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 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
1148
1149 /* spin_lock_bh(&psta->sleep_q.lock); */
1150 spin_lock_bh(&pxmitpriv->lock);
1151
1152 xmitframe_phead = get_list_head(&psta->sleep_q);
1153 xmitframe_plist = get_next(xmitframe_phead);
1154
1155 if (xmitframe_phead != xmitframe_plist) {
1156 pxmitframe = LIST_CONTAINOR(xmitframe_plist, struct xmit_frame, list);
1157
1158 xmitframe_plist = get_next(xmitframe_plist);
1159
1160 list_del_init(&pxmitframe->list);
1161
1162 psta->sleepq_len--;
1163
1164 if (psta->sleepq_len > 0)
1165 pxmitframe->attrib.mdata = 1;
1166 else
1167 pxmitframe->attrib.mdata = 0;
1168
1169 pxmitframe->attrib.triggered = 1;
1170
1171 /* DBG_871X("handling ps-poll, q_len =%d, tim =%x\n", psta->sleepq_len, pstapriv->tim_bitmap); */
1172
1173 rtw_hal_xmitframe_enqueue(padapter, pxmitframe);
1174
1175 if (psta->sleepq_len == 0) {
1176 pstapriv->tim_bitmap &= ~BIT(psta->aid);
1177
1178 /* DBG_871X("after handling ps-poll, tim =%x\n", pstapriv->tim_bitmap); */
1179
1180 /* update BCN for TIM IE */
1181 /* update_BCNTIM(padapter); */
1182 update_beacon(padapter, _TIM_IE_, NULL, true);
1183 }
1184
1185 /* spin_unlock_bh(&psta->sleep_q.lock); */
1186 spin_unlock_bh(&pxmitpriv->lock);
1187
1188 } else {
1189 /* spin_unlock_bh(&psta->sleep_q.lock); */
1190 spin_unlock_bh(&pxmitpriv->lock);
1191
1192 /* DBG_871X("no buffered packets to xmit\n"); */
1193 if (pstapriv->tim_bitmap&BIT(psta->aid)) {
1194 if (psta->sleepq_len == 0) {
1195 DBG_871X("no buffered packets to xmit\n");
1196
1197 /* issue nulldata with More data bit = 0 to indicate we have no buffered packets */
1198 issue_nulldata_in_interrupt(padapter, psta->hwaddr);
1199 } else {
1200 DBG_871X("error!psta->sleepq_len =%d\n", psta->sleepq_len);
1201 psta->sleepq_len = 0;
1202 }
1203
1204 pstapriv->tim_bitmap &= ~BIT(psta->aid);
1205
1206 /* update BCN for TIM IE */
1207 /* update_BCNTIM(padapter); */
1208 update_beacon(padapter, _TIM_IE_, NULL, true);
1209 }
1210 }
1211 }
1212 }
1213
1214 return _FAIL;
1215
1216 }
1217
1218 union recv_frame *recvframe_chk_defrag(struct adapter *padapter, union recv_frame *precv_frame);
1219 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)1220 sint validate_recv_mgnt_frame(struct adapter *padapter, union recv_frame *precv_frame)
1221 {
1222 /* struct mlme_priv *pmlmepriv = &adapter->mlmepriv; */
1223
1224 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("+validate_recv_mgnt_frame\n"));
1225
1226 precv_frame = recvframe_chk_defrag(padapter, precv_frame);
1227 if (!precv_frame) {
1228 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("%s: fragment packet\n", __func__));
1229 return _SUCCESS;
1230 }
1231
1232 {
1233 /* for rx pkt statistics */
1234 struct sta_info *psta = rtw_get_stainfo(&padapter->stapriv, GetAddr2Ptr(precv_frame->u.hdr.rx_data));
1235 if (psta) {
1236 psta->sta_stats.rx_mgnt_pkts++;
1237 if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_BEACON)
1238 psta->sta_stats.rx_beacon_pkts++;
1239 else if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_PROBEREQ)
1240 psta->sta_stats.rx_probereq_pkts++;
1241 else if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_PROBERSP) {
1242 if (!memcmp(padapter->eeprompriv.mac_addr, GetAddr1Ptr(precv_frame->u.hdr.rx_data), ETH_ALEN))
1243 psta->sta_stats.rx_probersp_pkts++;
1244 else if (is_broadcast_mac_addr(GetAddr1Ptr(precv_frame->u.hdr.rx_data))
1245 || is_multicast_mac_addr(GetAddr1Ptr(precv_frame->u.hdr.rx_data)))
1246 psta->sta_stats.rx_probersp_bm_pkts++;
1247 else
1248 psta->sta_stats.rx_probersp_uo_pkts++;
1249 }
1250 }
1251 }
1252
1253 mgt_dispatcher(padapter, precv_frame);
1254
1255 return _SUCCESS;
1256
1257 }
1258
1259 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)1260 sint validate_recv_data_frame(struct adapter *adapter, union recv_frame *precv_frame)
1261 {
1262 u8 bretry;
1263 u8 *psa, *pda, *pbssid;
1264 struct sta_info *psta = NULL;
1265 u8 *ptr = precv_frame->u.hdr.rx_data;
1266 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
1267 struct security_priv *psecuritypriv = &adapter->securitypriv;
1268 sint ret = _SUCCESS;
1269
1270 bretry = GetRetry(ptr);
1271 pda = get_da(ptr);
1272 psa = get_sa(ptr);
1273 pbssid = get_hdr_bssid(ptr);
1274
1275 if (!pbssid) {
1276 #ifdef DBG_RX_DROP_FRAME
1277 DBG_871X("DBG_RX_DROP_FRAME %s pbssid == NULL\n", __func__);
1278 #endif
1279 ret = _FAIL;
1280 goto exit;
1281 }
1282
1283 memcpy(pattrib->dst, pda, ETH_ALEN);
1284 memcpy(pattrib->src, psa, ETH_ALEN);
1285
1286 memcpy(pattrib->bssid, pbssid, ETH_ALEN);
1287
1288 switch (pattrib->to_fr_ds) {
1289 case 0:
1290 memcpy(pattrib->ra, pda, ETH_ALEN);
1291 memcpy(pattrib->ta, psa, ETH_ALEN);
1292 ret = sta2sta_data_frame(adapter, precv_frame, &psta);
1293 break;
1294
1295 case 1:
1296 memcpy(pattrib->ra, pda, ETH_ALEN);
1297 memcpy(pattrib->ta, pbssid, ETH_ALEN);
1298 ret = ap2sta_data_frame(adapter, precv_frame, &psta);
1299 break;
1300
1301 case 2:
1302 memcpy(pattrib->ra, pbssid, ETH_ALEN);
1303 memcpy(pattrib->ta, psa, ETH_ALEN);
1304 ret = sta2ap_data_frame(adapter, precv_frame, &psta);
1305 break;
1306
1307 case 3:
1308 memcpy(pattrib->ra, GetAddr1Ptr(ptr), ETH_ALEN);
1309 memcpy(pattrib->ta, GetAddr2Ptr(ptr), ETH_ALEN);
1310 ret = _FAIL;
1311 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" case 3\n"));
1312 break;
1313
1314 default:
1315 ret = _FAIL;
1316 break;
1317
1318 }
1319
1320 if (ret == _FAIL) {
1321 #ifdef DBG_RX_DROP_FRAME
1322 DBG_871X("DBG_RX_DROP_FRAME %s case:%d, res:%d\n", __func__, pattrib->to_fr_ds, ret);
1323 #endif
1324 goto exit;
1325 } else if (ret == RTW_RX_HANDLED) {
1326 goto exit;
1327 }
1328
1329
1330 if (!psta) {
1331 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" after to_fr_ds_chk; psta == NULL\n"));
1332 #ifdef DBG_RX_DROP_FRAME
1333 DBG_871X("DBG_RX_DROP_FRAME %s psta == NULL\n", __func__);
1334 #endif
1335 ret = _FAIL;
1336 goto exit;
1337 }
1338
1339 /* psta->rssi = prxcmd->rssi; */
1340 /* psta->signal_quality = prxcmd->sq; */
1341 precv_frame->u.hdr.psta = psta;
1342
1343
1344 pattrib->amsdu = 0;
1345 pattrib->ack_policy = 0;
1346 /* parsing QC field */
1347 if (pattrib->qos == 1) {
1348 pattrib->priority = GetPriority((ptr + 24));
1349 pattrib->ack_policy = GetAckpolicy((ptr + 24));
1350 pattrib->amsdu = GetAMsdu((ptr + 24));
1351 pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 32 : 26;
1352
1353 if (pattrib->priority != 0 && pattrib->priority != 3)
1354 adapter->recvpriv.bIsAnyNonBEPkts = true;
1355
1356 } else {
1357 pattrib->priority = 0;
1358 pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 30 : 24;
1359 }
1360
1361
1362 if (pattrib->order)/* HT-CTRL 11n */
1363 pattrib->hdrlen += 4;
