1 // SPDX-License-Identifier: GPL-2.0
2 /******************************************************************************
3 *
4 * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
5 *
6 ******************************************************************************/
7 #define _RTW_RECV_C_
8
9 #include <drv_types.h>
10 #include <rtw_debug.h>
11 #include <linux/jiffies.h>
12 #include <rtw_recv.h>
13
14 static u8 SNAP_ETH_TYPE_IPX[2] = {0x81, 0x37};
15 static u8 SNAP_ETH_TYPE_APPLETALK_AARP[2] = {0x80, 0xf3};
16
17 u8 rtw_rfc1042_header[] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
18 /* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
19 u8 rtw_bridge_tunnel_header[] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
20
21 static void rtw_signal_stat_timer_hdl(struct timer_list *t);
22
_rtw_init_sta_recv_priv(struct sta_recv_priv * psta_recvpriv)23 void _rtw_init_sta_recv_priv(struct sta_recv_priv *psta_recvpriv)
24 {
25 memset((u8 *)psta_recvpriv, 0, sizeof(struct sta_recv_priv));
26
27 spin_lock_init(&psta_recvpriv->lock);
28
29 /* for (i = 0; i<MAX_RX_NUMBLKS; i++) */
30 /* _rtw_init_queue(&psta_recvpriv->blk_strms[i]); */
31
32 _rtw_init_queue(&psta_recvpriv->defrag_q);
33 }
34
_rtw_init_recv_priv(struct recv_priv * precvpriv,struct adapter * padapter)35 sint _rtw_init_recv_priv(struct recv_priv *precvpriv, struct adapter *padapter)
36 {
37 sint i;
38 union recv_frame *precvframe;
39 sint res = _SUCCESS;
40
41 spin_lock_init(&precvpriv->lock);
42
43 _rtw_init_queue(&precvpriv->free_recv_queue);
44 _rtw_init_queue(&precvpriv->recv_pending_queue);
45 _rtw_init_queue(&precvpriv->uc_swdec_pending_queue);
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 == NULL) {
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 res = 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 if (precvpriv->pallocated_frame_buf)
101 vfree(precvpriv->pallocated_frame_buf);
102
103 rtw_hal_free_recv_priv(padapter);
104 }
105
_rtw_alloc_recvframe(struct __queue * pfree_recv_queue)106 union recv_frame *_rtw_alloc_recvframe(struct __queue *pfree_recv_queue)
107 {
108
109 union recv_frame *precvframe;
110 struct list_head *plist, *phead;
111 struct adapter *padapter;
112 struct recv_priv *precvpriv;
113
114 if (list_empty(&pfree_recv_queue->queue))
115 precvframe = NULL;
116 else{
117 phead = get_list_head(pfree_recv_queue);
118
119 plist = get_next(phead);
120
121 precvframe = (union recv_frame *)plist;
122
123 list_del_init(&precvframe->u.hdr.list);
124 padapter = precvframe->u.hdr.adapter;
125 if (padapter != NULL) {
126 precvpriv = &padapter->recvpriv;
127 if (pfree_recv_queue == &precvpriv->free_recv_queue)
128 precvpriv->free_recvframe_cnt--;
129 }
130 }
131 return precvframe;
132 }
133
rtw_alloc_recvframe(struct __queue * pfree_recv_queue)134 union recv_frame *rtw_alloc_recvframe(struct __queue *pfree_recv_queue)
135 {
136 union recv_frame *precvframe;
137
138 spin_lock_bh(&pfree_recv_queue->lock);
139
140 precvframe = _rtw_alloc_recvframe(pfree_recv_queue);
141
142 spin_unlock_bh(&pfree_recv_queue->lock);
143
144 return precvframe;
145 }
146
rtw_free_recvframe(union recv_frame * precvframe,struct __queue * pfree_recv_queue)147 int rtw_free_recvframe(union recv_frame *precvframe, struct __queue *pfree_recv_queue)
148 {
149 struct adapter *padapter = precvframe->u.hdr.adapter;
150 struct recv_priv *precvpriv = &padapter->recvpriv;
151
152 rtw_os_free_recvframe(precvframe);
153
154
155 spin_lock_bh(&pfree_recv_queue->lock);
156
157 list_del_init(&(precvframe->u.hdr.list));
158
159 precvframe->u.hdr.len = 0;
160
161 list_add_tail(&(precvframe->u.hdr.list), get_list_head(pfree_recv_queue));
162
163 if (padapter != NULL) {
164 if (pfree_recv_queue == &precvpriv->free_recv_queue)
165 precvpriv->free_recvframe_cnt++;
166 }
167 spin_unlock_bh(&pfree_recv_queue->lock);
168 return _SUCCESS;
169 }
170
171
172
173
_rtw_enqueue_recvframe(union recv_frame * precvframe,struct __queue * queue)174 sint _rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue)
175 {
176
177 struct adapter *padapter = precvframe->u.hdr.adapter;
178 struct recv_priv *precvpriv = &padapter->recvpriv;
179
180 /* INIT_LIST_HEAD(&(precvframe->u.hdr.list)); */
181 list_del_init(&(precvframe->u.hdr.list));
182
183
184 list_add_tail(&(precvframe->u.hdr.list), get_list_head(queue));
185
186 if (padapter != NULL)
187 if (queue == &precvpriv->free_recv_queue)
188 precvpriv->free_recvframe_cnt++;
189
190 return _SUCCESS;
191 }
192
rtw_enqueue_recvframe(union recv_frame * precvframe,struct __queue * queue)193 sint rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue)
194 {
195 sint ret;
196
197 /* _spinlock(&pfree_recv_queue->lock); */
198 spin_lock_bh(&queue->lock);
199 ret = _rtw_enqueue_recvframe(precvframe, queue);
200 /* spin_unlock(&pfree_recv_queue->lock); */
201 spin_unlock_bh(&queue->lock);
202
203 return ret;
204 }
205
206 /*
207 sint rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue)
208 {
209 return rtw_free_recvframe(precvframe, queue);
210 }
211 */
212
213
214
215
216 /*
217 caller : defrag ; recvframe_chk_defrag in recv_thread (passive)
218 pframequeue: defrag_queue : will be accessed in recv_thread (passive)
219
220 using spinlock to protect
221
222 */
223
rtw_free_recvframe_queue(struct __queue * pframequeue,struct __queue * pfree_recv_queue)224 void rtw_free_recvframe_queue(struct __queue *pframequeue, struct __queue *pfree_recv_queue)
225 {
226 union recv_frame *precvframe;
227 struct list_head *plist, *phead;
228
229 spin_lock(&pframequeue->lock);
230
231 phead = get_list_head(pframequeue);
232 plist = get_next(phead);
233
234 while (phead != plist) {
235 precvframe = (union recv_frame *)plist;
236
237 plist = get_next(plist);
238
239 rtw_free_recvframe(precvframe, pfree_recv_queue);
240 }
241
242 spin_unlock(&pframequeue->lock);
243 }
244
rtw_free_uc_swdec_pending_queue(struct adapter * adapter)245 u32 rtw_free_uc_swdec_pending_queue(struct adapter *adapter)
246 {
247 u32 cnt = 0;
248 union recv_frame *pending_frame;
249 while ((pending_frame = rtw_alloc_recvframe(&adapter->recvpriv.uc_swdec_pending_queue))) {
250 rtw_free_recvframe(pending_frame, &adapter->recvpriv.free_recv_queue);
251 cnt++;
252 }
253
254 if (cnt)
255 DBG_871X(FUNC_ADPT_FMT" dequeue %d\n", FUNC_ADPT_ARG(adapter), cnt);
256
257 return cnt;
258 }
259
260
rtw_enqueue_recvbuf_to_head(struct recv_buf * precvbuf,struct __queue * queue)261 sint rtw_enqueue_recvbuf_to_head(struct recv_buf *precvbuf, struct __queue *queue)
262 {
263 spin_lock_bh(&queue->lock);
264
265 list_del_init(&precvbuf->list);
266 list_add(&precvbuf->list, get_list_head(queue));
267
268 spin_unlock_bh(&queue->lock);
269
270 return _SUCCESS;
271 }
272
rtw_enqueue_recvbuf(struct recv_buf * precvbuf,struct __queue * queue)273 sint rtw_enqueue_recvbuf(struct recv_buf *precvbuf, struct __queue *queue)
274 {
275 spin_lock_bh(&queue->lock);
276
277 list_del_init(&precvbuf->list);
278
279 list_add_tail(&precvbuf->list, get_list_head(queue));
280 spin_unlock_bh(&queue->lock);
281 return _SUCCESS;
282
283 }
284
rtw_dequeue_recvbuf(struct __queue * queue)285 struct recv_buf *rtw_dequeue_recvbuf(struct __queue *queue)
286 {
287 struct recv_buf *precvbuf;
288 struct list_head *plist, *phead;
289
290 spin_lock_bh(&queue->lock);
291
292 if (list_empty(&queue->queue))
293 precvbuf = NULL;
294 else{
295 phead = get_list_head(queue);
296
297 plist = get_next(phead);
298
299 precvbuf = LIST_CONTAINOR(plist, struct recv_buf, list);
300
301 list_del_init(&precvbuf->list);
302
303 }
304
305 spin_unlock_bh(&queue->lock);
306
307 return precvbuf;
308
309 }
310
311 sint recvframe_chkmic(struct adapter *adapter, union recv_frame *precvframe);
recvframe_chkmic(struct adapter * adapter,union recv_frame * precvframe)312 sint recvframe_chkmic(struct adapter *adapter, union recv_frame *precvframe)
313 {
314
315 sint i, res = _SUCCESS;
316 u32 datalen;
317 u8 miccode[8];
318 u8 bmic_err = false, brpt_micerror = true;
319 u8 *pframe, *payload, *pframemic;
320 u8 *mickey;
321 /* u8 *iv, rxdata_key_idx = 0; */
322 struct sta_info *stainfo;
323 struct rx_pkt_attrib *prxattrib = &precvframe->u.hdr.attrib;
324 struct security_priv *psecuritypriv = &adapter->securitypriv;
325
326 struct mlme_ext_priv *pmlmeext = &adapter->mlmeextpriv;
327 struct mlme_ext_info *pmlmeinfo = &(pmlmeext->mlmext_info);
328
329 stainfo = rtw_get_stainfo(&adapter->stapriv, &prxattrib->ta[0]);
330
331 if (prxattrib->encrypt == _TKIP_) {
332 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n recvframe_chkmic:prxattrib->encrypt == _TKIP_\n"));
333 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",
334 prxattrib->ra[0], prxattrib->ra[1], prxattrib->ra[2], prxattrib->ra[3], prxattrib->ra[4], prxattrib->ra[5]));
335
336 /* calculate mic code */
337 if (stainfo != NULL) {
338 if (IS_MCAST(prxattrib->ra)) {
339 /* mickey =&psecuritypriv->dot118021XGrprxmickey.skey[0]; */
340 /* iv = precvframe->u.hdr.rx_data+prxattrib->hdrlen; */
341 /* rxdata_key_idx =(((iv[3])>>6)&0x3) ; */
342 mickey = &psecuritypriv->dot118021XGrprxmickey[prxattrib->key_index].skey[0];
343
344 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n recvframe_chkmic: bcmc key\n"));
345 /* DBG_871X("\n recvframe_chkmic: bcmc key psecuritypriv->dot118021XGrpKeyid(%d), pmlmeinfo->key_index(%d) , recv key_id(%d)\n", */
346 /* psecuritypriv->dot118021XGrpKeyid, pmlmeinfo->key_index, rxdata_key_idx); */
347
348 if (psecuritypriv->binstallGrpkey == false) {
349 res = _FAIL;
350 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("\n recvframe_chkmic:didn't install group key!!!!!!!!!!\n"));
351 DBG_871X("\n recvframe_chkmic:didn't install group key!!!!!!!!!!\n");
352 goto exit;
353 }
354 } else {
355 mickey = &stainfo->dot11tkiprxmickey.skey[0];
356 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("\n recvframe_chkmic: unicast key\n"));
357 }
358
359 datalen = precvframe->u.hdr.len-prxattrib->hdrlen-prxattrib->iv_len-prxattrib->icv_len-8;/* icv_len included the mic code */
360 pframe = precvframe->u.hdr.rx_data;
361 payload = pframe+prxattrib->hdrlen+prxattrib->iv_len;
362
363 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n prxattrib->iv_len =%d prxattrib->icv_len =%d\n", prxattrib->iv_len, prxattrib->icv_len));
364
365
366 rtw_seccalctkipmic(mickey, pframe, payload, datalen, &miccode[0], (unsigned char)prxattrib->priority); /* care the length of the data */
367
368 pframemic = payload+datalen;
369
370 bmic_err = false;
371
372 for (i = 0; i < 8; i++) {
373 if (miccode[i] != *(pframemic+i)) {
374 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvframe_chkmic:miccode[%d](%02x) != *(pframemic+%d)(%02x) ", i, miccode[i], i, *(pframemic+i)));
375 bmic_err = true;
376 }
377 }
378
379
380 if (bmic_err == true) {
381
382 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("\n *(pframemic-8)-*(pframemic-1) = 0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x\n",
383 *(pframemic-8), *(pframemic-7), *(pframemic-6), *(pframemic-5), *(pframemic-4), *(pframemic-3), *(pframemic-2), *(pframemic-1)));
384 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("\n *(pframemic-16)-*(pframemic-9) = 0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x\n",
385 *(pframemic-16), *(pframemic-15), *(pframemic-14), *(pframemic-13), *(pframemic-12), *(pframemic-11), *(pframemic-10), *(pframemic-9)));
386
387 {
388 uint i;
389 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("\n ======demp packet (len =%d) ======\n", precvframe->u.hdr.len));
