On Fri, Jan 22, 2021 at 8:13 PM Enke Chen <enkechen2...@gmail.com> wrote:
>
> From: Enke Chen <enc...@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 <enc...@paloaltonetworks.com>
> Reviewed-by: Neal Cardwell <ncardw...@google.com>
> ---SGTM, thanks ! Signed-off-by: Eric Dumazet <eduma...@google.com>
