rtl8188eu/hal/rtl8188eu_recv.c

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/******************************************************************************
*
* 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.
*
* 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
*
*
******************************************************************************/
#define _RTL8188EU_RECV_C_
#include <drv_conf.h>
#include <osdep_service.h>
#include <drv_types.h>
#include <recv_osdep.h>
#include <mlme_osdep.h>
#include <ip.h>
#include <if_ether.h>
#include <ethernet.h>
#include <usb_ops.h>
#include <wifi.h>
#include <circ_buf.h>
#include <rtl8188e_hal.h>
void rtl8188eu_init_recvbuf(_adapter *padapter, struct recv_buf *precvbuf)
{
precvbuf->transfer_len = 0;
precvbuf->len = 0;
precvbuf->ref_cnt = 0;
if (precvbuf->pbuf)
{
precvbuf->pdata = precvbuf->phead = precvbuf->ptail = precvbuf->pbuf;
precvbuf->pend = precvbuf->pdata + MAX_RECVBUF_SZ;
}
}
int rtl8188eu_init_recv_priv(_adapter *padapter)
{
struct recv_priv *precvpriv = &padapter->recvpriv;
int i, res = _SUCCESS;
struct recv_buf *precvbuf;
#ifdef CONFIG_RECV_THREAD_MODE
_rtw_init_sema(&precvpriv->recv_sema, 0);/* will be removed */
_rtw_init_sema(&precvpriv->terminate_recvthread_sema, 0);/* will be removed */
#endif
tasklet_init(&precvpriv->recv_tasklet,
(void(*)(unsigned long))rtl8188eu_recv_tasklet,
(unsigned long)padapter);
#ifdef CONFIG_USB_INTERRUPT_IN_PIPE
precvpriv->int_in_urb = usb_alloc_urb(0, GFP_KERNEL);
if (precvpriv->int_in_urb == NULL){
res= _FAIL;
DBG_88E("alloc_urb for interrupt in endpoint fail !!!!\n");
goto exit;
}
precvpriv->int_in_buf = rtw_zmalloc(INTERRUPT_MSG_FORMAT_LEN);
if (precvpriv->int_in_buf == NULL){
res= _FAIL;
DBG_88E("alloc_mem for interrupt in endpoint fail !!!!\n");
goto exit;
}
#endif
/* init recv_buf */
_rtw_init_queue(&precvpriv->free_recv_buf_queue);
#ifdef CONFIG_USE_USB_BUFFER_ALLOC_RX
_rtw_init_queue(&precvpriv->recv_buf_pending_queue);
#endif /* CONFIG_USE_USB_BUFFER_ALLOC_RX */
precvpriv->pallocated_recv_buf = rtw_zmalloc(NR_RECVBUFF *sizeof(struct recv_buf) + 4);
if (precvpriv->pallocated_recv_buf==NULL){
res= _FAIL;
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("alloc recv_buf fail!\n"));
goto exit;
}
_rtw_memset(precvpriv->pallocated_recv_buf, 0, NR_RECVBUFF *sizeof(struct recv_buf) + 4);
precvpriv->precv_buf = (u8 *)N_BYTE_ALIGMENT((SIZE_PTR)(precvpriv->pallocated_recv_buf), 4);
precvbuf = (struct recv_buf*)precvpriv->precv_buf;
for (i=0; i < NR_RECVBUFF ; i++)
{
_rtw_init_listhead(&precvbuf->list);
_rtw_spinlock_init(&precvbuf->recvbuf_lock);
precvbuf->alloc_sz = MAX_RECVBUF_SZ;
res = rtw_os_recvbuf_resource_alloc(padapter, precvbuf);
if (res==_FAIL)
break;
precvbuf->ref_cnt = 0;
precvbuf->adapter =padapter;
precvbuf++;
}
precvpriv->free_recv_buf_queue_cnt = NR_RECVBUFF;
skb_queue_head_init(&precvpriv->rx_skb_queue);
#ifdef CONFIG_PREALLOC_RECV_SKB
{
int i;
SIZE_PTR tmpaddr=0;
SIZE_PTR alignment=0;
struct sk_buff *pskb=NULL;
skb_queue_head_init(&precvpriv->free_recv_skb_queue);
for (i=0; i<NR_PREALLOC_RECV_SKB; i++)
{
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18)) /* www.mail-archive.com/netdev@vger.kernel.org/msg17214.html */
pskb = __dev_alloc_skb(MAX_RECVBUF_SZ + RECVBUFF_ALIGN_SZ, GFP_KERNEL);
#else
pskb = __netdev_alloc_skb(padapter->pnetdev, MAX_RECVBUF_SZ + RECVBUFF_ALIGN_SZ, GFP_KERNEL);
#endif
if (pskb)
{
pskb->dev = padapter->pnetdev;
tmpaddr = (SIZE_PTR)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;
}
}
#endif
exit:
return res;
}
void rtl8188eu_free_recv_priv (_adapter *padapter)
{
int i;
struct recv_buf *precvbuf;
struct recv_priv *precvpriv = &padapter->recvpriv;
precvbuf = (struct recv_buf *)precvpriv->precv_buf;
for (i=0; i < NR_RECVBUFF ; i++)
{
rtw_os_recvbuf_resource_free(padapter, precvbuf);
precvbuf++;
}
if (precvpriv->pallocated_recv_buf)
rtw_mfree(precvpriv->pallocated_recv_buf, NR_RECVBUFF *sizeof(struct recv_buf) + 4);
#ifdef CONFIG_USB_INTERRUPT_IN_PIPE
if (precvpriv->int_in_urb)
{
usb_free_urb(precvpriv->int_in_urb);
}
if (precvpriv->int_in_buf)
rtw_mfree(precvpriv->int_in_buf, INTERRUPT_MSG_FORMAT_LEN);
#endif/* CONFIG_USB_INTERRUPT_IN_PIPE */
if (skb_queue_len(&precvpriv->rx_skb_queue))
DBG_88E(KERN_WARNING "rx_skb_queue not empty\n");
skb_queue_purge(&precvpriv->rx_skb_queue);
#ifdef CONFIG_PREALLOC_RECV_SKB
if (skb_queue_len(&precvpriv->free_recv_skb_queue))
DBG_88E(KERN_WARNING "free_recv_skb_queue not empty, %d\n", skb_queue_len(&precvpriv->free_recv_skb_queue));
skb_queue_purge(&precvpriv->free_recv_skb_queue);
#endif
}