1364
1365 precv_frame->u.hdr.preorder_ctrl = &psta->recvreorder_ctrl[pattrib->priority];
1366
1367 /* decache, drop duplicate recv packets */
1368 if (recv_decache(precv_frame, bretry, &psta->sta_recvpriv.rxcache) == _FAIL) {
1369 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("decache : drop pkt\n"));
1370 #ifdef DBG_RX_DROP_FRAME
1371 DBG_871X("DBG_RX_DROP_FRAME %s recv_decache return _FAIL\n", __func__);
1372 #endif
1373 ret = _FAIL;
1374 goto exit;
1375 }
1376
1377 if (pattrib->privacy) {
1378
1379 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("validate_recv_data_frame:pattrib->privacy =%x\n", pattrib->privacy));
1380 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)));
1381
1382 GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, IS_MCAST(pattrib->ra));
1383
1384 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n pattrib->encrypt =%d\n", pattrib->encrypt));
1385
1386 SET_ICE_IV_LEN(pattrib->iv_len, pattrib->icv_len, pattrib->encrypt);
1387 } else {
1388 pattrib->encrypt = 0;
1389 pattrib->iv_len = pattrib->icv_len = 0;
1390 }
1391
1392 exit:
1393 return ret;
1394 }
1395
validate_80211w_mgmt(struct adapter * adapter,union recv_frame * precv_frame)1396 static sint validate_80211w_mgmt(struct adapter *adapter, union recv_frame *precv_frame)
1397 {
1398 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
1399 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
1400 u8 *ptr = precv_frame->u.hdr.rx_data;
1401 u8 subtype;
1402
1403 subtype = GetFrameSubType(ptr); /* bit(7)~bit(2) */
1404
1405 /* only support station mode */
1406 if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) && check_fwstate(pmlmepriv, _FW_LINKED)
1407 && adapter->securitypriv.binstallBIPkey == true) {
1408 /* unicast management frame decrypt */
1409 if (pattrib->privacy && !(IS_MCAST(GetAddr1Ptr(ptr))) &&
1410 (subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC || subtype == WIFI_ACTION)) {
1411 u8 *mgmt_DATA;
1412 u32 data_len = 0;
1413
1414 pattrib->bdecrypted = 0;
1415 pattrib->encrypt = _AES_;
1416 pattrib->hdrlen = sizeof(struct ieee80211_hdr_3addr);
1417 /* set iv and icv length */
1418 SET_ICE_IV_LEN(pattrib->iv_len, pattrib->icv_len, pattrib->encrypt);
1419 memcpy(pattrib->ra, GetAddr1Ptr(ptr), ETH_ALEN);
1420 memcpy(pattrib->ta, GetAddr2Ptr(ptr), ETH_ALEN);
1421 /* actual management data frame body */
1422 data_len = pattrib->pkt_len - pattrib->hdrlen - pattrib->iv_len - pattrib->icv_len;
1423 mgmt_DATA = rtw_zmalloc(data_len);
1424 if (!mgmt_DATA) {
1425 DBG_871X("%s mgmt allocate fail !!!!!!!!!\n", __func__);
1426 goto validate_80211w_fail;
1427 }
1428 precv_frame = decryptor(adapter, precv_frame);
1429 /* save actual management data frame body */
1430 memcpy(mgmt_DATA, ptr+pattrib->hdrlen+pattrib->iv_len, data_len);
1431 /* overwrite the iv field */
1432 memcpy(ptr+pattrib->hdrlen, mgmt_DATA, data_len);
1433 /* remove the iv and icv length */
1434 pattrib->pkt_len = pattrib->pkt_len - pattrib->iv_len - pattrib->icv_len;
1435 kfree(mgmt_DATA);
1436 if (!precv_frame) {
1437 DBG_871X("%s mgmt descrypt fail !!!!!!!!!\n", __func__);
1438 goto validate_80211w_fail;
1439 }
1440 } else if (IS_MCAST(GetAddr1Ptr(ptr)) &&
1441 (subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC)) {
1442 sint BIP_ret = _SUCCESS;
1443 /* verify BIP MME IE of broadcast/multicast de-auth/disassoc packet */
1444 BIP_ret = rtw_BIP_verify(adapter, (u8 *)precv_frame);
1445 if (BIP_ret == _FAIL) {
1446 /* DBG_871X("802.11w BIP verify fail\n"); */
1447 goto validate_80211w_fail;
1448 } else if (BIP_ret == RTW_RX_HANDLED) {
1449 /* DBG_871X("802.11w recv none protected packet\n"); */
1450 /* issue sa query request */
1451 issue_action_SA_Query(adapter, NULL, 0, 0);
1452 goto validate_80211w_fail;
1453 }
1454 } else { /* 802.11w protect */
1455 if (subtype == WIFI_ACTION) {
1456 /* according 802.11-2012 standard, these five types are not robust types */
1457 if (ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_PUBLIC &&
1458 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_HT &&
1459 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_UNPROTECTED_WNM &&
1460 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_SELF_PROTECTED &&
1461 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_P2P) {
1462 DBG_871X("action frame category =%d should robust\n", ptr[WLAN_HDR_A3_LEN]);
1463 goto validate_80211w_fail;
1464 }
1465 } else if (subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC) {
1466 DBG_871X("802.11w recv none protected packet\n");
1467 /* issue sa query request */
1468 issue_action_SA_Query(adapter, NULL, 0, 0);
1469 goto validate_80211w_fail;
1470 }
1471 }
1472 }
1473 return _SUCCESS;
1474
1475 validate_80211w_fail:
1476 return _FAIL;
1477
1478 }
1479
dump_rx_packet(u8 * ptr)1480 static inline void dump_rx_packet(u8 *ptr)
1481 {
1482 int i;
1483
1484 DBG_871X("#############################\n");
1485 for (i = 0; i < 64; i = i+8)
1486 DBG_871X("%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:\n", *(ptr+i),
1487 *(ptr+i+1), *(ptr+i+2), *(ptr+i+3), *(ptr+i+4), *(ptr+i+5), *(ptr+i+6), *(ptr+i+7));
1488 DBG_871X("#############################\n");
1489 }
1490
1491 sint validate_recv_frame(struct adapter *adapter, union recv_frame *precv_frame);
validate_recv_frame(struct adapter * adapter,union recv_frame * precv_frame)1492 sint validate_recv_frame(struct adapter *adapter, union recv_frame *precv_frame)
1493 {
1494 /* shall check frame subtype, to / from ds, da, bssid */
1495
1496 /* then call check if rx seq/frag. duplicated. */
1497
1498 u8 type;
1499 u8 subtype;
1500 sint retval = _SUCCESS;
1501 u8 bDumpRxPkt;
1502
1503 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
1504
1505 u8 *ptr = precv_frame->u.hdr.rx_data;
1506 u8 ver = (unsigned char) (*ptr)&0x3;
1507
1508 /* add version chk */
1509 if (ver != 0) {
1510 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_data_frame fail! (ver!= 0)\n"));
1511 retval = _FAIL;
1512 DBG_COUNTER(adapter->rx_logs.core_rx_pre_ver_err);
1513 goto exit;
1514 }
1515
1516 type = GetFrameType(ptr);
1517 subtype = GetFrameSubType(ptr); /* bit(7)~bit(2) */
1518
1519 pattrib->to_fr_ds = get_tofr_ds(ptr);
1520
1521 pattrib->frag_num = GetFragNum(ptr);
1522 pattrib->seq_num = GetSequence(ptr);
1523
1524 pattrib->pw_save = GetPwrMgt(ptr);
1525 pattrib->mfrag = GetMFrag(ptr);
1526 pattrib->mdata = GetMData(ptr);
1527 pattrib->privacy = GetPrivacy(ptr);
1528 pattrib->order = GetOrder(ptr);
1529 rtw_hal_get_def_var(adapter, HAL_DEF_DBG_DUMP_RXPKT, &(bDumpRxPkt));
1530 if (bDumpRxPkt == 1) /* dump all rx packets */
1531 dump_rx_packet(ptr);
1532 else if ((bDumpRxPkt == 2) && (type == WIFI_MGT_TYPE))
1533 dump_rx_packet(ptr);
