Backports v4.19.24

Backports generated by toradex backports 515a1fa55cda2b1d952872e1786857481bd54fcc
against mainline kernel tag v4.19.24

Signed-off-by: Dominik Sliwa <dominik.sliwa@toradex.com>

1 files changed, 2680 insertions, 0 deletions

diff --git a/drivers/staging/rtl8723bs/core/rtw_recv.c b/drivers/staging/rtl8723bs/core/rtw_recv.c
new file mode 100644
index 0000000..02f821d
--- /dev/null
+++ b/drivers/staging/rtl8723bs/core/rtw_recv.c
@@ -0,0 +1,2680 @@
+// SPDX-License-Identifier: GPL-2.0
+/******************************************************************************
+ *
+ * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
+ *
+ ******************************************************************************/
+#define _RTW_RECV_C_
+
+#include <drv_types.h>
+#include <rtw_debug.h>
+#include <linux/jiffies.h>
+#include <rtw_recv.h>
+
+static u8 SNAP_ETH_TYPE_IPX[2] = {0x81, 0x37};
+static u8 SNAP_ETH_TYPE_APPLETALK_AARP[2] = {0x80, 0xf3};
+
+u8 rtw_rfc1042_header[] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
+/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
+u8 rtw_bridge_tunnel_header[] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
+
+static void rtw_signal_stat_timer_hdl(struct timer_list *t);
+
+void _rtw_init_sta_recv_priv(struct sta_recv_priv *psta_recvpriv)
+{
+	memset((u8 *)psta_recvpriv, 0, sizeof(struct sta_recv_priv));
+
+	spin_lock_init(&psta_recvpriv->lock);
+
+	/* for (i = 0; i<MAX_RX_NUMBLKS; i++) */
+	/* 	_rtw_init_queue(&psta_recvpriv->blk_strms[i]); */
+
+	_rtw_init_queue(&psta_recvpriv->defrag_q);
+}
+
+sint _rtw_init_recv_priv(struct recv_priv *precvpriv, struct adapter *padapter)
+{
+	sint i;
+	union recv_frame *precvframe;
+	sint	res = _SUCCESS;
+
+	spin_lock_init(&precvpriv->lock);
+
+	_rtw_init_queue(&precvpriv->free_recv_queue);
+	_rtw_init_queue(&precvpriv->recv_pending_queue);
+	_rtw_init_queue(&precvpriv->uc_swdec_pending_queue);
+
+	precvpriv->adapter = padapter;
+
+	precvpriv->free_recvframe_cnt = NR_RECVFRAME;
+
+	precvpriv->pallocated_frame_buf = vzalloc(NR_RECVFRAME * sizeof(union recv_frame) + RXFRAME_ALIGN_SZ);
+
+	if (precvpriv->pallocated_frame_buf == NULL) {
+		res = _FAIL;
+		goto exit;
+	}
+
+	precvpriv->precv_frame_buf = (u8 *)N_BYTE_ALIGMENT((SIZE_PTR)(precvpriv->pallocated_frame_buf), RXFRAME_ALIGN_SZ);
+	/* precvpriv->precv_frame_buf = precvpriv->pallocated_frame_buf + RXFRAME_ALIGN_SZ - */
+	/* 						((SIZE_PTR) (precvpriv->pallocated_frame_buf) &(RXFRAME_ALIGN_SZ-1)); */
+
+	precvframe = (union recv_frame *) precvpriv->precv_frame_buf;
+
+
+	for (i = 0; i < NR_RECVFRAME; i++) {
+		INIT_LIST_HEAD(&(precvframe->u.list));
+
+		list_add_tail(&(precvframe->u.list), &(precvpriv->free_recv_queue.queue));
+
+		res = rtw_os_recv_resource_alloc(padapter, precvframe);
+
+		precvframe->u.hdr.len = 0;
+
+		precvframe->u.hdr.adapter = padapter;
+		precvframe++;
+
+	}
+
+	res = rtw_hal_init_recv_priv(padapter);
+
+	timer_setup(&precvpriv->signal_stat_timer, rtw_signal_stat_timer_hdl,
+		    0);
+
+	precvpriv->signal_stat_sampling_interval = 2000; /* ms */
+
+	rtw_set_signal_stat_timer(precvpriv);
+
+exit:
+	return res;
+}
+
+void _rtw_free_recv_priv(struct recv_priv *precvpriv)
+{
+	struct adapter	*padapter = precvpriv->adapter;
+
+	rtw_free_uc_swdec_pending_queue(padapter);
+
+	rtw_os_recv_resource_free(precvpriv);
+
+	if (precvpriv->pallocated_frame_buf)
+		vfree(precvpriv->pallocated_frame_buf);
+
+	rtw_hal_free_recv_priv(padapter);
+}
+
+union recv_frame *_rtw_alloc_recvframe(struct __queue *pfree_recv_queue)
+{
+
+	union recv_frame  *precvframe;
+	struct list_head	*plist, *phead;
+	struct adapter *padapter;
+	struct recv_priv *precvpriv;
+
+	if (list_empty(&pfree_recv_queue->queue))
+		precvframe = NULL;
+	else{
+		phead = get_list_head(pfree_recv_queue);
+
+		plist = get_next(phead);
+
+		precvframe = (union recv_frame *)plist;
+
+		list_del_init(&precvframe->u.hdr.list);
+		padapter = precvframe->u.hdr.adapter;
+		if (padapter != NULL) {
+			precvpriv = &padapter->recvpriv;
+			if (pfree_recv_queue == &precvpriv->free_recv_queue)
+				precvpriv->free_recvframe_cnt--;
+		}
+	}
+	return precvframe;
+}
+
+union recv_frame *rtw_alloc_recvframe(struct __queue *pfree_recv_queue)
+{
+	union recv_frame  *precvframe;
+
+	spin_lock_bh(&pfree_recv_queue->lock);
+
+	precvframe = _rtw_alloc_recvframe(pfree_recv_queue);
+
+	spin_unlock_bh(&pfree_recv_queue->lock);
+
+	return precvframe;
+}
+
+int rtw_free_recvframe(union recv_frame *precvframe, struct __queue *pfree_recv_queue)
+{
+	struct adapter *padapter = precvframe->u.hdr.adapter;
+	struct recv_priv *precvpriv = &padapter->recvpriv;
+
+	rtw_os_free_recvframe(precvframe);
+
+
+	spin_lock_bh(&pfree_recv_queue->lock);
+
+	list_del_init(&(precvframe->u.hdr.list));
+
+	precvframe->u.hdr.len = 0;
+
+	list_add_tail(&(precvframe->u.hdr.list), get_list_head(pfree_recv_queue));
+
+	if (padapter != NULL) {
+		if (pfree_recv_queue == &precvpriv->free_recv_queue)
+				precvpriv->free_recvframe_cnt++;
+	}
+	spin_unlock_bh(&pfree_recv_queue->lock);
+	return _SUCCESS;
+}
+
+
+
+
+sint _rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue)
+{
+
+	struct adapter *padapter = precvframe->u.hdr.adapter;
+	struct recv_priv *precvpriv = &padapter->recvpriv;
+
+	/* INIT_LIST_HEAD(&(precvframe->u.hdr.list)); */
+	list_del_init(&(precvframe->u.hdr.list));
+
+
+	list_add_tail(&(precvframe->u.hdr.list), get_list_head(queue));
+
+	if (padapter != NULL)
+		if (queue == &precvpriv->free_recv_queue)
+			precvpriv->free_recvframe_cnt++;
+
+	return _SUCCESS;
+}
+
+sint rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue)
+{
+	sint ret;
+
+	/* _spinlock(&pfree_recv_queue->lock); */
+	spin_lock_bh(&queue->lock);
+	ret = _rtw_enqueue_recvframe(precvframe, queue);
+	/* spin_unlock(&pfree_recv_queue->lock); */
+	spin_unlock_bh(&queue->lock);
+
+	return ret;
+}
+
+/*
+sint	rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue)
+{
+	return rtw_free_recvframe(precvframe, queue);
+}
+*/
+
+
+
+
+/*
+caller : defrag ; recvframe_chk_defrag in recv_thread  (passive)
+pframequeue: defrag_queue : will be accessed in recv_thread  (passive)
+
+using spinlock to protect
+
+*/
+
+void rtw_free_recvframe_queue(struct __queue *pframequeue,  struct __queue *pfree_recv_queue)
+{
+	union	recv_frame	*precvframe;
+	struct list_head	*plist, *phead;
+
+	spin_lock(&pframequeue->lock);
+
+	phead = get_list_head(pframequeue);
+	plist = get_next(phead);
+
+	while (phead != plist) {
+		precvframe = (union recv_frame *)plist;
+
+		plist = get_next(plist);
+
+		rtw_free_recvframe(precvframe, pfree_recv_queue);
+	}
+
+	spin_unlock(&pframequeue->lock);
+}
+
+u32 rtw_free_uc_swdec_pending_queue(struct adapter *adapter)
+{
+	u32 cnt = 0;
+	union recv_frame *pending_frame;
+	while ((pending_frame = rtw_alloc_recvframe(&adapter->recvpriv.uc_swdec_pending_queue))) {
+		rtw_free_recvframe(pending_frame, &adapter->recvpriv.free_recv_queue);
+		cnt++;
+	}
+
+	if (cnt)
+		DBG_871X(FUNC_ADPT_FMT" dequeue %d\n", FUNC_ADPT_ARG(adapter), cnt);
+
+	return cnt;
+}
+
+
+sint rtw_enqueue_recvbuf_to_head(struct recv_buf *precvbuf, struct __queue *queue)
+{
+	spin_lock_bh(&queue->lock);
+
+	list_del_init(&precvbuf->list);
+	list_add(&precvbuf->list, get_list_head(queue));
+
+	spin_unlock_bh(&queue->lock);
+
+	return _SUCCESS;
+}
+
+sint rtw_enqueue_recvbuf(struct recv_buf *precvbuf, struct __queue *queue)
+{
+	spin_lock_bh(&queue->lock);
+
+	list_del_init(&precvbuf->list);
+
+	list_add_tail(&precvbuf->list, get_list_head(queue));
+	spin_unlock_bh(&queue->lock);
+	return _SUCCESS;
+
+}
+
+struct recv_buf *rtw_dequeue_recvbuf(struct __queue *queue)
+{
+	struct recv_buf *precvbuf;
+	struct list_head	*plist, *phead;
+
+	spin_lock_bh(&queue->lock);
+
+	if (list_empty(&queue->queue))
+		precvbuf = NULL;
+	else{
+		phead = get_list_head(queue);
+
+		plist = get_next(phead);
+
+		precvbuf = LIST_CONTAINOR(plist, struct recv_buf, list);
+
+		list_del_init(&precvbuf->list);
+
+	}
+
+	spin_unlock_bh(&queue->lock);
+
+	return precvbuf;
+
+}
+
+sint recvframe_chkmic(struct adapter *adapter,  union recv_frame *precvframe);
+sint recvframe_chkmic(struct adapter *adapter,  union recv_frame *precvframe)
+{
+
+	sint	i, res = _SUCCESS;
+	u32 datalen;
+	u8 miccode[8];
+	u8 bmic_err = false, brpt_micerror = true;
+	u8 *pframe, *payload, *pframemic;
+	u8 *mickey;
+	/* u8 *iv, rxdata_key_idx = 0; */
+	struct	sta_info 	*stainfo;
+	struct	rx_pkt_attrib	*prxattrib = &precvframe->u.hdr.attrib;
+	struct	security_priv *psecuritypriv = &adapter->securitypriv;
+
+	struct mlme_ext_priv *pmlmeext = &adapter->mlmeextpriv;
+	struct mlme_ext_info *pmlmeinfo = &(pmlmeext->mlmext_info);
+
+	stainfo = rtw_get_stainfo(&adapter->stapriv, &prxattrib->ta[0]);
+
+	if (prxattrib->encrypt == _TKIP_) {
+		RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n recvframe_chkmic:prxattrib->encrypt == _TKIP_\n"));
+		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",
+			prxattrib->ra[0], prxattrib->ra[1], prxattrib->ra[2], prxattrib->ra[3], prxattrib->ra[4], prxattrib->ra[5]));
+
+		/* calculate mic code */
+		if (stainfo != NULL) {
+			if (IS_MCAST(prxattrib->ra)) {
+				/* mickey =&psecuritypriv->dot118021XGrprxmickey.skey[0]; */
+				/* iv = precvframe->u.hdr.rx_data+prxattrib->hdrlen; */
+				/* rxdata_key_idx =(((iv[3])>>6)&0x3) ; */
+				mickey = &psecuritypriv->dot118021XGrprxmickey[prxattrib->key_index].skey[0];
+
+				RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n recvframe_chkmic: bcmc key\n"));
+				/* DBG_871X("\n recvframe_chkmic: bcmc key psecuritypriv->dot118021XGrpKeyid(%d), pmlmeinfo->key_index(%d) , recv key_id(%d)\n", */
+				/* 								psecuritypriv->dot118021XGrpKeyid, pmlmeinfo->key_index, rxdata_key_idx); */
+
+				if (psecuritypriv->binstallGrpkey == false) {
+					res = _FAIL;
+					RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("\n recvframe_chkmic:didn't install group key!!!!!!!!!!\n"));
+					DBG_871X("\n recvframe_chkmic:didn't install group key!!!!!!!!!!\n");
+					goto exit;
+				}
+			} else {
+				mickey = &stainfo->dot11tkiprxmickey.skey[0];
+				RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("\n recvframe_chkmic: unicast key\n"));
+			}
+
+			datalen = precvframe->u.hdr.len-prxattrib->hdrlen-prxattrib->iv_len-prxattrib->icv_len-8;/* icv_len included the mic code */
+			pframe = precvframe->u.hdr.rx_data;
+			payload = pframe+prxattrib->hdrlen+prxattrib->iv_len;
+
+			RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n prxattrib->iv_len =%d prxattrib->icv_len =%d\n", prxattrib->iv_len, prxattrib->icv_len));
+
+
+			rtw_seccalctkipmic(mickey, pframe, payload, datalen, &miccode[0], (unsigned char)prxattrib->priority); /* care the length of the data */
+
+			pframemic = payload+datalen;
