[mirror_ubuntu-artful-kernel.git] / drivers / staging / rtl8712 / rtl871x_sta_mgt.c

/******************************************************************************
 * rtl871x_sta_mgt.c
 *
 * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
 * Linux device driver for RTL8192SU
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
 *
 * Modifications for inclusion into the Linux staging tree are
 * Copyright(c) 2010 Larry Finger. All rights reserved.
 *
 * Contact information:
 * WLAN FAE <wlanfae@realtek.com>
 * Larry Finger <Larry.Finger@lwfinger.net>
 *
 ******************************************************************************/

#define _RTL871X_STA_MGT_C_

#include "osdep_service.h"
#include "drv_types.h"
#include "recv_osdep.h"
#include "xmit_osdep.h"
#include "sta_info.h"

static void _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);
	_r8712_init_sta_xmit_priv(&psta->sta_xmitpriv);
	_r8712_init_sta_recv_priv(&psta->sta_recvpriv);
	INIT_LIST_HEAD(&psta->asoc_list);
	INIT_LIST_HEAD(&psta->auth_list);
}

u32 _r8712_init_sta_priv(struct	sta_priv *pstapriv)
{
	struct sta_info *psta;
	s32 i;

	pstapriv->pallocated_stainfo_buf = kmalloc(sizeof(struct sta_info) *
						   NUM_STA + 4, GFP_ATOMIC);
	if (pstapriv->pallocated_stainfo_buf == NULL)
		return _FAIL;
	pstapriv->pstainfo_buf = pstapriv->pallocated_stainfo_buf + 4 -
		((addr_t)(pstapriv->pallocated_stainfo_buf) & 3);
	_init_queue(&pstapriv->free_sta_queue);
	spin_lock_init(&pstapriv->sta_hash_lock);
	pstapriv->asoc_sta_count = 0;
	_init_queue(&pstapriv->sleep_q);
	_init_queue(&pstapriv->wakeup_q);
	psta = (struct sta_info *)(pstapriv->pstainfo_buf);
	for (i = 0; i < NUM_STA; i++) {
		_init_stainfo(psta);
		INIT_LIST_HEAD(&(pstapriv->sta_hash[i]));
		list_add_tail(&psta->list, &pstapriv->free_sta_queue.queue);
		psta++;
	}
	INIT_LIST_HEAD(&pstapriv->asoc_list);
	INIT_LIST_HEAD(&pstapriv->auth_list);
	return _SUCCESS;
}

/* this function is used to free the memory of lock || sema for all stainfos */
static void mfree_all_stainfo(struct sta_priv *pstapriv)
{
	unsigned long irqL;
	struct list_head *plist, *phead;

	spin_lock_irqsave(&pstapriv->sta_hash_lock, irqL);
	phead = &pstapriv->free_sta_queue.queue;
	plist = phead->next;
	while ((end_of_queue_search(phead, plist)) == false)
		plist = plist->next;

	spin_unlock_irqrestore(&pstapriv->sta_hash_lock, irqL);
}


static void mfree_sta_priv_lock(struct	sta_priv *pstapriv)
{
	 mfree_all_stainfo(pstapriv); /* be done before free sta_hash_lock */
}

u32 _r8712_free_sta_priv(struct sta_priv *pstapriv)
{
	if (pstapriv) {
		mfree_sta_priv_lock(pstapriv);
		kfree(pstapriv->pallocated_stainfo_buf);
	}
	return _SUCCESS;
}

struct sta_info *r8712_alloc_stainfo(struct sta_priv *pstapriv, u8 *hwaddr)
{
	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;
	unsigned long flags;

	pfree_sta_queue = &pstapriv->free_sta_queue;
	spin_lock_irqsave(&(pfree_sta_queue->lock), flags);
	if (list_empty(&pfree_sta_queue->queue))
		psta = NULL;
	else {
		psta = LIST_CONTAINOR(pfree_sta_queue->queue.next,
				      struct sta_info, list);
		list_del_init(&(psta->list));
		_init_stainfo(psta);
		memcpy(psta->hwaddr, hwaddr, ETH_ALEN);
		index = wifi_mac_hash(hwaddr);
		if (index >= NUM_STA) {
			psta = NULL;
			goto exit;
		}
		phash_list = &(pstapriv->sta_hash[index]);
		list_add_tail(&psta->hash_list, phash_list);
		pstapriv->asoc_sta_count++;