1534 else if ((bDumpRxPkt == 3) && (type == WIFI_DATA_TYPE))
1535 dump_rx_packet(ptr);
1536
1537 switch (type) {
1538 case WIFI_MGT_TYPE: /* mgnt */
1539 DBG_COUNTER(adapter->rx_logs.core_rx_pre_mgmt);
1540 if (validate_80211w_mgmt(adapter, precv_frame) == _FAIL) {
1541 retval = _FAIL;
1542 DBG_COUNTER(padapter->rx_logs.core_rx_pre_mgmt_err_80211w);
1543 break;
1544 }
1545
1546 retval = validate_recv_mgnt_frame(adapter, precv_frame);
1547 if (retval == _FAIL) {
1548 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_mgnt_frame fail\n"));
1549 DBG_COUNTER(adapter->rx_logs.core_rx_pre_mgmt_err);
1550 }
1551 retval = _FAIL; /* only data frame return _SUCCESS */
1552 break;
1553 case WIFI_CTRL_TYPE: /* ctrl */
1554 DBG_COUNTER(adapter->rx_logs.core_rx_pre_ctrl);
1555 retval = validate_recv_ctrl_frame(adapter, precv_frame);
1556 if (retval == _FAIL) {
1557 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_ctrl_frame fail\n"));
1558 DBG_COUNTER(adapter->rx_logs.core_rx_pre_ctrl_err);
1559 }
1560 retval = _FAIL; /* only data frame return _SUCCESS */
1561 break;
1562 case WIFI_DATA_TYPE: /* data */
1563 DBG_COUNTER(adapter->rx_logs.core_rx_pre_data);
1564
1565 pattrib->qos = (subtype & BIT(7)) ? 1:0;
1566 retval = validate_recv_data_frame(adapter, precv_frame);
1567 if (retval == _FAIL) {
1568 struct recv_priv *precvpriv = &adapter->recvpriv;
1569 /* RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_data_frame fail\n")); */
1570 precvpriv->rx_drop++;
1571 DBG_COUNTER(adapter->rx_logs.core_rx_pre_data_err);
1572 } else if (retval == _SUCCESS) {
1573 #ifdef DBG_RX_DUMP_EAP
1574 u8 bDumpRxPkt;
1575 u16 eth_type;
1576
1577 /* dump eapol */
1578 rtw_hal_get_def_var(adapter, HAL_DEF_DBG_DUMP_RXPKT, &(bDumpRxPkt));
1579 /* get ether_type */
1580 memcpy(ð_type, ptr + pattrib->hdrlen + pattrib->iv_len + LLC_HEADER_SIZE, 2);
1581 eth_type = ntohs((unsigned short) eth_type);
1582 if ((bDumpRxPkt == 4) && (eth_type == 0x888e))
1583 dump_rx_packet(ptr);
1584 #endif
1585 } else
1586 DBG_COUNTER(adapter->rx_logs.core_rx_pre_data_handled);
1587 break;
1588 default:
1589 DBG_COUNTER(adapter->rx_logs.core_rx_pre_unknown);
1590 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_data_frame fail! type = 0x%x\n", type));
1591 #ifdef DBG_RX_DROP_FRAME
1592 DBG_871X("DBG_RX_DROP_FRAME validate_recv_data_frame fail! type = 0x%x\n", type);
1593 #endif
1594 retval = _FAIL;
1595 break;
1596 }
1597
1598 exit:
1599 return retval;
1600 }
1601
1602
1603 /* remove the wlanhdr and add the eth_hdr */
1604 sint wlanhdr_to_ethhdr(union recv_frame *precvframe);
wlanhdr_to_ethhdr(union recv_frame * precvframe)1605 sint wlanhdr_to_ethhdr(union recv_frame *precvframe)
1606 {
1607 sint rmv_len;
1608 u16 eth_type, len;
1609 u8 bsnaphdr;
1610 u8 *psnap_type;
1611 struct ieee80211_snap_hdr *psnap;
1612 __be16 be_tmp;
1613 struct adapter *adapter = precvframe->u.hdr.adapter;
1614 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
1615 u8 *ptr = get_recvframe_data(precvframe) ; /* point to frame_ctrl field */
1616 struct rx_pkt_attrib *pattrib = &precvframe->u.hdr.attrib;
1617
1618 if (pattrib->encrypt) {
1619 recvframe_pull_tail(precvframe, pattrib->icv_len);
1620 }
1621
1622 psnap = (struct ieee80211_snap_hdr *)(ptr+pattrib->hdrlen + pattrib->iv_len);
1623 psnap_type = ptr+pattrib->hdrlen + pattrib->iv_len+SNAP_SIZE;
1624 /* convert hdr + possible LLC headers into Ethernet header */
1625 /* eth_type = (psnap_type[0] << 8) | psnap_type[1]; */
1626 if ((!memcmp(psnap, rfc1042_header, SNAP_SIZE) &&
1627 (memcmp(psnap_type, SNAP_ETH_TYPE_IPX, 2)) &&
1628 (memcmp(psnap_type, SNAP_ETH_TYPE_APPLETALK_AARP, 2))) ||
1629 /* eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) || */
1630 !memcmp(psnap, bridge_tunnel_header, SNAP_SIZE)) {
1631 /* remove RFC1042 or Bridge-Tunnel encapsulation and replace EtherType */
1632 bsnaphdr = true;
1633 } else
1634 /* Leave Ethernet header part of hdr and full payload */
1635 bsnaphdr = false;
1636
1637 rmv_len = pattrib->hdrlen + pattrib->iv_len + (bsnaphdr?SNAP_SIZE:0);
1638 len = precvframe->u.hdr.len - rmv_len;
1639
1640 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n ===pattrib->hdrlen: %x, pattrib->iv_len:%x ===\n\n", pattrib->hdrlen, pattrib->iv_len));
1641
1642 memcpy(&be_tmp, ptr+rmv_len, 2);
1643 eth_type = ntohs(be_tmp); /* pattrib->ether_type */
1644 pattrib->eth_type = eth_type;
1645
1646 #ifdef CONFIG_AUTO_AP_MODE
1647 if (0x8899 == pattrib->eth_type) {
1648 struct sta_info *psta = precvframe->u.hdr.psta;
1649
1650 DBG_871X("wlan rx: got eth_type = 0x%x\n", pattrib->eth_type);
1651
1652 if (psta && psta->isrc && psta->pid > 0) {
1653 u16 rx_pid;
1654
1655 rx_pid = *(u16 *)(ptr+rmv_len+2);
1656
1657 DBG_871X("wlan rx(pid = 0x%x): sta("MAC_FMT") pid = 0x%x\n",
1658 rx_pid, MAC_ARG(psta->hwaddr), psta->pid);
1659
1660 if (rx_pid == psta->pid) {
1661 int i;
1662 u16 len = *(u16 *)(ptr+rmv_len+4);
1663 /* u16 ctrl_type = *(u16*)(ptr+rmv_len+6); */
1664
1665 /* DBG_871X("RC: len = 0x%x, ctrl_type = 0x%x\n", len, ctrl_type); */
1666 DBG_871X("RC: len = 0x%x\n", len);
1667
1668 for (i = 0; i < len ; i++)
1669 DBG_871X("0x%x\n", *(ptr+rmv_len+6+i));
1670 /* DBG_871X("0x%x\n", *(ptr+rmv_len+8+i)); */
1671
1672 DBG_871X("RC-end\n");
1673 }
1674 }
1675 }
1676 #endif /* CONFIG_AUTO_AP_MODE */
1677
1678 if ((check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)) {
1679 ptr += rmv_len;
1680 *ptr = 0x87;
1681 *(ptr+1) = 0x12;
1682
1683 eth_type = 0x8712;
1684 /* append rx status for mp test packets */
1685 ptr = recvframe_pull(precvframe, (rmv_len-sizeof(struct ethhdr)+2)-24);
1686 memcpy(ptr, get_rxmem(precvframe), 24);
1687 ptr += 24;
1688 } else
1689 ptr = recvframe_pull(precvframe, (rmv_len-sizeof(struct ethhdr) + (bsnaphdr?2:0)));
1690
1691 memcpy(ptr, pattrib->dst, ETH_ALEN);
1692 memcpy(ptr+ETH_ALEN, pattrib->src, ETH_ALEN);
1693
1694 if (!bsnaphdr) {
1695 be_tmp = htons(len);
1696 memcpy(ptr+12, &be_tmp, 2);
1697 }
1698
1699 return _SUCCESS;
1700 }
1701
1702 /* perform defrag */
recvframe_defrag(struct adapter * adapter,struct __queue * defrag_q)1703 static union recv_frame *recvframe_defrag(struct adapter *adapter,
1704 struct __queue *defrag_q)
1705 {
1706 struct list_head *plist, *phead;
1707 u8 wlanhdr_offset;
1708 u8 curfragnum;
1709 struct recv_frame_hdr *pfhdr, *pnfhdr;
1710 union recv_frame *prframe, *pnextrframe;
1711 struct __queue *pfree_recv_queue;
1712
1713 curfragnum = 0;
1714 pfree_recv_queue = &adapter->recvpriv.free_recv_queue;
1715
1716 phead = get_list_head(defrag_q);
1717 plist = get_next(phead);
1718 prframe = (union recv_frame *)plist;
1719 pfhdr = &prframe->u.hdr;
1720 list_del_init(&(prframe->u.list));
1721
1722 if (curfragnum != pfhdr->attrib.frag_num) {
1723 /* the first fragment number must be 0 */
