+ /*
+ * make sure host side of interface is 'UP' before binding AF_PACKET
+ * socket on it.
+ */
+ if ((fd2 = socket (AF_UNIX, SOCK_DGRAM, 0)) < 0)
+ {
+ vlib_log_debug (apm->log_class,
+ "Failed to create AF_UNIX socket: %s (errno %d)",
+ strerror (errno), errno);
+ ret = VNET_API_ERROR_SYSCALL_ERROR_1;
+ goto error;
+ }
+
+ clib_memcpy (ifr.ifr_name, (const char *) arg->host_if_name,
+ vec_len (arg->host_if_name));
+ if (ioctl (fd2, SIOCGIFINDEX, &ifr) < 0)
+ {
+ vlib_log_debug (
+ apm->log_class,
+ "Failed to retrieve the interface (%s) index: %s (errno %d)",
+ arg->host_if_name, strerror (errno), errno);
+ ret = VNET_API_ERROR_INVALID_INTERFACE;
+ goto error;
+ }
+
+ host_if_index = ifr.ifr_ifindex;
+ if (ioctl (fd2, SIOCGIFFLAGS, &ifr) < 0)
+ {
+ vlib_log_debug (apm->log_class,
+ "Failed to get the active flag: %s (errno %d)",
+ strerror (errno), errno);
+ ret = VNET_API_ERROR_SYSCALL_ERROR_1;
+ goto error;
+ }
+
+ if (!(ifr.ifr_flags & IFF_UP))
+ {
+ ifr.ifr_flags |= IFF_UP;
+ if (ioctl (fd2, SIOCSIFFLAGS, &ifr) < 0)
+ {
+ vlib_log_debug (apm->log_class,
+ "Failed to set the active flag: %s (errno %d)",
+ strerror (errno), errno);
+ ret = VNET_API_ERROR_SYSCALL_ERROR_1;
+ goto error;
+ }
+ }
+
+ if (fd2 > -1)
+ {
+ close (fd2);
+ fd2 = -1;
+ }
+
+ ret = create_packet_v2_sock (host_if_index, rx_req, tx_req, &fd, &ring);