390 for (i = 0; i < precvframe->u.hdr.len; i = i+8) {
391 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x",
392 *(precvframe->u.hdr.rx_data+i), *(precvframe->u.hdr.rx_data+i+1),
393 *(precvframe->u.hdr.rx_data+i+2), *(precvframe->u.hdr.rx_data+i+3),
394 *(precvframe->u.hdr.rx_data+i+4), *(precvframe->u.hdr.rx_data+i+5),
395 *(precvframe->u.hdr.rx_data+i+6), *(precvframe->u.hdr.rx_data+i+7)));
396 }
397 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("\n ======demp packet end [len =%d]======\n", precvframe->u.hdr.len));
398 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("\n hrdlen =%d,\n", prxattrib->hdrlen));
399 }
400
401 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("ra = 0x%.2x 0x%.2x 0x%.2x 0x%.2x 0x%.2x 0x%.2x psecuritypriv->binstallGrpkey =%d ",
402 prxattrib->ra[0], prxattrib->ra[1], prxattrib->ra[2],
403 prxattrib->ra[3], prxattrib->ra[4], prxattrib->ra[5], psecuritypriv->binstallGrpkey));
404
405 /* double check key_index for some timing issue , */
406 /* cannot compare with psecuritypriv->dot118021XGrpKeyid also cause timing issue */
407 if ((IS_MCAST(prxattrib->ra) == true) && (prxattrib->key_index != pmlmeinfo->key_index))
408 brpt_micerror = false;
409
410 if ((prxattrib->bdecrypted == true) && (brpt_micerror == true)) {
411 rtw_handle_tkip_mic_err(adapter, (u8)IS_MCAST(prxattrib->ra));
412 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" mic error :prxattrib->bdecrypted =%d ", prxattrib->bdecrypted));
413 DBG_871X(" mic error :prxattrib->bdecrypted =%d\n", prxattrib->bdecrypted);
414 } else{
415 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" mic error :prxattrib->bdecrypted =%d ", prxattrib->bdecrypted));
416 DBG_871X(" mic error :prxattrib->bdecrypted =%d\n", prxattrib->bdecrypted);
417 }
418
419 res = _FAIL;
420
421 } else {
422 /* mic checked ok */
423 if ((psecuritypriv->bcheck_grpkey == false) && (IS_MCAST(prxattrib->ra) == true)) {
424 psecuritypriv->bcheck_grpkey = true;
425 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("psecuritypriv->bcheck_grpkey =true"));
426 }
427 }
428
429 } else
430 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvframe_chkmic: rtw_get_stainfo == NULL!!!\n"));
431
432 recvframe_pull_tail(precvframe, 8);
433
434 }
435
436 exit:
437 return res;
438
439 }
440
441 /* decrypt and set the ivlen, icvlen of the recv_frame */
442 union recv_frame *decryptor(struct adapter *padapter, union recv_frame *precv_frame);
decryptor(struct adapter * padapter,union recv_frame * precv_frame)443 union recv_frame *decryptor(struct adapter *padapter, union recv_frame *precv_frame)
444 {
445
446 struct rx_pkt_attrib *prxattrib = &precv_frame->u.hdr.attrib;
447 struct security_priv *psecuritypriv = &padapter->securitypriv;
448 union recv_frame *return_packet = precv_frame;
449 u32 res = _SUCCESS;
450
451 DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt);
452
453 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("prxstat->decrypted =%x prxattrib->encrypt = 0x%03x\n", prxattrib->bdecrypted, prxattrib->encrypt));
454
455 if (prxattrib->encrypt > 0) {
456 u8 *iv = precv_frame->u.hdr.rx_data+prxattrib->hdrlen;
457 prxattrib->key_index = (((iv[3])>>6)&0x3);
458
459 if (prxattrib->key_index > WEP_KEYS) {
460 DBG_871X("prxattrib->key_index(%d) > WEP_KEYS\n", prxattrib->key_index);
461
462 switch (prxattrib->encrypt) {
463 case _WEP40_:
464 case _WEP104_:
465 prxattrib->key_index = psecuritypriv->dot11PrivacyKeyIndex;
466 break;
467 case _TKIP_:
468 case _AES_:
469 default:
470 prxattrib->key_index = psecuritypriv->dot118021XGrpKeyid;
471 break;
472 }
473 }
474 }
475
476 if ((prxattrib->encrypt > 0) && ((prxattrib->bdecrypted == 0) || (psecuritypriv->sw_decrypt == true))) {
477 psecuritypriv->hw_decrypted = false;
478
479 #ifdef DBG_RX_DECRYPTOR
480 DBG_871X("[%s] %d:prxstat->bdecrypted:%d, prxattrib->encrypt:%d, Setting psecuritypriv->hw_decrypted = %d\n",
481 __func__,
482 __LINE__,
483 prxattrib->bdecrypted,
484 prxattrib->encrypt,
485 psecuritypriv->hw_decrypted);
486 #endif
487
488 switch (prxattrib->encrypt) {
489 case _WEP40_:
490 case _WEP104_:
491 DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt_wep);
492 rtw_wep_decrypt(padapter, (u8 *)precv_frame);
493 break;
494 case _TKIP_:
495 DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt_tkip);
496 res = rtw_tkip_decrypt(padapter, (u8 *)precv_frame);
497 break;
498 case _AES_:
499 DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt_aes);
500 res = rtw_aes_decrypt(padapter, (u8 *)precv_frame);
501 break;
502 default:
503 break;
504 }
505 } else if (prxattrib->bdecrypted == 1
506 && prxattrib->encrypt > 0
507 && (psecuritypriv->busetkipkey == 1 || prxattrib->encrypt != _TKIP_)
508 ) {
509 DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt_hw);
510
511 psecuritypriv->hw_decrypted = true;
512 #ifdef DBG_RX_DECRYPTOR
513 DBG_871X("[%s] %d:prxstat->bdecrypted:%d, prxattrib->encrypt:%d, Setting psecuritypriv->hw_decrypted = %d\n",
514 __func__,
515 __LINE__,
516 prxattrib->bdecrypted,
517 prxattrib->encrypt,
518 psecuritypriv->hw_decrypted);
519
520 #endif
521 } else {
522 DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt_unknown);
523 #ifdef DBG_RX_DECRYPTOR
524 DBG_871X("[%s] %d:prxstat->bdecrypted:%d, prxattrib->encrypt:%d, Setting psecuritypriv->hw_decrypted = %d\n",
525 __func__,
526 __LINE__,
527 prxattrib->bdecrypted,
528 prxattrib->encrypt,
529 psecuritypriv->hw_decrypted);
530 #endif
531 }
532
533 if (res == _FAIL) {
534 rtw_free_recvframe(return_packet, &padapter->recvpriv.free_recv_queue);
535 return_packet = NULL;
536 } else
537 prxattrib->bdecrypted = true;
538
539 return return_packet;
540 }
541
542 /* set the security information in the recv_frame */
543 union recv_frame *portctrl(struct adapter *adapter, union recv_frame *precv_frame);
portctrl(struct adapter * adapter,union recv_frame * precv_frame)544 union recv_frame *portctrl(struct adapter *adapter, union recv_frame *precv_frame)
545 {
546 u8 *psta_addr = NULL;
547 u8 *ptr;
548 uint auth_alg;
549 struct recv_frame_hdr *pfhdr;
550 struct sta_info *psta;
551 struct sta_priv *pstapriv;
552 union recv_frame *prtnframe;
553 u16 ether_type = 0;
554 u16 eapol_type = 0x888e;/* for Funia BD's WPA issue */
555 struct rx_pkt_attrib *pattrib;
556
557 pstapriv = &adapter->stapriv;
558
559 auth_alg = adapter->securitypriv.dot11AuthAlgrthm;
560
561 ptr = get_recvframe_data(precv_frame);
562 pfhdr = &precv_frame->u.hdr;
563 pattrib = &pfhdr->attrib;
564 psta_addr = pattrib->ta;
565
566 prtnframe = NULL;
567
568 psta = rtw_get_stainfo(pstapriv, psta_addr);
569
570 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########portctrl:adapter->securitypriv.dot11AuthAlgrthm =%d\n", adapter->securitypriv.dot11AuthAlgrthm));
571
572 if (auth_alg == 2) {
573 if ((psta != NULL) && (psta->ieee8021x_blocked)) {
574 __be16 be_tmp;
575
576 /* blocked */
577 /* only accept EAPOL frame */
578 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########portctrl:psta->ieee8021x_blocked == 1\n"));
579
580 prtnframe = precv_frame;
581
582 /* get ether_type */
583 ptr = ptr+pfhdr->attrib.hdrlen+pfhdr->attrib.iv_len+LLC_HEADER_SIZE;
584 memcpy(&be_tmp, ptr, 2);
585 ether_type = ntohs(be_tmp);
586
587 if (ether_type == eapol_type)
588 prtnframe = precv_frame;
589 else {
590 /* free this frame */
591 rtw_free_recvframe(precv_frame, &adapter->recvpriv.free_recv_queue);
592 prtnframe = NULL;
593 }
594 } else{
595 /* allowed */
596 /* check decryption status, and decrypt the frame if needed */
597 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########portctrl:psta->ieee8021x_blocked == 0\n"));
598 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("portctrl:precv_frame->hdr.attrib.privacy =%x\n", precv_frame->u.hdr.attrib.privacy));
599
600 if (pattrib->bdecrypted == 0)
601 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("portctrl:prxstat->decrypted =%x\n", pattrib->bdecrypted));
602
603 prtnframe = precv_frame;
604 /* check is the EAPOL frame or not (Rekey) */
605 /* if (ether_type == eapol_type) { */
606 /* RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("########portctrl:ether_type == 0x888e\n")); */
607 /* check Rekey */
608
609 /* prtnframe =precv_frame; */
610 /* */
611 /* else { */
612 /* RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########portctrl:ether_type = 0x%04x\n", ether_type)); */
613 /* */
614 }
615 } else
616 prtnframe = precv_frame;
617
618 return prtnframe;
619 }
620
621 sint recv_decache(union recv_frame *precv_frame, u8 bretry, struct stainfo_rxcache *prxcache);
recv_decache(union recv_frame * precv_frame,u8 bretry,struct stainfo_rxcache * prxcache)622 sint recv_decache(union recv_frame *precv_frame, u8 bretry, struct stainfo_rxcache *prxcache)
623 {
624 sint tid = precv_frame->u.hdr.attrib.priority;
625
626 u16 seq_ctrl = ((precv_frame->u.hdr.attrib.seq_num&0xffff) << 4) |
627 (precv_frame->u.hdr.attrib.frag_num & 0xf);
628
629 if (tid > 15) {
630 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("recv_decache, (tid>15)! seq_ctrl = 0x%x, tid = 0x%x\n", seq_ctrl, tid));
631
632 return _FAIL;
633 }
634
635 if (1) { /* if (bretry) */
636 if (seq_ctrl == prxcache->tid_rxseq[tid]) {
637 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]));
638
639 return _FAIL;
640 }
641 }
642
643 prxcache->tid_rxseq[tid] = seq_ctrl;
644
645 return _SUCCESS;
646
647 }
648
649 void process_pwrbit_data(struct adapter *padapter, union recv_frame *precv_frame);
process_pwrbit_data(struct adapter * padapter,union recv_frame * precv_frame)650 void process_pwrbit_data(struct adapter *padapter, union recv_frame *precv_frame)
651 {
652 unsigned char pwrbit;
653 u8 *ptr = precv_frame->u.hdr.rx_data;
654 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
655 struct sta_priv *pstapriv = &padapter->stapriv;
656 struct sta_info *psta = NULL;
657
658 psta = rtw_get_stainfo(pstapriv, pattrib->src);
659
660 pwrbit = GetPwrMgt(ptr);
661
662 if (psta) {
663 if (pwrbit) {
664 if (!(psta->state & WIFI_SLEEP_STATE)) {
665 /* psta->state |= WIFI_SLEEP_STATE; */
666 /* pstapriv->sta_dz_bitmap |= BIT(psta->aid); */
667
668 stop_sta_xmit(padapter, psta);
669
670 /* DBG_871X("to sleep, sta_dz_bitmap =%x\n", pstapriv->sta_dz_bitmap); */
671 }
672 } else{
673 if (psta->state & WIFI_SLEEP_STATE) {
674 /* psta->state ^= WIFI_SLEEP_STATE; */
675 /* pstapriv->sta_dz_bitmap &= ~BIT(psta->aid); */
676
677 wakeup_sta_to_xmit(padapter, psta);
678
679 /* DBG_871X("to wakeup, sta_dz_bitmap =%x\n", pstapriv->sta_dz_bitmap); */
680 }
681 }
682
683 }
684 }
685
686 void process_wmmps_data(struct adapter *padapter, union recv_frame *precv_frame);
process_wmmps_data(struct adapter * padapter,union recv_frame * precv_frame)687 void process_wmmps_data(struct adapter *padapter, union recv_frame *precv_frame)
688 {
689 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
690 struct sta_priv *pstapriv = &padapter->stapriv;
691 struct sta_info *psta = NULL;
692
693 psta = rtw_get_stainfo(pstapriv, pattrib->src);
694
695 if (!psta)
696 return;
697
698 if (!psta->qos_option)
699 return;
700
701 if (!(psta->qos_info&0xf))
702 return;
703
704 if (psta->state&WIFI_SLEEP_STATE) {
705 u8 wmmps_ac = 0;
706
707 switch (pattrib->priority) {
708 case 1:
709 case 2:
710 wmmps_ac = psta->uapsd_bk&BIT(1);
711 break;
712 case 4:
713 case 5:
714 wmmps_ac = psta->uapsd_vi&BIT(1);
715 break;
716 case 6:
717 case 7:
718 wmmps_ac = psta->uapsd_vo&BIT(1);
719 break;
720 case 0:
721 case 3:
722 default:
723 wmmps_ac = psta->uapsd_be&BIT(1);
724 break;
725 }
