D18032.diff
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	Index: head/sys/netinet/tcp_stacks/rack.c
	===================================================================
	--- head/sys/netinet/tcp_stacks/rack.c
	+++ head/sys/netinet/tcp_stacks/rack.c
	@@ -8493,9 +8493,7 @@
	pass, rsm);
	if ((tp->t_flags & TF_FORCEDATA) == 0 \|\|
	(rack->rc_in_persist == 0)) {
	-#ifdef NETFLIX_STATS
	tcp_seq startseq = tp->snd_nxt;
	-#endif

	/*
	* Advance snd_nxt over sequence space of this segment.
	@@ -8527,6 +8525,17 @@
	tp->t_acktime = ticks;
	}
	tp->snd_max = tp->snd_nxt;
	+ /*
	+ * Time this transmission if not a retransmission and
	+ * not currently timing anything.
	+ * This is only relevant in case of switching back to
	+ * the base stack.
	+ */
	+ if (tp->t_rtttime == 0) {
	+ tp->t_rtttime = ticks;
	+ tp->t_rtseq = startseq;
	+ TCPSTAT_INC(tcps_segstimed);
	+ }
	#ifdef NETFLIX_STATS
	if (!(tp->t_flags & TF_GPUTINPROG) && len) {
	tp->t_flags \|= TF_GPUTINPROG;