1 // SPDX-License-Identifier: GPL-2.0
2 /******************************************************************************
3 *
4 * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
5 *
6 ******************************************************************************/
7 #define _RTW_RECV_C_
8
9 #include <drv_types.h>
10 #include <rtw_debug.h>
11 #include <linux/jiffies.h>
12 #include <rtw_recv.h>
13 #include <net/cfg80211.h>
14 #include <asm/unaligned.h>
15
16 static u8 SNAP_ETH_TYPE_IPX[2] = {0x81, 0x37};
17 static u8 SNAP_ETH_TYPE_APPLETALK_AARP[2] = {0x80, 0xf3};
18
19 static void rtw_signal_stat_timer_hdl(struct timer_list *t);
20
_rtw_init_sta_recv_priv(struct sta_recv_priv * psta_recvpriv)21 void _rtw_init_sta_recv_priv(struct sta_recv_priv *psta_recvpriv)
22 {
23 memset((u8 *)psta_recvpriv, 0, sizeof(struct sta_recv_priv));
24
25 spin_lock_init(&psta_recvpriv->lock);
26
27 /* for (i = 0; i<MAX_RX_NUMBLKS; i++) */
28 /* _rtw_init_queue(&psta_recvpriv->blk_strms[i]); */
29
30 _rtw_init_queue(&psta_recvpriv->defrag_q);
31 }
32
_rtw_init_recv_priv(struct recv_priv * precvpriv,struct adapter * padapter)33 sint _rtw_init_recv_priv(struct recv_priv *precvpriv, struct adapter *padapter)
34 {
35 sint i;
36 union recv_frame *precvframe;
37 sint res = _SUCCESS;
38
39 spin_lock_init(&precvpriv->lock);
40
41 _rtw_init_queue(&precvpriv->free_recv_queue);
42 _rtw_init_queue(&precvpriv->recv_pending_queue);
43 _rtw_init_queue(&precvpriv->uc_swdec_pending_queue);
44
45 precvpriv->adapter = padapter;
46
47 precvpriv->free_recvframe_cnt = NR_RECVFRAME;
48
49 precvpriv->pallocated_frame_buf = vzalloc(NR_RECVFRAME * sizeof(union recv_frame) + RXFRAME_ALIGN_SZ);
50
51 if (!precvpriv->pallocated_frame_buf) {
52 res = _FAIL;
53 goto exit;
54 }
55
56 precvpriv->precv_frame_buf = (u8 *)N_BYTE_ALIGMENT((SIZE_PTR)(precvpriv->pallocated_frame_buf), RXFRAME_ALIGN_SZ);
57 /* precvpriv->precv_frame_buf = precvpriv->pallocated_frame_buf + RXFRAME_ALIGN_SZ - */
58 /* ((SIZE_PTR) (precvpriv->pallocated_frame_buf) &(RXFRAME_ALIGN_SZ-1)); */
59
60 precvframe = (union recv_frame *) precvpriv->precv_frame_buf;
61
62
63 for (i = 0; i < NR_RECVFRAME; i++) {
64 INIT_LIST_HEAD(&(precvframe->u.list));
65
66 list_add_tail(&(precvframe->u.list), &(precvpriv->free_recv_queue.queue));
67
68 rtw_os_recv_resource_alloc(padapter, precvframe);
69
70 precvframe->u.hdr.len = 0;
71
72 precvframe->u.hdr.adapter = padapter;
73 precvframe++;
74
75 }
76
77 res = rtw_hal_init_recv_priv(padapter);
78
79 timer_setup(&precvpriv->signal_stat_timer, rtw_signal_stat_timer_hdl,
80 0);
81
82 precvpriv->signal_stat_sampling_interval = 2000; /* ms */
83
84 rtw_set_signal_stat_timer(precvpriv);
85
86 exit:
87 return res;
88 }
89
_rtw_free_recv_priv(struct recv_priv * precvpriv)90 void _rtw_free_recv_priv(struct recv_priv *precvpriv)
91 {
92 struct adapter *padapter = precvpriv->adapter;
93
94 rtw_free_uc_swdec_pending_queue(padapter);
95
96 rtw_os_recv_resource_free(precvpriv);
97
98 if (precvpriv->pallocated_frame_buf)
99 vfree(precvpriv->pallocated_frame_buf);
100
101 rtw_hal_free_recv_priv(padapter);
102 }
103
_rtw_alloc_recvframe(struct __queue * pfree_recv_queue)104 union recv_frame *_rtw_alloc_recvframe(struct __queue *pfree_recv_queue)
105 {
106
107 union recv_frame *precvframe;
108 struct list_head *plist, *phead;
109 struct adapter *padapter;
110 struct recv_priv *precvpriv;
111
112 if (list_empty(&pfree_recv_queue->queue))
113 precvframe = NULL;
114 else {
115 phead = get_list_head(pfree_recv_queue);
116
117 plist = get_next(phead);
118
119 precvframe = (union recv_frame *)plist;
120
121 list_del_init(&precvframe->u.hdr.list);
122 padapter = precvframe->u.hdr.adapter;
123 if (padapter) {
124 precvpriv = &padapter->recvpriv;
125 if (pfree_recv_queue == &precvpriv->free_recv_queue)
126 precvpriv->free_recvframe_cnt--;
127 }
128 }
129 return precvframe;
130 }
131
rtw_alloc_recvframe(struct __queue * pfree_recv_queue)132 union recv_frame *rtw_alloc_recvframe(struct __queue *pfree_recv_queue)
133 {
134 union recv_frame *precvframe;
135
136 spin_lock_bh(&pfree_recv_queue->lock);
137
138 precvframe = _rtw_alloc_recvframe(pfree_recv_queue);
139
140 spin_unlock_bh(&pfree_recv_queue->lock);
141
142 return precvframe;
143 }
144
rtw_free_recvframe(union recv_frame * precvframe,struct __queue * pfree_recv_queue)145 int rtw_free_recvframe(union recv_frame *precvframe, struct __queue *pfree_recv_queue)
146 {
147 struct adapter *padapter = precvframe->u.hdr.adapter;
148 struct recv_priv *precvpriv = &padapter->recvpriv;
149
150 rtw_os_free_recvframe(precvframe);
151
152
153 spin_lock_bh(&pfree_recv_queue->lock);
154
155 list_del_init(&(precvframe->u.hdr.list));
156
157 precvframe->u.hdr.len = 0;
158
159 list_add_tail(&(precvframe->u.hdr.list), get_list_head(pfree_recv_queue));
160
161 if (padapter) {
162 if (pfree_recv_queue == &precvpriv->free_recv_queue)
163 precvpriv->free_recvframe_cnt++;
164 }
165 spin_unlock_bh(&pfree_recv_queue->lock);
166 return _SUCCESS;
167 }
168
169
170
171
_rtw_enqueue_recvframe(union recv_frame * precvframe,struct __queue * queue)172 sint _rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue)
173 {
174
175 struct adapter *padapter = precvframe->u.hdr.adapter;
176 struct recv_priv *precvpriv = &padapter->recvpriv;
177
178 /* INIT_LIST_HEAD(&(precvframe->u.hdr.list)); */
179 list_del_init(&(precvframe->u.hdr.list));
180
181
182 list_add_tail(&(precvframe->u.hdr.list), get_list_head(queue));
183
184 if (padapter)
185 if (queue == &precvpriv->free_recv_queue)
186 precvpriv->free_recvframe_cnt++;
187
188 return _SUCCESS;
189 }
190
rtw_enqueue_recvframe(union recv_frame * precvframe,struct __queue * queue)191 sint rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue)
192 {
193 sint ret;
194
195 /* _spinlock(&pfree_recv_queue->lock); */
196 spin_lock_bh(&queue->lock);
197 ret = _rtw_enqueue_recvframe(precvframe, queue);
198 /* spin_unlock(&pfree_recv_queue->lock); */
199 spin_unlock_bh(&queue->lock);
200
201 return ret;
202 }
203
204 /*
205 sint rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue)
206 {
207 return rtw_free_recvframe(precvframe, queue);
208 }
209 */
210
211
212
213
214 /*
215 caller : defrag ; recvframe_chk_defrag in recv_thread (passive)
216 pframequeue: defrag_queue : will be accessed in recv_thread (passive)
217
218 using spinlock to protect
219
220 */
221
rtw_free_recvframe_queue(struct __queue * pframequeue,struct __queue * pfree_recv_queue)222 void rtw_free_recvframe_queue(struct __queue *pframequeue, struct __queue *pfree_recv_queue)
223 {
224 union recv_frame *precvframe;
225 struct list_head *plist, *phead;
226
227 spin_lock(&pframequeue->lock);
228
229 phead = get_list_head(pframequeue);
230 plist = get_next(phead);
231
232 while (phead != plist) {
233 precvframe = (union recv_frame *)plist;
234
235 plist = get_next(plist);
236
237 rtw_free_recvframe(precvframe, pfree_recv_queue);
238 }
239
240 spin_unlock(&pframequeue->lock);
241 }
242
rtw_free_uc_swdec_pending_queue(struct adapter * adapter)243 u32 rtw_free_uc_swdec_pending_queue(struct adapter *adapter)
244 {
245 u32 cnt = 0;
246 union recv_frame *pending_frame;
247 while ((pending_frame = rtw_alloc_recvframe(&adapter->recvpriv.uc_swdec_pending_queue))) {
248 rtw_free_recvframe(pending_frame, &adapter->recvpriv.free_recv_queue);
249 cnt++;
250 }
251
252 if (cnt)
253 DBG_871X(FUNC_ADPT_FMT" dequeue %d\n", FUNC_ADPT_ARG(adapter), cnt);
254
255 return cnt;
256 }
257
258
rtw_enqueue_recvbuf_to_head(struct recv_buf * precvbuf,struct __queue * queue)259 sint rtw_enqueue_recvbuf_to_head(struct recv_buf *precvbuf, struct __queue *queue)
260 {
261 spin_lock_bh(&queue->lock);
262
263 list_del_init(&precvbuf->list);
264 list_add(&precvbuf->list, get_list_head(queue));
265
266 spin_unlock_bh(&queue->lock);
267
268 return _SUCCESS;
269 }
270
rtw_enqueue_recvbuf(struct recv_buf * precvbuf,struct __queue * queue)271 sint rtw_enqueue_recvbuf(struct recv_buf *precvbuf, struct __queue *queue)
272 {
273 spin_lock_bh(&queue->lock);
274
275 list_del_init(&precvbuf->list);
276
277 list_add_tail(&precvbuf->list, get_list_head(queue));
278 spin_unlock_bh(&queue->lock);
279 return _SUCCESS;
280
281 }
282
rtw_dequeue_recvbuf(struct __queue * queue)283 struct recv_buf *rtw_dequeue_recvbuf(struct __queue *queue)
284 {
285 struct recv_buf *precvbuf;
286 struct list_head *plist, *phead;
287
288 spin_lock_bh(&queue->lock);
289
290 if (list_empty(&queue->queue))
291 precvbuf = NULL;
292 else {
293 phead = get_list_head(queue);
294
295 plist = get_next(phead);
296
297 precvbuf = LIST_CONTAINOR(plist, struct recv_buf, list);
298
299 list_del_init(&precvbuf->list);
300
301 }
302
303 spin_unlock_bh(&queue->lock);
304
305 return precvbuf;
306
307 }
308
309 sint recvframe_chkmic(struct adapter *adapter, union recv_frame *precvframe);
recvframe_chkmic(struct adapter * adapter,union recv_frame * precvframe)310 sint recvframe_chkmic(struct adapter *adapter, union recv_frame *precvframe)
311 {
312
313 sint i, res = _SUCCESS;
314 u32 datalen;
315 u8 miccode[8];
316 u8 bmic_err = false, brpt_micerror = true;
317 u8 *pframe, *payload, *pframemic;
318 u8 *mickey;
319 /* u8 *iv, rxdata_key_idx = 0; */
320 struct sta_info *stainfo;
321 struct rx_pkt_attrib *prxattrib = &precvframe->u.hdr.attrib;
322 struct security_priv *psecuritypriv = &adapter->securitypriv;
323
324 struct mlme_ext_priv *pmlmeext = &adapter->mlmeextpriv;
325 struct mlme_ext_info *pmlmeinfo = &(pmlmeext->mlmext_info);
326
327 stainfo = rtw_get_stainfo(&adapter->stapriv, &prxattrib->ta[0]);
328
329 if (prxattrib->encrypt == _TKIP_) {
330 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n recvframe_chkmic:prxattrib->encrypt == _TKIP_\n"));
331 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",
332 prxattrib->ra[0], prxattrib->ra[1], prxattrib->ra[2], prxattrib->ra[3], prxattrib->ra[4], prxattrib->ra[5]));
333
334 /* calculate mic code */
335 if (stainfo) {
336 if (IS_MCAST(prxattrib->ra)) {
337 /* mickey =&psecuritypriv->dot118021XGrprxmickey.skey[0]; */
338 /* iv = precvframe->u.hdr.rx_data+prxattrib->hdrlen; */
339 /* rxdata_key_idx =(((iv[3])>>6)&0x3) ; */
340 mickey = &psecuritypriv->dot118021XGrprxmickey[prxattrib->key_index].skey[0];
341
342 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n recvframe_chkmic: bcmc key\n"));
343 /* DBG_871X("\n recvframe_chkmic: bcmc key psecuritypriv->dot118021XGrpKeyid(%d), pmlmeinfo->key_index(%d) , recv key_id(%d)\n", */
344 /* psecuritypriv->dot118021XGrpKeyid, pmlmeinfo->key_index, rxdata_key_idx); */
345
346 if (psecuritypriv->binstallGrpkey == false) {
347 res = _FAIL;
348 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("\n recvframe_chkmic:didn't install group key!!!!!!!!!!\n"));
349 DBG_871X("\n recvframe_chkmic:didn't install group key!!!!!!!!!!\n");
350 goto exit;
351 }
352 } else {
353 mickey = &stainfo->dot11tkiprxmickey.skey[0];
354 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("\n recvframe_chkmic: unicast key\n"));
355 }
356
357 datalen = precvframe->u.hdr.len-prxattrib->hdrlen-prxattrib->iv_len-prxattrib->icv_len-8;/* icv_len included the mic code */
358 pframe = precvframe->u.hdr.rx_data;
359 payload = pframe+prxattrib->hdrlen+prxattrib->iv_len;
360
361 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n prxattrib->iv_len =%d prxattrib->icv_len =%d\n", prxattrib->iv_len, prxattrib->icv_len));
362
363