726
727 if (wmmps_ac) {
728 if (psta->sleepq_ac_len > 0)
729 /* process received triggered frame */
730 xmit_delivery_enabled_frames(padapter, psta);
731 else
732 /* issue one qos null frame with More data bit = 0 and the EOSP bit set (= 1) */
733 issue_qos_nulldata(padapter, psta->hwaddr, (u16)pattrib->priority, 0, 0);
734 }
735 }
736 }
737
738 void count_rx_stats(struct adapter *padapter, union recv_frame *prframe, struct sta_info *sta);
count_rx_stats(struct adapter * padapter,union recv_frame * prframe,struct sta_info * sta)739 void count_rx_stats(struct adapter *padapter, union recv_frame *prframe, struct sta_info *sta)
740 {
741 int sz;
742 struct sta_info *psta = NULL;
743 struct stainfo_stats *pstats = NULL;
744 struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib;
745 struct recv_priv *precvpriv = &padapter->recvpriv;
746
747 sz = get_recvframe_len(prframe);
748 precvpriv->rx_bytes += sz;
749
750 padapter->mlmepriv.LinkDetectInfo.NumRxOkInPeriod++;
751
752 if ((!MacAddr_isBcst(pattrib->dst)) && (!IS_MCAST(pattrib->dst))) {
753 padapter->mlmepriv.LinkDetectInfo.NumRxUnicastOkInPeriod++;
754 }
755
756 if (sta)
757 psta = sta;
758 else
759 psta = prframe->u.hdr.psta;
760
761 if (psta) {
762 pstats = &psta->sta_stats;
763
764 pstats->rx_data_pkts++;
765 pstats->rx_bytes += sz;
766 }
767
768 traffic_check_for_leave_lps(padapter, false, 0);
769 }
770
771 sint sta2sta_data_frame(
772 struct adapter *adapter,
773 union recv_frame *precv_frame,
774 struct sta_info **psta
775 );
sta2sta_data_frame(struct adapter * adapter,union recv_frame * precv_frame,struct sta_info ** psta)776 sint sta2sta_data_frame(
777 struct adapter *adapter,
778 union recv_frame *precv_frame,
779 struct sta_info **psta
780 )
781 {
782 u8 *ptr = precv_frame->u.hdr.rx_data;
783 sint ret = _SUCCESS;
784 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
785 struct sta_priv *pstapriv = &adapter->stapriv;
786 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
787 u8 *mybssid = get_bssid(pmlmepriv);
788 u8 *myhwaddr = myid(&adapter->eeprompriv);
789 u8 *sta_addr = NULL;
790 sint bmcast = IS_MCAST(pattrib->dst);
791
792 /* DBG_871X("[%s] %d, seqnum:%d\n", __func__, __LINE__, pattrib->seq_num); */
793
794 if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true) ||
795 (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) == true)) {
796
797 /* filter packets that SA is myself or multicast or broadcast */
798 if (!memcmp(myhwaddr, pattrib->src, ETH_ALEN)) {
799 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" SA ==myself\n"));
800 ret = _FAIL;
801 goto exit;
802 }
803
804 if ((memcmp(myhwaddr, pattrib->dst, ETH_ALEN)) && (!bmcast)) {
805 ret = _FAIL;
806 goto exit;
807 }
808
809 if (!memcmp(pattrib->bssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
810 !memcmp(mybssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
811 (memcmp(pattrib->bssid, mybssid, ETH_ALEN))) {
812 ret = _FAIL;
813 goto exit;
814 }
815
816 sta_addr = pattrib->src;
817
818 } else if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true) {
819 /* For Station mode, sa and bssid should always be BSSID, and DA is my mac-address */
820 if (memcmp(pattrib->bssid, pattrib->src, ETH_ALEN)) {
821 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("bssid != TA under STATION_MODE; drop pkt\n"));
822 ret = _FAIL;
823 goto exit;
824 }
825
826 sta_addr = pattrib->bssid;
827 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
828 if (bmcast) {
829 /* For AP mode, if DA == MCAST, then BSSID should be also MCAST */
830 if (!IS_MCAST(pattrib->bssid)) {
831 ret = _FAIL;
832 goto exit;
833 }
834 } else{ /* not mc-frame */
835 /* For AP mode, if DA is non-MCAST, then it must be BSSID, and bssid == BSSID */
836 if (memcmp(pattrib->bssid, pattrib->dst, ETH_ALEN)) {
837 ret = _FAIL;
838 goto exit;
839 }
840
841 sta_addr = pattrib->src;
842 }
843
844 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
845 memcpy(pattrib->dst, GetAddr1Ptr(ptr), ETH_ALEN);
846 memcpy(pattrib->src, GetAddr2Ptr(ptr), ETH_ALEN);
847 memcpy(pattrib->bssid, GetAddr3Ptr(ptr), ETH_ALEN);
848 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
849 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
850
851 sta_addr = mybssid;
852 } else
853 ret = _FAIL;
854
855
856
857 if (bmcast)
858 *psta = rtw_get_bcmc_stainfo(adapter);
859 else
860 *psta = rtw_get_stainfo(pstapriv, sta_addr); /* get ap_info */
861
862 if (*psta == NULL) {
863 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("can't get psta under sta2sta_data_frame ; drop pkt\n"));
864 ret = _FAIL;
865 goto exit;
866 }
867
868 exit:
869 return ret;
870 }
871
872 sint ap2sta_data_frame(
873 struct adapter *adapter,
874 union recv_frame *precv_frame,
875 struct sta_info **psta);
ap2sta_data_frame(struct adapter * adapter,union recv_frame * precv_frame,struct sta_info ** psta)876 sint ap2sta_data_frame(
877 struct adapter *adapter,
878 union recv_frame *precv_frame,
879 struct sta_info **psta)
880 {
881 u8 *ptr = precv_frame->u.hdr.rx_data;
882 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
883 sint ret = _SUCCESS;
884 struct sta_priv *pstapriv = &adapter->stapriv;
885 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
886 u8 *mybssid = get_bssid(pmlmepriv);
887 u8 *myhwaddr = myid(&adapter->eeprompriv);
888 sint bmcast = IS_MCAST(pattrib->dst);
889
890 if ((check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true)
891 && (check_fwstate(pmlmepriv, _FW_LINKED) == true
892 || check_fwstate(pmlmepriv, _FW_UNDER_LINKING) == true)
893 ) {
894
895 /* filter packets that SA is myself or multicast or broadcast */
896 if (!memcmp(myhwaddr, pattrib->src, ETH_ALEN)) {
897 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" SA ==myself\n"));
898 #ifdef DBG_RX_DROP_FRAME
899 DBG_871X("DBG_RX_DROP_FRAME %s SA ="MAC_FMT", myhwaddr ="MAC_FMT"\n",
900 __func__, MAC_ARG(pattrib->src), MAC_ARG(myhwaddr));
901 #endif
902 ret = _FAIL;
903 goto exit;
904 }
905
906 /* da should be for me */
907 if ((memcmp(myhwaddr, pattrib->dst, ETH_ALEN)) && (!bmcast)) {
908 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
909 (" ap2sta_data_frame: compare DA fail; DA ="MAC_FMT"\n", MAC_ARG(pattrib->dst)));
910 #ifdef DBG_RX_DROP_FRAME
911 DBG_871X("DBG_RX_DROP_FRAME %s DA ="MAC_FMT"\n", __func__, MAC_ARG(pattrib->dst));
912 #endif
913 ret = _FAIL;
914 goto exit;
915 }
916
917
918 /* check BSSID */
919 if (!memcmp(pattrib->bssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
920 !memcmp(mybssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
921 (memcmp(pattrib->bssid, mybssid, ETH_ALEN))) {
922 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
923 (" ap2sta_data_frame: compare BSSID fail ; BSSID ="MAC_FMT"\n", MAC_ARG(pattrib->bssid)));
924 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("mybssid ="MAC_FMT"\n", MAC_ARG(mybssid)));
925 #ifdef DBG_RX_DROP_FRAME
926 DBG_871X("DBG_RX_DROP_FRAME %s BSSID ="MAC_FMT", mybssid ="MAC_FMT"\n",
927 __func__, MAC_ARG(pattrib->bssid), MAC_ARG(mybssid));
928 DBG_871X("this adapter = %d, buddy adapter = %d\n", adapter->adapter_type, adapter->pbuddystruct adapter->adapter_type);
929 #endif
930
931 if (!bmcast) {
932 DBG_871X("issue_deauth to the nonassociated ap =" MAC_FMT " for the reason(7)\n", MAC_ARG(pattrib->bssid));
933 issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
934 }
935
936 ret = _FAIL;
937 goto exit;
938 }
939
940 if (bmcast)
941 *psta = rtw_get_bcmc_stainfo(adapter);
942 else
943 *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get ap_info */
944
945 if (*psta == NULL) {
946 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("ap2sta: can't get psta under STATION_MODE ; drop pkt\n"));
947 #ifdef DBG_RX_DROP_FRAME
948 DBG_871X("DBG_RX_DROP_FRAME %s can't get psta under STATION_MODE ; drop pkt\n", __func__);
949 #endif
950 ret = _FAIL;
951 goto exit;
952 }
953
954 if ((GetFrameSubType(ptr) & WIFI_QOS_DATA_TYPE) == WIFI_QOS_DATA_TYPE) {
955 }
956
957 if (GetFrameSubType(ptr) & BIT(6)) {
958 /* No data, will not indicate to upper layer, temporily count it here */
959 count_rx_stats(adapter, precv_frame, *psta);
960 ret = RTW_RX_HANDLED;
961 goto exit;
962 }
963
964 } else if ((check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) &&
965 (check_fwstate(pmlmepriv, _FW_LINKED) == true)) {
966 memcpy(pattrib->dst, GetAddr1Ptr(ptr), ETH_ALEN);
967 memcpy(pattrib->src, GetAddr2Ptr(ptr), ETH_ALEN);
968 memcpy(pattrib->bssid, GetAddr3Ptr(ptr), ETH_ALEN);
969 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
970 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
971
972 /* */
973 memcpy(pattrib->bssid, mybssid, ETH_ALEN);
974
975
976 *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get sta_info */
977 if (*psta == NULL) {
978 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("can't get psta under MP_MODE ; drop pkt\n"));
979 #ifdef DBG_RX_DROP_FRAME
980 DBG_871X("DBG_RX_DROP_FRAME %s can't get psta under WIFI_MP_STATE ; drop pkt\n", __func__);
981 #endif
982 ret = _FAIL;
983 goto exit;
984 }
985
986
987 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
988 /* Special case */
989 ret = RTW_RX_HANDLED;
990 goto exit;
991 } else{
992 if (!memcmp(myhwaddr, pattrib->dst, ETH_ALEN) && (!bmcast)) {
993 *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get sta_info */
994 if (*psta == NULL) {
995
996 /* for AP multicast issue , modify by yiwei */
997 static unsigned long send_issue_deauth_time;
998
999 /* DBG_871X("After send deauth , %u ms has elapsed.\n", jiffies_to_msecs(jiffies - send_issue_deauth_time)); */
1000
1001 if (jiffies_to_msecs(jiffies - send_issue_deauth_time) > 10000 || send_issue_deauth_time == 0) {
1002 send_issue_deauth_time = jiffies;
1003
1004 DBG_871X("issue_deauth to the ap =" MAC_FMT " for the reason(7)\n", MAC_ARG(pattrib->bssid));
1005
1006 issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1007 }
1008 }
1009 }
1010
1011 ret = _FAIL;
1012 #ifdef DBG_RX_DROP_FRAME
1013 DBG_871X("DBG_RX_DROP_FRAME %s fw_state:0x%x\n", __func__, get_fwstate(pmlmepriv));
1014 #endif
1015 }
1016
1017 exit:
1018 return ret;
1019 }
1020
1021 sint sta2ap_data_frame(
1022 struct adapter *adapter,
1023 union recv_frame *precv_frame,
1024 struct sta_info **psta);
sta2ap_data_frame(struct adapter * adapter,union recv_frame * precv_frame,struct sta_info ** psta)1025 sint sta2ap_data_frame(
1026 struct adapter *adapter,
1027 union recv_frame *precv_frame,
1028 struct sta_info **psta)
1029 {
1030 u8 *ptr = precv_frame->u.hdr.rx_data;
1031 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
1032 struct sta_priv *pstapriv = &adapter->stapriv;
1033 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
1034 unsigned char *mybssid = get_bssid(pmlmepriv);
1035 sint ret = _SUCCESS;
1036
1037 if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
1038 /* For AP mode, RA =BSSID, TX =STA(SRC_ADDR), A3 =DST_ADDR */
1039 if (memcmp(pattrib->bssid, mybssid, ETH_ALEN)) {
1040 ret = _FAIL;
1041 goto exit;
1042 }
1043
1044 *psta = rtw_get_stainfo(pstapriv, pattrib->src);
1045 if (*psta == NULL) {
1046 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("can't get psta under AP_MODE; drop pkt\n"));
1047 DBG_871X("issue_deauth to sta =" MAC_FMT " for the reason(7)\n", MAC_ARG(pattrib->src));
1048
1049 issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1050
1051 ret = RTW_RX_HANDLED;
1052 goto exit;
1053 }
1054
1055 process_pwrbit_data(adapter, precv_frame);
1056
1057 if ((GetFrameSubType(ptr) & WIFI_QOS_DATA_TYPE) == WIFI_QOS_DATA_TYPE) {
