1 // SPDX-License-Identifier: GPL-2.0
2 /******************************************************************************
4 * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
6 ******************************************************************************/
9 #include <linux/ieee80211.h>
11 #include <osdep_service.h>
12 #include <drv_types.h>
13 #include <recv_osdep.h>
14 #include <mlme_osdep.h>
17 #include <linux/vmalloc.h>
19 #define ETHERNET_HEADER_SIZE 14 /* Ethernet Header Length */
20 #define LLC_HEADER_SIZE 6 /* LLC Header Length */
22 static u8 SNAP_ETH_TYPE_IPX[2] = {0x81, 0x37};
23 static u8 SNAP_ETH_TYPE_APPLETALK_AARP[2] = {0x80, 0xf3};
25 /* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
26 static u8 rtw_bridge_tunnel_header[] = {
27 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8
30 static u8 rtw_rfc1042_header[] = {
31 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00
34 static void rtw_signal_stat_timer_hdl(struct timer_list *t);
36 void _rtw_init_sta_recv_priv(struct sta_recv_priv *psta_recvpriv)
38 memset((u8 *)psta_recvpriv, 0, sizeof(struct sta_recv_priv));
40 spin_lock_init(&psta_recvpriv->lock);
42 _rtw_init_queue(&psta_recvpriv->defrag_q);
45 int _rtw_init_recv_priv(struct recv_priv *precvpriv, struct adapter *padapter)
49 struct recv_frame *precvframe;
53 _rtw_init_queue(&precvpriv->free_recv_queue);
54 _rtw_init_queue(&precvpriv->recv_pending_queue);
55 _rtw_init_queue(&precvpriv->uc_swdec_pending_queue);
57 precvpriv->adapter = padapter;
59 precvpriv->pallocated_frame_buf = vzalloc(NR_RECVFRAME * sizeof(struct recv_frame) + RXFRAME_ALIGN_SZ);
61 if (!precvpriv->pallocated_frame_buf)
64 precvframe = PTR_ALIGN(precvpriv->pallocated_frame_buf, RXFRAME_ALIGN_SZ);
66 for (i = 0; i < NR_RECVFRAME; i++) {
67 INIT_LIST_HEAD(&(precvframe->list));
69 list_add_tail(&(precvframe->list),
70 &(precvpriv->free_recv_queue.queue));
72 precvframe->pkt = NULL;
74 precvframe->adapter = padapter;
77 res = rtw_hal_init_recv_priv(padapter);
79 timer_setup(&precvpriv->signal_stat_timer, rtw_signal_stat_timer_hdl,
82 precvpriv->signal_stat_sampling_interval = 1000; /* ms */
84 rtw_set_signal_stat_timer(precvpriv);
89 void _rtw_free_recv_priv(struct recv_priv *precvpriv)
91 struct adapter *padapter = precvpriv->adapter;
93 rtw_free_uc_swdec_pending_queue(padapter);
95 vfree(precvpriv->pallocated_frame_buf);
97 rtw_hal_free_recv_priv(padapter);
100 struct recv_frame *_rtw_alloc_recvframe(struct __queue *pfree_recv_queue)
102 struct recv_frame *hdr;
104 hdr = list_first_entry_or_null(&pfree_recv_queue->queue,
105 struct recv_frame, list);
107 list_del_init(&hdr->list);
112 struct recv_frame *rtw_alloc_recvframe(struct __queue *pfree_recv_queue)
114 struct recv_frame *precvframe;
116 spin_lock_bh(&pfree_recv_queue->lock);
118 precvframe = _rtw_alloc_recvframe(pfree_recv_queue);
120 spin_unlock_bh(&pfree_recv_queue->lock);
125 int rtw_free_recvframe(struct recv_frame *precvframe,
126 struct __queue *pfree_recv_queue)
130 if (precvframe->pkt) {
131 dev_kfree_skb_any(precvframe->pkt);/* free skb by driver */
132 precvframe->pkt = NULL;
135 spin_lock_bh(&pfree_recv_queue->lock);
137 list_del_init(&(precvframe->list));
139 list_add_tail(&(precvframe->list), get_list_head(pfree_recv_queue));
141 spin_unlock_bh(&pfree_recv_queue->lock);
146 int _rtw_enqueue_recvframe(struct recv_frame *precvframe, struct __queue *queue)
148 list_del_init(&(precvframe->list));
149 list_add_tail(&(precvframe->list), get_list_head(queue));
154 int rtw_enqueue_recvframe(struct recv_frame *precvframe, struct __queue *queue)
158 spin_lock_bh(&queue->lock);
159 ret = _rtw_enqueue_recvframe(precvframe, queue);
160 spin_unlock_bh(&queue->lock);
166 caller : defrag ; recvframe_chk_defrag in recv_thread (passive)
167 pframequeue: defrag_queue : will be accessed in recv_thread (passive)
169 using spinlock to protect
173 void rtw_free_recvframe_queue(struct __queue *pframequeue, struct __queue *pfree_recv_queue)
175 struct recv_frame *hdr;
176 struct list_head *plist, *phead;
178 spin_lock(&pframequeue->lock);
180 phead = get_list_head(pframequeue);
183 while (phead != plist) {
184 hdr = list_entry(plist, struct recv_frame, list);
188 rtw_free_recvframe(hdr, pfree_recv_queue);
191 spin_unlock(&pframequeue->lock);
194 u32 rtw_free_uc_swdec_pending_queue(struct adapter *adapter)
197 struct recv_frame *pending_frame;
199 while ((pending_frame = rtw_alloc_recvframe(&adapter->recvpriv.uc_swdec_pending_queue))) {
200 rtw_free_recvframe(pending_frame, &adapter->recvpriv.free_recv_queue);
201 DBG_88E("%s: dequeue uc_swdec_pending_queue\n", __func__);
208 static int recvframe_chkmic(struct adapter *adapter,
209 struct recv_frame *precvframe)
211 int i, res = _SUCCESS;
214 u8 bmic_err = false, brpt_micerror = true;
215 u8 *pframe, *payload, *pframemic;
217 struct sta_info *stainfo;
218 struct rx_pkt_attrib *prxattrib = &precvframe->attrib;
219 struct security_priv *psecuritypriv = &adapter->securitypriv;
221 struct mlme_ext_priv *pmlmeext = &adapter->mlmeextpriv;
222 struct mlme_ext_info *pmlmeinfo = &(pmlmeext->mlmext_info);
224 stainfo = rtw_get_stainfo(&adapter->stapriv, &prxattrib->ta[0]);
226 if (prxattrib->encrypt == _TKIP_) {
227 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
228 ("\n %s: prxattrib->encrypt==_TKIP_\n", __func__));
229 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
230 ("\n %s: da=0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x\n",
231 __func__, prxattrib->ra[0], prxattrib->ra[1], prxattrib->ra[2],
232 prxattrib->ra[3], prxattrib->ra[4], prxattrib->ra[5]));
234 /* calculate mic code */
236 if (IS_MCAST(prxattrib->ra)) {
237 if (!psecuritypriv) {
239 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
240 ("\n %s: didn't install group key!!!!!!!!!!\n", __func__));
241 DBG_88E("\n %s: didn't install group key!!!!!!!!!!\n", __func__);
244 mickey = &psecuritypriv->dot118021XGrprxmickey[prxattrib->key_index].skey[0];
246 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
247 ("\n %s: bcmc key\n", __func__));
249 mickey = &stainfo->dot11tkiprxmickey.skey[0];
250 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
251 ("\n %s: unicast key\n", __func__));
254 /* icv_len included the mic code */
255 datalen = precvframe->pkt->len-prxattrib->hdrlen -
256 prxattrib->iv_len-prxattrib->icv_len-8;
257 pframe = precvframe->pkt->data;
258 payload = pframe+prxattrib->hdrlen+prxattrib->iv_len;
260 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n prxattrib->iv_len=%d prxattrib->icv_len=%d\n", prxattrib->iv_len, prxattrib->icv_len));