364 rtw_seccalctkipmic(mickey, pframe, payload, datalen, &miccode[0], (unsigned char)prxattrib->priority); /* care the length of the data */
365
366 pframemic = payload+datalen;
367
368 bmic_err = false;
369
370 for (i = 0; i < 8; i++) {
371 if (miccode[i] != *(pframemic+i)) {
372 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvframe_chkmic:miccode[%d](%02x) != *(pframemic+%d)(%02x) ", i, miccode[i], i, *(pframemic+i)));
373 bmic_err = true;
374 }
375 }
376
377
378 if (bmic_err == true) {
379
380 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",
381 *(pframemic-8), *(pframemic-7), *(pframemic-6), *(pframemic-5), *(pframemic-4), *(pframemic-3), *(pframemic-2), *(pframemic-1)));
382 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",
383 *(pframemic-16), *(pframemic-15), *(pframemic-14), *(pframemic-13), *(pframemic-12), *(pframemic-11), *(pframemic-10), *(pframemic-9)));
384
385 {
386 uint i;
387 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("\n ======demp packet (len =%d) ======\n", precvframe->u.hdr.len));
388 for (i = 0; i < precvframe->u.hdr.len; i = i+8) {
389 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x",
390 *(precvframe->u.hdr.rx_data+i), *(precvframe->u.hdr.rx_data+i+1),
391 *(precvframe->u.hdr.rx_data+i+2), *(precvframe->u.hdr.rx_data+i+3),
392 *(precvframe->u.hdr.rx_data+i+4), *(precvframe->u.hdr.rx_data+i+5),
393 *(precvframe->u.hdr.rx_data+i+6), *(precvframe->u.hdr.rx_data+i+7)));
394 }
395 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("\n ======demp packet end [len =%d]======\n", precvframe->u.hdr.len));
396 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("\n hrdlen =%d,\n", prxattrib->hdrlen));
397 }
398
399 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("ra = 0x%.2x 0x%.2x 0x%.2x 0x%.2x 0x%.2x 0x%.2x psecuritypriv->binstallGrpkey =%d ",
400 prxattrib->ra[0], prxattrib->ra[1], prxattrib->ra[2],
401 prxattrib->ra[3], prxattrib->ra[4], prxattrib->ra[5], psecuritypriv->binstallGrpkey));
402
403 /* double check key_index for some timing issue , */
404 /* cannot compare with psecuritypriv->dot118021XGrpKeyid also cause timing issue */
405 if ((IS_MCAST(prxattrib->ra) == true) && (prxattrib->key_index != pmlmeinfo->key_index))
406 brpt_micerror = false;
407
408 if ((prxattrib->bdecrypted == true) && (brpt_micerror == true)) {
409 rtw_handle_tkip_mic_err(adapter, (u8)IS_MCAST(prxattrib->ra));
410 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" mic error :prxattrib->bdecrypted =%d ", prxattrib->bdecrypted));
411 DBG_871X(" mic error :prxattrib->bdecrypted =%d\n", prxattrib->bdecrypted);
412 } else {
413 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" mic error :prxattrib->bdecrypted =%d ", prxattrib->bdecrypted));
414 DBG_871X(" mic error :prxattrib->bdecrypted =%d\n", prxattrib->bdecrypted);
415 }
416
417 res = _FAIL;
418
419 } else {
420 /* mic checked ok */
421 if ((psecuritypriv->bcheck_grpkey == false) && (IS_MCAST(prxattrib->ra) == true)) {
422 psecuritypriv->bcheck_grpkey = true;
423 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("psecuritypriv->bcheck_grpkey =true"));
424 }
425 }
426
427 } else
428 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvframe_chkmic: rtw_get_stainfo == NULL!!!\n"));
429
430 recvframe_pull_tail(precvframe, 8);
431
432 }
433
434 exit:
435 return res;
436
437 }
438
439 /* decrypt and set the ivlen, icvlen of the recv_frame */
440 union recv_frame *decryptor(struct adapter *padapter, union recv_frame *precv_frame);
decryptor(struct adapter * padapter,union recv_frame * precv_frame)441 union recv_frame *decryptor(struct adapter *padapter, union recv_frame *precv_frame)
442 {
443
444 struct rx_pkt_attrib *prxattrib = &precv_frame->u.hdr.attrib;
445 struct security_priv *psecuritypriv = &padapter->securitypriv;
446 union recv_frame *return_packet = precv_frame;
447 u32 res = _SUCCESS;
448
449 DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt);
450
451 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("prxstat->decrypted =%x prxattrib->encrypt = 0x%03x\n", prxattrib->bdecrypted, prxattrib->encrypt));
452
453 if (prxattrib->encrypt > 0) {
454 u8 *iv = precv_frame->u.hdr.rx_data+prxattrib->hdrlen;
455 prxattrib->key_index = (((iv[3])>>6)&0x3);
456
457 if (prxattrib->key_index > WEP_KEYS) {
458 DBG_871X("prxattrib->key_index(%d) > WEP_KEYS\n", prxattrib->key_index);
459
460 switch (prxattrib->encrypt) {
461 case _WEP40_:
462 case _WEP104_:
463 prxattrib->key_index = psecuritypriv->dot11PrivacyKeyIndex;
464 break;
465 case _TKIP_:
466 case _AES_:
467 default:
468 prxattrib->key_index = psecuritypriv->dot118021XGrpKeyid;
469 break;
470 }
471 }
472 }
473
474 if ((prxattrib->encrypt > 0) && ((prxattrib->bdecrypted == 0) || (psecuritypriv->sw_decrypt == true))) {
475 psecuritypriv->hw_decrypted = false;
476
477 #ifdef DBG_RX_DECRYPTOR
478 DBG_871X("[%s] %d:prxstat->bdecrypted:%d, prxattrib->encrypt:%d, Setting psecuritypriv->hw_decrypted = %d\n",
479 __func__,
480 __LINE__,
481 prxattrib->bdecrypted,
482 prxattrib->encrypt,
483 psecuritypriv->hw_decrypted);
484 #endif
485
486 switch (prxattrib->encrypt) {
487 case _WEP40_:
488 case _WEP104_:
489 DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt_wep);
490 rtw_wep_decrypt(padapter, (u8 *)precv_frame);
491 break;
492 case _TKIP_:
493 DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt_tkip);
494 res = rtw_tkip_decrypt(padapter, (u8 *)precv_frame);
495 break;
496 case _AES_:
497 DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt_aes);
498 res = rtw_aes_decrypt(padapter, (u8 *)precv_frame);
499 break;
500 default:
501 break;
502 }
503 } else if (prxattrib->bdecrypted == 1
504 && prxattrib->encrypt > 0
505 && (psecuritypriv->busetkipkey == 1 || prxattrib->encrypt != _TKIP_)
506 ) {
507 DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt_hw);
508
509 psecuritypriv->hw_decrypted = true;
510 #ifdef DBG_RX_DECRYPTOR
511 DBG_871X("[%s] %d:prxstat->bdecrypted:%d, prxattrib->encrypt:%d, Setting psecuritypriv->hw_decrypted = %d\n",
512 __func__,
513 __LINE__,
514 prxattrib->bdecrypted,
515 prxattrib->encrypt,
516 psecuritypriv->hw_decrypted);
517
518 #endif
519 } else {
520 DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt_unknown);
521 #ifdef DBG_RX_DECRYPTOR
522 DBG_871X("[%s] %d:prxstat->bdecrypted:%d, prxattrib->encrypt:%d, Setting psecuritypriv->hw_decrypted = %d\n",
523 __func__,
524 __LINE__,
525 prxattrib->bdecrypted,
526 prxattrib->encrypt,
527 psecuritypriv->hw_decrypted);
528 #endif
529 }
530
531 if (res == _FAIL) {
532 rtw_free_recvframe(return_packet, &padapter->recvpriv.free_recv_queue);
533 return_packet = NULL;
534 } else
535 prxattrib->bdecrypted = true;
536
537 return return_packet;
538 }
539
540 /* set the security information in the recv_frame */
541 union recv_frame *portctrl(struct adapter *adapter, union recv_frame *precv_frame);
portctrl(struct adapter * adapter,union recv_frame * precv_frame)542 union recv_frame *portctrl(struct adapter *adapter, union recv_frame *precv_frame)
543 {
544 u8 *psta_addr = NULL;
545 u8 *ptr;
546 uint auth_alg;
547 struct recv_frame_hdr *pfhdr;
548 struct sta_info *psta;
549 struct sta_priv *pstapriv;
550 union recv_frame *prtnframe;
551 u16 ether_type = 0;
552 u16 eapol_type = 0x888e;/* for Funia BD's WPA issue */
553 struct rx_pkt_attrib *pattrib;
554
555 pstapriv = &adapter->stapriv;
556
557 auth_alg = adapter->securitypriv.dot11AuthAlgrthm;
558
559 ptr = get_recvframe_data(precv_frame);
560 pfhdr = &precv_frame->u.hdr;
561 pattrib = &pfhdr->attrib;
562 psta_addr = pattrib->ta;
563
564 prtnframe = NULL;
565
566 psta = rtw_get_stainfo(pstapriv, psta_addr);
567
568 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########portctrl:adapter->securitypriv.dot11AuthAlgrthm =%d\n", adapter->securitypriv.dot11AuthAlgrthm));
569
570 if (auth_alg == 2) {
571 if ((psta) && (psta->ieee8021x_blocked)) {
572 __be16 be_tmp;
573
574 /* blocked */
575 /* only accept EAPOL frame */
576 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########portctrl:psta->ieee8021x_blocked == 1\n"));
577
578 prtnframe = precv_frame;
579
580 /* get ether_type */
581 ptr = ptr+pfhdr->attrib.hdrlen+pfhdr->attrib.iv_len+LLC_HEADER_SIZE;
582 memcpy(&be_tmp, ptr, 2);
583 ether_type = ntohs(be_tmp);
584
585 if (ether_type == eapol_type)
586 prtnframe = precv_frame;
587 else {
588 /* free this frame */
589 rtw_free_recvframe(precv_frame, &adapter->recvpriv.free_recv_queue);
590 prtnframe = NULL;
591 }
592 } else {
593 /* allowed */
594 /* check decryption status, and decrypt the frame if needed */
595 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########portctrl:psta->ieee8021x_blocked == 0\n"));
596 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("portctrl:precv_frame->hdr.attrib.privacy =%x\n", precv_frame->u.hdr.attrib.privacy));
597
598 if (pattrib->bdecrypted == 0)
599 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("portctrl:prxstat->decrypted =%x\n", pattrib->bdecrypted));
600
601 prtnframe = precv_frame;
602 /* check is the EAPOL frame or not (Rekey) */
603 /* if (ether_type == eapol_type) { */
604 /* RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("########portctrl:ether_type == 0x888e\n")); */
605 /* check Rekey */
606
607 /* prtnframe =precv_frame; */
608 /* */
609 /* else { */
610 /* RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########portctrl:ether_type = 0x%04x\n", ether_type)); */
611 /* */
612 }
613 } else
614 prtnframe = precv_frame;
615
616 return prtnframe;
617 }
618
619 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)620 sint recv_decache(union recv_frame *precv_frame, u8 bretry, struct stainfo_rxcache *prxcache)
621 {
622 sint tid = precv_frame->u.hdr.attrib.priority;
623
624 u16 seq_ctrl = ((precv_frame->u.hdr.attrib.seq_num&0xffff) << 4) |
625 (precv_frame->u.hdr.attrib.frag_num & 0xf);
626
627 if (tid > 15) {
628 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("recv_decache, (tid>15)! seq_ctrl = 0x%x, tid = 0x%x\n", seq_ctrl, tid));
629
630 return _FAIL;
631 }
632
633 if (1) { /* if (bretry) */
634 if (seq_ctrl == prxcache->tid_rxseq[tid]) {
635 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]));
636
637 return _FAIL;
638 }
639 }
640
641 prxcache->tid_rxseq[tid] = seq_ctrl;
642
643 return _SUCCESS;
644
645 }
646
647 void process_pwrbit_data(struct adapter *padapter, union recv_frame *precv_frame);
process_pwrbit_data(struct adapter * padapter,union recv_frame * precv_frame)648 void process_pwrbit_data(struct adapter *padapter, union recv_frame *precv_frame)
649 {
650 unsigned char pwrbit;
651 u8 *ptr = precv_frame->u.hdr.rx_data;
652 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
653 struct sta_priv *pstapriv = &padapter->stapriv;
654 struct sta_info *psta = NULL;
655
656 psta = rtw_get_stainfo(pstapriv, pattrib->src);
657
658 pwrbit = GetPwrMgt(ptr);
659
660 if (psta) {
661 if (pwrbit) {
662 if (!(psta->state & WIFI_SLEEP_STATE)) {
663 /* psta->state |= WIFI_SLEEP_STATE; */
664 /* pstapriv->sta_dz_bitmap |= BIT(psta->aid); */
665
666 stop_sta_xmit(padapter, psta);
667
668 /* DBG_871X("to sleep, sta_dz_bitmap =%x\n", pstapriv->sta_dz_bitmap); */
669 }
670 } else {
671 if (psta->state & WIFI_SLEEP_STATE) {
672 /* psta->state ^= WIFI_SLEEP_STATE; */
673 /* pstapriv->sta_dz_bitmap &= ~BIT(psta->aid); */
674
675 wakeup_sta_to_xmit(padapter, psta);
676
677 /* DBG_871X("to wakeup, sta_dz_bitmap =%x\n", pstapriv->sta_dz_bitmap); */
678 }
679 }
680
681 }
682 }
683