1058 process_wmmps_data(adapter, precv_frame);
1059 }
1060
1061 if (GetFrameSubType(ptr) & BIT(6)) {
1062 /* No data, will not indicate to upper layer, temporily count it here */
1063 count_rx_stats(adapter, precv_frame, *psta);
1064 ret = RTW_RX_HANDLED;
1065 goto exit;
1066 }
1067 } else {
1068 u8 *myhwaddr = myid(&adapter->eeprompriv);
1069 if (memcmp(pattrib->ra, myhwaddr, ETH_ALEN)) {
1070 ret = RTW_RX_HANDLED;
1071 goto exit;
1072 }
1073 DBG_871X("issue_deauth to sta =" MAC_FMT " for the reason(7)\n", MAC_ARG(pattrib->src));
1074 issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1075 ret = RTW_RX_HANDLED;
1076 goto exit;
1077 }
1078
1079 exit:
1080 return ret;
1081 }
1082
1083 sint validate_recv_ctrl_frame(struct adapter *padapter, union recv_frame *precv_frame);
validate_recv_ctrl_frame(struct adapter * padapter,union recv_frame * precv_frame)1084 sint validate_recv_ctrl_frame(struct adapter *padapter, union recv_frame *precv_frame)
1085 {
1086 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
1087 struct sta_priv *pstapriv = &padapter->stapriv;
1088 u8 *pframe = precv_frame->u.hdr.rx_data;
1089 struct sta_info *psta = NULL;
1090 /* uint len = precv_frame->u.hdr.len; */
1091
1092 /* DBG_871X("+validate_recv_ctrl_frame\n"); */
1093
1094 if (GetFrameType(pframe) != WIFI_CTRL_TYPE)
1095 return _FAIL;
1096
1097 /* receive the frames that ra(a1) is my address */
1098 if (memcmp(GetAddr1Ptr(pframe), myid(&padapter->eeprompriv), ETH_ALEN))
1099 return _FAIL;
1100
1101 psta = rtw_get_stainfo(pstapriv, GetAddr2Ptr(pframe));
1102 if (psta == NULL)
1103 return _FAIL;
1104
1105 /* for rx pkt statistics */
1106 psta->sta_stats.rx_ctrl_pkts++;
1107
1108 /* only handle ps-poll */
1109 if (GetFrameSubType(pframe) == WIFI_PSPOLL) {
1110 u16 aid;
1111 u8 wmmps_ac = 0;
1112
1113 aid = GetAid(pframe);
1114 if (psta->aid != aid)
1115 return _FAIL;
1116
1117 switch (pattrib->priority) {
1118 case 1:
1119 case 2:
1120 wmmps_ac = psta->uapsd_bk&BIT(0);
1121 break;
1122 case 4:
1123 case 5:
1124 wmmps_ac = psta->uapsd_vi&BIT(0);
1125 break;
1126 case 6:
1127 case 7:
1128 wmmps_ac = psta->uapsd_vo&BIT(0);
1129 break;
1130 case 0:
1131 case 3:
1132 default:
1133 wmmps_ac = psta->uapsd_be&BIT(0);
1134 break;
1135 }
1136
1137 if (wmmps_ac)
1138 return _FAIL;
1139
1140 if (psta->state & WIFI_STA_ALIVE_CHK_STATE) {
1141 DBG_871X("%s alive check-rx ps-poll\n", __func__);
1142 psta->expire_to = pstapriv->expire_to;
1143 psta->state ^= WIFI_STA_ALIVE_CHK_STATE;
1144 }
1145
1146 if ((psta->state&WIFI_SLEEP_STATE) && (pstapriv->sta_dz_bitmap&BIT(psta->aid))) {
1147 struct list_head *xmitframe_plist, *xmitframe_phead;
1148 struct xmit_frame *pxmitframe = NULL;
1149 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
1150
1151 /* spin_lock_bh(&psta->sleep_q.lock); */
1152 spin_lock_bh(&pxmitpriv->lock);
1153
1154 xmitframe_phead = get_list_head(&psta->sleep_q);
1155 xmitframe_plist = get_next(xmitframe_phead);
1156
1157 if (xmitframe_phead != xmitframe_plist) {
1158 pxmitframe = LIST_CONTAINOR(xmitframe_plist, struct xmit_frame, list);
1159
1160 xmitframe_plist = get_next(xmitframe_plist);
1161
1162 list_del_init(&pxmitframe->list);
1163
1164 psta->sleepq_len--;
1165
1166 if (psta->sleepq_len > 0)
1167 pxmitframe->attrib.mdata = 1;
1168 else
1169 pxmitframe->attrib.mdata = 0;
1170
1171 pxmitframe->attrib.triggered = 1;
1172
1173 /* DBG_871X("handling ps-poll, q_len =%d, tim =%x\n", psta->sleepq_len, pstapriv->tim_bitmap); */
1174
1175 rtw_hal_xmitframe_enqueue(padapter, pxmitframe);
1176
1177 if (psta->sleepq_len == 0) {
1178 pstapriv->tim_bitmap &= ~BIT(psta->aid);
1179
1180 /* DBG_871X("after handling ps-poll, tim =%x\n", pstapriv->tim_bitmap); */
1181
1182 /* upate BCN for TIM IE */
1183 /* update_BCNTIM(padapter); */
1184 update_beacon(padapter, _TIM_IE_, NULL, true);
1185 }
1186
1187 /* spin_unlock_bh(&psta->sleep_q.lock); */
1188 spin_unlock_bh(&pxmitpriv->lock);
1189
1190 } else{
1191 /* spin_unlock_bh(&psta->sleep_q.lock); */
1192 spin_unlock_bh(&pxmitpriv->lock);
1193
1194 /* DBG_871X("no buffered packets to xmit\n"); */
1195 if (pstapriv->tim_bitmap&BIT(psta->aid)) {
1196 if (psta->sleepq_len == 0) {
1197 DBG_871X("no buffered packets to xmit\n");
1198
1199 /* issue nulldata with More data bit = 0 to indicate we have no buffered packets */
1200 issue_nulldata_in_interrupt(padapter, psta->hwaddr);
1201 } else{
1202 DBG_871X("error!psta->sleepq_len =%d\n", psta->sleepq_len);
1203 psta->sleepq_len = 0;
1204 }
1205
1206 pstapriv->tim_bitmap &= ~BIT(psta->aid);
1207
1208 /* upate BCN for TIM IE */
1209 /* update_BCNTIM(padapter); */
1210 update_beacon(padapter, _TIM_IE_, NULL, true);
1211 }
1212 }
1213 }
1214 }
1215
1216 return _FAIL;
1217
1218 }
1219
1220 union recv_frame *recvframe_chk_defrag(struct adapter *padapter, union recv_frame *precv_frame);
1221 sint validate_recv_mgnt_frame(struct adapter *padapter, union recv_frame *precv_frame);
validate_recv_mgnt_frame(struct adapter * padapter,union recv_frame * precv_frame)1222 sint validate_recv_mgnt_frame(struct adapter *padapter, union recv_frame *precv_frame)
1223 {
1224 /* struct mlme_priv *pmlmepriv = &adapter->mlmepriv; */
1225
1226 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("+validate_recv_mgnt_frame\n"));
1227
1228 precv_frame = recvframe_chk_defrag(padapter, precv_frame);
1229 if (precv_frame == NULL) {
1230 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("%s: fragment packet\n", __func__));
1231 return _SUCCESS;
1232 }
1233
1234 {
1235 /* for rx pkt statistics */
1236 struct sta_info *psta = rtw_get_stainfo(&padapter->stapriv, GetAddr2Ptr(precv_frame->u.hdr.rx_data));
1237 if (psta) {
1238 psta->sta_stats.rx_mgnt_pkts++;
1239 if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_BEACON)
1240 psta->sta_stats.rx_beacon_pkts++;
1241 else if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_PROBEREQ)
1242 psta->sta_stats.rx_probereq_pkts++;
1243 else if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_PROBERSP) {
1244 if (!memcmp(padapter->eeprompriv.mac_addr, GetAddr1Ptr(precv_frame->u.hdr.rx_data), ETH_ALEN))
1245 psta->sta_stats.rx_probersp_pkts++;
1246 else if (is_broadcast_mac_addr(GetAddr1Ptr(precv_frame->u.hdr.rx_data))
1247 || is_multicast_mac_addr(GetAddr1Ptr(precv_frame->u.hdr.rx_data)))
1248 psta->sta_stats.rx_probersp_bm_pkts++;
1249 else
1250 psta->sta_stats.rx_probersp_uo_pkts++;
1251 }
1252 }
1253 }
1254
1255 mgt_dispatcher(padapter, precv_frame);
1256
1257 return _SUCCESS;
1258
1259 }
1260
1261 sint validate_recv_data_frame(struct adapter *adapter, union recv_frame *precv_frame);
validate_recv_data_frame(struct adapter * adapter,union recv_frame * precv_frame)1262 sint validate_recv_data_frame(struct adapter *adapter, union recv_frame *precv_frame)
1263 {
1264 u8 bretry;
1265 u8 *psa, *pda, *pbssid;
1266 struct sta_info *psta = NULL;
1267 u8 *ptr = precv_frame->u.hdr.rx_data;
1268 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
1269 struct security_priv *psecuritypriv = &adapter->securitypriv;
1270 sint ret = _SUCCESS;
1271
1272 bretry = GetRetry(ptr);
1273 pda = get_da(ptr);
1274 psa = get_sa(ptr);
1275 pbssid = get_hdr_bssid(ptr);
1276
1277 if (pbssid == NULL) {
1278 #ifdef DBG_RX_DROP_FRAME
1279 DBG_871X("DBG_RX_DROP_FRAME %s pbssid == NULL\n", __func__);
1280 #endif
1281 ret = _FAIL;
1282 goto exit;
1283 }
1284
1285 memcpy(pattrib->dst, pda, ETH_ALEN);
1286 memcpy(pattrib->src, psa, ETH_ALEN);
1287
1288 memcpy(pattrib->bssid, pbssid, ETH_ALEN);
1289
1290 switch (pattrib->to_fr_ds) {
1291 case 0:
1292 memcpy(pattrib->ra, pda, ETH_ALEN);
1293 memcpy(pattrib->ta, psa, ETH_ALEN);
1294 ret = sta2sta_data_frame(adapter, precv_frame, &psta);
1295 break;
1296
1297 case 1:
1298 memcpy(pattrib->ra, pda, ETH_ALEN);
1299 memcpy(pattrib->ta, pbssid, ETH_ALEN);
1300 ret = ap2sta_data_frame(adapter, precv_frame, &psta);
1301 break;
1302
1303 case 2:
1304 memcpy(pattrib->ra, pbssid, ETH_ALEN);
1305 memcpy(pattrib->ta, psa, ETH_ALEN);
1306 ret = sta2ap_data_frame(adapter, precv_frame, &psta);
1307 break;
1308
1309 case 3:
1310 memcpy(pattrib->ra, GetAddr1Ptr(ptr), ETH_ALEN);
1311 memcpy(pattrib->ta, GetAddr2Ptr(ptr), ETH_ALEN);
1312 ret = _FAIL;
1313 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" case 3\n"));
1314 break;
1315
1316 default:
1317 ret = _FAIL;
1318 break;
1319
1320 }
1321
1322 if (ret == _FAIL) {
1323 #ifdef DBG_RX_DROP_FRAME
1324 DBG_871X("DBG_RX_DROP_FRAME %s case:%d, res:%d\n", __func__, pattrib->to_fr_ds, ret);
1325 #endif
1326 goto exit;
1327 } else if (ret == RTW_RX_HANDLED) {
1328 goto exit;
1329 }
1330
1331
1332 if (psta == NULL) {
1333 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" after to_fr_ds_chk; psta == NULL\n"));
1334 #ifdef DBG_RX_DROP_FRAME
1335 DBG_871X("DBG_RX_DROP_FRAME %s psta == NULL\n", __func__);
1336 #endif
1337 ret = _FAIL;
1338 goto exit;
1339 }
1340
1341 /* psta->rssi = prxcmd->rssi; */
1342 /* psta->signal_quality = prxcmd->sq; */
1343 precv_frame->u.hdr.psta = psta;
1344
1345
1346 pattrib->amsdu = 0;
1347 pattrib->ack_policy = 0;
1348 /* parsing QC field */
1349 if (pattrib->qos == 1) {
1350 pattrib->priority = GetPriority((ptr + 24));
1351 pattrib->ack_policy = GetAckpolicy((ptr + 24));
1352 pattrib->amsdu = GetAMsdu((ptr + 24));
1353 pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 32 : 26;
1354
1355 if (pattrib->priority != 0 && pattrib->priority != 3)
1356 adapter->recvpriv.bIsAnyNonBEPkts = true;
1357
1358 } else{
1359 pattrib->priority = 0;
1360 pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 30 : 24;
1361 }
1362
1363
1364 if (pattrib->order)/* HT-CTRL 11n */
1365 pattrib->hdrlen += 4;
1366
1367 precv_frame->u.hdr.preorder_ctrl = &psta->recvreorder_ctrl[pattrib->priority];
1368
1369 /* decache, drop duplicate recv packets */
1370 if (recv_decache(precv_frame, bretry, &psta->sta_recvpriv.rxcache) == _FAIL) {
1371 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("decache : drop pkt\n"));
1372 #ifdef DBG_RX_DROP_FRAME
1373 DBG_871X("DBG_RX_DROP_FRAME %s recv_decache return _FAIL\n", __func__);
1374 #endif
1375 ret = _FAIL;
1376 goto exit;
1377 }
1378
1379 if (pattrib->privacy) {
1380
1381 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("validate_recv_data_frame:pattrib->privacy =%x\n", pattrib->privacy));
1382 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)));
1383
1384 GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, IS_MCAST(pattrib->ra));
1385
1386 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n pattrib->encrypt =%d\n", pattrib->encrypt));
1387
1388 SET_ICE_IV_LEN(pattrib->iv_len, pattrib->icv_len, pattrib->encrypt);
1389 } else{
1390 pattrib->encrypt = 0;
1391 pattrib->iv_len = pattrib->icv_len = 0;
1392 }
1393
1394 exit:
1395 return ret;
1396 }
1397
validate_80211w_mgmt(struct adapter * adapter,union recv_frame * precv_frame)1398 static sint validate_80211w_mgmt(struct adapter *adapter, union recv_frame *precv_frame)
1399 {
1400 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
1401 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
1402 u8 *ptr = precv_frame->u.hdr.rx_data;
1403 u8 type;
1404 u8 subtype;
1405
1406 type = GetFrameType(ptr);
1407 subtype = GetFrameSubType(ptr); /* bit(7)~bit(2) */
1408
1409 /* only support station mode */
1410 if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) && check_fwstate(pmlmepriv, _FW_LINKED)
1411 && adapter->securitypriv.binstallBIPkey == true) {
1412 /* unicast management frame decrypt */
1413 if (pattrib->privacy && !(IS_MCAST(GetAddr1Ptr(ptr))) &&