261 rtw_seccalctkipmic(mickey, pframe, payload, datalen, &miccode[0],
262 (unsigned char)prxattrib->priority); /* care the length of the data */
264 pframemic = payload+datalen;
268 for (i = 0; i < 8; i++) {
269 if (miccode[i] != *(pframemic+i)) {
270 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
271 ("%s: miccode[%d](%02x)!=*(pframemic+%d)(%02x) ",
272 __func__, i, miccode[i], i, *(pframemic + i)));
278 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
279 ("\n *(pframemic-8)-*(pframemic-1)=0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x\n",
280 *(pframemic-8), *(pframemic-7), *(pframemic-6),
281 *(pframemic-5), *(pframemic-4), *(pframemic-3),
282 *(pframemic-2), *(pframemic-1)));
283 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
284 ("\n *(pframemic-16)-*(pframemic-9)=0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x\n",
285 *(pframemic-16), *(pframemic-15), *(pframemic-14),
286 *(pframemic-13), *(pframemic-12), *(pframemic-11),
287 *(pframemic-10), *(pframemic-9)));
291 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
292 ("\n ======demp packet (len=%d)======\n",
293 precvframe->pkt->len));
294 for (i = 0; i < precvframe->pkt->len; i += 8) {
295 RT_TRACE(_module_rtl871x_recv_c_,
297 ("0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x",
298 *(precvframe->pkt->data+i),
299 *(precvframe->pkt->data+i+1),
300 *(precvframe->pkt->data+i+2),
301 *(precvframe->pkt->data+i+3),
302 *(precvframe->pkt->data+i+4),
303 *(precvframe->pkt->data+i+5),
304 *(precvframe->pkt->data+i+6),
305 *(precvframe->pkt->data+i+7)));
307 RT_TRACE(_module_rtl871x_recv_c_,
309 ("\n ====== demp packet end [len=%d]======\n",
310 precvframe->pkt->len));
311 RT_TRACE(_module_rtl871x_recv_c_,
317 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
318 ("ra=0x%.2x 0x%.2x 0x%.2x 0x%.2x 0x%.2x 0x%.2x psecuritypriv->binstallGrpkey=%d ",
319 prxattrib->ra[0], prxattrib->ra[1], prxattrib->ra[2],
320 prxattrib->ra[3], prxattrib->ra[4], prxattrib->ra[5], psecuritypriv->binstallGrpkey));
322 /* double check key_index for some timing issue , */
323 /* cannot compare with psecuritypriv->dot118021XGrpKeyid also cause timing issue */
324 if ((IS_MCAST(prxattrib->ra) == true) && (prxattrib->key_index != pmlmeinfo->key_index))
325 brpt_micerror = false;
327 if ((prxattrib->bdecrypted) && (brpt_micerror)) {
328 rtw_handle_tkip_mic_err(adapter, (u8)IS_MCAST(prxattrib->ra));
329 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" mic error :prxattrib->bdecrypted=%d ", prxattrib->bdecrypted));
330 DBG_88E(" mic error :prxattrib->bdecrypted=%d\n", prxattrib->bdecrypted);
332 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" mic error :prxattrib->bdecrypted=%d ", prxattrib->bdecrypted));
333 DBG_88E(" mic error :prxattrib->bdecrypted=%d\n", prxattrib->bdecrypted);
338 if ((!psecuritypriv->bcheck_grpkey) && (IS_MCAST(prxattrib->ra))) {
339 psecuritypriv->bcheck_grpkey = true;
340 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("psecuritypriv->bcheck_grpkey = true"));
344 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
345 ("%s: rtw_get_stainfo==NULL!!!\n", __func__));
348 skb_trim(precvframe->pkt, precvframe->pkt->len - 8);
356 /* decrypt and set the ivlen, icvlen of the recv_frame */
357 static struct recv_frame *decryptor(struct adapter *padapter,
358 struct recv_frame *precv_frame)
360 struct rx_pkt_attrib *prxattrib = &precv_frame->attrib;
361 struct security_priv *psecuritypriv = &padapter->securitypriv;
362 struct recv_frame *return_packet = precv_frame;
365 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("prxstat->decrypted=%x prxattrib->encrypt=0x%03x\n", prxattrib->bdecrypted, prxattrib->encrypt));
367 if (prxattrib->encrypt > 0) {
368 u8 *iv = precv_frame->pkt->data+prxattrib->hdrlen;
370 prxattrib->key_index = (((iv[3])>>6)&0x3);
372 if (prxattrib->key_index > WEP_KEYS) {
373 DBG_88E("prxattrib->key_index(%d)>WEP_KEYS\n", prxattrib->key_index);
375 switch (prxattrib->encrypt) {
378 prxattrib->key_index = psecuritypriv->dot11PrivacyKeyIndex;
383 prxattrib->key_index = psecuritypriv->dot118021XGrpKeyid;
389 if ((prxattrib->encrypt > 0) && (prxattrib->bdecrypted == 0)) {
390 psecuritypriv->hw_decrypted = false;
392 switch (prxattrib->encrypt) {
395 res = rtw_wep_decrypt(padapter, (u8 *)precv_frame);
398 res = rtw_tkip_decrypt(padapter, (u8 *)precv_frame);
401 res = rtw_aes_decrypt(padapter, (u8 *)precv_frame);
406 } else if (prxattrib->bdecrypted == 1 && prxattrib->encrypt > 0 &&
407 (psecuritypriv->busetkipkey == 1 || prxattrib->encrypt != _TKIP_))
408 psecuritypriv->hw_decrypted = true;
411 rtw_free_recvframe(return_packet, &padapter->recvpriv.free_recv_queue);
412 return_packet = NULL;
415 return return_packet;
418 /* set the security information in the recv_frame */
419 static struct recv_frame *portctrl(struct adapter *adapter,
420 struct recv_frame *precv_frame)
424 struct recv_frame *pfhdr;
425 struct sta_info *psta;
426 struct sta_priv *pstapriv;
427 struct recv_frame *prtnframe;
429 u16 eapol_type = 0x888e;/* for Funia BD's WPA issue */
430 struct rx_pkt_attrib *pattrib;
433 pstapriv = &adapter->stapriv;
435 auth_alg = adapter->securitypriv.dot11AuthAlgrthm;
437 ptr = precv_frame->pkt->data;
439 pattrib = &pfhdr->attrib;
440 psta_addr = pattrib->ta;
441 psta = rtw_get_stainfo(pstapriv, psta_addr);
445 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########%s:adapter->securitypriv.dot11AuthAlgrthm=%d\n", __func__, adapter->securitypriv.dot11AuthAlgrthm));
449 ptr = ptr + pfhdr->attrib.hdrlen + LLC_HEADER_SIZE + pfhdr->attrib.iv_len;
450 memcpy(&be_tmp, ptr, 2);
451 ether_type = ntohs(be_tmp);
453 if ((psta != NULL) && (psta->ieee8021x_blocked)) {
455 /* only accept EAPOL frame */
456 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########%s:psta->ieee8021x_blocked==1\n", __func__));
458 if (ether_type == eapol_type) {
459 prtnframe = precv_frame;
461 /* free this frame */
462 rtw_free_recvframe(precv_frame, &adapter->recvpriv.free_recv_queue);
467 /* check decryption status, and decrypt the frame if needed */
468 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########%s:psta->ieee8021x_blocked==0\n", __func__));
469 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
470 ("%s:precv_frame->hdr.attrib.privacy=%x\n",
471 __func__, precv_frame->attrib.privacy));
473 if (pattrib->bdecrypted == 0)
474 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("%s:prxstat->decrypted=%x\n", __func__, pattrib->bdecrypted));
476 prtnframe = precv_frame;
477 /* check is the EAPOL frame or not (Rekey) */
478 if (ether_type == eapol_type) {
