Hi, I want to modify packet and broadcast/multicast to different ports. One way is that at tc ingress, attach a single eBPF program and call multiple "bpf_skb_clone_redirect()". For example: set_mac1, clone_redirect(1), set_mac2, inc_ttl, clone_redirect(2), set_mac3, clone_redirect(3), ...
Sometimes the packet modification part, ex: set_mac1, is huge and instead of doing them sequentially, I want to make it parallel. So I attach another eBPF program to tc egress, and at the original tc ingress eBPF, I simply call multiple clone_redirect() to the corresponding tc egress, and execute the modification (set_mac, inc_ttl) at tc egress BPF, hoping that different CPUs could pick up different egress eBPF to execute the packet modification and balance the load. so my new tc ingress becomes: clone_redirect(1), clone_redirect(2), clone_redirect(3), tc egress at port1: set_mac1, return TC_ACT_OK tc egress at port2: set_mac2, inc_ttl, return TC_ACT_OK Does this make sense? Or is there any better solution? Thanks! William _______________________________________________ iovisor-dev mailing list iovisor-dev@lists.iovisor.org https://lists.iovisor.org/mailman/listinfo/iovisor-dev
