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staging: r8188eu: remove rtw_usb_control_msg() macro
[linux-block.git] / drivers / staging / r8188eu / core / rtw_recv.c
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762b759a
LF		 1// SPDX-License-Identifier: GPL-2.0
2/* Copyright(c) 2007 - 2012 Realtek Corporation. */
3
15865124
PP		 4#define _RTW_RECV_C_
5
6#include <osdep_service.h>
7#include <drv_types.h>
8#include <recv_osdep.h>
9#include <mlme_osdep.h>
10#include <ip.h>
11#include <if_ether.h>
12#include <ethernet.h>
13#include <usb_ops.h>
14#include <wifi.h>
15
16static u8 SNAP_ETH_TYPE_IPX[2] = {0x81, 0x37};
17static u8 SNAP_ETH_TYPE_APPLETALK_AARP[2] = {0x80, 0xf3};
18
19/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
20static u8 rtw_bridge_tunnel_header[] = {
21 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8
22};
23
24static u8 rtw_rfc1042_header[] = {
25 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00
26};
27
15865124 28void rtw_signal_stat_timer_hdl(struct timer_list *);
15865124
PP		 29
30void _rtw_init_sta_recv_priv(struct sta_recv_priv *psta_recvpriv)
31{
32
33 memset((u8 *)psta_recvpriv, 0, sizeof (struct sta_recv_priv));
34
35 spin_lock_init(&psta_recvpriv->lock);
36
37 _rtw_init_queue(&psta_recvpriv->defrag_q);
38
39}
40
41int _rtw_init_recv_priv(struct recv_priv *precvpriv, struct adapter *padapter)
42{
43 int i;
44
45 struct recv_frame *precvframe;
46
47 int res = _SUCCESS;
48
49 spin_lock_init(&precvpriv->lock);
50
51 _rtw_init_queue(&precvpriv->free_recv_queue);
52 _rtw_init_queue(&precvpriv->recv_pending_queue);
53 _rtw_init_queue(&precvpriv->uc_swdec_pending_queue);
54
55 precvpriv->adapter = padapter;
56
57 precvpriv->free_recvframe_cnt = NR_RECVFRAME;
58
59 rtw_os_recv_resource_init(precvpriv, padapter);
60
61 precvpriv->pallocated_frame_buf = rtw_zvmalloc(NR_RECVFRAME * sizeof(struct recv_frame) + RXFRAME_ALIGN_SZ);
62
63 if (precvpriv->pallocated_frame_buf == NULL) {
64 res = _FAIL;
65 goto exit;
66 }
67
68 precvpriv->precv_frame_buf = (u8 *)N_BYTE_ALIGMENT((size_t)(precvpriv->pallocated_frame_buf), RXFRAME_ALIGN_SZ);
69
70 precvframe = (struct recv_frame *)precvpriv->precv_frame_buf;
71
72 for (i = 0; i < NR_RECVFRAME; i++) {
73 INIT_LIST_HEAD(&(precvframe->list));
74
75 list_add_tail(&(precvframe->list), &(precvpriv->free_recv_queue.queue));
76
77 res = rtw_os_recv_resource_alloc(padapter, precvframe);
78
79 precvframe->len = 0;
80
81 precvframe->adapter = padapter;
82 precvframe++;
83 }
84 precvpriv->rx_pending_cnt = 1;
85
86 sema_init(&precvpriv->allrxreturnevt, 0);
87
88 res = rtw_hal_init_recv_priv(padapter);
89
15865124 90 timer_setup(&precvpriv->signal_stat_timer, rtw_signal_stat_timer_hdl, 0);
15865124
PP		 91 precvpriv->signal_stat_sampling_interval = 1000; /* ms */
92
93 rtw_set_signal_stat_timer(precvpriv);
94exit:
95
96 return res;
97}
98
99static void rtw_mfree_recv_priv_lock(struct recv_priv *precvpriv)
100{
101 _rtw_spinlock_free(&precvpriv->lock);
102 _rtw_spinlock_free(&precvpriv->free_recv_queue.lock);
103 _rtw_spinlock_free(&precvpriv->recv_pending_queue.lock);
104
105 _rtw_spinlock_free(&precvpriv->free_recv_buf_queue.lock);
106}
107
108void _rtw_free_recv_priv (struct recv_priv *precvpriv)
109{
110 struct adapter *padapter = precvpriv->adapter;
111
112 rtw_free_uc_swdec_pending_queue(padapter);
113
114 rtw_mfree_recv_priv_lock(precvpriv);
115
116 rtw_os_recv_resource_free(precvpriv);
117
118 if (precvpriv->pallocated_frame_buf) {
119 rtw_vmfree(precvpriv->pallocated_frame_buf, NR_RECVFRAME * sizeof(struct recv_frame) + RXFRAME_ALIGN_SZ);
120 }
121
122 rtw_hal_free_recv_priv(padapter);
123
124}
125
126struct recv_frame *_rtw_alloc_recvframe (struct __queue *pfree_recv_queue)
127{
128 struct recv_frame *hdr;
129 struct list_head *plist, *phead;
130 struct adapter *padapter;
131 struct recv_priv *precvpriv;
132
133 if (list_empty(&pfree_recv_queue->queue)) {
134 hdr = NULL;
135 } else {
136 phead = get_list_head(pfree_recv_queue);
137
138 plist = phead->next;
139
140 hdr = container_of(plist, struct recv_frame, list);
141
142 list_del_init(&hdr->list);
143 padapter = hdr->adapter;
144 if (padapter != NULL) {
145 precvpriv = &padapter->recvpriv;
146 if (pfree_recv_queue == &precvpriv->free_recv_queue)
147 precvpriv->free_recvframe_cnt--;
148 }
149 }
150
151 return (struct recv_frame *)hdr;
152}
153
154struct recv_frame *rtw_alloc_recvframe (struct __queue *pfree_recv_queue)
155{
156 struct recv_frame *precvframe;
157
158 spin_lock_bh(&pfree_recv_queue->lock);
159
160 precvframe = _rtw_alloc_recvframe(pfree_recv_queue);
161
162 spin_unlock_bh(&pfree_recv_queue->lock);
163
164 return precvframe;
165}
166
167void rtw_init_recvframe(struct recv_frame *precvframe, struct recv_priv *precvpriv)
168{
169 /* Perry: This can be removed */
170 INIT_LIST_HEAD(&precvframe->list);
171
172 precvframe->len = 0;
173}
174
175int rtw_free_recvframe(struct recv_frame *precvframe, struct __queue *pfree_recv_queue)
176{
177 struct adapter *padapter;
178 struct recv_priv *precvpriv;
179
180 if (!precvframe)
181 return _FAIL;
182 padapter = precvframe->adapter;
183 precvpriv = &padapter->recvpriv;
184 if (precvframe->pkt) {
185 dev_kfree_skb_any(precvframe->pkt);/* free skb by driver */
186 precvframe->pkt = NULL;
187 }
188
189 spin_lock_bh(&pfree_recv_queue->lock);
190
191 list_del_init(&(precvframe->list));
192
193 precvframe->len = 0;
194
195 list_add_tail(&(precvframe->list), get_list_head(pfree_recv_queue));
196
197 if (padapter != NULL) {
198 if (pfree_recv_queue == &precvpriv->free_recv_queue)
199 precvpriv->free_recvframe_cnt++;
200 }
201
202 spin_unlock_bh(&pfree_recv_queue->lock);
203
204 return _SUCCESS;
205}
206
207int _rtw_enqueue_recvframe(struct recv_frame *precvframe, struct __queue *queue)
208{
209 struct adapter *padapter = precvframe->adapter;
210 struct recv_priv *precvpriv = &padapter->recvpriv;
211
212 list_del_init(&(precvframe->list));
213 list_add_tail(&(precvframe->list), get_list_head(queue));
214
215 if (padapter != NULL) {
216 if (queue == &precvpriv->free_recv_queue)
217 precvpriv->free_recvframe_cnt++;
218 }
219
220 return _SUCCESS;
221}
222
223int rtw_enqueue_recvframe(struct recv_frame *precvframe, struct __queue *queue)
224{
225 int ret;
226
227 spin_lock_bh(&queue->lock);
228 ret = _rtw_enqueue_recvframe(precvframe, queue);
229 spin_unlock_bh(&queue->lock);
230
231 return ret;
232}
233
234/*
235caller : defrag ; recvframe_chk_defrag in recv_thread (passive)
236pframequeue: defrag_queue : will be accessed in recv_thread (passive)
237
238using spinlock to protect
239
240*/
241
242void rtw_free_recvframe_queue(struct __queue *pframequeue, struct __queue *pfree_recv_queue)
243{
244 struct recv_frame *hdr;
245 struct list_head *plist, *phead;
246
247 spin_lock(&pframequeue->lock);
248
249 phead = get_list_head(pframequeue);
250 plist = phead->next;
251
252 while (phead != plist) {
253 hdr = container_of(plist, struct recv_frame, list);
254
255 plist = plist->next;
256
257 rtw_free_recvframe((struct recv_frame *)hdr, pfree_recv_queue);
258 }
259
260 spin_unlock(&pframequeue->lock);
261
262}
263
264u32 rtw_free_uc_swdec_pending_queue(struct adapter *adapter)
265{
266 u32 cnt = 0;
267 struct recv_frame *pending_frame;
268 while ((pending_frame = rtw_alloc_recvframe(&adapter->recvpriv.uc_swdec_pending_queue))) {
269 rtw_free_recvframe(pending_frame, &adapter->recvpriv.free_recv_queue);
270 DBG_88E("%s: dequeue uc_swdec_pending_queue\n", __func__);
271 cnt++;
272 }
273
274 return cnt;
275}
276
277int rtw_enqueue_recvbuf_to_head(struct recv_buf *precvbuf, struct __queue *queue)
278{
279 spin_lock_bh(&queue->lock);
280
281 list_del_init(&precvbuf->list);
282 list_add(&precvbuf->list, get_list_head(queue));
283
284 spin_unlock_bh(&queue->lock);
285
286 return _SUCCESS;
287}
288
289int rtw_enqueue_recvbuf(struct recv_buf *precvbuf, struct __queue *queue)
290{
291 unsigned long flags;
292
293 spin_lock_irqsave(&queue->lock, flags);
294
295 list_del_init(&precvbuf->list);
296
297 list_add_tail(&precvbuf->list, get_list_head(queue));
298 spin_unlock_irqrestore(&queue->lock, flags);
299 return _SUCCESS;
300}
301
302struct recv_buf *rtw_dequeue_recvbuf (struct __queue *queue)
303{
304 struct recv_buf *precvbuf;
305 struct list_head *plist, *phead;
306 unsigned long flags;
307
308 spin_lock_irqsave(&queue->lock, flags);
309
310 if (list_empty(&queue->queue)) {
311 precvbuf = NULL;
312 } else {
313 phead = get_list_head(queue);
314
315 plist = phead->next;
316
317 precvbuf = container_of(plist, struct recv_buf, list);
318
319 list_del_init(&precvbuf->list);
320 }
321
322 spin_unlock_irqrestore(&queue->lock, flags);
323
324 return precvbuf;
325}
326
327static int recvframe_chkmic(struct adapter *adapter, struct recv_frame *precvframe)
328{
329 int i, res = _SUCCESS;
330 u32 datalen;
331 u8 miccode[8];
332 u8 bmic_err = false, brpt_micerror = true;
333 u8 *pframe, *payload, *pframemic;
334 u8 *mickey;
335 struct sta_info *stainfo;
336 struct rx_pkt_attrib *prxattrib = &precvframe->attrib;