479 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("########%s:ether_type==0x888e\n", __func__));
482 prtnframe = precv_frame;
484 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########%s:ether_type=0x%04x\n", __func__, ether_type));
488 prtnframe = precv_frame;
494 static int recv_decache(struct recv_frame *precv_frame, u8 bretry,
495 struct stainfo_rxcache *prxcache)
497 int tid = precv_frame->attrib.priority;
499 u16 seq_ctrl = ((precv_frame->attrib.seq_num&0xffff) << 4) |
500 (precv_frame->attrib.frag_num & 0xf);
503 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("%s, (tid>15)! seq_ctrl=0x%x, tid=0x%x\n", __func__, seq_ctrl, tid));
508 if (1) {/* if (bretry) */
509 if (seq_ctrl == prxcache->tid_rxseq[tid]) {
510 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("%s, seq_ctrl=0x%x, tid=0x%x, tid_rxseq=0x%x\n", __func__, seq_ctrl, tid, prxcache->tid_rxseq[tid]));
516 prxcache->tid_rxseq[tid] = seq_ctrl;
521 static void process_pwrbit_data(struct adapter *padapter,
522 struct recv_frame *precv_frame)
524 #ifdef CONFIG_88EU_AP_MODE
525 unsigned char pwrbit;
526 u8 *ptr = precv_frame->pkt->data;
527 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
528 struct sta_priv *pstapriv = &padapter->stapriv;
529 struct sta_info *psta = NULL;
531 psta = rtw_get_stainfo(pstapriv, pattrib->src);
533 pwrbit = GetPwrMgt(ptr);
537 if (!(psta->state & WIFI_SLEEP_STATE))
538 stop_sta_xmit(padapter, psta);
540 if (psta->state & WIFI_SLEEP_STATE)
541 wakeup_sta_to_xmit(padapter, psta);
548 static void process_wmmps_data(struct adapter *padapter,
549 struct recv_frame *precv_frame)
551 #ifdef CONFIG_88EU_AP_MODE
552 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
553 struct sta_priv *pstapriv = &padapter->stapriv;
554 struct sta_info *psta = NULL;
556 psta = rtw_get_stainfo(pstapriv, pattrib->src);
561 if (!psta->qos_option)
564 if (!(psta->qos_info&0xf))
567 if (psta->state&WIFI_SLEEP_STATE) {
570 switch (pattrib->priority) {
573 wmmps_ac = psta->uapsd_bk&BIT(1);
577 wmmps_ac = psta->uapsd_vi&BIT(1);
581 wmmps_ac = psta->uapsd_vo&BIT(1);
586 wmmps_ac = psta->uapsd_be&BIT(1);
591 if (psta->sleepq_ac_len > 0) {
592 /* process received triggered frame */
593 xmit_delivery_enabled_frames(padapter, psta);
595 /* issue one qos null frame with More data bit = 0 and the EOSP bit set (= 1) */
596 issue_qos_nulldata(padapter, psta->hwaddr, (u16)pattrib->priority, 0, 0);
604 static void count_rx_stats(struct adapter *padapter,
605 struct recv_frame *prframe,
606 struct sta_info *sta)
609 struct sta_info *psta = NULL;
610 struct stainfo_stats *pstats = NULL;
611 struct rx_pkt_attrib *pattrib = &prframe->attrib;
612 struct recv_priv *precvpriv = &padapter->recvpriv;
614 sz = prframe->pkt->len;
615 precvpriv->rx_bytes += sz;
617 padapter->mlmepriv.LinkDetectInfo.NumRxOkInPeriod++;
619 if (!is_multicast_ether_addr(pattrib->dst))
620 padapter->mlmepriv.LinkDetectInfo.NumRxUnicastOkInPeriod++;
625 psta = prframe->psta;
628 pstats = &psta->sta_stats;
630 pstats->rx_data_pkts++;
631 pstats->rx_bytes += sz;
635 int sta2sta_data_frame(
636 struct adapter *adapter,
637 struct recv_frame *precv_frame,
638 struct sta_info **psta
641 int sta2sta_data_frame(struct adapter *adapter, struct recv_frame *precv_frame,
642 struct sta_info **psta)
645 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
646 struct sta_priv *pstapriv = &adapter->stapriv;
647 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
648 u8 *mybssid = get_bssid(pmlmepriv);
649 u8 *myhwaddr = myid(&adapter->eeprompriv);
651 int bmcast = IS_MCAST(pattrib->dst);
653 if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true) ||
654 (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) == true)) {
655 /* filter packets that SA is myself or multicast or broadcast */
656 if (!memcmp(myhwaddr, pattrib->src, ETH_ALEN)) {
657 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" SA==myself\n"));
662 if ((memcmp(myhwaddr, pattrib->dst, ETH_ALEN)) && (!bmcast)) {
667 if (!memcmp(pattrib->bssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
668 !memcmp(mybssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
669 memcmp(pattrib->bssid, mybssid, ETH_ALEN)) {
674 sta_addr = pattrib->src;
675 } else if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) {
676 /* For Station mode, sa and bssid should always be BSSID, and DA is my mac-address */
677 if (memcmp(pattrib->bssid, pattrib->src, ETH_ALEN)) {
678 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("bssid!=TA under STATION_MODE; drop pkt\n"));
682 sta_addr = pattrib->bssid;
683 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
685 /* For AP mode, if DA == MCAST, then BSSID should be also MCAST */
686 if (!IS_MCAST(pattrib->bssid)) {
690 } else { /* not mc-frame */
691 /* For AP mode, if DA is non-MCAST, then it must be BSSID, and bssid == BSSID */
692 if (memcmp(pattrib->bssid, pattrib->dst, ETH_ALEN)) {
697 sta_addr = pattrib->src;
704 *psta = rtw_get_bcmc_stainfo(adapter);
706 *psta = rtw_get_stainfo(pstapriv, sta_addr); /* get ap_info */
709 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("can't get psta under %s ; drop pkt\n", __func__));
718 static int ap2sta_data_frame(
719 struct adapter *adapter,
720 struct recv_frame *precv_frame,
721 struct sta_info **psta)
723 u8 *ptr = precv_frame->pkt->data;
724 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
726 struct sta_priv *pstapriv = &adapter->stapriv;
727 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
728 u8 *mybssid = get_bssid(pmlmepriv);
729 u8 *myhwaddr = myid(&adapter->eeprompriv);
730 int bmcast = IS_MCAST(pattrib->dst);
732 if ((check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true) &&
733 (check_fwstate(pmlmepriv, _FW_LINKED) == true ||
734 check_fwstate(pmlmepriv, _FW_UNDER_LINKING))) {
735 /* filter packets that SA is myself or multicast or broadcast */
736 if (!memcmp(myhwaddr, pattrib->src, ETH_ALEN)) {
737 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" SA==myself\n"));
742 /* da should be for me */
743 if ((memcmp(myhwaddr, pattrib->dst, ETH_ALEN)) && (!bmcast)) {
744 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
745 (" %s: compare DA fail; DA=%pM\n", __func__, (pattrib->dst)));
751 if (!memcmp(pattrib->bssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
752 !memcmp(mybssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
753 (memcmp(pattrib->bssid, mybssid, ETH_ALEN))) {
754 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
755 (" %s: compare BSSID fail ; BSSID=%pM\n", __func__, (pattrib->bssid)));