+
+			bmic_err = false;
+
+			for (i = 0; i < 8; i++) {
+				if (miccode[i] != *(pframemic+i)) {
+					RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvframe_chkmic:miccode[%d](%02x) != *(pframemic+%d)(%02x) ", i, miccode[i], i, *(pframemic+i)));
+					bmic_err = true;
+				}
+			}
+
+
+			if (bmic_err == true) {
+
+				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",
+					*(pframemic-8), *(pframemic-7), *(pframemic-6), *(pframemic-5), *(pframemic-4), *(pframemic-3), *(pframemic-2), *(pframemic-1)));
+				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",
+					*(pframemic-16), *(pframemic-15), *(pframemic-14), *(pframemic-13), *(pframemic-12), *(pframemic-11), *(pframemic-10), *(pframemic-9)));
+
+				{
+					uint i;
+					RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("\n ======demp packet (len =%d) ======\n", precvframe->u.hdr.len));
+					for (i = 0; i < precvframe->u.hdr.len; i = i+8) {
+						RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x",
+							*(precvframe->u.hdr.rx_data+i), *(precvframe->u.hdr.rx_data+i+1),
+							*(precvframe->u.hdr.rx_data+i+2), *(precvframe->u.hdr.rx_data+i+3),
+							*(precvframe->u.hdr.rx_data+i+4), *(precvframe->u.hdr.rx_data+i+5),
+							*(precvframe->u.hdr.rx_data+i+6), *(precvframe->u.hdr.rx_data+i+7)));
+					}
+					RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("\n ======demp packet end [len =%d]======\n", precvframe->u.hdr.len));
+					RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("\n hrdlen =%d,\n", prxattrib->hdrlen));
+				}
+
+				RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("ra = 0x%.2x 0x%.2x 0x%.2x 0x%.2x 0x%.2x 0x%.2x psecuritypriv->binstallGrpkey =%d ",
+					prxattrib->ra[0], prxattrib->ra[1], prxattrib->ra[2],
+					prxattrib->ra[3], prxattrib->ra[4], prxattrib->ra[5], psecuritypriv->binstallGrpkey));
+
+				/*  double check key_index for some timing issue , */
+				/*  cannot compare with psecuritypriv->dot118021XGrpKeyid also cause timing issue */
+				if ((IS_MCAST(prxattrib->ra) == true)  && (prxattrib->key_index != pmlmeinfo->key_index))
+					brpt_micerror = false;
+
+				if ((prxattrib->bdecrypted == true) && (brpt_micerror == true)) {
+					rtw_handle_tkip_mic_err(adapter, (u8)IS_MCAST(prxattrib->ra));
+					RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" mic error :prxattrib->bdecrypted =%d ", prxattrib->bdecrypted));
+					DBG_871X(" mic error :prxattrib->bdecrypted =%d\n", prxattrib->bdecrypted);
+				} else{
+					RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" mic error :prxattrib->bdecrypted =%d ", prxattrib->bdecrypted));
+					DBG_871X(" mic error :prxattrib->bdecrypted =%d\n", prxattrib->bdecrypted);
+				}
+
+				res = _FAIL;
+
+			} else {
+				/* mic checked ok */
+				if ((psecuritypriv->bcheck_grpkey == false) && (IS_MCAST(prxattrib->ra) == true)) {
+					psecuritypriv->bcheck_grpkey = true;
+					RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("psecuritypriv->bcheck_grpkey =true"));
+				}
+			}
+
+		} else
+			RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvframe_chkmic: rtw_get_stainfo == NULL!!!\n"));
+
+		recvframe_pull_tail(precvframe, 8);
+
+	}
+
+exit:
+	return res;
+
+}
+
+/* decrypt and set the ivlen, icvlen of the recv_frame */
+union recv_frame *decryptor(struct adapter *padapter, union recv_frame *precv_frame);
+union recv_frame *decryptor(struct adapter *padapter, union recv_frame *precv_frame)
+{
+
+	struct rx_pkt_attrib *prxattrib = &precv_frame->u.hdr.attrib;
+	struct security_priv *psecuritypriv = &padapter->securitypriv;
+	union recv_frame *return_packet = precv_frame;
+	u32  res = _SUCCESS;
+
+	DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt);
+
+	RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("prxstat->decrypted =%x prxattrib->encrypt = 0x%03x\n", prxattrib->bdecrypted, prxattrib->encrypt));
+
+	if (prxattrib->encrypt > 0) {
+		u8 *iv = precv_frame->u.hdr.rx_data+prxattrib->hdrlen;
+		prxattrib->key_index = (((iv[3])>>6)&0x3);
+
+		if (prxattrib->key_index > WEP_KEYS) {
+			DBG_871X("prxattrib->key_index(%d) > WEP_KEYS\n", prxattrib->key_index);
+
+			switch (prxattrib->encrypt) {
+			case _WEP40_:
+			case _WEP104_:
+				prxattrib->key_index = psecuritypriv->dot11PrivacyKeyIndex;
+				break;
+			case _TKIP_:
+			case _AES_:
+			default:
+				prxattrib->key_index = psecuritypriv->dot118021XGrpKeyid;
+				break;
+			}
+		}
+	}
+
+	if ((prxattrib->encrypt > 0) && ((prxattrib->bdecrypted == 0) || (psecuritypriv->sw_decrypt == true))) {
+		psecuritypriv->hw_decrypted = false;
+
+		#ifdef DBG_RX_DECRYPTOR
+		DBG_871X("[%s] %d:prxstat->bdecrypted:%d,  prxattrib->encrypt:%d,  Setting psecuritypriv->hw_decrypted = %d\n",
+			__func__,
+			__LINE__,
+			prxattrib->bdecrypted,
+			prxattrib->encrypt,
+			psecuritypriv->hw_decrypted);
+		#endif
+
+		switch (prxattrib->encrypt) {
+		case _WEP40_:
+		case _WEP104_:
+			DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt_wep);
+			rtw_wep_decrypt(padapter, (u8 *)precv_frame);
+			break;
+		case _TKIP_:
+			DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt_tkip);
+			res = rtw_tkip_decrypt(padapter, (u8 *)precv_frame);
+			break;
+		case _AES_:
+			DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt_aes);
+			res = rtw_aes_decrypt(padapter, (u8 *)precv_frame);
+			break;
+		default:
+				break;
+		}
+	} else if (prxattrib->bdecrypted == 1
+		&& prxattrib->encrypt > 0
+		&& (psecuritypriv->busetkipkey == 1 || prxattrib->encrypt != _TKIP_)
+		) {
+		DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt_hw);
+
+		psecuritypriv->hw_decrypted = true;
+		#ifdef DBG_RX_DECRYPTOR
+		DBG_871X("[%s] %d:prxstat->bdecrypted:%d,  prxattrib->encrypt:%d,  Setting psecuritypriv->hw_decrypted = %d\n",
+			__func__,
+			__LINE__,
+			prxattrib->bdecrypted,
+			prxattrib->encrypt,
+			psecuritypriv->hw_decrypted);
+
+		#endif
+	} else {
+		DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt_unknown);
+		#ifdef DBG_RX_DECRYPTOR
+		DBG_871X("[%s] %d:prxstat->bdecrypted:%d,  prxattrib->encrypt:%d,  Setting psecuritypriv->hw_decrypted = %d\n",
+			__func__,
+			__LINE__,
+			prxattrib->bdecrypted,
+			prxattrib->encrypt,
+			psecuritypriv->hw_decrypted);
+		#endif
+	}
+
+	if (res == _FAIL) {
+		rtw_free_recvframe(return_packet, &padapter->recvpriv.free_recv_queue);
+		return_packet = NULL;
+	} else
+		prxattrib->bdecrypted = true;
+
+	return return_packet;
+}
+
+/* set the security information in the recv_frame */
+union recv_frame *portctrl(struct adapter *adapter, union recv_frame *precv_frame);
+union recv_frame *portctrl(struct adapter *adapter, union recv_frame *precv_frame)
+{
+	u8 *psta_addr = NULL;
+	u8 *ptr;
+	uint  auth_alg;
+	struct recv_frame_hdr *pfhdr;
+	struct sta_info *psta;
+	struct sta_priv *pstapriv;
+	union recv_frame *prtnframe;
+	u16 ether_type = 0;
+	u16  eapol_type = 0x888e;/* for Funia BD's WPA issue */
+	struct rx_pkt_attrib *pattrib;
+
+	pstapriv = &adapter->stapriv;
+
+	auth_alg = adapter->securitypriv.dot11AuthAlgrthm;
+
+	ptr = get_recvframe_data(precv_frame);
+	pfhdr = &precv_frame->u.hdr;
+	pattrib = &pfhdr->attrib;
+	psta_addr = pattrib->ta;
+
+	prtnframe = NULL;
+
+	psta = rtw_get_stainfo(pstapriv, psta_addr);
+
+	RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########portctrl:adapter->securitypriv.dot11AuthAlgrthm =%d\n", adapter->securitypriv.dot11AuthAlgrthm));
+
+	if (auth_alg == 2) {
+		if ((psta != NULL) && (psta->ieee8021x_blocked)) {
+			__be16 be_tmp;
+
+			/* blocked */
+			/* only accept EAPOL frame */
+			RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########portctrl:psta->ieee8021x_blocked == 1\n"));
+
+			prtnframe = precv_frame;
+
+			/* get ether_type */
+			ptr = ptr+pfhdr->attrib.hdrlen+pfhdr->attrib.iv_len+LLC_HEADER_SIZE;
+			memcpy(&be_tmp, ptr, 2);
+			ether_type = ntohs(be_tmp);
+
+			if (ether_type == eapol_type)
+				prtnframe = precv_frame;
+			else {
+				/* free this frame */
+				rtw_free_recvframe(precv_frame, &adapter->recvpriv.free_recv_queue);
+				prtnframe = NULL;
+			}
+		} else{
+			/* allowed */
+			/* check decryption status, and decrypt the frame if needed */
+			RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########portctrl:psta->ieee8021x_blocked == 0\n"));
+			RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("portctrl:precv_frame->hdr.attrib.privacy =%x\n", precv_frame->u.hdr.attrib.privacy));
+
+			if (pattrib->bdecrypted == 0)
+				RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("portctrl:prxstat->decrypted =%x\n", pattrib->bdecrypted));
+
+			prtnframe = precv_frame;
+			/* check is the EAPOL frame or not (Rekey) */
+			/* if (ether_type == eapol_type) { */
+			/* 	RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("########portctrl:ether_type == 0x888e\n")); */
+				/* check Rekey */
+
+			/* 	prtnframe =precv_frame; */
+			/*  */
+			/* else { */
+			/* 	RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########portctrl:ether_type = 0x%04x\n", ether_type)); */
+			/*  */
+		}
+	} else
+		prtnframe = precv_frame;
+
+	return prtnframe;
+}
+
+sint recv_decache(union recv_frame *precv_frame, u8 bretry, struct stainfo_rxcache *prxcache);
+sint recv_decache(union recv_frame *precv_frame, u8 bretry, struct stainfo_rxcache *prxcache)
+{
+	sint tid = precv_frame->u.hdr.attrib.priority;
+
+	u16 seq_ctrl = ((precv_frame->u.hdr.attrib.seq_num&0xffff) << 4) |
+		(precv_frame->u.hdr.attrib.frag_num & 0xf);
+
+	if (tid > 15) {
+		RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("recv_decache, (tid>15)! seq_ctrl = 0x%x, tid = 0x%x\n", seq_ctrl, tid));
+
+		return _FAIL;
+	}
+
+	if (1) { /* if (bretry) */
+		if (seq_ctrl == prxcache->tid_rxseq[tid]) {
+			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]));
+
+			return _FAIL;
+		}
+	}
+
+	prxcache->tid_rxseq[tid] = seq_ctrl;
+
+	return _SUCCESS;
+
+}
+
+void process_pwrbit_data(struct adapter *padapter, union recv_frame *precv_frame);
+void process_pwrbit_data(struct adapter *padapter, union recv_frame *precv_frame)
+{
+	unsigned char pwrbit;
+	u8 *ptr = precv_frame->u.hdr.rx_data;
+	struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
+	struct sta_priv *pstapriv = &padapter->stapriv;
+	struct sta_info *psta = NULL;
+
+	psta = rtw_get_stainfo(pstapriv, pattrib->src);
+
+	pwrbit = GetPwrMgt(ptr);
+
+	if (psta) {
+		if (pwrbit) {
+			if (!(psta->state & WIFI_SLEEP_STATE)) {
+				/* psta->state |= WIFI_SLEEP_STATE; */
+				/* pstapriv->sta_dz_bitmap |= BIT(psta->aid); */
+
+				stop_sta_xmit(padapter, psta);
+
+				/* DBG_871X("to sleep, sta_dz_bitmap =%x\n", pstapriv->sta_dz_bitmap); */
+			}
+		} else{
+			if (psta->state & WIFI_SLEEP_STATE) {
+				/* psta->state ^= WIFI_SLEEP_STATE; */
