/******************************************************************************
|
* 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 <linux/usb.h>
|
#include <linux/ip.h>
|
#include <linux/if_ether.h>
|
#include <linux/kmemleak.h>
|
|
#include "osdep_service.h"
|
#include "drv_types.h"
|
|
#include "wifi.h"
|
#include "mlme_osdep.h"
|
#include "xmit_osdep.h"
|
#include "osdep_intf.h"
|
|
static uint remainder_len(struct pkt_file *pfile)
|
{
|
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)
|
{
|
return (pfile->pkt_len == 0);
|
}
|
|
|
void r8712_set_qos(struct pkt_file *ppktfile, struct pkt_attrib *pattrib)
|
{
|
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) {
|
_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;
|
}
|
|
void r8712_SetFilter(struct work_struct *work)
|
{
|
struct _adapter *padapter = container_of(work, struct _adapter,
|
wkFilterRxFF0);
|
u8 oldvalue = 0x00, newvalue = 0x00;
|
unsigned long irqL;
|
|
oldvalue = r8712_read8(padapter, 0x117);
|
newvalue = oldvalue & 0xfe;
|
r8712_write8(padapter, 0x117, newvalue);
|
|
spin_lock_irqsave(&padapter->lockRxFF0Filter, irqL);
|
padapter->blnEnableRxFF0Filter = 1;
|
spin_unlock_irqrestore(&padapter->lockRxFF0Filter, irqL);
|
do {
|
msleep(100);
|
} while (padapter->blnEnableRxFF0Filter == 1);
|
r8712_write8(padapter, 0x117, oldvalue);
|
}
|
|
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]) {
|
netdev_err(padapter->pnetdev, "pxmitbuf->pxmit_urb[i] == NULL\n");
|
return _FAIL;
|
}
|
kmemleak_not_leak(pxmitbuf->pxmit_urb[i]);
|
}
|
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 = netdev_priv(pnetdev);
|
struct xmit_priv *pxmitpriv = &(padapter->xmitpriv);
|
|
if (!r8712_if_up(padapter))
|
goto _xmit_entry_drop;
|
|
pxmitframe = r8712_alloc_xmitframe(pxmitpriv);
|
if (!pxmitframe)
|
goto _xmit_entry_drop;
|
|
if ((!r8712_update_attrib(padapter, pkt, &pxmitframe->attrib)))
|
goto _xmit_entry_drop;
|
|
padapter->ledpriv.LedControlHandler(padapter, LED_CTL_TX);
|
pxmitframe->pkt = pkt;
|
if (r8712_pre_xmit(padapter, pxmitframe)) {
|
/*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 0;
|
_xmit_entry_drop:
|
if (pxmitframe)
|
r8712_free_xmitframe(pxmitpriv, pxmitframe);
|
pxmitpriv->tx_drop++;
|
dev_kfree_skb_any(pkt);
|
return 0;
|
}
|