684 void process_wmmps_data(struct adapter *padapter, union recv_frame *precv_frame);
process_wmmps_data(struct adapter * padapter,union recv_frame * precv_frame)685 void process_wmmps_data(struct adapter *padapter, union recv_frame *precv_frame)
686 {
687 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
688 struct sta_priv *pstapriv = &padapter->stapriv;
689 struct sta_info *psta = NULL;
690
691 psta = rtw_get_stainfo(pstapriv, pattrib->src);
692
693 if (!psta)
694 return;
695
696 if (!psta->qos_option)
697 return;
698
699 if (!(psta->qos_info&0xf))
700 return;
701
702 if (psta->state&WIFI_SLEEP_STATE) {
703 u8 wmmps_ac = 0;
704
705 switch (pattrib->priority) {
706 case 1:
707 case 2:
708 wmmps_ac = psta->uapsd_bk&BIT(1);
709 break;
710 case 4:
711 case 5:
712 wmmps_ac = psta->uapsd_vi&BIT(1);
713 break;
714 case 6:
715 case 7:
716 wmmps_ac = psta->uapsd_vo&BIT(1);
717 break;
718 case 0:
719 case 3:
720 default:
721 wmmps_ac = psta->uapsd_be&BIT(1);
722 break;
723 }
724
725 if (wmmps_ac) {
726 if (psta->sleepq_ac_len > 0)
727 /* process received triggered frame */
728 xmit_delivery_enabled_frames(padapter, psta);
729 else
730 /* issue one qos null frame with More data bit = 0 and the EOSP bit set (= 1) */
731 issue_qos_nulldata(padapter, psta->hwaddr, (u16)pattrib->priority, 0, 0);
732 }
733 }
734 }
735
736 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)737 void count_rx_stats(struct adapter *padapter, union recv_frame *prframe, struct sta_info *sta)
738 {
739 int sz;
740 struct sta_info *psta = NULL;
741 struct stainfo_stats *pstats = NULL;
742 struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib;
743 struct recv_priv *precvpriv = &padapter->recvpriv;
744
745 sz = get_recvframe_len(prframe);
746 precvpriv->rx_bytes += sz;
747
748 padapter->mlmepriv.LinkDetectInfo.NumRxOkInPeriod++;
749
750 if ((!MacAddr_isBcst(pattrib->dst)) && (!IS_MCAST(pattrib->dst))) {
751 padapter->mlmepriv.LinkDetectInfo.NumRxUnicastOkInPeriod++;
752 }
753
754 if (sta)
755 psta = sta;
756 else
757 psta = prframe->u.hdr.psta;
758
759 if (psta) {
760 pstats = &psta->sta_stats;
761
762 pstats->rx_data_pkts++;
763 pstats->rx_bytes += sz;
764 }
765
766 traffic_check_for_leave_lps(padapter, false, 0);
767 }
768
769 sint sta2sta_data_frame(
770 struct adapter *adapter,
771 union recv_frame *precv_frame,
772 struct sta_info **psta
773 );
sta2sta_data_frame(struct adapter * adapter,union recv_frame * precv_frame,struct sta_info ** psta)774 sint sta2sta_data_frame(
775 struct adapter *adapter,
776 union recv_frame *precv_frame,
777 struct sta_info **psta
778 )
779 {
780 u8 *ptr = precv_frame->u.hdr.rx_data;
781 sint ret = _SUCCESS;
782 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
783 struct sta_priv *pstapriv = &adapter->stapriv;
784 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
785 u8 *mybssid = get_bssid(pmlmepriv);
786 u8 *myhwaddr = myid(&adapter->eeprompriv);
787 u8 *sta_addr = NULL;
788 sint bmcast = IS_MCAST(pattrib->dst);
789
790 /* DBG_871X("[%s] %d, seqnum:%d\n", __func__, __LINE__, pattrib->seq_num); */
791
792 if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true) ||
793 (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) == true)) {
794
795 /* filter packets that SA is myself or multicast or broadcast */
796 if (!memcmp(myhwaddr, pattrib->src, ETH_ALEN)) {
797 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" SA ==myself\n"));
798 ret = _FAIL;
799 goto exit;
800 }
801
802 if ((memcmp(myhwaddr, pattrib->dst, ETH_ALEN)) && (!bmcast)) {
803 ret = _FAIL;
804 goto exit;
805 }
806
807 if (!memcmp(pattrib->bssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
808 !memcmp(mybssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
809 (memcmp(pattrib->bssid, mybssid, ETH_ALEN))) {
810 ret = _FAIL;
811 goto exit;
812 }
813
814 sta_addr = pattrib->src;
815
816 } else if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true) {
817 /* For Station mode, sa and bssid should always be BSSID, and DA is my mac-address */
818 if (memcmp(pattrib->bssid, pattrib->src, ETH_ALEN)) {
819 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("bssid != TA under STATION_MODE; drop pkt\n"));
820 ret = _FAIL;
821 goto exit;
822 }
823
824 sta_addr = pattrib->bssid;
825 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
826 if (bmcast) {
827 /* For AP mode, if DA == MCAST, then BSSID should be also MCAST */
828 if (!IS_MCAST(pattrib->bssid)) {
829 ret = _FAIL;
830 goto exit;
831 }
832 } else { /* not mc-frame */
833 /* For AP mode, if DA is non-MCAST, then it must be BSSID, and bssid == BSSID */
834 if (memcmp(pattrib->bssid, pattrib->dst, ETH_ALEN)) {
835 ret = _FAIL;
836 goto exit;
837 }
838
839 sta_addr = pattrib->src;
840 }
841
842 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
843 memcpy(pattrib->dst, GetAddr1Ptr(ptr), ETH_ALEN);
844 memcpy(pattrib->src, GetAddr2Ptr(ptr), ETH_ALEN);
845 memcpy(pattrib->bssid, GetAddr3Ptr(ptr), ETH_ALEN);
846 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
847 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
848
849 sta_addr = mybssid;
850 } else
851 ret = _FAIL;
852
853
854
855 if (bmcast)
856 *psta = rtw_get_bcmc_stainfo(adapter);
857 else
858 *psta = rtw_get_stainfo(pstapriv, sta_addr); /* get ap_info */
859
860 if (!*psta) {
861 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("can't get psta under sta2sta_data_frame ; drop pkt\n"));
862 ret = _FAIL;
863 goto exit;
864 }
865
866 exit:
867 return ret;
868 }
869
870 sint ap2sta_data_frame(
871 struct adapter *adapter,
872 union recv_frame *precv_frame,
873 struct sta_info **psta);
ap2sta_data_frame(struct adapter * adapter,union recv_frame * precv_frame,struct sta_info ** psta)874 sint ap2sta_data_frame(
875 struct adapter *adapter,
876 union recv_frame *precv_frame,
877 struct sta_info **psta)
878 {
879 u8 *ptr = precv_frame->u.hdr.rx_data;
880 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
881 sint ret = _SUCCESS;
882 struct sta_priv *pstapriv = &adapter->stapriv;
883 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
884 u8 *mybssid = get_bssid(pmlmepriv);
885 u8 *myhwaddr = myid(&adapter->eeprompriv);
886 sint bmcast = IS_MCAST(pattrib->dst);
887
888 if ((check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true)
889 && (check_fwstate(pmlmepriv, _FW_LINKED) == true
890 || check_fwstate(pmlmepriv, _FW_UNDER_LINKING) == true)
891 ) {
892
893 /* filter packets that SA is myself or multicast or broadcast */
894 if (!memcmp(myhwaddr, pattrib->src, ETH_ALEN)) {
895 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" SA ==myself\n"));
896 #ifdef DBG_RX_DROP_FRAME
897 DBG_871X("DBG_RX_DROP_FRAME %s SA ="MAC_FMT", myhwaddr ="MAC_FMT"\n",
898 __func__, MAC_ARG(pattrib->src), MAC_ARG(myhwaddr));
899 #endif
900 ret = _FAIL;
901 goto exit;
902 }
903
904 /* da should be for me */
905 if ((memcmp(myhwaddr, pattrib->dst, ETH_ALEN)) && (!bmcast)) {
906 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
907 (" ap2sta_data_frame: compare DA fail; DA ="MAC_FMT"\n", MAC_ARG(pattrib->dst)));
908 #ifdef DBG_RX_DROP_FRAME
909 DBG_871X("DBG_RX_DROP_FRAME %s DA ="MAC_FMT"\n", __func__, MAC_ARG(pattrib->dst));
910 #endif
911 ret = _FAIL;
912 goto exit;
913 }
914
915
916 /* check BSSID */
917 if (!memcmp(pattrib->bssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
918 !memcmp(mybssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
919 (memcmp(pattrib->bssid, mybssid, ETH_ALEN))) {
920 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
921 (" ap2sta_data_frame: compare BSSID fail ; BSSID ="MAC_FMT"\n", MAC_ARG(pattrib->bssid)));
922 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("mybssid ="MAC_FMT"\n", MAC_ARG(mybssid)));
923 #ifdef DBG_RX_DROP_FRAME
924 DBG_871X("DBG_RX_DROP_FRAME %s BSSID ="MAC_FMT", mybssid ="MAC_FMT"\n",
925 __func__, MAC_ARG(pattrib->bssid), MAC_ARG(mybssid));
926 DBG_871X("this adapter = %d, buddy adapter = %d\n", adapter->adapter_type, adapter->pbuddystruct adapter->adapter_type);
927 #endif
928
929 if (!bmcast) {
930 DBG_871X("issue_deauth to the nonassociated ap =" MAC_FMT " for the reason(7)\n", MAC_ARG(pattrib->bssid));
931 issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
932 }
933
934 ret = _FAIL;
935 goto exit;
936 }
937
938 if (bmcast)
939 *psta = rtw_get_bcmc_stainfo(adapter);
940 else
941 *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get ap_info */
942
943 if (!*psta) {
944 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("ap2sta: can't get psta under STATION_MODE ; drop pkt\n"));
945 #ifdef DBG_RX_DROP_FRAME
946 DBG_871X("DBG_RX_DROP_FRAME %s can't get psta under STATION_MODE ; drop pkt\n", __func__);
947 #endif
948 ret = _FAIL;
949 goto exit;
950 }
951
952 if ((GetFrameSubType(ptr) & WIFI_QOS_DATA_TYPE) == WIFI_QOS_DATA_TYPE) {
953 }
954
955 if (GetFrameSubType(ptr) & BIT(6)) {
956 /* No data, will not indicate to upper layer, temporily count it here */
957 count_rx_stats(adapter, precv_frame, *psta);
958 ret = RTW_RX_HANDLED;
959 goto exit;
960 }
961
962 } else if ((check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) &&
963 (check_fwstate(pmlmepriv, _FW_LINKED) == true)) {
964 memcpy(pattrib->dst, GetAddr1Ptr(ptr), ETH_ALEN);
965 memcpy(pattrib->src, GetAddr2Ptr(ptr), ETH_ALEN);
966 memcpy(pattrib->bssid, GetAddr3Ptr(ptr), ETH_ALEN);
967 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
968 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
969
970 /* */
971 memcpy(pattrib->bssid, mybssid, ETH_ALEN);
972
973
974 *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get sta_info */
975 if (!*psta) {
976 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("can't get psta under MP_MODE ; drop pkt\n"));
977 #ifdef DBG_RX_DROP_FRAME
978 DBG_871X("DBG_RX_DROP_FRAME %s can't get psta under WIFI_MP_STATE ; drop pkt\n", __func__);
979 #endif
980 ret = _FAIL;
981 goto exit;
982 }
983
984
985 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
986 /* Special case */
987 ret = RTW_RX_HANDLED;
988 goto exit;
989 } else {
990 if (!memcmp(myhwaddr, pattrib->dst, ETH_ALEN) && (!bmcast)) {
991 *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get sta_info */
992 if (!*psta) {
993
994 /* for AP multicast issue , modify by yiwei */
995 static unsigned long send_issue_deauth_time;
996
997 /* DBG_871X("After send deauth , %u ms has elapsed.\n", jiffies_to_msecs(jiffies - send_issue_deauth_time)); */
998
999 if (jiffies_to_msecs(jiffies - send_issue_deauth_time) > 10000 || send_issue_deauth_time == 0) {
1000 send_issue_deauth_time = jiffies;
1001
1002 DBG_871X("issue_deauth to the ap =" MAC_FMT " for the reason(7)\n", MAC_ARG(pattrib->bssid));
1003
1004 issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1005 }
1006 }
1007 }
1008
1009 ret = _FAIL;
1010 #ifdef DBG_RX_DROP_FRAME
1011 DBG_871X("DBG_RX_DROP_FRAME %s fw_state:0x%x\n", __func__, get_fwstate(pmlmepriv));
1012 #endif
1013 }
1014
1015 exit:
1016 return ret;
1017 }
1018
1019 sint sta2ap_data_frame(
1020 struct adapter *adapter,
1021 union recv_frame *precv_frame,
1022 struct sta_info **psta);
sta2ap_data_frame(struct adapter * adapter,union recv_frame * precv_frame,struct sta_info ** psta)1023 sint sta2ap_data_frame(
1024 struct adapter *adapter,
1025 union recv_frame *precv_frame,
1026 struct sta_info **psta)
1027 {
1028 u8 *ptr = precv_frame->u.hdr.rx_data;
1029 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
1030 struct sta_priv *pstapriv = &adapter->stapriv;