+				/* pstapriv->sta_dz_bitmap &= ~BIT(psta->aid); */
+
+				wakeup_sta_to_xmit(padapter, psta);
+
+				/* DBG_871X("to wakeup, sta_dz_bitmap =%x\n", pstapriv->sta_dz_bitmap); */
+			}
+		}
+
+	}
+}
+
+void process_wmmps_data(struct adapter *padapter, union recv_frame *precv_frame);
+void process_wmmps_data(struct adapter *padapter, union recv_frame *precv_frame)
+{
+	struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
+	struct sta_priv *pstapriv = &padapter->stapriv;
+	struct sta_info *psta = NULL;
+
+	psta = rtw_get_stainfo(pstapriv, pattrib->src);
+
+	if (!psta)
+		return;
+
+	if (!psta->qos_option)
+		return;
+
+	if (!(psta->qos_info&0xf))
+		return;
+
+	if (psta->state&WIFI_SLEEP_STATE) {
+		u8 wmmps_ac = 0;
+
+		switch (pattrib->priority) {
+		case 1:
+		case 2:
+			wmmps_ac = psta->uapsd_bk&BIT(1);
+			break;
+		case 4:
+		case 5:
+			wmmps_ac = psta->uapsd_vi&BIT(1);
+			break;
+		case 6:
+		case 7:
+			wmmps_ac = psta->uapsd_vo&BIT(1);
+			break;
+		case 0:
+		case 3:
+		default:
+			wmmps_ac = psta->uapsd_be&BIT(1);
+			break;
+		}
+
+		if (wmmps_ac) {
+			if (psta->sleepq_ac_len > 0)
+				/* process received triggered frame */
+				xmit_delivery_enabled_frames(padapter, psta);
+			else
+				/* issue one qos null frame with More data bit = 0 and the EOSP bit set (= 1) */
+				issue_qos_nulldata(padapter, psta->hwaddr, (u16)pattrib->priority, 0, 0);
+		}
+	}
+}
+
+void count_rx_stats(struct adapter *padapter, union recv_frame *prframe, struct sta_info *sta);
+void count_rx_stats(struct adapter *padapter, union recv_frame *prframe, struct sta_info *sta)
+{
+	int	sz;
+	struct sta_info 	*psta = NULL;
+	struct stainfo_stats	*pstats = NULL;
+	struct rx_pkt_attrib	*pattrib = &prframe->u.hdr.attrib;
+	struct recv_priv 	*precvpriv = &padapter->recvpriv;
+
+	sz = get_recvframe_len(prframe);
+	precvpriv->rx_bytes += sz;
+
+	padapter->mlmepriv.LinkDetectInfo.NumRxOkInPeriod++;
+
+	if ((!MacAddr_isBcst(pattrib->dst)) && (!IS_MCAST(pattrib->dst))) {
+		padapter->mlmepriv.LinkDetectInfo.NumRxUnicastOkInPeriod++;
+	}
+
+	if (sta)
+		psta = sta;
+	else
+		psta = prframe->u.hdr.psta;
+
+	if (psta) {
+		pstats = &psta->sta_stats;
+
+		pstats->rx_data_pkts++;
+		pstats->rx_bytes += sz;
+	}
+
+	traffic_check_for_leave_lps(padapter, false, 0);
+}
+
+sint sta2sta_data_frame(
+	struct adapter *adapter,
+	union recv_frame *precv_frame,
+	struct sta_info **psta
+);
+sint sta2sta_data_frame(
+	struct adapter *adapter,
+	union recv_frame *precv_frame,
+	struct sta_info **psta
+)
+{
+	u8 *ptr = precv_frame->u.hdr.rx_data;
+	sint ret = _SUCCESS;
+	struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
+	struct	sta_priv 	*pstapriv = &adapter->stapriv;
+	struct	mlme_priv *pmlmepriv = &adapter->mlmepriv;
+	u8 *mybssid  = get_bssid(pmlmepriv);
+	u8 *myhwaddr = myid(&adapter->eeprompriv);
+	u8 *sta_addr = NULL;
+	sint bmcast = IS_MCAST(pattrib->dst);
+
+	/* DBG_871X("[%s] %d, seqnum:%d\n", __func__, __LINE__, pattrib->seq_num); */
+
+	if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true) ||
+		(check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) == true)) {
+
+		/*  filter packets that SA is myself or multicast or broadcast */
+		if (!memcmp(myhwaddr, pattrib->src, ETH_ALEN)) {
+			RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" SA ==myself\n"));
+			ret = _FAIL;
+			goto exit;
+		}
+
+		if ((memcmp(myhwaddr, pattrib->dst, ETH_ALEN))	&& (!bmcast)) {
+			ret = _FAIL;
+			goto exit;
+		}
+
+		if (!memcmp(pattrib->bssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
+		   !memcmp(mybssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
+		   (memcmp(pattrib->bssid, mybssid, ETH_ALEN))) {
+			ret = _FAIL;
+			goto exit;
+		}
+
+		sta_addr = pattrib->src;
+
+	} else if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true) {
+		/*  For Station mode, sa and bssid should always be BSSID, and DA is my mac-address */
+		if (memcmp(pattrib->bssid, pattrib->src, ETH_ALEN)) {
+			RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("bssid != TA under STATION_MODE; drop pkt\n"));
+			ret = _FAIL;
+			goto exit;
+		}
+
+		sta_addr = pattrib->bssid;
+	} else if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
+		if (bmcast) {
+			/*  For AP mode, if DA == MCAST, then BSSID should be also MCAST */
+			if (!IS_MCAST(pattrib->bssid)) {
+					ret = _FAIL;
+					goto exit;
+			}
+		} else{ /*  not mc-frame */
+			/*  For AP mode, if DA is non-MCAST, then it must be BSSID, and bssid == BSSID */
+			if (memcmp(pattrib->bssid, pattrib->dst, ETH_ALEN)) {
+				ret = _FAIL;
+				goto exit;
+			}
+
+			sta_addr = pattrib->src;
+		}
+
+	} else if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
+		memcpy(pattrib->dst, GetAddr1Ptr(ptr), ETH_ALEN);
+		memcpy(pattrib->src, GetAddr2Ptr(ptr), ETH_ALEN);
+		memcpy(pattrib->bssid, GetAddr3Ptr(ptr), ETH_ALEN);
+		memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
+		memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
+
+		sta_addr = mybssid;
+	} else
+		ret  = _FAIL;
+
+
+
+	if (bmcast)
+		*psta = rtw_get_bcmc_stainfo(adapter);
+	else
+		*psta = rtw_get_stainfo(pstapriv, sta_addr); /*  get ap_info */
+
+	if (*psta == NULL) {
+		RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("can't get psta under sta2sta_data_frame ; drop pkt\n"));
+		ret = _FAIL;
+		goto exit;
+	}
+
+exit:
+	return ret;
+}
+
+sint ap2sta_data_frame(
+	struct adapter *adapter,
+	union recv_frame *precv_frame,
+	struct sta_info **psta);
+sint ap2sta_data_frame(
+	struct adapter *adapter,
+	union recv_frame *precv_frame,
+	struct sta_info **psta)
+{
+	u8 *ptr = precv_frame->u.hdr.rx_data;
+	struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
+	sint ret = _SUCCESS;
+	struct	sta_priv 	*pstapriv = &adapter->stapriv;
+	struct	mlme_priv *pmlmepriv = &adapter->mlmepriv;
+	u8 *mybssid  = get_bssid(pmlmepriv);
+	u8 *myhwaddr = myid(&adapter->eeprompriv);
+	sint bmcast = IS_MCAST(pattrib->dst);
+
+	if ((check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true)
+		&& (check_fwstate(pmlmepriv, _FW_LINKED) == true
+			|| check_fwstate(pmlmepriv, _FW_UNDER_LINKING) == true)
+		) {
+
+		/*  filter packets that SA is myself or multicast or broadcast */
+		if (!memcmp(myhwaddr, pattrib->src, ETH_ALEN)) {
+			RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" SA ==myself\n"));
+			#ifdef DBG_RX_DROP_FRAME
+			DBG_871X("DBG_RX_DROP_FRAME %s SA ="MAC_FMT", myhwaddr ="MAC_FMT"\n",
+				__func__, MAC_ARG(pattrib->src), MAC_ARG(myhwaddr));
+			#endif
+			ret = _FAIL;
+			goto exit;
+		}
+
+		/*  da should be for me */
+		if ((memcmp(myhwaddr, pattrib->dst, ETH_ALEN)) && (!bmcast)) {
+			RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
+				(" ap2sta_data_frame:  compare DA fail; DA ="MAC_FMT"\n", MAC_ARG(pattrib->dst)));
+			#ifdef DBG_RX_DROP_FRAME
+			DBG_871X("DBG_RX_DROP_FRAME %s DA ="MAC_FMT"\n", __func__, MAC_ARG(pattrib->dst));
+			#endif
+			ret = _FAIL;
+			goto exit;
+		}
+
+
+		/*  check BSSID */
+		if (!memcmp(pattrib->bssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
+		     !memcmp(mybssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
+		     (memcmp(pattrib->bssid, mybssid, ETH_ALEN))) {
+			RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
+				(" ap2sta_data_frame:  compare BSSID fail ; BSSID ="MAC_FMT"\n", MAC_ARG(pattrib->bssid)));
+			RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("mybssid ="MAC_FMT"\n", MAC_ARG(mybssid)));
+			#ifdef DBG_RX_DROP_FRAME
+			DBG_871X("DBG_RX_DROP_FRAME %s BSSID ="MAC_FMT", mybssid ="MAC_FMT"\n",
+				__func__, MAC_ARG(pattrib->bssid), MAC_ARG(mybssid));
+			DBG_871X("this adapter = %d, buddy adapter = %d\n", adapter->adapter_type, adapter->pbuddystruct adapter->adapter_type);
+			#endif
+
+			if (!bmcast) {
+				DBG_871X("issue_deauth to the nonassociated ap =" MAC_FMT " for the reason(7)\n", MAC_ARG(pattrib->bssid));
+				issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
+			}
+
+			ret = _FAIL;
+			goto exit;
+		}
+
+		if (bmcast)
+			*psta = rtw_get_bcmc_stainfo(adapter);
+		else
+			*psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /*  get ap_info */
+
+		if (*psta == NULL) {
+			RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("ap2sta: can't get psta under STATION_MODE ; drop pkt\n"));
+			#ifdef DBG_RX_DROP_FRAME
+			DBG_871X("DBG_RX_DROP_FRAME %s can't get psta under STATION_MODE ; drop pkt\n", __func__);
+			#endif
+			ret = _FAIL;
+			goto exit;
+		}
+
+		if ((GetFrameSubType(ptr) & WIFI_QOS_DATA_TYPE) == WIFI_QOS_DATA_TYPE) {
+		}
+
+		if (GetFrameSubType(ptr) & BIT(6)) {
+			/* No data, will not indicate to upper layer, temporily count it here */
+			count_rx_stats(adapter, precv_frame, *psta);
+			ret = RTW_RX_HANDLED;
+			goto exit;
+		}
+
+	} else if ((check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) &&
+		     (check_fwstate(pmlmepriv, _FW_LINKED) == true)) {
+		memcpy(pattrib->dst, GetAddr1Ptr(ptr), ETH_ALEN);
+		memcpy(pattrib->src, GetAddr2Ptr(ptr), ETH_ALEN);
+		memcpy(pattrib->bssid, GetAddr3Ptr(ptr), ETH_ALEN);
+		memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
+		memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
+
+		/*  */
+		memcpy(pattrib->bssid,  mybssid, ETH_ALEN);
+
+
+		*psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /*  get sta_info */
+		if (*psta == NULL) {
+			RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("can't get psta under MP_MODE ; drop pkt\n"));
+			#ifdef DBG_RX_DROP_FRAME
+			DBG_871X("DBG_RX_DROP_FRAME %s can't get psta under WIFI_MP_STATE ; drop pkt\n", __func__);
+			#endif
+			ret = _FAIL;
+			goto exit;
+		}
+
+
+	} else if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
+		/* Special case */
+		ret = RTW_RX_HANDLED;
+		goto exit;
+	} else{
+		if (!memcmp(myhwaddr, pattrib->dst, ETH_ALEN) && (!bmcast)) {
+			*psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /*  get sta_info */
+			if (*psta == NULL) {
+
+				/* for AP multicast issue , modify by yiwei */
+				static unsigned long send_issue_deauth_time;
+
+				/* DBG_871X("After send deauth , %u ms has elapsed.\n", jiffies_to_msecs(jiffies - send_issue_deauth_time)); */
+
+				if (jiffies_to_msecs(jiffies - send_issue_deauth_time) > 10000 || send_issue_deauth_time == 0) {
+					send_issue_deauth_time = jiffies;
+
+					DBG_871X("issue_deauth to the ap =" MAC_FMT " for the reason(7)\n", MAC_ARG(pattrib->bssid));
+
+					issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
+				}
+			}
+		}
+
+		ret = _FAIL;
+		#ifdef DBG_RX_DROP_FRAME
+		DBG_871X("DBG_RX_DROP_FRAME %s fw_state:0x%x\n", __func__, get_fwstate(pmlmepriv));
+		#endif
+	}
+
+exit:
+	return ret;
+}
+
+sint sta2ap_data_frame(
+	struct adapter *adapter,
+	union recv_frame *precv_frame,
+	struct sta_info **psta);
