staging: Add rtl8723bs sdio wifi driver

The rtl8723bs is found on quite a few systems used by Linux users,
such as on Atom systems (Intel Computestick and various other
Atom based devices) and on many (budget) ARM boards such as
the CHIP.

The plan moving forward with this is for the new clean,
written from scratch, rtl8xxxu driver to eventually gain
support for sdio devices. But there is no clear timeline
for that, so lets add this driver included in staging for now.

Cc: Bastien Nocera <hadess@hadess.net>
Cc: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Jes Sorensen <jes.sorensen@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 641 insertions, 0 deletions

diff --git a/drivers/staging/rtl8723bs/core/rtw_sta_mgt.c b/drivers/staging/rtl8723bs/core/rtw_sta_mgt.c
new file mode 100644
index 000000000000..d7eee6dd7e3b
--- /dev/null
+++ b/drivers/staging/rtl8723bs/core/rtw_sta_mgt.c
@@ -0,0 +1,641 @@
+/******************************************************************************
+ *
+ * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ ******************************************************************************/
+#define _RTW_STA_MGT_C_
+
+#include <drv_types.h>
+#include <rtw_debug.h>
+
+void _rtw_init_stainfo(struct sta_info *psta);
+void _rtw_init_stainfo(struct sta_info *psta)
+{
+	memset((u8 *)psta, 0, sizeof(struct sta_info));
+
+	 spin_lock_init(&psta->lock);
+	INIT_LIST_HEAD(&psta->list);
+	INIT_LIST_HEAD(&psta->hash_list);
+	/* INIT_LIST_HEAD(&psta->asoc_list); */
+	/* INIT_LIST_HEAD(&psta->sleep_list); */
+	/* INIT_LIST_HEAD(&psta->wakeup_list); */
+
+	_rtw_init_queue(&psta->sleep_q);
+	psta->sleepq_len = 0;
+
+	_rtw_init_sta_xmit_priv(&psta->sta_xmitpriv);
+	_rtw_init_sta_recv_priv(&psta->sta_recvpriv);
+
+	INIT_LIST_HEAD(&psta->asoc_list);
+
+	INIT_LIST_HEAD(&psta->auth_list);
+
+	psta->expire_to = 0;
+
+	psta->flags = 0;
+
+	psta->capability = 0;
+
+	psta->bpairwise_key_installed = false;
+
+	psta->nonerp_set = 0;
+	psta->no_short_slot_time_set = 0;
+	psta->no_short_preamble_set = 0;
+	psta->no_ht_gf_set = 0;
+	psta->no_ht_set = 0;
+	psta->ht_20mhz_set = 0;
+
+	psta->under_exist_checking = 0;
+
+	psta->keep_alive_trycnt = 0;
+}
+
+u32 _rtw_init_sta_priv(struct	sta_priv *pstapriv)
+{
+	struct sta_info *psta;
+	s32 i;
+
+	pstapriv->pallocated_stainfo_buf = vzalloc(sizeof(struct sta_info) * NUM_STA+4);
+
+	if (!pstapriv->pallocated_stainfo_buf)
+		return _FAIL;
+
+	pstapriv->pstainfo_buf = pstapriv->pallocated_stainfo_buf + 4 -
+		((SIZE_PTR)(pstapriv->pallocated_stainfo_buf) & 3);
+
+	_rtw_init_queue(&pstapriv->free_sta_queue);
+
+	spin_lock_init(&pstapriv->sta_hash_lock);
+
+	/* _rtw_init_queue(&pstapriv->asoc_q); */
+	pstapriv->asoc_sta_count = 0;
+	_rtw_init_queue(&pstapriv->sleep_q);
+	_rtw_init_queue(&pstapriv->wakeup_q);
+
+	psta = (struct sta_info *)(pstapriv->pstainfo_buf);
+
+
+	for (i = 0; i < NUM_STA; i++) {
+		_rtw_init_stainfo(psta);
+
+		INIT_LIST_HEAD(&(pstapriv->sta_hash[i]));
+