1414 (subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC || subtype == WIFI_ACTION)) {
1415 u8 *ppp, *mgmt_DATA;
1416 u32 data_len = 0;
1417 ppp = GetAddr2Ptr(ptr);
1418
1419 pattrib->bdecrypted = 0;
1420 pattrib->encrypt = _AES_;
1421 pattrib->hdrlen = sizeof(struct ieee80211_hdr_3addr);
1422 /* set iv and icv length */
1423 SET_ICE_IV_LEN(pattrib->iv_len, pattrib->icv_len, pattrib->encrypt);
1424 memcpy(pattrib->ra, GetAddr1Ptr(ptr), ETH_ALEN);
1425 memcpy(pattrib->ta, GetAddr2Ptr(ptr), ETH_ALEN);
1426 /* actual management data frame body */
1427 data_len = pattrib->pkt_len - pattrib->hdrlen - pattrib->iv_len - pattrib->icv_len;
1428 mgmt_DATA = rtw_zmalloc(data_len);
1429 if (mgmt_DATA == NULL) {
1430 DBG_871X("%s mgmt allocate fail !!!!!!!!!\n", __func__);
1431 goto validate_80211w_fail;
1432 }
1433 precv_frame = decryptor(adapter, precv_frame);
1434 /* save actual management data frame body */
1435 memcpy(mgmt_DATA, ptr+pattrib->hdrlen+pattrib->iv_len, data_len);
1436 /* overwrite the iv field */
1437 memcpy(ptr+pattrib->hdrlen, mgmt_DATA, data_len);
1438 /* remove the iv and icv length */
1439 pattrib->pkt_len = pattrib->pkt_len - pattrib->iv_len - pattrib->icv_len;
1440 kfree(mgmt_DATA);
1441 if (!precv_frame) {
1442 DBG_871X("%s mgmt descrypt fail !!!!!!!!!\n", __func__);
1443 goto validate_80211w_fail;
1444 }
1445 } else if (IS_MCAST(GetAddr1Ptr(ptr)) &&
1446 (subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC)) {
1447 sint BIP_ret = _SUCCESS;
1448 /* verify BIP MME IE of broadcast/multicast de-auth/disassoc packet */
1449 BIP_ret = rtw_BIP_verify(adapter, (u8 *)precv_frame);
1450 if (BIP_ret == _FAIL) {
1451 /* DBG_871X("802.11w BIP verify fail\n"); */
1452 goto validate_80211w_fail;
1453 } else if (BIP_ret == RTW_RX_HANDLED) {
1454 /* DBG_871X("802.11w recv none protected packet\n"); */
1455 /* issue sa query request */
1456 issue_action_SA_Query(adapter, NULL, 0, 0);
1457 goto validate_80211w_fail;
1458 }
1459 } else { /* 802.11w protect */
1460 if (subtype == WIFI_ACTION) {
1461 /* according 802.11-2012 standard, these five types are not robust types */
1462 if (ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_PUBLIC &&
1463 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_HT &&
1464 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_UNPROTECTED_WNM &&
1465 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_SELF_PROTECTED &&
1466 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_P2P) {
1467 DBG_871X("action frame category =%d should robust\n", ptr[WLAN_HDR_A3_LEN]);
1468 goto validate_80211w_fail;
1469 }
1470 } else if (subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC) {
1471 DBG_871X("802.11w recv none protected packet\n");
1472 /* issue sa query request */
1473 issue_action_SA_Query(adapter, NULL, 0, 0);
1474 goto validate_80211w_fail;
1475 }
1476 }
1477 }
1478 return _SUCCESS;
1479
1480 validate_80211w_fail:
1481 return _FAIL;
1482
1483 }
1484
dump_rx_packet(u8 * ptr)1485 static inline void dump_rx_packet(u8 *ptr)
1486 {
1487 int i;
1488
1489 DBG_871X("#############################\n");
1490 for (i = 0; i < 64; i = i+8)
1491 DBG_871X("%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:\n", *(ptr+i),
1492 *(ptr+i+1), *(ptr+i+2), *(ptr+i+3), *(ptr+i+4), *(ptr+i+5), *(ptr+i+6), *(ptr+i+7));
1493 DBG_871X("#############################\n");
1494 }
1495
1496 sint validate_recv_frame(struct adapter *adapter, union recv_frame *precv_frame);
validate_recv_frame(struct adapter * adapter,union recv_frame * precv_frame)1497 sint validate_recv_frame(struct adapter *adapter, union recv_frame *precv_frame)
1498 {
1499 /* shall check frame subtype, to / from ds, da, bssid */
1500
1501 /* then call check if rx seq/frag. duplicated. */
1502
1503 u8 type;
1504 u8 subtype;
1505 sint retval = _SUCCESS;
1506 u8 bDumpRxPkt;
1507
1508 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
1509
1510 u8 *ptr = precv_frame->u.hdr.rx_data;
1511 u8 ver = (unsigned char) (*ptr)&0x3;
1512
1513 /* add version chk */
1514 if (ver != 0) {
1515 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_data_frame fail! (ver!= 0)\n"));
1516 retval = _FAIL;
1517 DBG_COUNTER(adapter->rx_logs.core_rx_pre_ver_err);
1518 goto exit;
1519 }
1520
1521 type = GetFrameType(ptr);
1522 subtype = GetFrameSubType(ptr); /* bit(7)~bit(2) */
1523
1524 pattrib->to_fr_ds = get_tofr_ds(ptr);
1525
1526 pattrib->frag_num = GetFragNum(ptr);
1527 pattrib->seq_num = GetSequence(ptr);
1528
1529 pattrib->pw_save = GetPwrMgt(ptr);
1530 pattrib->mfrag = GetMFrag(ptr);
1531 pattrib->mdata = GetMData(ptr);
1532 pattrib->privacy = GetPrivacy(ptr);
1533 pattrib->order = GetOrder(ptr);
1534 rtw_hal_get_def_var(adapter, HAL_DEF_DBG_DUMP_RXPKT, &(bDumpRxPkt));
1535 if (bDumpRxPkt == 1) /* dump all rx packets */
1536 dump_rx_packet(ptr);
1537 else if ((bDumpRxPkt == 2) && (type == WIFI_MGT_TYPE))
1538 dump_rx_packet(ptr);
1539 else if ((bDumpRxPkt == 3) && (type == WIFI_DATA_TYPE))
1540 dump_rx_packet(ptr);
1541
1542 switch (type) {
1543 case WIFI_MGT_TYPE: /* mgnt */
1544 DBG_COUNTER(adapter->rx_logs.core_rx_pre_mgmt);
1545 if (validate_80211w_mgmt(adapter, precv_frame) == _FAIL) {
1546 retval = _FAIL;
1547 DBG_COUNTER(padapter->rx_logs.core_rx_pre_mgmt_err_80211w);
1548 break;
1549 }
1550
1551 retval = validate_recv_mgnt_frame(adapter, precv_frame);
1552 if (retval == _FAIL) {
1553 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_mgnt_frame fail\n"));
1554 DBG_COUNTER(adapter->rx_logs.core_rx_pre_mgmt_err);
1555 }
1556 retval = _FAIL; /* only data frame return _SUCCESS */
1557 break;
1558 case WIFI_CTRL_TYPE: /* ctrl */
1559 DBG_COUNTER(adapter->rx_logs.core_rx_pre_ctrl);
1560 retval = validate_recv_ctrl_frame(adapter, precv_frame);
1561 if (retval == _FAIL) {
1562 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_ctrl_frame fail\n"));
1563 DBG_COUNTER(adapter->rx_logs.core_rx_pre_ctrl_err);
1564 }
1565 retval = _FAIL; /* only data frame return _SUCCESS */
1566 break;
1567 case WIFI_DATA_TYPE: /* data */
1568 DBG_COUNTER(adapter->rx_logs.core_rx_pre_data);
1569
1570 pattrib->qos = (subtype & BIT(7)) ? 1:0;
1571 retval = validate_recv_data_frame(adapter, precv_frame);
1572 if (retval == _FAIL) {
1573 struct recv_priv *precvpriv = &adapter->recvpriv;
1574 /* RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_data_frame fail\n")); */
1575 precvpriv->rx_drop++;
1576 DBG_COUNTER(adapter->rx_logs.core_rx_pre_data_err);
1577 } else if (retval == _SUCCESS) {
1578 #ifdef DBG_RX_DUMP_EAP
1579 u8 bDumpRxPkt;
1580 u16 eth_type;
1581
1582 /* dump eapol */
1583 rtw_hal_get_def_var(adapter, HAL_DEF_DBG_DUMP_RXPKT, &(bDumpRxPkt));
1584 /* get ether_type */
1585 memcpy(ð_type, ptr + pattrib->hdrlen + pattrib->iv_len + LLC_HEADER_SIZE, 2);
1586 eth_type = ntohs((unsigned short) eth_type);
1587 if ((bDumpRxPkt == 4) && (eth_type == 0x888e))
1588 dump_rx_packet(ptr);
1589 #endif
1590 } else
1591 DBG_COUNTER(adapter->rx_logs.core_rx_pre_data_handled);
1592 break;
1593 default:
1594 DBG_COUNTER(adapter->rx_logs.core_rx_pre_unknown);
1595 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_data_frame fail! type = 0x%x\n", type));
1596 #ifdef DBG_RX_DROP_FRAME
1597 DBG_871X("DBG_RX_DROP_FRAME validate_recv_data_frame fail! type = 0x%x\n", type);
1598 #endif
1599 retval = _FAIL;
1600 break;
1601 }
1602
1603 exit:
1604 return retval;
1605 }
1606
1607
1608 /* remove the wlanhdr and add the eth_hdr */
1609 sint wlanhdr_to_ethhdr(union recv_frame *precvframe);
wlanhdr_to_ethhdr(union recv_frame * precvframe)1610 sint wlanhdr_to_ethhdr(union recv_frame *precvframe)
1611 {
1612 sint rmv_len;
1613 u16 eth_type, len;
1614 u8 bsnaphdr;
1615 u8 *psnap_type;
1616 struct ieee80211_snap_hdr *psnap;
1617 __be16 be_tmp;
1618 sint ret = _SUCCESS;
1619 struct adapter *adapter = precvframe->u.hdr.adapter;
1620 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
1621 u8 *ptr = get_recvframe_data(precvframe) ; /* point to frame_ctrl field */
1622 struct rx_pkt_attrib *pattrib = &precvframe->u.hdr.attrib;
1623
1624 if (pattrib->encrypt) {
1625 recvframe_pull_tail(precvframe, pattrib->icv_len);
1626 }
1627
1628 psnap = (struct ieee80211_snap_hdr *)(ptr+pattrib->hdrlen + pattrib->iv_len);
1629 psnap_type = ptr+pattrib->hdrlen + pattrib->iv_len+SNAP_SIZE;
1630 /* convert hdr + possible LLC headers into Ethernet header */
1631 /* eth_type = (psnap_type[0] << 8) | psnap_type[1]; */
1632 if ((!memcmp(psnap, rtw_rfc1042_header, SNAP_SIZE) &&
1633 (memcmp(psnap_type, SNAP_ETH_TYPE_IPX, 2)) &&
1634 (memcmp(psnap_type, SNAP_ETH_TYPE_APPLETALK_AARP, 2))) ||
1635 /* eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) || */
1636 !memcmp(psnap, rtw_bridge_tunnel_header, SNAP_SIZE)) {
1637 /* remove RFC1042 or Bridge-Tunnel encapsulation and replace EtherType */
1638 bsnaphdr = true;
1639 } else
1640 /* Leave Ethernet header part of hdr and full payload */
1641 bsnaphdr = false;
1642
1643 rmv_len = pattrib->hdrlen + pattrib->iv_len + (bsnaphdr?SNAP_SIZE:0);
1644 len = precvframe->u.hdr.len - rmv_len;
1645
1646 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n ===pattrib->hdrlen: %x, pattrib->iv_len:%x ===\n\n", pattrib->hdrlen, pattrib->iv_len));
1647
1648 memcpy(&be_tmp, ptr+rmv_len, 2);
1649 eth_type = ntohs(be_tmp); /* pattrib->ether_type */
1650 pattrib->eth_type = eth_type;
1651
1652 #ifdef CONFIG_AUTO_AP_MODE
1653 if (0x8899 == pattrib->eth_type) {
1654 struct sta_info *psta = precvframe->u.hdr.psta;
1655
1656 DBG_871X("wlan rx: got eth_type = 0x%x\n", pattrib->eth_type);
1657
1658 if (psta && psta->isrc && psta->pid > 0) {
1659 u16 rx_pid;
1660
1661 rx_pid = *(u16 *)(ptr+rmv_len+2);
1662
1663 DBG_871X("wlan rx(pid = 0x%x): sta("MAC_FMT") pid = 0x%x\n",
1664 rx_pid, MAC_ARG(psta->hwaddr), psta->pid);
1665
1666 if (rx_pid == psta->pid) {
1667 int i;
1668 u16 len = *(u16 *)(ptr+rmv_len+4);
1669 /* u16 ctrl_type = *(u16*)(ptr+rmv_len+6); */
1670
1671 /* DBG_871X("RC: len = 0x%x, ctrl_type = 0x%x\n", len, ctrl_type); */
1672 DBG_871X("RC: len = 0x%x\n", len);
1673
1674 for (i = 0; i < len ; i++)
1675 DBG_871X("0x%x\n", *(ptr+rmv_len+6+i));
1676 /* DBG_871X("0x%x\n", *(ptr+rmv_len+8+i)); */
1677
1678 DBG_871X("RC-end\n");
1679 }
1680 }
1681 }
1682 #endif /* CONFIG_AUTO_AP_MODE */
1683
1684 if ((check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)) {
1685 ptr += rmv_len;
1686 *ptr = 0x87;
1687 *(ptr+1) = 0x12;
1688
1689 eth_type = 0x8712;
1690 /* append rx status for mp test packets */
1691 ptr = recvframe_pull(precvframe, (rmv_len-sizeof(struct ethhdr)+2)-24);
1692 memcpy(ptr, get_rxmem(precvframe), 24);
1693 ptr += 24;
1694 } else
1695 ptr = recvframe_pull(precvframe, (rmv_len-sizeof(struct ethhdr) + (bsnaphdr?2:0)));
1696
1697 memcpy(ptr, pattrib->dst, ETH_ALEN);
1698 memcpy(ptr+ETH_ALEN, pattrib->src, ETH_ALEN);
1699
1700 if (!bsnaphdr) {
1701 be_tmp = htons(len);
1702 memcpy(ptr+12, &be_tmp, 2);
1703 }
1704
1705 return ret;
1706 }
1707
1708 /* perform defrag */
recvframe_defrag(struct adapter * adapter,struct __queue * defrag_q)1709 static union recv_frame *recvframe_defrag(struct adapter *adapter,
1710 struct __queue *defrag_q)
1711 {
1712 struct list_head *plist, *phead;
1713 u8 *data, wlanhdr_offset;
1714 u8 curfragnum;
1715 struct recv_frame_hdr *pfhdr, *pnfhdr;
1716 union recv_frame *prframe, *pnextrframe;
1717 struct __queue *pfree_recv_queue;
1718
1719 curfragnum = 0;
1720 pfree_recv_queue = &adapter->recvpriv.free_recv_queue;
1721
1722 phead = get_list_head(defrag_q);
1723 plist = get_next(phead);