756 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("mybssid=%pM\n", (mybssid)));
759 DBG_88E("issue_deauth to the nonassociated ap=%pM for the reason(7)\n", (pattrib->bssid));
760 issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
768 *psta = rtw_get_bcmc_stainfo(adapter);
770 *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get ap_info */
773 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("ap2sta: can't get psta under STATION_MODE ; drop pkt\n"));
778 /* if ((GetFrameSubType(ptr) & WIFI_QOS_DATA_TYPE) == WIFI_QOS_DATA_TYPE) { */
781 if (GetFrameSubType(ptr) & BIT(6)) {
782 /* No data, will not indicate to upper layer, temporily count it here */
783 count_rx_stats(adapter, precv_frame, *psta);
784 ret = RTW_RX_HANDLED;
787 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
789 ret = RTW_RX_HANDLED;
792 if (!memcmp(myhwaddr, pattrib->dst, ETH_ALEN) && (!bmcast)) {
793 *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get sta_info */
795 DBG_88E("issue_deauth to the ap =%pM for the reason(7)\n", (pattrib->bssid));
797 issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
809 static int sta2ap_data_frame(struct adapter *adapter,
810 struct recv_frame *precv_frame,
811 struct sta_info **psta)
813 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
814 struct sta_priv *pstapriv = &adapter->stapriv;
815 struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
816 u8 *ptr = precv_frame->pkt->data;
817 unsigned char *mybssid = get_bssid(pmlmepriv);
820 if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
821 /* For AP mode, RA = BSSID, TX = STA(SRC_ADDR), A3 = DST_ADDR */
822 if (memcmp(pattrib->bssid, mybssid, ETH_ALEN)) {
827 *psta = rtw_get_stainfo(pstapriv, pattrib->src);
829 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("can't get psta under AP_MODE; drop pkt\n"));
830 DBG_88E("issue_deauth to sta=%pM for the reason(7)\n", (pattrib->src));
832 issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
834 ret = RTW_RX_HANDLED;
838 process_pwrbit_data(adapter, precv_frame);
840 if ((GetFrameSubType(ptr) & WIFI_QOS_DATA_TYPE) == WIFI_QOS_DATA_TYPE)
841 process_wmmps_data(adapter, precv_frame);
843 if (GetFrameSubType(ptr) & BIT(6)) {
844 /* No data, will not indicate to upper layer, temporily count it here */
845 count_rx_stats(adapter, precv_frame, *psta);
846 ret = RTW_RX_HANDLED;
850 u8 *myhwaddr = myid(&adapter->eeprompriv);
852 if (memcmp(pattrib->ra, myhwaddr, ETH_ALEN)) {
853 ret = RTW_RX_HANDLED;
856 DBG_88E("issue_deauth to sta=%pM for the reason(7)\n", (pattrib->src));
857 issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
858 ret = RTW_RX_HANDLED;
867 static int validate_recv_ctrl_frame(struct adapter *padapter,
868 struct recv_frame *precv_frame)
870 #ifdef CONFIG_88EU_AP_MODE
871 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
872 struct sta_priv *pstapriv = &padapter->stapriv;
873 u8 *pframe = precv_frame->pkt->data;
875 if (GetFrameType(pframe) != WIFI_CTRL_TYPE)
878 /* receive the frames that ra(a1) is my address */
879 if (memcmp(GetAddr1Ptr(pframe), myid(&padapter->eeprompriv), ETH_ALEN))
882 /* only handle ps-poll */
883 if (GetFrameSubType(pframe) == WIFI_PSPOLL) {
886 struct sta_info *psta = NULL;
888 aid = GetAid(pframe);
889 psta = rtw_get_stainfo(pstapriv, GetAddr2Ptr(pframe));
891 if ((psta == NULL) || (psta->aid != aid))
894 /* for rx pkt statistics */
895 psta->sta_stats.rx_ctrl_pkts++;
897 switch (pattrib->priority) {
900 wmmps_ac = psta->uapsd_bk&BIT(0);
904 wmmps_ac = psta->uapsd_vi&BIT(0);
908 wmmps_ac = psta->uapsd_vo&BIT(0);
913 wmmps_ac = psta->uapsd_be&BIT(0);
920 if (psta->state & WIFI_STA_ALIVE_CHK_STATE) {
921 DBG_88E("%s alive check-rx ps-poll\n", __func__);
922 psta->expire_to = pstapriv->expire_to;
923 psta->state ^= WIFI_STA_ALIVE_CHK_STATE;
926 if ((psta->state&WIFI_SLEEP_STATE) && (pstapriv->sta_dz_bitmap&BIT(psta->aid))) {
927 struct list_head *xmitframe_plist, *xmitframe_phead;
928 struct xmit_frame *pxmitframe = NULL;
930 spin_lock_bh(&psta->sleep_q.lock);
932 xmitframe_phead = get_list_head(&psta->sleep_q);
933 xmitframe_plist = xmitframe_phead->next;
935 if (xmitframe_phead != xmitframe_plist) {
936 pxmitframe = list_entry(xmitframe_plist, struct xmit_frame, list);
938 xmitframe_plist = xmitframe_plist->next;
940 list_del_init(&pxmitframe->list);
944 if (psta->sleepq_len > 0)
945 pxmitframe->attrib.mdata = 1;
947 pxmitframe->attrib.mdata = 0;
949 pxmitframe->attrib.triggered = 1;
951 spin_unlock_bh(&psta->sleep_q.lock);
952 if (rtw_hal_xmit(padapter, pxmitframe) == true)
953 rtw_os_xmit_complete(padapter, pxmitframe);
954 spin_lock_bh(&psta->sleep_q.lock);
956 if (psta->sleepq_len == 0) {
957 pstapriv->tim_bitmap &= ~BIT(psta->aid);
959 /* update BCN for TIM IE */
960 /* update_BCNTIM(padapter); */
961 update_beacon(padapter, _TIM_IE_, NULL, false);
964 if (pstapriv->tim_bitmap&BIT(psta->aid)) {
965 if (psta->sleepq_len == 0) {
966 DBG_88E("no buffered packets to xmit\n");
968 /* issue nulldata with More data bit = 0 to indicate we have no buffered packets */
969 issue_nulldata(padapter, psta->hwaddr, 0, 0, 0);
971 DBG_88E("error!psta->sleepq_len=%d\n", psta->sleepq_len);
972 psta->sleepq_len = 0;
975 pstapriv->tim_bitmap &= ~BIT(psta->aid);
977 /* update BCN for TIM IE */
978 /* update_BCNTIM(padapter); */
979 update_beacon(padapter, _TIM_IE_, NULL, false);
983 spin_unlock_bh(&psta->sleep_q.lock);
992 struct recv_frame *recvframe_chk_defrag(struct adapter *padapter,
993 struct recv_frame *precv_frame);
995 static int validate_recv_mgnt_frame(struct adapter *padapter,
996 struct recv_frame *precv_frame)
998 struct sta_info *psta;
1000 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("+%s\n", __func__));
1002 precv_frame = recvframe_chk_defrag(padapter, precv_frame);
1004 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
1005 ("%s: fragment packet\n", __func__));
1009 /* for rx pkt statistics */
1010 psta = rtw_get_stainfo(&padapter->stapriv,
1011 GetAddr2Ptr(precv_frame->pkt->data));
1013 psta->sta_stats.rx_mgnt_pkts++;
1014 if (GetFrameSubType(precv_frame->pkt->data) == WIFI_BEACON) {
1015 psta->sta_stats.rx_beacon_pkts++;
1016 } else if (GetFrameSubType(precv_frame->pkt->data) == WIFI_PROBEREQ) {
1017 psta->sta_stats.rx_probereq_pkts++;
1018 } else if (GetFrameSubType(precv_frame->pkt->data) == WIFI_PROBERSP) {
1019 if (!memcmp(padapter->eeprompriv.mac_addr,
1020 GetAddr1Ptr(precv_frame->pkt->data), ETH_ALEN))
1021 psta->sta_stats.rx_probersp_pkts++;
1022 else if (is_multicast_ether_addr(GetAddr1Ptr(precv_frame->pkt->data)))