337 struct security_priv *psecuritypriv = &adapter->securitypriv;
338
339 struct mlme_ext_priv *pmlmeext = &adapter->mlmeextpriv;
340 struct mlme_ext_info *pmlmeinfo = &(pmlmeext->mlmext_info);
341
342 stainfo = rtw_get_stainfo(&adapter->stapriv, &prxattrib->ta[0]);
343
344 if (prxattrib->encrypt == _TKIP_) {
345 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n recvframe_chkmic:prxattrib->encrypt==_TKIP_\n"));
346 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n recvframe_chkmic:da=0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x\n",
347 prxattrib->ra[0], prxattrib->ra[1], prxattrib->ra[2], prxattrib->ra[3], prxattrib->ra[4], prxattrib->ra[5]));
348
349 /* calculate mic code */
350 if (stainfo != NULL) {
351 if (IS_MCAST(prxattrib->ra)) {
352 mickey = &psecuritypriv->dot118021XGrprxmickey[prxattrib->key_index].skey[0];
353
354 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n recvframe_chkmic: bcmc key\n"));
355
356 if (!psecuritypriv) {
357 res = _FAIL;
358 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("\n recvframe_chkmic:didn't install group key!!!!!!!!!!\n"));
359 DBG_88E("\n recvframe_chkmic:didn't install group key!!!!!!!!!!\n");
360 goto exit;
361 }
362 } else {
363 mickey = &stainfo->dot11tkiprxmickey.skey[0];
364 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("\n recvframe_chkmic: unicast key\n"));
365 }
366
367 datalen = precvframe->len-prxattrib->hdrlen-prxattrib->iv_len-prxattrib->icv_len-8;/* icv_len included the mic code */
368 pframe = precvframe->rx_data;
369 payload = pframe+prxattrib->hdrlen+prxattrib->iv_len;
370
371 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n prxattrib->iv_len=%d prxattrib->icv_len=%d\n", prxattrib->iv_len, prxattrib->icv_len));
372 rtw_seccalctkipmic(mickey, pframe, payload, datalen, &miccode[0],
373 (unsigned char)prxattrib->priority); /* care the length of the data */
374
375 pframemic = payload+datalen;
376
377 bmic_err = false;
378
379 for (i = 0; i < 8; i++) {
380 if (miccode[i] != *(pframemic+i)) {
381 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
382 ("recvframe_chkmic:miccode[%d](%02x)!=*(pframemic+%d)(%02x) ",
383 i, miccode[i], i, *(pframemic+i)));
384 bmic_err = true;
385 }
386 }
387
388 if (bmic_err) {
389 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
390 ("\n *(pframemic-8)-*(pframemic-1)=0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x\n",
391 *(pframemic-8), *(pframemic-7), *(pframemic-6),
392 *(pframemic-5), *(pframemic-4), *(pframemic-3),
393 *(pframemic-2), *(pframemic-1)));
394 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
395 ("\n *(pframemic-16)-*(pframemic-9)=0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x\n",
396 *(pframemic-16), *(pframemic-15), *(pframemic-14),
397 *(pframemic-13), *(pframemic-12), *(pframemic-11),
398 *(pframemic-10), *(pframemic-9)));
399 {
400 uint i;
401 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("\n ======demp packet (len=%d)======\n", precvframe->len));
402 for (i = 0; i < precvframe->len; i = i+8) {
403 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x",
404 *(precvframe->rx_data+i), *(precvframe->rx_data+i+1),
405 *(precvframe->rx_data+i+2), *(precvframe->rx_data+i+3),
406 *(precvframe->rx_data+i+4), *(precvframe->rx_data+i+5),
407 *(precvframe->rx_data+i+6), *(precvframe->rx_data+i+7)));
408 }
409 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("\n ====== demp packet end [len=%d]======\n", precvframe->len));
410 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("\n hrdlen=%d,\n", prxattrib->hdrlen));
411 }
412
413 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
414 ("ra=0x%.2x 0x%.2x 0x%.2x 0x%.2x 0x%.2x 0x%.2x psecuritypriv->binstallGrpkey=%d ",
415 prxattrib->ra[0], prxattrib->ra[1], prxattrib->ra[2],
416 prxattrib->ra[3], prxattrib->ra[4], prxattrib->ra[5], psecuritypriv->binstallGrpkey));
417
418 /* double check key_index for some timing issue , */
419 /* cannot compare with psecuritypriv->dot118021XGrpKeyid also cause timing issue */
420 if ((IS_MCAST(prxattrib->ra) == true) && (prxattrib->key_index != pmlmeinfo->key_index))
421 brpt_micerror = false;
422
423 if ((prxattrib->bdecrypted) && (brpt_micerror)) {
424 rtw_handle_tkip_mic_err(adapter, (u8)IS_MCAST(prxattrib->ra));
425 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" mic error :prxattrib->bdecrypted=%d ", prxattrib->bdecrypted));
426 DBG_88E(" mic error :prxattrib->bdecrypted=%d\n", prxattrib->bdecrypted);
427 } else {
428 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" mic error :prxattrib->bdecrypted=%d ", prxattrib->bdecrypted));
429 DBG_88E(" mic error :prxattrib->bdecrypted=%d\n", prxattrib->bdecrypted);
430 }
431 res = _FAIL;
432 } else {
433 /* mic checked ok */
434 if ((!psecuritypriv->bcheck_grpkey) && (IS_MCAST(prxattrib->ra))) {
435 psecuritypriv->bcheck_grpkey = true;
436 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("psecuritypriv->bcheck_grpkey = true"));
437 }
438 }
439 } else {
440 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvframe_chkmic: rtw_get_stainfo==NULL!!!\n"));
441 }
442
443 recvframe_pull_tail(precvframe, 8);
444 }
445
446exit:
447
448 return res;
449}
450
451/* decrypt and set the ivlen, icvlen of the recv_frame */
452static struct recv_frame *decryptor(struct adapter *padapter, struct recv_frame *precv_frame)
453{
454 struct rx_pkt_attrib *prxattrib = &precv_frame->attrib;
455 struct security_priv *psecuritypriv = &padapter->securitypriv;
456 struct recv_frame *return_packet = precv_frame;
457 u32 res = _SUCCESS;
458
459 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("prxstat->decrypted=%x prxattrib->encrypt=0x%03x\n", prxattrib->bdecrypted, prxattrib->encrypt));
460
461 if (prxattrib->encrypt > 0) {
462 u8 *iv = precv_frame->rx_data+prxattrib->hdrlen;
463 prxattrib->key_index = (((iv[3])>>6)&0x3);
464
465 if (prxattrib->key_index > WEP_KEYS) {
466 DBG_88E("prxattrib->key_index(%d)>WEP_KEYS\n", prxattrib->key_index);
467
468 switch (prxattrib->encrypt) {
469 case _WEP40_:
470 case _WEP104_:
471 prxattrib->key_index = psecuritypriv->dot11PrivacyKeyIndex;
472 break;
473 case _TKIP_:
474 case _AES_:
475 default:
476 prxattrib->key_index = psecuritypriv->dot118021XGrpKeyid;
477 break;
478 }
479 }
480 }
481
482 if ((prxattrib->encrypt > 0) && ((prxattrib->bdecrypted == 0) || (psecuritypriv->sw_decrypt))) {
483 psecuritypriv->hw_decrypted = false;
484
485 switch (prxattrib->encrypt) {
486 case _WEP40_:
487 case _WEP104_:
488 rtw_wep_decrypt(padapter, (u8 *)precv_frame);
489 break;
490 case _TKIP_:
491 res = rtw_tkip_decrypt(padapter, (u8 *)precv_frame);
492 break;
493 case _AES_:
494 res = rtw_aes_decrypt(padapter, (u8 *)precv_frame);
495 break;
496 default:
497 break;
498 }
499 } else if (prxattrib->bdecrypted == 1 && prxattrib->encrypt > 0 &&
500 (psecuritypriv->busetkipkey == 1 || prxattrib->encrypt != _TKIP_))
501 psecuritypriv->hw_decrypted = true;
502
503 if (res == _FAIL) {
504 rtw_free_recvframe(return_packet, &padapter->recvpriv.free_recv_queue);
505 return_packet = NULL;
506 } else {
507 prxattrib->bdecrypted = true;
508 }
509
510 return return_packet;
511}
512
513/* set the security information in the recv_frame */
514static struct recv_frame *portctrl(struct adapter *adapter, struct recv_frame *precv_frame)
515{
516 u8 *psta_addr, *ptr;
517 uint auth_alg;
518 struct recv_frame *pfhdr;
519 struct sta_info *psta;
520 struct sta_priv *pstapriv;
521 struct recv_frame *prtnframe;
522 u16 ether_type;
523 u16 eapol_type = 0x888e;/* for Funia BD's WPA issue */
524 struct rx_pkt_attrib *pattrib;
525 __be16 be_tmp;
526
527 pstapriv = &adapter->stapriv;
528
529 auth_alg = adapter->securitypriv.dot11AuthAlgrthm;
530
531 ptr = precv_frame->rx_data;
532 pfhdr = precv_frame;
533 pattrib = &pfhdr->attrib;
534 psta_addr = pattrib->ta;
535
536 prtnframe = NULL;
537
538 psta = rtw_get_stainfo(pstapriv, psta_addr);
539 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
540 ("########portctrl:adapter->securitypriv.dot11AuthAlgrthm=%d\n",
541 adapter->securitypriv.dot11AuthAlgrthm));
542
543 if (auth_alg == 2) {
544 if ((psta != NULL) && (psta->ieee8021x_blocked)) {
545 /* blocked */
546 /* only accept EAPOL frame */
547 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########portctrl:psta->ieee8021x_blocked==1\n"));
548
549 prtnframe = precv_frame;
550
551 /* get ether_type */
552 ptr = ptr+pfhdr->attrib.hdrlen+pfhdr->attrib.iv_len+LLC_HEADER_SIZE;
553 memcpy(&be_tmp, ptr, 2);
554 ether_type = ntohs(be_tmp);
555
556 if (ether_type == eapol_type) {
557 prtnframe = precv_frame;
558 } else {
559 /* free this frame */
560 rtw_free_recvframe(precv_frame, &adapter->recvpriv.free_recv_queue);
561 prtnframe = NULL;
562 }
563 } else {
564 /* allowed */
565 /* check decryption status, and decrypt the frame if needed */
566 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########portctrl:psta->ieee8021x_blocked==0\n"));
567 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("portctrl:precv_frame->hdr.attrib.privacy=%x\n", precv_frame->attrib.privacy));
