netdev - Re: [PATCH 3/5] inet_diag: Extend the meminfo report

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Message-Id: <20111228.134553.1005758963166343587.davem@davemloft.net>
Date:	Wed, 28 Dec 2011 13:45:53 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	xemul@...allels.com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH 3/5] inet_diag: Extend the meminfo report

From: Pavel Emelyanov <xemul@...allels.com>
Date: Wed, 28 Dec 2011 17:38:40 +0400

> Add the backlog length and wmem and rmem buffers limits.
> With this the TCP memory info is full and can be analyzed.
> 
> Few words about extending the existing structure. The nla engine stores lengths of
> fields and the nla parser will parse the new format successfully (checked on the ss
> tool). But new apps will have to take this field's length into account. Hopefully
> this is acceptable price for not introducing another ext bit and structure.
> 
> Singed-off-by: Pavel Emelyanov <xemul@...allels.com>

I think you'll need to add a new extension, rather than create this incompatability.
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