1023 psta->sta_stats.rx_probersp_bm_pkts++;
1025 psta->sta_stats.rx_probersp_uo_pkts++;
1029 mgt_dispatcher(padapter, precv_frame);
1034 static int validate_recv_data_frame(struct adapter *adapter,
1035 struct recv_frame *precv_frame)
1038 u8 *psa, *pda, *pbssid;
1039 struct sta_info *psta = NULL;
1040 u8 *ptr = precv_frame->pkt->data;
1041 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
1042 struct security_priv *psecuritypriv = &adapter->securitypriv;
1045 bretry = GetRetry(ptr);
1048 pbssid = get_hdr_bssid(ptr);
1055 memcpy(pattrib->dst, pda, ETH_ALEN);
1056 memcpy(pattrib->src, psa, ETH_ALEN);
1058 memcpy(pattrib->bssid, pbssid, ETH_ALEN);
1060 switch (pattrib->to_fr_ds) {
1062 memcpy(pattrib->ra, pda, ETH_ALEN);
1063 memcpy(pattrib->ta, psa, ETH_ALEN);
1064 ret = sta2sta_data_frame(adapter, precv_frame, &psta);
1067 memcpy(pattrib->ra, pda, ETH_ALEN);
1068 memcpy(pattrib->ta, pbssid, ETH_ALEN);
1069 ret = ap2sta_data_frame(adapter, precv_frame, &psta);
1072 memcpy(pattrib->ra, pbssid, ETH_ALEN);
1073 memcpy(pattrib->ta, psa, ETH_ALEN);
1074 ret = sta2ap_data_frame(adapter, precv_frame, &psta);
1077 memcpy(pattrib->ra, GetAddr1Ptr(ptr), ETH_ALEN);
1078 memcpy(pattrib->ta, GetAddr2Ptr(ptr), ETH_ALEN);
1080 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" case 3\n"));
1089 else if (ret == RTW_RX_HANDLED)
1093 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" after to_fr_ds_chk; psta==NULL\n"));
1098 /* psta->rssi = prxcmd->rssi; */
1099 /* psta->signal_quality = prxcmd->sq; */
1100 precv_frame->psta = psta;
1103 pattrib->ack_policy = 0;
1104 /* parsing QC field */
1105 if (pattrib->qos == 1) {
1106 pattrib->priority = GetPriority((ptr + 24));
1107 pattrib->ack_policy = GetAckpolicy((ptr + 24));
1108 pattrib->amsdu = GetAMsdu((ptr + 24));
1109 pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 32 : 26;
1111 if (pattrib->priority != 0 && pattrib->priority != 3)
1112 adapter->recvpriv.bIsAnyNonBEPkts = true;
1114 pattrib->priority = 0;
1115 pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 30 : 24;
1118 if (pattrib->order)/* HT-CTRL 11n */
1119 pattrib->hdrlen += 4;
1121 precv_frame->preorder_ctrl = &psta->recvreorder_ctrl[pattrib->priority];
1123 /* decache, drop duplicate recv packets */
1124 if (recv_decache(precv_frame, bretry, &psta->sta_recvpriv.rxcache) == _FAIL) {
1125 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("decache : drop pkt\n"));
1130 if (pattrib->privacy) {
1131 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("%s:pattrib->privacy=%x\n", __func__, pattrib->privacy));
1132 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)));
1134 GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, IS_MCAST(pattrib->ra));
1136 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n pattrib->encrypt=%d\n", pattrib->encrypt));
1138 SET_ICE_IV_LEN(pattrib->iv_len, pattrib->icv_len, pattrib->encrypt);
1140 pattrib->encrypt = 0;
1141 pattrib->iv_len = 0;
1142 pattrib->icv_len = 0;
1150 static int validate_recv_frame(struct adapter *adapter,
1151 struct recv_frame *precv_frame)
1153 /* shall check frame subtype, to / from ds, da, bssid */
1155 /* then call check if rx seq/frag. duplicated. */
1159 int retval = _SUCCESS;
1161 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
1162 u8 *ptr = precv_frame->pkt->data;
1163 u8 ver = (unsigned char)(*ptr)&0x3;
1164 struct mlme_ext_priv *pmlmeext = &adapter->mlmeextpriv;
1166 if (pmlmeext->sitesurvey_res.state == SCAN_PROCESS) {
1167 int ch_set_idx = rtw_ch_set_search_ch(pmlmeext->channel_set, rtw_get_oper_ch(adapter));
1169 if (ch_set_idx >= 0)
1170 pmlmeext->channel_set[ch_set_idx].rx_count++;
1173 /* add version chk */
1175 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_data_frame fail! (ver!=0)\n"));
1180 type = GetFrameType(ptr);
1181 subtype = GetFrameSubType(ptr); /* bit(7)~bit(2) */
1183 pattrib->to_fr_ds = get_tofr_ds(ptr);
1185 pattrib->frag_num = GetFragNum(ptr);
1186 pattrib->seq_num = GetSequence(ptr);
1188 pattrib->pw_save = GetPwrMgt(ptr);
1189 pattrib->mfrag = GetMFrag(ptr);
1190 pattrib->mdata = GetMData(ptr);
1191 pattrib->privacy = GetPrivacy(ptr);
1192 pattrib->order = GetOrder(ptr);
1194 /* Dump rx packets */
1195 rtw_hal_get_def_var(adapter, HAL_DEF_DBG_DUMP_RXPKT, &(bDumpRxPkt));
1196 if (bDumpRxPkt == 1) {/* dump all rx packets */
1197 if (_drv_err_ <= GlobalDebugLevel) {
1198 pr_info(DRIVER_PREFIX "#############################\n");
1199 print_hex_dump(KERN_INFO, DRIVER_PREFIX, DUMP_PREFIX_NONE,
1200 16, 1, ptr, 64, false);
1201 pr_info(DRIVER_PREFIX "#############################\n");
1203 } else if (bDumpRxPkt == 2) {
1204 if ((_drv_err_ <= GlobalDebugLevel) && (type == WIFI_MGT_TYPE)) {
1205 pr_info(DRIVER_PREFIX "#############################\n");
1206 print_hex_dump(KERN_INFO, DRIVER_PREFIX, DUMP_PREFIX_NONE,
1207 16, 1, ptr, 64, false);
1208 pr_info(DRIVER_PREFIX "#############################\n");
1210 } else if (bDumpRxPkt == 3) {
1211 if ((_drv_err_ <= GlobalDebugLevel) && (type == WIFI_DATA_TYPE)) {
1212 pr_info(DRIVER_PREFIX "#############################\n");
1213 print_hex_dump(KERN_INFO, DRIVER_PREFIX, DUMP_PREFIX_NONE,
1214 16, 1, ptr, 64, false);
1215 pr_info(DRIVER_PREFIX "#############################\n");
1219 case WIFI_MGT_TYPE: /* mgnt */
1220 retval = validate_recv_mgnt_frame(adapter, precv_frame);
1221 if (retval == _FAIL)
1222 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_mgnt_frame fail\n"));
1223 retval = _FAIL; /* only data frame return _SUCCESS */
1225 case WIFI_CTRL_TYPE: /* ctrl */
1226 retval = validate_recv_ctrl_frame(adapter, precv_frame);
1227 if (retval == _FAIL)
1228 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_ctrl_frame fail\n"));
1229 retval = _FAIL; /* only data frame return _SUCCESS */
1231 case WIFI_DATA_TYPE: /* data */
1232 LedControl8188eu(adapter, LED_CTL_RX);
1233 pattrib->qos = (subtype & BIT(7)) ? 1 : 0;
1234 retval = validate_recv_data_frame(adapter, precv_frame);
1235 if (retval == _FAIL) {
1236 struct recv_priv *precvpriv = &adapter->recvpriv;
1238 precvpriv->rx_drop++;
1242 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_data_frame fail! type= 0x%x\n", type));
1248 * This is the last moment before management and control frames get
1249 * discarded. So we need to forward them to the monitor now or never.
1251 * At the same time data frames can still be encrypted if software
1252 * decryption is in use. However, decryption can occur not until later
1253 * (see recv_func()).
1255 * Hence forward the frame to the monitor anyway to preserve the order
1256 * in which frames were received.