1724 prframe = (union recv_frame *)plist;
1725 pfhdr = &prframe->u.hdr;
1726 list_del_init(&(prframe->u.list));
1727
1728 if (curfragnum != pfhdr->attrib.frag_num) {
1729 /* the first fragment number must be 0 */
1730 /* free the whole queue */
1731 rtw_free_recvframe(prframe, pfree_recv_queue);
1732 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
1733
1734 return NULL;
1735 }
1736
1737 curfragnum++;
1738
1739 plist = get_list_head(defrag_q);
1740
1741 plist = get_next(plist);
1742
1743 data = get_recvframe_data(prframe);
1744
1745 while (phead != plist) {
1746 pnextrframe = (union recv_frame *)plist;
1747 pnfhdr = &pnextrframe->u.hdr;
1748
1749
1750 /* check the fragment sequence (2nd ~n fragment frame) */
1751
1752 if (curfragnum != pnfhdr->attrib.frag_num) {
1753 /* the fragment number must be increasing (after decache) */
1754 /* release the defrag_q & prframe */
1755 rtw_free_recvframe(prframe, pfree_recv_queue);
1756 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
1757 return NULL;
1758 }
1759
1760 curfragnum++;
1761
1762 /* copy the 2nd~n fragment frame's payload to the first fragment */
1763 /* get the 2nd~last fragment frame's payload */
1764
1765 wlanhdr_offset = pnfhdr->attrib.hdrlen + pnfhdr->attrib.iv_len;
1766
1767 recvframe_pull(pnextrframe, wlanhdr_offset);
1768
1769 /* append to first fragment frame's tail (if privacy frame, pull the ICV) */
1770 recvframe_pull_tail(prframe, pfhdr->attrib.icv_len);
1771
1772 /* memcpy */
1773 memcpy(pfhdr->rx_tail, pnfhdr->rx_data, pnfhdr->len);
1774
1775 recvframe_put(prframe, pnfhdr->len);
1776
1777 pfhdr->attrib.icv_len = pnfhdr->attrib.icv_len;
1778 plist = get_next(plist);
1779
1780 }
1781
1782 /* free the defrag_q queue and return the prframe */
1783 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
1784
1785 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("Performance defrag!!!!!\n"));
1786
1787 return prframe;
1788 }
1789
1790 /* check if need to defrag, if needed queue the frame to defrag_q */
recvframe_chk_defrag(struct adapter * padapter,union recv_frame * precv_frame)1791 union recv_frame *recvframe_chk_defrag(struct adapter *padapter, union recv_frame *precv_frame)
1792 {
1793 u8 ismfrag;
1794 u8 fragnum;
1795 u8 *psta_addr;
1796 struct recv_frame_hdr *pfhdr;
1797 struct sta_info *psta;
1798 struct sta_priv *pstapriv;
1799 struct list_head *phead;
1800 union recv_frame *prtnframe = NULL;
1801 struct __queue *pfree_recv_queue, *pdefrag_q;
1802
1803 pstapriv = &padapter->stapriv;
1804
1805 pfhdr = &precv_frame->u.hdr;
1806
1807 pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
1808
1809 /* need to define struct of wlan header frame ctrl */
1810 ismfrag = pfhdr->attrib.mfrag;
1811 fragnum = pfhdr->attrib.frag_num;
1812
1813 psta_addr = pfhdr->attrib.ta;
1814 psta = rtw_get_stainfo(pstapriv, psta_addr);
1815 if (psta == NULL) {
1816 u8 type = GetFrameType(pfhdr->rx_data);
1817 if (type != WIFI_DATA_TYPE) {
1818 psta = rtw_get_bcmc_stainfo(padapter);
1819 pdefrag_q = &psta->sta_recvpriv.defrag_q;
1820 } else
1821 pdefrag_q = NULL;
1822 } else
1823 pdefrag_q = &psta->sta_recvpriv.defrag_q;
1824
1825 if ((ismfrag == 0) && (fragnum == 0))
1826 prtnframe = precv_frame;/* isn't a fragment frame */
1827
1828 if (ismfrag == 1) {
1829 /* 0~(n-1) fragment frame */
1830 /* enqueue to defraf_g */
1831 if (pdefrag_q != NULL) {
1832 if (fragnum == 0)
1833 /* the first fragment */
1834 if (!list_empty(&pdefrag_q->queue))
1835 /* free current defrag_q */
1836 rtw_free_recvframe_queue(pdefrag_q, pfree_recv_queue);
1837
1838
1839 /* Then enqueue the 0~(n-1) fragment into the defrag_q */
1840
1841 /* spin_lock(&pdefrag_q->lock); */
1842 phead = get_list_head(pdefrag_q);
1843 list_add_tail(&pfhdr->list, phead);
1844 /* spin_unlock(&pdefrag_q->lock); */
1845
1846 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("Enqueuq: ismfrag = %d, fragnum = %d\n", ismfrag, fragnum));
1847
1848 prtnframe = NULL;
1849
1850 } else{
1851 /* can't find this ta's defrag_queue, so free this recv_frame */
1852 rtw_free_recvframe(precv_frame, pfree_recv_queue);
1853 prtnframe = NULL;
1854 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("Free because pdefrag_q == NULL: ismfrag = %d, fragnum = %d\n", ismfrag, fragnum));
1855 }
1856
1857 }
1858
1859 if ((ismfrag == 0) && (fragnum != 0)) {
1860 /* the last fragment frame */
1861 /* enqueue the last fragment */
1862 if (pdefrag_q != NULL) {
1863 /* spin_lock(&pdefrag_q->lock); */
1864 phead = get_list_head(pdefrag_q);
1865 list_add_tail(&pfhdr->list, phead);
1866 /* spin_unlock(&pdefrag_q->lock); */
1867
1868 /* call recvframe_defrag to defrag */
1869 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("defrag: ismfrag = %d, fragnum = %d\n", ismfrag, fragnum));
1870 precv_frame = recvframe_defrag(padapter, pdefrag_q);
1871 prtnframe = precv_frame;
1872
1873 } else{
1874 /* can't find this ta's defrag_queue, so free this recv_frame */
1875 rtw_free_recvframe(precv_frame, pfree_recv_queue);
1876 prtnframe = NULL;
1877 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("Free because pdefrag_q == NULL: ismfrag = %d, fragnum = %d\n", ismfrag, fragnum));
1878 }
1879
1880 }
1881
1882
1883 if ((prtnframe != NULL) && (prtnframe->u.hdr.attrib.privacy)) {
1884 /* after defrag we must check tkip mic code */
1885 if (recvframe_chkmic(padapter, prtnframe) == _FAIL) {
1886 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvframe_chkmic(padapter, prtnframe) == _FAIL\n"));
1887 rtw_free_recvframe(prtnframe, pfree_recv_queue);
1888 prtnframe = NULL;
1889 }
1890 }
1891 return prtnframe;
1892 }
1893
amsdu_to_msdu(struct adapter * padapter,union recv_frame * prframe)1894 static int amsdu_to_msdu(struct adapter *padapter, union recv_frame *prframe)
1895 {
1896 int a_len, padding_len;
1897 u16 nSubframe_Length;
1898 u8 nr_subframes, i;
1899 u8 *pdata;
1900 _pkt *sub_pkt, *subframes[MAX_SUBFRAME_COUNT];
1901 struct recv_priv *precvpriv = &padapter->recvpriv;
1902 struct __queue *pfree_recv_queue = &(precvpriv->free_recv_queue);
1903 int ret = _SUCCESS;
1904
1905 nr_subframes = 0;
1906
1907 recvframe_pull(prframe, prframe->u.hdr.attrib.hdrlen);
1908
1909 if (prframe->u.hdr.attrib.iv_len > 0)
1910 recvframe_pull(prframe, prframe->u.hdr.attrib.iv_len);
1911
1912 a_len = prframe->u.hdr.len;
1913
1914 pdata = prframe->u.hdr.rx_data;
1915
1916 while (a_len > ETH_HLEN) {
1917
1918 /* Offset 12 denote 2 mac address */
1919 nSubframe_Length = RTW_GET_BE16(pdata + 12);
1920
1921 if (a_len < (ETHERNET_HEADER_SIZE + nSubframe_Length)) {
1922 DBG_871X("nRemain_Length is %d and nSubframe_Length is : %d\n", a_len, nSubframe_Length);
1923 break;
1924 }
1925
1926 sub_pkt = rtw_os_alloc_msdu_pkt(prframe, nSubframe_Length, pdata);
1927 if (sub_pkt == NULL) {
1928 DBG_871X("%s(): allocate sub packet fail !!!\n", __func__);
1929 break;
1930 }
1931
1932 /* move the data point to data content */
1933 pdata += ETH_HLEN;
1934 a_len -= ETH_HLEN;
1935
1936 subframes[nr_subframes++] = sub_pkt;
1937
1938 if (nr_subframes >= MAX_SUBFRAME_COUNT) {
1939 DBG_871X("ParseSubframe(): Too many Subframes! Packets dropped!\n");
1940 break;
1941 }
1942
1943 pdata += nSubframe_Length;
1944 a_len -= nSubframe_Length;
1945 if (a_len != 0) {
1946 padding_len = 4 - ((nSubframe_Length + ETH_HLEN) & (4-1));
1947 if (padding_len == 4) {
1948 padding_len = 0;
1949 }
1950
1951 if (a_len < padding_len) {
1952 DBG_871X("ParseSubframe(): a_len < padding_len !\n");
1953 break;
1954 }
1955 pdata += padding_len;
1956 a_len -= padding_len;
1957 }
1958 }
1959
1960 for (i = 0; i < nr_subframes; i++) {
1961 sub_pkt = subframes[i];
1962
1963 /* Indicat the packets to upper layer */
1964 if (sub_pkt) {
1965 rtw_os_recv_indicate_pkt(padapter, sub_pkt, &prframe->u.hdr.attrib);
1966 }
1967 }
1968
1969 prframe->u.hdr.len = 0;
1970 rtw_free_recvframe(prframe, pfree_recv_queue);/* free this recv_frame */
1971
1972 return ret;
1973 }
1974
1975 int check_indicate_seq(struct recv_reorder_ctrl *preorder_ctrl, u16 seq_num);
check_indicate_seq(struct recv_reorder_ctrl * preorder_ctrl,u16 seq_num)1976 int check_indicate_seq(struct recv_reorder_ctrl *preorder_ctrl, u16 seq_num)
1977 {
1978 struct adapter *padapter = preorder_ctrl->padapter;
1979 struct dvobj_priv *psdpriv = padapter->dvobj;
1980 struct debug_priv *pdbgpriv = &psdpriv->drv_dbg;
1981 u8 wsize = preorder_ctrl->wsize_b;
1982 u16 wend = (preorder_ctrl->indicate_seq + wsize - 1) & 0xFFF;/* 4096; */
1983
1984 /* Rx Reorder initialize condition. */
1985 if (preorder_ctrl->indicate_seq == 0xFFFF) {
1986 preorder_ctrl->indicate_seq = seq_num;
1987 #ifdef DBG_RX_SEQ
1988 DBG_871X("DBG_RX_SEQ %s:%d init IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
1989 preorder_ctrl->indicate_seq, seq_num);
1990 #endif
1991
1992 /* DbgPrint("check_indicate_seq, 1st->indicate_seq =%d\n", precvpriv->indicate_seq); */
1993 }
1994
1995 /* DbgPrint("enter->check_indicate_seq(): IndicateSeq: %d, NewSeq: %d\n", precvpriv->indicate_seq, seq_num); */
1996
1997 /* Drop out the packet which SeqNum is smaller than WinStart */
1998 if (SN_LESS(seq_num, preorder_ctrl->indicate_seq)) {
1999 /* RT_TRACE(COMP_RX_REORDER, DBG_LOUD, ("CheckRxTsIndicateSeq(): Packet Drop! IndicateSeq: %d, NewSeq: %d\n", pTS->RxIndicateSeq, NewSeqNum)); */
2000 /* DbgPrint("CheckRxTsIndicateSeq(): Packet Drop! IndicateSeq: %d, NewSeq: %d\n", precvpriv->indicate_seq, seq_num); */
2001
2002 #ifdef DBG_RX_DROP_FRAME
2003 DBG_871X("%s IndicateSeq: %d > NewSeq: %d\n", __func__,
2004 preorder_ctrl->indicate_seq, seq_num);
2005 #endif
2006
2007
2008 return false;
2009 }
2010
2011 /* */
2012 /* Sliding window manipulation. Conditions includes: */
2013 /* 1. Incoming SeqNum is equal to WinStart =>Window shift 1 */
2014 /* 2. Incoming SeqNum is larger than the WinEnd => Window shift N */
2015 /* */
2016 if (SN_EQUAL(seq_num, preorder_ctrl->indicate_seq)) {
2017 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF;
2018
2019 #ifdef DBG_RX_SEQ
2020 DBG_871X("DBG_RX_SEQ %s:%d SN_EQUAL IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
2021 preorder_ctrl->indicate_seq, seq_num);
2022 #endif
2023 } else if (SN_LESS(wend, seq_num)) {
2024 /* RT_TRACE(COMP_RX_REORDER, DBG_LOUD, ("CheckRxTsIndicateSeq(): Window Shift! IndicateSeq: %d, NewSeq: %d\n", pTS->RxIndicateSeq, NewSeqNum)); */
2025 /* DbgPrint("CheckRxTsIndicateSeq(): Window Shift! IndicateSeq: %d, NewSeq: %d\n", precvpriv->indicate_seq, seq_num); */
2026
2027 /* boundary situation, when seq_num cross 0xFFF */
2028 if (seq_num >= (wsize - 1))
2029 preorder_ctrl->indicate_seq = seq_num + 1 - wsize;
2030 else
2031 preorder_ctrl->indicate_seq = 0xFFF - (wsize - (seq_num + 1)) + 1;
2032 pdbgpriv->dbg_rx_ampdu_window_shift_cnt++;
2033 #ifdef DBG_RX_SEQ
2034 DBG_871X("DBG_RX_SEQ %s:%d SN_LESS(wend, seq_num) IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
2035 preorder_ctrl->indicate_seq, seq_num);
2036 #endif
2037 }
2038
2039 /* DbgPrint("exit->check_indicate_seq(): IndicateSeq: %d, NewSeq: %d\n", precvpriv->indicate_seq, seq_num); */
2040
2041 return true;
2042 }
2043
2044 int enqueue_reorder_recvframe(struct recv_reorder_ctrl *preorder_ctrl, union recv_frame *prframe);
enqueue_reorder_recvframe(struct recv_reorder_ctrl * preorder_ctrl,union recv_frame * prframe)2045 int enqueue_reorder_recvframe(struct recv_reorder_ctrl *preorder_ctrl, union recv_frame *prframe)
2046 {
2047 struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib;
2048 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
2049 struct list_head *phead, *plist;