568
569 if (pattrib->bdecrypted == 0)
570 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("portctrl:prxstat->decrypted=%x\n", pattrib->bdecrypted));
571
572 prtnframe = precv_frame;
573 /* check is the EAPOL frame or not (Rekey) */
574 if (ether_type == eapol_type) {
575 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("########portctrl:ether_type==0x888e\n"));
576 /* check Rekey */
577
578 prtnframe = precv_frame;
579 } else {
580 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########portctrl:ether_type=0x%04x\n", ether_type));
581 }
582 }
583 } else {
584 prtnframe = precv_frame;
585 }
586
587 return prtnframe;
588}
589
590static int recv_decache(struct recv_frame *precv_frame, u8 bretry, struct stainfo_rxcache *prxcache)
591{
592 int tid = precv_frame->attrib.priority;
593
594 u16 seq_ctrl = ((precv_frame->attrib.seq_num&0xffff) << 4) |
595 (precv_frame->attrib.frag_num & 0xf);
596
597 if (tid > 15) {
598 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("recv_decache, (tid>15)! seq_ctrl=0x%x, tid=0x%x\n", seq_ctrl, tid));
599
600 return _FAIL;
601 }
602
603 if (1) {/* if (bretry) */
604 if (seq_ctrl == prxcache->tid_rxseq[tid]) {
605 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("recv_decache, seq_ctrl=0x%x, tid=0x%x, tid_rxseq=0x%x\n", seq_ctrl, tid, prxcache->tid_rxseq[tid]));
606
607 return _FAIL;
608 }
609 }
610
611 prxcache->tid_rxseq[tid] = seq_ctrl;
612
613 return _SUCCESS;
614}
615
616void process_pwrbit_data(struct adapter *padapter, struct recv_frame *precv_frame);
617void process_pwrbit_data(struct adapter *padapter, struct recv_frame *precv_frame)
618{
619#ifdef CONFIG_88EU_AP_MODE
620 unsigned char pwrbit;
621 u8 *ptr = precv_frame->rx_data;
622 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
623 struct sta_priv *pstapriv = &padapter->stapriv;
624 struct sta_info *psta = NULL;
625
626 psta = rtw_get_stainfo(pstapriv, pattrib->src);
627
628 pwrbit = GetPwrMgt(ptr);
629
630 if (psta) {
631 if (pwrbit) {
632 if (!(psta->state & WIFI_SLEEP_STATE))
633 stop_sta_xmit(padapter, psta);
634 } else {
635 if (psta->state & WIFI_SLEEP_STATE)
636 wakeup_sta_to_xmit(padapter, psta);
637 }
638 }
639
640#endif
641}
642
643static void process_wmmps_data(struct adapter *padapter, struct recv_frame *precv_frame)
644{
645#ifdef CONFIG_88EU_AP_MODE
646 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
647 struct sta_priv *pstapriv = &padapter->stapriv;
648 struct sta_info *psta = NULL;
649
650 psta = rtw_get_stainfo(pstapriv, pattrib->src);
651
652 if (!psta)
653 return;
654
655 if (!psta->qos_option)
656 return;
657
658 if (!(psta->qos_info&0xf))
659 return;
660
661 if (psta->state&WIFI_SLEEP_STATE) {
662 u8 wmmps_ac = 0;
663
664 switch (pattrib->priority) {
665 case 1:
666 case 2:
667 wmmps_ac = psta->uapsd_bk&BIT(1);
668 break;
669 case 4:
670 case 5:
671 wmmps_ac = psta->uapsd_vi&BIT(1);
672 break;
673 case 6:
674 case 7:
675 wmmps_ac = psta->uapsd_vo&BIT(1);
676 break;
677 case 0:
678 case 3:
679 default:
680 wmmps_ac = psta->uapsd_be&BIT(1);
681 break;
682 }
683
684 if (wmmps_ac) {
685 if (psta->sleepq_ac_len > 0) {
686 /* process received triggered frame */
687 xmit_delivery_enabled_frames(padapter, psta);
688 } else {
689 /* issue one qos null frame with More data bit = 0 and the EOSP bit set (= 1) */
690 issue_qos_nulldata(padapter, psta->hwaddr, (u16)pattrib->priority, 0, 0);
691 }
692 }
693 }
694
695#endif
696}
697
698static void count_rx_stats(struct adapter *padapter, struct recv_frame *prframe, struct sta_info *sta)
699{
700 int sz;
701 struct sta_info *psta = NULL;
702 struct stainfo_stats *pstats = NULL;
703 struct rx_pkt_attrib *pattrib = &prframe->attrib;
704 struct recv_priv *precvpriv = &padapter->recvpriv;
705
706 sz = get_recvframe_len(prframe);
707 precvpriv->rx_bytes += sz;
708
709 padapter->mlmepriv.LinkDetectInfo.NumRxOkInPeriod++;
710
711 if ((!MacAddr_isBcst(pattrib->dst)) && (!IS_MCAST(pattrib->dst)))
712 padapter->mlmepriv.LinkDetectInfo.NumRxUnicastOkInPeriod++;
713
714 if (sta)
715 psta = sta;
716 else
717 psta = prframe->psta;
718
719 if (psta) {
720 pstats = &psta->sta_stats;
721
722 pstats->rx_data_pkts++;
723 pstats->rx_bytes += sz;
724 }
725}
726
727int sta2sta_data_frame(
728 struct adapter *adapter,
729 struct recv_frame *precv_frame,
730 struct sta_info **psta
731);
732
733int sta2sta_data_frame(struct adapter *adapter, struct recv_frame *precv_frame, struct sta_info **psta)
734{
735 u8 *ptr = precv_frame->rx_data;
736 int ret = _SUCCESS;
737 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
738 struct sta_priv *pstapriv = &adapter->stapriv;
739 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
740 u8 *mybssid = get_bssid(pmlmepriv);
741 u8 *myhwaddr = myid(&adapter->eeprompriv);
742 u8 *sta_addr = NULL;
743 int bmcast = IS_MCAST(pattrib->dst);
744
745 if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true) ||
746 (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) == true)) {
747 /* filter packets that SA is myself or multicast or broadcast */
748 if (!memcmp(myhwaddr, pattrib->src, ETH_ALEN)) {
749 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" SA==myself\n"));
750 ret = _FAIL;
751 goto exit;
752 }
753
754 if ((memcmp(myhwaddr, pattrib->dst, ETH_ALEN)) && (!bmcast)) {
755 ret = _FAIL;
756 goto exit;
757 }
758
759 if (!memcmp(pattrib->bssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
760 !memcmp(mybssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
761 memcmp(pattrib->bssid, mybssid, ETH_ALEN)) {
762 ret = _FAIL;
763 goto exit;
764 }
765
766 sta_addr = pattrib->src;
767 } else if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) {
768 /* For Station mode, sa and bssid should always be BSSID, and DA is my mac-address */
769 if (memcmp(pattrib->bssid, pattrib->src, ETH_ALEN)) {
770 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("bssid!=TA under STATION_MODE; drop pkt\n"));
771 ret = _FAIL;
772 goto exit;
773 }
774 sta_addr = pattrib->bssid;
775 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
776 if (bmcast) {
777 /* For AP mode, if DA == MCAST, then BSSID should be also MCAST */
778 if (!IS_MCAST(pattrib->bssid)) {
779 ret = _FAIL;
780 goto exit;
781 }
782 } else { /* not mc-frame */
783 /* For AP mode, if DA is non-MCAST, then it must be BSSID, and bssid == BSSID */
784 if (memcmp(pattrib->bssid, pattrib->dst, ETH_ALEN)) {
785 ret = _FAIL;
786 goto exit;
787 }
788
789 sta_addr = pattrib->src;
790 }
791 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE)) {
792 memcpy(pattrib->dst, GetAddr1Ptr(ptr), ETH_ALEN);
793 memcpy(pattrib->src, GetAddr2Ptr(ptr), ETH_ALEN);
794 memcpy(pattrib->bssid, GetAddr3Ptr(ptr), ETH_ALEN);
795 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
796 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
797
798 sta_addr = mybssid;
799 } else {
800 ret = _FAIL;
801 }
802
803 if (bmcast)
804 *psta = rtw_get_bcmc_stainfo(adapter);
805 else
806 *psta = rtw_get_stainfo(pstapriv, sta_addr); /* get ap_info */
807
808 if (*psta == NULL) {
809 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("can't get psta under sta2sta_data_frame ; drop pkt\n"));
810 if (adapter->registrypriv.mp_mode == 1) {
811 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)
812 adapter->mppriv.rx_pktloss++;
813 }
814 ret = _FAIL;
815 goto exit;
816 }
817
818exit:
819
820 return ret;
821}
822
823static int ap2sta_data_frame (
824 struct adapter *adapter,
825 struct recv_frame *precv_frame,
826 struct sta_info **psta)
827{
828 u8 *ptr = precv_frame->rx_data;
829 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
830 int ret = _SUCCESS;
831 struct sta_priv *pstapriv = &adapter->stapriv;
832 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
833 u8 *mybssid = get_bssid(pmlmepriv);
834 u8 *myhwaddr = myid(&adapter->eeprompriv);
835 int bmcast = IS_MCAST(pattrib->dst);
836
837 if ((check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true) &&
838 (check_fwstate(pmlmepriv, _FW_LINKED) == true ||
839 check_fwstate(pmlmepriv, _FW_UNDER_LINKING))) {
840 /* filter packets that SA is myself or multicast or broadcast */
841 if (!memcmp(myhwaddr, pattrib->src, ETH_ALEN)) {
842 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" SA==myself\n"));
843 ret = _FAIL;
844 goto exit;
845 }
846
847 /* da should be for me */
848 if ((memcmp(myhwaddr, pattrib->dst, ETH_ALEN)) && (!bmcast)) {
849 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
850 (" ap2sta_data_frame: compare DA fail; DA=%pM\n", (pattrib->dst)));
851 ret = _FAIL;
852 goto exit;
853 }
854
855 /* check BSSID */
856 if (!memcmp(pattrib->bssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
857 !memcmp(mybssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
858 (memcmp(pattrib->bssid, mybssid, ETH_ALEN))) {
859 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
860 (" ap2sta_data_frame: compare BSSID fail ; BSSID=%pM\n", (pattrib->bssid)));
861 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("mybssid=%pM\n", (mybssid)));