+sint sta2ap_data_frame(
+	struct adapter *adapter,
+	union recv_frame *precv_frame,
+	struct sta_info **psta)
+{
+	u8 *ptr = precv_frame->u.hdr.rx_data;
+	struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
+	struct	sta_priv 	*pstapriv = &adapter->stapriv;
+	struct	mlme_priv *pmlmepriv = &adapter->mlmepriv;
+	unsigned char *mybssid  = get_bssid(pmlmepriv);
+	sint ret = _SUCCESS;
+
+	if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
+		/* For AP mode, RA =BSSID, TX =STA(SRC_ADDR), A3 =DST_ADDR */
+		if (memcmp(pattrib->bssid, mybssid, ETH_ALEN)) {
+			ret = _FAIL;
+			goto exit;
+		}
+
+		*psta = rtw_get_stainfo(pstapriv, pattrib->src);
+		if (*psta == NULL) {
+			RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("can't get psta under AP_MODE; drop pkt\n"));
+			DBG_871X("issue_deauth to sta =" MAC_FMT " for the reason(7)\n", MAC_ARG(pattrib->src));
+
+			issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
+
+			ret = RTW_RX_HANDLED;
+			goto exit;
+		}
+
+		process_pwrbit_data(adapter, precv_frame);
+
+		if ((GetFrameSubType(ptr) & WIFI_QOS_DATA_TYPE) == WIFI_QOS_DATA_TYPE) {
+			process_wmmps_data(adapter, precv_frame);
+		}
+
+		if (GetFrameSubType(ptr) & BIT(6)) {
+			/* No data, will not indicate to upper layer, temporily count it here */
+			count_rx_stats(adapter, precv_frame, *psta);
+			ret = RTW_RX_HANDLED;
+			goto exit;
+		}
+	} else {
+		u8 *myhwaddr = myid(&adapter->eeprompriv);
+		if (memcmp(pattrib->ra, myhwaddr, ETH_ALEN)) {
+			ret = RTW_RX_HANDLED;
+			goto exit;
+		}
+		DBG_871X("issue_deauth to sta =" MAC_FMT " for the reason(7)\n", MAC_ARG(pattrib->src));
+		issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
+		ret = RTW_RX_HANDLED;
+		goto exit;
+	}
+
+exit:
+	return ret;
+}
+
+sint validate_recv_ctrl_frame(struct adapter *padapter, union recv_frame *precv_frame);
+sint validate_recv_ctrl_frame(struct adapter *padapter, union recv_frame *precv_frame)
+{
+	struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
+	struct sta_priv *pstapriv = &padapter->stapriv;
+	u8 *pframe = precv_frame->u.hdr.rx_data;
+	struct sta_info *psta = NULL;
+	/* uint len = precv_frame->u.hdr.len; */
+
+	/* DBG_871X("+validate_recv_ctrl_frame\n"); */
+
+	if (GetFrameType(pframe) != WIFI_CTRL_TYPE)
+		return _FAIL;
+
+	/* receive the frames that ra(a1) is my address */
+	if (memcmp(GetAddr1Ptr(pframe), myid(&padapter->eeprompriv), ETH_ALEN))
+		return _FAIL;
+
+	psta = rtw_get_stainfo(pstapriv, GetAddr2Ptr(pframe));
+	if (psta == NULL)
+		return _FAIL;
+
+	/* for rx pkt statistics */
+	psta->sta_stats.rx_ctrl_pkts++;
+
+	/* only handle ps-poll */
+	if (GetFrameSubType(pframe) == WIFI_PSPOLL) {
+		u16 aid;
+		u8 wmmps_ac = 0;
+
+		aid = GetAid(pframe);
+		if (psta->aid != aid)
+			return _FAIL;
+
+		switch (pattrib->priority) {
+		case 1:
+		case 2:
+			wmmps_ac = psta->uapsd_bk&BIT(0);
+			break;
+		case 4:
+		case 5:
+			wmmps_ac = psta->uapsd_vi&BIT(0);
+			break;
+		case 6:
+		case 7:
+			wmmps_ac = psta->uapsd_vo&BIT(0);
+			break;
+		case 0:
+		case 3:
+		default:
+			wmmps_ac = psta->uapsd_be&BIT(0);
+			break;
+		}
+
+		if (wmmps_ac)
+			return _FAIL;
+
+		if (psta->state & WIFI_STA_ALIVE_CHK_STATE) {
+			DBG_871X("%s alive check-rx ps-poll\n", __func__);
+			psta->expire_to = pstapriv->expire_to;
+			psta->state ^= WIFI_STA_ALIVE_CHK_STATE;
+		}
+
+		if ((psta->state&WIFI_SLEEP_STATE) && (pstapriv->sta_dz_bitmap&BIT(psta->aid))) {
+			struct list_head	*xmitframe_plist, *xmitframe_phead;
+			struct xmit_frame *pxmitframe = NULL;
+			struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
+
+			/* spin_lock_bh(&psta->sleep_q.lock); */
+			spin_lock_bh(&pxmitpriv->lock);
+
+			xmitframe_phead = get_list_head(&psta->sleep_q);
+			xmitframe_plist = get_next(xmitframe_phead);
+
+			if (xmitframe_phead != xmitframe_plist) {
+				pxmitframe = LIST_CONTAINOR(xmitframe_plist, struct xmit_frame, list);
+
+				xmitframe_plist = get_next(xmitframe_plist);
+
+				list_del_init(&pxmitframe->list);
+
+				psta->sleepq_len--;
+
+				if (psta->sleepq_len > 0)
+					pxmitframe->attrib.mdata = 1;
+				else
+					pxmitframe->attrib.mdata = 0;
+
+				pxmitframe->attrib.triggered = 1;
+
+				/* DBG_871X("handling ps-poll, q_len =%d, tim =%x\n", psta->sleepq_len, pstapriv->tim_bitmap); */
+
+				rtw_hal_xmitframe_enqueue(padapter, pxmitframe);
+
+				if (psta->sleepq_len == 0) {
+					pstapriv->tim_bitmap &= ~BIT(psta->aid);
+
+					/* DBG_871X("after handling ps-poll, tim =%x\n", pstapriv->tim_bitmap); */
+
+					/* upate BCN for TIM IE */
+					/* update_BCNTIM(padapter); */
+					update_beacon(padapter, _TIM_IE_, NULL, true);
+				}
+
+				/* spin_unlock_bh(&psta->sleep_q.lock); */
+				spin_unlock_bh(&pxmitpriv->lock);
+
+			} else{
+				/* spin_unlock_bh(&psta->sleep_q.lock); */
+				spin_unlock_bh(&pxmitpriv->lock);
+
+				/* DBG_871X("no buffered packets to xmit\n"); */
+				if (pstapriv->tim_bitmap&BIT(psta->aid)) {
+					if (psta->sleepq_len == 0) {
+						DBG_871X("no buffered packets to xmit\n");
+
+						/* issue nulldata with More data bit = 0 to indicate we have no buffered packets */
+						issue_nulldata_in_interrupt(padapter, psta->hwaddr);
+					} else{
+						DBG_871X("error!psta->sleepq_len =%d\n", psta->sleepq_len);
+						psta->sleepq_len = 0;
+					}
+
+					pstapriv->tim_bitmap &= ~BIT(psta->aid);
+
+					/* upate BCN for TIM IE */
+					/* update_BCNTIM(padapter); */
+					update_beacon(padapter, _TIM_IE_, NULL, true);
+				}
+			}
+		}
+	}
+
+	return _FAIL;
+
+}
+
+union recv_frame *recvframe_chk_defrag(struct adapter *padapter, union recv_frame *precv_frame);
+sint validate_recv_mgnt_frame(struct adapter *padapter, union recv_frame *precv_frame);
+sint validate_recv_mgnt_frame(struct adapter *padapter, union recv_frame *precv_frame)
+{
+	/* struct mlme_priv *pmlmepriv = &adapter->mlmepriv; */
+
+	RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("+validate_recv_mgnt_frame\n"));
+
+	precv_frame = recvframe_chk_defrag(padapter, precv_frame);
+	if (precv_frame == NULL) {
+		RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("%s: fragment packet\n", __func__));
+		return _SUCCESS;
+	}
+
+	{
+		/* for rx pkt statistics */
+		struct sta_info *psta = rtw_get_stainfo(&padapter->stapriv, GetAddr2Ptr(precv_frame->u.hdr.rx_data));
+		if (psta) {
+			psta->sta_stats.rx_mgnt_pkts++;
+			if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_BEACON)
+				psta->sta_stats.rx_beacon_pkts++;
+			else if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_PROBEREQ)
+				psta->sta_stats.rx_probereq_pkts++;
+			else if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_PROBERSP) {
+				if (!memcmp(padapter->eeprompriv.mac_addr, GetAddr1Ptr(precv_frame->u.hdr.rx_data), ETH_ALEN))
+					psta->sta_stats.rx_probersp_pkts++;
+				else if (is_broadcast_mac_addr(GetAddr1Ptr(precv_frame->u.hdr.rx_data))
+					|| is_multicast_mac_addr(GetAddr1Ptr(precv_frame->u.hdr.rx_data)))
+					psta->sta_stats.rx_probersp_bm_pkts++;
+				else
+					psta->sta_stats.rx_probersp_uo_pkts++;
+			}
+		}
+	}
+
+	mgt_dispatcher(padapter, precv_frame);
+
+	return _SUCCESS;
+
+}
+
+sint validate_recv_data_frame(struct adapter *adapter, union recv_frame *precv_frame);
+sint validate_recv_data_frame(struct adapter *adapter, union recv_frame *precv_frame)
+{
+	u8 bretry;
+	u8 *psa, *pda, *pbssid;
+	struct sta_info *psta = NULL;
+	u8 *ptr = precv_frame->u.hdr.rx_data;
+	struct rx_pkt_attrib	*pattrib = &precv_frame->u.hdr.attrib;
+	struct security_priv *psecuritypriv = &adapter->securitypriv;
+	sint ret = _SUCCESS;
+
+	bretry = GetRetry(ptr);
+	pda = get_da(ptr);
+	psa = get_sa(ptr);
+	pbssid = get_hdr_bssid(ptr);
+
+	if (pbssid == NULL) {
+		#ifdef DBG_RX_DROP_FRAME
+		DBG_871X("DBG_RX_DROP_FRAME %s pbssid == NULL\n", __func__);
+		#endif
+		ret = _FAIL;
+		goto exit;
+	}
+
+	memcpy(pattrib->dst, pda, ETH_ALEN);
+	memcpy(pattrib->src, psa, ETH_ALEN);
+
+	memcpy(pattrib->bssid, pbssid, ETH_ALEN);
+
+	switch (pattrib->to_fr_ds) {
+	case 0:
+		memcpy(pattrib->ra, pda, ETH_ALEN);
+		memcpy(pattrib->ta, psa, ETH_ALEN);
+		ret = sta2sta_data_frame(adapter, precv_frame, &psta);
+		break;
+
+	case 1:
+		memcpy(pattrib->ra, pda, ETH_ALEN);
+		memcpy(pattrib->ta, pbssid, ETH_ALEN);
+		ret = ap2sta_data_frame(adapter, precv_frame, &psta);
+		break;
+
+	case 2:
+		memcpy(pattrib->ra, pbssid, ETH_ALEN);
+		memcpy(pattrib->ta, psa, ETH_ALEN);
+		ret = sta2ap_data_frame(adapter, precv_frame, &psta);
+		break;
+
+	case 3:
+		memcpy(pattrib->ra, GetAddr1Ptr(ptr), ETH_ALEN);
+		memcpy(pattrib->ta, GetAddr2Ptr(ptr), ETH_ALEN);
+		ret = _FAIL;
+		RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" case 3\n"));
+		break;
+
+	default:
+		ret = _FAIL;
+		break;
+
+	}
+
+	if (ret == _FAIL) {
+		#ifdef DBG_RX_DROP_FRAME
+		DBG_871X("DBG_RX_DROP_FRAME %s case:%d, res:%d\n", __func__, pattrib->to_fr_ds, ret);
+		#endif
+		goto exit;
+	} else if (ret == RTW_RX_HANDLED) {
+		goto exit;
+	}
+
+
+	if (psta == NULL) {
+		RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" after to_fr_ds_chk; psta == NULL\n"));
+		#ifdef DBG_RX_DROP_FRAME
+		DBG_871X("DBG_RX_DROP_FRAME %s psta == NULL\n", __func__);
+		#endif
+		ret = _FAIL;
+		goto exit;
+	}
+
+	/* psta->rssi = prxcmd->rssi; */
+	/* psta->signal_quality = prxcmd->sq; */
+	precv_frame->u.hdr.psta = psta;
+
+
+	pattrib->amsdu = 0;
+	pattrib->ack_policy = 0;
+	/* parsing QC field */
+	if (pattrib->qos == 1) {
+		pattrib->priority = GetPriority((ptr + 24));
+		pattrib->ack_policy = GetAckpolicy((ptr + 24));
+		pattrib->amsdu = GetAMsdu((ptr + 24));
+		pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 32 : 26;
+
+		if (pattrib->priority != 0 && pattrib->priority != 3)
+			adapter->recvpriv.bIsAnyNonBEPkts = true;
+
+	} else{
+		pattrib->priority = 0;
+		pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 30 : 24;
+	}
+
+
+	if (pattrib->order)/* HT-CTRL 11n */
+		pattrib->hdrlen += 4;
+
+	precv_frame->u.hdr.preorder_ctrl = &psta->recvreorder_ctrl[pattrib->priority];
+
+	/*  decache, drop duplicate recv packets */
+	if (recv_decache(precv_frame, bretry, &psta->sta_recvpriv.rxcache) == _FAIL) {
+		RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("decache : drop pkt\n"));
+		#ifdef DBG_RX_DROP_FRAME
+		DBG_871X("DBG_RX_DROP_FRAME %s recv_decache return _FAIL\n", __func__);
+		#endif
+		ret = _FAIL;
+		goto exit;
+	}
+
+	if (pattrib->privacy) {
+
+		RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("validate_recv_data_frame:pattrib->privacy =%x\n", pattrib->privacy));
+		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)));
+
+		GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, IS_MCAST(pattrib->ra));
+
+		RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n pattrib->encrypt =%d\n", pattrib->encrypt));
