netdev - Re: [PATCH v2] tcp: split tcp_ecn sysctl knob to distinguish between IPv4 and IPv6

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Date:	Thu, 03 Jan 2013 05:13:27 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Hannes Frederic Sowa <hannes@...essinduktion.org>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH v2] tcp: split tcp_ecn sysctl knob to distinguish
 between IPv4 and IPv6

On Thu, 2013-01-03 at 13:57 +0100, Hannes Frederic Sowa wrote:

> Currently not, but I will try. :)
> 
> Is the direction to split the sysctl ok? Or should it be a unified sysctl for
> ipv4/ipv6 and only be separate per namespace?
> 

I fixed some ECN glitches in IPv6 in the past, I am not sure we can
assume IPv6 gear is ECN bug free. In fact it might be the opposite.

So adding a per net sysctl would allow a better tuning for experiments,
and allow some applications to use a private netns and change their
sysctl.

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