+		list_add_tail(&psta->list, get_list_head(&pstapriv->free_sta_queue));
+
+		psta++;
+	}
+
+	pstapriv->sta_dz_bitmap = 0;
+	pstapriv->tim_bitmap = 0;
+
+	INIT_LIST_HEAD(&pstapriv->asoc_list);
+	INIT_LIST_HEAD(&pstapriv->auth_list);
+	spin_lock_init(&pstapriv->asoc_list_lock);
+	spin_lock_init(&pstapriv->auth_list_lock);
+	pstapriv->asoc_list_cnt = 0;
+	pstapriv->auth_list_cnt = 0;
+
+	pstapriv->auth_to = 3; /*  3*2 = 6 sec */
+	pstapriv->assoc_to = 3;
+	pstapriv->expire_to = 3; /*  3*2 = 6 sec */
+	pstapriv->max_num_sta = NUM_STA;
+	return _SUCCESS;
+}
+
+inline int rtw_stainfo_offset(struct sta_priv *stapriv, struct sta_info *sta)
+{
+	int offset = (((u8 *)sta) - stapriv->pstainfo_buf)/sizeof(struct sta_info);
+
+	if (!stainfo_offset_valid(offset))
+		DBG_871X("%s invalid offset(%d), out of range!!!", __func__, offset);
+
+	return offset;
+}
+
+inline struct sta_info *rtw_get_stainfo_by_offset(struct sta_priv *stapriv, int offset)
+{
+	if (!stainfo_offset_valid(offset))
+		DBG_871X("%s invalid offset(%d), out of range!!!", __func__, offset);
+
+	return (struct sta_info *)(stapriv->pstainfo_buf + offset * sizeof(struct sta_info));
+}
+
+/*  this function is used to free the memory of lock || sema for all stainfos */
+void kfree_all_stainfo(struct sta_priv *pstapriv);
+void kfree_all_stainfo(struct sta_priv *pstapriv)
+{
+	struct list_head	*plist, *phead;
+	struct sta_info *psta = NULL;
+
+	spin_lock_bh(&pstapriv->sta_hash_lock);
+
+	phead = get_list_head(&pstapriv->free_sta_queue);
+	plist = get_next(phead);
+
+	while (phead != plist) {
+		psta = LIST_CONTAINOR(plist, struct sta_info, list);
+		plist = get_next(plist);
+	}
+
+	spin_unlock_bh(&pstapriv->sta_hash_lock);
+}
+
+void kfree_sta_priv_lock(struct	sta_priv *pstapriv);
+void kfree_sta_priv_lock(struct	sta_priv *pstapriv)
+{
+	 kfree_all_stainfo(pstapriv); /* be done before free sta_hash_lock */
+}
+
+u32 _rtw_free_sta_priv(struct	sta_priv *pstapriv)
+{
+	struct list_head	*phead, *plist;
+	struct sta_info *psta = NULL;
+	struct recv_reorder_ctrl *preorder_ctrl;
+	int	index;
+
+	if (pstapriv) {
+
+		/*delete all reordering_ctrl_timer		*/
+		spin_lock_bh(&pstapriv->sta_hash_lock);
+		for (index = 0; index < NUM_STA; index++) {
+			phead = &(pstapriv->sta_hash[index]);
+			plist = get_next(phead);
+
+			while (phead != plist) {
+				int i;
+				psta = LIST_CONTAINOR(plist, struct sta_info, hash_list);
+				plist = get_next(plist);
+
+				for (i = 0; i < 16 ; i++) {
+					preorder_ctrl = &psta->recvreorder_ctrl[i];
+					del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
+				}
+			}
+		}
+		spin_unlock_bh(&pstapriv->sta_hash_lock);
+		/*===============================*/
+
+		kfree_sta_priv_lock(pstapriv);
+
+		if (pstapriv->pallocated_stainfo_buf)
+			vfree(pstapriv->pallocated_stainfo_buf);
+
+	}
+	return _SUCCESS;
+}
+
+/* struct	sta_info *rtw_alloc_stainfo(_queue *pfree_sta_queue, unsigned char *hwaddr) */
+struct	sta_info *rtw_alloc_stainfo(struct	sta_priv *pstapriv, u8 *hwaddr)