1031 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
1032 unsigned char *mybssid = get_bssid(pmlmepriv);
1033 sint ret = _SUCCESS;
1034
1035 if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
1036 /* For AP mode, RA =BSSID, TX =STA(SRC_ADDR), A3 =DST_ADDR */
1037 if (memcmp(pattrib->bssid, mybssid, ETH_ALEN)) {
1038 ret = _FAIL;
1039 goto exit;
1040 }
1041
1042 *psta = rtw_get_stainfo(pstapriv, pattrib->src);
1043 if (!*psta) {
1044 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("can't get psta under AP_MODE; drop pkt\n"));
1045 DBG_871X("issue_deauth to sta =" MAC_FMT " for the reason(7)\n", MAC_ARG(pattrib->src));
1046
1047 issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1048
1049 ret = RTW_RX_HANDLED;
1050 goto exit;
1051 }
1052
1053 process_pwrbit_data(adapter, precv_frame);
1054
1055 if ((GetFrameSubType(ptr) & WIFI_QOS_DATA_TYPE) == WIFI_QOS_DATA_TYPE) {
1056 process_wmmps_data(adapter, precv_frame);
1057 }
1058
1059 if (GetFrameSubType(ptr) & BIT(6)) {
1060 /* No data, will not indicate to upper layer, temporily count it here */
1061 count_rx_stats(adapter, precv_frame, *psta);
1062 ret = RTW_RX_HANDLED;
1063 goto exit;
1064 }
1065 } else {
1066 u8 *myhwaddr = myid(&adapter->eeprompriv);
1067 if (memcmp(pattrib->ra, myhwaddr, ETH_ALEN)) {
1068 ret = RTW_RX_HANDLED;
1069 goto exit;
1070 }
1071 DBG_871X("issue_deauth to sta =" MAC_FMT " for the reason(7)\n", MAC_ARG(pattrib->src));
1072 issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1073 ret = RTW_RX_HANDLED;
1074 goto exit;
1075 }
1076
1077 exit:
1078 return ret;
1079 }
1080
1081 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)1082 sint validate_recv_ctrl_frame(struct adapter *padapter, union recv_frame *precv_frame)
1083 {
1084 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
1085 struct sta_priv *pstapriv = &padapter->stapriv;
1086 u8 *pframe = precv_frame->u.hdr.rx_data;
1087 struct sta_info *psta = NULL;
1088 /* uint len = precv_frame->u.hdr.len; */
1089
1090 /* DBG_871X("+validate_recv_ctrl_frame\n"); */
1091
1092 if (GetFrameType(pframe) != WIFI_CTRL_TYPE)
1093 return _FAIL;
1094
1095 /* receive the frames that ra(a1) is my address */
1096 if (memcmp(GetAddr1Ptr(pframe), myid(&padapter->eeprompriv), ETH_ALEN))
1097 return _FAIL;
1098
1099 psta = rtw_get_stainfo(pstapriv, GetAddr2Ptr(pframe));
1100 if (!psta)
1101 return _FAIL;
1102
1103 /* for rx pkt statistics */
1104 psta->sta_stats.rx_ctrl_pkts++;
1105
1106 /* only handle ps-poll */
1107 if (GetFrameSubType(pframe) == WIFI_PSPOLL) {
1108 u16 aid;
1109 u8 wmmps_ac = 0;
1110
1111 aid = GetAid(pframe);
1112 if (psta->aid != aid)
1113 return _FAIL;
1114
1115 switch (pattrib->priority) {
1116 case 1:
1117 case 2:
1118 wmmps_ac = psta->uapsd_bk&BIT(0);
1119 break;
1120 case 4:
1121 case 5:
1122 wmmps_ac = psta->uapsd_vi&BIT(0);
1123 break;
1124 case 6:
1125 case 7:
1126 wmmps_ac = psta->uapsd_vo&BIT(0);
1127 break;
1128 case 0:
1129 case 3:
1130 default:
1131 wmmps_ac = psta->uapsd_be&BIT(0);
1132 break;
1133 }
1134
1135 if (wmmps_ac)
1136 return _FAIL;
1137
1138 if (psta->state & WIFI_STA_ALIVE_CHK_STATE) {
1139 DBG_871X("%s alive check-rx ps-poll\n", __func__);
1140 psta->expire_to = pstapriv->expire_to;
1141 psta->state ^= WIFI_STA_ALIVE_CHK_STATE;
1142 }
1143
1144 if ((psta->state&WIFI_SLEEP_STATE) && (pstapriv->sta_dz_bitmap&BIT(psta->aid))) {
1145 struct list_head *xmitframe_plist, *xmitframe_phead;
1146 struct xmit_frame *pxmitframe = NULL;
1147
1148 spin_lock_bh(&psta->sleep_q.lock);
1149
1150 xmitframe_phead = get_list_head(&psta->sleep_q);
1151 xmitframe_plist = get_next(xmitframe_phead);
1152
1153 if (xmitframe_phead != xmitframe_plist) {
1154 pxmitframe = LIST_CONTAINOR(xmitframe_plist, struct xmit_frame, list);
1155
1156 xmitframe_plist = get_next(xmitframe_plist);
1157
1158 list_del_init(&pxmitframe->list);
1159
1160 psta->sleepq_len--;
1161
1162 if (psta->sleepq_len > 0)
1163 pxmitframe->attrib.mdata = 1;
1164 else
1165 pxmitframe->attrib.mdata = 0;
1166
1167 pxmitframe->attrib.triggered = 1;
1168
1169 /* DBG_871X("handling ps-poll, q_len =%d, tim =%x\n", psta->sleepq_len, pstapriv->tim_bitmap); */
1170
1171 rtw_hal_xmitframe_enqueue(padapter, pxmitframe);
1172
1173 if (psta->sleepq_len == 0) {
1174 pstapriv->tim_bitmap &= ~BIT(psta->aid);
1175
1176 /* DBG_871X("after handling ps-poll, tim =%x\n", pstapriv->tim_bitmap); */
1177
1178 /* update BCN for TIM IE */
1179 /* update_BCNTIM(padapter); */
1180 update_beacon(padapter, _TIM_IE_, NULL, true);
1181 }
1182
1183 spin_unlock_bh(&psta->sleep_q.lock);
1184
1185 } else {
1186 spin_unlock_bh(&psta->sleep_q.lock);
1187
1188 /* DBG_871X("no buffered packets to xmit\n"); */
1189 if (pstapriv->tim_bitmap&BIT(psta->aid)) {
1190 if (psta->sleepq_len == 0) {
1191 DBG_871X("no buffered packets to xmit\n");
1192
1193 /* issue nulldata with More data bit = 0 to indicate we have no buffered packets */
1194 issue_nulldata_in_interrupt(padapter, psta->hwaddr);
1195 } else {
1196 DBG_871X("error!psta->sleepq_len =%d\n", psta->sleepq_len);
1197 psta->sleepq_len = 0;
1198 }
1199
1200 pstapriv->tim_bitmap &= ~BIT(psta->aid);
1201
1202 /* update BCN for TIM IE */
1203 /* update_BCNTIM(padapter); */
1204 update_beacon(padapter, _TIM_IE_, NULL, true);
1205 }
1206 }
1207 }
1208 }
1209
1210 return _FAIL;
1211
1212 }
1213
1214 union recv_frame *recvframe_chk_defrag(struct adapter *padapter, union recv_frame *precv_frame);
1215 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)1216 sint validate_recv_mgnt_frame(struct adapter *padapter, union recv_frame *precv_frame)
1217 {
1218 /* struct mlme_priv *pmlmepriv = &adapter->mlmepriv; */
1219
1220 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("+validate_recv_mgnt_frame\n"));
1221
1222 precv_frame = recvframe_chk_defrag(padapter, precv_frame);
1223 if (!precv_frame) {
1224 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("%s: fragment packet\n", __func__));
1225 return _SUCCESS;
1226 }
1227
1228 {
1229 /* for rx pkt statistics */
1230 struct sta_info *psta = rtw_get_stainfo(&padapter->stapriv, GetAddr2Ptr(precv_frame->u.hdr.rx_data));
1231 if (psta) {
1232 psta->sta_stats.rx_mgnt_pkts++;
1233 if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_BEACON)
1234 psta->sta_stats.rx_beacon_pkts++;
1235 else if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_PROBEREQ)
1236 psta->sta_stats.rx_probereq_pkts++;
1237 else if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_PROBERSP) {
1238 if (!memcmp(padapter->eeprompriv.mac_addr, GetAddr1Ptr(precv_frame->u.hdr.rx_data), ETH_ALEN))
1239 psta->sta_stats.rx_probersp_pkts++;
1240 else if (is_broadcast_mac_addr(GetAddr1Ptr(precv_frame->u.hdr.rx_data))
1241 || is_multicast_mac_addr(GetAddr1Ptr(precv_frame->u.hdr.rx_data)))
1242 psta->sta_stats.rx_probersp_bm_pkts++;
1243 else
1244 psta->sta_stats.rx_probersp_uo_pkts++;
1245 }
1246 }
1247 }
1248
1249 mgt_dispatcher(padapter, precv_frame);
1250
1251 return _SUCCESS;
1252
1253 }
1254
1255 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)1256 sint validate_recv_data_frame(struct adapter *adapter, union recv_frame *precv_frame)
1257 {
1258 u8 bretry;
1259 u8 *psa, *pda, *pbssid;
1260 struct sta_info *psta = NULL;
1261 u8 *ptr = precv_frame->u.hdr.rx_data;
1262 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
1263 struct security_priv *psecuritypriv = &adapter->securitypriv;
1264 sint ret = _SUCCESS;
1265
1266 bretry = GetRetry(ptr);
1267 pda = get_da(ptr);
1268 psa = get_sa(ptr);
1269 pbssid = get_hdr_bssid(ptr);
1270
1271 if (!pbssid) {
1272 #ifdef DBG_RX_DROP_FRAME
1273 DBG_871X("DBG_RX_DROP_FRAME %s pbssid == NULL\n", __func__);
1274 #endif
1275 ret = _FAIL;
1276 goto exit;
1277 }
1278
1279 memcpy(pattrib->dst, pda, ETH_ALEN);
1280 memcpy(pattrib->src, psa, ETH_ALEN);
1281
1282 memcpy(pattrib->bssid, pbssid, ETH_ALEN);
1283
1284 switch (pattrib->to_fr_ds) {
1285 case 0:
1286 memcpy(pattrib->ra, pda, ETH_ALEN);
1287 memcpy(pattrib->ta, psa, ETH_ALEN);
1288 ret = sta2sta_data_frame(adapter, precv_frame, &psta);
1289 break;
1290
1291 case 1:
1292 memcpy(pattrib->ra, pda, ETH_ALEN);
1293 memcpy(pattrib->ta, pbssid, ETH_ALEN);
1294 ret = ap2sta_data_frame(adapter, precv_frame, &psta);
1295 break;
1296
1297 case 2:
1298 memcpy(pattrib->ra, pbssid, ETH_ALEN);
1299 memcpy(pattrib->ta, psa, ETH_ALEN);
1300 ret = sta2ap_data_frame(adapter, precv_frame, &psta);
1301 break;
1302
1303 case 3:
1304 memcpy(pattrib->ra, GetAddr1Ptr(ptr), ETH_ALEN);
1305 memcpy(pattrib->ta, GetAddr2Ptr(ptr), ETH_ALEN);
1306 ret = _FAIL;
1307 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" case 3\n"));
1308 break;
1309
1310 default:
1311 ret = _FAIL;
1312 break;
1313
1314 }
1315
1316 if (ret == _FAIL) {
1317 #ifdef DBG_RX_DROP_FRAME
1318 DBG_871X("DBG_RX_DROP_FRAME %s case:%d, res:%d\n", __func__, pattrib->to_fr_ds, ret);
1319 #endif
1320 goto exit;
1321 } else if (ret == RTW_RX_HANDLED) {
1322 goto exit;
1323 }
1324
1325
1326 if (!psta) {
1327 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" after to_fr_ds_chk; psta == NULL\n"));
1328 #ifdef DBG_RX_DROP_FRAME
1329 DBG_871X("DBG_RX_DROP_FRAME %s psta == NULL\n", __func__);
1330 #endif
1331 ret = _FAIL;
1332 goto exit;
1333 }
1334
1335 /* psta->rssi = prxcmd->rssi; */
1336 /* psta->signal_quality = prxcmd->sq; */
1337 precv_frame->u.hdr.psta = psta;
1338
1339
1340 pattrib->amsdu = 0;
1341 pattrib->ack_policy = 0;
1342 /* parsing QC field */
1343 if (pattrib->qos == 1) {
1344 pattrib->priority = GetPriority((ptr + 24));
1345 pattrib->ack_policy = GetAckpolicy((ptr + 24));
1346 pattrib->amsdu = GetAMsdu((ptr + 24));
1347 pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 32 : 26;
1348
1349 if (pattrib->priority != 0 && pattrib->priority != 3)
1350 adapter->recvpriv.bIsAnyNonBEPkts = true;
1351
1352 } else {
1353 pattrib->priority = 0;
1354 pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 30 : 24;
1355 }
1356
1357
1358 if (pattrib->order)/* HT-CTRL 11n */
1359 pattrib->hdrlen += 4;
1360
1361 precv_frame->u.hdr.preorder_ctrl = &psta->recvreorder_ctrl[pattrib->priority];
1362
1363 /* decache, drop duplicate recv packets */
1364 if (recv_decache(precv_frame, bretry, &psta->sta_recvpriv.rxcache) == _FAIL) {
1365 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("decache : drop pkt\n"));
1366 #ifdef DBG_RX_DROP_FRAME
1367 DBG_871X("DBG_RX_DROP_FRAME %s recv_decache return _FAIL\n", __func__);
1368 #endif
1369 ret = _FAIL;
1370 goto exit;
1371 }
1372
1373 if (pattrib->privacy) {
1374
1375 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("validate_recv_data_frame:pattrib->privacy =%x\n", pattrib->privacy));
1376 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)));
1377
1378 GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, IS_MCAST(pattrib->ra));
1379
1380 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n pattrib->encrypt =%d\n", pattrib->encrypt));
1381
1382 SET_ICE_IV_LEN(pattrib->iv_len, pattrib->icv_len, pattrib->encrypt);
1383 } else {
1384 pattrib->encrypt = 0;
1385 pattrib->iv_len = pattrib->icv_len = 0;
1386 }
1387
1388 exit:
1389 return ret;
1390 }
1391
validate_80211w_mgmt(struct adapter * adapter,union recv_frame * precv_frame)1392 static sint validate_80211w_mgmt(struct adapter *adapter, union recv_frame *precv_frame)
1393 {
1394 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
1395 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
1396 u8 *ptr = precv_frame->u.hdr.rx_data;
