使用struct ifreq和ioctl函数获取网口的MAC地址和IP地址信息

#include<vxWorks.h>
#include<inetLib.h>
#include<sys/socket.h>
#include<sockLib.h>
#include"wrn/coreip/ipnet/ipioctl.h"

void GetMacAddress(char *interface) 
{
    struct ifreq ifr;


    strncpy(ifr.ifr_name, interface, strlen(interface) + 1);  


    int fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);

    if (ioctl(fd, SIOCGIFHWADDR, &ifr) < 0) 
    {
        printf("ioctl fail\n");
    }
    for(int i=0;i<6;i++)
      printf("%02x:",ifr.ifr_addr.sa_data[i]);
    printf("\n");
    close(fd);
}

void GetIpAddress(char *network_interface) 
{

    struct ifreq ifr;
    int ipaddr = 0;
    int netaddr = 0;

    strncpy(ifr.ifr_name, interface, strlen(interface) + 1);  

    int fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);

    if (ioctl(fd, SIOCGIFADDR, &ifr) == 0) {
        ipaddr = ( (struct sockaddr_in *) &ifr.ifr_addr )->sin_addr.s_addr;
    }

    if (ioctl(fd, SIOCGIFNETMASK, &ifr) == 0) {
        etaddr = ( (struct sockaddr_in *) &ifr.ifr_addr )->sin_addr.s_addr;
    }

    close(fd);

}