using ebpf for speeding-up

[giangndm]

We can use ebpf for

• Re-routing packet to other nodes
• Duplicate packets with bpf_clone_redirect

But this method only work with UDP transport without p2p encryption.

TODO:

• Implement OffloadRouting Mechanism
• Implement Rewrite for routing rule
• Implement bpf_clone_redirect for PubSub