Re: [PATCH v4 net-next] tcp: switch rtt estimations to usec resolution
From: Eric Dumazet <hidden>
Date: 2014-02-24 22:19:28
On Mon, 2014-02-24 at 10:24 -0800, Eric Dumazet wrote:
quoted hunk ↗ jump to hunk
index d547075d8300..8e4c43d80784 100644--- a/net/ipv4/tcp_metrics.c +++ b/net/ipv4/tcp_metrics.c
...
- if (crtt > tp->srtt) {
+ if (crtt > tp->srtt_us) {
/* Set RTO like tcp_rtt_estimator(), but from cached RTT. */
crtt >>= 3;
- inet_csk(sk)->icsk_rto = crtt + max(2 * crtt, tcp_rto_min(sk));
- } else if (tp->srtt == 0) {This part is buggy it needs to be : crtt /= 8 * USEC_PER_MSEC; inet_csk(sk)->icsk_rto = crtt + max(2 * crtt, tcp_rto_min(sk));