/******************************************************************************
* rtl8712_recv.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 _RTL8712_RECV_C_
#include <linux/if_ether.h>
#include <linux/ip.h>
#include "osdep_service.h"
#include "drv_types.h"
#include "recv_osdep.h"
#include "mlme_osdep.h"
#include "ethernet.h"
#include "usb_ops.h"
#include "wifi.h"
/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
static u8 bridge_tunnel_header[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8};
/* Ethernet-II snap header (RFC1042 for most EtherTypes) */
static u8 rfc1042_header[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};
static void recv_tasklet(void *priv);
int r8712_init_recv_priv(struct recv_priv *precvpriv, struct _adapter *padapter)
{
int i;
struct recv_buf *precvbuf;
int res = _SUCCESS;
addr_t tmpaddr = 0;
int alignment = 0;
struct sk_buff *pskb = NULL;
/*init recv_buf*/
_init_queue(&precvpriv->free_recv_buf_queue);
precvpriv->pallocated_recv_buf =
kzalloc(NR_RECVBUFF * sizeof(struct recv_buf) + 4, GFP_ATOMIC);
if (!precvpriv->pallocated_recv_buf)
return _FAIL;
precvpriv->precv_buf = precvpriv->pallocated_recv_buf + 4 -
((addr_t) (precvpriv->pallocated_recv_buf) & 3);
precvbuf = (struct recv_buf *)precvpriv->precv_buf;
for (i = 0; i < NR_RECVBUFF; i++) {
INIT_LIST_HEAD(&precvbuf->list);
spin_lock_init(&precvbuf->recvbuf_lock);
res = r8712_os_recvbuf_resource_alloc(padapter, precvbuf);
if (res == _FAIL)
break;
precvbuf->ref_cnt = 0;
precvbuf->adapter = padapter;
list_add_tail(&precvbuf->list,
&(precvpriv->free_recv_buf_queue.queue));
precvbuf++;
}
precvpriv->free_recv_buf_queue_cnt = NR_RECVBUFF;
tasklet_init(&precvpriv->recv_tasklet,
(void(*)(unsigned long))recv_tasklet,
(unsigned long)padapter);
skb_queue_head_init(&precvpriv->rx_skb_queue);
skb_queue_head_init(&precvpriv->free_recv_skb_queue);
for (i = 0; i < NR_PREALLOC_RECV_SKB; i++) {
pskb = netdev_alloc_skb(padapter->pnetdev, MAX_RECVBUF_SZ +
RECVBUFF_ALIGN_SZ);
if (pskb) {
tmpaddr = (addr_t)pskb->data;
alignment = tmpaddr & (RECVBUFF_ALIGN_SZ - 1);
skb_reserve(pskb, (RECVBUFF_ALIGN_SZ - alignment));
skb_queue_tail(&precvpriv->free_recv_skb_queue, pskb);
}
pskb = NULL;
}
return res;
}
void r8712_free_recv_priv(struct recv_priv *precvpriv)
{
int i;
struct recv_buf *precvbuf;
struct _adapter *padapter = precvpriv->adap