+
+		SET_ICE_IV_LEN(pattrib->iv_len, pattrib->icv_len, pattrib->encrypt);
+	} else{
+		pattrib->encrypt = 0;
+		pattrib->iv_len = pattrib->icv_len = 0;
+	}
+
+exit:
+	return ret;
+}
+
+static sint validate_80211w_mgmt(struct adapter *adapter, union recv_frame *precv_frame)
+{
+	struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
+	struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
+	u8 *ptr = precv_frame->u.hdr.rx_data;
+	u8 type;
+	u8 subtype;
+
+	type =  GetFrameType(ptr);
+	subtype = GetFrameSubType(ptr); /* bit(7)~bit(2) */
+
+	/* only support station mode */
+	if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) && check_fwstate(pmlmepriv, _FW_LINKED)
+		&& adapter->securitypriv.binstallBIPkey == true) {
+		/* unicast management frame decrypt */
+		if (pattrib->privacy && !(IS_MCAST(GetAddr1Ptr(ptr))) &&
+			(subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC || subtype == WIFI_ACTION)) {
+			u8 *ppp, *mgmt_DATA;
+			u32 data_len = 0;
+			ppp = GetAddr2Ptr(ptr);
+
+			pattrib->bdecrypted = 0;
+			pattrib->encrypt = _AES_;
+			pattrib->hdrlen = sizeof(struct ieee80211_hdr_3addr);
+			/* set iv and icv length */
+			SET_ICE_IV_LEN(pattrib->iv_len, pattrib->icv_len, pattrib->encrypt);
+			memcpy(pattrib->ra, GetAddr1Ptr(ptr), ETH_ALEN);
+			memcpy(pattrib->ta, GetAddr2Ptr(ptr), ETH_ALEN);
+			/* actual management data frame body */
+			data_len = pattrib->pkt_len - pattrib->hdrlen - pattrib->iv_len - pattrib->icv_len;
+			mgmt_DATA = rtw_zmalloc(data_len);
+			if (mgmt_DATA == NULL) {
+				DBG_871X("%s mgmt allocate fail  !!!!!!!!!\n", __func__);
+				goto validate_80211w_fail;
+			}
+			precv_frame = decryptor(adapter, precv_frame);
+			/* save actual management data frame body */
+			memcpy(mgmt_DATA, ptr+pattrib->hdrlen+pattrib->iv_len, data_len);
+			/* overwrite the iv field */
+			memcpy(ptr+pattrib->hdrlen, mgmt_DATA, data_len);
+			/* remove the iv and icv length */
+			pattrib->pkt_len = pattrib->pkt_len - pattrib->iv_len - pattrib->icv_len;
+			kfree(mgmt_DATA);
+			if (!precv_frame) {
+				DBG_871X("%s mgmt descrypt fail  !!!!!!!!!\n", __func__);
+				goto validate_80211w_fail;
+			}
+		} else if (IS_MCAST(GetAddr1Ptr(ptr)) &&
+			(subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC)) {
+			sint BIP_ret = _SUCCESS;
+			/* verify BIP MME IE of broadcast/multicast de-auth/disassoc packet */
+			BIP_ret = rtw_BIP_verify(adapter, (u8 *)precv_frame);
+			if (BIP_ret == _FAIL) {
+				/* DBG_871X("802.11w BIP verify fail\n"); */
+				goto validate_80211w_fail;
+			} else if (BIP_ret == RTW_RX_HANDLED) {
+				/* DBG_871X("802.11w recv none protected packet\n"); */
+				/* issue sa query request */
+				issue_action_SA_Query(adapter, NULL, 0, 0);
+				goto validate_80211w_fail;
+			}
+		} else { /* 802.11w protect */
+			if (subtype == WIFI_ACTION) {
+				/* according 802.11-2012 standard, these five types are not robust types */
+				if (ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_PUBLIC          &&
+					ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_HT              &&
+					ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_UNPROTECTED_WNM &&
+					ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_SELF_PROTECTED  &&
+					ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_P2P) {
+					DBG_871X("action frame category =%d should robust\n", ptr[WLAN_HDR_A3_LEN]);
+					goto validate_80211w_fail;
+				}
+			} else if (subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC) {
+				DBG_871X("802.11w recv none protected packet\n");
+				/* issue sa query request */
+				issue_action_SA_Query(adapter, NULL, 0, 0);
+				goto validate_80211w_fail;
+			}
+		}
+	}
+	return _SUCCESS;
+
+validate_80211w_fail:
+	return _FAIL;
+
+}
+
+static inline void dump_rx_packet(u8 *ptr)
+{
+	int i;
+
+	DBG_871X("#############################\n");
+	for (i = 0; i < 64; i = i+8)
+		DBG_871X("%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:\n", *(ptr+i),
+		*(ptr+i+1), *(ptr+i+2), *(ptr+i+3), *(ptr+i+4), *(ptr+i+5), *(ptr+i+6), *(ptr+i+7));
+	DBG_871X("#############################\n");
+}
+
+sint validate_recv_frame(struct adapter *adapter, union recv_frame *precv_frame);
+sint validate_recv_frame(struct adapter *adapter, union recv_frame *precv_frame)
+{
+	/* shall check frame subtype, to / from ds, da, bssid */
+
+	/* then call check if rx seq/frag. duplicated. */
+
+	u8 type;
+	u8 subtype;
+	sint retval = _SUCCESS;
+	u8 bDumpRxPkt;
+
+	struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
+
+	u8 *ptr = precv_frame->u.hdr.rx_data;
+	u8  ver = (unsigned char) (*ptr)&0x3;
+
+	/* add version chk */
+	if (ver != 0) {
+		RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_data_frame fail! (ver!= 0)\n"));
+		retval = _FAIL;
+		DBG_COUNTER(adapter->rx_logs.core_rx_pre_ver_err);
+		goto exit;
+	}
+
+	type =  GetFrameType(ptr);
+	subtype = GetFrameSubType(ptr); /* bit(7)~bit(2) */
+
+	pattrib->to_fr_ds = get_tofr_ds(ptr);
+
+	pattrib->frag_num = GetFragNum(ptr);
+	pattrib->seq_num = GetSequence(ptr);
+
+	pattrib->pw_save = GetPwrMgt(ptr);
+	pattrib->mfrag = GetMFrag(ptr);
+	pattrib->mdata = GetMData(ptr);
+	pattrib->privacy = GetPrivacy(ptr);
+	pattrib->order = GetOrder(ptr);
+	rtw_hal_get_def_var(adapter, HAL_DEF_DBG_DUMP_RXPKT, &(bDumpRxPkt));
+	if (bDumpRxPkt == 1) /* dump all rx packets */
+		dump_rx_packet(ptr);
+	else if ((bDumpRxPkt == 2) && (type == WIFI_MGT_TYPE))
+		dump_rx_packet(ptr);
+	else if ((bDumpRxPkt == 3) && (type == WIFI_DATA_TYPE))
+		dump_rx_packet(ptr);
+
+	switch (type) {
+	case WIFI_MGT_TYPE: /* mgnt */
+		DBG_COUNTER(adapter->rx_logs.core_rx_pre_mgmt);
+		if (validate_80211w_mgmt(adapter, precv_frame) == _FAIL) {
+			retval = _FAIL;
+			DBG_COUNTER(padapter->rx_logs.core_rx_pre_mgmt_err_80211w);
+			break;
+		}
+
+		retval = validate_recv_mgnt_frame(adapter, precv_frame);
+		if (retval == _FAIL) {
+			RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_mgnt_frame fail\n"));
+			DBG_COUNTER(adapter->rx_logs.core_rx_pre_mgmt_err);
+		}
+		retval = _FAIL; /*  only data frame return _SUCCESS */
+		break;
+	case WIFI_CTRL_TYPE: /* ctrl */
+		DBG_COUNTER(adapter->rx_logs.core_rx_pre_ctrl);
+		retval = validate_recv_ctrl_frame(adapter, precv_frame);
+		if (retval == _FAIL) {
+			RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_ctrl_frame fail\n"));
+			DBG_COUNTER(adapter->rx_logs.core_rx_pre_ctrl_err);
+		}
+		retval = _FAIL; /*  only data frame return _SUCCESS */
+		break;
+	case WIFI_DATA_TYPE: /* data */
+		DBG_COUNTER(adapter->rx_logs.core_rx_pre_data);
+
+		pattrib->qos = (subtype & BIT(7)) ? 1:0;
+		retval = validate_recv_data_frame(adapter, precv_frame);
+		if (retval == _FAIL) {
+			struct recv_priv *precvpriv = &adapter->recvpriv;
+			/* RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_data_frame fail\n")); */
+			precvpriv->rx_drop++;
+			DBG_COUNTER(adapter->rx_logs.core_rx_pre_data_err);
+		} else if (retval == _SUCCESS) {
+#ifdef DBG_RX_DUMP_EAP
+			u8 bDumpRxPkt;
+			u16 eth_type;
+
+			/*  dump eapol */
+			rtw_hal_get_def_var(adapter, HAL_DEF_DBG_DUMP_RXPKT, &(bDumpRxPkt));
+			/*  get ether_type */
+			memcpy(&eth_type, ptr + pattrib->hdrlen + pattrib->iv_len + LLC_HEADER_SIZE, 2);
+			eth_type = ntohs((unsigned short) eth_type);
+			if ((bDumpRxPkt == 4) && (eth_type == 0x888e))
+				dump_rx_packet(ptr);
+#endif
+		} else
+			DBG_COUNTER(adapter->rx_logs.core_rx_pre_data_handled);
+		break;
+	default:
+		DBG_COUNTER(adapter->rx_logs.core_rx_pre_unknown);
+		RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_data_frame fail! type = 0x%x\n", type));
+		#ifdef DBG_RX_DROP_FRAME
+		DBG_871X("DBG_RX_DROP_FRAME validate_recv_data_frame fail! type = 0x%x\n", type);
+		#endif
+		retval = _FAIL;
+		break;
+	}
+
+exit:
+	return retval;
+}
+
+
+/* remove the wlanhdr and add the eth_hdr */
+sint wlanhdr_to_ethhdr(union recv_frame *precvframe);
+sint wlanhdr_to_ethhdr(union recv_frame *precvframe)
+{
+	sint	rmv_len;
+	u16 eth_type, len;
+	u8 bsnaphdr;
+	u8 *psnap_type;
+	struct ieee80211_snap_hdr	*psnap;
+	__be16 be_tmp;
+	sint ret = _SUCCESS;
+	struct adapter			*adapter = precvframe->u.hdr.adapter;
+	struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
+	u8 *ptr = get_recvframe_data(precvframe) ; /*  point to frame_ctrl field */
+	struct rx_pkt_attrib *pattrib = &precvframe->u.hdr.attrib;
+
+	if (pattrib->encrypt) {
+		recvframe_pull_tail(precvframe, pattrib->icv_len);
+	}
+
+	psnap = (struct ieee80211_snap_hdr	*)(ptr+pattrib->hdrlen + pattrib->iv_len);
+	psnap_type = ptr+pattrib->hdrlen + pattrib->iv_len+SNAP_SIZE;
+	/* convert hdr + possible LLC headers into Ethernet header */
+	/* eth_type = (psnap_type[0] << 8) | psnap_type[1]; */
+	if ((!memcmp(psnap, rtw_rfc1042_header, SNAP_SIZE) &&
+		(memcmp(psnap_type, SNAP_ETH_TYPE_IPX, 2)) &&
+		(memcmp(psnap_type, SNAP_ETH_TYPE_APPLETALK_AARP, 2))) ||
+		/* eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) || */
+		 !memcmp(psnap, rtw_bridge_tunnel_header, SNAP_SIZE)) {
+		/* remove RFC1042 or Bridge-Tunnel encapsulation and replace EtherType */
+		bsnaphdr = true;
+	} else
+		/* Leave Ethernet header part of hdr and full payload */
+		bsnaphdr = false;
+
+	rmv_len = pattrib->hdrlen + pattrib->iv_len + (bsnaphdr?SNAP_SIZE:0);
+	len = precvframe->u.hdr.len - rmv_len;
+
+	RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n ===pattrib->hdrlen: %x,  pattrib->iv_len:%x ===\n\n", pattrib->hdrlen,  pattrib->iv_len));
+
+	memcpy(&be_tmp, ptr+rmv_len, 2);
+	eth_type = ntohs(be_tmp); /* pattrib->ether_type */
+	pattrib->eth_type = eth_type;
+
+#ifdef CONFIG_AUTO_AP_MODE
+	if (0x8899 == pattrib->eth_type) {
+		struct sta_info *psta = precvframe->u.hdr.psta;
+
+		DBG_871X("wlan rx: got eth_type = 0x%x\n", pattrib->eth_type);
+
+		if (psta && psta->isrc && psta->pid > 0) {
+			u16 rx_pid;
+
+			rx_pid = *(u16 *)(ptr+rmv_len+2);
+
+			DBG_871X("wlan rx(pid = 0x%x): sta("MAC_FMT") pid = 0x%x\n",
+				rx_pid, MAC_ARG(psta->hwaddr), psta->pid);
+
+			if (rx_pid == psta->pid) {
+				int i;
+				u16 len = *(u16 *)(ptr+rmv_len+4);
+				/* u16 ctrl_type = *(u16*)(ptr+rmv_len+6); */
+
+				/* DBG_871X("RC: len = 0x%x, ctrl_type = 0x%x\n", len, ctrl_type); */
+				DBG_871X("RC: len = 0x%x\n", len);
+
+				for (i = 0; i < len ; i++)
+					DBG_871X("0x%x\n", *(ptr+rmv_len+6+i));
+					/* DBG_871X("0x%x\n", *(ptr+rmv_len+8+i)); */
+
+				DBG_871X("RC-end\n");
+			}
+		}
+	}
+#endif /* CONFIG_AUTO_AP_MODE */
+
+	if ((check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)) {
+		ptr += rmv_len;
+		*ptr = 0x87;
+		*(ptr+1) = 0x12;
+
+		eth_type = 0x8712;
+		/*  append rx status for mp test packets */
+		ptr = recvframe_pull(precvframe, (rmv_len-sizeof(struct ethhdr)+2)-24);
