Re: UDP/IP via Ethernet in real time (config-preempt patch)

[Neil Horman]

On Wed, Jul 18, 2007 at 04:26:00PM +0200, M. Koehrer wrote:
> Hi,
> 
> I had a short look at the netconsole.txt and the correspondent code.
> It seems to be based on netpoll. This looks quite interesting for my needs.
> However, it seems to be only accessible from kernel space and not 
> from user space.
> I want to run a real time application in user space and do the UDP accesses 
> from there. 
> Is this somehow possible with the netpoll code? I did not see a callable interface
> from user space side.
> 
> 
Raw or Packet sockets then (AF_RAW / AF_PACKET)?

Neil

> Thanks for any feedback on this topic.
> 
> Regards
> 
> Mathias
> > I would dump the idea of using UDP and inject raw ethernet frames onto
> > the LAN segment. You can do this by bypassing almost all of the
> > net-stack I'm sure of it. I think the netconsole kernel code does
> > it...
> > 
> > Documentation/networking/netconsole.txt
> > 
> 
> 
> -- 
> Mathias Koehrer
> mathias_koehrer@xxxxxxxx
> 
> 
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-- 
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