On Fri, 26 Jun 2020 14:40:38 +0300 Denis Kirjanov wrote:
> The patch adds a basic XDP processing to xen-netfront driver.
>
> We ran an XDP program for an RX response received from netback
> driver. Also we request xen-netback to adjust data offset for
> bpf_xdp_adjust_head() header space for custom headers.
>
> synchronization between frontend and backend parts is done
> by using xenbus state switching:
> Reconfiguring -> Reconfigured- > Connected
>
> UDP packets drop rate using xdp program is around 310 kpps
> using ./pktgen_sample04_many_flows.sh and 160 kpps without the patch.
>
> Signed-off-by: Denis Kirjanov <k...@linux-powerpc.org>
Still here:
drivers/net/xen-netfront.c: In function xennet_xdp_xmit_one:
drivers/net/xen-netfront.c:581:31: warning: variable tx set but not used
[-Wunused-but-set-variable]
581 | struct xen_netif_tx_request *tx;
| ^~
