_port_dispatch
(void) _port_dispatch(npp->np_port, 0, PORT_SOURCE_AIO,
(void) _port_dispatch(npp->np_lio_port, 0, PORT_SOURCE_AIO,
extern int _port_dispatch(int, int, int, int, uintptr_t, void *);
ret = _port_dispatch(tcdp->tcd_port, 0, PORT_SOURCE_MQ,
if (_port_dispatch(tcdp->tcd_port, 0,
extern int _port_dispatch(int, int, int, int, uintptr_t, void *);