1258 rtl88eu_mon_recv_hook(adapter->pmondev, precv_frame);
1265 /* remove the wlanhdr and add the eth_hdr */
1267 static int wlanhdr_to_ethhdr(struct recv_frame *precvframe)
1274 struct ieee80211_snap_hdr *psnap;
1276 u8 *ptr = precvframe->pkt->data;
1277 struct rx_pkt_attrib *pattrib = &precvframe->attrib;
1279 if (pattrib->encrypt)
1280 skb_trim(precvframe->pkt, precvframe->pkt->len - pattrib->icv_len);
1282 psnap = (struct ieee80211_snap_hdr *)(ptr+pattrib->hdrlen + pattrib->iv_len);
1283 psnap_type = ptr+pattrib->hdrlen + pattrib->iv_len+SNAP_SIZE;
1284 /* convert hdr + possible LLC headers into Ethernet header */
1285 if ((!memcmp(psnap, rtw_rfc1042_header, SNAP_SIZE) &&
1286 (!memcmp(psnap_type, SNAP_ETH_TYPE_IPX, 2) == false) &&
1287 (!memcmp(psnap_type, SNAP_ETH_TYPE_APPLETALK_AARP, 2) == false)) ||
1288 !memcmp(psnap, rtw_bridge_tunnel_header, SNAP_SIZE)) {
1289 /* remove RFC1042 or Bridge-Tunnel encapsulation and replace EtherType */
1292 /* Leave Ethernet header part of hdr and full payload */
1296 rmv_len = pattrib->hdrlen + pattrib->iv_len + (bsnaphdr ? SNAP_SIZE : 0);
1297 len = precvframe->pkt->len - rmv_len;
1299 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
1300 ("\n===pattrib->hdrlen: %x, pattrib->iv_len:%x===\n\n", pattrib->hdrlen, pattrib->iv_len));
1302 memcpy(&be_tmp, ptr+rmv_len, 2);
1303 eth_type = ntohs(be_tmp); /* pattrib->ether_type */
1304 pattrib->eth_type = eth_type;
1306 ptr = skb_pull(precvframe->pkt, rmv_len - sizeof(struct ethhdr) + (bsnaphdr ? 2 : 0));
1310 memcpy(ptr, pattrib->dst, ETH_ALEN);
1311 memcpy(ptr+ETH_ALEN, pattrib->src, ETH_ALEN);
1314 be_tmp = htons(len);
1315 memcpy(ptr+12, &be_tmp, 2);
1321 /* perform defrag */
1322 static struct recv_frame *recvframe_defrag(struct adapter *adapter,
1323 struct __queue *defrag_q)
1325 struct list_head *plist, *phead;
1328 struct recv_frame *pfhdr, *pnfhdr;
1329 struct recv_frame *prframe, *pnextrframe;
1330 struct __queue *pfree_recv_queue;
1333 pfree_recv_queue = &adapter->recvpriv.free_recv_queue;
1335 phead = get_list_head(defrag_q);
1336 plist = phead->next;
1337 pfhdr = list_entry(plist, struct recv_frame, list);
1339 list_del_init(&(prframe->list));
1341 if (curfragnum != pfhdr->attrib.frag_num) {
1342 /* the first fragment number must be 0 */
1343 /* free the whole queue */
1344 rtw_free_recvframe(prframe, pfree_recv_queue);
1345 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
1352 plist = get_list_head(defrag_q);
1354 plist = plist->next;
1356 while (phead != plist) {
1357 pnfhdr = list_entry(plist, struct recv_frame, list);
1358 pnextrframe = pnfhdr;
1360 /* check the fragment sequence (2nd ~n fragment frame) */
1362 if (curfragnum != pnfhdr->attrib.frag_num) {
1363 /* the fragment number must be increasing (after decache) */
1364 /* release the defrag_q & prframe */
1365 rtw_free_recvframe(prframe, pfree_recv_queue);
1366 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
1372 /* copy the 2nd~n fragment frame's payload to the first fragment */
1373 /* get the 2nd~last fragment frame's payload */
1375 wlanhdr_offset = pnfhdr->attrib.hdrlen + pnfhdr->attrib.iv_len;
1377 skb_pull(pnextrframe->pkt, wlanhdr_offset);
1379 /* append to first fragment frame's tail (if privacy frame, pull the ICV) */
1380 skb_trim(prframe->pkt, prframe->pkt->len - pfhdr->attrib.icv_len);
1383 memcpy(skb_tail_pointer(pfhdr->pkt), pnfhdr->pkt->data,
1386 skb_put(prframe->pkt, pnfhdr->pkt->len);
1388 pfhdr->attrib.icv_len = pnfhdr->attrib.icv_len;
1389 plist = plist->next;
1392 /* free the defrag_q queue and return the prframe */
1393 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
1395 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("Performance defrag!!!!!\n"));
1400 /* check if need to defrag, if needed queue the frame to defrag_q */
1401 struct recv_frame *recvframe_chk_defrag(struct adapter *padapter,
1402 struct recv_frame *precv_frame)
1407 struct recv_frame *pfhdr;
1408 struct sta_info *psta;
1409 struct sta_priv *pstapriv;
1410 struct list_head *phead;
1411 struct recv_frame *prtnframe = NULL;
1412 struct __queue *pfree_recv_queue, *pdefrag_q;
1414 pstapriv = &padapter->stapriv;
1416 pfhdr = precv_frame;
1418 pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
1420 /* need to define struct of wlan header frame ctrl */
1421 ismfrag = pfhdr->attrib.mfrag;
1422 fragnum = pfhdr->attrib.frag_num;
1424 psta_addr = pfhdr->attrib.ta;
1425 psta = rtw_get_stainfo(pstapriv, psta_addr);
1427 u8 type = GetFrameType(pfhdr->pkt->data);
1429 if (type != WIFI_DATA_TYPE) {
1430 psta = rtw_get_bcmc_stainfo(padapter);
1431 pdefrag_q = &psta->sta_recvpriv.defrag_q;
1436 pdefrag_q = &psta->sta_recvpriv.defrag_q;
1439 if ((ismfrag == 0) && (fragnum == 0))
1440 prtnframe = precv_frame;/* isn't a fragment frame */
1443 /* 0~(n-1) fragment frame */
1444 /* enqueue to defraf_g */
1447 /* the first fragment */
1448 if (!list_empty(&pdefrag_q->queue))
1449 /* free current defrag_q */
1450 rtw_free_recvframe_queue(pdefrag_q, pfree_recv_queue);
1453 /* Then enqueue the 0~(n-1) fragment into the defrag_q */
1455 phead = get_list_head(pdefrag_q);
1456 list_add_tail(&pfhdr->list, phead);
1458 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("Enqueuq: ismfrag=%d, fragnum=%d\n", ismfrag, fragnum));
1462 /* can't find this ta's defrag_queue, so free this recv_frame */
1463 rtw_free_recvframe(precv_frame, pfree_recv_queue);
1465 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("Free because pdefrag_q==NULL: ismfrag=%d, fragnum=%d\n", ismfrag, fragnum));
1469 if ((ismfrag == 0) && (fragnum != 0)) {
1470 /* the last fragment frame */
1471 /* enqueue the last fragment */
1473 phead = get_list_head(pdefrag_q);
1474 list_add_tail(&pfhdr->list, phead);
1476 /* call recvframe_defrag to defrag */
1477 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("defrag: ismfrag=%d, fragnum=%d\n", ismfrag, fragnum));
1478 precv_frame = recvframe_defrag(padapter, pdefrag_q);
1479 prtnframe = precv_frame;
1481 /* can't find this ta's defrag_queue, so free this recv_frame */
1482 rtw_free_recvframe(precv_frame, pfree_recv_queue);
1484 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("Free because pdefrag_q==NULL: ismfrag=%d, fragnum=%d\n", ismfrag, fragnum));
1488 if ((prtnframe != NULL) && (prtnframe->attrib.privacy)) {
1489 /* after defrag we must check tkip mic code */
1490 if (recvframe_chkmic(padapter, prtnframe) == _FAIL) {
1491 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvframe_chkmic(padapter, prtnframe)==_FAIL\n"));
1492 rtw_free_recvframe(prtnframe, pfree_recv_queue);
1500 static int amsdu_to_msdu(struct adapter *padapter, struct recv_frame *prframe)
1502 int a_len, padding_len;
1503 u16 eth_type, nSubframe_Length;
1505 unsigned char *pdata;
1506 struct rx_pkt_attrib *pattrib;
1507 struct sk_buff *sub_skb, *subframes[MAX_SUBFRAME_COUNT];
1508 struct recv_priv *precvpriv = &padapter->recvpriv;
1509 struct __queue *pfree_recv_queue = &(precvpriv->free_recv_queue);
1512 pattrib = &prframe->attrib;
1514 skb_pull(prframe->pkt, prframe->attrib.hdrlen);
1516 if (prframe->attrib.iv_len > 0)
1517 skb_pull(prframe->pkt, prframe->attrib.iv_len);
1519 a_len = prframe->pkt->len;
1521 pdata = prframe->pkt->data;
1523 while (a_len > ETH_HLEN) {
1524 /* Offset 12 denote 2 mac address */
1525 nSubframe_Length = get_unaligned_be16(pdata + 12);
1527 if (a_len < (ETHERNET_HEADER_SIZE + nSubframe_Length)) {
1528 DBG_88E("nRemain_Length is %d and nSubframe_Length is : %d\n", a_len, nSubframe_Length);
