Messages in this thread | | | From | Eric Dumazet <> | Date | Fri, 22 Jan 2021 21:41:27 +0100 | Subject | Re: [PATCH net] tcp: make TCP_USER_TIMEOUT accurate for zero window probes |
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On Fri, Jan 22, 2021 at 8:13 PM Enke Chen <enkechen2020@gmail.com> wrote: > > From: Enke Chen <enchen@paloaltonetworks.com> > > The TCP_USER_TIMEOUT is checked by the 0-window probe timer. As the > timer has backoff with a max interval of about two minutes, the > actual timeout for TCP_USER_TIMEOUT can be off by up to two minutes. > > In this patch the TCP_USER_TIMEOUT is made more accurate by taking it > into account when computing the timer value for the 0-window probes. > > This patch is similar to the one that made TCP_USER_TIMEOUT accurate for > RTOs in commit b701a99e431d ("tcp: Add tcp_clamp_rto_to_user_timeout() > helper to improve accuracy"). > > Signed-off-by: Enke Chen <enchen@paloaltonetworks.com> > Reviewed-by: Neal Cardwell <ncardwell@google.com> > ---
SGTM, thanks !
Signed-off-by: Eric Dumazet <edumazet@google.com>
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