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Summary:roboitcs LE:USB2LAN mac address storage in /persist/lan_mac.bin[2/2]

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[IssueID]:redmineID88260
[Module]: kernel

Change-Id: Ie8fe261a465e5b0afac667a760875a5135c13b32
This commit is contained in:
zhangrj0920
2019-01-02 11:38:15 +08:00
committed by 李政春
parent 17f44997ce
commit 39a1bb176c
1 changed files with 54 additions and 0 deletions
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54
drivers/net/usb/ax88179_178a.c
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@@ -39,6 +39,9 @@
#include <linux/usb.h>
#include <linux/crc32.h>
#include <linux/if_vlan.h>
#include <linux/fs.h>
#include <linux/uaccess.h>
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25)
#include <linux/usb/usbnet.h>
@@ -1433,12 +1436,63 @@ static int access_eeprom_mac(struct usbnet *dev, u8 *buf, u8 offset, int wflag)
return 0;
}
const char* persist_mac_file = "/persist/lan_mac.bin";
static char buf[] ="xxxxxxxxxxxx";
static char buf1[24];
int hex2num(char c)
{
if (c>='0' && c<='9') return c - '0';
if (c>='a' && c<='z') return c - 'a' + 10;
if (c>='A' && c<='Z') return c - 'A' + 10;
return 0;
}
int str2mac(char * szMac, u8 * pMac)
{
char * pTemp = szMac;
int i;
for (i = 0;i < 6;++i)
{
pMac[i] = hex2num(*pTemp++) * 16;
pMac[i] += hex2num(*pTemp++);
}
return 0;
}
int read_mac_addr(u8 *addr)
{
struct file *fp;
mm_segment_t fs;
loff_t pos;
//printk("mac_addr:");
fp =filp_open(persist_mac_file,O_RDWR ,0644);
if (IS_ERR(fp)){
printk("open file error \n");
return -1;
}
fs =get_fs();
set_fs(KERNEL_DS);
pos =0;
vfs_read(fp,buf1, sizeof(buf), &pos);
str2mac(buf1,addr);
//printk("mac_addr:%s \n",addr);
filp_close(fp,NULL);
set_fs(fs);
return 0;
}
static int ax88179_check_ether_addr(struct usbnet *dev)
{
unsigned char *tmp = (unsigned char*)dev->net->dev_addr;
u8 default_mac[6] = {0, 0x0e, 0xc6, 0x81, 0x79, 0x01};
u8 default_mac_178a[6] = {0, 0x0e, 0xc6, 0x81, 0x78, 0x01};
read_mac_addr(dev->net->dev_addr);
if (((*((u8*)tmp) == 0) && (*((u8*)tmp + 1) == 0) && (*((u8*)tmp + 2) == 0)) ||
!is_valid_ether_addr((u8*)tmp) ||
!memcmp(dev->net->dev_addr, default_mac, ETH_ALEN) ||