Re: Redirect from NIC to TAP
Jason Wang <[email protected]>
| Newsgroups | org.kernel.vger.xdp-newbies |
|---|---|
| Message-ID | <[email protected]> |
On 2021/2/9 下午5:26, 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.). It should work. I tested with i40e/ixgbe/mlx4 in the past. What eBPF program did you use? (Is it the one in samples/bpf?) I would test it by myself. (It's near to spring festival, so I can only check after the holiday). Thanks > > Thanks > > On Tue, Feb 9, 2021 at 11:21 AM Jesper Dangaard Brouer > <[email protected]> wrote: >> On Tue, 9 Feb 2021 10:31:50 +0200 >> Radu Stoenescu <[email protected]> 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 >> >