+{
+	uint tmp_aid;
+	s32	index;
+	struct list_head	*phash_list;
+	struct sta_info *psta;
+	struct __queue *pfree_sta_queue;
+	struct recv_reorder_ctrl *preorder_ctrl;
+	int i = 0;
+	u16  wRxSeqInitialValue = 0xffff;
+
+	pfree_sta_queue = &pstapriv->free_sta_queue;
+
+	/* spin_lock_bh(&(pfree_sta_queue->lock)); */
+	spin_lock_bh(&(pstapriv->sta_hash_lock));
+	if (list_empty(&pfree_sta_queue->queue)) {
+		/* spin_unlock_bh(&(pfree_sta_queue->lock)); */
+		spin_unlock_bh(&(pstapriv->sta_hash_lock));
+		psta = NULL;
+		return psta;
+	} else{
+		psta = LIST_CONTAINOR(get_next(&pfree_sta_queue->queue), struct sta_info, list);
+
+		list_del_init(&(psta->list));
+
+		/* spin_unlock_bh(&(pfree_sta_queue->lock)); */
+
+		tmp_aid = psta->aid;
+
+		_rtw_init_stainfo(psta);
+
+		psta->padapter = pstapriv->padapter;
+
+		memcpy(psta->hwaddr, hwaddr, ETH_ALEN);
+
+		index = wifi_mac_hash(hwaddr);
+
+		RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_info_, ("rtw_alloc_stainfo: index  = %x", index));
+
+		if (index >= NUM_STA) {
+			RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_err_, ("ERROR => rtw_alloc_stainfo: index >= NUM_STA"));
+			spin_unlock_bh(&(pstapriv->sta_hash_lock));
+			psta = NULL;
+			goto exit;
+		}
+		phash_list = &(pstapriv->sta_hash[index]);
+
+		/* spin_lock_bh(&(pstapriv->sta_hash_lock)); */
+
+		list_add_tail(&psta->hash_list, phash_list);
+
+		pstapriv->asoc_sta_count++;
+
+		/* spin_unlock_bh(&(pstapriv->sta_hash_lock)); */
+
+/*  Commented by Albert 2009/08/13 */
+/*  For the SMC router, the sequence number of first packet of WPS handshake will be 0. */
+/*  In this case, this packet will be dropped by recv_decache function if we use the 0x00 as the default value for tid_rxseq variable. */
+/*  So, we initialize the tid_rxseq variable as the 0xffff. */
+
+		for (i = 0; i < 16; i++) {
+			memcpy(&psta->sta_recvpriv.rxcache.tid_rxseq[i], &wRxSeqInitialValue, 2);
+		}
+
+		RT_TRACE(
+			_module_rtl871x_sta_mgt_c_,
+			_drv_info_, (
+				"alloc number_%d stainfo  with hwaddr = %x %x %x %x %x %x \n",
+				pstapriv->asoc_sta_count,
+				hwaddr[0],
+				hwaddr[1],
+				hwaddr[2],
+				hwaddr[3],
+				hwaddr[4],
+				hwaddr[5]
+			)
+		);
+
+		init_addba_retry_timer(pstapriv->padapter, psta);
+
+		/* for A-MPDU Rx reordering buffer control */
+		for (i = 0; i < 16 ; i++) {
+			preorder_ctrl = &psta->recvreorder_ctrl[i];
+
+			preorder_ctrl->padapter = pstapriv->padapter;
+
+			preorder_ctrl->enable = false;
+
+			preorder_ctrl->indicate_seq = 0xffff;
+			#ifdef DBG_RX_SEQ
+			DBG_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d\n", __func__, __LINE__,
+				preorder_ctrl->indicate_seq);
+			#endif
+			preorder_ctrl->wend_b = 0xffff;
+			/* preorder_ctrl->wsize_b = (NR_RECVBUFF-2); */
+			preorder_ctrl->wsize_b = 64;/* 64; */
+
+			_rtw_init_queue(&preorder_ctrl->pending_recvframe_queue);
+
+			rtw_init_recv_timer(preorder_ctrl);
+		}
+
+
+		/* init for DM */
