今天查看linux的网络知识,点击打开链接
想到vxworks6.6中ifaddr的实现,记录下:
wr_vxworks_platforms_migration_guide_3.7.pdf中,14.7.2中,如下:
ifAddrGet( ) SIOCGIFADDR ioctl command
示例:
static unsigned int GetIPAddrV4th(int no)
{
int inet_sock;
struct ifreq ifr;
struct sockaddr_in *ptemp = NULL;
if (no < 0 || no > 2)
return 0;
inet_sock = socket(AF_INET, SOCK_DGRAM, 0);
if (inet_sock != ERROR)
{
sprintf (ifr.ifr_name, "%s%d", "ie", no);
if (ioctl(inet_sock, SIOCGIFADDR, &ifr) ==OK)
{
ptemp = (struct sockaddr_in*)&(ifr.ifr_addr);
}
close(inet_sock);
}
if (ptemp)
return ptemp->sin_addr.s_addr;
else
return 0;
}
static unsigned int GetIPMaskV4th(int no)
{
int inet_sock;
struct ifreq ifr;
struct sockaddr_in *ptemp = NULL;
if (no < 0 || no > 2)
return 0;
inet_sock = socket(AF_INET, SOCK_DGRAM, 0);
if (inet_sock != ERROR)
{
sprintf (ifr.ifr_name, "%s%d", "ie", no);
if (ioctl(inet_sock, SIOCGIFNETMASK, &ifr) ==OK)
{
ptemp = (struct sockaddr_in*)&(ifr.ifr_addr);
}
close(inet_sock);
}
if (ptemp)
return ptemp->sin_addr.s_addr;
else
return 0;
}