[BPF] rework L2 overlay (vxlan) for performance #9965
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marvin-tigera
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There is not need to copy and fill in the mac addresses, bpf_redir_neigh will do that for us.
Going forward, we will maintain co-re and will eventually deprecate and remove the legacy one. That will get us back to a single fib.h.
bpf_redir_neigh will do it
bpf_redirect_neigh() will do it.
When redirecting to a workload when NAt is required, usually from HEP because of node port, us the destination IP as the next hop in bpf_redir_neigh() to avoid FIB lookup.
IT is a historical artefact and we should name it properly and leave the name tunnel for a generic overlay.
We need to know that we are forwarding from and L2 overlay.
tomastigera
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