862
863 if (!bmcast) {
864 DBG_88E("issue_deauth to the nonassociated ap=%pM for the reason(7)\n", (pattrib->bssid));
865 issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
866 }
867
868 ret = _FAIL;
869 goto exit;
870 }
871
872 if (bmcast)
873 *psta = rtw_get_bcmc_stainfo(adapter);
874 else
875 *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get ap_info */
876
877 if (*psta == NULL) {
878 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("ap2sta: can't get psta under STATION_MODE ; drop pkt\n"));
879 ret = _FAIL;
880 goto exit;
881 }
882
883 /* if ((GetFrameSubType(ptr) & WIFI_QOS_DATA_TYPE) == WIFI_QOS_DATA_TYPE) { */
884 /* */
885
886 if (GetFrameSubType(ptr) & BIT(6)) {
887 /* No data, will not indicate to upper layer, temporily count it here */
888 count_rx_stats(adapter, precv_frame, *psta);
889 ret = RTW_RX_HANDLED;
890 goto exit;
891 }
892 } else if ((check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) &&
893 (check_fwstate(pmlmepriv, _FW_LINKED) == true)) {
894 memcpy(pattrib->dst, GetAddr1Ptr(ptr), ETH_ALEN);
895 memcpy(pattrib->src, GetAddr2Ptr(ptr), ETH_ALEN);
896 memcpy(pattrib->bssid, GetAddr3Ptr(ptr), ETH_ALEN);
897 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
898 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
899
900 /* */
901 memcpy(pattrib->bssid, mybssid, ETH_ALEN);
902
903 *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get sta_info */
904 if (*psta == NULL) {
905 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("can't get psta under MP_MODE ; drop pkt\n"));
906 ret = _FAIL;
907 goto exit;
908 }
909 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
910 /* Special case */
911 ret = RTW_RX_HANDLED;
912 goto exit;
913 } else {
914 if (!memcmp(myhwaddr, pattrib->dst, ETH_ALEN) && (!bmcast)) {
915 *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get sta_info */
916 if (*psta == NULL) {
917 DBG_88E("issue_deauth to the ap =%pM for the reason(7)\n", (pattrib->bssid));
918
919 issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
920 }
921 }
922
923 ret = _FAIL;
924 }
925
926exit:
927
928 return ret;
929}
930
931static int sta2ap_data_frame(struct adapter *adapter,
932 struct recv_frame *precv_frame,
933 struct sta_info **psta)
934{
935 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
936 struct sta_priv *pstapriv = &adapter->stapriv;
937 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
938 u8 *ptr = precv_frame->rx_data;
939 unsigned char *mybssid = get_bssid(pmlmepriv);
940 int ret = _SUCCESS;
941
942 if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
943 /* For AP mode, RA = BSSID, TX = STA(SRC_ADDR), A3 = DST_ADDR */
944 if (memcmp(pattrib->bssid, mybssid, ETH_ALEN)) {
945 ret = _FAIL;
946 goto exit;
947 }
948
949 *psta = rtw_get_stainfo(pstapriv, pattrib->src);
950 if (*psta == NULL) {
951 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("can't get psta under AP_MODE; drop pkt\n"));
952 DBG_88E("issue_deauth to sta=%pM for the reason(7)\n", (pattrib->src));
953
954 issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
955
956 ret = RTW_RX_HANDLED;
957 goto exit;
958 }
959
960 process_pwrbit_data(adapter, precv_frame);
961
962 if ((GetFrameSubType(ptr) & WIFI_QOS_DATA_TYPE) == WIFI_QOS_DATA_TYPE) {
963 process_wmmps_data(adapter, precv_frame);
964 }
965
966 if (GetFrameSubType(ptr) & BIT(6)) {
967 /* No data, will not indicate to upper layer, temporily count it here */
968 count_rx_stats(adapter, precv_frame, *psta);
969 ret = RTW_RX_HANDLED;
970 goto exit;
971 }
972 } else {
973 u8 *myhwaddr = myid(&adapter->eeprompriv);
974 if (memcmp(pattrib->ra, myhwaddr, ETH_ALEN)) {
975 ret = RTW_RX_HANDLED;
976 goto exit;
977 }
978 DBG_88E("issue_deauth to sta=%pM for the reason(7)\n", (pattrib->src));
979 issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
980 ret = RTW_RX_HANDLED;
981 goto exit;
982 }
983
984exit:
985
986 return ret;
987}
988
989static int validate_recv_ctrl_frame(struct adapter *padapter,
990 struct recv_frame *precv_frame)
991{
992#ifdef CONFIG_88EU_AP_MODE
993 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
994 struct sta_priv *pstapriv = &padapter->stapriv;
995 u8 *pframe = precv_frame->rx_data;
996 /* uint len = precv_frame->len; */
997
998 if (GetFrameType(pframe) != WIFI_CTRL_TYPE)
999 return _FAIL;
1000
1001 /* receive the frames that ra(a1) is my address */
1002 if (memcmp(GetAddr1Ptr(pframe), myid(&padapter->eeprompriv), ETH_ALEN))
1003 return _FAIL;
1004
1005 /* only handle ps-poll */
1006 if (GetFrameSubType(pframe) == WIFI_PSPOLL) {
1007 u16 aid;
1008 u8 wmmps_ac = 0;
1009 struct sta_info *psta = NULL;
1010
1011 aid = GetAid(pframe);
1012 psta = rtw_get_stainfo(pstapriv, GetAddr2Ptr(pframe));
1013
1014 if ((psta == NULL) || (psta->aid != aid))
1015 return _FAIL;
1016
1017 /* for rx pkt statistics */
1018 psta->sta_stats.rx_ctrl_pkts++;
1019
1020 switch (pattrib->priority) {
1021 case 1:
1022 case 2:
1023 wmmps_ac = psta->uapsd_bk&BIT(0);
1024 break;
1025 case 4:
1026 case 5:
1027 wmmps_ac = psta->uapsd_vi&BIT(0);
1028 break;
1029 case 6:
1030 case 7:
1031 wmmps_ac = psta->uapsd_vo&BIT(0);
1032 break;
1033 case 0:
1034 case 3:
1035 default:
1036 wmmps_ac = psta->uapsd_be&BIT(0);
1037 break;
1038 }
1039
1040 if (wmmps_ac)
1041 return _FAIL;
1042
1043 if (psta->state & WIFI_STA_ALIVE_CHK_STATE) {
1044 DBG_88E("%s alive check-rx ps-poll\n", __func__);
1045 psta->expire_to = pstapriv->expire_to;
1046 psta->state ^= WIFI_STA_ALIVE_CHK_STATE;
1047 }
1048
1049 if ((psta->state&WIFI_SLEEP_STATE) && (pstapriv->sta_dz_bitmap&BIT(psta->aid))) {
1050 struct list_head *xmitframe_plist, *xmitframe_phead;
1051 struct xmit_frame *pxmitframe = NULL;
1052 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
1053
1054 spin_lock_bh(&pxmitpriv->lock);
1055
1056 xmitframe_phead = get_list_head(&psta->sleep_q);
1057 xmitframe_plist = xmitframe_phead->next;
1058
1059 if (xmitframe_phead != xmitframe_plist) {
1060 pxmitframe = container_of(xmitframe_plist, struct xmit_frame, list);
1061
1062 xmitframe_plist = xmitframe_plist->next;
1063
1064 list_del_init(&pxmitframe->list);
1065
1066 psta->sleepq_len--;
1067
1068 if (psta->sleepq_len > 0)
1069 pxmitframe->attrib.mdata = 1;
1070 else
1071 pxmitframe->attrib.mdata = 0;
1072
1073 pxmitframe->attrib.triggered = 1;
1074
1075 rtw_hal_xmitframe_enqueue(padapter, pxmitframe);
1076
1077 if (psta->sleepq_len == 0) {
1078 pstapriv->tim_bitmap &= ~BIT(psta->aid);
1079
1080 /* upate BCN for TIM IE */
1081 /* update_BCNTIM(padapter); */
1082 update_beacon(padapter, _TIM_IE_, NULL, false);
1083 }
1084 } else {
1085 if (pstapriv->tim_bitmap&BIT(psta->aid)) {
1086 if (psta->sleepq_len == 0) {
1087 DBG_88E("no buffered packets to xmit\n");
1088
1089 /* issue nulldata with More data bit = 0 to indicate we have no buffered packets */
1090 issue_nulldata(padapter, psta->hwaddr, 0, 0, 0);
1091 } else {
1092 DBG_88E("error!psta->sleepq_len=%d\n", psta->sleepq_len);
1093 psta->sleepq_len = 0;
1094 }
1095
1096 pstapriv->tim_bitmap &= ~BIT(psta->aid);
1097
1098 /* upate BCN for TIM IE */
1099 /* update_BCNTIM(padapter); */
1100 update_beacon(padapter, _TIM_IE_, NULL, false);
1101 }
1102 }
1103 spin_unlock_bh(&pxmitpriv->lock);
1104 }
1105 }
1106
1107#endif
1108
1109 return _FAIL;
1110}
1111
1112struct recv_frame *recvframe_chk_defrag(struct adapter *padapter, struct recv_frame *precv_frame);
1113
1114static int validate_recv_mgnt_frame(struct adapter *padapter,
1115 struct recv_frame *precv_frame)
1116{
1117 struct sta_info *psta;
1118
1119 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("+validate_recv_mgnt_frame\n"));
1120
1121 precv_frame = recvframe_chk_defrag(padapter, precv_frame);
1122 if (precv_frame == NULL) {
1123 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("%s: fragment packet\n", __func__));
1124 return _SUCCESS;
1125 }
1126
1127 /* for rx pkt statistics */
1128 psta = rtw_get_stainfo(&padapter->stapriv, GetAddr2Ptr(precv_frame->rx_data));
1129 if (psta) {
1130 psta->sta_stats.rx_mgnt_pkts++;
1131 if (GetFrameSubType(precv_frame->rx_data) == WIFI_BEACON) {
1132 psta->sta_stats.rx_beacon_pkts++;
1133 } else if (GetFrameSubType(precv_frame->rx_data) == WIFI_PROBEREQ) {
1134 psta->sta_stats.rx_probereq_pkts++;
1135 } else if (GetFrameSubType(precv_frame->rx_data) == WIFI_PROBERSP) {
1136 if (!memcmp(padapter->eeprompriv.mac_addr, GetAddr1Ptr(precv_frame->rx_data), ETH_ALEN))
1137 psta->sta_stats.rx_probersp_pkts++;
1138 else if (is_broadcast_mac_addr(GetAddr1Ptr(precv_frame->rx_data)) ||
1139 is_multicast_mac_addr(GetAddr1Ptr(precv_frame->rx_data)))
1140 psta->sta_stats.rx_probersp_bm_pkts++;
1141 else
1142 psta->sta_stats.rx_probersp_uo_pkts++;
1143 }
1144 }
1145
1146 mgt_dispatcher(padapter, precv_frame);
1147
1148 return _SUCCESS;
1149}
1150
1151static int validate_recv_data_frame(struct adapter *adapter,
1152 struct recv_frame *precv_frame)
1153{
1154 u8 bretry;
1155 u8 *psa, *pda, *pbssid;
1156 struct sta_info *psta = NULL;
1157 u8 *ptr = precv_frame->rx_data;
