netdev - Re: [PATCH 2/4] ipgre: follow state of lower device

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Message-ID: <20120503154025.0845359e@nehalam.linuxnetplumber.net>
Date:	Thu, 3 May 2012 15:40:25 -0700
From:	Stephen Hemminger <shemminger@...tta.com>
To:	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH 2/4] ipgre: follow state of lower device

On Sat, 14 Apr 2012 14:53:02 -0400 (EDT)
David Miller <davem@...emloft.net> wrote:

> From: Stephen Hemminger <shemminger@...tta.com>
> Date: Thu, 12 Apr 2012 09:31:17 -0700
> 
> > GRE tunnels like other layered devices should propogate
> > carrier and RFC2863 state from lower device to tunnel.
> > 
> > Signed-off-by: Stephen Hemminger <shemminger@...tta.com>
> 
> Like others I don't like the ugly hash traversal.
> 
> A small hash on ifindex, iflink, or whatever ought to be easy and make
> the code look much nicer.
> 
> Longer term project is that a lot of this tunneling code can be
> commonized at some point.

The whole set of tunnels needs to be cleaned up to be something modular, clean
and cached like the code in OpenVswitch.
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