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From: David Miller <davem@davemloft.net>
Subject: Re: multi bpf filter will impact performance?
Date: Wed, 01 Dec 2010 10:24:02 -0800 (PST)
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From: David Miller <davem@davemloft.net>
Date: Wed, 01 Dec 2010 10:18:09 -0800 (PST)

> If people work on the BPF optimizer and BPF JITs in parallel, we'll have
> both ready at the same time.  win++

BTW, the JIT is non-trivial work for us because of non-linear SKBs.
We'd need some kind of helper stub or similar, with a straight line
fast path for the linear case.