/* 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);
		/* 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->indicate_seq = 0xffff;
			preorder_ctrl->wend_b = 0xffff;
			preorder_ctrl->wsize_b = 64;
			_init_queue(&preorder_ctrl->pending_recvframe_queue);
			r8712_init_recv_timer(preorder_ctrl);
		}
	}
exit:
	spin_unlock_irqrestore(&(pfree_sta_queue->lock), flags);
	return psta;
}

/* using pstapriv->sta_hash_lock to protect */
void r8712_free_stainfo(struct _adapter *padapter, struct sta_info *psta)
{
	int i;
	unsigned long irqL0;
	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;

	if (psta == NULL)
		return;
	pfree_sta_queue = &pstapriv->free_sta_queue;
	pstaxmitpriv = &psta->sta_xmitpriv;
	spin_lock_irqsave(&(pxmitpriv->vo_pending.lock), irqL0);
	r8712_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->vo_q.sta_pending);
	list_del_init(&(pstaxmitpriv->vo_q.tx_pending));
	spin_unlock_irqrestore(&(pxmitpriv->vo_pending.lock), irqL0);
	spin_lock_irqsave(&(pxmitpriv->vi_pending.lock), irqL0);
	r8712_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->vi_q.sta_pending);
	list_del_init(&(pstaxmitpriv->vi_q.tx_pending));
	spin_unlock_irqrestore(&(pxmitpriv->vi_pending.lock), irqL0);
	spin_lock_irqsave(&(pxmitpriv->bk_pending.lock), irqL0);
	r8712_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->bk_q.sta_pending);
	list_del_init(&(pstaxmitpriv->bk_q.tx_pending));
	spin_unlock_irqrestore(&(pxmitpriv->bk_pending.lock), irqL0);
	spin_lock_irqsave(&(pxmitpriv->be_pending.lock), irqL0);
	r8712_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->be_q.sta_pending);
	list_del_init(&(pstaxmitpriv->be_q.tx_pending));
	spin_unlock_irqrestore(&(pxmitpriv->be_pending.lock), irqL0);
	list_del_init(&psta->hash_list);
	pstapriv->asoc_sta_count--;
	/* re-init sta_info; 20061114 */
	_r8712_init_sta_xmit_priv(&psta->sta_xmitpriv);
	_r8712_init_sta_recv_priv(&psta->sta_recvpriv);
	/* for A-MPDU Rx reordering buffer control,
	 * cancel reordering_ctrl_timer */
	for (i = 0; i < 16; i++) {
		preorder_ctrl = &psta->recvreorder_ctrl[i];
		del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
	}
	spin_lock(&(pfree_sta_queue->lock));
	/* insert into free_sta_queue; 20061114 */
	list_add_tail(&psta->list, &pfree_sta_queue->queue);
	spin_unlock(&(pfree_sta_queue->lock));
}

/* free all stainfo which in sta_hash[all] */
void r8712_free_all_stainfo(struct _adapter *padapter)
{
	unsigned long irqL;
	struct list_head *plist, *phead;
	s32 index;
	struct sta_info *psta = NULL;
	struct	sta_priv *pstapriv = &padapter->stapriv;
	struct sta_info *pbcmc_stainfo = r8712_get_bcmc_stainfo(padapter);

	if (pstapriv->asoc_sta_count == 1)
		return;
	spin_lock_irqsave(&pstapriv->sta_hash_lock, irqL);
	for (index = 0; index < NUM_STA; index++) {
		phead = &(pstapriv->sta_hash[index]);
		plist = phead->next;
		while ((end_of_queue_search(phead, plist)) == false) {
			psta = LIST_CONTAINOR(plist,
					      struct sta_info, hash_list);
			plist = plist->next;
			if (pbcmc_stainfo != psta)
				r8712_free_stainfo(padapter, psta);
		}
	}
	spin_unlock_irqrestore(&pstapriv->sta_hash_lock, irqL);
}