1724 /* free the whole queue */
1725 rtw_free_recvframe(prframe, pfree_recv_queue);
1726 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
1727
1728 return NULL;
1729 }
1730
1731 curfragnum++;
1732
1733 plist = get_list_head(defrag_q);
1734
1735 plist = get_next(plist);
1736
1737 while (phead != plist) {
1738 pnextrframe = (union recv_frame *)plist;
1739 pnfhdr = &pnextrframe->u.hdr;
1740
1741
1742 /* check the fragment sequence (2nd ~n fragment frame) */
1743
1744 if (curfragnum != pnfhdr->attrib.frag_num) {
1745 /* the fragment number must be increasing (after decache) */
1746 /* release the defrag_q & prframe */
1747 rtw_free_recvframe(prframe, pfree_recv_queue);
1748 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
1749 return NULL;
1750 }
1751
1752 curfragnum++;
1753
1754 /* copy the 2nd~n fragment frame's payload to the first fragment */
1755 /* get the 2nd~last fragment frame's payload */
1756
1757 wlanhdr_offset = pnfhdr->attrib.hdrlen + pnfhdr->attrib.iv_len;
1758
1759 recvframe_pull(pnextrframe, wlanhdr_offset);
1760
1761 /* append to first fragment frame's tail (if privacy frame, pull the ICV) */
1762 recvframe_pull_tail(prframe, pfhdr->attrib.icv_len);
1763
1764 /* memcpy */
1765 memcpy(pfhdr->rx_tail, pnfhdr->rx_data, pnfhdr->len);
1766
1767 recvframe_put(prframe, pnfhdr->len);
1768
1769 pfhdr->attrib.icv_len = pnfhdr->attrib.icv_len;
1770 plist = get_next(plist);
1771
1772 }
1773
1774 /* free the defrag_q queue and return the prframe */
1775 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
1776
1777 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("Performance defrag!!!!!\n"));
1778
1779 return prframe;
1780 }
1781
1782 /* check if need to defrag, if needed queue the frame to defrag_q */
recvframe_chk_defrag(struct adapter * padapter,union recv_frame * precv_frame)1783 union recv_frame *recvframe_chk_defrag(struct adapter *padapter, union recv_frame *precv_frame)
1784 {
1785 u8 ismfrag;
1786 u8 fragnum;
1787 u8 *psta_addr;
1788 struct recv_frame_hdr *pfhdr;
1789 struct sta_info *psta;
1790 struct sta_priv *pstapriv;
1791 struct list_head *phead;
1792 union recv_frame *prtnframe = NULL;
1793 struct __queue *pfree_recv_queue, *pdefrag_q;
1794
1795 pstapriv = &padapter->stapriv;
1796
1797 pfhdr = &precv_frame->u.hdr;
1798
1799 pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
1800
1801 /* need to define struct of wlan header frame ctrl */
1802 ismfrag = pfhdr->attrib.mfrag;
1803 fragnum = pfhdr->attrib.frag_num;
1804
1805 psta_addr = pfhdr->attrib.ta;
1806 psta = rtw_get_stainfo(pstapriv, psta_addr);
1807 if (!psta) {
1808 u8 type = GetFrameType(pfhdr->rx_data);
1809 if (type != WIFI_DATA_TYPE) {
1810 psta = rtw_get_bcmc_stainfo(padapter);
1811 pdefrag_q = &psta->sta_recvpriv.defrag_q;
1812 } else
1813 pdefrag_q = NULL;
1814 } else
1815 pdefrag_q = &psta->sta_recvpriv.defrag_q;
1816
1817 if ((ismfrag == 0) && (fragnum == 0))
1818 prtnframe = precv_frame;/* isn't a fragment frame */
1819
1820 if (ismfrag == 1) {
1821 /* 0~(n-1) fragment frame */
1822 /* enqueue to defraf_g */
1823 if (pdefrag_q) {
1824 if (fragnum == 0)
1825 /* the first fragment */
1826 if (!list_empty(&pdefrag_q->queue))
1827 /* free current defrag_q */
1828 rtw_free_recvframe_queue(pdefrag_q, pfree_recv_queue);
1829
1830
1831 /* Then enqueue the 0~(n-1) fragment into the defrag_q */
1832
1833 /* spin_lock(&pdefrag_q->lock); */
1834 phead = get_list_head(pdefrag_q);
1835 list_add_tail(&pfhdr->list, phead);
1836 /* spin_unlock(&pdefrag_q->lock); */
1837
1838 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("Enqueuq: ismfrag = %d, fragnum = %d\n", ismfrag, fragnum));
1839
1840 prtnframe = NULL;
1841
1842 } else {
1843 /* can't find this ta's defrag_queue, so free this recv_frame */
1844 rtw_free_recvframe(precv_frame, pfree_recv_queue);
1845 prtnframe = NULL;
1846 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("Free because pdefrag_q == NULL: ismfrag = %d, fragnum = %d\n", ismfrag, fragnum));
1847 }
1848
1849 }
1850
1851 if ((ismfrag == 0) && (fragnum != 0)) {
1852 /* the last fragment frame */
1853 /* enqueue the last fragment */
1854 if (pdefrag_q) {
1855 /* spin_lock(&pdefrag_q->lock); */
1856 phead = get_list_head(pdefrag_q);
1857 list_add_tail(&pfhdr->list, phead);
1858 /* spin_unlock(&pdefrag_q->lock); */
1859
1860 /* call recvframe_defrag to defrag */
1861 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("defrag: ismfrag = %d, fragnum = %d\n", ismfrag, fragnum));
1862 precv_frame = recvframe_defrag(padapter, pdefrag_q);
1863 prtnframe = precv_frame;
1864
1865 } else {
1866 /* can't find this ta's defrag_queue, so free this recv_frame */
1867 rtw_free_recvframe(precv_frame, pfree_recv_queue);
1868 prtnframe = NULL;
1869 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("Free because pdefrag_q == NULL: ismfrag = %d, fragnum = %d\n", ismfrag, fragnum));
1870 }
1871
1872 }
1873
1874
1875 if ((prtnframe) && (prtnframe->u.hdr.attrib.privacy)) {
1876 /* after defrag we must check tkip mic code */
1877 if (recvframe_chkmic(padapter, prtnframe) == _FAIL) {
1878 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvframe_chkmic(padapter, prtnframe) == _FAIL\n"));
1879 rtw_free_recvframe(prtnframe, pfree_recv_queue);
1880 prtnframe = NULL;
1881 }
1882 }
1883 return prtnframe;
1884 }
1885
amsdu_to_msdu(struct adapter * padapter,union recv_frame * prframe)1886 static int amsdu_to_msdu(struct adapter *padapter, union recv_frame *prframe)
1887 {
1888 int a_len, padding_len;
1889 u16 nSubframe_Length;
1890 u8 nr_subframes, i;
1891 u8 *pdata;
1892 _pkt *sub_pkt, *subframes[MAX_SUBFRAME_COUNT];
1893 struct recv_priv *precvpriv = &padapter->recvpriv;
1894 struct __queue *pfree_recv_queue = &(precvpriv->free_recv_queue);
1895
1896 nr_subframes = 0;
1897
1898 recvframe_pull(prframe, prframe->u.hdr.attrib.hdrlen);
1899
1900 if (prframe->u.hdr.attrib.iv_len > 0)
1901 recvframe_pull(prframe, prframe->u.hdr.attrib.iv_len);
1902
1903 a_len = prframe->u.hdr.len;
1904
1905 pdata = prframe->u.hdr.rx_data;
1906
1907 while (a_len > ETH_HLEN) {
1908
1909 /* Offset 12 denote 2 mac address */
1910 nSubframe_Length = get_unaligned_be16(pdata + 12);
1911
1912 if (a_len < (ETHERNET_HEADER_SIZE + nSubframe_Length)) {
1913 DBG_871X("nRemain_Length is %d and nSubframe_Length is : %d\n", a_len, nSubframe_Length);
1914 break;
1915 }
1916
1917 sub_pkt = rtw_os_alloc_msdu_pkt(prframe, nSubframe_Length, pdata);
1918 if (!sub_pkt) {
1919 DBG_871X("%s(): allocate sub packet fail !!!\n", __func__);
1920 break;
1921 }
1922
1923 /* move the data point to data content */
1924 pdata += ETH_HLEN;
1925 a_len -= ETH_HLEN;
1926
1927 subframes[nr_subframes++] = sub_pkt;
1928
1929 if (nr_subframes >= MAX_SUBFRAME_COUNT) {
