From: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
To: netdev@vger.kernel.org, Eric Dumazet <edumazet@google.com>,
"David S. Miller" <davem@davemloft.net>
Subject: [PATCH] tcp: convert cached rtt from usec to jiffies when feeding initial rto
Date: Sun, 21 Feb 2016 10:12:39 +0300 [thread overview]
Message-ID: <20160221071239.9977.45366.stgit@buzz> (raw)
Currently it's converted into msecs, thus HZ=1000 intact.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Fixes: 740b0f1841f6 ("tcp: switch rtt estimations to usec resolution")
---
net/ipv4/tcp_metrics.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/ipv4/tcp_metrics.c b/net/ipv4/tcp_metrics.c
index c8cbc2b4b792..a726d7853ce5 100644
--- a/net/ipv4/tcp_metrics.c
+++ b/net/ipv4/tcp_metrics.c
@@ -550,7 +550,7 @@ reset:
*/
if (crtt > tp->srtt_us) {
/* Set RTO like tcp_rtt_estimator(), but from cached RTT. */
- crtt /= 8 * USEC_PER_MSEC;
+ crtt /= 8 * USEC_PER_SEC / HZ;
inet_csk(sk)->icsk_rto = crtt + max(2 * crtt, tcp_rto_min(sk));
} else if (tp->srtt_us == 0) {
/* RFC6298: 5.7 We've failed to get a valid RTT sample from
next reply other threads:[~2016-02-21 17:43 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-21 7:12 Konstantin Khlebnikov [this message]
2016-02-23 23:33 ` [PATCH] tcp: convert cached rtt from usec to jiffies when feeding initial rto David Miller
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