testvnet3.c

来自「嵌入式系统的网络仿真」· C语言 代码 · 共 59 行

//----------------------------------------------------------------------------
//test set/get guestif  mac addr
//----------------------------------------------------------------------------
#include <net/if.h>
#include <sys/ioctl.h>
//#include "if_vnet.h"

//from linux/sockios.h
#define SIOCGIFADDR	0x8915		/* get PA address		*/
#define SIOCSIFADDR	0x8916		/* set PA address		*/


void main(void){

int tapif_fd;
struct ifreq ifr;
char buf[1024];
unsigned char paddr[6];

printf("test vnet ioctl\n");

tapif_fd = open("/dev/net/vnet", 2);
if(tapif_fd<0){ 
	perror("open");exit(-1);
};
printf("open vnet ok!\n");
  
if (ioctl(tapif_fd, SIOCGIFADDR, (void *) paddr) < 0) {
    printf("get mac addr error\n");
    exit(-1);
}
printf("ioctl vnet get mac addr ok, addr is %x:%x:%x:%x:%x:%x \n", paddr[0],paddr[1],paddr[2],paddr[3],paddr[4],paddr[5]);

paddr[0]=0;
paddr[1]=1;
paddr[2]=2;
paddr[3]=3;
paddr[4]=4;
paddr[5]=5;

if (ioctl(tapif_fd, SIOCSIFADDR, (void *) paddr) < 0) {
    printf("set mac addr error\n");
    exit(-1);
}

printf("ioctl vnet set mac addr ok\n");


if (ioctl(tapif_fd, SIOCGIFADDR, (void *) paddr) < 0) {
    printf("get mac addr error\n");
    exit(-1);
}
printf("ioctl vnet get mac addr ok, addr is %x:%x:%x:%x:%x:%x \n", paddr[0],paddr[1],paddr[2],paddr[3],paddr[4],paddr[5]);

/*
while(1){ sleep(30);};
*/
}