+		psta->rssi_stat.UndecoratedSmoothedPWDB = (-1);
+		psta->rssi_stat.UndecoratedSmoothedCCK = (-1);
+
+		/* init for the sequence number of received management frame */
+		psta->RxMgmtFrameSeqNum = 0xffff;
+		spin_unlock_bh(&(pstapriv->sta_hash_lock));
+		/* alloc mac id for non-bc/mc station, */
+		rtw_alloc_macid(pstapriv->padapter, psta);
+
+	}
+
+exit:
+
+
+	return psta;
+}
+
+/*  using pstapriv->sta_hash_lock to protect */
+u32 rtw_free_stainfo(struct adapter *padapter, struct sta_info *psta)
+{
+	int i;
+	struct __queue *pfree_sta_queue;
+	struct recv_reorder_ctrl *preorder_ctrl;
+	struct	sta_xmit_priv *pstaxmitpriv;
+	struct	xmit_priv *pxmitpriv = &padapter->xmitpriv;
+	struct	sta_priv *pstapriv = &padapter->stapriv;
+	struct hw_xmit *phwxmit;
+
+	if (psta == NULL)
+		goto exit;
+
+
+	spin_lock_bh(&psta->lock);
+	psta->state &= ~_FW_LINKED;
+	spin_unlock_bh(&psta->lock);
+
+	pfree_sta_queue = &pstapriv->free_sta_queue;
+
+
+	pstaxmitpriv = &psta->sta_xmitpriv;
+
+	/* list_del_init(&psta->sleep_list); */
+
+	/* list_del_init(&psta->wakeup_list); */
+
+	spin_lock_bh(&pxmitpriv->lock);
+
+	rtw_free_xmitframe_queue(pxmitpriv, &psta->sleep_q);
+	psta->sleepq_len = 0;
+
+	/* vo */
+	/* spin_lock_bh(&(pxmitpriv->vo_pending.lock)); */
+	rtw_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->vo_q.sta_pending);
+	list_del_init(&(pstaxmitpriv->vo_q.tx_pending));
+	phwxmit = pxmitpriv->hwxmits;
+	phwxmit->accnt -= pstaxmitpriv->vo_q.qcnt;
+	pstaxmitpriv->vo_q.qcnt = 0;
+	/* spin_unlock_bh(&(pxmitpriv->vo_pending.lock)); */
+
+	/* vi */
+	/* spin_lock_bh(&(pxmitpriv->vi_pending.lock)); */
+	rtw_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->vi_q.sta_pending);
+	list_del_init(&(pstaxmitpriv->vi_q.tx_pending));
+	phwxmit = pxmitpriv->hwxmits+1;
+	phwxmit->accnt -= pstaxmitpriv->vi_q.qcnt;
+	pstaxmitpriv->vi_q.qcnt = 0;
+	/* spin_unlock_bh(&(pxmitpriv->vi_pending.lock)); */
+
+	/* be */
+	/* spin_lock_bh(&(pxmitpriv->be_pending.lock)); */
+	rtw_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->be_q.sta_pending);
+	list_del_init(&(pstaxmitpriv->be_q.tx_pending));
+	phwxmit = pxmitpriv->hwxmits+2;
+	phwxmit->accnt -= pstaxmitpriv->be_q.qcnt;
+	pstaxmitpriv->be_q.qcnt = 0;
+	/* spin_unlock_bh(&(pxmitpriv->be_pending.lock)); */
+
+	/* bk */
+	/* spin_lock_bh(&(pxmitpriv->bk_pending.lock)); */
+	rtw_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->bk_q.sta_pending);
+	list_del_init(&(pstaxmitpriv->bk_q.tx_pending));
+	phwxmit = pxmitpriv->hwxmits+3;
+	phwxmit->accnt -= pstaxmitpriv->bk_q.qcnt;
+	pstaxmitpriv->bk_q.qcnt = 0;
+	/* spin_unlock_bh(&(pxmitpriv->bk_pending.lock)); */
+
+	spin_unlock_bh(&pxmitpriv->lock);
+
+	list_del_init(&psta->hash_list);
+	RT_TRACE(
+		_module_rtl871x_sta_mgt_c_,
+		_drv_err_, (
+			"\n free number_%d stainfo  with hwaddr = 0x%.2x 0x%.2x 0x%.2x 0x%.2x 0x%.2x 0x%.2x \n",
+			pstapriv->asoc_sta_count,
+			psta->hwaddr[0],
+			psta->hwaddr[1],
+			psta->hwaddr[2],
+			psta->hwaddr[3],
+			psta->hwaddr[4],
