bsd/netinet/tcp_input.c

313 static void tcp_sbsnd_trim(struct sockbuf *sbsnd);
998 tcp_sbsnd_trim(struct sockbuf *sbsnd) {
1000 		((sbsnd->sb_flags & (SB_AUTOSIZE | SB_TRIM)) ==
1002 		(sbsnd->sb_idealsize > 0) &&
1003 		(sbsnd->sb_hiwat > sbsnd->sb_idealsize)) {
1005 		if (sbsnd->sb_cc <= sbsnd->sb_idealsize) {
1006 			trim = sbsnd->sb_hiwat - sbsnd->sb_idealsize;
1008 			trim = sbsnd->sb_hiwat - sbsnd->sb_cc;
1010 		sbreserve(sbsnd, (sbsnd->sb_hiwat - trim));
1012 	if (sbsnd->sb_hiwat <= sbsnd->sb_idealsize)
1013 		sbsnd->sb_flags &= ~(SB_TRIM);