clib_memset (a->busy_##n##_port_refcounts, 0, sizeof(a->busy_##n##_port_refcounts)); \
a->busy_##n##_ports = 0; \
vec_validate_init_empty (a->busy_##n##_ports_per_thread, tm->n_vlib_mains - 1, 0);
clib_memset (a->busy_##n##_port_refcounts, 0, sizeof(a->busy_##n##_port_refcounts)); \
a->busy_##n##_ports = 0; \
vec_validate_init_empty (a->busy_##n##_ports_per_thread, tm->n_vlib_mains - 1, 0);