Subject: Re: [RFC bpf-next PATCH] samples/bpf: xdp1 add XDP hardware offload option

From: Jakub Kicinski <[email-masked]>
Date: Tue, 4 Sep 2018 17:09:12 +0200

On Tue, 04 Sep 2018 16:59:19 +0200, Jesper Dangaard Brouer wrote:
> Trying to use XDP hardware offloading via XDP_FLAGS_HW_MODE
> and setting the ifindex in prog_load_attr.ifindex before
> loading the BPF code via bpf_prog_load_xattr().
> 
> This unfortunately does not seem to work...
> - Am I doing something wrong?
> 
> Notice, I also disable the map BPF_MAP_TYPE_PERCPU_ARRAY
> to make sure it was not related to the map (not supporting
> offloading).
> 
> Failed with:
>  # ./xdp1 -O $(</sys/class/net/enp130s0np1/ifindex)
>  libbpf: load bpf program failed: Invalid argument
>  libbpf: failed to load program 'xdp1'
>  libbpf: failed to load object './xdp1_kern.o'
> 
> Tested on kernel 4.18.0-2.el8.x86_64 with driver nfp
>  Ethernet controller: Netronome Systems, Inc. Device 4000

Are you running the BPF capable FW?

https://help.netronome.com/support/solutions/articles/36000050009-agilio-ebpf-2-0-6-extended-berkeley-packet-filter