/* any station allocated can be searched by hash list */
struct sta_info *r8712_get_stainfo(struct sta_priv *pstapriv, u8 *hwaddr)
{
	unsigned long	 irqL;
	struct list_head *plist, *phead;
	struct sta_info *psta = NULL;
	u32	index;

	if (hwaddr == NULL)
		return NULL;
	index = wifi_mac_hash(hwaddr);
	spin_lock_irqsave(&pstapriv->sta_hash_lock, irqL);
	phead = &(pstapriv->sta_hash[index]);
	plist = phead->next;
	while ((end_of_queue_search(phead, plist)) == false) {
		psta = LIST_CONTAINOR(plist, struct sta_info, hash_list);
		if ((!memcmp(psta->hwaddr, hwaddr, ETH_ALEN))) {
			/* if found the matched address */
			break;
		}
		psta = NULL;
		plist = plist->next;
	}
	spin_unlock_irqrestore(&pstapriv->sta_hash_lock, irqL);
	return psta;
}

void r8712_init_bcmc_stainfo(struct _adapter *padapter)
{
	unsigned char bcast_addr[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
	struct	sta_priv *pstapriv = &padapter->stapriv;

	r8712_alloc_stainfo(pstapriv, bcast_addr);
}

struct sta_info *r8712_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 = r8712_get_stainfo(pstapriv, bc_addr);
	return psta;
}


