bsd/kern/uipc_socket.c

4002 	int64_t	lowwat = so->so_rcv.sb_lowat;
4006 			lowwat = so->so_rcv.sb_hiwat;
4007 		else if (kn->kn_sdata > lowwat)
4008 			lowwat = kn->kn_sdata;
4014 	return ((kn->kn_flags & EV_OOBAND) || kn->kn_data >= lowwat);
4068 	int64_t	lowwat = so->so_snd.sb_lowat;
4072 			lowwat = so->so_snd.sb_hiwat;
4073 		else if (kn->kn_sdata > lowwat)
4074 			lowwat = kn->kn_sdata;
4076 	if (kn->kn_data >= lowwat) {