int vhost_user_create_if(vnet_main_t * vnm, vlib_main_t * vm,
const char * sock_filename, u8 is_server,
u32 * sw_if_index, u64 feature_mask,
int vhost_user_create_if(vnet_main_t * vnm, vlib_main_t * vm,
const char * sock_filename, u8 is_server,
u32 * sw_if_index, u64 feature_mask,