Re: [PATCH v2 bpf-next] cpumap: bulk skb using netif_receive_skb_list

Toke Høiland-Jørgensen
2021-04-13T19:41:53Z

Lorenzo Bianconi <lorenzo@kernel.org> writes:

> Rely on netif_receive_skb_list routine to send skbs converted from
> xdp_frames in cpu_map_kthread_run in order to improve i-cache usage.
> The proposed patch has been tested running xdp_redirect_cpu bpf sample
> available in the kernel tree that is used to redirect UDP frames from
> ixgbe driver to a cpumap entry and then to the networking stack.
> UDP frames are generated using pkt_gen.
>
> $xdp_redirect_cpu --cpu <cpu> --progname xdp_cpu_map0 --dev <eth>
>
> bpf-next: ~2.2Mpps
> bpf-next + cpumap skb-list: ~3.15Mpps

Nice! :)

Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>