1930 DBG_871X("ParseSubframe(): Too many Subframes! Packets dropped!\n");
1931 break;
1932 }
1933
1934 pdata += nSubframe_Length;
1935 a_len -= nSubframe_Length;
1936 if (a_len != 0) {
1937 padding_len = 4 - ((nSubframe_Length + ETH_HLEN) & (4-1));
1938 if (padding_len == 4) {
1939 padding_len = 0;
1940 }
1941
1942 if (a_len < padding_len) {
1943 DBG_871X("ParseSubframe(): a_len < padding_len !\n");
1944 break;
1945 }
1946 pdata += padding_len;
1947 a_len -= padding_len;
1948 }
1949 }
1950
1951 for (i = 0; i < nr_subframes; i++) {
1952 sub_pkt = subframes[i];
1953
1954 /* Indicate the packets to upper layer */
1955 if (sub_pkt) {
1956 rtw_os_recv_indicate_pkt(padapter, sub_pkt, &prframe->u.hdr.attrib);
1957 }
1958 }
1959
1960 prframe->u.hdr.len = 0;
1961 rtw_free_recvframe(prframe, pfree_recv_queue);/* free this recv_frame */
1962
1963 return _SUCCESS;
1964 }
1965
1966 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)1967 int check_indicate_seq(struct recv_reorder_ctrl *preorder_ctrl, u16 seq_num)
1968 {
1969 struct adapter *padapter = preorder_ctrl->padapter;
1970 struct dvobj_priv *psdpriv = padapter->dvobj;
1971 struct debug_priv *pdbgpriv = &psdpriv->drv_dbg;
1972 u8 wsize = preorder_ctrl->wsize_b;
1973 u16 wend = (preorder_ctrl->indicate_seq + wsize - 1) & 0xFFF;/* 4096; */
1974
1975 /* Rx Reorder initialize condition. */
1976 if (preorder_ctrl->indicate_seq == 0xFFFF) {
1977 preorder_ctrl->indicate_seq = seq_num;
1978 #ifdef DBG_RX_SEQ
1979 DBG_871X("DBG_RX_SEQ %s:%d init IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
1980 preorder_ctrl->indicate_seq, seq_num);
1981 #endif
1982
1983 /* DbgPrint("check_indicate_seq, 1st->indicate_seq =%d\n", precvpriv->indicate_seq); */
1984 }
1985
1986 /* DbgPrint("enter->check_indicate_seq(): IndicateSeq: %d, NewSeq: %d\n", precvpriv->indicate_seq, seq_num); */
1987
1988 /* Drop out the packet which SeqNum is smaller than WinStart */
1989 if (SN_LESS(seq_num, preorder_ctrl->indicate_seq)) {
1990 /* RT_TRACE(COMP_RX_REORDER, DBG_LOUD, ("CheckRxTsIndicateSeq(): Packet Drop! IndicateSeq: %d, NewSeq: %d\n", pTS->RxIndicateSeq, NewSeqNum)); */
1991 /* DbgPrint("CheckRxTsIndicateSeq(): Packet Drop! IndicateSeq: %d, NewSeq: %d\n", precvpriv->indicate_seq, seq_num); */
1992
1993 #ifdef DBG_RX_DROP_FRAME
1994 DBG_871X("%s IndicateSeq: %d > NewSeq: %d\n", __func__,
1995 preorder_ctrl->indicate_seq, seq_num);
1996 #endif
1997
1998
1999 return false;
2000 }
2001
2002 /* */
2003 /* Sliding window manipulation. Conditions includes: */
2004 /* 1. Incoming SeqNum is equal to WinStart =>Window shift 1 */
2005 /* 2. Incoming SeqNum is larger than the WinEnd => Window shift N */
2006 /* */
2007 if (SN_EQUAL(seq_num, preorder_ctrl->indicate_seq)) {
2008 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF;
2009
2010 #ifdef DBG_RX_SEQ
2011 DBG_871X("DBG_RX_SEQ %s:%d SN_EQUAL IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
2012 preorder_ctrl->indicate_seq, seq_num);
2013 #endif
2014 } else if (SN_LESS(wend, seq_num)) {
2015 /* RT_TRACE(COMP_RX_REORDER, DBG_LOUD, ("CheckRxTsIndicateSeq(): Window Shift! IndicateSeq: %d, NewSeq: %d\n", pTS->RxIndicateSeq, NewSeqNum)); */
2016 /* DbgPrint("CheckRxTsIndicateSeq(): Window Shift! IndicateSeq: %d, NewSeq: %d\n", precvpriv->indicate_seq, seq_num); */
2017
2018 /* boundary situation, when seq_num cross 0xFFF */
2019 if (seq_num >= (wsize - 1))
2020 preorder_ctrl->indicate_seq = seq_num + 1 - wsize;
2021 else
2022 preorder_ctrl->indicate_seq = 0xFFF - (wsize - (seq_num + 1)) + 1;
2023 pdbgpriv->dbg_rx_ampdu_window_shift_cnt++;
2024 #ifdef DBG_RX_SEQ
2025 DBG_871X("DBG_RX_SEQ %s:%d SN_LESS(wend, seq_num) IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
2026 preorder_ctrl->indicate_seq, seq_num);
2027 #endif
2028 }
2029
2030 /* DbgPrint("exit->check_indicate_seq(): IndicateSeq: %d, NewSeq: %d\n", precvpriv->indicate_seq, seq_num); */
2031
2032 return true;
2033 }
2034
2035 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)2036 int enqueue_reorder_recvframe(struct recv_reorder_ctrl *preorder_ctrl, union recv_frame *prframe)
2037 {
2038 struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib;
2039 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
2040 struct list_head *phead, *plist;
2041 union recv_frame *pnextrframe;
2042 struct rx_pkt_attrib *pnextattrib;
2043
2044 /* DbgPrint("+enqueue_reorder_recvframe()\n"); */
2045
2046 /* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */
2047 /* spin_lock(&ppending_recvframe_queue->lock); */
2048
2049
2050 phead = get_list_head(ppending_recvframe_queue);
2051 plist = get_next(phead);
2052
2053 while (phead != plist) {
2054 pnextrframe = (union recv_frame *)plist;
2055 pnextattrib = &pnextrframe->u.hdr.attrib;
2056
2057 if (SN_LESS(pnextattrib->seq_num, pattrib->seq_num))
2058 plist = get_next(plist);
2059 else if (SN_EQUAL(pnextattrib->seq_num, pattrib->seq_num))
2060 /* Duplicate entry is found!! Do not insert current entry. */
2061 /* RT_TRACE(COMP_RX_REORDER, DBG_TRACE, ("InsertRxReorderList(): Duplicate packet is dropped!! IndicateSeq: %d, NewSeq: %d\n", pTS->RxIndicateSeq, SeqNum)); */
2062 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
2063 return false;
2064 else
2065 break;
2066
2067 /* DbgPrint("enqueue_reorder_recvframe():while\n"); */
2068
2069 }
2070
2071
2072 /* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */
2073 /* spin_lock(&ppending_recvframe_queue->lock); */
2074
2075 list_del_init(&(prframe->u.hdr.list));
2076
2077 list_add_tail(&(prframe->u.hdr.list), plist);
2078
2079 /* spin_unlock(&ppending_recvframe_queue->lock); */
2080 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
2081
2082
2083 /* RT_TRACE(COMP_RX_REORDER, DBG_TRACE, ("InsertRxReorderList(): Pkt insert into buffer!! IndicateSeq: %d, NewSeq: %d\n", pTS->RxIndicateSeq, SeqNum)); */
2084 return true;
2085
2086 }
2087
2088 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)2089 void recv_indicatepkts_pkt_loss_cnt(struct debug_priv *pdbgpriv, u64 prev_seq, u64 current_seq)
2090 {
2091 if (current_seq < prev_seq)
2092 pdbgpriv->dbg_rx_ampdu_loss_count += (4096 + current_seq - prev_seq);
2093 else
2094 pdbgpriv->dbg_rx_ampdu_loss_count += (current_seq - prev_seq);
2095
2096 }
2097 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)2098 int recv_indicatepkts_in_order(struct adapter *padapter, struct recv_reorder_ctrl *preorder_ctrl, int bforced)
2099 {
2100 struct list_head *phead, *plist;
2101 union recv_frame *prframe;
2102 struct rx_pkt_attrib *pattrib;
2103 /* u8 index = 0; */
2104 int bPktInBuf = false;
2105 struct recv_priv *precvpriv = &padapter->recvpriv;
2106 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
2107 struct dvobj_priv *psdpriv = padapter->dvobj;
