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

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Message-ID: <49DC19D5.7090101@cn.fujitsu.com>
Date:	Wed, 08 Apr 2009 11:28:21 +0800
From:	Shen Feng <shen@...fujitsu.com>
To:	Ben Hutchings <bhutchings@...arflare.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 04/08/2009 10:47 AM, Ben Hutchings wrote:
> 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.

Thanks. That's a good solution.

But I'm still confused.
Why not create another tcp_mem in /proc/sys/net/ipv6?

Shen

> 
> Ben.
> 
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