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tcp: convert cached rtt from usec to jiffies when feeding initial rto 

Currently it's converted into msecs, thus HZ=1000 intact.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Fixes: 740b0f1841 ("tcp: switch rtt estimations to usec resolution")
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Konstantin Khlebnikov 2016-02-21 10:12:39 +03:00 committed by David S. Miller
parent fb5eb24cdd
commit 9bdfb3b79e
1 changed files with 1 additions and 1 deletions
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2
net/ipv4/tcp_metrics.c
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@ -550,7 +550,7 @@ void tcp_init_metrics(struct sock *sk)
*/
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