On 07/26/2018 07:40 AM, Toshiaki Makita wrote: > From: Toshiaki Makita <makita.toshi...@lab.ntt.co.jp> > > This allows NIC's XDP to redirect packets to veth. The destination veth > device enqueues redirected packets to the napi ring of its peer, then > they are processed by XDP on its peer veth device. > This can be thought as calling another XDP program by XDP program using > REDIRECT, when the peer enables driver XDP. > > Note that when the peer veth device does not set driver xdp, redirected > packets will be dropped because the peer is not ready for NAPI. > > v4: > - Don't use xdp_ok_fwd_dev() because checking IFF_UP is not necessary. > Add comments about it and check only MTU. > > v2: > - Drop the part converting xdp_frame into skb when XDP is not enabled. > - Implement bulk interface of ndo_xdp_xmit. > - Implement XDP_XMIT_FLUSH bit and drop ndo_xdp_flush. > > Signed-off-by: Toshiaki Makita <makita.toshi...@lab.ntt.co.jp> > --- > drivers/net/veth.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 51 insertions(+) >
Acked-by: John Fastabend <john.fastab...@gmail.com>
