Re: Redirect from NIC to TAP

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On Tue, Feb 09, 2021 at 11:26:06AM +0200, Radu Stoenescu wrote:
> Hello
> 
> My physical NIC is a Netronome (I can come back with exact model type
> and driver version).
> 
> Redirect NIC to TAP doesn't work when XDP is attached in driver mode.
> It works when they are both in generic mode. I haven't tried other
> combinations of attachment modes (one driver, other generic etc.).

Looks like Netronome driver still doesn't support XDP_REDIRECT in native
mode.

CC: Simon

Simon, any plans on adding support for redirect?

> 
> Thanks
> 
> On Tue, Feb 9, 2021 at 11:21 AM Jesper Dangaard Brouer
> <brouer@xxxxxxxxxx> wrote:
> >
> > On Tue, 9 Feb 2021 10:31:50 +0200
> > Radu Stoenescu <radu.stoe@xxxxxxxxx> wrote:
> >
> > > Is it possible to redirect packets from XDP program attached in driver
> > > mode to a physical NIC to a TAP interface?
> >
> > Cc. Jason Wang as I think he implemented this, but I'm not 100% sure.
> > Maybe Jason can remember?
> > (or point me to the relevant code that I can check).
> >
> > > The same works fine if the XDP programs are attached in generic mode.
> >
> > So, you have tried and it doesn't work.
> >
> > What is your setup?
> >
> > --
> > Best regards,
> >   Jesper Dangaard Brouer
> >   MSc.CS, Principal Kernel Engineer at Red Hat
> >   LinkedIn: http://www.linkedin.com/in/brouer
> >
> 
> 
> -- 
> Radu Stoenescu



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