long lkl_ioctl(int fd, unsigned long req, ...) {
va_list vl;
long arg;
va_start(vl, req);
arg = va_arg(vl, long);
va_end(vl);
return lkl_set_errno(lkl_sys_ioctl(fd, req, arg));
}
int lkl_if_up(int ifindex)
{
struct lkl_ifreq ifr;
int err, sock = lkl_sys_socket(LKL_AF_INET, LKL_SOCK_DGRAM, 0);
if (sock < 0)
return sock;
err = ifindex_to_name(sock, &ifr, ifindex);
if (err < 0)
return err;
err = lkl_sys_ioctl(sock, LKL_SIOCGIFFLAGS, (long)&ifr);
if (!err) {
ifr.lkl_ifr_flags |= LKL_IFF_UP;
err = lkl_sys_ioctl(sock, LKL_SIOCSIFFLAGS, (long)&ifr);
}
lkl_sys_close(sock);
return err;
}
int lkl_if_set_ipv4(int ifindex, unsigned int addr, unsigned int netmask_len)
{
struct lkl_ifreq ifr;
struct lkl_sockaddr_in *sin;
int err, sock;
sock = lkl_sys_socket(LKL_AF_INET, LKL_SOCK_DGRAM, 0);
if (sock < 0)
return sock;
err = ifindex_to_name(sock, &ifr, ifindex);
if (err < 0)
return err;
if (netmask_len >= 31)
return -LKL_EINVAL;
sin = (struct lkl_sockaddr_in *)&ifr.lkl_ifr_addr;
set_sockaddr(sin, addr, 0);
err = lkl_sys_ioctl(sock, LKL_SIOCSIFADDR, (long)&ifr);
if (!err) {
int netmask = (((1<<netmask_len)-1))<<(32-netmask_len);
sin = (struct lkl_sockaddr_in *)&ifr.lkl_ifr_netmask;
set_sockaddr(sin, htonl(netmask), 0);
err = lkl_sys_ioctl(sock, LKL_SIOCSIFNETMASK, (long)&ifr);
if (!err) {
set_sockaddr(sin, htonl(ntohl(addr)|~netmask), 0);
err = lkl_sys_ioctl(sock, LKL_SIOCSIFBRDADDR, (long)&ifr);
}
}
lkl_sys_close(sock);
return err;
}
int lkl_netdev_get_ifindex(int id)
{
struct lkl_ifreq ifr;
int sock, ret;
sock = lkl_sys_socket(LKL_AF_INET, LKL_SOCK_DGRAM, 0);
if (sock < 0)
return sock;
snprintf(ifr.lkl_ifr_name, sizeof(ifr.lkl_ifr_name), "eth%d", id);
ret = lkl_sys_ioctl(sock, LKL_SIOCGIFINDEX, (long)&ifr);
lkl_sys_close(sock);
return ret < 0 ? ret : ifr.lkl_ifr_ifindex;
}
int lkl_set_ipv4_gateway(unsigned int addr)
{
struct lkl_rtentry re;
int err, sock = lkl_sys_socket(LKL_AF_INET, LKL_SOCK_DGRAM, 0);
if (sock < 0)
return sock;
memset(&re, 0, sizeof(re));
set_sockaddr((struct lkl_sockaddr_in *) &re.rt_dst, 0, 0);
set_sockaddr((struct lkl_sockaddr_in *) &re.rt_genmask, 0, 0);
set_sockaddr((struct lkl_sockaddr_in *) &re.rt_gateway, addr, 0);
re.rt_flags = LKL_RTF_UP | LKL_RTF_GATEWAY;
err = lkl_sys_ioctl(sock, LKL_SIOCADDRT, (long)&re);
lkl_sys_close(sock);
return err;
}
int lkl_if_set_mtu(int ifindex, int mtu)
{
struct lkl_ifreq ifr;
int err, sock;
sock = lkl_sys_socket(LKL_AF_INET, LKL_SOCK_DGRAM, 0);
if (sock < 0)
return sock;
err = ifindex_to_name(sock, &ifr, ifindex);
if (err < 0)
return err;
ifr.lkl_ifr_mtu = mtu;
err = lkl_sys_ioctl(sock, LKL_SIOCSIFMTU, (long)&ifr);
lkl_sys_close(sock);
return err;
}
static inline int ifindex_to_name(int sock, struct lkl_ifreq *ifr, int ifindex)
{
ifr->lkl_ifr_ifindex = ifindex;
return lkl_sys_ioctl(sock, LKL_SIOCGIFNAME, (long)ifr);
}