1532 /* move the data point to data content */
1536 /* Allocate new skb for releasing to upper layer */
1537 sub_skb = dev_alloc_skb(nSubframe_Length + 12);
1539 DBG_88E("dev_alloc_skb() Fail!!! , nr_subframes=%d\n", nr_subframes);
1543 skb_reserve(sub_skb, 12);
1544 skb_put_data(sub_skb, pdata, nSubframe_Length);
1546 subframes[nr_subframes++] = sub_skb;
1548 if (nr_subframes >= MAX_SUBFRAME_COUNT) {
1549 DBG_88E("ParseSubframe(): Too many Subframes! Packets dropped!\n");
1553 pdata += nSubframe_Length;
1554 a_len -= nSubframe_Length;
1556 padding_len = 4 - ((nSubframe_Length + ETH_HLEN) & (4-1));
1557 if (padding_len == 4)
1560 if (a_len < padding_len)
1563 pdata += padding_len;
1564 a_len -= padding_len;
1568 for (i = 0; i < nr_subframes; i++) {
1569 sub_skb = subframes[i];
1570 /* convert hdr + possible LLC headers into Ethernet header */
1571 eth_type = get_unaligned_be16(&sub_skb->data[6]);
1572 if (sub_skb->len >= 8 &&
1573 ((!memcmp(sub_skb->data, rtw_rfc1042_header, SNAP_SIZE) &&
1574 eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) ||
1575 !memcmp(sub_skb->data, rtw_bridge_tunnel_header, SNAP_SIZE))) {
1576 /* remove RFC1042 or Bridge-Tunnel encapsulation and replace EtherType */
1577 skb_pull(sub_skb, SNAP_SIZE);
1578 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN);
1579 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst, ETH_ALEN);
1582 /* Leave Ethernet header part of hdr and full payload */
1583 len = htons(sub_skb->len);
1584 memcpy(skb_push(sub_skb, 2), &len, 2);
1585 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN);
1586 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst, ETH_ALEN);
1589 /* Indicate the packets to upper layer */
1590 /* Insert NAT2.5 RX here! */
1591 sub_skb->protocol = eth_type_trans(sub_skb, padapter->pnetdev);
1592 sub_skb->dev = padapter->pnetdev;
1594 sub_skb->ip_summed = CHECKSUM_NONE;
1600 rtw_free_recvframe(prframe, pfree_recv_queue);/* free this recv_frame */
1605 static int check_indicate_seq(struct recv_reorder_ctrl *preorder_ctrl, u16 seq_num)
1607 u8 wsize = preorder_ctrl->wsize_b;
1608 u16 wend = (preorder_ctrl->indicate_seq + wsize - 1) & 0xFFF;/* 4096; */
1610 /* Rx Reorder initialize condition. */
1611 if (preorder_ctrl->indicate_seq == 0xFFFF)
1612 preorder_ctrl->indicate_seq = seq_num;
1614 /* Drop out the packet which SeqNum is smaller than WinStart */
1615 if (SN_LESS(seq_num, preorder_ctrl->indicate_seq))
1619 /* Sliding window manipulation. Conditions includes: */
1620 /* 1. Incoming SeqNum is equal to WinStart =>Window shift 1 */
1621 /* 2. Incoming SeqNum is larger than the WinEnd => Window shift N */
1623 if (SN_EQUAL(seq_num, preorder_ctrl->indicate_seq)) {
1624 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF;
1625 } else if (SN_LESS(wend, seq_num)) {
1626 if (seq_num >= (wsize - 1))
1627 preorder_ctrl->indicate_seq = seq_num + 1 - wsize;
1629 preorder_ctrl->indicate_seq = 0xFFF - (wsize - (seq_num + 1)) + 1;
1635 static int enqueue_reorder_recvframe(struct recv_reorder_ctrl *preorder_ctrl,
1636 struct recv_frame *prframe)
1638 struct rx_pkt_attrib *pattrib = &prframe->attrib;
1639 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
1640 struct list_head *phead, *plist;
1641 struct recv_frame *hdr;
1642 struct rx_pkt_attrib *pnextattrib;
1644 phead = get_list_head(ppending_recvframe_queue);
1645 plist = phead->next;
1647 while (phead != plist) {
1648 hdr = list_entry(plist, struct recv_frame, list);
1649 pnextattrib = &hdr->attrib;
1651 if (SN_LESS(pnextattrib->seq_num, pattrib->seq_num))
1652 plist = plist->next;
1653 else if (SN_EQUAL(pnextattrib->seq_num, pattrib->seq_num))
1659 list_del_init(&(prframe->list));
1661 list_add_tail(&(prframe->list), plist);
1665 static int recv_indicatepkts_in_order(struct adapter *padapter, struct recv_reorder_ctrl *preorder_ctrl, int bforced)
1667 struct list_head *phead, *plist;
1668 struct recv_frame *prframe;
1669 struct recv_frame *prhdr;
1670 struct rx_pkt_attrib *pattrib;
1671 int bPktInBuf = false;
1672 struct recv_priv *precvpriv = &padapter->recvpriv;
1673 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
1675 phead = get_list_head(ppending_recvframe_queue);
1676 plist = phead->next;
1678 /* Handling some condition for forced indicate case. */
1680 if (list_empty(phead))
1683 prhdr = list_entry(plist, struct recv_frame, list);
1684 pattrib = &prhdr->attrib;
1685 preorder_ctrl->indicate_seq = pattrib->seq_num;
1688 /* Prepare indication list and indication. */
1689 /* Check if there is any packet need indicate. */
1690 while (!list_empty(phead)) {
1691 prhdr = list_entry(plist, struct recv_frame, list);
1693 pattrib = &prframe->attrib;
1695 if (!SN_LESS(preorder_ctrl->indicate_seq, pattrib->seq_num)) {
1696 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
1697 ("%s: indicate=%d seq=%d amsdu=%d\n",
1698 __func__, preorder_ctrl->indicate_seq, pattrib->seq_num, pattrib->amsdu));
1699 plist = plist->next;
1700 list_del_init(&(prframe->list));
1702 if (SN_EQUAL(preorder_ctrl->indicate_seq, pattrib->seq_num))
1703 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF;
1705 /* Set this as a lock to make sure that only one thread is indicating packet. */
1707 /* indicate this recv_frame */
1708 if (!pattrib->amsdu) {
1709 if ((!padapter->bDriverStopped) &&
1710 (!padapter->bSurpriseRemoved))
1711 rtw_recv_indicatepkt(padapter, prframe);/* indicate this recv_frame */
1712 } else if (pattrib->amsdu == 1) {
1713 if (amsdu_to_msdu(padapter, prframe) != _SUCCESS)
1714 rtw_free_recvframe(prframe, &precvpriv->free_recv_queue);
1716 /* error condition; */
1719 /* Update local variables. */
1729 static int recv_indicatepkt_reorder(struct adapter *padapter,
1730 struct recv_frame *prframe)
1732 int retval = _SUCCESS;
1733 struct rx_pkt_attrib *pattrib = &prframe->attrib;
1734 struct recv_reorder_ctrl *preorder_ctrl = prframe->preorder_ctrl;
1735 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
1737 if (!pattrib->amsdu) {
1739 wlanhdr_to_ethhdr(prframe);
1741 if ((pattrib->qos != 1) || (pattrib->eth_type == 0x0806) ||
1742 (pattrib->ack_policy != 0)) {
1743 if ((!padapter->bDriverStopped) &&
1744 (!padapter->bSurpriseRemoved)) {
1745 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("@@@@ %s -recv_func recv_indicatepkt\n", __func__));
1747 rtw_recv_indicatepkt(padapter, prframe);
1754 if (!preorder_ctrl->enable) {
1755 /* indicate this recv_frame */
1756 preorder_ctrl->indicate_seq = pattrib->seq_num;
1757 rtw_recv_indicatepkt(padapter, prframe);
1759 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096;
1762 } else if (pattrib->amsdu == 1) { /* temp filter -> means didn't support A-MSDUs in a A-MPDU */
1763 if (!preorder_ctrl->enable) {
1764 preorder_ctrl->indicate_seq = pattrib->seq_num;
1765 retval = amsdu_to_msdu(padapter, prframe);
1767 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096;
1772 spin_lock_bh(&ppending_recvframe_queue->lock);
1774 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
1775 ("%s: indicate=%d seq=%d\n", __func__,
1776 preorder_ctrl->indicate_seq, pattrib->seq_num));
1778 /* s2. check if winstart_b(indicate_seq) needs to been updated */
1779 if (!check_indicate_seq(preorder_ctrl, pattrib->seq_num)) {
1780 rtw_recv_indicatepkt(padapter, prframe);
1782 spin_unlock_bh(&ppending_recvframe_queue->lock);
1787 /* s3. Insert all packet into Reorder Queue to maintain its ordering. */
1788 if (!enqueue_reorder_recvframe(preorder_ctrl, prframe))
1792 /* Indication process. */
