diff options
Diffstat (limited to 'drivers/staging/rtl8188eu/hal/rtl8188eu_recv.c')
| -rw-r--r-- | drivers/staging/rtl8188eu/hal/rtl8188eu_recv.c | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/drivers/staging/rtl8188eu/hal/rtl8188eu_recv.c b/drivers/staging/rtl8188eu/hal/rtl8188eu_recv.c new file mode 100644 index 000000000000..0f47b8918593 --- /dev/null +++ b/drivers/staging/rtl8188eu/hal/rtl8188eu_recv.c @@ -0,0 +1,138 @@ +/****************************************************************************** + * + * 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 <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 <rtl8188e_hal.h> + +void rtl8188eu_init_recvbuf(struct adapter *padapter, struct recv_buf *precvbuf) +{ + precvbuf->transfer_len = 0; + + precvbuf->len = 0; + + precvbuf->ref_cnt = 0; + + if (precvbuf->pbuf) { + precvbuf->pdata = precvbuf->pbuf; + precvbuf->phead = precvbuf->pbuf; + precvbuf->ptail = precvbuf->pbuf; + precvbuf->pend = precvbuf->pdata + MAX_RECVBUF_SZ; + } +} + +int rtl8188eu_init_recv_priv(struct adapter *padapter) +{ + struct recv_priv *precvpriv = &padapter->recvpriv; + int i, res = _SUCCESS; + struct recv_buf *precvbuf; + + tasklet_init(&precvpriv->recv_tasklet, + (void(*)(unsigned long))rtl8188eu_recv_tasklet, + (unsigned long)padapter); + + /* init recv_buf */ + _rtw_init_queue(&precvpriv->free_recv_buf_queue); + + 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_t)(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); + { + int i; + size_t tmpaddr = 0; + size_t 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++) { + pskb = __netdev_alloc_skb(padapter->pnetdev, MAX_RECVBUF_SZ + RECVBUFF_ALIGN_SZ, GFP_KERNEL); + if (pskb) { + pskb->dev = padapter->pnetdev; + tmpaddr = (size_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; + } + } +exit: + return res; +} + +void rtl8188eu_free_recv_priv(struct 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++; + } + + kfree(precvpriv->pallocated_recv_buf); + + 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); + + + 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); +} |