Fix Avoid crash in vnet_delete_sub_interface routine
vnet_get_sw_interface shoud be called after sw_if_index is validated.
@@ -739,12 +739,13 @@ int
vnet_delete_sub_interface (u32 sw_if_index)
{
vnet_main_t *vnm = vnet_get_main ();
- vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
+ vnet_sw_interface_t *si;
int rv = 0;
if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
return VNET_API_ERROR_INVALID_SW_IF_INDEX;
+ si = vnet_get_sw_interface (vnm, sw_if_index);
if (si->type == VNET_SW_INTERFACE_TYPE_SUB ||
si->type == VNET_SW_INTERFACE_TYPE_P2P)
{