1793 /* After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets */
1794 /* with the SeqNum smaller than latest WinStart and buffer other packets. */
1796 /* For Rx Reorder condition: */
1797 /* 1. All packets with SeqNum smaller than WinStart => Indicate */
1798 /* 2. All packets with SeqNum larger than or equal to WinStart => Buffer it. */
1801 /* recv_indicatepkts_in_order(padapter, preorder_ctrl, true); */
1802 if (recv_indicatepkts_in_order(padapter, preorder_ctrl, false)) {
1803 mod_timer(&preorder_ctrl->reordering_ctrl_timer,
1804 jiffies + msecs_to_jiffies(REORDER_WAIT_TIME));
1805 spin_unlock_bh(&ppending_recvframe_queue->lock);
1807 spin_unlock_bh(&ppending_recvframe_queue->lock);
1808 del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
1817 spin_unlock_bh(&ppending_recvframe_queue->lock);
1822 void rtw_reordering_ctrl_timeout_handler(struct timer_list *t)
1824 struct recv_reorder_ctrl *preorder_ctrl = from_timer(preorder_ctrl, t,
1825 reordering_ctrl_timer);
1826 struct adapter *padapter = preorder_ctrl->padapter;
1827 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
1829 if (padapter->bDriverStopped || padapter->bSurpriseRemoved)
1832 spin_lock_bh(&ppending_recvframe_queue->lock);
1834 if (recv_indicatepkts_in_order(padapter, preorder_ctrl, true) == true)
1835 mod_timer(&preorder_ctrl->reordering_ctrl_timer,
1836 jiffies + msecs_to_jiffies(REORDER_WAIT_TIME));
1838 spin_unlock_bh(&ppending_recvframe_queue->lock);
1841 static int process_recv_indicatepkts(struct adapter *padapter,
1842 struct recv_frame *prframe)
1844 int retval = _SUCCESS;
1845 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
1846 struct ht_priv *phtpriv = &pmlmepriv->htpriv;
1848 if (phtpriv->ht_option) { /* B/G/N Mode */
1849 if (recv_indicatepkt_reorder(padapter, prframe) != _SUCCESS) {
1850 /* including perform A-MPDU Rx Ordering Buffer Control */
1851 if ((!padapter->bDriverStopped) &&
1852 (!padapter->bSurpriseRemoved)) {
1857 } else { /* B/G mode */
1858 retval = wlanhdr_to_ethhdr(prframe);
1859 if (retval != _SUCCESS) {
1860 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("wlanhdr_to_ethhdr: drop pkt\n"));
1864 if ((!padapter->bDriverStopped) &&
1865 (!padapter->bSurpriseRemoved)) {
1866 /* indicate this recv_frame */
1867 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("@@@@ %s- recv_func recv_indicatepkt\n", __func__));
1868 rtw_recv_indicatepkt(padapter, prframe);
1870 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("@@@@ %s- recv_func free_indicatepkt\n", __func__));
1872 RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("recv_func:bDriverStopped(%d) OR bSurpriseRemoved(%d)", padapter->bDriverStopped, padapter->bSurpriseRemoved));
1881 static int recv_func_prehandle(struct adapter *padapter,
1882 struct recv_frame *rframe)
1885 struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
1887 /* check the frame crtl field and decache */
1888 ret = validate_recv_frame(padapter, rframe);
1889 if (ret != _SUCCESS) {
1890 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("recv_func: validate_recv_frame fail! drop pkt\n"));
1891 rtw_free_recvframe(rframe, pfree_recv_queue);/* free this recv_frame */
1899 static int recv_func_posthandle(struct adapter *padapter,
1900 struct recv_frame *prframe)
1903 struct recv_frame *orig_prframe = prframe;
1904 struct recv_priv *precvpriv = &padapter->recvpriv;
1905 struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
1908 LedControl8188eu(padapter, LED_CTL_RX);
1910 prframe = decryptor(padapter, prframe);
1912 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("decryptor: drop pkt\n"));
1914 goto _recv_data_drop;
1917 prframe = recvframe_chk_defrag(padapter, prframe);
1919 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvframe_chk_defrag: drop pkt\n"));
1920 goto _recv_data_drop;
1923 prframe = portctrl(padapter, prframe);
1925 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("portctrl: drop pkt\n"));
1927 goto _recv_data_drop;
1930 count_rx_stats(padapter, prframe, NULL);
1932 ret = process_recv_indicatepkts(padapter, prframe);
1933 if (ret != _SUCCESS) {
1934 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recv_func: process_recv_indicatepkts fail!\n"));
1935 rtw_free_recvframe(orig_prframe, pfree_recv_queue);/* free this recv_frame */
1936 goto _recv_data_drop;
1941 precvpriv->rx_drop++;
1945 static int recv_func(struct adapter *padapter, struct recv_frame *rframe)
1948 struct rx_pkt_attrib *prxattrib = &rframe->attrib;
1949 struct security_priv *psecuritypriv = &padapter->securitypriv;
1950 struct mlme_priv *mlmepriv = &padapter->mlmepriv;
1952 /* check if need to handle uc_swdec_pending_queue*/
1953 if (check_fwstate(mlmepriv, WIFI_STATION_STATE) && psecuritypriv->busetkipkey) {
1954 struct recv_frame *pending_frame;
1956 while ((pending_frame = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue))) {
1957 if (recv_func_posthandle(padapter, pending_frame) == _SUCCESS)
1958 DBG_88E("%s: dequeue uc_swdec_pending_queue\n", __func__);
1962 ret = recv_func_prehandle(padapter, rframe);
1964 if (ret == _SUCCESS) {
1965 /* check if need to enqueue into uc_swdec_pending_queue*/
1966 if (check_fwstate(mlmepriv, WIFI_STATION_STATE) &&
1967 !IS_MCAST(prxattrib->ra) && prxattrib->encrypt > 0 &&
1968 prxattrib->bdecrypted == 0 &&
1969 !is_wep_enc(psecuritypriv->dot11PrivacyAlgrthm) &&
1970 !psecuritypriv->busetkipkey) {
1971 rtw_enqueue_recvframe(rframe, &padapter->recvpriv.uc_swdec_pending_queue);
1972 DBG_88E("%s: no key, enqueue uc_swdec_pending_queue\n", __func__);
1976 ret = recv_func_posthandle(padapter, rframe);
1983 s32 rtw_recv_entry(struct recv_frame *precvframe)
1985 struct adapter *padapter;
1986 struct recv_priv *precvpriv;
1989 padapter = precvframe->adapter;
1991 precvpriv = &padapter->recvpriv;
1993 ret = recv_func(padapter, precvframe);
1995 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("%s: recv_func return fail!!!\n", __func__));
1996 goto _recv_entry_drop;
1999 precvpriv->rx_pkts++;
2007 static void rtw_signal_stat_timer_hdl(struct timer_list *t)
2009 struct adapter *adapter =
2010 from_timer(adapter, t, recvpriv.signal_stat_timer);
2011 struct recv_priv *recvpriv = &adapter->recvpriv;
2014 u8 avg_signal_strength = 0;
2015 u8 avg_signal_qual = 0;
2016 u8 _alpha = 3; /* this value is based on converging_constant = 5000 and sampling_interval = 1000 */
2018 if (recvpriv->signal_strength_data.update_req == 0) {
2019 /* update_req is clear, means we got rx */
2020 avg_signal_strength = recvpriv->signal_strength_data.avg_val;
2021 /* after avg_vals are acquired, we can re-stat the signal
2024 recvpriv->signal_strength_data.update_req = 1;
2027 if (recvpriv->signal_qual_data.update_req == 0) {
2028 /* update_req is clear, means we got rx */
2029 avg_signal_qual = recvpriv->signal_qual_data.avg_val;
2030 /* after avg_vals are acquired, we can re-stat the signal
2033 recvpriv->signal_qual_data.update_req = 1;
2036 /* update value of signal_strength, rssi, signal_qual */
2037 if (check_fwstate(&adapter->mlmepriv, _FW_UNDER_SURVEY) == false) {
2038 tmp_s = avg_signal_strength +
2039 (_alpha - 1) * recvpriv->signal_strength;
2040 tmp_s = DIV_ROUND_UP(tmp_s, _alpha);
2044 tmp_q = avg_signal_qual +
2045 (_alpha - 1) * recvpriv->signal_qual;
2046 tmp_q = DIV_ROUND_UP(tmp_q, _alpha);
2050 recvpriv->signal_strength = tmp_s;
2051 recvpriv->rssi = (s8)translate_percentage_to_dbm(tmp_s);
2052 recvpriv->signal_qual = tmp_q;
2055 rtw_set_signal_stat_timer(recvpriv);