On 19.11.2019 10:00, Yi Yang (杨燚)-云服务集团 wrote: > Hi, Ilya > > Can you explain what kernel limitations are for TCP for veth? I can't > understand why veth has such limitations only for TCP. I saw a veth bug > (https://tech.vijayp.ca/linux-kernel-bug-delivers-corrupt-tcp-ip-data-to-mes > os-kubernetes-docker-containers-4986f88f7a19) but it has been fixed in 2016.
Hi. Have you read the issue referenced in docs: https://github.com/cilium/cilium/issues/3077 ? In short, TCP stack clones the packets and netif_receive_generic_xdp() drops all the cloned packets. Native XDP for veth seems to work fine. Best regards, Ilya Maximets. _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev
