmp_s > 100)
2145 tmp_s = 100;
2146
2147 tmp_q = (avg_signal_qual+(_alpha-1)*recvpriv->signal_qual);
2148 if (tmp_q % _alpha)
2149 tmp_q = tmp_q/_alpha + 1;
2150 else
2151 tmp_q = tmp_q/_alpha;
2152 if (tmp_q > 100)
2153 tmp_q = 100;
2154
2155 recvpriv->signal_strength = tmp_s;
2156 recvpriv->rssi = (s8)translate_percentage_to_dbm(tmp_s);
2157 recvpriv->signal_qual = tmp_q;
2158 }
2159
2160 set_timer:
2161 rtw_set_signal_stat_timer(recvpriv);
2162
2163 }
2164