+		memcpy(ptr, get_rxmem(precvframe), 24);
+		ptr += 24;
+	} else
+		ptr = recvframe_pull(precvframe, (rmv_len-sizeof(struct ethhdr) + (bsnaphdr?2:0)));
+
+	memcpy(ptr, pattrib->dst, ETH_ALEN);
+	memcpy(ptr+ETH_ALEN, pattrib->src, ETH_ALEN);
+
+	if (!bsnaphdr) {
+		be_tmp = htons(len);
+		memcpy(ptr+12, &be_tmp, 2);
+	}
+
+	return ret;
+}
+
+/* perform defrag */
+static union recv_frame *recvframe_defrag(struct adapter *adapter,
+					  struct __queue *defrag_q)
+{
+	struct list_head	 *plist, *phead;
+	u8 *data, wlanhdr_offset;
+	u8 curfragnum;
+	struct recv_frame_hdr *pfhdr, *pnfhdr;
+	union recv_frame *prframe, *pnextrframe;
+	struct __queue	*pfree_recv_queue;
+
+	curfragnum = 0;
+	pfree_recv_queue = &adapter->recvpriv.free_recv_queue;
+
+	phead = get_list_head(defrag_q);
+	plist = get_next(phead);
+	prframe = (union recv_frame *)plist;
+	pfhdr = &prframe->u.hdr;
+	list_del_init(&(prframe->u.list));
+
+	if (curfragnum != pfhdr->attrib.frag_num) {
+		/* the first fragment number must be 0 */
+		/* free the whole queue */
+		rtw_free_recvframe(prframe, pfree_recv_queue);
+		rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
+
+		return NULL;
+	}
+
+	curfragnum++;
+
+	plist = get_list_head(defrag_q);
+
+	plist = get_next(plist);
+
+	data = get_recvframe_data(prframe);
+
+	while (phead != plist) {
+		pnextrframe = (union recv_frame *)plist;
+		pnfhdr = &pnextrframe->u.hdr;
+
+
+		/* check the fragment sequence  (2nd ~n fragment frame) */
+
+		if (curfragnum != pnfhdr->attrib.frag_num) {
+			/* the fragment number must be increasing  (after decache) */
+			/* release the defrag_q & prframe */
+			rtw_free_recvframe(prframe, pfree_recv_queue);
+			rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
+			return NULL;
+		}
+
+		curfragnum++;
+
+		/* copy the 2nd~n fragment frame's payload to the first fragment */
+		/* get the 2nd~last fragment frame's payload */
+
+		wlanhdr_offset = pnfhdr->attrib.hdrlen + pnfhdr->attrib.iv_len;
+
+		recvframe_pull(pnextrframe, wlanhdr_offset);
+
+		/* append  to first fragment frame's tail (if privacy frame, pull the ICV) */
+		recvframe_pull_tail(prframe, pfhdr->attrib.icv_len);
+
+		/* memcpy */
+		memcpy(pfhdr->rx_tail, pnfhdr->rx_data, pnfhdr->len);
+
+		recvframe_put(prframe, pnfhdr->len);
+
+		pfhdr->attrib.icv_len = pnfhdr->attrib.icv_len;
+		plist = get_next(plist);
+
+	}
+
+	/* free the defrag_q queue and return the prframe */
+	rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
+
+	RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("Performance defrag!!!!!\n"));
+
+	return prframe;
+}
+
+/* check if need to defrag, if needed queue the frame to defrag_q */
+union recv_frame *recvframe_chk_defrag(struct adapter *padapter, union recv_frame *precv_frame)
+{
+	u8 ismfrag;
+	u8 fragnum;
+	u8 *psta_addr;
+	struct recv_frame_hdr *pfhdr;
+	struct sta_info *psta;
+	struct sta_priv *pstapriv;
+	struct list_head *phead;
+	union recv_frame *prtnframe = NULL;
+	struct __queue *pfree_recv_queue, *pdefrag_q;
+
+	pstapriv = &padapter->stapriv;
+
+	pfhdr = &precv_frame->u.hdr;
+
+	pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
+
+	/* need to define struct of wlan header frame ctrl */
+	ismfrag = pfhdr->attrib.mfrag;
+	fragnum = pfhdr->attrib.frag_num;
+
+	psta_addr = pfhdr->attrib.ta;
+	psta = rtw_get_stainfo(pstapriv, psta_addr);
+	if (psta == NULL) {
+		u8 type = GetFrameType(pfhdr->rx_data);
+		if (type != WIFI_DATA_TYPE) {
+			psta = rtw_get_bcmc_stainfo(padapter);
+			pdefrag_q = &psta->sta_recvpriv.defrag_q;
+		} else
+			pdefrag_q = NULL;
+	} else
+		pdefrag_q = &psta->sta_recvpriv.defrag_q;
+
+	if ((ismfrag == 0) && (fragnum == 0))
+		prtnframe = precv_frame;/* isn't a fragment frame */
+
+	if (ismfrag == 1) {
+		/* 0~(n-1) fragment frame */
+		/* enqueue to defraf_g */
+		if (pdefrag_q != NULL) {
+			if (fragnum == 0)
+				/* the first fragment */
+				if (!list_empty(&pdefrag_q->queue))
+					/* free current defrag_q */
+					rtw_free_recvframe_queue(pdefrag_q, pfree_recv_queue);
+
+
+			/* Then enqueue the 0~(n-1) fragment into the defrag_q */
+
+			/* spin_lock(&pdefrag_q->lock); */
+			phead = get_list_head(pdefrag_q);
+			list_add_tail(&pfhdr->list, phead);
+			/* spin_unlock(&pdefrag_q->lock); */
+
+			RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("Enqueuq: ismfrag = %d, fragnum = %d\n", ismfrag, fragnum));
+
+			prtnframe = NULL;
+
+		} else{
+			/* can't find this ta's defrag_queue, so free this recv_frame */
+			rtw_free_recvframe(precv_frame, pfree_recv_queue);
+			prtnframe = NULL;
+			RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("Free because pdefrag_q == NULL: ismfrag = %d, fragnum = %d\n", ismfrag, fragnum));
+		}
+
+	}
+
+	if ((ismfrag == 0) && (fragnum != 0)) {
+		/* the last fragment frame */
+		/* enqueue the last fragment */
+		if (pdefrag_q != NULL) {
+			/* spin_lock(&pdefrag_q->lock); */
+			phead = get_list_head(pdefrag_q);
+			list_add_tail(&pfhdr->list, phead);
+			/* spin_unlock(&pdefrag_q->lock); */
+
+			/* call recvframe_defrag to defrag */
+			RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("defrag: ismfrag = %d, fragnum = %d\n", ismfrag, fragnum));
+			precv_frame = recvframe_defrag(padapter, pdefrag_q);
+			prtnframe = precv_frame;
+
+		} else{
+			/* can't find this ta's defrag_queue, so free this recv_frame */
+			rtw_free_recvframe(precv_frame, pfree_recv_queue);
+			prtnframe = NULL;
+			RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("Free because pdefrag_q == NULL: ismfrag = %d, fragnum = %d\n", ismfrag, fragnum));
+		}
+
+	}
+
+
+	if ((prtnframe != NULL) && (prtnframe->u.hdr.attrib.privacy)) {
+		/* after defrag we must check tkip mic code */
+		if (recvframe_chkmic(padapter,  prtnframe) == _FAIL) {
+			RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvframe_chkmic(padapter,  prtnframe) == _FAIL\n"));
+			rtw_free_recvframe(prtnframe, pfree_recv_queue);
+			prtnframe = NULL;
+		}
+	}
+	return prtnframe;
+}
+
+static int amsdu_to_msdu(struct adapter *padapter, union recv_frame *prframe)
+{
+	int	a_len, padding_len;
+	u16 nSubframe_Length;
+	u8 nr_subframes, i;
+	u8 *pdata;
+	_pkt *sub_pkt, *subframes[MAX_SUBFRAME_COUNT];
+	struct recv_priv *precvpriv = &padapter->recvpriv;
+	struct __queue *pfree_recv_queue = &(precvpriv->free_recv_queue);
+	int	ret = _SUCCESS;
+
+	nr_subframes = 0;
+
+	recvframe_pull(prframe, prframe->u.hdr.attrib.hdrlen);
+
+	if (prframe->u.hdr.attrib.iv_len > 0)
+		recvframe_pull(prframe, prframe->u.hdr.attrib.iv_len);
+
+	a_len = prframe->u.hdr.len;
+
+	pdata = prframe->u.hdr.rx_data;
+
+	while (a_len > ETH_HLEN) {
+
+		/* Offset 12 denote 2 mac address */
+		nSubframe_Length = RTW_GET_BE16(pdata + 12);
+
+		if (a_len < (ETHERNET_HEADER_SIZE + nSubframe_Length)) {
+			DBG_871X("nRemain_Length is %d and nSubframe_Length is : %d\n", a_len, nSubframe_Length);
+			break;
+		}
+
+		sub_pkt = rtw_os_alloc_msdu_pkt(prframe, nSubframe_Length, pdata);
+		if (sub_pkt == NULL) {
+			DBG_871X("%s(): allocate sub packet fail !!!\n", __func__);
+			break;
+		}
+
+		/* move the data point to data content */
+		pdata += ETH_HLEN;
+		a_len -= ETH_HLEN;
+
+		subframes[nr_subframes++] = sub_pkt;
+
+		if (nr_subframes >= MAX_SUBFRAME_COUNT) {
+			DBG_871X("ParseSubframe(): Too many Subframes! Packets dropped!\n");
+			break;
+		}
+
+		pdata += nSubframe_Length;
+		a_len -= nSubframe_Length;
+		if (a_len != 0) {
+			padding_len = 4 - ((nSubframe_Length + ETH_HLEN) & (4-1));
+			if (padding_len == 4) {
+				padding_len = 0;
+			}
+
+			if (a_len < padding_len) {
+				DBG_871X("ParseSubframe(): a_len < padding_len !\n");
+				break;
+			}
+			pdata += padding_len;
+			a_len -= padding_len;
+		}
+	}
+
+	for (i = 0; i < nr_subframes; i++) {
+		sub_pkt = subframes[i];
+
+		/* Indicat the packets to upper layer */
+		if (sub_pkt) {
+			rtw_os_recv_indicate_pkt(padapter, sub_pkt, &prframe->u.hdr.attrib);
+		}
+	}
+
+	prframe->u.hdr.len = 0;
+	rtw_free_recvframe(prframe, pfree_recv_queue);/* free this recv_frame */
+
+	return ret;
+}
+
+int check_indicate_seq(struct recv_reorder_ctrl *preorder_ctrl, u16 seq_num);
+int check_indicate_seq(struct recv_reorder_ctrl *preorder_ctrl, u16 seq_num)
+{
+	struct adapter *padapter = preorder_ctrl->padapter;
+	struct dvobj_priv *psdpriv = padapter->dvobj;
+	struct debug_priv *pdbgpriv = &psdpriv->drv_dbg;
+	u8 wsize = preorder_ctrl->wsize_b;
+	u16 wend = (preorder_ctrl->indicate_seq + wsize - 1) & 0xFFF;/*  4096; */
+
+	/*  Rx Reorder initialize condition. */
+	if (preorder_ctrl->indicate_seq == 0xFFFF) {
+		preorder_ctrl->indicate_seq = seq_num;
+		#ifdef DBG_RX_SEQ
+		DBG_871X("DBG_RX_SEQ %s:%d init IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
+			preorder_ctrl->indicate_seq, seq_num);
+		#endif
+
+		/* DbgPrint("check_indicate_seq, 1st->indicate_seq =%d\n", precvpriv->indicate_seq); */
+	}
+
+	/* DbgPrint("enter->check_indicate_seq(): IndicateSeq: %d, NewSeq: %d\n", precvpriv->indicate_seq, seq_num); */
+
+	/*  Drop out the packet which SeqNum is smaller than WinStart */
+	if (SN_LESS(seq_num, preorder_ctrl->indicate_seq)) {
+		/* RT_TRACE(COMP_RX_REORDER, DBG_LOUD, ("CheckRxTsIndicateSeq(): Packet Drop! IndicateSeq: %d, NewSeq: %d\n", pTS->RxIndicateSeq, NewSeqNum)); */
+		/* DbgPrint("CheckRxTsIndicateSeq(): Packet Drop! IndicateSeq: %d, NewSeq: %d\n", precvpriv->indicate_seq, seq_num); */
+
+		#ifdef DBG_RX_DROP_FRAME
+		DBG_871X("%s IndicateSeq: %d > NewSeq: %d\n", __func__,
+			preorder_ctrl->indicate_seq, seq_num);
+		#endif
+
+
+		return false;
+	}
+
+	/*  */
+	/*  Sliding window manipulation. Conditions includes: */
+	/*  1. Incoming SeqNum is equal to WinStart =>Window shift 1 */
+	/*  2. Incoming SeqNum is larger than the WinEnd => Window shift N */
+	/*  */
+	if (SN_EQUAL(seq_num, preorder_ctrl->indicate_seq)) {
+		preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF;
+
+		#ifdef DBG_RX_SEQ
+		DBG_871X("DBG_RX_SEQ %s:%d SN_EQUAL IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
+			preorder_ctrl->indicate_seq, seq_num);
+		#endif
+	} else if (SN_LESS(wend, seq_num)) {
+		/* RT_TRACE(COMP_RX_REORDER, DBG_LOUD, ("CheckRxTsIndicateSeq(): Window Shift! IndicateSeq: %d, NewSeq: %d\n", pTS->RxIndicateSeq, NewSeqNum)); */
+		/* DbgPrint("CheckRxTsIndicateSeq(): Window Shift! IndicateSeq: %d, NewSeq: %d\n", precvpriv->indicate_seq, seq_num); */
+
+		/*  boundary situation, when seq_num cross 0xFFF */
+		if (seq_num >= (wsize - 1))
+			preorder_ctrl->indicate_seq = seq_num + 1 - wsize;
+		else
+			preorder_ctrl->indicate_seq = 0xFFF - (wsize - (seq_num + 1)) + 1;
+		pdbgpriv->dbg_rx_ampdu_window_shift_cnt++;
+		#ifdef DBG_RX_SEQ
+		DBG_871X("DBG_RX_SEQ %s:%d SN_LESS(wend, seq_num) IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
