ds_add_port
if (ds_add_port(port_id, ldc_id, DS_DHDL_INVALID, NULL, 1) != 0)
rv = ds_add_port(portno, ldc_id, dhdl, dom_name, vlds_ports_inited);
int ds_add_port(uint64_t port_id, uint64_t ldc_id, ds_domain_hdl_t dhdl,