Re: Expose filtered CAN interface to processes

[Andri Yngvason <andri.yngvason@marel.com>]

On Fri, Jan 29, 2016 at 09:53:01PM +0000, Osborne, Paul wrote:
> 
> Hello Oliver/Andri,
> 
> >> I am new to network namespaces; Am I missing something?  Is this a
> >> real use case for network namespace support?  It sounded like there
> >> was uncertainty on this point with the RFC that was posted back in
> >> September by Andri: http://comments.gmane.org/gmane.linux.can/8589.
> >
> > Yes. I think this would be the right way to go.
> >
> > My current idea regarding namespace aware virtual CAN interfaces is to create
> > virtual CAN interfaces inside a network namespace. These 'vcan with namespace'
> > interfaces could then be connected via cangw in the initial (real world)
> > namespace to other can/vcan interfaces (with/without namespace) with cangw rules.
> >
> > The good thing about this approach is that you can use the filter and
> > modification capabilities from cangw at the same time.
> 
> Alright, good to know I am not barking up the wrong tree.  As I am
> needing this functionality in the not-too-distant future, I may take a
> shot at putting something together based on the work Andri has done
> and your comments.
>
That would be much appreciated. My patch set crashes on my SMP system but not on
a non-SMP qemu VM.

Feel free to ask me questions. I'll try to answer to the best of my knowledge.

Thanks,
Andri