u8 r8712_access_ctrl(struct wlan_acl_pool *pacl_list, u8 *mac_addr)
{
	return true;
}
Commit	Line	Data
2865d42c LF	1	/******************************************************************************
	2	* rtl871x_sta_mgt.c
	3	*
	4	* Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
	5	* Linux device driver for RTL8192SU
	6	*
	7	* This program is free software; you can redistribute it and/or modify it
	8	* under the terms of version 2 of the GNU General Public License as
	9	* published by the Free Software Foundation.
	10	*
	11	* This program is distributed in the hope that it will be useful, but WITHOUT
	12	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	13	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	14	* more details.
	15	*
	16	* You should have received a copy of the GNU General Public License along with
	17	* this program; if not, write to the Free Software Foundation, Inc.,
	18	* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
	19	*
	20	* Modifications for inclusion into the Linux staging tree are
	21	* Copyright(c) 2010 Larry Finger. All rights reserved.
	22	*
	23	* Contact information:
	24	* WLAN FAE <wlanfae@realtek.com>
	25	* Larry Finger <Larry.Finger@lwfinger.net>
	26	*
	27	******************************************************************************/
	28
	29	#define _RTL871X_STA_MGT_C_
	30
	31	#include "osdep_service.h"
	32	#include "drv_types.h"
	33	#include "recv_osdep.h"
	34	#include "xmit_osdep.h"
	35	#include "sta_info.h"
	36
	37	static void _init_stainfo(struct sta_info *psta)
	38	{
	39	memset((u8 *)psta, 0, sizeof(struct sta_info));
	40	spin_lock_init(&psta->lock);
534c4acd JS	41	INIT_LIST_HEAD(&psta->list);
534c4acd JS	42	INIT_LIST_HEAD(&psta->hash_list);
2865d42c LF	43	_r8712_init_sta_xmit_priv(&psta->sta_xmitpriv);
2865d42c LF	44	_r8712_init_sta_recv_priv(&psta->sta_recvpriv);
534c4acd JS	45	INIT_LIST_HEAD(&psta->asoc_list);
534c4acd JS	46	INIT_LIST_HEAD(&psta->auth_list);
2865d42c LF	47	}
	48
	49	u32 _r8712_init_sta_priv(struct sta_priv *pstapriv)
	50	{
	51	struct sta_info *psta;
	52	s32 i;
	53
91d435fe VO	54	pstapriv->pallocated_stainfo_buf = kmalloc(sizeof(struct sta_info) *
91d435fe VO	55	NUM_STA + 4, GFP_ATOMIC);
2865d42c LF	56	if (pstapriv->pallocated_stainfo_buf == NULL)
	57	return _FAIL;
	58	pstapriv->pstainfo_buf = pstapriv->pallocated_stainfo_buf + 4 -
	59	((addr_t)(pstapriv->pallocated_stainfo_buf) & 3);
	60	_init_queue(&pstapriv->free_sta_queue);
	61	spin_lock_init(&pstapriv->sta_hash_lock);
	62	pstapriv->asoc_sta_count = 0;
	63	_init_queue(&pstapriv->sleep_q);
	64	_init_queue(&pstapriv->wakeup_q);
	65	psta = (struct sta_info *)(pstapriv->pstainfo_buf);
	66	for (i = 0; i < NUM_STA; i++) {
	67	_init_stainfo(psta);
534c4acd	68	INIT_LIST_HEAD(&(pstapriv->sta_hash[i]));
e99a428a	69	list_add_tail(&psta->list, &pstapriv->free_sta_queue.queue);
2865d42c LF	70	psta++;
2865d42c LF	71	}
534c4acd JS	72	INIT_LIST_HEAD(&pstapriv->asoc_list);
534c4acd JS	73	INIT_LIST_HEAD(&pstapriv->auth_list);
2865d42c LF	74	return _SUCCESS;
	75	}
	76
	77	/* this function is used to free the memory of lock \|\| sema for all stainfos */
	78	static void mfree_all_stainfo(struct sta_priv *pstapriv)
	79	{
	80	unsigned long irqL;
	81	struct list_head plist, phead;
2865d42c LF	82
2865d42c LF	83	spin_lock_irqsave(&pstapriv->sta_hash_lock, irqL);
e99a428a	84	phead = &pstapriv->free_sta_queue.queue;
849fb0a8	85	plist = phead->next;
3002b1a6	86	while ((end_of_queue_search(phead, plist)) == false)
849fb0a8	87	plist = plist->next;
2865d42c LF	88
	89	spin_unlock_irqrestore(&pstapriv->sta_hash_lock, irqL);
	90	}
	91
	92
	93	static void mfree_sta_priv_lock(struct sta_priv *pstapriv)
