netdev - Re: [PATCH 5/7] CAN: Add virtual CAN netdevice driver

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Message-Id: <20070927.121802.102416572.davem@davemloft.net>
Date:	Thu, 27 Sep 2007 12:18:02 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	ebiederm@...ssion.com
Cc:	urs@...ogud.escape.de, netdev@...r.kernel.org, kaber@...sh.net,
	tglx@...utronix.de, oliver@...tkopp.net,
	oliver.hartkopp@...kswagen.de, urs.thuermann@...kswagen.de,
	dlezcano@...ibm.com
Subject: Re: [PATCH 5/7] CAN: Add virtual CAN netdevice driver

From: ebiederm@...ssion.com (Eric W. Biederman)
Date: Thu, 27 Sep 2007 10:16:37 -0600

> 
> I guess in particular IFF_LOOPBACK means that all packets from
> a device will come right back to the current machine, and go
> nowhere else.
> 
> That usage sounds completely different then the CAN usage which
> appears to mean.  Broadcast packets will be returned to this machine
> as well as being sent out onto the wire.

It's bogus and it should be removed from the CAN code, they
can add some other attribute to achieve their goals.
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