2108 struct debug_priv *pdbgpriv = &psdpriv->drv_dbg;
2109
2110 DBG_COUNTER(padapter->rx_logs.core_rx_post_indicate_in_oder);
2111
2112 /* DbgPrint("+recv_indicatepkts_in_order\n"); */
2113
2114 /* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */
2115 /* spin_lock(&ppending_recvframe_queue->lock); */
2116
2117 phead = get_list_head(ppending_recvframe_queue);
2118 plist = get_next(phead);
2119
2120 /* Handling some condition for forced indicate case. */
2121 if (bforced == true) {
2122 pdbgpriv->dbg_rx_ampdu_forced_indicate_count++;
2123 if (list_empty(phead)) {
2124 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
2125 /* spin_unlock(&ppending_recvframe_queue->lock); */
2126 return true;
2127 }
2128
2129 prframe = (union recv_frame *)plist;
2130 pattrib = &prframe->u.hdr.attrib;
2131
2132 #ifdef DBG_RX_SEQ
2133 DBG_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
2134 preorder_ctrl->indicate_seq, pattrib->seq_num);
2135 #endif
2136 recv_indicatepkts_pkt_loss_cnt(pdbgpriv, preorder_ctrl->indicate_seq, pattrib->seq_num);
2137 preorder_ctrl->indicate_seq = pattrib->seq_num;
2138
2139 }
2140
2141 /* Prepare indication list and indication. */
2142 /* Check if there is any packet need indicate. */
2143 while (!list_empty(phead)) {
2144
2145 prframe = (union recv_frame *)plist;
2146 pattrib = &prframe->u.hdr.attrib;
2147
2148 if (!SN_LESS(preorder_ctrl->indicate_seq, pattrib->seq_num)) {
2149 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
2150 ("recv_indicatepkts_in_order: indicate =%d seq =%d amsdu =%d\n",
2151 preorder_ctrl->indicate_seq, pattrib->seq_num, pattrib->amsdu));
2152
2153 plist = get_next(plist);
2154 list_del_init(&(prframe->u.hdr.list));
2155
2156 if (SN_EQUAL(preorder_ctrl->indicate_seq, pattrib->seq_num)) {
2157 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF;
2158 #ifdef DBG_RX_SEQ
2159 DBG_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
2160 preorder_ctrl->indicate_seq, pattrib->seq_num);
2161 #endif
2162 }
2163
2164 /* Set this as a lock to make sure that only one thread is indicating packet. */
2165 /* pTS->RxIndicateState = RXTS_INDICATE_PROCESSING; */
2166
2167 /* Indicate packets */
2168 /* RT_ASSERT((index<=REORDER_WIN_SIZE), ("RxReorderIndicatePacket(): Rx Reorder buffer full!!\n")); */
2169
2170
2171 /* indicate this recv_frame */
2172 /* DbgPrint("recv_indicatepkts_in_order, indicate_seq =%d, seq_num =%d\n", precvpriv->indicate_seq, pattrib->seq_num); */
2173 if (!pattrib->amsdu) {
2174 /* DBG_871X("recv_indicatepkts_in_order, amsdu!= 1, indicate_seq =%d, seq_num =%d\n", preorder_ctrl->indicate_seq, pattrib->seq_num); */
2175
2176 if ((padapter->bDriverStopped == false) &&
2177 (padapter->bSurpriseRemoved == false))
2178 rtw_recv_indicatepkt(padapter, prframe);/* indicate this recv_frame */
2179
2180 } else if (pattrib->amsdu == 1) {
2181 if (amsdu_to_msdu(padapter, prframe) != _SUCCESS)
2182 rtw_free_recvframe(prframe, &precvpriv->free_recv_queue);
2183
2184 } else {
2185 /* error condition; */
2186 }
2187
2188
2189 /* Update local variables. */
2190 bPktInBuf = false;
2191
2192 } else {
2193 bPktInBuf = true;
2194 break;
2195 }
2196
2197 /* DbgPrint("recv_indicatepkts_in_order():while\n"); */
2198
2199 }
2200
2201 /* spin_unlock(&ppending_recvframe_queue->lock); */
2202 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
2203
2204 return bPktInBuf;
2205 }
2206
2207 int recv_indicatepkt_reorder(struct adapter *padapter, union recv_frame *prframe);
recv_indicatepkt_reorder(struct adapter * padapter,union recv_frame * prframe)2208 int recv_indicatepkt_reorder(struct adapter *padapter, union recv_frame *prframe)
2209 {
2210 int retval = _SUCCESS;
2211 struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib;
2212 struct recv_reorder_ctrl *preorder_ctrl = prframe->u.hdr.preorder_ctrl;
2213 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
2214 struct dvobj_priv *psdpriv = padapter->dvobj;
2215 struct debug_priv *pdbgpriv = &psdpriv->drv_dbg;
2216
2217 DBG_COUNTER(padapter->rx_logs.core_rx_post_indicate_reoder);
2218
2219 if (!pattrib->amsdu) {
2220 /* s1. */
2221 wlanhdr_to_ethhdr(prframe);
2222
2223 if (pattrib->qos != 1) {
2224 if ((padapter->bDriverStopped == false) &&
2225 (padapter->bSurpriseRemoved == false)) {
2226 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("@@@@ recv_indicatepkt_reorder -recv_func recv_indicatepkt\n"));
2227
2228 rtw_recv_indicatepkt(padapter, prframe);
2229 return _SUCCESS;
2230
2231 }
2232
2233 #ifdef DBG_RX_DROP_FRAME
2234 DBG_871X("DBG_RX_DROP_FRAME %s pattrib->qos != 1\n", __func__);
2235 #endif
2236
2237 return _FAIL;
2238
2239 }
2240
2241 if (preorder_ctrl->enable == false) {
2242 /* indicate this recv_frame */
2243 preorder_ctrl->indicate_seq = pattrib->seq_num;
2244 #ifdef DBG_RX_SEQ
2245 DBG_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
2246 preorder_ctrl->indicate_seq, pattrib->seq_num);
2247 #endif
2248
2249 rtw_recv_indicatepkt(padapter, prframe);
2250
2251 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096;
2252 #ifdef DBG_RX_SEQ
2253 DBG_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
2254 preorder_ctrl->indicate_seq, pattrib->seq_num);
2255 #endif
2256
2257 return _SUCCESS;
2258 }
2259 } else if (pattrib->amsdu == 1) { /* temp filter -> means didn't support A-MSDUs in a A-MPDU */
2260 if (preorder_ctrl->enable == false) {
2261 preorder_ctrl->indicate_seq = pattrib->seq_num;
2262 #ifdef DBG_RX_SEQ
2263 DBG_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
2264 preorder_ctrl->indicate_seq, pattrib->seq_num);
2265 #endif
2266
2267 retval = amsdu_to_msdu(padapter, prframe);
2268
2269 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096;
2270 #ifdef DBG_RX_SEQ
2271 DBG_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
2272 preorder_ctrl->indicate_seq, pattrib->seq_num);
2273 #endif
2274
2275 if (retval != _SUCCESS) {
2276 #ifdef DBG_RX_DROP_FRAME
2277 DBG_871X("DBG_RX_DROP_FRAME %s amsdu_to_msdu fail\n", __func__);
2278 #endif
2279 }
2280
2281 return retval;
2282 }
2283 }
2284
2285 spin_lock_bh(&ppending_recvframe_queue->lock);
2286
2287 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
2288 ("recv_indicatepkt_reorder: indicate =%d seq =%d\n",
2289 preorder_ctrl->indicate_seq, pattrib->seq_num));
2290
2291 /* s2. check if winstart_b(indicate_seq) needs to been updated */
2292 if (!check_indicate_seq(preorder_ctrl, pattrib->seq_num)) {
2293 pdbgpriv->dbg_rx_ampdu_drop_count++;
2294 #ifdef DBG_RX_DROP_FRAME
2295 DBG_871X("DBG_RX_DROP_FRAME %s check_indicate_seq fail\n", __func__);
2296 #endif
2297 goto _err_exit;
2298 }
2299
2300
2301 /* s3. Insert all packet into Reorder Queue to maintain its ordering. */
2302 if (!enqueue_reorder_recvframe(preorder_ctrl, prframe)) {
