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Date:	Mon, 11 Jun 2007 13:42:57 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	Ben Greear <greearb@...delatech.com>
CC:	Pavel Emelianov <xemul@...nvz.org>,
	David Miller <davem@...emloft.net>,
	Linux Netdev List <netdev@...r.kernel.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Daniel Lezcano <dlezcano@...ibm.com>,
	Stephen Hemminger <shemminger@...ux-foundation.org>,
	Kirill Korotaev <dev@...nvz.org>,
	Linux Containers <containers@...ts.osdl.org>
Subject: Re: [PATCH] Virtual ethernet tunnel (v.2)

Ben Greear wrote:
> Pavel Emelianov wrote:
> 
>>> I would also like some way to identify veth from other device types,
>>> preferably
>>> something like a value in sysfs.   However, that should not hold up
>>>     
>>
>>
>> We can do this with ethtool. It can get and print the driver name of
>> the device.
>>   
> 
> I think I'd like something in sysfs that we could query for any
> interface.  Possible return
> strings could be:
> VLAN
> VETH
> ETH
> PPP
> BRIDGE
> AP /* wifi access point interface */
> STA /* wifi station */
> ....
> 
> I will cook up a patch for consideration after veth goes in.


The rtnl_link API gives you the name of the driver (IFLA_INFO_KIND).

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