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/******************************************************************************
* xmit_linux.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 _XMIT_OSDEP_C_
#include "osdep_service.h"
#include "drv_types.h"
#include "if_ether.h"
#include "ip.h"
#include "rtl871x_byteorder.h"
#include "wifi.h"
#include "mlme_osdep.h"
#include "xmit_osdep.h"
#include "osdep_intf.h"
static uint remainder_len(struct pkt_file *pfile)
{
/* Kovich: Need to extend the buf_len to 64 bit ?(unsigned long long) */
return (uint)(pfile->buf_len - ((addr_t)(pfile->cur_addr) -
(addr_t)(pfile->buf_start)));
}
void _r8712_open_pktfile(_pkt *pktptr, struct pkt_file *pfile)
{
pfile->pkt = pktptr;
pfile->cur_addr = pfile->buf_start = pktptr->data;
pfile->pkt_len = pfile->buf_len = pktptr->len;
pfile->cur_buffer = pfile->buf_start ;
}
uint _r8712_pktfile_read(struct pkt_file *pfile, u8 *rmem, uint rlen)
{
uint len;
len = remainder_len(pfile);
len = (rlen > len) ? len : rlen;
if (rmem)
skb_copy_bits(pfile->pkt, pfile->buf_len - pfile->pkt_len,
rmem, len);
pfile->cur_addr += len;
pfile->pkt_len -= len;
return len;
}
sint r8712_endofpktfile(struct pkt_file *pfile)
{
if (pfile->pkt_len == 0)
return true;
else
return false;
}
void r8712_set_qos(struct pkt_file *ppktfile, struct pkt_attrib *pattrib)
{
int i;
struct ethhdr etherhdr;
struct iphdr ip_hdr;
u16 UserPriority = 0;
_r8712_open_pktfile(ppktfile->pkt, ppktfile);
_r8712_pktfile_read(ppktfile, (unsigned char *)ðerhdr, ETH_HLEN);
/* get UserPriority from IP hdr*/
if (pattrib->ether_type == 0x0800) {
i = _r8712_pktfile_read(ppktfile, (u8 *)&ip_hdr,
sizeof(ip_hdr));
/*UserPriority = (ntohs(ip_hdr.tos) >> 5) & 0x3 ;*/
UserPriority = ip_hdr.tos >> 5;
} else {
/* "When priority processing of data frames is supported,
* a STA's SME should send EAPOL-Key frames at the highest
* priority." */
if (pattrib->ether_type == 0x888e)
UserPriority = 7;
}
pattrib->priority = UserPriority;
pattrib->hdrlen = WLAN_HDR_A3_QOS_LEN;
pattrib->subtype = WIFI_QOS_DATA_TYPE;
}
int r8712_xmit_resource_alloc(struct _adapter *padapter,
struct xmit_buf *pxmitbuf)
{
int i;
for (i = 0; i < 8; i++) {
pxmitbuf->pxmit_urb[i] = _usb_alloc_urb(0, GFP_KERNEL);
if (pxmitbuf->pxmit_urb[i] == NULL) {
printk(KERN_ERR "r8712u: pxmitbuf->pxmit_urb[i]"
" == NULL");
return _FAIL;
}
}
return _SUCCESS;
}
void r8712_xmit_resource_free(struct _adapter *padapter,
struct xmit_buf *pxmitbuf)
{
int i;
for (i = 0; i < 8; i++) {
if (pxmitbuf->pxmit_urb[i]) {
usb_kill_urb(pxmitbuf->pxmit_urb[i]);
usb_free_urb(pxmitbuf->pxmit_urb[i]);
}
}
}
void r8712_xmit_complete(struct _adapter *padapter, struct xmit_frame *pxframe)
{
if (pxframe->pkt)
dev_kfree_skb_any(pxframe->pkt);
pxframe->pkt = NULL;
}
int r8712_xmit_entry(_pkt *pkt, struct net_device *pnetdev)
{
struct xmit_frame *pxmitframe = NULL;
struct _adapter *padapter = (struct _adapter *)_netdev_priv(pnetdev);
struct xmit_priv *pxmitpriv = &(padapter->xmitpriv);
int ret = 0;
if (r8712_if_up(padapter) == false) {
ret = 0;
goto _xmit_entry_drop;
}
pxmitframe = r8712_alloc_xmitframe(pxmitpriv);
if (pxmitframe == NULL) {
ret = 0;
goto _xmit_entry_drop;
}
if ((!r8712_update_attrib(padapter, pkt, &pxmitframe->attrib))) {
ret = 0;
goto _xmit_entry_drop;
}
padapter->ledpriv.LedControlHandler(padapter, LED_CTL_TX);
pxmitframe->pkt = pkt;
if (r8712_pre_xmit(padapter, pxmitframe) == true) {
/*dump xmitframe directly or drop xframe*/
dev_kfree_skb_any(pkt);
pxmitframe->pkt = NULL;
}
pxmitpriv->tx_pkts++;
pxmitpriv->tx_bytes += pxmitframe->attrib.last_txcmdsz;
return ret;
_xmit_entry_drop:
if (pxmitframe)
r8712_free_xmitframe(pxmitpriv, pxmitframe);
pxmitpriv->tx_drop++;
dev_kfree_skb_any(pkt);
return ret;
}
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