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Date:	Wed, 28 Jul 2010 10:23:24 +0200
From:	Matthias Fuchs <>
To:	Wolfgang Grandegger <>
Cc:	Linux Netdev List <>,
Subject: Re: can: expected receive behavior broken

plx_pci/sja1000 + esd_usb2

Should be easy to reproduce.


On Wednesday 28 July 2010 10:17, Wolfgang Grandegger wrote:
> On 07/28/2010 09:56 AM, Matthias Fuchs wrote:
> > Hi,
> > 
> > I just noticed that the receive behavior of CAN sockets is broken
> > in current net-next-2.6.
> > I wrote some simple code that receives messages and echos them back to
> > the bus. When I now trigger one single message on the bus, I get
> > this message received and echoed back in an endless loop.
> > 
> > I do not touch the sockopts CAN_RAW_LOOPBACK or CAN_RAW_RECV_OWN_MSGS in my code.
> > Only (!) setting CAN_RAW_LOOPBACK to 0 helps at the moment. But this behavior
> > actually has nothing to do with LOOPBACK but more with RECV_OWN_MSGS.
> Sounds wired! What driver are you using?
> Wolfgang.
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