+			psta->hwaddr[5]
+		)
+	);
+	pstapriv->asoc_sta_count--;
+
+
+	/*  re-init sta_info; 20061114 will be init in alloc_stainfo */
+	/* _rtw_init_sta_xmit_priv(&psta->sta_xmitpriv); */
+	/* _rtw_init_sta_recv_priv(&psta->sta_recvpriv); */
+
+	del_timer_sync(&psta->addba_retry_timer);
+
+	/* for A-MPDU Rx reordering buffer control, cancel reordering_ctrl_timer */
+	for (i = 0; i < 16 ; i++) {
+		struct list_head	*phead, *plist;
+		union recv_frame *prframe;
+		struct __queue *ppending_recvframe_queue;
+		struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
+
+		preorder_ctrl = &psta->recvreorder_ctrl[i];
+
+		del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
+
+
+		ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
+
+		spin_lock_bh(&ppending_recvframe_queue->lock);
+
+		phead =		get_list_head(ppending_recvframe_queue);
+		plist = get_next(phead);
+
+		while (!list_empty(phead)) {
+			prframe = LIST_CONTAINOR(plist, union recv_frame, u);
+
+			plist = get_next(plist);
+
+			list_del_init(&(prframe->u.hdr.list));
+
+			rtw_free_recvframe(prframe, pfree_recv_queue);
+		}
+
+		spin_unlock_bh(&ppending_recvframe_queue->lock);
+
+	}
+
+	if (!(psta->state & WIFI_AP_STATE))
+		rtw_hal_set_odm_var(padapter, HAL_ODM_STA_INFO, psta, false);
+
+
+	/* release mac id for non-bc/mc station, */
+	rtw_release_macid(pstapriv->padapter, psta);
+
+/*
+	spin_lock_bh(&pstapriv->asoc_list_lock);
+	list_del_init(&psta->asoc_list);
+	spin_unlock_bh(&pstapriv->asoc_list_lock);
+*/
+	spin_lock_bh(&pstapriv->auth_list_lock);
+	if (!list_empty(&psta->auth_list)) {
+		list_del_init(&psta->auth_list);
+		pstapriv->auth_list_cnt--;
+	}
+	spin_unlock_bh(&pstapriv->auth_list_lock);
+
+	psta->expire_to = 0;
+	psta->sleepq_ac_len = 0;
+	psta->qos_info = 0;
+
+	psta->max_sp_len = 0;
+	psta->uapsd_bk = 0;
+	psta->uapsd_be = 0;
+	psta->uapsd_vi = 0;
+	psta->uapsd_vo = 0;
+
+	psta->has_legacy_ac = 0;
+
+	pstapriv->sta_dz_bitmap &= ~BIT(psta->aid);
+	pstapriv->tim_bitmap &= ~BIT(psta->aid);
+
+	if ((psta->aid > 0) && (pstapriv->sta_aid[psta->aid - 1] == psta)) {
+		pstapriv->sta_aid[psta->aid - 1] = NULL;
+		psta->aid = 0;
+	}
+
+	psta->under_exist_checking = 0;
+
+	/* spin_lock_bh(&(pfree_sta_queue->lock)); */
+	list_add_tail(&psta->list, get_list_head(pfree_sta_queue));
+	/* spin_unlock_bh(&(pfree_sta_queue->lock)); */
+
+exit:
+	return _SUCCESS;
+}
+
+/*  free all stainfo which in sta_hash[all] */
+void rtw_free_all_stainfo(struct adapter *padapter)
+{
+	struct list_head	*plist, *phead;
+	s32	index;
+	struct sta_info *psta = NULL;
+	struct	sta_priv *pstapriv = &padapter->stapriv;
+	struct sta_info *pbcmc_stainfo = rtw_get_bcmc_stainfo(padapter);
+
+	if (pstapriv->asoc_sta_count == 1)
+		return;
+
+	spin_lock_bh(&pstapriv->sta_hash_lock);
+
+	for (index = 0; index < NUM_STA; index++) {
+		phead = &(pstapriv->sta_hash[index]);
+		plist = get_next(phead);
+
+		while (phead != plist) {
+			psta = LIST_CONTAINOR(plist, struct sta_info, hash_list);
+
