tap: fix the crash
Crash will happen when someone will try to setup a tap interface
in host namespace without providing the host side of tap interface
custom name. This patch fixes the problem by using the default name
in this case.
@@ -175,6 +175,9 @@ tap_create_if (vlib_main_t * vm, tap_create_if_args_t * args)
_IOCTL (vif->tap_fd, TUNSETIFF, (void *) &ifr);
vif->ifindex = if_nametoindex (ifr.ifr_ifrn.ifrn_name);
+ if (!args->host_if_name)
+ args->host_if_name = (u8 *) ifr.ifr_ifrn.ifrn_name;
+
unsigned int offload = 0;
hdrsz = sizeof (struct virtio_net_hdr_v1);
if (args->tap_flags & TAP_FLAG_GSO)