+			preorder_ctrl->indicate_seq, seq_num);
+		#endif
+	}
+
+	/* DbgPrint("exit->check_indicate_seq(): IndicateSeq: %d, NewSeq: %d\n", precvpriv->indicate_seq, seq_num); */
+
+	return true;
+}
+
+int enqueue_reorder_recvframe(struct recv_reorder_ctrl *preorder_ctrl, union recv_frame *prframe);
+int enqueue_reorder_recvframe(struct recv_reorder_ctrl *preorder_ctrl, union recv_frame *prframe)
+{
+	struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib;
+	struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
+	struct list_head	*phead, *plist;
+	union recv_frame *pnextrframe;
+	struct rx_pkt_attrib *pnextattrib;
+
+	/* DbgPrint("+enqueue_reorder_recvframe()\n"); */
+
+	/* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */
+	/* spin_lock(&ppending_recvframe_queue->lock); */
+
+
+	phead = get_list_head(ppending_recvframe_queue);
+	plist = get_next(phead);
+
+	while (phead != plist) {
+		pnextrframe = (union recv_frame *)plist;
+		pnextattrib = &pnextrframe->u.hdr.attrib;
+
+		if (SN_LESS(pnextattrib->seq_num, pattrib->seq_num))
+			plist = get_next(plist);
+		else if (SN_EQUAL(pnextattrib->seq_num, pattrib->seq_num))
+			/* Duplicate entry is found!! Do not insert current entry. */
+			/* RT_TRACE(COMP_RX_REORDER, DBG_TRACE, ("InsertRxReorderList(): Duplicate packet is dropped!! IndicateSeq: %d, NewSeq: %d\n", pTS->RxIndicateSeq, SeqNum)); */
+			/* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
+			return false;
+		else
+			break;
+
+		/* DbgPrint("enqueue_reorder_recvframe():while\n"); */
+
+	}
+
+
+	/* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */
+	/* spin_lock(&ppending_recvframe_queue->lock); */
+
+	list_del_init(&(prframe->u.hdr.list));
+
+	list_add_tail(&(prframe->u.hdr.list), plist);
+
+	/* spin_unlock(&ppending_recvframe_queue->lock); */
+	/* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
+
+
+	/* RT_TRACE(COMP_RX_REORDER, DBG_TRACE, ("InsertRxReorderList(): Pkt insert into buffer!! IndicateSeq: %d, NewSeq: %d\n", pTS->RxIndicateSeq, SeqNum)); */
+	return true;
+
+}
+
+void recv_indicatepkts_pkt_loss_cnt(struct debug_priv *pdbgpriv, u64 prev_seq, u64 current_seq);
+void recv_indicatepkts_pkt_loss_cnt(struct debug_priv *pdbgpriv, u64 prev_seq, u64 current_seq)
+{
+	if (current_seq < prev_seq)
+		pdbgpriv->dbg_rx_ampdu_loss_count += (4096 + current_seq - prev_seq);
+	else
+		pdbgpriv->dbg_rx_ampdu_loss_count += (current_seq - prev_seq);
+
+}
+int recv_indicatepkts_in_order(struct adapter *padapter, struct recv_reorder_ctrl *preorder_ctrl, int bforced);
+int recv_indicatepkts_in_order(struct adapter *padapter, struct recv_reorder_ctrl *preorder_ctrl, int bforced)
+{
+	struct list_head	*phead, *plist;
+	union recv_frame *prframe;
+	struct rx_pkt_attrib *pattrib;
+	/* u8 index = 0; */
+	int bPktInBuf = false;
+	struct recv_priv *precvpriv = &padapter->recvpriv;
+	struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
+	struct dvobj_priv *psdpriv = padapter->dvobj;
+	struct debug_priv *pdbgpriv = &psdpriv->drv_dbg;
+
+	DBG_COUNTER(padapter->rx_logs.core_rx_post_indicate_in_oder);
+
+	/* DbgPrint("+recv_indicatepkts_in_order\n"); */
+
+	/* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */
+	/* spin_lock(&ppending_recvframe_queue->lock); */
+
+	phead =		get_list_head(ppending_recvframe_queue);
+	plist = get_next(phead);
+
+	/*  Handling some condition for forced indicate case. */
+	if (bforced == true) {
+		pdbgpriv->dbg_rx_ampdu_forced_indicate_count++;
+		if (list_empty(phead)) {
+			/*  spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
+			/* spin_unlock(&ppending_recvframe_queue->lock); */
+			return true;
+		}
+
+		prframe = (union recv_frame *)plist;
+		pattrib = &prframe->u.hdr.attrib;
+
+		#ifdef DBG_RX_SEQ
+		DBG_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
+			preorder_ctrl->indicate_seq, pattrib->seq_num);
+		#endif
+		recv_indicatepkts_pkt_loss_cnt(pdbgpriv, preorder_ctrl->indicate_seq, pattrib->seq_num);
+		preorder_ctrl->indicate_seq = pattrib->seq_num;
+
+	}
+
+	/*  Prepare indication list and indication. */
+	/*  Check if there is any packet need indicate. */
+	while (!list_empty(phead)) {
+
+		prframe = (union recv_frame *)plist;
+		pattrib = &prframe->u.hdr.attrib;
+
+		if (!SN_LESS(preorder_ctrl->indicate_seq, pattrib->seq_num)) {
+			RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
+				 ("recv_indicatepkts_in_order: indicate =%d seq =%d amsdu =%d\n",
+				  preorder_ctrl->indicate_seq, pattrib->seq_num, pattrib->amsdu));
+
+			plist = get_next(plist);
+			list_del_init(&(prframe->u.hdr.list));
+
+			if (SN_EQUAL(preorder_ctrl->indicate_seq, pattrib->seq_num)) {
+				preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF;
+				#ifdef DBG_RX_SEQ
+				DBG_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
+					preorder_ctrl->indicate_seq, pattrib->seq_num);
+				#endif
+			}
+
+			/* Set this as a lock to make sure that only one thread is indicating packet. */
+			/* pTS->RxIndicateState = RXTS_INDICATE_PROCESSING; */
+
+			/*  Indicate packets */
+			/* RT_ASSERT((index<=REORDER_WIN_SIZE), ("RxReorderIndicatePacket(): Rx Reorder buffer full!!\n")); */
+
+
+			/* indicate this recv_frame */
+			/* DbgPrint("recv_indicatepkts_in_order, indicate_seq =%d, seq_num =%d\n", precvpriv->indicate_seq, pattrib->seq_num); */
+			if (!pattrib->amsdu) {
+				/* DBG_871X("recv_indicatepkts_in_order, amsdu!= 1, indicate_seq =%d, seq_num =%d\n", preorder_ctrl->indicate_seq, pattrib->seq_num); */
+
+				if ((padapter->bDriverStopped == false) &&
+				    (padapter->bSurpriseRemoved == false))
+					rtw_recv_indicatepkt(padapter, prframe);/* indicate this recv_frame */
+
+			} else if (pattrib->amsdu == 1) {
+				if (amsdu_to_msdu(padapter, prframe) != _SUCCESS)
+					rtw_free_recvframe(prframe, &precvpriv->free_recv_queue);
+
+			} else{
+				/* error condition; */
+			}
+
+
+			/* Update local variables. */
+			bPktInBuf = false;
+
+		} else{
+			bPktInBuf = true;
+			break;
+		}
+
+		/* DbgPrint("recv_indicatepkts_in_order():while\n"); */
+
+	}
+
+	/* spin_unlock(&ppending_recvframe_queue->lock); */
+	/* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
+
+	return bPktInBuf;
+}
+
+int recv_indicatepkt_reorder(struct adapter *padapter, union recv_frame *prframe);
+int recv_indicatepkt_reorder(struct adapter *padapter, union recv_frame *prframe)
+{
+	int retval = _SUCCESS;
+	struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib;
+	struct recv_reorder_ctrl *preorder_ctrl = prframe->u.hdr.preorder_ctrl;
+	struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
+	struct dvobj_priv *psdpriv = padapter->dvobj;
+	struct debug_priv *pdbgpriv = &psdpriv->drv_dbg;
+
+	DBG_COUNTER(padapter->rx_logs.core_rx_post_indicate_reoder);
+
+	if (!pattrib->amsdu) {
+		/* s1. */
+		wlanhdr_to_ethhdr(prframe);
+
+		if (pattrib->qos != 1) {
+			if ((padapter->bDriverStopped == false) &&
+			    (padapter->bSurpriseRemoved == false)) {
+				RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("@@@@  recv_indicatepkt_reorder -recv_func recv_indicatepkt\n"));
+
+				rtw_recv_indicatepkt(padapter, prframe);
+				return _SUCCESS;
+
+			}
+
+			#ifdef DBG_RX_DROP_FRAME
+			DBG_871X("DBG_RX_DROP_FRAME %s pattrib->qos != 1\n", __func__);
+			#endif
+
+			return _FAIL;
+
+		}
+
+		if (preorder_ctrl->enable == false) {
+			/* indicate this recv_frame */
+			preorder_ctrl->indicate_seq = pattrib->seq_num;
+			#ifdef DBG_RX_SEQ
+			DBG_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
+				preorder_ctrl->indicate_seq, pattrib->seq_num);
+			#endif
+
+			rtw_recv_indicatepkt(padapter, prframe);
+
+			preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096;
+			#ifdef DBG_RX_SEQ
+			DBG_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
+				preorder_ctrl->indicate_seq, pattrib->seq_num);
+			#endif
+
+			return _SUCCESS;
+		}
+	} else if (pattrib->amsdu == 1) { /* temp filter -> means didn't support A-MSDUs in a A-MPDU */
+		if (preorder_ctrl->enable == false) {
+			preorder_ctrl->indicate_seq = pattrib->seq_num;
+			#ifdef DBG_RX_SEQ
+			DBG_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
+				preorder_ctrl->indicate_seq, pattrib->seq_num);
+			#endif
+
+			retval = amsdu_to_msdu(padapter, prframe);
+
+			preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096;
+			#ifdef DBG_RX_SEQ
+			DBG_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
+				preorder_ctrl->indicate_seq, pattrib->seq_num);
+			#endif
+
+			if (retval != _SUCCESS) {
+				#ifdef DBG_RX_DROP_FRAME
+				DBG_871X("DBG_RX_DROP_FRAME %s amsdu_to_msdu fail\n", __func__);
+				#endif
+			}
+
+			return retval;
+		}
+	}
+
+	spin_lock_bh(&ppending_recvframe_queue->lock);
+
+	RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
+		 ("recv_indicatepkt_reorder: indicate =%d seq =%d\n",
+		  preorder_ctrl->indicate_seq, pattrib->seq_num));
+
+	/* s2. check if winstart_b(indicate_seq) needs to been updated */
+	if (!check_indicate_seq(preorder_ctrl, pattrib->seq_num)) {
+		pdbgpriv->dbg_rx_ampdu_drop_count++;
+		#ifdef DBG_RX_DROP_FRAME
+		DBG_871X("DBG_RX_DROP_FRAME %s check_indicate_seq fail\n", __func__);
+		#endif
+		goto _err_exit;
+	}
+
+
+	/* s3. Insert all packet into Reorder Queue to maintain its ordering. */
+	if (!enqueue_reorder_recvframe(preorder_ctrl, prframe)) {
+		/* DbgPrint("recv_indicatepkt_reorder, enqueue_reorder_recvframe fail!\n"); */
+		/* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
+		/* return _FAIL; */
+		#ifdef DBG_RX_DROP_FRAME
+		DBG_871X("DBG_RX_DROP_FRAME %s enqueue_reorder_recvframe fail\n", __func__);
+		#endif
+		goto _err_exit;
+	}
+
+
+	/* s4. */
+	/*  Indication process. */
+	/*  After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets */
+	/*  with the SeqNum smaller than latest WinStart and buffer other packets. */
+	/*  */
+	/*  For Rx Reorder condition: */
+	/*  1. All packets with SeqNum smaller than WinStart => Indicate */
+	/*  2. All packets with SeqNum larger than or equal to WinStart => Buffer it. */
+	/*  */
+
+	/* recv_indicatepkts_in_order(padapter, preorder_ctrl, true); */
+	if (recv_indicatepkts_in_order(padapter, preorder_ctrl, false) == true) {
+		_set_timer(&preorder_ctrl->reordering_ctrl_timer, REORDER_WAIT_TIME);
+		spin_unlock_bh(&ppending_recvframe_queue->lock);
+	} else{
+		spin_unlock_bh(&ppending_recvframe_queue->lock);
+		del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
+	}
+
+	return _SUCCESS;
+
+_err_exit:
+	spin_unlock_bh(&ppending_recvframe_queue->lock);
+
+	return _FAIL;
+}
+
+
+void rtw_reordering_ctrl_timeout_handler(struct timer_list *t)
+{
+	struct recv_reorder_ctrl *preorder_ctrl =
+		from_timer(preorder_ctrl, t, reordering_ctrl_timer);
+	struct adapter *padapter = preorder_ctrl->padapter;
+	struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
