On Tue, Jan 24, 2017 at 11:33:56PM -0800, Alexei Starovoitov wrote: > On Tue, Jan 24, 2017 at 8:02 PM, John Fastabend > <john.fastab...@gmail.com> wrote: > > > > Finally just to point out here are the drivers with XDP support on latest > > net tree, > > > > mlx/mlx5 > > mlx/mlx4 > > qlogic/qede > > netronome/nfp > > virtio_net > > > > And here is the list of adjust header support, > > > > mlx/mlx4 > > > > in net-next it's actually: > yes: mlx4, mlx5 > no: qede, nfp, virtio > while nfp and virtio are working on it. > > xdp_adjust_head() is must have for load balancer,
What amount of head space does it need? 70 bytes to do vxlan kind of thing? > so the sooner it lands for virtio the easier it will be > to develop xdp programs. Initially I expected > e1k+xdp to be the base line for debugging and > development of xdp programs, but since not everyone > agreed on e1k the virtio+xdp filled in the gap. > So without adjust_head in virtio I see very little use for it > in our environment. > It is a must have feature regardless of timing. > I will backport whatever is necessary, but distros > will stick with official releases and imo it's not great > from xdp adoption point of view to have > virtio driver lacking key features. If everyone can agree it's net-next material then I'm happy. -- MST