1397 u8 subtype;
1398
1399 subtype = GetFrameSubType(ptr); /* bit(7)~bit(2) */
1400
1401 /* only support station mode */
1402 if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) && check_fwstate(pmlmepriv, _FW_LINKED)
1403 && adapter->securitypriv.binstallBIPkey == true) {
1404 /* unicast management frame decrypt */
1405 if (pattrib->privacy && !(IS_MCAST(GetAddr1Ptr(ptr))) &&
1406 (subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC || subtype == WIFI_ACTION)) {
1407 u8 *mgmt_DATA;
1408 u32 data_len = 0;
1409
1410 pattrib->bdecrypted = 0;
1411 pattrib->encrypt = _AES_;
1412 pattrib->hdrlen = sizeof(struct ieee80211_hdr_3addr);
1413 /* set iv and icv length */
1414 SET_ICE_IV_LEN(pattrib->iv_len, pattrib->icv_len, pattrib->encrypt);
1415 memcpy(pattrib->ra, GetAddr1Ptr(ptr), ETH_ALEN);
1416 memcpy(pattrib->ta, GetAddr2Ptr(ptr), ETH_ALEN);
1417 /* actual management data frame body */
1418 data_len = pattrib->pkt_len - pattrib->hdrlen - pattrib->iv_len - pattrib->icv_len;
1419 mgmt_DATA = rtw_zmalloc(data_len);
1420 if (!mgmt_DATA) {
1421 DBG_871X("%s mgmt allocate fail !!!!!!!!!\n", __func__);
1422 goto validate_80211w_fail;
1423 }
1424 precv_frame = decryptor(adapter, precv_frame);
1425 /* save actual management data frame body */
1426 memcpy(mgmt_DATA, ptr+pattrib->hdrlen+pattrib->iv_len, data_len);
1427 /* overwrite the iv field */
1428 memcpy(ptr+pattrib->hdrlen, mgmt_DATA, data_len);
1429 /* remove the iv and icv length */
1430 pattrib->pkt_len = pattrib->pkt_len - pattrib->iv_len - pattrib->icv_len;
1431 kfree(mgmt_DATA);
1432 if (!precv_frame) {
1433 DBG_871X("%s mgmt descrypt fail !!!!!!!!!\n", __func__);
1434 goto validate_80211w_fail;
1435 }
1436 } else if (IS_MCAST(GetAddr1Ptr(ptr)) &&
1437 (subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC)) {
1438 sint BIP_ret = _SUCCESS;
1439 /* verify BIP MME IE of broadcast/multicast de-auth/disassoc packet */
1440 BIP_ret = rtw_BIP_verify(adapter, (u8 *)precv_frame);
1441 if (BIP_ret == _FAIL) {
1442 /* DBG_871X("802.11w BIP verify fail\n"); */
1443 goto validate_80211w_fail;
1444 } else if (BIP_ret == RTW_RX_HANDLED) {
1445 /* DBG_871X("802.11w recv none protected packet\n"); */
1446 /* issue sa query request */
1447 issue_action_SA_Query(adapter, NULL, 0, 0);
1448 goto validate_80211w_fail;
1449 }
1450 } else { /* 802.11w protect */
1451 if (subtype == WIFI_ACTION) {
1452 /* according 802.11-2012 standard, these five types are not robust types */
1453 if (ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_PUBLIC &&
1454 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_HT &&
1455 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_UNPROTECTED_WNM &&
1456 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_SELF_PROTECTED &&
1457 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_P2P) {
1458 DBG_871X("action frame category =%d should robust\n", ptr[WLAN_HDR_A3_LEN]);
1459 goto validate_80211w_fail;
1460 }
1461 } else if (subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC) {
1462 DBG_871X("802.11w recv none protected packet\n");
1463 /* issue sa query request */
1464 issue_action_SA_Query(adapter, NULL, 0, 0);
1465 goto validate_80211w_fail;
1466 }
1467 }
1468 }
1469 return _SUCCESS;
1470
1471 validate_80211w_fail:
1472 return _FAIL;
1473
1474 }
1475
dump_rx_packet(u8 * ptr)1476 static inline void dump_rx_packet(u8 *ptr)
1477 {
1478 int i;
1479
1480 DBG_871X("#############################\n");
1481 for (i = 0; i < 64; i = i+8)
1482 DBG_871X("%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:\n", *(ptr+i),
1483 *(ptr+i+1), *(ptr+i+2), *(ptr+i+3), *(ptr+i+4), *(ptr+i+5), *(ptr+i+6), *(ptr+i+7));
1484 DBG_871X("#############################\n");
1485 }
1486
1487 sint validate_recv_frame(struct adapter *adapter, union recv_frame *precv_frame);
validate_recv_frame(struct adapter * adapter,union recv_frame * precv_frame)1488 sint validate_recv_frame(struct adapter *adapter, union recv_frame *precv_frame)
1489 {
1490 /* shall check frame subtype, to / from ds, da, bssid */
1491
1492 /* then call check if rx seq/frag. duplicated. */
1493
1494 u8 type;
1495 u8 subtype;
1496 sint retval = _SUCCESS;
1497 u8 bDumpRxPkt;
1498
1499 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
1500
1501 u8 *ptr = precv_frame->u.hdr.rx_data;
1502 u8 ver = (unsigned char) (*ptr)&0x3;
1503
1504 /* add version chk */
1505 if (ver != 0) {
1506 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_data_frame fail! (ver!= 0)\n"));
1507 retval = _FAIL;
1508 DBG_COUNTER(adapter->rx_logs.core_rx_pre_ver_err);
1509 goto exit;
1510 }
1511
1512 type = GetFrameType(ptr);
1513 subtype = GetFrameSubType(ptr); /* bit(7)~bit(2) */
1514
1515 pattrib->to_fr_ds = get_tofr_ds(ptr);
1516
1517 pattrib->frag_num = GetFragNum(ptr);
1518 pattrib->seq_num = GetSequence(ptr);
1519
1520 pattrib->pw_save = GetPwrMgt(ptr);
1521 pattrib->mfrag = GetMFrag(ptr);
1522 pattrib->mdata = GetMData(ptr);
1523 pattrib->privacy = GetPrivacy(ptr);
1524 pattrib->order = GetOrder(ptr);
1525 rtw_hal_get_def_var(adapter, HAL_DEF_DBG_DUMP_RXPKT, &(bDumpRxPkt));
1526 if (bDumpRxPkt == 1) /* dump all rx packets */
1527 dump_rx_packet(ptr);
1528 else if ((bDumpRxPkt == 2) && (type == WIFI_MGT_TYPE))
1529 dump_rx_packet(ptr);
1530 else if ((bDumpRxPkt == 3) && (type == WIFI_DATA_TYPE))
1531 dump_rx_packet(ptr);
1532
1533 switch (type) {
1534 case WIFI_MGT_TYPE: /* mgnt */
1535 DBG_COUNTER(adapter->rx_logs.core_rx_pre_mgmt);
1536 if (validate_80211w_mgmt(adapter, precv_frame) == _FAIL) {
1537 retval = _FAIL;
1538 DBG_COUNTER(padapter->rx_logs.core_rx_pre_mgmt_err_80211w);
1539 break;
1540 }
1541
1542 retval = validate_recv_mgnt_frame(adapter, precv_frame);
1543 if (retval == _FAIL) {
1544 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_mgnt_frame fail\n"));
1545 DBG_COUNTER(adapter->rx_logs.core_rx_pre_mgmt_err);
1546 }
1547 retval = _FAIL; /* only data frame return _SUCCESS */
1548 break;
1549 case WIFI_CTRL_TYPE: /* ctrl */
1550 DBG_COUNTER(adapter->rx_logs.core_rx_pre_ctrl);
1551 retval = validate_recv_ctrl_frame(adapter, precv_frame);
1552 if (retval == _FAIL) {
1553 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_ctrl_frame fail\n"));
1554 DBG_COUNTER(adapter->rx_logs.core_rx_pre_ctrl_err);
1555 }
1556 retval = _FAIL; /* only data frame return _SUCCESS */
1557 break;
1558 case WIFI_DATA_TYPE: /* data */
1559 DBG_COUNTER(adapter->rx_logs.core_rx_pre_data);
1560
1561 pattrib->qos = (subtype & BIT(7)) ? 1:0;
1562 retval = validate_recv_data_frame(adapter, precv_frame);
1563 if (retval == _FAIL) {
1564 struct recv_priv *precvpriv = &adapter->recvpriv;
1565 /* RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_data_frame fail\n")); */
1566 precvpriv->rx_drop++;
1567 DBG_COUNTER(adapter->rx_logs.core_rx_pre_data_err);
1568 } else if (retval == _SUCCESS) {
1569 #ifdef DBG_RX_DUMP_EAP
1570 u8 bDumpRxPkt;
1571 u16 eth_type;
1572
1573 /* dump eapol */
1574 rtw_hal_get_def_var(adapter, HAL_DEF_DBG_DUMP_RXPKT, &(bDumpRxPkt));
1575 /* get ether_type */
1576 memcpy(ð_type, ptr + pattrib->hdrlen + pattrib->iv_len + LLC_HEADER_SIZE, 2);
1577 eth_type = ntohs((unsigned short) eth_type);
1578 if ((bDumpRxPkt == 4) && (eth_type == 0x888e))
1579 dump_rx_packet(ptr);
1580 #endif
1581 } else
1582 DBG_COUNTER(adapter->rx_logs.core_rx_pre_data_handled);
1583 break;
1584 default:
1585 DBG_COUNTER(adapter->rx_logs.core_rx_pre_unknown);
1586 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_data_frame fail! type = 0x%x\n", type));
1587 #ifdef DBG_RX_DROP_FRAME
1588 DBG_871X("DBG_RX_DROP_FRAME validate_recv_data_frame fail! type = 0x%x\n", type);
1589 #endif
1590 retval = _FAIL;
1591 break;
1592 }
1593
1594 exit:
1595 return retval;
1596 }
1597
1598
1599 /* remove the wlanhdr and add the eth_hdr */
1600 sint wlanhdr_to_ethhdr(union recv_frame *precvframe);
wlanhdr_to_ethhdr(union recv_frame * precvframe)1601 sint wlanhdr_to_ethhdr(union recv_frame *precvframe)
1602 {
1603 sint rmv_len;
1604 u16 eth_type, len;
1605 u8 bsnaphdr;
1606 u8 *psnap_type;
1607 struct ieee80211_snap_hdr *psnap;
1608 __be16 be_tmp;
1609 struct adapter *adapter = precvframe->u.hdr.adapter;
1610 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
1611 u8 *ptr = get_recvframe_data(precvframe) ; /* point to frame_ctrl field */
1612 struct rx_pkt_attrib *pattrib = &precvframe->u.hdr.attrib;
1613
1614 if (pattrib->encrypt) {
1615 recvframe_pull_tail(precvframe, pattrib->icv_len);
1616 }
1617
1618 psnap = (struct ieee80211_snap_hdr *)(ptr+pattrib->hdrlen + pattrib->iv_len);
1619 psnap_type = ptr+pattrib->hdrlen + pattrib->iv_len+SNAP_SIZE;
1620 /* convert hdr + possible LLC headers into Ethernet header */
1621 /* eth_type = (psnap_type[0] << 8) | psnap_type[1]; */
1622 if ((!memcmp(psnap, rfc1042_header, SNAP_SIZE) &&
1623 (memcmp(psnap_type, SNAP_ETH_TYPE_IPX, 2)) &&
1624 (memcmp(psnap_type, SNAP_ETH_TYPE_APPLETALK_AARP, 2))) ||
1625 /* eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) || */
1626 !memcmp(psnap, bridge_tunnel_header, SNAP_SIZE)) {
1627 /* remove RFC1042 or Bridge-Tunnel encapsulation and replace EtherType */
1628 bsnaphdr = true;
1629 } else
1630 /* Leave Ethernet header part of hdr and full payload */
1631 bsnaphdr = false;
1632
1633 rmv_len = pattrib->hdrlen + pattrib->iv_len + (bsnaphdr?SNAP_SIZE:0);
1634 len = precvframe->u.hdr.len - rmv_len;
1635
1636 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n ===pattrib->hdrlen: %x, pattrib->iv_len:%x ===\n\n", pattrib->hdrlen, pattrib->iv_len));
1637
1638 memcpy(&be_tmp, ptr+rmv_len, 2);
1639 eth_type = ntohs(be_tmp); /* pattrib->ether_type */
1640 pattrib->eth_type = eth_type;
1641
1642 #ifdef CONFIG_AUTO_AP_MODE
1643 if (0x8899 == pattrib->eth_type) {
1644 struct sta_info *psta = precvframe->u.hdr.psta;
1645
1646 DBG_871X("wlan rx: got eth_type = 0x%x\n", pattrib->eth_type);
1647
1648 if (psta && psta->isrc && psta->pid > 0) {
1649 u16 rx_pid;
1650
1651 rx_pid = *(u16 *)(ptr+rmv_len+2);
1652
1653 DBG_871X("wlan rx(pid = 0x%x): sta("MAC_FMT") pid = 0x%x\n",
1654 rx_pid, MAC_ARG(psta->hwaddr), psta->pid);
1655
1656 if (rx_pid == psta->pid) {
1657 int i;
1658 u16 len = *(u16 *)(ptr+rmv_len+4);
1659 /* u16 ctrl_type = *(u16*)(ptr+rmv_len+6); */
1660
1661 /* DBG_871X("RC: len = 0x%x, ctrl_type = 0x%x\n", len, ctrl_type); */
1662 DBG_871X("RC: len = 0x%x\n", len);
1663
1664 for (i = 0; i < len ; i++)
1665 DBG_871X("0x%x\n", *(ptr+rmv_len+6+i));
1666 /* DBG_871X("0x%x\n", *(ptr+rmv_len+8+i)); */
1667
1668 DBG_871X("RC-end\n");
1669 }
1670 }
1671 }
1672 #endif /* CONFIG_AUTO_AP_MODE */
1673
1674 if ((check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)) {
1675 ptr += rmv_len;
1676 *ptr = 0x87;
1677 *(ptr+1) = 0x12;
1678
1679 eth_type = 0x8712;
1680 /* append rx status for mp test packets */
1681 ptr = recvframe_pull(precvframe, (rmv_len-sizeof(struct ethhdr)+2)-24);
1682 memcpy(ptr, get_rxmem(precvframe), 24);
1683 ptr += 24;
1684 } else
1685 ptr = recvframe_pull(precvframe, (rmv_len-sizeof(struct ethhdr) + (bsnaphdr?2:0)));
1686
1687 memcpy(ptr, pattrib->dst, ETH_ALEN);
1688 memcpy(ptr+ETH_ALEN, pattrib->src, ETH_ALEN);
1689
1690 if (!bsnaphdr) {
1691 be_tmp = htons(len);
1692 memcpy(ptr+12, &be_tmp, 2);
1693 }
1694
1695 return _SUCCESS;
1696 }
1697
1698 /* perform defrag */
recvframe_defrag(struct adapter * adapter,struct __queue * defrag_q)1699 static union recv_frame *recvframe_defrag(struct adapter *adapter,
1700 struct __queue *defrag_q)
