On Mon, 24 Apr 2017 18:26:43 -0400 (EDT) David Miller <da...@davemloft.net> wrote:
> From: Jesper Dangaard Brouer <bro...@redhat.com> > Date: Mon, 24 Apr 2017 16:24:05 +0200 > > > I've done a very detailed evaluation of this patch, and I've created a > > blogpost like report here: > > > > > > https://prototype-kernel.readthedocs.io/en/latest/blogposts/xdp25_eval_generic_xdp_tx.html > > > > Thanks for doing this Jesper. > > > I didn't evaluate the adjust_head part, so I hope Andy is still > > planning to validate that part? > > I was hoping he would post some results today as well. > > Andy, how goes it? :) > > Once the basic patch is ready and integrated in we can try to do > xmit_more in generic XDP and see what that does for XDP_TX > performance. I agree, we can do xmit_more for generic-XDP later, and it should not be that hard... basically replacing netdev_start_xmit() with dev_hard_start_xmit() in generic_xdp_tx(), and finding some place to store a XDP-skb-pointer (functioning as the skb-list) that will be "flushed" like __kfree_skb_flush(). -- Best regards, Jesper Dangaard Brouer MSc.CS, Principal Kernel Engineer at Red Hat LinkedIn: http://www.linkedin.com/in/brouer