1158 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
1159 struct security_priv *psecuritypriv = &adapter->securitypriv;
1160 int ret = _SUCCESS;
1161
1162 bretry = GetRetry(ptr);
1163 pda = get_da(ptr);
1164 psa = get_sa(ptr);
1165 pbssid = get_hdr_bssid(ptr);
1166
1167 if (pbssid == NULL) {
1168 ret = _FAIL;
1169 goto exit;
1170 }
1171
1172 memcpy(pattrib->dst, pda, ETH_ALEN);
1173 memcpy(pattrib->src, psa, ETH_ALEN);
1174
1175 memcpy(pattrib->bssid, pbssid, ETH_ALEN);
1176
1177 switch (pattrib->to_fr_ds) {
1178 case 0:
1179 memcpy(pattrib->ra, pda, ETH_ALEN);
1180 memcpy(pattrib->ta, psa, ETH_ALEN);
1181 ret = sta2sta_data_frame(adapter, precv_frame, &psta);
1182 break;
1183 case 1:
1184 memcpy(pattrib->ra, pda, ETH_ALEN);
1185 memcpy(pattrib->ta, pbssid, ETH_ALEN);
1186 ret = ap2sta_data_frame(adapter, precv_frame, &psta);
1187 break;
1188 case 2:
1189 memcpy(pattrib->ra, pbssid, ETH_ALEN);
1190 memcpy(pattrib->ta, psa, ETH_ALEN);
1191 ret = sta2ap_data_frame(adapter, precv_frame, &psta);
1192 break;
1193 case 3:
1194 memcpy(pattrib->ra, GetAddr1Ptr(ptr), ETH_ALEN);
1195 memcpy(pattrib->ta, GetAddr2Ptr(ptr), ETH_ALEN);
1196 ret = _FAIL;
1197 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" case 3\n"));
1198 break;
1199 default:
1200 ret = _FAIL;
1201 break;
1202 }
1203
1204 if (ret == _FAIL) {
1205 goto exit;
1206 } else if (ret == RTW_RX_HANDLED) {
1207 goto exit;
1208 }
1209
1210 if (psta == NULL) {
1211 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" after to_fr_ds_chk; psta==NULL\n"));
1212 ret = _FAIL;
1213 goto exit;
1214 }
1215
1216 /* psta->rssi = prxcmd->rssi; */
1217 /* psta->signal_quality = prxcmd->sq; */
1218 precv_frame->psta = psta;
1219
1220 pattrib->amsdu = 0;
1221 pattrib->ack_policy = 0;
1222 /* parsing QC field */
1223 if (pattrib->qos == 1) {
1224 pattrib->priority = GetPriority((ptr + 24));
1225 pattrib->ack_policy = GetAckpolicy((ptr + 24));
1226 pattrib->amsdu = GetAMsdu((ptr + 24));
1227 pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 32 : 26;
1228
1229 if (pattrib->priority != 0 && pattrib->priority != 3)
1230 adapter->recvpriv.bIsAnyNonBEPkts = true;
1231 } else {
1232 pattrib->priority = 0;
1233 pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 30 : 24;
1234 }
1235
1236 if (pattrib->order)/* HT-CTRL 11n */
1237 pattrib->hdrlen += 4;
1238
1239 precv_frame->preorder_ctrl = &psta->recvreorder_ctrl[pattrib->priority];
1240
1241 /* decache, drop duplicate recv packets */
1242 if (recv_decache(precv_frame, bretry, &psta->sta_recvpriv.rxcache) == _FAIL) {
1243 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("decache : drop pkt\n"));
1244 ret = _FAIL;
1245 goto exit;
1246 }
1247
1248 if (pattrib->privacy) {
1249 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("validate_recv_data_frame:pattrib->privacy=%x\n", pattrib->privacy));
1250 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n ^^^^^^^^^^^IS_MCAST(pattrib->ra(0x%02x))=%d^^^^^^^^^^^^^^^6\n", pattrib->ra[0], IS_MCAST(pattrib->ra)));
1251
1252 GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, IS_MCAST(pattrib->ra));
1253
1254 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n pattrib->encrypt=%d\n", pattrib->encrypt));
1255
1256 SET_ICE_IV_LEN(pattrib->iv_len, pattrib->icv_len, pattrib->encrypt);
1257 } else {
1258 pattrib->encrypt = 0;
1259 pattrib->iv_len = 0;
1260 pattrib->icv_len = 0;
1261 }
1262
1263exit:
1264
1265 return ret;
1266}
1267
1268static int validate_recv_frame(struct adapter *adapter, struct recv_frame *precv_frame)
1269{
1270 /* shall check frame subtype, to / from ds, da, bssid */
1271
1272 /* then call check if rx seq/frag. duplicated. */
1273
1274 u8 type;
1275 u8 subtype;
1276 int retval = _SUCCESS;
1277 u8 bDumpRxPkt;
1278 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
1279 u8 *ptr = precv_frame->rx_data;
1280 u8 ver = (unsigned char) (*ptr)&0x3;
1281 struct mlme_ext_priv *pmlmeext = &adapter->mlmeextpriv;
1282
1283 if (pmlmeext->sitesurvey_res.state == SCAN_PROCESS) {
1284 int ch_set_idx = rtw_ch_set_search_ch(pmlmeext->channel_set, rtw_get_oper_ch(adapter));
1285 if (ch_set_idx >= 0)
1286 pmlmeext->channel_set[ch_set_idx].rx_count++;
1287 }
1288
1289 /* add version chk */
1290 if (ver != 0) {
1291 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_data_frame fail! (ver!=0)\n"));
1292 retval = _FAIL;
1293 goto exit;
1294 }
1295
1296 type = GetFrameType(ptr);
1297 subtype = GetFrameSubType(ptr); /* bit(7)~bit(2) */
1298
1299 pattrib->to_fr_ds = get_tofr_ds(ptr);
1300
1301 pattrib->frag_num = GetFragNum(ptr);
1302 pattrib->seq_num = GetSequence(ptr);
1303
1304 pattrib->pw_save = GetPwrMgt(ptr);
1305 pattrib->mfrag = GetMFrag(ptr);
1306 pattrib->mdata = GetMData(ptr);
1307 pattrib->privacy = GetPrivacy(ptr);
1308 pattrib->order = GetOrder(ptr);
1309
1310 /* Dump rx packets */
1311 rtw_hal_get_def_var(adapter, HAL_DEF_DBG_DUMP_RXPKT, &(bDumpRxPkt));
1312 if (bDumpRxPkt == 1) {/* dump all rx packets */
1313 int i;
1314 DBG_88E("#############################\n");
1315
1316 for (i = 0; i < 64; i = i+8)
1317 DBG_88E("%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:\n", *(ptr+i),
1318 *(ptr+i+1), *(ptr+i+2), *(ptr+i+3), *(ptr+i+4), *(ptr+i+5), *(ptr+i+6), *(ptr+i+7));
1319 DBG_88E("#############################\n");
1320 } else if (bDumpRxPkt == 2) {
1321 if (type == WIFI_MGT_TYPE) {
1322 int i;
1323 DBG_88E("#############################\n");
1324
1325 for (i = 0; i < 64; i = i+8)
1326 DBG_88E("%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:\n", *(ptr+i),
1327 *(ptr+i+1), *(ptr+i+2), *(ptr+i+3), *(ptr+i+4), *(ptr+i+5), *(ptr+i+6), *(ptr+i+7));
1328 DBG_88E("#############################\n");
1329 }
1330 } else if (bDumpRxPkt == 3) {
1331 if (type == WIFI_DATA_TYPE) {
1332 int i;
1333 DBG_88E("#############################\n");
1334
1335 for (i = 0; i < 64; i = i+8)
1336 DBG_88E("%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:\n", *(ptr+i),
1337 *(ptr+i+1), *(ptr+i+2), *(ptr+i+3), *(ptr+i+4), *(ptr+i+5), *(ptr+i+6), *(ptr+i+7));
1338 DBG_88E("#############################\n");
1339 }
1340 }
1341 switch (type) {
1342 case WIFI_MGT_TYPE: /* mgnt */
1343 retval = validate_recv_mgnt_frame(adapter, precv_frame);
1344 if (retval == _FAIL)
1345 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_mgnt_frame fail\n"));
1346 retval = _FAIL; /* only data frame return _SUCCESS */
1347 break;
1348 case WIFI_CTRL_TYPE: /* ctrl */
1349 retval = validate_recv_ctrl_frame(adapter, precv_frame);
1350 if (retval == _FAIL)
1351 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_ctrl_frame fail\n"));
1352 retval = _FAIL; /* only data frame return _SUCCESS */
1353 break;
1354 case WIFI_DATA_TYPE: /* data */
1355 rtw_led_control(adapter, LED_CTL_RX);
1356 pattrib->qos = (subtype & BIT(7)) ? 1 : 0;
1357 retval = validate_recv_data_frame(adapter, precv_frame);
1358 if (retval == _FAIL) {
1359 struct recv_priv *precvpriv = &adapter->recvpriv;
1360 precvpriv->rx_drop++;
1361 }
1362 break;
1363 default:
1364 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_data_frame fail! type= 0x%x\n", type));
1365 retval = _FAIL;
1366 break;
1367 }
1368
1369exit:
1370
1371 return retval;
1372}
1373
1374/* remove the wlanhdr and add the eth_hdr */
1375
1376static int wlanhdr_to_ethhdr (struct recv_frame *precvframe)
1377{
1378 int rmv_len;
1379 u16 eth_type, len;
1380 __be16 be_tmp;
1381 u8 bsnaphdr;
1382 u8 *psnap_type;
1383 struct ieee80211_snap_hdr *psnap;
1384
1385 int ret = _SUCCESS;
1386 struct adapter *adapter = precvframe->adapter;
1387 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
1388
1389 u8 *ptr = get_recvframe_data(precvframe); /* point to frame_ctrl field */
1390 struct rx_pkt_attrib *pattrib = &precvframe->attrib;
1391
1392 if (pattrib->encrypt)
1393 recvframe_pull_tail(precvframe, pattrib->icv_len);
1394
1395 psnap = (struct ieee80211_snap_hdr *)(ptr+pattrib->hdrlen + pattrib->iv_len);
1396 psnap_type = ptr+pattrib->hdrlen + pattrib->iv_len+SNAP_SIZE;
1397 /* convert hdr + possible LLC headers into Ethernet header */
1398 if ((!memcmp(psnap, rtw_rfc1042_header, SNAP_SIZE) &&
1399 memcmp(psnap_type, SNAP_ETH_TYPE_IPX, 2) &&
1400 memcmp(psnap_type, SNAP_ETH_TYPE_APPLETALK_AARP, 2)) ||
1401 !memcmp(psnap, rtw_bridge_tunnel_header, SNAP_SIZE)) {
1402 /* remove RFC1042 or Bridge-Tunnel encapsulation and replace EtherType */
1403 bsnaphdr = true;
1404 } else {
1405 /* Leave Ethernet header part of hdr and full payload */
1406 bsnaphdr = false;
1407 }
1408
1409 rmv_len = pattrib->hdrlen + pattrib->iv_len + (bsnaphdr ? SNAP_SIZE : 0);
1410 len = precvframe->len - rmv_len;
1411
1412 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
1413 ("\n===pattrib->hdrlen: %x, pattrib->iv_len:%x===\n\n", pattrib->hdrlen, pattrib->iv_len));
1414
1415 memcpy(&be_tmp, ptr+rmv_len, 2);
1416 eth_type = ntohs(be_tmp); /* pattrib->ether_type */
1417 pattrib->eth_type = eth_type;
1418
1419 if ((check_fwstate(pmlmepriv, WIFI_MP_STATE))) {
1420 ptr += rmv_len;
1421 *ptr = 0x87;
