ack_required     1888 dev/ic/mpi.c   	    DEVNAME(sc), enp->ack_required, enp->msg_flags);
ack_required     1925 dev/ic/mpi.c   		if (enp->ack_required)
ack_required     1975 dev/ic/mpi.c   	if (enp->ack_required)
ack_required      614 dev/ic/mpireg.h 	u_int8_t		ack_required;