2050 union recv_frame *pnextrframe;
2051 struct rx_pkt_attrib *pnextattrib;
2052
2053 /* DbgPrint("+enqueue_reorder_recvframe()\n"); */
2054
2055 /* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */
2056 /* spin_lock(&ppending_recvframe_queue->lock); */
2057
2058
2059 phead = get_list_head(ppending_recvframe_queue);
2060 plist = get_next(phead);
2061
2062 while (phead != plist) {
2063 pnextrframe = (union recv_frame *)plist;
2064 pnextattrib = &pnextrframe->u.hdr.attrib;
2065
2066 if (SN_LESS(pnextattrib->seq_num, pattrib->seq_num))
2067 plist = get_next(plist);
2068 else if (SN_EQUAL(pnextattrib->seq_num, pattrib->seq_num))
2069 /* Duplicate entry is found!! Do not insert current entry. */
2070 /* RT_TRACE(COMP_RX_REORDER, DBG_TRACE, ("InsertRxReorderList(): Duplicate packet is dropped!! IndicateSeq: %d, NewSeq: %d\n", pTS->RxIndicateSeq, SeqNum)); */
2071 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
2072 return false;
2073 else
2074 break;
2075
2076 /* DbgPrint("enqueue_reorder_recvframe():while\n"); */
2077
2078 }
2079
2080
2081 /* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */
2082 /* spin_lock(&ppending_recvframe_queue->lock); */
2083
2084 list_del_init(&(prframe->u.hdr.list));
2085
2086 list_add_tail(&(prframe->u.hdr.list), plist);
2087
2088 /* spin_unlock(&ppending_recvframe_queue->lock); */
2089 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
2090
2091
2092 /* RT_TRACE(COMP_RX_REORDER, DBG_TRACE, ("InsertRxReorderList(): Pkt insert into buffer!! IndicateSeq: %d, NewSeq: %d\n", pTS->RxIndicateSeq, SeqNum)); */
2093 return true;
2094
2095 }
2096
2097 void recv_indicatepkts_pkt_loss_cnt(struct debug_priv *pdbgpriv, u64 prev_seq, u64 current_seq);
recv_indicatepkts_pkt_loss_cnt(struct debug_priv * pdbgpriv,u64 prev_seq,u64 current_seq)2098 void recv_indicatepkts_pkt_loss_cnt(struct debug_priv *pdbgpriv, u64 prev_seq, u64 current_seq)
2099 {
2100 if (current_seq < prev_seq)
2101 pdbgpriv->dbg_rx_ampdu_loss_count += (4096 + current_seq - prev_seq);
2102 else
2103 pdbgpriv->dbg_rx_ampdu_loss_count += (current_seq - prev_seq);
2104
2105 }
2106 int recv_indicatepkts_in_order(struct adapter *padapter, struct recv_reorder_ctrl *preorder_ctrl, int bforced);
recv_indicatepkts_in_order(struct adapter * padapter,struct recv_reorder_ctrl * preorder_ctrl,int bforced)2107 int recv_indicatepkts_in_order(struct adapter *padapter, struct recv_reorder_ctrl *preorder_ctrl, int bforced)
2108 {
2109 struct list_head *phead, *plist;
2110 union recv_frame *prframe;
2111 struct rx_pkt_attrib *pattrib;
2112 /* u8 index = 0; */
2113 int bPktInBuf = false;
2114 struct recv_priv *precvpriv = &padapter->recvpriv;
2115 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
2116 struct dvobj_priv *psdpriv = padapter->dvobj;
2117 struct debug_priv *pdbgpriv = &psdpriv->drv_dbg;
2118
2119 DBG_COUNTER(padapter->rx_logs.core_rx_post_indicate_in_oder);
2120
2121 /* DbgPrint("+recv_indicatepkts_in_order\n"); */
2122
2123 /* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */
2124 /* spin_lock(&ppending_recvframe_queue->lock); */
2125
2126 phead = get_list_head(ppending_recvframe_queue);
2127 plist = get_next(phead);
2128
2129 /* Handling some condition for forced indicate case. */
2130 if (bforced == true) {
2131 pdbgpriv->dbg_rx_ampdu_forced_indicate_count++;
2132 if (list_empty(phead)) {
2133 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
2134 /* spin_unlock(&ppending_recvframe_queue->lock); */
2135 return true;
2136 }
2137
2138 prframe = (union recv_frame *)plist;
2139 pattrib = &prframe->u.hdr.attrib;
2140
2141 #ifdef DBG_RX_SEQ
2142 DBG_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
2143 preorder_ctrl->indicate_seq, pattrib->seq_num);
2144 #endif
2145 recv_indicatepkts_pkt_loss_cnt(pdbgpriv, preorder_ctrl->indicate_seq, pattrib->seq_num);
2146 preorder_ctrl->indicate_seq = pattrib->seq_num;
2147
2148 }
2149
2150 /* Prepare indication list and indication. */
2151 /* Check if there is any packet need indicate. */
2152 while (!list_empty(phead)) {
2153
2154 prframe = (union recv_frame *)plist;
2155 pattrib = &prframe->u.hdr.attrib;
2156
2157 if (!SN_LESS(preorder_ctrl->indicate_seq, pattrib->seq_num)) {
2158 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
2159 ("recv_indicatepkts_in_order: indicate =%d seq =%d amsdu =%d\n",
2160 preorder_ctrl->indicate_seq, pattrib->seq_num, pattrib->amsdu));
2161
2162 plist = get_next(plist);
2163 list_del_init(&(prframe->u.hdr.list));
2164
2165 if (SN_EQUAL(preorder_ctrl->indicate_seq, pattrib->seq_num)) {
2166 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF;
2167 #ifdef DBG_RX_SEQ
2168 DBG_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
2169 preorder_ctrl->indicate_seq, pattrib->seq_num);
2170 #endif
2171 }
2172
2173 /* Set this as a lock to make sure that only one thread is indicating packet. */
2174 /* pTS->RxIndicateState = RXTS_INDICATE_PROCESSING; */
2175
2176 /* Indicate packets */
2177 /* RT_ASSERT((index<=REORDER_WIN_SIZE), ("RxReorderIndicatePacket(): Rx Reorder buffer full!!\n")); */
2178
2179
2180 /* indicate this recv_frame */
2181 /* DbgPrint("recv_indicatepkts_in_order, indicate_seq =%d, seq_num =%d\n", precvpriv->indicate_seq, pattrib->seq_num); */
2182 if (!pattrib->amsdu) {
2183 /* DBG_871X("recv_indicatepkts_in_order, amsdu!= 1, indicate_seq =%d, seq_num =%d\n", preorder_ctrl->indicate_seq, pattrib->seq_num); */
2184
2185 if ((padapter->bDriverStopped == false) &&
2186 (padapter->bSurpriseRemoved == false))
2187 rtw_recv_indicatepkt(padapter, prframe);/* indicate this recv_frame */
2188
2189 } else if (pattrib->amsdu == 1) {
2190 if (amsdu_to_msdu(padapter, prframe) != _SUCCESS)
2191 rtw_free_recvframe(prframe, &precvpriv->free_recv_queue);
2192
2193 } else{
2194 /* error condition; */
2195 }
2196
2197
2198 /* Update local variables. */
2199 bPktInBuf = false;
2200
2201 } else{
2202 bPktInBuf = true;
2203 break;
2204 }
2205
2206 /* DbgPrint("recv_indicatepkts_in_order():while\n"); */
2207
2208 }
2209
2210 /* spin_unlock(&ppending_recvframe_queue->lock); */
2211 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
2212
2213 return bPktInBuf;
2214 }
2215
2216 int recv_indicatepkt_reorder(struct adapter *padapter, union recv_frame *prframe);
recv_indicatepkt_reorder(struct adapter * padapter,union recv_frame * prframe)2217 int recv_indicatepkt_reorder(struct adapter *padapter, union recv_frame *prframe)
2218 {
2219 int retval = _SUCCESS;
2220 struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib;
2221 struct recv_reorder_ctrl *preorder_ctrl = prframe->u.hdr.preorder_ctrl;
2222 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
2223 struct dvobj_priv *psdpriv = padapter->dvobj;
2224 struct debug_priv *pdbgpriv = &psdpriv->drv_dbg;
2225
2226 DBG_COUNTER(padapter->rx_logs.core_rx_post_indicate_reoder);
2227
2228 if (!pattrib->amsdu) {
2229 /* s1. */
2230 wlanhdr_to_ethhdr(prframe);
2231
2232 if (pattrib->qos != 1) {
2233 if ((padapter->bDriverStopped == false) &&
2234 (padapter->bSurpriseRemoved == false)) {
2235 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("@@@@ recv_indicatepkt_reorder -recv_func recv_indicatepkt\n"));
2236
2237 rtw_recv_indicatepkt(padapter, prframe);
2238 return _SUCCESS;
2239
2240 }
2241
2242 #ifdef DBG_RX_DROP_FRAME
2243 DBG_871X("DBG_RX_DROP_FRAME %s pattrib->qos != 1\n", __func__);
2244 #endif
2245
2246 return _FAIL;
2247
2248 }
2249
2250 if (preorder_ctrl->enable == false) {
2251 /* indicate this recv_frame */
2252 preorder_ctrl->indicate_seq = pattrib->seq_num;
2253 #ifdef DBG_RX_SEQ
2254 DBG_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
2255 preorder_ctrl->indicate_seq, pattrib->seq_num);
2256 #endif
2257
2258 rtw_recv_indicatepkt(padapter, prframe);
2259
2260 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096;
2261 #ifdef DBG_RX_SEQ
2262 DBG_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
2263 preorder_ctrl->indicate_seq, pattrib->seq_num);
2264 #endif
2265
2266 return _SUCCESS;
2267 }
2268 } else if (pattrib->amsdu == 1) { /* temp filter -> means didn't support A-MSDUs in a A-MPDU */
2269 if (preorder_ctrl->enable == false) {
2270 preorder_ctrl->indicate_seq = pattrib->seq_num;
2271 #ifdef DBG_RX_SEQ
2272 DBG_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
2273 preorder_ctrl->indicate_seq, pattrib->seq_num);
2274 #endif
2275
2276 retval = amsdu_to_msdu(padapter, prframe);
2277
2278 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096;
2279 #ifdef DBG_RX_SEQ
2280 DBG_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
2281 preorder_ctrl->indicate_seq, pattrib->seq_num);
2282 #endif
2283
2284 if (retval != _SUCCESS) {
2285 #ifdef DBG_RX_DROP_FRAME
2286 DBG_871X("DBG_RX_DROP_FRAME %s amsdu_to_msdu fail\n", __func__);
2287 #endif
2288 }
2289
2290 return retval;
2291 }
2292 }
2293
2294 spin_lock_bh(&ppending_recvframe_queue->lock);
2295
2296 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
2297 ("recv_indicatepkt_reorder: indicate =%d seq =%d\n",
2298 preorder_ctrl->indicate_seq, pattrib->seq_num));
2299
2300 /* s2. check if winstart_b(indicate_seq) needs to been updated */
2301 if (!check_indicate_seq(preorder_ctrl, pattrib->seq_num)) {
2302 pdbgpriv->dbg_rx_ampdu_drop_count++;
2303 #ifdef DBG_RX_DROP_FRAME
2304 DBG_871X("DBG_RX_DROP_FRAME %s check_indicate_seq fail\n", __func__);
2305 #endif
2306 goto _err_exit;
2307 }
2308
2309
2310 /* s3. Insert all packet into Reorder Queue to maintain its ordering. */
2311 if (!enqueue_reorder_recvframe(preorder_ctrl, prframe)) {
2312 /* DbgPrint("recv_indicatepkt_reorder, enqueue_reorder_recvframe fail!\n"); */
2313 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
2314 /* return _FAIL; */
2315 #ifdef DBG_RX_DROP_FRAME
2316 DBG_871X("DBG_RX_DROP_FRAME %s enqueue_reorder_recvframe fail\n", __func__);
2317 #endif
2318 goto _err_exit;
2319 }
2320
2321
2322 /* s4. */
2323 /* Indication process. */
2324 /* After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets */
2325 /* with the SeqNum smaller than latest WinStart and buffer other packets. */
2326 /* */
2327 /* For Rx Reorder condition: */
2328 /* 1. All packets with SeqNum smaller than WinStart => Indicate */
2329 /* 2. All packets with SeqNum larger than or equal to WinStart => Buffer it. */
2330 /* */
2331
2332 /* recv_indicatepkts_in_order(padapter, preorder_ctrl, true); */
2333 if (recv_indicatepkts_in_order(padapter, preorder_ctrl, false) == true) {
2334 _set_timer(&preorder_ctrl->reordering_ctrl_timer, REORDER_WAIT_TIME);
2335 spin_unlock_bh(&ppending_recvframe_queue->lock);
2336 } else{
2337 spin_unlock_bh(&ppending_recvframe_queue->lock);
2338 del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
2339 }
2340
2341 return _SUCCESS;
2342
2343 _err_exit:
2344 spin_unlock_bh(&ppending_recvframe_queue->lock);
2345
2346 return _FAIL;
2347 }
2348
2349
rtw_reordering_ctrl_timeout_handler(struct timer_list * t)2350 void rtw_reordering_ctrl_timeout_handler(struct timer_list *t)
2351 {
2352 struct recv_reorder_ctrl *preorder_ctrl =
2353 from_timer(preorder_ctrl, t, reordering_ctrl_timer);
2354 struct adapter *padapter = preorder_ctrl->padapter;
2355 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
2356
2357
2358 if (padapter->bDriverStopped || padapter->bSurpriseRemoved)
2359 return;
2360
2361 /* DBG_871X("+rtw_reordering_ctrl_timeout_handler() =>\n"); */
2362
2363 spin_lock_bh(&ppending_recvframe_queue->lock);
2364
2365 if (recv_indicatepkts_in_order(padapter, preorder_ctrl, true) == true)