1701 {
1702 struct list_head *plist, *phead;
1703 u8 wlanhdr_offset;
1704 u8 curfragnum;
1705 struct recv_frame_hdr *pfhdr, *pnfhdr;
1706 union recv_frame *prframe, *pnextrframe;
1707 struct __queue *pfree_recv_queue;
1708
1709 curfragnum = 0;
1710 pfree_recv_queue = &adapter->recvpriv.free_recv_queue;
1711
1712 phead = get_list_head(defrag_q);
1713 plist = get_next(phead);
1714 prframe = (union recv_frame *)plist;
1715 pfhdr = &prframe->u.hdr;
1716 list_del_init(&(prframe->u.list));
1717
1718 if (curfragnum != pfhdr->attrib.frag_num) {
1719 /* the first fragment number must be 0 */
1720 /* free the whole queue */
1721 rtw_free_recvframe(prframe, pfree_recv_queue);
1722 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
1723
1724 return NULL;
1725 }
1726
1727 curfragnum++;
1728
1729 plist = get_list_head(defrag_q);
1730
1731 plist = get_next(plist);
1732
1733 while (phead != plist) {
1734 pnextrframe = (union recv_frame *)plist;
1735 pnfhdr = &pnextrframe->u.hdr;
1736
1737
1738 /* check the fragment sequence (2nd ~n fragment frame) */
1739
1740 if (curfragnum != pnfhdr->attrib.frag_num) {
1741 /* the fragment number must be increasing (after decache) */
1742 /* release the defrag_q & prframe */
1743 rtw_free_recvframe(prframe, pfree_recv_queue);
1744 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
1745 return NULL;
1746 }
1747
1748 curfragnum++;
1749
1750 /* copy the 2nd~n fragment frame's payload to the first fragment */
1751 /* get the 2nd~last fragment frame's payload */
1752
1753 wlanhdr_offset = pnfhdr->attrib.hdrlen + pnfhdr->attrib.iv_len;
1754
1755 recvframe_pull(pnextrframe, wlanhdr_offset);
1756
1757 /* append to first fragment frame's tail (if privacy frame, pull the ICV) */
1758 recvframe_pull_tail(prframe, pfhdr->attrib.icv_len);
1759
1760 /* memcpy */
1761 memcpy(pfhdr->rx_tail, pnfhdr->rx_data, pnfhdr->len);
1762
1763 recvframe_put(prframe, pnfhdr->len);
1764
1765 pfhdr->attrib.icv_len = pnfhdr->attrib.icv_len;
1766 plist = get_next(plist);
1767
1768 }
1769
1770 /* free the defrag_q queue and return the prframe */
1771 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
1772
1773 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("Performance defrag!!!!!\n"));
1774
1775 return prframe;
1776 }
1777
1778 /* check if need to defrag, if needed queue the frame to defrag_q */
recvframe_chk_defrag(struct adapter * padapter,union recv_frame * precv_frame)1779 union recv_frame *recvframe_chk_defrag(struct adapter *padapter, union recv_frame *precv_frame)
1780 {
1781 u8 ismfrag;
1782 u8 fragnum;
1783 u8 *psta_addr;
1784 struct recv_frame_hdr *pfhdr;
1785 struct sta_info *psta;
1786 struct sta_priv *pstapriv;
1787 struct list_head *phead;
1788 union recv_frame *prtnframe = NULL;
1789 struct __queue *pfree_recv_queue, *pdefrag_q;
1790
1791 pstapriv = &padapter->stapriv;
1792
1793 pfhdr = &precv_frame->u.hdr;
1794
1795 pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
1796
1797 /* need to define struct of wlan header frame ctrl */
1798 ismfrag = pfhdr->attrib.mfrag;
1799 fragnum = pfhdr->attrib.frag_num;
1800
1801 psta_addr = pfhdr->attrib.ta;
1802 psta = rtw_get_stainfo(pstapriv, psta_addr);
1803 if (!psta) {
1804 u8 type = GetFrameType(pfhdr->rx_data);
1805 if (type != WIFI_DATA_TYPE) {
1806 psta = rtw_get_bcmc_stainfo(padapter);
1807 pdefrag_q = &psta->sta_recvpriv.defrag_q;
1808 } else
1809 pdefrag_q = NULL;
1810 } else
1811 pdefrag_q = &psta->sta_recvpriv.defrag_q;
1812
1813 if ((ismfrag == 0) && (fragnum == 0))
1814 prtnframe = precv_frame;/* isn't a fragment frame */
1815
1816 if (ismfrag == 1) {
1817 /* 0~(n-1) fragment frame */
1818 /* enqueue to defraf_g */
1819 if (pdefrag_q) {
1820 if (fragnum == 0)
1821 /* the first fragment */
1822 if (!list_empty(&pdefrag_q->queue))
1823 /* free current defrag_q */
1824 rtw_free_recvframe_queue(pdefrag_q, pfree_recv_queue);
1825
1826
1827 /* Then enqueue the 0~(n-1) fragment into the defrag_q */
1828
1829 /* spin_lock(&pdefrag_q->lock); */
1830 phead = get_list_head(pdefrag_q);
1831 list_add_tail(&pfhdr->list, phead);
1832 /* spin_unlock(&pdefrag_q->lock); */
1833
1834 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("Enqueuq: ismfrag = %d, fragnum = %d\n", ismfrag, fragnum));
1835
1836 prtnframe = NULL;
1837
1838 } else {
1839 /* can't find this ta's defrag_queue, so free this recv_frame */
1840 rtw_free_recvframe(precv_frame, pfree_recv_queue);
1841 prtnframe = NULL;
1842 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("Free because pdefrag_q == NULL: ismfrag = %d, fragnum = %d\n", ismfrag, fragnum));
1843 }
1844
1845 }
1846
1847 if ((ismfrag == 0) && (fragnum != 0)) {
1848 /* the last fragment frame */
1849 /* enqueue the last fragment */
1850 if (pdefrag_q) {
1851 /* spin_lock(&pdefrag_q->lock); */
1852 phead = get_list_head(pdefrag_q);
1853 list_add_tail(&pfhdr->list, phead);
1854 /* spin_unlock(&pdefrag_q->lock); */
1855
1856 /* call recvframe_defrag to defrag */
1857 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("defrag: ismfrag = %d, fragnum = %d\n", ismfrag, fragnum));
1858 precv_frame = recvframe_defrag(padapter, pdefrag_q);
1859 prtnframe = precv_frame;
1860
1861 } else {
1862 /* can't find this ta's defrag_queue, so free this recv_frame */
1863 rtw_free_recvframe(precv_frame, pfree_recv_queue);
1864 prtnframe = NULL;
1865 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("Free because pdefrag_q == NULL: ismfrag = %d, fragnum = %d\n", ismfrag, fragnum));
1866 }
1867
1868 }
1869
1870
1871 if ((prtnframe) && (prtnframe->u.hdr.attrib.privacy)) {
1872 /* after defrag we must check tkip mic code */
1873 if (recvframe_chkmic(padapter, prtnframe) == _FAIL) {
1874 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvframe_chkmic(padapter, prtnframe) == _FAIL\n"));
1875 rtw_free_recvframe(prtnframe, pfree_recv_queue);
1876 prtnframe = NULL;
1877 }
1878 }
1879 return prtnframe;
1880 }
1881
amsdu_to_msdu(struct adapter * padapter,union recv_frame * prframe)1882 static int amsdu_to_msdu(struct adapter *padapter, union recv_frame *prframe)
1883 {
1884 int a_len, padding_len;
1885 u16 nSubframe_Length;
1886 u8 nr_subframes, i;
1887 u8 *pdata;
1888 _pkt *sub_pkt, *subframes[MAX_SUBFRAME_COUNT];
1889 struct recv_priv *precvpriv = &padapter->recvpriv;
1890 struct __queue *pfree_recv_queue = &(precvpriv->free_recv_queue);
1891
1892 nr_subframes = 0;
1893
1894 recvframe_pull(prframe, prframe->u.hdr.attrib.hdrlen);
1895
1896 if (prframe->u.hdr.attrib.iv_len > 0)
1897 recvframe_pull(prframe, prframe->u.hdr.attrib.iv_len);
1898
1899 a_len = prframe->u.hdr.len;
1900
1901 pdata = prframe->u.hdr.rx_data;
1902
1903 while (a_len > ETH_HLEN) {
1904
1905 /* Offset 12 denote 2 mac address */
1906 nSubframe_Length = get_unaligned_be16(pdata + 12);
1907
1908 if (a_len < (ETHERNET_HEADER_SIZE + nSubframe_Length)) {
1909 DBG_871X("nRemain_Length is %d and nSubframe_Length is : %d\n", a_len, nSubframe_Length);
1910 break;
1911 }
1912
1913 sub_pkt = rtw_os_alloc_msdu_pkt(prframe, nSubframe_Length, pdata);
1914 if (!sub_pkt) {
1915 DBG_871X("%s(): allocate sub packet fail !!!\n", __func__);
1916 break;
1917 }
1918
1919 /* move the data point to data content */
1920 pdata += ETH_HLEN;
1921 a_len -= ETH_HLEN;
1922
1923 subframes[nr_subframes++] = sub_pkt;
1924
1925 if (nr_subframes >= MAX_SUBFRAME_COUNT) {
1926 DBG_871X("ParseSubframe(): Too many Subframes! Packets dropped!\n");
1927 break;
1928 }
1929
1930 pdata += nSubframe_Length;
1931 a_len -= nSubframe_Length;
1932 if (a_len != 0) {
1933 padding_len = 4 - ((nSubframe_Length + ETH_HLEN) & (4-1));
1934 if (padding_len == 4) {
1935 padding_len = 0;
1936 }
1937
1938 if (a_len < padding_len) {
1939 DBG_871X("ParseSubframe(): a_len < padding_len !\n");
1940 break;
1941 }
1942 pdata += padding_len;
1943 a_len -= padding_len;
1944 }
1945 }
1946
1947 for (i = 0; i < nr_subframes; i++) {
1948 sub_pkt = subframes[i];
1949
1950 /* Indicate the packets to upper layer */
1951 if (sub_pkt) {
1952 rtw_os_recv_indicate_pkt(padapter, sub_pkt, &prframe->u.hdr.attrib);
1953 }
1954 }
1955
1956 prframe->u.hdr.len = 0;
1957 rtw_free_recvframe(prframe, pfree_recv_queue);/* free this recv_frame */
1958
1959 return _SUCCESS;
1960 }
1961
1962 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)1963 int check_indicate_seq(struct recv_reorder_ctrl *preorder_ctrl, u16 seq_num)
1964 {
1965 struct adapter *padapter = preorder_ctrl->padapter;
1966 struct dvobj_priv *psdpriv = padapter->dvobj;
1967 struct debug_priv *pdbgpriv = &psdpriv->drv_dbg;
1968 u8 wsize = preorder_ctrl->wsize_b;
1969 u16 wend = (preorder_ctrl->indicate_seq + wsize - 1) & 0xFFF;/* 4096; */
1970
1971 /* Rx Reorder initialize condition. */
1972 if (preorder_ctrl->indicate_seq == 0xFFFF) {
1973 preorder_ctrl->indicate_seq = seq_num;
1974 #ifdef DBG_RX_SEQ
1975 DBG_871X("DBG_RX_SEQ %s:%d init IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
1976 preorder_ctrl->indicate_seq, seq_num);
1977 #endif
1978
1979 /* DbgPrint("check_indicate_seq, 1st->indicate_seq =%d\n", precvpriv->indicate_seq); */
1980 }
1981
1982 /* DbgPrint("enter->check_indicate_seq(): IndicateSeq: %d, NewSeq: %d\n", precvpriv->indicate_seq, seq_num); */
1983
1984 /* Drop out the packet which SeqNum is smaller than WinStart */
1985 if (SN_LESS(seq_num, preorder_ctrl->indicate_seq)) {
1986 /* RT_TRACE(COMP_RX_REORDER, DBG_LOUD, ("CheckRxTsIndicateSeq(): Packet Drop! IndicateSeq: %d, NewSeq: %d\n", pTS->RxIndicateSeq, NewSeqNum)); */
1987 /* DbgPrint("CheckRxTsIndicateSeq(): Packet Drop! IndicateSeq: %d, NewSeq: %d\n", precvpriv->indicate_seq, seq_num); */
1988
1989 #ifdef DBG_RX_DROP_FRAME
1990 DBG_871X("%s IndicateSeq: %d > NewSeq: %d\n", __func__,
1991 preorder_ctrl->indicate_seq, seq_num);
1992 #endif
1993
1994
1995 return false;
1996 }
1997
1998 /* */
1999 /* Sliding window manipulation. Conditions includes: */
2000 /* 1. Incoming SeqNum is equal to WinStart =>Window shift 1 */
2001 /* 2. Incoming SeqNum is larger than the WinEnd => Window shift N */
2002 /* */
2003 if (SN_EQUAL(seq_num, preorder_ctrl->indicate_seq)) {
2004 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF;
2005
2006 #ifdef DBG_RX_SEQ
2007 DBG_871X("DBG_RX_SEQ %s:%d SN_EQUAL IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
2008 preorder_ctrl->indicate_seq, seq_num);
2009 #endif
2010 } else if (SN_LESS(wend, seq_num)) {
2011 /* RT_TRACE(COMP_RX_REORDER, DBG_LOUD, ("CheckRxTsIndicateSeq(): Window Shift! IndicateSeq: %d, NewSeq: %d\n", pTS->RxIndicateSeq, NewSeqNum)); */
2012 /* DbgPrint("CheckRxTsIndicateSeq(): Window Shift! IndicateSeq: %d, NewSeq: %d\n", precvpriv->indicate_seq, seq_num); */
2013
2014 /* boundary situation, when seq_num cross 0xFFF */
2015 if (seq_num >= (wsize - 1))
2016 preorder_ctrl->indicate_seq = seq_num + 1 - wsize;
2017 else
2018 preorder_ctrl->indicate_seq = 0xFFF - (wsize - (seq_num + 1)) + 1;
2019 pdbgpriv->dbg_rx_ampdu_window_shift_cnt++;
2020 #ifdef DBG_RX_SEQ
2021 DBG_871X("DBG_RX_SEQ %s:%d SN_LESS(wend, seq_num) IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
2022 preorder_ctrl->indicate_seq, seq_num);
2023 #endif
2024 }
2025
2026 /* DbgPrint("exit->check_indicate_seq(): IndicateSeq: %d, NewSeq: %d\n", precvpriv->indicate_seq, seq_num); */
2027
2028 return true;
2029 }
2030
2031 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)2032 int enqueue_reorder_recvframe(struct recv_reorder_ctrl *preorder_ctrl, union recv_frame *prframe)
2033 {
