lkml.org 
[lkml]   [2021]   [Jan]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH net] tcp: make TCP_USER_TIMEOUT accurate for zero window probes
Hi, Jakub:

In terms of backporting, this patch should go together with:

9d9b1ee0b2d1 tcp: fix TCP_USER_TIMEOUT with zero window

Thanks. -- Enke

On Fri, Jan 22, 2021 at 05:43:25PM -0800, Jakub Kicinski wrote:
> On Fri, 22 Jan 2021 11:13:06 -0800 Enke Chen 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>
>
> This is targeting net, any guidance on Fixes / backporting?

\
 
 \ /
  Last update: 2021-01-23 03:31    [W:0.035 / U:0.940 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site