https://github.com/torvalds/linux
Tip revision: f4d51dffc6c01a9e94650d95ce0104964f8ae822 authored by Linus Torvalds on 07 September 2020, 00:11:40 UTC
Linux 5.9-rc4
Linux 5.9-rc4
Tip revision: f4d51df
xmit_linux.c
// SPDX-License-Identifier: GPL-2.0
/******************************************************************************
* xmit_linux.c
*
* Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
* Linux device driver for RTL8192SU
*
* 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 *adapter = container_of(work, struct _adapter,
wk_filter_rx_ff0);
u8 oldvalue = 0x00, newvalue = 0x00;
unsigned long irqL;
oldvalue = r8712_read8(adapter, 0x117);
newvalue = oldvalue & 0xfe;
r8712_write8(adapter, 0x117, newvalue);
spin_lock_irqsave(&adapter->lock_rx_ff0_filter, irqL);
adapter->blnEnableRxFF0Filter = 1;
spin_unlock_irqrestore(&adapter->lock_rx_ff0_filter, irqL);
do {
msleep(100);
} while (adapter->blnEnableRxFF0Filter == 1);
r8712_write8(adapter, 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 -ENOMEM;
}
kmemleak_not_leak(pxmitbuf->pxmit_urb[i]);
}
return 0;
}
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 *netdev)
{
struct xmit_frame *xmitframe = NULL;
struct _adapter *adapter = netdev_priv(netdev);
struct xmit_priv *xmitpriv = &(adapter->xmitpriv);
if (!r8712_if_up(adapter))
goto _xmit_entry_drop;
xmitframe = r8712_alloc_xmitframe(xmitpriv);
if (!xmitframe)
goto _xmit_entry_drop;
if (r8712_update_attrib(adapter, pkt, &xmitframe->attrib))
goto _xmit_entry_drop;
adapter->ledpriv.LedControlHandler(adapter, LED_CTL_TX);
xmitframe->pkt = pkt;
if (r8712_pre_xmit(adapter, xmitframe)) {
/*dump xmitframe directly or drop xframe*/
dev_kfree_skb_any(pkt);
xmitframe->pkt = NULL;
}
xmitpriv->tx_pkts++;
xmitpriv->tx_bytes += xmitframe->attrib.last_txcmdsz;
return 0;
_xmit_entry_drop:
if (xmitframe)
r8712_free_xmitframe(xmitpriv, xmitframe);
xmitpriv->tx_drop++;
dev_kfree_skb_any(pkt);
return 0;
}