On Wed, Aug 19, 2020 at 11:08:31AM -0300, Rafael Vargas wrote: > Em sex., 7 de ago. de 2020 às 12:51, Rafael Vargas <vargas@xxxxxxxxx> escreveu: > > [...] > > Using kernel 5.8 (mainline from kernel.org) and a Lenovo Intel X722 > > controller (using the i40e driver). Loading any XDP program to this > > driver will immediately crash with a Kernel Panic. > >[...] > Hi Rafael, > I've tested with the net-next kernel and there is no Kernel Panic > there, but looks like native XDP support is not working on i40e, as > iproute2 reports it as xdpgeneric. Is this correct or am I missing > something in the way I load my programs (libbpf's > bpf_set_link_xdp_fd)? > We're aware of the issue with X722 and have the fix cooking, in general native mode works on i40e, but you'll see issues with X722. We'll submit a patch ASAP. If it's reported as xdpgeneric, are you sure you set XDP_FLAGS_DRV_MODE flag when calling bpf_set_link_xdp_fd? > Also the driver that is currently supplied by Intel and the one > supplied in the kernel sources seems to have diverged... Out of tree driver does not have AF_XDP in place as of now, however XDP is supposed to work fine, again, not with X722.
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