BPF has grown rapidly. In the networking stack, a BPF program can do much more than a few years ago. It could be overwhelming to figure out which bpf hook should be used, what is available at a particular layer and why. This talk will go through some of the bpf hooks in the networking stack with use cases in Meta. The talk will also get to some common questions/confusions that the users have and how they could be addressed in the future.
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