netdev - Re: Trying to implement secondary loopback

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Message-ID: <514331BC.4080802@hhi.fraunhofer.de>
Date:	Fri, 15 Mar 2013 15:35:40 +0100
From:	Thomas Martitz <thomas.martitz@....fraunhofer.de>
To:	richard -rw- weinberger <richard.weinberger@...il.com>
CC:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"edumazet@...gle.com" <edumazet@...gle.com>,
	"herbert@...dor.apana.org.au" <herbert@...dor.apana.org.au>
Subject: Re: Trying to implement secondary loopback

Am 15.03.2013 15:32, schrieb richard -rw- weinberger:
> On Fri, Mar 15, 2013 at 3:20 PM, Thomas Martitz
> <thomas.martitz@....fraunhofer.de> wrote:
>>> The real question is, why do you need a second one?
>>> I assume your driver (for the non-existing hardware) is a ethernet driver,
>>> and now you're looking for a way to test your shiny new ethX device,
>>> correct?
>>>
>>
>> Yes. But that's only the first step. Once I have the basic ethX device
>> working I want to make sure the PCIe data transfer is working (with good
>> performance), ideally using the very same test application in user space.
>
> And there is the second loopback device is this picture?
>

Mine is the second one, as I cannot modify "lo". The standard "lo" 
interface is the the first loopback and it seems to be hardcoded to be 
the only one.

Best regards.

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