netdev - Re: [patch net-next-2.6 1/2] net: allow to change carrier via sysfs

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Message-ID: <20110831084511.GD2010@minipsycho.brq.redhat.com>
Date:	Wed, 31 Aug 2011 10:45:12 +0200
From:	Jiri Pirko <jpirko@...hat.com>
To:	Michał Mirosław <mirqus@...il.com>
Cc:	netdev@...r.kernel.org, davem@...emloft.net,
	eric.dumazet@...il.com, bhutchings@...arflare.com,
	shemminger@...tta.com
Subject: Re: [patch net-next-2.6 1/2] net: allow to change carrier via sysfs

Wed, Aug 31, 2011 at 10:33:50AM CEST, mirqus@...il.com wrote:
>W dniu 31 sierpnia 2011 10:26 użytkownik Jiri Pirko <jpirko@...hat.com> napisał:
>> Tue, Aug 30, 2011 at 08:11:37PM CEST, mirqus@...il.com wrote:
>>>2011/8/30 Jiri Pirko <jpirko@...hat.com>:
>>>> Allow to write to "carrier" attribute. Devices may implement ndo_change_carrier
>>>> callback to allow changing carrier from userspace.
>>>Do you expect drivers using implementation different than just calling
>>>netif_carrier_on/off? Or is it supposed to also e.g. power down PHYs?
>> Yes, generally it can be used also for en/disable phy, for testing
>> purposes if hw and driver would support it.
>
>I'd like to see this working for GRE tunnel devices (for keepalive
>daemon to be able to indicate to routing daemons whether tunnel is
>really working) - implementation would be identical to dummy's case.
>Should I prepare a patch or can I leave it to you?

Ok, I can include it to this patchset (I'm going to repost first patch
anyway)
>
>Best Regards,
>Michał Mirosław
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