netdev - Re: [PATCH 2/2 net-next] ip_tunnel: operstate support and link state transfer

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Message-ID: <CALnjE+qQWampgB5OOR54XkbuBe+Hb6p9d15aPvSEAvjxgXqhwQ@mail.gmail.com>
Date:	Tue, 6 Aug 2013 10:42:53 -0700
From:	Pravin Shelar <pshelar@...ira.com>
To:	Stephen Hemminger <stephen@...workplumber.org>
Cc:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: [PATCH 2/2 net-next] ip_tunnel: operstate support and link state transfer

On Mon, Aug 5, 2013 at 10:53 PM, Stephen Hemminger
<stephen@...workplumber.org> wrote:
> Tunnel devices should reflect the carrier state of the lower device.
> I.e if carrier goes down on the lower (ethernet) device, it should
> change on the tunnel as well.
>
> This patch also adds full RFC2863 compatible state so that the
> tunnel state can be controlled from user space as described in
> Documentation/networking/operstats.txt
>
> Example of usage:
> ip li add tnl1 mode dormant \
>   type gretap remote 172.19.20.21 local 172.16.17.18 dev eth1
> ip li set dev tnl1 up
> ip li set dev tnl1 state UP
>
> In real life, this would be managed by tunnel broker, not
> iproute2 shell commands.
>
>
I sent out similar patch which try to add this feature at ip_tunnel
generic layer rather than in tunnel implementation.  This way we can
share single notifier for all tunneling protocols.
Can you have something similar?
http://marc.info/?l=linux-netdev&m=135761231222711&w=2
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