2303 /* DbgPrint("recv_indicatepkt_reorder, enqueue_reorder_recvframe fail!\n"); */
2304 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
2305 /* return _FAIL; */
2306 #ifdef DBG_RX_DROP_FRAME
2307 DBG_871X("DBG_RX_DROP_FRAME %s enqueue_reorder_recvframe fail\n", __func__);
2308 #endif
2309 goto _err_exit;
2310 }
2311
2312
2313 /* s4. */
2314 /* Indication process. */
2315 /* After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets */
2316 /* with the SeqNum smaller than latest WinStart and buffer other packets. */
2317 /* */
2318 /* For Rx Reorder condition: */
2319 /* 1. All packets with SeqNum smaller than WinStart => Indicate */
2320 /* 2. All packets with SeqNum larger than or equal to WinStart => Buffer it. */
2321 /* */
2322
2323 /* recv_indicatepkts_in_order(padapter, preorder_ctrl, true); */
2324 if (recv_indicatepkts_in_order(padapter, preorder_ctrl, false) == true) {
2325 _set_timer(&preorder_ctrl->reordering_ctrl_timer, REORDER_WAIT_TIME);
2326 spin_unlock_bh(&ppending_recvframe_queue->lock);
2327 } else {
2328 spin_unlock_bh(&ppending_recvframe_queue->lock);
2329 del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
2330 }
2331
2332 return _SUCCESS;
2333
2334 _err_exit:
2335 spin_unlock_bh(&ppending_recvframe_queue->lock);
2336
2337 return _FAIL;
2338 }
2339
2340
rtw_reordering_ctrl_timeout_handler(struct timer_list * t)2341 void rtw_reordering_ctrl_timeout_handler(struct timer_list *t)
2342 {
2343 struct recv_reorder_ctrl *preorder_ctrl =
2344 from_timer(preorder_ctrl, t, reordering_ctrl_timer);
2345 struct adapter *padapter = preorder_ctrl->padapter;
2346 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
2347
2348
2349 if (padapter->bDriverStopped || padapter->bSurpriseRemoved)
2350 return;
2351
2352 /* DBG_871X("+rtw_reordering_ctrl_timeout_handler() =>\n"); */
2353
2354 spin_lock_bh(&ppending_recvframe_queue->lock);
2355
2356 if (recv_indicatepkts_in_order(padapter, preorder_ctrl, true) == true)
2357 _set_timer(&preorder_ctrl->reordering_ctrl_timer, REORDER_WAIT_TIME);
2358
2359 spin_unlock_bh(&ppending_recvframe_queue->lock);
2360
2361 }
2362
2363 int process_recv_indicatepkts(struct adapter *padapter, union recv_frame *prframe);
process_recv_indicatepkts(struct adapter * padapter,union recv_frame * prframe)2364 int process_recv_indicatepkts(struct adapter *padapter, union recv_frame *prframe)
2365 {
2366 int retval = _SUCCESS;
2367 /* struct recv_priv *precvpriv = &padapter->recvpriv; */
2368 /* struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib; */
2369 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
2370 struct ht_priv *phtpriv = &pmlmepriv->htpriv;
2371
2372 DBG_COUNTER(padapter->rx_logs.core_rx_post_indicate);
2373
2374 if (phtpriv->ht_option == true) { /* B/G/N Mode */
2375 /* prframe->u.hdr.preorder_ctrl = &precvpriv->recvreorder_ctrl[pattrib->priority]; */
2376
2377 if (recv_indicatepkt_reorder(padapter, prframe) != _SUCCESS) { /* including perform A-MPDU Rx Ordering Buffer Control */
2378 #ifdef DBG_RX_DROP_FRAME
2379 DBG_871X("DBG_RX_DROP_FRAME %s recv_indicatepkt_reorder error!\n", __func__);
2380 #endif
2381
2382 if ((padapter->bDriverStopped == false) &&
2383 (padapter->bSurpriseRemoved == false)) {
2384 retval = _FAIL;
2385 return retval;
2386 }
2387 }
2388 } else { /* B/G mode */
2389 retval = wlanhdr_to_ethhdr(prframe);
2390 if (retval != _SUCCESS) {
2391 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("wlanhdr_to_ethhdr: drop pkt\n"));
2392 #ifdef DBG_RX_DROP_FRAME
2393 DBG_871X("DBG_RX_DROP_FRAME %s wlanhdr_to_ethhdr error!\n", __func__);
2394 #endif
2395 return retval;
2396 }
2397
2398 if ((padapter->bDriverStopped == false) && (padapter->bSurpriseRemoved == false)) {
2399 /* indicate this recv_frame */
2400 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("@@@@ process_recv_indicatepkts- recv_func recv_indicatepkt\n"));
2401 rtw_recv_indicatepkt(padapter, prframe);
2402
2403
2404 } else {
2405 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("@@@@ process_recv_indicatepkts- recv_func free_indicatepkt\n"));
2406
2407 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("recv_func:bDriverStopped(%d) OR bSurpriseRemoved(%d)", padapter->bDriverStopped, padapter->bSurpriseRemoved));
2408 retval = _FAIL;
2409 return retval;
2410 }
2411
2412 }
2413
2414 return retval;
2415
2416 }
2417
recv_func_prehandle(struct adapter * padapter,union recv_frame * rframe)2418 static int recv_func_prehandle(struct adapter *padapter, union recv_frame *rframe)
2419 {
2420 int ret = _SUCCESS;
2421 struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
2422
2423 DBG_COUNTER(padapter->rx_logs.core_rx_pre);
2424
2425 /* check the frame crtl field and decache */
2426 ret = validate_recv_frame(padapter, rframe);
2427 if (ret != _SUCCESS) {
2428 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("recv_func: validate_recv_frame fail! drop pkt\n"));
2429 rtw_free_recvframe(rframe, pfree_recv_queue);/* free this recv_frame */
2430 goto exit;
2431 }
2432
2433 exit:
2434 return ret;
2435 }
2436
recv_func_posthandle(struct adapter * padapter,union recv_frame * prframe)2437 static int recv_func_posthandle(struct adapter *padapter, union recv_frame *prframe)
2438 {
2439 int ret = _SUCCESS;
2440 union recv_frame *orig_prframe = prframe;
2441 struct recv_priv *precvpriv = &padapter->recvpriv;
2442 struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
2443
2444 DBG_COUNTER(padapter->rx_logs.core_rx_post);
2445
2446 prframe = decryptor(padapter, prframe);
2447 if (!prframe) {
2448 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("decryptor: drop pkt\n"));
2449 #ifdef DBG_RX_DROP_FRAME
2450 DBG_871X("DBG_RX_DROP_FRAME %s decryptor: drop pkt\n", __func__);
2451 #endif
2452 ret = _FAIL;
2453 DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt_err);
2454 goto _recv_data_drop;
2455 }
2456
2457 prframe = recvframe_chk_defrag(padapter, prframe);
2458 if (!prframe) {
2459 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvframe_chk_defrag: drop pkt\n"));
2460 #ifdef DBG_RX_DROP_FRAME
2461 DBG_871X("DBG_RX_DROP_FRAME %s recvframe_chk_defrag: drop pkt\n", __func__);
2462 #endif
2463 DBG_COUNTER(padapter->rx_logs.core_rx_post_defrag_err);
2464 goto _recv_data_drop;
2465 }
2466
2467 prframe = portctrl(padapter, prframe);
2468 if (!prframe) {
2469 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("portctrl: drop pkt\n"));
2470 #ifdef DBG_RX_DROP_FRAME
2471 DBG_871X("DBG_RX_DROP_FRAME %s portctrl: drop pkt\n", __func__);
2472 #endif
2473 ret = _FAIL;
2474 DBG_COUNTER(padapter->rx_logs.core_rx_post_portctrl_err);
2475 goto _recv_data_drop;
2476 }
2477
2478 count_rx_stats(padapter, prframe, NULL);
2479
2480 ret = process_recv_indicatepkts(padapter, prframe);
