tcp_do_sack       111 netinet/tcp_subr.c int	tcp_do_sack = 1;	/* RFC 2018 selective ACKs */
tcp_do_sack       487 netinet/tcp_subr.c 	tp->sack_enable = tcp_do_sack;
tcp_do_sack       912 netinet/tcp_usrreq.c 		    &tcp_do_sack));
tcp_do_sack       560 netinet/tcp_var.h extern	int tcp_do_sack;	/* SACK enabled/disabled */