2366 _set_timer(&preorder_ctrl->reordering_ctrl_timer, REORDER_WAIT_TIME);
2367
2368 spin_unlock_bh(&ppending_recvframe_queue->lock);
2369
2370 }
2371
2372 int process_recv_indicatepkts(struct adapter *padapter, union recv_frame *prframe);
process_recv_indicatepkts(struct adapter * padapter,union recv_frame * prframe)2373 int process_recv_indicatepkts(struct adapter *padapter, union recv_frame *prframe)
2374 {
2375 int retval = _SUCCESS;
2376 /* struct recv_priv *precvpriv = &padapter->recvpriv; */
2377 /* struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib; */
2378 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
2379 struct ht_priv *phtpriv = &pmlmepriv->htpriv;
2380
2381 DBG_COUNTER(padapter->rx_logs.core_rx_post_indicate);
2382
2383 if (phtpriv->ht_option == true) { /* B/G/N Mode */
2384 /* prframe->u.hdr.preorder_ctrl = &precvpriv->recvreorder_ctrl[pattrib->priority]; */
2385
2386 if (recv_indicatepkt_reorder(padapter, prframe) != _SUCCESS) { /* including perform A-MPDU Rx Ordering Buffer Control */
2387 #ifdef DBG_RX_DROP_FRAME
2388 DBG_871X("DBG_RX_DROP_FRAME %s recv_indicatepkt_reorder error!\n", __func__);
2389 #endif
2390
2391 if ((padapter->bDriverStopped == false) &&
2392 (padapter->bSurpriseRemoved == false)) {
2393 retval = _FAIL;
2394 return retval;
2395 }
2396 }
2397 } else { /* B/G mode */
2398 retval = wlanhdr_to_ethhdr(prframe);
2399 if (retval != _SUCCESS) {
2400 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("wlanhdr_to_ethhdr: drop pkt\n"));
2401 #ifdef DBG_RX_DROP_FRAME
2402 DBG_871X("DBG_RX_DROP_FRAME %s wlanhdr_to_ethhdr error!\n", __func__);
2403 #endif
2404 return retval;
2405 }
2406
2407 if ((padapter->bDriverStopped == false) && (padapter->bSurpriseRemoved == false)) {
2408 /* indicate this recv_frame */
2409 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("@@@@ process_recv_indicatepkts- recv_func recv_indicatepkt\n"));
2410 rtw_recv_indicatepkt(padapter, prframe);
2411
2412
2413 } else{
2414 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("@@@@ process_recv_indicatepkts- recv_func free_indicatepkt\n"));
2415
2416 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("recv_func:bDriverStopped(%d) OR bSurpriseRemoved(%d)", padapter->bDriverStopped, padapter->bSurpriseRemoved));
2417 retval = _FAIL;
2418 return retval;
2419 }
2420
2421 }
2422
2423 return retval;
2424
2425 }
2426
recv_func_prehandle(struct adapter * padapter,union recv_frame * rframe)2427 static int recv_func_prehandle(struct adapter *padapter, union recv_frame *rframe)
2428 {
2429 int ret = _SUCCESS;
2430 struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
2431
2432 DBG_COUNTER(padapter->rx_logs.core_rx_pre);
2433
2434 /* check the frame crtl field and decache */
2435 ret = validate_recv_frame(padapter, rframe);
2436 if (ret != _SUCCESS) {
2437 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("recv_func: validate_recv_frame fail! drop pkt\n"));
2438 rtw_free_recvframe(rframe, pfree_recv_queue);/* free this recv_frame */
2439 goto exit;
2440 }
2441
2442 exit:
2443 return ret;
2444 }
2445
recv_func_posthandle(struct adapter * padapter,union recv_frame * prframe)2446 static int recv_func_posthandle(struct adapter *padapter, union recv_frame *prframe)
2447 {
2448 int ret = _SUCCESS;
2449 union recv_frame *orig_prframe = prframe;
2450 struct recv_priv *precvpriv = &padapter->recvpriv;
2451 struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
2452
2453 DBG_COUNTER(padapter->rx_logs.core_rx_post);
2454
2455 prframe = decryptor(padapter, prframe);
2456 if (prframe == NULL) {
2457 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("decryptor: drop pkt\n"));
2458 #ifdef DBG_RX_DROP_FRAME
2459 DBG_871X("DBG_RX_DROP_FRAME %s decryptor: drop pkt\n", __func__);
2460 #endif
2461 ret = _FAIL;
2462 DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt_err);
2463 goto _recv_data_drop;
2464 }
2465
2466 prframe = recvframe_chk_defrag(padapter, prframe);
2467 if (prframe == NULL) {
2468 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvframe_chk_defrag: drop pkt\n"));
2469 #ifdef DBG_RX_DROP_FRAME
2470 DBG_871X("DBG_RX_DROP_FRAME %s recvframe_chk_defrag: drop pkt\n", __func__);
2471 #endif
2472 DBG_COUNTER(padapter->rx_logs.core_rx_post_defrag_err);
2473 goto _recv_data_drop;
2474 }
2475
2476 prframe = portctrl(padapter, prframe);
2477 if (prframe == NULL) {
2478 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("portctrl: drop pkt\n"));
2479 #ifdef DBG_RX_DROP_FRAME
2480 DBG_871X("DBG_RX_DROP_FRAME %s portctrl: drop pkt\n", __func__);
2481 #endif
2482 ret = _FAIL;
2483 DBG_COUNTER(padapter->rx_logs.core_rx_post_portctrl_err);
2484 goto _recv_data_drop;
2485 }
2486
2487 count_rx_stats(padapter, prframe, NULL);
2488
2489 ret = process_recv_indicatepkts(padapter, prframe);
2490 if (ret != _SUCCESS) {
2491 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recv_func: process_recv_indicatepkts fail!\n"));
2492 #ifdef DBG_RX_DROP_FRAME
2493 DBG_871X("DBG_RX_DROP_FRAME %s process_recv_indicatepkts fail!\n", __func__);
2494 #endif
2495 rtw_free_recvframe(orig_prframe, pfree_recv_queue);/* free this recv_frame */
2496 DBG_COUNTER(padapter->rx_logs.core_rx_post_indicate_err);
2497 goto _recv_data_drop;
2498 }
2499
2500 _recv_data_drop:
2501 precvpriv->rx_drop++;
2502 return ret;
2503 }
2504
2505
2506 int recv_func(struct adapter *padapter, union recv_frame *rframe);
recv_func(struct adapter * padapter,union recv_frame * rframe)2507 int recv_func(struct adapter *padapter, union recv_frame *rframe)
2508 {
2509 int ret;
2510 struct rx_pkt_attrib *prxattrib = &rframe->u.hdr.attrib;
2511 struct recv_priv *recvpriv = &padapter->recvpriv;
2512 struct security_priv *psecuritypriv = &padapter->securitypriv;
2513 struct mlme_priv *mlmepriv = &padapter->mlmepriv;
2514
2515 /* check if need to handle uc_swdec_pending_queue*/
2516 if (check_fwstate(mlmepriv, WIFI_STATION_STATE) && psecuritypriv->busetkipkey) {
2517 union recv_frame *pending_frame;
2518 int cnt = 0;
2519
2520 while ((pending_frame = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue))) {
2521 cnt++;
2522 DBG_COUNTER(padapter->rx_logs.core_rx_dequeue);
2523 recv_func_posthandle(padapter, pending_frame);
2524 }
2525
2526 if (cnt)
2527 DBG_871X(FUNC_ADPT_FMT" dequeue %d from uc_swdec_pending_queue\n",
2528 FUNC_ADPT_ARG(padapter), cnt);
2529 }
2530
2531 DBG_COUNTER(padapter->rx_logs.core_rx);
2532 ret = recv_func_prehandle(padapter, rframe);
2533
2534 if (ret == _SUCCESS) {
2535
2536 /* check if need to enqueue into uc_swdec_pending_queue*/
2537 if (check_fwstate(mlmepriv, WIFI_STATION_STATE) &&
2538 !IS_MCAST(prxattrib->ra) && prxattrib->encrypt > 0 &&
2539 (prxattrib->bdecrypted == 0 || psecuritypriv->sw_decrypt == true) &&
2540 psecuritypriv->ndisauthtype == Ndis802_11AuthModeWPAPSK &&
2541 !psecuritypriv->busetkipkey) {
2542 DBG_COUNTER(padapter->rx_logs.core_rx_enqueue);
2543 rtw_enqueue_recvframe(rframe, &padapter->recvpriv.uc_swdec_pending_queue);
2544 /* DBG_871X("%s: no key, enqueue uc_swdec_pending_queue\n", __func__); */
2545
2546 if (recvpriv->free_recvframe_cnt < NR_RECVFRAME/4) {
2547 /* to prevent from recvframe starvation, get recvframe from uc_swdec_pending_queue to free_recvframe_cnt */
2548 rframe = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue);
2549 if (rframe)
2550 goto do_posthandle;
2551 }
2552 goto exit;
2553 }
2554
2555 do_posthandle:
2556 ret = recv_func_posthandle(padapter, rframe);
2557 }
2558
2559 exit:
2560 return ret;
2561 }
2562
2563
rtw_recv_entry(union recv_frame * precvframe)2564 s32 rtw_recv_entry(union recv_frame *precvframe)
2565 {
2566 struct adapter *padapter;
2567 struct recv_priv *precvpriv;
2568 s32 ret = _SUCCESS;
2569
2570 /* RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("+rtw_recv_entry\n")); */
2571
2572 padapter = precvframe->u.hdr.adapter;
2573
2574 precvpriv = &padapter->recvpriv;
2575
2576 ret = recv_func(padapter, precvframe);
2577 if (ret == _FAIL) {
2578 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("rtw_recv_entry: recv_func return fail!!!\n"));
2579 goto _recv_entry_drop;
2580 }
2581
2582
2583 precvpriv->rx_pkts++;
2584
2585 return ret;
2586
2587 _recv_entry_drop:
2588
2589 /* RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("_recv_entry_drop\n")); */
2590
2591 return ret;
2592 }
2593
rtw_signal_stat_timer_hdl(struct timer_list * t)2594 static void rtw_signal_stat_timer_hdl(struct timer_list *t)
2595 {
2596 struct adapter *adapter =
2597 from_timer(adapter, t, recvpriv.signal_stat_timer);
2598 struct recv_priv *recvpriv = &adapter->recvpriv;
2599
2600 u32 tmp_s, tmp_q;
2601 u8 avg_signal_strength = 0;
2602 u8 avg_signal_qual = 0;
2603 u32 num_signal_strength = 0;
2604 u32 num_signal_qual = 0;
2605 u8 _alpha = 5; /* this value is based on converging_constant = 5000 and sampling_interval = 1000 */
2606
2607 if (adapter->recvpriv.is_signal_dbg) {
2608 /* update the user specific value, signal_strength_dbg, to signal_strength, rssi */
2609 adapter->recvpriv.signal_strength = adapter->recvpriv.signal_strength_dbg;
2610 adapter->recvpriv.rssi = (s8)translate_percentage_to_dbm((u8)adapter->recvpriv.signal_strength_dbg);
2611 } else {
2612
2613 if (recvpriv->signal_strength_data.update_req == 0) {/* update_req is clear, means we got rx */
2614 avg_signal_strength = recvpriv->signal_strength_data.avg_val;
2615 num_signal_strength = recvpriv->signal_strength_data.total_num;
2616 /* after avg_vals are accquired, we can re-stat the signal values */
2617 recvpriv->signal_strength_data.update_req = 1;
2618 }
2619
2620 if (recvpriv->signal_qual_data.update_req == 0) {/* update_req is clear, means we got rx */
2621 avg_signal_qual = recvpriv->signal_qual_data.avg_val;
2622 num_signal_qual = recvpriv->signal_qual_data.total_num;
2623 /* after avg_vals are accquired, we can re-stat the signal values */
2624 recvpriv->signal_qual_data.update_req = 1;
2625 }
2626
2627 if (num_signal_strength == 0) {
2628 if (rtw_get_on_cur_ch_time(adapter) == 0
2629 || jiffies_to_msecs(jiffies - rtw_get_on_cur_ch_time(adapter)) < 2 * adapter->mlmeextpriv.mlmext_info.bcn_interval
2630 ) {
2631 goto set_timer;
2632 }
2633 }
2634
2635 if (check_fwstate(&adapter->mlmepriv, _FW_UNDER_SURVEY) == true
2636 || check_fwstate(&adapter->mlmepriv, _FW_LINKED) == false
2637 ) {
2638 goto set_timer;
2639 }
2640
2641 /* update value of signal_strength, rssi, signal_qual */
2642 tmp_s = (avg_signal_strength+(_alpha-1)*recvpriv->signal_strength);
2643 if (tmp_s % _alpha)
2644 tmp_s = tmp_s/_alpha + 1;
2645 else
2646 tmp_s = tmp_s/_alpha;
2647 if (tmp_s > 100)
2648 tmp_s = 100;
2649
2650 tmp_q = (avg_signal_qual+(_alpha-1)*recvpriv->signal_qual);
2651 if (tmp_q % _alpha)
2652 tmp_q = tmp_q/_alpha + 1;
2653 else
2654 tmp_q = tmp_q/_alpha;
2655 if (tmp_q > 100)
2656 tmp_q = 100;
2657
2658 recvpriv->signal_strength = tmp_s;
2659 recvpriv->rssi = (s8)translate_percentage_to_dbm(tmp_s);
2660 recvpriv->signal_qual = tmp_q;
2661
2662 #if defined(DBG_RX_SIGNAL_DISPLAY_PROCESSING) && 1
2663 DBG_871X(FUNC_ADPT_FMT" signal_strength:%3u, rssi:%3d, signal_qual:%3u"
2664 ", num_signal_strength:%u, num_signal_qual:%u"
2665 ", on_cur_ch_ms:%d"
2666 "\n"
2667 , FUNC_ADPT_ARG(adapter)
2668 , recvpriv->signal_strength
2669 , recvpriv->rssi
2670 , recvpriv->signal_qual
2671 , num_signal_strength, num_signal_qual
2672 , rtw_get_on_cur_ch_time(adapter) ? jiffies_to_msecs(jiffies - rtw_get_on_cur_ch_time(adapter)) : 0
2673 );
2674 #endif
2675 }
2676
2677 set_timer:
2678 rtw_set_signal_stat_timer(recvpriv);
2679
2680 }
2681
