> I'd like to implement a BSD Packet Filter (BPF) inside the linux kernel,
> at least compatible with the original one. Before going much deeper, I'd
> like to know if anyone tried to do this before.
> Has someone ever heard of such a project?
We implement the filter functionality but we didnt do it compatibly as we
wanted to do more than the original BSD tcpdumping hacks. You can push a
socket filter onto any Linux socket. That also means if you want to write a
BSD bpf device clone you can use the socket filter code to do the filter part
and just need to write the device side
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