2034 struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib;
2035 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
2036 struct list_head *phead, *plist;
2037 union recv_frame *pnextrframe;
2038 struct rx_pkt_attrib *pnextattrib;
2039
2040 /* DbgPrint("+enqueue_reorder_recvframe()\n"); */
2041
2042 /* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */
2043 /* spin_lock(&ppending_recvframe_queue->lock); */
2044
2045
2046 phead = get_list_head(ppending_recvframe_queue);
2047 plist = get_next(phead);
2048
2049 while (phead != plist) {
2050 pnextrframe = (union recv_frame *)plist;
2051 pnextattrib = &pnextrframe->u.hdr.attrib;
2052
2053 if (SN_LESS(pnextattrib->seq_num, pattrib->seq_num))
2054 plist = get_next(plist);
2055 else if (SN_EQUAL(pnextattrib->seq_num, pattrib->seq_num))
2056 /* Duplicate entry is found!! Do not insert current entry. */
2057 /* RT_TRACE(COMP_RX_REORDER, DBG_TRACE, ("InsertRxReorderList(): Duplicate packet is dropped!! IndicateSeq: %d, NewSeq: %d\n", pTS->RxIndicateSeq, SeqNum)); */
2058 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
2059 return false;
2060 else
2061 break;
2062
2063 /* DbgPrint("enqueue_reorder_recvframe():while\n"); */
2064
2065 }
2066
2067
2068 /* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */
2069 /* spin_lock(&ppending_recvframe_queue->lock); */
2070
2071 list_del_init(&(prframe->u.hdr.list));
2072
2073 list_add_tail(&(prframe->u.hdr.list), plist);
2074
2075 /* spin_unlock(&ppending_recvframe_queue->lock); */
2076 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
2077
2078
2079 /* RT_TRACE(COMP_RX_REORDER, DBG_TRACE, ("InsertRxReorderList(): Pkt insert into buffer!! IndicateSeq: %d, NewSeq: %d\n", pTS->RxIndicateSeq, SeqNum)); */
2080 return true;
2081
2082 }
2083
2084 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)2085 void recv_indicatepkts_pkt_loss_cnt(struct debug_priv *pdbgpriv, u64 prev_seq, u64 current_seq)
2086 {
2087 if (current_seq < prev_seq)
2088 pdbgpriv->dbg_rx_ampdu_loss_count += (4096 + current_seq - prev_seq);
2089 else
2090 pdbgpriv->dbg_rx_ampdu_loss_count += (current_seq - prev_seq);
2091
2092 }
2093 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)2094 int recv_indicatepkts_in_order(struct adapter *padapter, struct recv_reorder_ctrl *preorder_ctrl, int bforced)
2095 {
2096 struct list_head *phead, *plist;
2097 union recv_frame *prframe;
2098 struct rx_pkt_attrib *pattrib;
2099 /* u8 index = 0; */
2100 int bPktInBuf = false;
2101 struct recv_priv *precvpriv = &padapter->recvpriv;
2102 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
2103 struct dvobj_priv *psdpriv = padapter->dvobj;
2104 struct debug_priv *pdbgpriv = &psdpriv->drv_dbg;
2105
2106 DBG_COUNTER(padapter->rx_logs.core_rx_post_indicate_in_oder);
2107
2108 /* DbgPrint("+recv_indicatepkts_in_order\n"); */
2109
2110 /* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */
2111 /* spin_lock(&ppending_recvframe_queue->lock); */
2112
2113 phead = get_list_head(ppending_recvframe_queue);
2114 plist = get_next(phead);
2115
2116 /* Handling some condition for forced indicate case. */
2117 if (bforced == true) {
2118 pdbgpriv->dbg_rx_ampdu_forced_indicate_count++;
2119 if (list_empty(phead)) {
2120 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
2121 /* spin_unlock(&ppending_recvframe_queue->lock); */
2122 return true;
2123 }
2124
2125 prframe = (union recv_frame *)plist;
2126 pattrib = &prframe->u.hdr.attrib;
2127
2128 #ifdef DBG_RX_SEQ
2129 DBG_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
2130 preorder_ctrl->indicate_seq, pattrib->seq_num);
2131 #endif
2132 recv_indicatepkts_pkt_loss_cnt(pdbgpriv, preorder_ctrl->indicate_seq, pattrib->seq_num);
2133 preorder_ctrl->indicate_seq = pattrib->seq_num;
2134
2135 }
2136
2137 /* Prepare indication list and indication. */
2138 /* Check if there is any packet need indicate. */
2139 while (!list_empty(phead)) {
2140
2141 prframe = (union recv_frame *)plist;
2142 pattrib = &prframe->u.hdr.attrib;
2143
2144 if (!SN_LESS(preorder_ctrl->indicate_seq, pattrib->seq_num)) {
2145 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
2146 ("recv_indicatepkts_in_order: indicate =%d seq =%d amsdu =%d\n",
2147 preorder_ctrl->indicate_seq, pattrib->seq_num, pattrib->amsdu));
2148
2149 plist = get_next(plist);
2150 list_del_init(&(prframe->u.hdr.list));
2151
2152 if (SN_EQUAL(preorder_ctrl->indicate_seq, pattrib->seq_num)) {
2153 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF;
2154 #ifdef DBG_RX_SEQ
2155 DBG_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
2156 preorder_ctrl->indicate_seq, pattrib->seq_num);
2157 #endif
2158 }
2159
2160 /* Set this as a lock to make sure that only one thread is indicating packet. */
2161 /* pTS->RxIndicateState = RXTS_INDICATE_PROCESSING; */
2162
2163 /* Indicate packets */
2164 /* RT_ASSERT((index<=REORDER_WIN_SIZE), ("RxReorderIndicatePacket(): Rx Reorder buffer full!!\n")); */
2165
2166
2167 /* indicate this recv_frame */
2168 /* DbgPrint("recv_indicatepkts_in_order, indicate_seq =%d, seq_num =%d\n", precvpriv->indicate_seq, pattrib->seq_num); */
2169 if (!pattrib->amsdu) {
2170 /* DBG_871X("recv_indicatepkts_in_order, amsdu!= 1, indicate_seq =%d, seq_num =%d\n", preorder_ctrl->indicate_seq, pattrib->seq_num); */
2171
2172 if ((padapter->bDriverStopped == false) &&
2173 (padapter->bSurpriseRemoved == false))
2174 rtw_recv_indicatepkt(padapter, prframe);/* indicate this recv_frame */
2175
2176 } else if (pattrib->amsdu == 1) {
2177 if (amsdu_to_msdu(padapter, prframe) != _SUCCESS)
2178 rtw_free_recvframe(prframe, &precvpriv->free_recv_queue);
2179
2180 } else {
2181 /* error condition; */
2182 }
2183
2184
2185 /* Update local variables. */
2186 bPktInBuf = false;
2187
2188 } else {
2189 bPktInBuf = true;
2190 break;
2191 }
2192
2193 /* DbgPrint("recv_indicatepkts_in_order():while\n"); */
2194
2195 }
2196
2197 /* spin_unlock(&ppending_recvframe_queue->lock); */
2198 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
2199
2200 return bPktInBuf;
2201 }
2202
2203 int recv_indicatepkt_reorder(struct adapter *padapter, union recv_frame *prframe);
recv_indicatepkt_reorder(struct adapter * padapter,union recv_frame * prframe)2204 int recv_indicatepkt_reorder(struct adapter *padapter, union recv_frame *prframe)
2205 {
2206 int retval = _SUCCESS;
2207 struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib;
2208 struct recv_reorder_ctrl *preorder_ctrl = prframe->u.hdr.preorder_ctrl;
2209 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
2210 struct dvobj_priv *psdpriv = padapter->dvobj;
2211 struct debug_priv *pdbgpriv = &psdpriv->drv_dbg;
2212
2213 DBG_COUNTER(padapter->rx_logs.core_rx_post_indicate_reoder);
2214
2215 if (!pattrib->amsdu) {
2216 /* s1. */
2217 wlanhdr_to_ethhdr(prframe);
2218
2219 if (pattrib->qos != 1) {
2220 if ((padapter->bDriverStopped == false) &&
2221 (padapter->bSurpriseRemoved == false)) {
2222 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("@@@@ recv_indicatepkt_reorder -recv_func recv_indicatepkt\n"));
2223
2224 rtw_recv_indicatepkt(padapter, prframe);
2225 return _SUCCESS;
2226
2227 }
2228
2229 #ifdef DBG_RX_DROP_FRAME
2230 DBG_871X("DBG_RX_DROP_FRAME %s pattrib->qos != 1\n", __func__);
2231 #endif
2232
2233 return _FAIL;
2234
2235 }
2236
2237 if (preorder_ctrl->enable == false) {
2238 /* indicate this recv_frame */
2239 preorder_ctrl->indicate_seq = pattrib->seq_num;
2240 #ifdef DBG_RX_SEQ
2241 DBG_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
2242 preorder_ctrl->indicate_seq, pattrib->seq_num);
2243 #endif
2244
2245 rtw_recv_indicatepkt(padapter, prframe);
2246
2247 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096;
2248 #ifdef DBG_RX_SEQ
2249 DBG_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
2250 preorder_ctrl->indicate_seq, pattrib->seq_num);
2251 #endif
2252
2253 return _SUCCESS;
2254 }
2255 } else if (pattrib->amsdu == 1) { /* temp filter -> means didn't support A-MSDUs in a A-MPDU */
2256 if (preorder_ctrl->enable == false) {
2257 preorder_ctrl->indicate_seq = pattrib->seq_num;
2258 #ifdef DBG_RX_SEQ
2259 DBG_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
2260 preorder_ctrl->indicate_seq, pattrib->seq_num);
2261 #endif
2262
2263 retval = amsdu_to_msdu(padapter, prframe);
2264
2265 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096;
2266 #ifdef DBG_RX_SEQ
2267 DBG_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
2268 preorder_ctrl->indicate_seq, pattrib->seq_num);
2269 #endif
2270
2271 if (retval != _SUCCESS) {
2272 #ifdef DBG_RX_DROP_FRAME
2273 DBG_871X("DBG_RX_DROP_FRAME %s amsdu_to_msdu fail\n", __func__);
2274 #endif
2275 }
2276
2277 return retval;
2278 }
2279 }
2280
2281 spin_lock_bh(&ppending_recvframe_queue->lock);
2282
2283 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
2284 ("recv_indicatepkt_reorder: indicate =%d seq =%d\n",
2285 preorder_ctrl->indicate_seq, pattrib->seq_num));
2286
2287 /* s2. check if winstart_b(indicate_seq) needs to been updated */
2288 if (!check_indicate_seq(preorder_ctrl, pattrib->seq_num)) {
2289 pdbgpriv->dbg_rx_ampdu_drop_count++;
2290 #ifdef DBG_RX_DROP_FRAME
2291 DBG_871X("DBG_RX_DROP_FRAME %s check_indicate_seq fail\n", __func__);
2292 #endif
2293 goto _err_exit;
2294 }
2295
2296
2297 /* s3. Insert all packet into Reorder Queue to maintain its ordering. */
2298 if (!enqueue_reorder_recvframe(preorder_ctrl, prframe)) {
2299 /* DbgPrint("recv_indicatepkt_reorder, enqueue_reorder_recvframe fail!\n"); */
2300 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
2301 /* return _FAIL; */
2302 #ifdef DBG_RX_DROP_FRAME
2303 DBG_871X("DBG_RX_DROP_FRAME %s enqueue_reorder_recvframe fail\n", __func__);
2304 #endif
2305 goto _err_exit;
2306 }
2307
2308
2309 /* s4. */
2310 /* Indication process. */
2311 /* After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets */
2312 /* with the SeqNum smaller than latest WinStart and buffer other packets. */
2313 /* */
2314 /* For Rx Reorder condition: */
2315 /* 1. All packets with SeqNum smaller than WinStart => Indicate */
2316 /* 2. All packets with SeqNum larger than or equal to WinStart => Buffer it. */
2317 /* */
2318
2319 /* recv_indicatepkts_in_order(padapter, preorder_ctrl, true); */
2320 if (recv_indicatepkts_in_order(padapter, preorder_ctrl, false) == true) {
2321 _set_timer(&preorder_ctrl->reordering_ctrl_timer, REORDER_WAIT_TIME);
2322 spin_unlock_bh(&ppending_recvframe_queue->lock);
2323 } else {
2324 spin_unlock_bh(&ppending_recvframe_queue->lock);
2325 del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
2326 }
2327
2328 return _SUCCESS;
2329
2330 _err_exit:
2331 spin_unlock_bh(&ppending_recvframe_queue->lock);
2332
2333 return _FAIL;
2334 }
2335
2336
rtw_reordering_ctrl_timeout_handler(struct timer_list * t)2337 void rtw_reordering_ctrl_timeout_handler(struct timer_list *t)
2338 {
2339 struct recv_reorder_ctrl *preorder_ctrl =
2340 from_timer(preorder_ctrl, t, reordering_ctrl_timer);
2341 struct adapter *padapter = preorder_ctrl->padapter;
2342 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
2343
2344
2345 if (padapter->bDriverStopped || padapter->bSurpriseRemoved)
2346 return;
2347
2348 /* DBG_871X("+rtw_reordering_ctrl_timeout_handler() =>\n"); */
2349
2350 spin_lock_bh(&ppending_recvframe_queue->lock);
2351
2352 if (recv_indicatepkts_in_order(padapter, preorder_ctrl, true) == true)
2353 _set_timer(&preorder_ctrl->reordering_ctrl_timer, REORDER_WAIT_TIME);
2354
