tap_csum_offload_enable_disable (vlib_main_t * vm, u32 sw_if_index,
int enable_disable);
int tap_dump_ifs (tap_interface_details_t ** out_tapids);
tap_csum_offload_enable_disable (vlib_main_t * vm, u32 sw_if_index,
int enable_disable);
int tap_dump_ifs (tap_interface_details_t ** out_tapids);