1422 *(ptr+1) = 0x12;
1423
1424 eth_type = 0x8712;
1425 /* append rx status for mp test packets */
1426 ptr = recvframe_pull(precvframe, (rmv_len-sizeof(struct ethhdr)+2)-24);
1427 memcpy(ptr, get_rxmem(precvframe), 24);
1428 ptr += 24;
1429 } else {
1430 ptr = recvframe_pull(precvframe, (rmv_len-sizeof(struct ethhdr) + (bsnaphdr ? 2 : 0)));
1431 }
1432
1433 memcpy(ptr, pattrib->dst, ETH_ALEN);
1434 memcpy(ptr+ETH_ALEN, pattrib->src, ETH_ALEN);
1435
1436 if (!bsnaphdr) {
1437 be_tmp = htons(len);
1438 memcpy(ptr+12, &be_tmp, 2);
1439 }
1440
1441 return ret;
1442}
1443
1444/* perform defrag */
1445static struct recv_frame *recvframe_defrag(struct adapter *adapter, struct __queue *defrag_q)
1446{
1447 struct list_head *plist, *phead;
1448 u8 wlanhdr_offset;
1449 u8 curfragnum;
1450 struct recv_frame *pfhdr, *pnfhdr;
1451 struct recv_frame *prframe, *pnextrframe;
1452 struct __queue *pfree_recv_queue;
1453
1454 curfragnum = 0;
1455 pfree_recv_queue = &adapter->recvpriv.free_recv_queue;
1456
1457 phead = get_list_head(defrag_q);
1458 plist = phead->next;
1459 pfhdr = container_of(plist, struct recv_frame, list);
1460 prframe = (struct recv_frame *)pfhdr;
1461 list_del_init(&(prframe->list));
1462
1463 if (curfragnum != pfhdr->attrib.frag_num) {
1464 /* the first fragment number must be 0 */
1465 /* free the whole queue */
1466 rtw_free_recvframe(prframe, pfree_recv_queue);
1467 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
1468
1469 return NULL;
1470 }
1471
1472 curfragnum++;
1473
1474 plist = get_list_head(defrag_q);
1475 plist = phead->next;
1476 pfhdr = container_of(plist, struct recv_frame, list);
1477 prframe = (struct recv_frame *)pfhdr;
1478 list_del_init(&(prframe->list));
1479
1480 plist = plist->next;
1481
1482 while (phead != plist) {
1483 pnfhdr = container_of(plist, struct recv_frame, list);
1484 pnextrframe = (struct recv_frame *)pnfhdr;
1485
1486 /* check the fragment sequence (2nd ~n fragment frame) */
1487
1488 if (curfragnum != pnfhdr->attrib.frag_num) {
1489 /* the fragment number must be increasing (after decache) */
1490 /* release the defrag_q & prframe */
1491 rtw_free_recvframe(prframe, pfree_recv_queue);
1492 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
1493 return NULL;
1494 }
1495
1496 curfragnum++;
1497
1498 /* copy the 2nd~n fragment frame's payload to the first fragment */
1499 /* get the 2nd~last fragment frame's payload */
1500
1501 wlanhdr_offset = pnfhdr->attrib.hdrlen + pnfhdr->attrib.iv_len;
1502
1503 recvframe_pull(pnextrframe, wlanhdr_offset);
1504
1505 /* append to first fragment frame's tail (if privacy frame, pull the ICV) */
1506 recvframe_pull_tail(prframe, pfhdr->attrib.icv_len);
1507
1508 /* memcpy */
1509 memcpy(pfhdr->rx_tail, pnfhdr->rx_data, pnfhdr->len);
1510
1511 recvframe_put(prframe, pnfhdr->len);
1512
1513 pfhdr->attrib.icv_len = pnfhdr->attrib.icv_len;
1514 plist = plist->next;
1515 }
1516
1517 /* free the defrag_q queue and return the prframe */
1518 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
1519
1520 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("Performance defrag!!!!!\n"));
1521
1522 return prframe;
1523}
1524
1525/* check if need to defrag, if needed queue the frame to defrag_q */
1526struct recv_frame *recvframe_chk_defrag(struct adapter *padapter, struct recv_frame *precv_frame)
1527{
1528 u8 ismfrag;
1529 u8 fragnum;
1530 u8 *psta_addr;
1531 struct recv_frame *pfhdr;
1532 struct sta_info *psta;
1533 struct sta_priv *pstapriv;
1534 struct list_head *phead;
1535 struct recv_frame *prtnframe = NULL;
1536 struct __queue *pfree_recv_queue, *pdefrag_q;
1537
1538 pstapriv = &padapter->stapriv;
1539
1540 pfhdr = precv_frame;
1541
1542 pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
1543
1544 /* need to define struct of wlan header frame ctrl */
1545 ismfrag = pfhdr->attrib.mfrag;
1546 fragnum = pfhdr->attrib.frag_num;
1547
1548 psta_addr = pfhdr->attrib.ta;
1549 psta = rtw_get_stainfo(pstapriv, psta_addr);
1550 if (psta == NULL) {
1551 u8 type = GetFrameType(pfhdr->rx_data);
1552 if (type != WIFI_DATA_TYPE) {
1553 psta = rtw_get_bcmc_stainfo(padapter);
1554 pdefrag_q = &psta->sta_recvpriv.defrag_q;
1555 } else {
1556 pdefrag_q = NULL;
1557 }
1558 } else {
1559 pdefrag_q = &psta->sta_recvpriv.defrag_q;
1560 }
1561
1562 if ((ismfrag == 0) && (fragnum == 0))
1563 prtnframe = precv_frame;/* isn't a fragment frame */
1564
1565 if (ismfrag == 1) {
1566 /* 0~(n-1) fragment frame */
1567 /* enqueue to defraf_g */
1568 if (pdefrag_q != NULL) {
1569 if (fragnum == 0) {
1570 /* the first fragment */
1571 if (!list_empty(&pdefrag_q->queue)) {
1572 /* free current defrag_q */
1573 rtw_free_recvframe_queue(pdefrag_q, pfree_recv_queue);
1574 }
1575 }
1576
1577 /* Then enqueue the 0~(n-1) fragment into the defrag_q */
1578
1579 phead = get_list_head(pdefrag_q);
1580 list_add_tail(&pfhdr->list, phead);
1581
1582 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("Enqueuq: ismfrag=%d, fragnum=%d\n", ismfrag, fragnum));
1583
1584 prtnframe = NULL;
1585 } else {
1586 /* can't find this ta's defrag_queue, so free this recv_frame */
1587 if (precv_frame && pfree_recv_queue)
1588 rtw_free_recvframe(precv_frame, pfree_recv_queue);
1589 prtnframe = NULL;
1590 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("Free because pdefrag_q==NULL: ismfrag=%d, fragnum=%d\n", ismfrag, fragnum));
1591 }
1592 }
1593
1594 if ((ismfrag == 0) && (fragnum != 0)) {
1595 /* the last fragment frame */
1596 /* enqueue the last fragment */
1597 if (pdefrag_q != NULL) {
1598 phead = get_list_head(pdefrag_q);
1599 list_add_tail(&pfhdr->list, phead);
1600
1601 /* call recvframe_defrag to defrag */
1602 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("defrag: ismfrag=%d, fragnum=%d\n", ismfrag, fragnum));
1603 precv_frame = recvframe_defrag(padapter, pdefrag_q);
1604 prtnframe = precv_frame;
1605 } else {
1606 /* can't find this ta's defrag_queue, so free this recv_frame */
1607 if (precv_frame && pfree_recv_queue)
1608 rtw_free_recvframe(precv_frame, pfree_recv_queue);
1609 prtnframe = NULL;
1610 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("Free because pdefrag_q==NULL: ismfrag=%d, fragnum=%d\n", ismfrag, fragnum));
1611 }
1612 }
1613
1614 if ((prtnframe != NULL) && (prtnframe->attrib.privacy)) {
1615 /* after defrag we must check tkip mic code */
1616 if (recvframe_chkmic(padapter, prtnframe) == _FAIL) {
1617 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvframe_chkmic(padapter, prtnframe)==_FAIL\n"));
1618 if (precv_frame && pfree_recv_queue)
1619 rtw_free_recvframe(prtnframe, pfree_recv_queue);
1620 prtnframe = NULL;
1621 }
1622 }
1623
1624 return prtnframe;
1625}
1626
1627static int amsdu_to_msdu(struct adapter *padapter, struct recv_frame *prframe)
1628{
1629 int a_len, padding_len;
1630 u16 eth_type, nSubframe_Length;
1631 u8 nr_subframes, i;
1632 unsigned char *pdata;
1633 struct rx_pkt_attrib *pattrib;
1634 unsigned char *data_ptr;
1635 struct sk_buff *sub_skb, *subframes[MAX_SUBFRAME_COUNT];
1636 struct recv_priv *precvpriv = &padapter->recvpriv;
1637 struct __queue *pfree_recv_queue = &(precvpriv->free_recv_queue);
1638 int ret = _SUCCESS;
1639 nr_subframes = 0;
1640
1641 pattrib = &prframe->attrib;
1642
1643 recvframe_pull(prframe, prframe->attrib.hdrlen);
1644
1645 if (prframe->attrib.iv_len > 0)
1646 recvframe_pull(prframe, prframe->attrib.iv_len);
1647
1648 a_len = prframe->len;
1649
1650 pdata = prframe->rx_data;
1651
1652 while (a_len > ETH_HLEN) {
1653 /* Offset 12 denote 2 mac address */
1654 nSubframe_Length = RTW_GET_BE16(pdata + 12);
1655
1656 if (a_len < (ETHERNET_HEADER_SIZE + nSubframe_Length)) {
1657 DBG_88E("nRemain_Length is %d and nSubframe_Length is : %d\n", a_len, nSubframe_Length);
1658 goto exit;
1659 }
1660
1661 /* move the data point to data content */
1662 pdata += ETH_HLEN;
1663 a_len -= ETH_HLEN;
1664
1665 /* Allocate new skb for releasing to upper layer */
1666 sub_skb = dev_alloc_skb(nSubframe_Length + 12);
1667 if (sub_skb) {
1668 skb_reserve(sub_skb, 12);
1669 data_ptr = (u8 *)skb_put(sub_skb, nSubframe_Length);
1670 memcpy(data_ptr, pdata, nSubframe_Length);
1671 } else {
1672 sub_skb = skb_clone(prframe->pkt, GFP_ATOMIC);
1673 if (sub_skb) {
1674 sub_skb->data = pdata;
1675 sub_skb->len = nSubframe_Length;
1676 skb_set_tail_pointer(sub_skb, nSubframe_Length);
1677 } else {
1678 DBG_88E("skb_clone() Fail!!! , nr_subframes=%d\n", nr_subframes);
1679 break;
1680 }
1681 }
1682
1683 subframes[nr_subframes++] = sub_skb;
1684
1685 if (nr_subframes >= MAX_SUBFRAME_COUNT) {
1686 DBG_88E("ParseSubframe(): Too many Subframes! Packets dropped!\n");
1687 break;
1688 }
1689
1690 pdata += nSubframe_Length;
1691 a_len -= nSubframe_Length;
1692 if (a_len != 0) {
1693 padding_len = 4 - ((nSubframe_Length + ETH_HLEN) & (4-1));
1694 if (padding_len == 4) {
1695 padding_len = 0;
1696 }
1697
1698 if (a_len < padding_len) {
1699 goto exit;
1700 }
1701 pdata += padding_len;
1702 a_len -= padding_len;
1703 }
1704 }
1705
1706 for (i = 0; i < nr_subframes; i++) {
