netdev - Re: [PATCH] gre: copy ToS/DiffServ bits to outer IP header

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Message-ID: <20090714071410.GA4793@urbino.open.ch>
Date:	Tue, 14 Jul 2009 09:14:10 +0200
From:	Andreas Jaggi <aj@...n.ch>
To:	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org, kuznet@....inr.ac.ru, kaber@...sh.net
Subject: Re: [PATCH] gre: copy ToS/DiffServ bits to outer IP header

On Mon, Jul 13, 2009 at 10:44:33AM -0700, David Miller wrote:
> Why not just create a new IFLA_GRE_* attribute to pass in
> flags like this that purely are private to the GRE Linux
> tunnel driver and have nothing to do with values defined
> by GRE tunnel headers at all?

OK. What would be an appropriate place to store such a private flag in
the GRE driver?

I thought of extending the ip_tunnel_parms struct with '__u16 priv_flags'
(But this would break compatibility with the iproute2 tools?)
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