D26446.id77076.diff
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D26446.id77076.diff
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	Index: sys/netinet/tcp_sack.c
	===================================================================
	--- sys/netinet/tcp_sack.c
	+++ sys/netinet/tcp_sack.c
	@@ -787,15 +787,16 @@
	tcp_sack_partialack(struct tcpcb tp, struct tcphdr th)
	{
	int num_segs = 1;
	+ int maxseg = tcp_maxseg(tp);

	INP_WLOCK_ASSERT(tp->t_inpcb);
	tcp_timer_activate(tp, TT_REXMT, 0);
	tp->t_rtttime = 0;
	/* Send one or 2 segments based on how much new data was acked. */
	- if ((BYTES_THIS_ACK(tp, th) / tp->t_maxseg) >= 2)
	+ if ((BYTES_THIS_ACK(tp, th) / maxseg) >= 2)
	num_segs = 2;
	tp->snd_cwnd = (tp->sackhint.sack_bytes_rexmit +
	- (tp->snd_nxt - tp->snd_recover) + num_segs * tp->t_maxseg);
	+ (tp->snd_nxt - tp->snd_recover) + num_segs * maxseg);
	if (tp->snd_cwnd > tp->snd_ssthresh)
	tp->snd_cwnd = tp->snd_ssthresh;
	tp->t_flags \|= TF_ACKNOW;