1707 sub_skb = subframes[i];
1708 /* convert hdr + possible LLC headers into Ethernet header */
1709 eth_type = RTW_GET_BE16(&sub_skb->data[6]);
1710 if (sub_skb->len >= 8 &&
1711 ((!memcmp(sub_skb->data, rtw_rfc1042_header, SNAP_SIZE) &&
1712 eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) ||
1713 !memcmp(sub_skb->data, rtw_bridge_tunnel_header, SNAP_SIZE))) {
1714 /* remove RFC1042 or Bridge-Tunnel encapsulation and replace EtherType */
1715 skb_pull(sub_skb, SNAP_SIZE);
1716 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN);
1717 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst, ETH_ALEN);
1718 } else {
1719 __be16 len;
1720 /* Leave Ethernet header part of hdr and full payload */
1721 len = htons(sub_skb->len);
1722 memcpy(skb_push(sub_skb, 2), &len, 2);
1723 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN);
1724 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst, ETH_ALEN);
1725 }
1726
1727 /* Indicate the packets to upper layer */
1728 /* Insert NAT2.5 RX here! */
1729 sub_skb->protocol = eth_type_trans(sub_skb, padapter->pnetdev);
1730 sub_skb->dev = padapter->pnetdev;
1731
1732 sub_skb->ip_summed = CHECKSUM_NONE;
1733
1734 netif_rx(sub_skb);
1735 }
1736
1737exit:
1738
1739 prframe->len = 0;
1740 rtw_free_recvframe(prframe, pfree_recv_queue);/* free this recv_frame */
1741
1742 return ret;
1743}
1744
1745static int check_indicate_seq(struct recv_reorder_ctrl *preorder_ctrl, u16 seq_num)
1746{
1747 u8 wsize = preorder_ctrl->wsize_b;
1748 u16 wend = (preorder_ctrl->indicate_seq + wsize - 1) & 0xFFF;/* 4096; */
1749
1750 /* Rx Reorder initialize condition. */
1751 if (preorder_ctrl->indicate_seq == 0xFFFF)
1752 preorder_ctrl->indicate_seq = seq_num;
1753
1754 /* Drop out the packet which SeqNum is smaller than WinStart */
1755 if (SN_LESS(seq_num, preorder_ctrl->indicate_seq))
1756 return false;
1757
1758 /* */
1759 /* Sliding window manipulation. Conditions includes: */
1760 /* 1. Incoming SeqNum is equal to WinStart =>Window shift 1 */
1761 /* 2. Incoming SeqNum is larger than the WinEnd => Window shift N */
1762 /* */
1763 if (SN_EQUAL(seq_num, preorder_ctrl->indicate_seq)) {
1764 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF;
1765 } else if (SN_LESS(wend, seq_num)) {
1766 if (seq_num >= (wsize - 1))
1767 preorder_ctrl->indicate_seq = seq_num + 1 - wsize;
1768 else
1769 preorder_ctrl->indicate_seq = 0xFFF - (wsize - (seq_num + 1)) + 1;
1770 }
1771
1772 return true;
1773}
1774
1775int enqueue_reorder_recvframe(struct recv_reorder_ctrl *preorder_ctrl, struct recv_frame *prframe);
1776int enqueue_reorder_recvframe(struct recv_reorder_ctrl *preorder_ctrl, struct recv_frame *prframe)
1777{
1778 struct rx_pkt_attrib *pattrib = &prframe->attrib;
1779 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
1780 struct list_head *phead, *plist;
1781 struct recv_frame *hdr;
1782 struct rx_pkt_attrib *pnextattrib;
1783
1784 phead = get_list_head(ppending_recvframe_queue);
1785 plist = phead->next;
1786
1787 while (phead != plist) {
1788 hdr = container_of(plist, struct recv_frame, list);
1789 pnextattrib = &hdr->attrib;
1790
1791 if (SN_LESS(pnextattrib->seq_num, pattrib->seq_num))
1792 plist = plist->next;
1793 else if (SN_EQUAL(pnextattrib->seq_num, pattrib->seq_num))
1794 return false;
1795 else
1796 break;
1797 }
1798
1799 list_del_init(&(prframe->list));
1800
1801 list_add_tail(&(prframe->list), plist);
1802 return true;
1803}
1804
1805static int recv_indicatepkts_in_order(struct adapter *padapter, struct recv_reorder_ctrl *preorder_ctrl, int bforced)
1806{
1807 struct list_head *phead, *plist;
1808 struct recv_frame *prframe;
1809 struct rx_pkt_attrib *pattrib;
1810 int bPktInBuf = false;
1811 struct recv_priv *precvpriv = &padapter->recvpriv;
1812 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
1813
1814 phead = get_list_head(ppending_recvframe_queue);
1815 plist = phead->next;
1816
1817 /* Handling some condition for forced indicate case. */
1818 if (bforced) {
1819 if (list_empty(phead))
1820 return true;
1821
1822 prframe = container_of(plist, struct recv_frame, list);
1823 pattrib = &prframe->attrib;
1824 preorder_ctrl->indicate_seq = pattrib->seq_num;
1825 }
1826
1827 /* Prepare indication list and indication. */
1828 /* Check if there is any packet need indicate. */
1829 while (!list_empty(phead)) {
1830 prframe = container_of(plist, struct recv_frame, list);
1831 pattrib = &prframe->attrib;
1832
1833 if (!SN_LESS(preorder_ctrl->indicate_seq, pattrib->seq_num)) {
1834 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
1835 ("recv_indicatepkts_in_order: indicate=%d seq=%d amsdu=%d\n",
1836 preorder_ctrl->indicate_seq, pattrib->seq_num, pattrib->amsdu));
1837 plist = plist->next;
1838 list_del_init(&(prframe->list));
1839
1840 if (SN_EQUAL(preorder_ctrl->indicate_seq, pattrib->seq_num))
1841 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF;
1842
1843 /* Set this as a lock to make sure that only one thread is indicating packet. */
1844
1845 /* indicate this recv_frame */
1846 if (!pattrib->amsdu) {
1847 if ((!padapter->bDriverStopped) &&
1848 (!padapter->bSurpriseRemoved))
1849 rtw_recv_indicatepkt(padapter, prframe);/* indicate this recv_frame */
1850 } else if (pattrib->amsdu == 1) {
1851 if (amsdu_to_msdu(padapter, prframe) != _SUCCESS)
1852 rtw_free_recvframe(prframe, &precvpriv->free_recv_queue);
1853 } else {
1854 /* error condition; */
1855 }
1856
1857 /* Update local variables. */
1858 bPktInBuf = false;
1859 } else {
1860 bPktInBuf = true;
1861 break;
1862 }
1863 }
1864 return bPktInBuf;
1865}
1866
1867static int recv_indicatepkt_reorder(struct adapter *padapter, struct recv_frame *prframe)
1868{
1869 int retval = _SUCCESS;
1870 struct rx_pkt_attrib *pattrib = &prframe->attrib;
1871 struct recv_reorder_ctrl *preorder_ctrl = prframe->preorder_ctrl;
1872 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
1873
1874 if (!pattrib->amsdu) {
1875 /* s1. */
1876 wlanhdr_to_ethhdr(prframe);
1877
1878 if (pattrib->qos != 1) {
1879 if (!padapter->bDriverStopped &&
1880 !padapter->bSurpriseRemoved) {
1881 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
1882 ("@@@@ recv_indicatepkt_reorder -recv_func recv_indicatepkt\n"));
1883
1884 rtw_recv_indicatepkt(padapter, prframe);
1885 return _SUCCESS;
1886 }
1887
1888 return _FAIL;
1889 }
1890
1891 if (!preorder_ctrl->enable) {
1892 /* indicate this recv_frame */
1893 preorder_ctrl->indicate_seq = pattrib->seq_num;
1894 rtw_recv_indicatepkt(padapter, prframe);
1895
1896 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096;
1897 return _SUCCESS;
1898 }
1899 } else if (pattrib->amsdu == 1) { /* temp filter -> means didn't support A-MSDUs in a A-MPDU */
1900 if (!preorder_ctrl->enable) {
1901 preorder_ctrl->indicate_seq = pattrib->seq_num;
1902 retval = amsdu_to_msdu(padapter, prframe);
1903
1904 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096;
1905 return retval;
1906 }
1907 }
1908
1909 spin_lock_bh(&ppending_recvframe_queue->lock);
1910
1911 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
1912 ("recv_indicatepkt_reorder: indicate=%d seq=%d\n",
1913 preorder_ctrl->indicate_seq, pattrib->seq_num));
1914
1915 /* s2. check if winstart_b(indicate_seq) needs to been updated */
1916 if (!check_indicate_seq(preorder_ctrl, pattrib->seq_num))
1917 goto _err_exit;
1918
1919 /* s3. Insert all packet into Reorder Queue to maintain its ordering. */
1920 if (!enqueue_reorder_recvframe(preorder_ctrl, prframe))
1921 goto _err_exit;
1922
1923 /* s4. */
1924 /* Indication process. */
1925 /* After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets */
1926 /* with the SeqNum smaller than latest WinStart and buffer other packets. */
1927 /* */
1928 /* For Rx Reorder condition: */
1929 /* 1. All packets with SeqNum smaller than WinStart => Indicate */
1930 /* 2. All packets with SeqNum larger than or equal to WinStart => Buffer it. */
1931 /* */
1932
1933 /* recv_indicatepkts_in_order(padapter, preorder_ctrl, true); */
1934 if (recv_indicatepkts_in_order(padapter, preorder_ctrl, false)) {
1935 _set_timer(&preorder_ctrl->reordering_ctrl_timer, REORDER_WAIT_TIME);
1936 spin_unlock_bh(&ppending_recvframe_queue->lock);
1937 } else {
1938 spin_unlock_bh(&ppending_recvframe_queue->lock);
1939 _cancel_timer_ex(&preorder_ctrl->reordering_ctrl_timer);
1940 }
1941
1942_success_exit:
1943
1944 return _SUCCESS;
1945
1946_err_exit:
1947
1948 spin_unlock_bh(&ppending_recvframe_queue->lock);
1949
1950 return _FAIL;
1951}
1952
1953void rtw_reordering_ctrl_timeout_handler(void *pcontext)
1954{
1955 struct recv_reorder_ctrl *preorder_ctrl = (struct recv_reorder_ctrl *)pcontext;
1956 struct adapter *padapter = preorder_ctrl->padapter;
1957 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
1958
1959 if (padapter->bDriverStopped || padapter->bSurpriseRemoved)
1960 return;
1961
1962 spin_lock_bh(&ppending_recvframe_queue->lock);
1963
1964 if (recv_indicatepkts_in_order(padapter, preorder_ctrl, true) == true)