+
+
+	if (padapter->bDriverStopped || padapter->bSurpriseRemoved)
+		return;
+
+	/* DBG_871X("+rtw_reordering_ctrl_timeout_handler() =>\n"); */
+
+	spin_lock_bh(&ppending_recvframe_queue->lock);
+
+	if (recv_indicatepkts_in_order(padapter, preorder_ctrl, true) == true)
+		_set_timer(&preorder_ctrl->reordering_ctrl_timer, REORDER_WAIT_TIME);
+
+	spin_unlock_bh(&ppending_recvframe_queue->lock);
+
+}
+
+int process_recv_indicatepkts(struct adapter *padapter, union recv_frame *prframe);
+int process_recv_indicatepkts(struct adapter *padapter, union recv_frame *prframe)
+{
+	int retval = _SUCCESS;
+	/* struct recv_priv *precvpriv = &padapter->recvpriv; */
+	/* struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib; */
+	struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
+	struct ht_priv *phtpriv = &pmlmepriv->htpriv;
+
+	DBG_COUNTER(padapter->rx_logs.core_rx_post_indicate);
+
+	if (phtpriv->ht_option == true) { /* B/G/N Mode */
+		/* prframe->u.hdr.preorder_ctrl = &precvpriv->recvreorder_ctrl[pattrib->priority]; */
+
+		if (recv_indicatepkt_reorder(padapter, prframe) != _SUCCESS) { /*  including perform A-MPDU Rx Ordering Buffer Control */
+			#ifdef DBG_RX_DROP_FRAME
+			DBG_871X("DBG_RX_DROP_FRAME %s recv_indicatepkt_reorder error!\n", __func__);
+			#endif
+
+			if ((padapter->bDriverStopped == false) &&
+			    (padapter->bSurpriseRemoved == false)) {
+				retval = _FAIL;
+				return retval;
+			}
+		}
+	} else { /* B/G mode */
+		retval = wlanhdr_to_ethhdr(prframe);
+		if (retval != _SUCCESS) {
+			RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("wlanhdr_to_ethhdr: drop pkt\n"));
+			#ifdef DBG_RX_DROP_FRAME
+			DBG_871X("DBG_RX_DROP_FRAME %s wlanhdr_to_ethhdr error!\n", __func__);
+			#endif
+			return retval;
+		}
+
+		if ((padapter->bDriverStopped == false) && (padapter->bSurpriseRemoved == false)) {
+			/* indicate this recv_frame */
+			RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("@@@@ process_recv_indicatepkts- recv_func recv_indicatepkt\n"));
+			rtw_recv_indicatepkt(padapter, prframe);
+
+
+		} else{
+			RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("@@@@ process_recv_indicatepkts- recv_func free_indicatepkt\n"));
+
+			RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("recv_func:bDriverStopped(%d) OR bSurpriseRemoved(%d)", padapter->bDriverStopped, padapter->bSurpriseRemoved));
+			retval = _FAIL;
+			return retval;
+		}
+
+	}
+
+	return retval;
+
+}
+
+static int recv_func_prehandle(struct adapter *padapter, union recv_frame *rframe)
+{
+	int ret = _SUCCESS;
+	struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
+
+	DBG_COUNTER(padapter->rx_logs.core_rx_pre);
+
+	/* check the frame crtl field and decache */
+	ret = validate_recv_frame(padapter, rframe);
+	if (ret != _SUCCESS) {
+		RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("recv_func: validate_recv_frame fail! drop pkt\n"));
+		rtw_free_recvframe(rframe, pfree_recv_queue);/* free this recv_frame */
+		goto exit;
+	}
+
+exit:
+	return ret;
+}
+
+static int recv_func_posthandle(struct adapter *padapter, union recv_frame *prframe)
+{
+	int ret = _SUCCESS;
+	union recv_frame *orig_prframe = prframe;
+	struct recv_priv *precvpriv = &padapter->recvpriv;
+	struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
+
+	DBG_COUNTER(padapter->rx_logs.core_rx_post);
+
+	prframe = decryptor(padapter, prframe);
+	if (prframe == NULL) {
+		RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("decryptor: drop pkt\n"));
+		#ifdef DBG_RX_DROP_FRAME
+		DBG_871X("DBG_RX_DROP_FRAME %s decryptor: drop pkt\n", __func__);
+		#endif
+		ret = _FAIL;
+		DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt_err);
+		goto _recv_data_drop;
+	}
+
+	prframe = recvframe_chk_defrag(padapter, prframe);
+	if (prframe == NULL)	{
+		RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvframe_chk_defrag: drop pkt\n"));
+		#ifdef DBG_RX_DROP_FRAME
+		DBG_871X("DBG_RX_DROP_FRAME %s recvframe_chk_defrag: drop pkt\n", __func__);
+		#endif
+		DBG_COUNTER(padapter->rx_logs.core_rx_post_defrag_err);
+		goto _recv_data_drop;
+	}
+
+	prframe = portctrl(padapter, prframe);
+	if (prframe == NULL) {
+		RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("portctrl: drop pkt\n"));
+		#ifdef DBG_RX_DROP_FRAME
+		DBG_871X("DBG_RX_DROP_FRAME %s portctrl: drop pkt\n", __func__);
+		#endif
+		ret = _FAIL;
+		DBG_COUNTER(padapter->rx_logs.core_rx_post_portctrl_err);
+		goto _recv_data_drop;
+	}
+
+	count_rx_stats(padapter, prframe, NULL);
+
+	ret = process_recv_indicatepkts(padapter, prframe);
+	if (ret != _SUCCESS) {
+		RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recv_func: process_recv_indicatepkts fail!\n"));
+		#ifdef DBG_RX_DROP_FRAME
+		DBG_871X("DBG_RX_DROP_FRAME %s process_recv_indicatepkts fail!\n", __func__);
+		#endif
+		rtw_free_recvframe(orig_prframe, pfree_recv_queue);/* free this recv_frame */
+		DBG_COUNTER(padapter->rx_logs.core_rx_post_indicate_err);
+		goto _recv_data_drop;
+	}
+
+_recv_data_drop:
+	precvpriv->rx_drop++;
+	return ret;
+}
+
+
+int recv_func(struct adapter *padapter, union recv_frame *rframe);
+int recv_func(struct adapter *padapter, union recv_frame *rframe)
+{
+	int ret;
+	struct rx_pkt_attrib *prxattrib = &rframe->u.hdr.attrib;
+	struct recv_priv *recvpriv = &padapter->recvpriv;
+	struct security_priv *psecuritypriv = &padapter->securitypriv;
+	struct mlme_priv *mlmepriv = &padapter->mlmepriv;
+
+	/* check if need to handle uc_swdec_pending_queue*/
+	if (check_fwstate(mlmepriv, WIFI_STATION_STATE) && psecuritypriv->busetkipkey) {
+		union recv_frame *pending_frame;
+		int cnt = 0;
+
+		while ((pending_frame = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue))) {
+			cnt++;
+			DBG_COUNTER(padapter->rx_logs.core_rx_dequeue);
+			recv_func_posthandle(padapter, pending_frame);
+		}
+
+		if (cnt)
+			DBG_871X(FUNC_ADPT_FMT" dequeue %d from uc_swdec_pending_queue\n",
+				FUNC_ADPT_ARG(padapter), cnt);
+	}
+
+	DBG_COUNTER(padapter->rx_logs.core_rx);
+	ret = recv_func_prehandle(padapter, rframe);
+
+	if (ret == _SUCCESS) {
+
+		/* check if need to enqueue into uc_swdec_pending_queue*/
+		if (check_fwstate(mlmepriv, WIFI_STATION_STATE) &&
+			!IS_MCAST(prxattrib->ra) && prxattrib->encrypt > 0 &&
+			(prxattrib->bdecrypted == 0 || psecuritypriv->sw_decrypt == true) &&
+			psecuritypriv->ndisauthtype == Ndis802_11AuthModeWPAPSK &&
+			!psecuritypriv->busetkipkey) {
+			DBG_COUNTER(padapter->rx_logs.core_rx_enqueue);
+			rtw_enqueue_recvframe(rframe, &padapter->recvpriv.uc_swdec_pending_queue);
+			/* DBG_871X("%s: no key, enqueue uc_swdec_pending_queue\n", __func__); */
+
+			if (recvpriv->free_recvframe_cnt < NR_RECVFRAME/4) {
+				/* to prevent from recvframe starvation, get recvframe from uc_swdec_pending_queue to free_recvframe_cnt  */
+				rframe = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue);
+				if (rframe)
+					goto do_posthandle;
+			}
+			goto exit;
+		}
+
+do_posthandle:
+		ret = recv_func_posthandle(padapter, rframe);
+	}
+
+exit:
+	return ret;
+}
+
+
+s32 rtw_recv_entry(union recv_frame *precvframe)
+{
+	struct adapter *padapter;
+	struct recv_priv *precvpriv;
+	s32 ret = _SUCCESS;
+
+/* 	RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("+rtw_recv_entry\n")); */
+
+	padapter = precvframe->u.hdr.adapter;
+
+	precvpriv = &padapter->recvpriv;
+
+	ret = recv_func(padapter, precvframe);
+	if (ret == _FAIL) {
+		RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("rtw_recv_entry: recv_func return fail!!!\n"));
+		goto _recv_entry_drop;
+	}
+
+
+	precvpriv->rx_pkts++;
+
+	return ret;
+
+_recv_entry_drop:
+
+	/* RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("_recv_entry_drop\n")); */
+
+	return ret;
+}
+
+static void rtw_signal_stat_timer_hdl(struct timer_list *t)
+{
+	struct adapter *adapter =
+		from_timer(adapter, t, recvpriv.signal_stat_timer);
+	struct recv_priv *recvpriv = &adapter->recvpriv;
+
+	u32 tmp_s, tmp_q;
+	u8 avg_signal_strength = 0;
+	u8 avg_signal_qual = 0;
+	u32 num_signal_strength = 0;
+	u32 num_signal_qual = 0;
+	u8 _alpha = 5; /*  this value is based on converging_constant = 5000 and sampling_interval = 1000 */
+
+	if (adapter->recvpriv.is_signal_dbg) {
+		/* update the user specific value, signal_strength_dbg, to signal_strength, rssi */
+		adapter->recvpriv.signal_strength = adapter->recvpriv.signal_strength_dbg;
+		adapter->recvpriv.rssi = (s8)translate_percentage_to_dbm((u8)adapter->recvpriv.signal_strength_dbg);
+	} else {
+
+		if (recvpriv->signal_strength_data.update_req == 0) {/*  update_req is clear, means we got rx */
+			avg_signal_strength = recvpriv->signal_strength_data.avg_val;
+			num_signal_strength = recvpriv->signal_strength_data.total_num;
+			/*  after avg_vals are accquired, we can re-stat the signal values */
+			recvpriv->signal_strength_data.update_req = 1;
+		}
+
+		if (recvpriv->signal_qual_data.update_req == 0) {/*  update_req is clear, means we got rx */
+			avg_signal_qual = recvpriv->signal_qual_data.avg_val;
+			num_signal_qual = recvpriv->signal_qual_data.total_num;
+			/*  after avg_vals are accquired, we can re-stat the signal values */
+			recvpriv->signal_qual_data.update_req = 1;
+		}
+
+		if (num_signal_strength == 0) {
+			if (rtw_get_on_cur_ch_time(adapter) == 0
+				|| jiffies_to_msecs(jiffies - rtw_get_on_cur_ch_time(adapter)) < 2 * adapter->mlmeextpriv.mlmext_info.bcn_interval
+			) {
+				goto set_timer;
+			}
+		}
+
+		if (check_fwstate(&adapter->mlmepriv, _FW_UNDER_SURVEY) == true
+			|| check_fwstate(&adapter->mlmepriv, _FW_LINKED) == false
+		) {
+			goto set_timer;
+		}
+
+		/* update value of signal_strength, rssi, signal_qual */
+		tmp_s = (avg_signal_strength+(_alpha-1)*recvpriv->signal_strength);
+		if (tmp_s % _alpha)
+			tmp_s = tmp_s/_alpha + 1;
+		else
+			tmp_s = tmp_s/_alpha;
+		if (tmp_s > 100)
+			tmp_s = 100;
+
+		tmp_q = (avg_signal_qual+(_alpha-1)*recvpriv->signal_qual);
+		if (tmp_q % _alpha)
+			tmp_q = tmp_q/_alpha + 1;
+		else
+			tmp_q = tmp_q/_alpha;
+		if (tmp_q > 100)
+			tmp_q = 100;
+
+		recvpriv->signal_strength = tmp_s;
+		recvpriv->rssi = (s8)translate_percentage_to_dbm(tmp_s);
+		recvpriv->signal_qual = tmp_q;
+
+		#if defined(DBG_RX_SIGNAL_DISPLAY_PROCESSING) && 1
+		DBG_871X(FUNC_ADPT_FMT" signal_strength:%3u, rssi:%3d, signal_qual:%3u"
+			", num_signal_strength:%u, num_signal_qual:%u"
+			", on_cur_ch_ms:%d"
+			"\n"
+			, FUNC_ADPT_ARG(adapter)
+			, recvpriv->signal_strength
+			, recvpriv->rssi
+			, recvpriv->signal_qual
+			, num_signal_strength, num_signal_qual
+			, rtw_get_on_cur_ch_time(adapter) ? jiffies_to_msecs(jiffies - rtw_get_on_cur_ch_time(adapter)) : 0
+		);
+		#endif
+	}
+
+set_timer:
+	rtw_set_signal_stat_timer(recvpriv);
+
+}