2355 spin_unlock_bh(&ppending_recvframe_queue->lock);
2356
2357 }
2358
2359 int process_recv_indicatepkts(struct adapter *padapter, union recv_frame *prframe);
process_recv_indicatepkts(struct adapter * padapter,union recv_frame * prframe)2360 int process_recv_indicatepkts(struct adapter *padapter, union recv_frame *prframe)
2361 {
2362 int retval = _SUCCESS;
2363 /* struct recv_priv *precvpriv = &padapter->recvpriv; */
2364 /* struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib; */
2365 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
2366 struct ht_priv *phtpriv = &pmlmepriv->htpriv;
2367
2368 DBG_COUNTER(padapter->rx_logs.core_rx_post_indicate);
2369
2370 if (phtpriv->ht_option == true) { /* B/G/N Mode */
2371 /* prframe->u.hdr.preorder_ctrl = &precvpriv->recvreorder_ctrl[pattrib->priority]; */
2372
2373 if (recv_indicatepkt_reorder(padapter, prframe) != _SUCCESS) { /* including perform A-MPDU Rx Ordering Buffer Control */
2374 #ifdef DBG_RX_DROP_FRAME
2375 DBG_871X("DBG_RX_DROP_FRAME %s recv_indicatepkt_reorder error!\n", __func__);
2376 #endif
2377
2378 if ((padapter->bDriverStopped == false) &&
2379 (padapter->bSurpriseRemoved == false)) {
2380 retval = _FAIL;
2381 return retval;
2382 }
2383 }
2384 } else { /* B/G mode */
2385 retval = wlanhdr_to_ethhdr(prframe);
2386 if (retval != _SUCCESS) {
2387 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("wlanhdr_to_ethhdr: drop pkt\n"));
2388 #ifdef DBG_RX_DROP_FRAME
2389 DBG_871X("DBG_RX_DROP_FRAME %s wlanhdr_to_ethhdr error!\n", __func__);
2390 #endif
2391 return retval;
2392 }
2393
2394 if ((padapter->bDriverStopped == false) && (padapter->bSurpriseRemoved == false)) {
2395 /* indicate this recv_frame */
2396 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("@@@@ process_recv_indicatepkts- recv_func recv_indicatepkt\n"));
2397 rtw_recv_indicatepkt(padapter, prframe);
2398
2399
2400 } else {
2401 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("@@@@ process_recv_indicatepkts- recv_func free_indicatepkt\n"));
2402
2403 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("recv_func:bDriverStopped(%d) OR bSurpriseRemoved(%d)", padapter->bDriverStopped, padapter->bSurpriseRemoved));
2404 retval = _FAIL;
2405 return retval;
2406 }
2407
2408 }
2409
2410 return retval;
2411
2412 }
2413
recv_func_prehandle(struct adapter * padapter,union recv_frame * rframe)2414 static int recv_func_prehandle(struct adapter *padapter, union recv_frame *rframe)
2415 {
2416 int ret = _SUCCESS;
2417 struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
2418
2419 DBG_COUNTER(padapter->rx_logs.core_rx_pre);
2420
2421 /* check the frame crtl field and decache */
2422 ret = validate_recv_frame(padapter, rframe);
2423 if (ret != _SUCCESS) {
2424 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("recv_func: validate_recv_frame fail! drop pkt\n"));
2425 rtw_free_recvframe(rframe, pfree_recv_queue);/* free this recv_frame */
2426 goto exit;
2427 }
2428
2429 exit:
2430 return ret;
2431 }
2432
recv_func_posthandle(struct adapter * padapter,union recv_frame * prframe)2433 static int recv_func_posthandle(struct adapter *padapter, union recv_frame *prframe)
2434 {
2435 int ret = _SUCCESS;
2436 union recv_frame *orig_prframe = prframe;
2437 struct recv_priv *precvpriv = &padapter->recvpriv;
2438 struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
2439
2440 DBG_COUNTER(padapter->rx_logs.core_rx_post);
2441
2442 prframe = decryptor(padapter, prframe);
2443 if (!prframe) {
2444 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("decryptor: drop pkt\n"));
2445 #ifdef DBG_RX_DROP_FRAME
2446 DBG_871X("DBG_RX_DROP_FRAME %s decryptor: drop pkt\n", __func__);
2447 #endif
2448 ret = _FAIL;
2449 DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt_err);
2450 goto _recv_data_drop;
2451 }
2452
2453 prframe = recvframe_chk_defrag(padapter, prframe);
2454 if (!prframe) {
2455 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvframe_chk_defrag: drop pkt\n"));
2456 #ifdef DBG_RX_DROP_FRAME
2457 DBG_871X("DBG_RX_DROP_FRAME %s recvframe_chk_defrag: drop pkt\n", __func__);
2458 #endif
2459 DBG_COUNTER(padapter->rx_logs.core_rx_post_defrag_err);
2460 goto _recv_data_drop;
2461 }
2462
2463 prframe = portctrl(padapter, prframe);
2464 if (!prframe) {
2465 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("portctrl: drop pkt\n"));
2466 #ifdef DBG_RX_DROP_FRAME
2467 DBG_871X("DBG_RX_DROP_FRAME %s portctrl: drop pkt\n", __func__);
2468 #endif
2469 ret = _FAIL;
2470 DBG_COUNTER(padapter->rx_logs.core_rx_post_portctrl_err);
2471 goto _recv_data_drop;
2472 }
2473
2474 count_rx_stats(padapter, prframe, NULL);
2475
2476 ret = process_recv_indicatepkts(padapter, prframe);
2477 if (ret != _SUCCESS) {
2478 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recv_func: process_recv_indicatepkts fail!\n"));
2479 #ifdef DBG_RX_DROP_FRAME
2480 DBG_871X("DBG_RX_DROP_FRAME %s process_recv_indicatepkts fail!\n", __func__);
2481 #endif
2482 rtw_free_recvframe(orig_prframe, pfree_recv_queue);/* free this recv_frame */
2483 DBG_COUNTER(padapter->rx_logs.core_rx_post_indicate_err);
2484 goto _recv_data_drop;
2485 }
2486
2487 _recv_data_drop:
2488 precvpriv->rx_drop++;
2489 return ret;
2490 }
2491
2492
2493 int recv_func(struct adapter *padapter, union recv_frame *rframe);
recv_func(struct adapter * padapter,union recv_frame * rframe)2494 int recv_func(struct adapter *padapter, union recv_frame *rframe)
2495 {
2496 int ret;
2497 struct rx_pkt_attrib *prxattrib = &rframe->u.hdr.attrib;
2498 struct recv_priv *recvpriv = &padapter->recvpriv;
2499 struct security_priv *psecuritypriv = &padapter->securitypriv;
2500 struct mlme_priv *mlmepriv = &padapter->mlmepriv;
2501
2502 /* check if need to handle uc_swdec_pending_queue*/
2503 if (check_fwstate(mlmepriv, WIFI_STATION_STATE) && psecuritypriv->busetkipkey) {
2504 union recv_frame *pending_frame;
2505 int cnt = 0;
2506
2507 while ((pending_frame = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue))) {
2508 cnt++;
2509 DBG_COUNTER(padapter->rx_logs.core_rx_dequeue);
2510 recv_func_posthandle(padapter, pending_frame);
2511 }
2512
2513 if (cnt)
2514 DBG_871X(FUNC_ADPT_FMT" dequeue %d from uc_swdec_pending_queue\n",
2515 FUNC_ADPT_ARG(padapter), cnt);
2516 }
2517
2518 DBG_COUNTER(padapter->rx_logs.core_rx);
2519 ret = recv_func_prehandle(padapter, rframe);
2520
2521 if (ret == _SUCCESS) {
2522
2523 /* check if need to enqueue into uc_swdec_pending_queue*/
2524 if (check_fwstate(mlmepriv, WIFI_STATION_STATE) &&
2525 !IS_MCAST(prxattrib->ra) && prxattrib->encrypt > 0 &&
2526 (prxattrib->bdecrypted == 0 || psecuritypriv->sw_decrypt == true) &&
2527 psecuritypriv->ndisauthtype == Ndis802_11AuthModeWPAPSK &&
2528 !psecuritypriv->busetkipkey) {
2529 DBG_COUNTER(padapter->rx_logs.core_rx_enqueue);
2530 rtw_enqueue_recvframe(rframe, &padapter->recvpriv.uc_swdec_pending_queue);
2531 /* DBG_871X("%s: no key, enqueue uc_swdec_pending_queue\n", __func__); */
2532
2533 if (recvpriv->free_recvframe_cnt < NR_RECVFRAME/4) {
2534 /* to prevent from recvframe starvation, get recvframe from uc_swdec_pending_queue to free_recvframe_cnt */
2535 rframe = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue);
2536 if (rframe)
2537 goto do_posthandle;
2538 }
2539 goto exit;
2540 }
2541
2542 do_posthandle:
2543 ret = recv_func_posthandle(padapter, rframe);
2544 }
2545
2546 exit:
2547 return ret;
2548 }
2549
2550
rtw_recv_entry(union recv_frame * precvframe)2551 s32 rtw_recv_entry(union recv_frame *precvframe)
2552 {
2553 struct adapter *padapter;
2554 struct recv_priv *precvpriv;
2555 s32 ret = _SUCCESS;
2556
2557 /* RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("+rtw_recv_entry\n")); */
2558
2559 padapter = precvframe->u.hdr.adapter;
2560
2561 precvpriv = &padapter->recvpriv;
2562
2563 ret = recv_func(padapter, precvframe);
2564 if (ret == _FAIL) {
2565 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("rtw_recv_entry: recv_func return fail!!!\n"));
2566 goto _recv_entry_drop;
2567 }
2568
2569
2570 precvpriv->rx_pkts++;
2571
2572 return ret;
2573
2574 _recv_entry_drop:
2575
2576 /* RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("_recv_entry_drop\n")); */
2577
2578 return ret;
2579 }
2580
rtw_signal_stat_timer_hdl(struct timer_list * t)2581 static void rtw_signal_stat_timer_hdl(struct timer_list *t)
2582 {
2583 struct adapter *adapter =
2584 from_timer(adapter, t, recvpriv.signal_stat_timer);
2585 struct recv_priv *recvpriv = &adapter->recvpriv;
2586
2587 u32 tmp_s, tmp_q;
2588 u8 avg_signal_strength = 0;
2589 u8 avg_signal_qual = 0;
2590 u32 num_signal_strength = 0;
2591 u32 num_signal_qual = 0;
2592 u8 _alpha = 5; /* this value is based on converging_constant = 5000 and sampling_interval = 1000 */
2593
2594 if (adapter->recvpriv.is_signal_dbg) {
2595 /* update the user specific value, signal_strength_dbg, to signal_strength, rssi */
2596 adapter->recvpriv.signal_strength = adapter->recvpriv.signal_strength_dbg;
2597 adapter->recvpriv.rssi = (s8)translate_percentage_to_dbm((u8)adapter->recvpriv.signal_strength_dbg);
2598 } else {
2599
2600 if (recvpriv->signal_strength_data.update_req == 0) {/* update_req is clear, means we got rx */
2601 avg_signal_strength = recvpriv->signal_strength_data.avg_val;
2602 num_signal_strength = recvpriv->signal_strength_data.total_num;
2603 /* after avg_vals are acquired, we can re-stat the signal values */
2604 recvpriv->signal_strength_data.update_req = 1;
2605 }
2606
2607 if (recvpriv->signal_qual_data.update_req == 0) {/* update_req is clear, means we got rx */
2608 avg_signal_qual = recvpriv->signal_qual_data.avg_val;
2609 num_signal_qual = recvpriv->signal_qual_data.total_num;
2610 /* after avg_vals are acquired, we can re-stat the signal values */
2611 recvpriv->signal_qual_data.update_req = 1;
2612 }
2613
2614 if (num_signal_strength == 0) {
2615 if (rtw_get_on_cur_ch_time(adapter) == 0
2616 || jiffies_to_msecs(jiffies - rtw_get_on_cur_ch_time(adapter)) < 2 * adapter->mlmeextpriv.mlmext_info.bcn_interval
2617 ) {
2618 goto set_timer;
2619 }
2620 }
2621
2622 if (check_fwstate(&adapter->mlmepriv, _FW_UNDER_SURVEY) == true
2623 || check_fwstate(&adapter->mlmepriv, _FW_LINKED) == false
2624 ) {
2625 goto set_timer;
2626 }
2627
2628 /* update value of signal_strength, rssi, signal_qual */
2629 tmp_s = (avg_signal_strength+(_alpha-1)*recvpriv->signal_strength);
2630 if (tmp_s % _alpha)
2631 tmp_s = tmp_s/_alpha + 1;
2632 else
2633 tmp_s = tmp_s/_alpha;
2634 if (tmp_s > 100)
2635 tmp_s = 100;
2636
2637 tmp_q = (avg_signal_qual+(_alpha-1)*recvpriv->signal_qual);
2638 if (tmp_q % _alpha)
2639 tmp_q = tmp_q/_alpha + 1;
2640 else
2641 tmp_q = tmp_q/_alpha;
2642 if (tmp_q > 100)
2643 tmp_q = 100;
2644
2645 recvpriv->signal_strength = tmp_s;
2646 recvpriv->rssi = (s8)translate_percentage_to_dbm(tmp_s);
2647 recvpriv->signal_qual = tmp_q;
2648
2649 #if defined(DBG_RX_SIGNAL_DISPLAY_PROCESSING) && 1
2650 DBG_871X(FUNC_ADPT_FMT" signal_strength:%3u, rssi:%3d, signal_qual:%3u"
2651 ", num_signal_strength:%u, num_signal_qual:%u"
2652 ", on_cur_ch_ms:%d"
2653 "\n"
2654 , FUNC_ADPT_ARG(adapter)
2655 , recvpriv->signal_strength
2656 , recvpriv->rssi
2657 , recvpriv->signal_qual
2658 , num_signal_strength, num_signal_qual
2659 , rtw_get_on_cur_ch_time(adapter) ? jiffies_to_msecs(jiffies - rtw_get_on_cur_ch_time(adapter)) : 0
2660 );
2661 #endif
2662 }
2663
2664 set_timer:
2665 rtw_set_signal_stat_timer(recvpriv);
2666
2667 }
2668