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[BPF] always use bpf_redir_neigh after FIB lookup #9423

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[BPF] always use bpf_redir_neigh after FIB lookup #9423

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Commits on Nov 5, 2024

  1. [BPF] always use bpf_redir_neigh after FIB lookup 

    There is not need to copy and fill in the mac addresses, bpf_redir_neigh
will do that for us.
    @tomastigera
    tomastigera committed Nov 5, 2024
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  2. [BPF] split fib.h into co-re and legacy 

    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.
    @tomastigera
    tomastigera committed Nov 5, 2024
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  3. [BPF] skip neigh table lookup in fib lookup 

    bpf_redir_neigh will do it
    @tomastigera
    tomastigera committed Nov 5, 2024
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  4. [BPF] if you know where to, skip explicit FIB lookup 

    bpf_redirect_neigh() will do it.
    @tomastigera
    tomastigera committed Nov 5, 2024
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  5. [BPF] use dst as nh when redirecting to workload 

    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.
    @tomastigera
    tomastigera committed Nov 5, 2024
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