linux-kernel - Re: [PATCH] IPv4/IPv6: update sysctl files

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Message-Id: <1239158863.11534.52.camel@deadeye.i.decadent.org.uk>
Date:	Wed, 08 Apr 2009 03:47:43 +0100
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	Shen Feng <shen@...fujitsu.com>
Cc:	davem@...emloft.net, Andrew Morton <akpm@...ux-foundation.org>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] IPv4/IPv6: update sysctl files

On Wed, 2009-04-08 at 02:39 +0000, Shen Feng wrote:
> Now the following sysctl files in /proc/sys/net/ipv4 are used by
> both IPv4 and IPv6.
> tcp_mem  tcp_rmem  tcp_wmem
> udp_mem  udp_rmem_min  udp_wmem_min
> Putting them in /proc/sys/net/ipv4 is not a good choice.
[...]

But this is part of the ABI to userland.  You cannot remove sysctl files
without long advance notice documented in feature-removal-schedule.txt
(if at all).

If it is possible to add the paths
/proc/sys/net/{tcp,udp} while retaining aliases under /proc/sys/net/ipv4
then that might be a workable solution.

Ben.

-- 
Ben Hutchings, Senior Software Engineer, Solarflare Communications
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.
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