	94	{
	95	mfree_all_stainfo(pstapriv); /* be done before free sta_hash_lock */
	96	}
	97
	98	u32 _r8712_free_sta_priv(struct sta_priv *pstapriv)
	99	{
	100	if (pstapriv) {
	101	mfree_sta_priv_lock(pstapriv);
	102	kfree(pstapriv->pallocated_stainfo_buf);
	103	}
	104	return _SUCCESS;
	105	}
	106
	107	struct sta_info r8712_alloc_stainfo(struct sta_priv pstapriv, u8 *hwaddr)
	108	{
2865d42c LF	109	s32 index;
	110	struct list_head *phash_list;
	111	struct sta_info *psta;
	112	struct __queue *pfree_sta_queue;
	113	struct recv_reorder_ctrl *preorder_ctrl;
	114	int i = 0;
	115	u16 wRxSeqInitialValue = 0xffff;
	116	unsigned long flags;
	117
	118	pfree_sta_queue = &pstapriv->free_sta_queue;
	119	spin_lock_irqsave(&(pfree_sta_queue->lock), flags);
df353f61	120	if (list_empty(&pfree_sta_queue->queue))
2865d42c LF	121	psta = NULL;
2865d42c LF	122	else {
849fb0a8	123	psta = LIST_CONTAINOR(pfree_sta_queue->queue.next,
2865d42c	124	struct sta_info, list);
29197b7c	125	list_del_init(&(psta->list));
2865d42c LF	126	_init_stainfo(psta);
	127	memcpy(psta->hwaddr, hwaddr, ETH_ALEN);
	128	index = wifi_mac_hash(hwaddr);
	129	if (index >= NUM_STA) {
	130	psta = NULL;
	131	goto exit;
	132	}
	133	phash_list = &(pstapriv->sta_hash[index]);
fdfbf789	134	list_add_tail(&psta->hash_list, phash_list);
77e73e8c	135	pstapriv->asoc_sta_count++;
2865d42c LF	136
	137	/* For the SMC router, the sequence number of first packet of WPS handshake
	138	* will be 0. In this case, this packet will be dropped by recv_decache function
	139	* if we use the 0x00 as the default value for tid_rxseq variable. So, we
	140	* initialize the tid_rxseq variable as the 0xffff.
	141	*/
	142	for (i = 0; i < 16; i++)
	143	memcpy(&psta->sta_recvpriv.rxcache.tid_rxseq[i],
	144	&wRxSeqInitialValue, 2);
	145	/* for A-MPDU Rx reordering buffer control */
77e73e8c	146	for (i = 0; i < 16; i++) {
2865d42c LF	147	preorder_ctrl = &psta->recvreorder_ctrl[i];
	148	preorder_ctrl->padapter = pstapriv->padapter;
	149	preorder_ctrl->indicate_seq = 0xffff;
	150	preorder_ctrl->wend_b = 0xffff;
	151	preorder_ctrl->wsize_b = 64;
	152	_init_queue(&preorder_ctrl->pending_recvframe_queue);
	153	r8712_init_recv_timer(preorder_ctrl);
	154	}
	155	}
	156	exit:
	157	spin_unlock_irqrestore(&(pfree_sta_queue->lock), flags);
	158	return psta;
	159	}
	160
	161	/* using pstapriv->sta_hash_lock to protect */
	162	void r8712_free_stainfo(struct _adapter padapter, struct sta_info psta)
	163	{
	164	int i;
	165	unsigned long irqL0;
	166	struct __queue *pfree_sta_queue;
	167	struct recv_reorder_ctrl *preorder_ctrl;
	168	struct sta_xmit_priv *pstaxmitpriv;
	169	struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
	170	struct sta_priv *pstapriv = &padapter->stapriv;
	171
	172	if (psta == NULL)
	173	return;
	174	pfree_sta_queue = &pstapriv->free_sta_queue;
	175	pstaxmitpriv = &psta->sta_xmitpriv;
	176	spin_lock_irqsave(&(pxmitpriv->vo_pending.lock), irqL0);
	177	r8712_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->vo_q.sta_pending);
29197b7c	178	list_del_init(&(pstaxmitpriv->vo_q.tx_pending));
2865d42c LF	179	spin_unlock_irqrestore(&(pxmitpriv->vo_pending.lock), irqL0);
	180	spin_lock_irqsave(&(pxmitpriv->vi_pending.lock), irqL0);
	181	r8712_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->vi_q.sta_pending);
29197b7c	182	list_del_init(&(pstaxmitpriv->vi_q.tx_pending));
2865d42c LF	183	spin_unlock_irqrestore(&(pxmitpriv->vi_pending.lock), irqL0);
	184	spin_lock_irqsave(&(pxmitpriv->bk_pending.lock), irqL0);
	185	r8712_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->bk_q.sta_pending);
29197b7c	186	list_del_init(&(pstaxmitpriv->bk_q.tx_pending));