2481 if (ret != _SUCCESS) {
2482 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recv_func: process_recv_indicatepkts fail!\n"));
2483 #ifdef DBG_RX_DROP_FRAME
2484 DBG_871X("DBG_RX_DROP_FRAME %s process_recv_indicatepkts fail!\n", __func__);
2485 #endif
2486 rtw_free_recvframe(orig_prframe, pfree_recv_queue);/* free this recv_frame */
2487 DBG_COUNTER(padapter->rx_logs.core_rx_post_indicate_err);
2488 goto _recv_data_drop;
2489 }
2490
2491 _recv_data_drop:
2492 precvpriv->rx_drop++;
2493 return ret;
2494 }
2495
2496
2497 int recv_func(struct adapter *padapter, union recv_frame *rframe);
recv_func(struct adapter * padapter,union recv_frame * rframe)2498 int recv_func(struct adapter *padapter, union recv_frame *rframe)
2499 {
2500 int ret;
2501 struct rx_pkt_attrib *prxattrib = &rframe->u.hdr.attrib;
2502 struct recv_priv *recvpriv = &padapter->recvpriv;
2503 struct security_priv *psecuritypriv = &padapter->securitypriv;
2504 struct mlme_priv *mlmepriv = &padapter->mlmepriv;
2505
2506 /* check if need to handle uc_swdec_pending_queue*/
2507 if (check_fwstate(mlmepriv, WIFI_STATION_STATE) && psecuritypriv->busetkipkey) {
2508 union recv_frame *pending_frame;
2509 int cnt = 0;
2510
2511 while ((pending_frame = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue))) {
2512 cnt++;
2513 DBG_COUNTER(padapter->rx_logs.core_rx_dequeue);
2514 recv_func_posthandle(padapter, pending_frame);
2515 }
2516
2517 if (cnt)
2518 DBG_871X(FUNC_ADPT_FMT" dequeue %d from uc_swdec_pending_queue\n",
2519 FUNC_ADPT_ARG(padapter), cnt);
2520 }
2521
2522 DBG_COUNTER(padapter->rx_logs.core_rx);
2523 ret = recv_func_prehandle(padapter, rframe);
2524
2525 if (ret == _SUCCESS) {
2526
2527 /* check if need to enqueue into uc_swdec_pending_queue*/
2528 if (check_fwstate(mlmepriv, WIFI_STATION_STATE) &&
2529 !IS_MCAST(prxattrib->ra) && prxattrib->encrypt > 0 &&
2530 (prxattrib->bdecrypted == 0 || psecuritypriv->sw_decrypt == true) &&
2531 psecuritypriv->ndisauthtype == Ndis802_11AuthModeWPAPSK &&
2532 !psecuritypriv->busetkipkey) {
2533 DBG_COUNTER(padapter->rx_logs.core_rx_enqueue);
2534 rtw_enqueue_recvframe(rframe, &padapter->recvpriv.uc_swdec_pending_queue);
2535 /* DBG_871X("%s: no key, enqueue uc_swdec_pending_queue\n", __func__); */
2536
2537 if (recvpriv->free_recvframe_cnt < NR_RECVFRAME/4) {
2538 /* to prevent from recvframe starvation, get recvframe from uc_swdec_pending_queue to free_recvframe_cnt */
2539 rframe = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue);
2540 if (rframe)
2541 goto do_posthandle;
2542 }
2543 goto exit;
2544 }
2545
2546 do_posthandle:
2547 ret = recv_func_posthandle(padapter, rframe);
2548 }
2549
2550 exit:
2551 return ret;
2552 }
2553
2554
rtw_recv_entry(union recv_frame * precvframe)2555 s32 rtw_recv_entry(union recv_frame *precvframe)
2556 {
2557 struct adapter *padapter;
2558 struct recv_priv *precvpriv;
2559 s32 ret = _SUCCESS;
2560
2561 /* RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("+rtw_recv_entry\n")); */
2562
2563 padapter = precvframe->u.hdr.adapter;
2564
2565 precvpriv = &padapter->recvpriv;
2566
2567 ret = recv_func(padapter, precvframe);
2568 if (ret == _FAIL) {
2569 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("rtw_recv_entry: recv_func return fail!!!\n"));
2570 goto _recv_entry_drop;
2571 }
2572
2573
2574 precvpriv->rx_pkts++;
2575
2576 return ret;
2577
2578 _recv_entry_drop:
2579
2580 /* RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("_recv_entry_drop\n")); */
2581
2582 return ret;
2583 }
2584
rtw_signal_stat_timer_hdl(struct timer_list * t)2585 static void rtw_signal_stat_timer_hdl(struct timer_list *t)
2586 {
2587 struct adapter *adapter =
2588 from_timer(adapter, t, recvpriv.signal_stat_timer);
2589 struct recv_priv *recvpriv = &adapter->recvpriv;
2590
2591 u32 tmp_s, tmp_q;
2592 u8 avg_signal_strength = 0;
2593 u8 avg_signal_qual = 0;
2594 u32 num_signal_strength = 0;
2595 u32 num_signal_qual = 0;
2596 u8 _alpha = 5; /* this value is based on converging_constant = 5000 and sampling_interval = 1000 */
2597
2598 if (adapter->recvpriv.is_signal_dbg) {
2599 /* update the user specific value, signal_strength_dbg, to signal_strength, rssi */
2600 adapter->recvpriv.signal_strength = adapter->recvpriv.signal_strength_dbg;
2601 adapter->recvpriv.rssi = (s8)translate_percentage_to_dbm((u8)adapter->recvpriv.signal_strength_dbg);
2602 } else {
2603
2604 if (recvpriv->signal_strength_data.update_req == 0) {/* update_req is clear, means we got rx */
2605 avg_signal_strength = recvpriv->signal_strength_data.avg_val;
2606 num_signal_strength = recvpriv->signal_strength_data.total_num;
2607 /* after avg_vals are acquired, we can re-stat the signal values */
2608 recvpriv->signal_strength_data.update_req = 1;
2609 }
2610
2611 if (recvpriv->signal_qual_data.update_req == 0) {/* update_req is clear, means we got rx */
2612 avg_signal_qual = recvpriv->signal_qual_data.avg_val;
2613 num_signal_qual = recvpriv->signal_qual_data.total_num;
2614 /* after avg_vals are acquired, we can re-stat the signal values */
2615 recvpriv->signal_qual_data.update_req = 1;
2616 }
2617
2618 if (num_signal_strength == 0) {
2619 if (rtw_get_on_cur_ch_time(adapter) == 0
2620 || jiffies_to_msecs(jiffies - rtw_get_on_cur_ch_time(adapter)) < 2 * adapter->mlmeextpriv.mlmext_info.bcn_interval
2621 ) {
2622 goto set_timer;
2623 }
2624 }
2625
2626 if (check_fwstate(&adapter->mlmepriv, _FW_UNDER_SURVEY) == true
2627 || check_fwstate(&adapter->mlmepriv, _FW_LINKED) == false
2628 ) {
2629 goto set_timer;
2630 }
2631
2632 /* update value of signal_strength, rssi, signal_qual */
2633 tmp_s = (avg_signal_strength+(_alpha-1)*recvpriv->signal_strength);
2634 if (tmp_s % _alpha)
2635 tmp_s = tmp_s/_alpha + 1;
2636 else
2637 tmp_s = tmp_s/_alpha;
2638 if (tmp_s > 100)
2639 tmp_s = 100;
2640
2641 tmp_q = (avg_signal_qual+(_alpha-1)*recvpriv->signal_qual);
2642 if (tmp_q % _alpha)
2643 tmp_q = tmp_q/_alpha + 1;
2644 else
2645 tmp_q = tmp_q/_alpha;
2646 if (tmp_q > 100)
2647 tmp_q = 100;
2648
2649 recvpriv->signal_strength = tmp_s;
2650 recvpriv->rssi = (s8)translate_percentage_to_dbm(tmp_s);
2651 recvpriv->signal_qual = tmp_q;
2652
2653 #if defined(DBG_RX_SIGNAL_DISPLAY_PROCESSING) && 1
2654 DBG_871X(FUNC_ADPT_FMT" signal_strength:%3u, rssi:%3d, signal_qual:%3u"
2655 ", num_signal_strength:%u, num_signal_qual:%u"
2656 ", on_cur_ch_ms:%d"
2657 "\n"
2658 , FUNC_ADPT_ARG(adapter)
2659 , recvpriv->signal_strength
2660 , recvpriv->rssi
2661 , recvpriv->signal_qual
2662 , num_signal_strength, num_signal_qual
2663 , rtw_get_on_cur_ch_time(adapter) ? jiffies_to_msecs(jiffies - rtw_get_on_cur_ch_time(adapter)) : 0
2664 );
2665 #endif
2666 }
2667
2668 set_timer:
2669 rtw_set_signal_stat_timer(recvpriv);
2670
2671 }
2672