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consider sb_lowat when limiting the transmit length to keep acks on the wire

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This commit is contained in:
dbj 2006-09-28 04:32:47 +00:00
parent ed4d175ee4
commit 7c8cd0a2c8
1 changed files with 4 additions and 3 deletions
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7
sys/netinet/tcp_output.c
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@ -1,4 +1,4 @@
/* $NetBSD: tcp_output.c,v 1.143 2006/09/05 00:29:36 rpaulo Exp $ */
/* $NetBSD: tcp_output.c,v 1.144 2006/09/28 04:32:47 dbj Exp $ */
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@ -142,7 +142,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: tcp_output.c,v 1.143 2006/09/05 00:29:36 rpaulo Exp $");
__KERNEL_RCSID(0, "$NetBSD: tcp_output.c,v 1.144 2006/09/28 04:32:47 dbj Exp $");
#include "opt_inet.h"
#include "opt_ipsec.h"
@ -397,7 +397,8 @@ tcp_segsize(struct tcpcb *tp, int *txsegsizep, int *rxsegsizep)
* transmit.
*/
if (so)
*txsegsizep = min(so->so_snd.sb_hiwat >> 1, *txsegsizep);
*txsegsizep = min((so->so_snd.sb_hiwat -
so->so_snd.sb_lowat + 1) >> 1, *txsegsizep);
*rxsegsizep = min(tp->t_ourmss - optlen, size);
if (*txsegsizep != tp->t_segsz) {