2865d42c LF	187	spin_unlock_irqrestore(&(pxmitpriv->bk_pending.lock), irqL0);
	188	spin_lock_irqsave(&(pxmitpriv->be_pending.lock), irqL0);
	189	r8712_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->be_q.sta_pending);
29197b7c	190	list_del_init(&(pstaxmitpriv->be_q.tx_pending));
2865d42c	191	spin_unlock_irqrestore(&(pxmitpriv->be_pending.lock), irqL0);
29197b7c	192	list_del_init(&psta->hash_list);
2865d42c LF	193	pstapriv->asoc_sta_count--;
	194	/* re-init sta_info; 20061114 */
	195	_r8712_init_sta_xmit_priv(&psta->sta_xmitpriv);
	196	_r8712_init_sta_recv_priv(&psta->sta_recvpriv);
	197	/* for A-MPDU Rx reordering buffer control,
	198	* cancel reordering_ctrl_timer */
	199	for (i = 0; i < 16; i++) {
	200	preorder_ctrl = &psta->recvreorder_ctrl[i];
6501c8e7	201	del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
2865d42c LF	202	}
	203	spin_lock(&(pfree_sta_queue->lock));
	204	/* insert into free_sta_queue; 20061114 */
e99a428a	205	list_add_tail(&psta->list, &pfree_sta_queue->queue);
2865d42c LF	206	spin_unlock(&(pfree_sta_queue->lock));
	207	}
	208
	209	/* free all stainfo which in sta_hash[all] */
	210	void r8712_free_all_stainfo(struct _adapter *padapter)
	211	{
	212	unsigned long irqL;
	213	struct list_head plist, phead;
	214	s32 index;
	215	struct sta_info *psta = NULL;
	216	struct sta_priv *pstapriv = &padapter->stapriv;
	217	struct sta_info *pbcmc_stainfo = r8712_get_bcmc_stainfo(padapter);
	218
	219	if (pstapriv->asoc_sta_count == 1)
	220	return;
	221	spin_lock_irqsave(&pstapriv->sta_hash_lock, irqL);
	222	for (index = 0; index < NUM_STA; index++) {
	223	phead = &(pstapriv->sta_hash[index]);
849fb0a8	224	plist = phead->next;
2865d42c LF	225	while ((end_of_queue_search(phead, plist)) == false) {
	226	psta = LIST_CONTAINOR(plist,
	227	struct sta_info, hash_list);
849fb0a8	228	plist = plist->next;
2865d42c	229	if (pbcmc_stainfo != psta)
0636b460	230	r8712_free_stainfo(padapter, psta);
2865d42c LF	231	}
	232	}
	233	spin_unlock_irqrestore(&pstapriv->sta_hash_lock, irqL);
	234	}
	235
	236	/* any station allocated can be searched by hash list */
	237	struct sta_info r8712_get_stainfo(struct sta_priv pstapriv, u8 *hwaddr)
	238	{
	239	unsigned long irqL;
	240	struct list_head plist, phead;
	241	struct sta_info *psta = NULL;
	242	u32 index;
	243
	244	if (hwaddr == NULL)
	245	return NULL;
	246	index = wifi_mac_hash(hwaddr);
	247	spin_lock_irqsave(&pstapriv->sta_hash_lock, irqL);
	248	phead = &(pstapriv->sta_hash[index]);
849fb0a8	249	plist = phead->next;
2865d42c LF	250	while ((end_of_queue_search(phead, plist)) == false) {
	251	psta = LIST_CONTAINOR(plist, struct sta_info, hash_list);
	252	if ((!memcmp(psta->hwaddr, hwaddr, ETH_ALEN))) {
	253	/* if found the matched address */
	254	break;
	255	}
	256	psta = NULL;
849fb0a8	257	plist = plist->next;
2865d42c LF	258	}
	259	spin_unlock_irqrestore(&pstapriv->sta_hash_lock, irqL);
	260	return psta;
	261	}
	262
	263	void r8712_init_bcmc_stainfo(struct _adapter *padapter)
	264	{
2865d42c LF	265	unsigned char bcast_addr[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
	266	struct sta_priv *pstapriv = &padapter->stapriv;
	267
e29d3ebc	268	r8712_alloc_stainfo(pstapriv, bcast_addr);
2865d42c LF	269	}
	270
	271	struct sta_info r8712_get_bcmc_stainfo(struct _adapter padapter)
	272	{
	273	struct sta_info *psta;
	274	struct sta_priv *pstapriv = &padapter->stapriv;
	275	u8 bc_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
	276
	277	psta = r8712_get_stainfo(pstapriv, bc_addr);
	278	return psta;
	279	}
	280
	281
	282	u8 r8712_access_ctrl(struct wlan_acl_pool pacl_list, u8 mac_addr)
	283	{
	284	return true;
	285	}