+			plist = get_next(plist);
+
+			if (pbcmc_stainfo != psta)
+				rtw_free_stainfo(padapter, psta);
+
+		}
+	}
+
+	spin_unlock_bh(&pstapriv->sta_hash_lock);
+}
+
+/* any station allocated can be searched by hash list */
+struct sta_info *rtw_get_stainfo(struct sta_priv *pstapriv, u8 *hwaddr)
+{
+	struct list_head	*plist, *phead;
+	struct sta_info *psta = NULL;
+	u32 index;
+	u8 *addr;
+	u8 bc_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
+
+	if (hwaddr == NULL)
+		return NULL;
+
+	if (IS_MCAST(hwaddr))
+		addr = bc_addr;
+	else
+		addr = hwaddr;
+
+	index = wifi_mac_hash(addr);
+
+	spin_lock_bh(&pstapriv->sta_hash_lock);
+
+	phead = &(pstapriv->sta_hash[index]);
+	plist = get_next(phead);
+
+
+	while (phead != plist) {
+
+		psta = LIST_CONTAINOR(plist, struct sta_info, hash_list);
+
+		if ((!memcmp(psta->hwaddr, addr, ETH_ALEN)))
+		 /*  if found the matched address */
+			break;
+
+		psta = NULL;
+		plist = get_next(plist);
+	}
+
+	spin_unlock_bh(&pstapriv->sta_hash_lock);
+	return psta;
+}
+
+u32 rtw_init_bcmc_stainfo(struct adapter *padapter)
+{
+
+	struct sta_info *psta;
+	struct tx_servq	*ptxservq;
+	u32 res = _SUCCESS;
+	NDIS_802_11_MAC_ADDRESS	bcast_addr = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
+
+	struct	sta_priv *pstapriv = &padapter->stapriv;
+	/* struct __queue	*pstapending = &padapter->xmitpriv.bm_pending; */
+
+	psta = rtw_alloc_stainfo(pstapriv, bcast_addr);
+
+	if (psta == NULL) {
+		res = _FAIL;
+		RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_err_, ("rtw_alloc_stainfo fail"));
+		goto exit;
+	}
+
+	/*  default broadcast & multicast use macid 1 */
+	psta->mac_id = 1;
+
+	ptxservq = &(psta->sta_xmitpriv.be_q);
+exit:
+	return _SUCCESS;
+}
+
+
+struct sta_info *rtw_get_bcmc_stainfo(struct adapter *padapter)
+{
+	struct sta_info *psta;
+	struct sta_priv *pstapriv = &padapter->stapriv;
+	u8 bc_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
+
+	psta = rtw_get_stainfo(pstapriv, bc_addr);
+	return psta;
+}
+
+u8 rtw_access_ctrl(struct adapter *padapter, u8 *mac_addr)
+{
+	u8 res = true;
+	struct list_head	*plist, *phead;
+	struct rtw_wlan_acl_node *paclnode;
+	u8 match = false;
+	struct sta_priv *pstapriv = &padapter->stapriv;
+	struct wlan_acl_pool *pacl_list = &pstapriv->acl_list;
+	struct __queue	*pacl_node_q = &pacl_list->acl_node_q;
+
+	spin_lock_bh(&(pacl_node_q->lock));
+	phead = get_list_head(pacl_node_q);
+	plist = get_next(phead);
+	while (phead != plist) {
+		paclnode = LIST_CONTAINOR(plist, struct rtw_wlan_acl_node, list);
+		plist = get_next(plist);
+
+		if (!memcmp(paclnode->addr, mac_addr, ETH_ALEN))
+			if (paclnode->valid == true) {
+				match = true;
+				break;
+			}
+
+	}
+	spin_unlock_bh(&(pacl_node_q->lock));
+
+
+	if (pacl_list->mode == 1) /* accept unless in deny list */
+		res = (match == true) ?  false:true;
+
+	else if (pacl_list->mode == 2)/* deny unless in accept list */
+		res = (match == true) ?  true:false;
+	else
+		 res = true;
+
+	return res;
+}