/* call ioctl system call */
int vrf_if_ioctl(unsigned long request, caddr_t buffer, vrf_id_t vrf_id)
{
int sock;
int ret;
int err = 0;
frr_elevate_privs(&zserv_privs) {
sock = vrf_socket(AF_INET, SOCK_DGRAM, 0, vrf_id, NULL);
if (sock < 0) {
zlog_err("Cannot create UDP socket: %s",
safe_strerror(errno));
exit(1);
}
ret = vrf_ioctl(vrf_id, sock, request, buffer);
if (ret < 0)
err = errno;
}
close(sock);
if (ret < 0) {
errno = err;
return ret;
}
return 0;
}
static int get_iflink_speed(struct interface *interface)
{
struct ifreq ifdata;
struct ethtool_cmd ecmd;
int sd;
int rc;
const char *ifname = interface->name;
/* initialize struct */
memset(&ifdata, 0, sizeof(ifdata));
/* set interface name */
strlcpy(ifdata.ifr_name, ifname, sizeof(ifdata.ifr_name));
/* initialize ethtool interface */
memset(&ecmd, 0, sizeof(ecmd));
ecmd.cmd = ETHTOOL_GSET; /* ETHTOOL_GLINK */
ifdata.ifr_data = (caddr_t)&ecmd;
/* use ioctl to get IP address of an interface */
frr_elevate_privs(&zserv_privs) {
sd = vrf_socket(PF_INET, SOCK_DGRAM, IPPROTO_IP,
interface->vrf_id,
NULL);
if (sd < 0) {
if (IS_ZEBRA_DEBUG_KERNEL)
zlog_debug("Failure to read interface %s speed: %d %s",
ifname, errno, safe_strerror(errno));
return 0;
}
/* Get the current link state for the interface */
rc = vrf_ioctl(interface->vrf_id, sd, SIOCETHTOOL,
(char *)&ifdata);
}
if (rc < 0) {
if (IS_ZEBRA_DEBUG_KERNEL)
zlog_debug(
"IOCTL failure to read interface %s speed: %d %s",
ifname, errno, safe_strerror(errno));
ecmd.speed_hi = 0;
ecmd.speed = 0;
}
close(sd);
return (ecmd.speed_hi << 16) | ecmd.speed;
}