1965 _set_timer(&preorder_ctrl->reordering_ctrl_timer, REORDER_WAIT_TIME);
1966
1967 spin_unlock_bh(&ppending_recvframe_queue->lock);
1968}
1969
1970static int process_recv_indicatepkts(struct adapter *padapter, struct recv_frame *prframe)
1971{
1972 int retval = _SUCCESS;
1973 /* struct recv_priv *precvpriv = &padapter->recvpriv; */
1974 /* struct rx_pkt_attrib *pattrib = &prframe->attrib; */
1975 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
1976 struct ht_priv *phtpriv = &pmlmepriv->htpriv;
1977
1978 if (phtpriv->ht_option) { /* B/G/N Mode */
1979 /* prframe->preorder_ctrl = &precvpriv->recvreorder_ctrl[pattrib->priority]; */
1980
1981 if (recv_indicatepkt_reorder(padapter, prframe) != _SUCCESS) {
1982 /* including perform A-MPDU Rx Ordering Buffer Control */
1983 if ((!padapter->bDriverStopped) &&
1984 (!padapter->bSurpriseRemoved)) {
1985 retval = _FAIL;
1986 return retval;
1987 }
1988 }
1989 } else { /* B/G mode */
1990 retval = wlanhdr_to_ethhdr (prframe);
1991 if (retval != _SUCCESS) {
1992 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("wlanhdr_to_ethhdr: drop pkt\n"));
1993 return retval;
1994 }
1995
1996 if ((!padapter->bDriverStopped) &&
1997 (!padapter->bSurpriseRemoved)) {
1998 /* indicate this recv_frame */
1999 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("@@@@ process_recv_indicatepkts- recv_func recv_indicatepkt\n"));
2000 rtw_recv_indicatepkt(padapter, prframe);
2001 } else {
2002 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("@@@@ process_recv_indicatepkts- recv_func free_indicatepkt\n"));
2003
2004 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("recv_func:bDriverStopped(%d) OR bSurpriseRemoved(%d)", padapter->bDriverStopped, padapter->bSurpriseRemoved));
2005 retval = _FAIL;
2006 return retval;
2007 }
2008 }
2009
2010 return retval;
2011}
2012
2013static int recv_func_prehandle(struct adapter *padapter, struct recv_frame *rframe)
2014{
2015 int ret = _SUCCESS;
2016 struct rx_pkt_attrib *pattrib = &rframe->attrib;
2017 struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
2018 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
2019
2020 if (padapter->registrypriv.mp_mode == 1) {
2021 if (pattrib->crc_err == 1)
2022 padapter->mppriv.rx_crcerrpktcount++;
2023 else
2024 padapter->mppriv.rx_pktcount++;
2025
2026 if (check_fwstate(pmlmepriv, WIFI_MP_LPBK_STATE) == false) {
2027 RT_TRACE(_module_rtl871x_recv_c_, _drv_alert_, ("MP - Not in loopback mode , drop pkt\n"));
2028 ret = _FAIL;
2029 rtw_free_recvframe(rframe, pfree_recv_queue);/* free this recv_frame */
2030 goto exit;
2031 }
2032 }
2033
2034 /* check the frame crtl field and decache */
2035 ret = validate_recv_frame(padapter, rframe);
2036 if (ret != _SUCCESS) {
2037 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("recv_func: validate_recv_frame fail! drop pkt\n"));
2038 rtw_free_recvframe(rframe, pfree_recv_queue);/* free this recv_frame */
2039 goto exit;
2040 }
2041
2042exit:
2043 return ret;
2044}
2045
2046static int recv_func_posthandle(struct adapter *padapter, struct recv_frame *prframe)
2047{
2048 int ret = _SUCCESS;
2049 struct recv_frame *orig_prframe = prframe;
2050 struct recv_priv *precvpriv = &padapter->recvpriv;
2051 struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
2052
2053 /* DATA FRAME */
2054 rtw_led_control(padapter, LED_CTL_RX);
2055
2056 prframe = decryptor(padapter, prframe);
2057 if (prframe == NULL) {
2058 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("decryptor: drop pkt\n"));
2059 ret = _FAIL;
2060 goto _recv_data_drop;
2061 }
2062
2063 prframe = recvframe_chk_defrag(padapter, prframe);
2064 if (prframe == NULL) {
2065 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvframe_chk_defrag: drop pkt\n"));
2066 goto _recv_data_drop;
2067 }
2068
2069 prframe = portctrl(padapter, prframe);
2070 if (prframe == NULL) {
2071 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("portctrl: drop pkt\n"));
2072 ret = _FAIL;
2073 goto _recv_data_drop;
2074 }
2075
2076 count_rx_stats(padapter, prframe, NULL);
2077
2078 ret = process_recv_indicatepkts(padapter, prframe);
2079 if (ret != _SUCCESS) {
2080 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recv_func: process_recv_indicatepkts fail!\n"));
2081 rtw_free_recvframe(orig_prframe, pfree_recv_queue);/* free this recv_frame */
2082 goto _recv_data_drop;
2083 }
2084 return ret;
2085
2086_recv_data_drop:
2087 precvpriv->rx_drop++;
2088 return ret;
2089}
2090
2091static int recv_func(struct adapter *padapter, struct recv_frame *rframe)
2092{
2093 int ret;
2094 struct rx_pkt_attrib *prxattrib = &rframe->attrib;
2095 struct security_priv *psecuritypriv = &padapter->securitypriv;
2096 struct mlme_priv *mlmepriv = &padapter->mlmepriv;
2097 struct recv_priv *recvpriv = &padapter->recvpriv;
2098
2099 /* check if need to handle uc_swdec_pending_queue*/
2100 if (check_fwstate(mlmepriv, WIFI_STATION_STATE) &&
2101 psecuritypriv->busetkipkey) {
2102 struct recv_frame *pending_frame;
2103 int cnt = 0;
2104
2105 pending_frame = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue);
2106 while (pending_frame) {
2107 cnt++;
2108 recv_func_posthandle(padapter, pending_frame);
2109 }
2110 }
2111
2112 ret = recv_func_prehandle(padapter, rframe);
2113
2114 if (ret == _SUCCESS) {
2115 /* check if need to enqueue into uc_swdec_pending_queue*/
2116 if (check_fwstate(mlmepriv, WIFI_STATION_STATE) &&
2117 !IS_MCAST(prxattrib->ra) && prxattrib->encrypt > 0 &&
2118 (prxattrib->bdecrypted == 0 || psecuritypriv->sw_decrypt) &&
2119 psecuritypriv->ndisauthtype == Ndis802_11AuthModeWPAPSK &&
2120 !psecuritypriv->busetkipkey) {
2121 rtw_enqueue_recvframe(rframe, &padapter->recvpriv.uc_swdec_pending_queue);
2122 DBG_88E("%s: no key, enqueue uc_swdec_pending_queue\n", __func__);
2123 if (recvpriv->free_recvframe_cnt < NR_RECVFRAME/4) {
2124 /* to prevent from recvframe starvation,
2125 * get recvframe from uc_swdec_pending_queue to
2126 * free_recvframe_cnt */
2127 rframe = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue);
2128 if (rframe)
2129 goto do_posthandle;
2130 }
2131 goto exit;
2132 }
2133do_posthandle:
2134 ret = recv_func_posthandle(padapter, rframe);
2135 }
2136
2137exit:
2138 return ret;
2139}
2140
2141s32 rtw_recv_entry(struct recv_frame *precvframe)
2142{
2143 struct adapter *padapter;
2144 struct recv_priv *precvpriv;
2145 s32 ret = _SUCCESS;
2146
2147 padapter = precvframe->adapter;
2148
2149 precvpriv = &padapter->recvpriv;
2150
2151 ret = recv_func(padapter, precvframe);
2152 if (ret == _FAIL) {
2153 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("rtw_recv_entry: recv_func return fail!!!\n"));
2154 goto _recv_entry_drop;
2155 }
2156
2157 precvpriv->rx_pkts++;
2158
2159 return ret;
2160
2161_recv_entry_drop:
2162
2163 if (padapter->registrypriv.mp_mode == 1)
2164 padapter->mppriv.rx_pktloss = precvpriv->rx_drop;
2165
2166 return ret;
2167}
2168
15865124 2169void rtw_signal_stat_timer_hdl(struct timer_list *t)
15865124 2170{
15865124 2171 struct adapter *adapter = from_timer(adapter, t, recvpriv.signal_stat_timer);
15865124
PP		 2172 struct recv_priv *recvpriv = &adapter->recvpriv;
2173
2174 u32 tmp_s, tmp_q;
2175 u8 avg_signal_strength = 0;
2176 u8 avg_signal_qual = 0;
2177 u8 _alpha = 3; /* this value is based on converging_constant = 5000 and sampling_interval = 1000 */
2178
2179 if (adapter->recvpriv.is_signal_dbg) {
2180 /* update the user specific value, signal_strength_dbg, to signal_strength, rssi */
2181 adapter->recvpriv.signal_strength = adapter->recvpriv.signal_strength_dbg;
2182 adapter->recvpriv.rssi = (s8)translate_percentage_to_dbm((u8)adapter->recvpriv.signal_strength_dbg);
2183 } else {
2184 if (recvpriv->signal_strength_data.update_req == 0) {/* update_req is clear, means we got rx */
2185 avg_signal_strength = recvpriv->signal_strength_data.avg_val;
2186 /* after avg_vals are accquired, we can re-stat the signal values */
2187 recvpriv->signal_strength_data.update_req = 1;
2188 }
2189
2190 if (recvpriv->signal_qual_data.update_req == 0) {/* update_req is clear, means we got rx */
2191 avg_signal_qual = recvpriv->signal_qual_data.avg_val;
2192 /* after avg_vals are accquired, we can re-stat the signal values */
2193 recvpriv->signal_qual_data.update_req = 1;
2194 }
2195
2196 /* update value of signal_strength, rssi, signal_qual */
2197 if (check_fwstate(&adapter->mlmepriv, _FW_UNDER_SURVEY) == false) {
2198 tmp_s = (avg_signal_strength+(_alpha-1)*recvpriv->signal_strength);
2199 if (tmp_s % _alpha)
2200 tmp_s = tmp_s/_alpha + 1;
2201 else
2202 tmp_s = tmp_s/_alpha;
2203 if (tmp_s > 100)
2204 tmp_s = 100;
2205
2206 tmp_q = (avg_signal_qual+(_alpha-1)*recvpriv->signal_qual);
2207 if (tmp_q % _alpha)
2208 tmp_q = tmp_q/_alpha + 1;
2209 else
2210 tmp_q = tmp_q/_alpha;
2211 if (tmp_q > 100)
2212 tmp_q = 100;
2213
2214 recvpriv->signal_strength = tmp_s;
2215 recvpriv->rssi = (s8)translate_percentage_to_dbm(tmp_s);
2216 recvpriv->signal_qual = tmp_q;
2217 }
2218 }
2219 rtw_set_signal_stat_timer(recvpriv);
2220}
Linux 6.x block layer and io_uring tree(s)