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Date: Mon, 14 Jun 2004 18:47:49 +0100
From: Bruce M Simpson <bms@spc.org>
To: Ed Maste <emaste@sandvine.com>
Message-ID: <20040614174749.GF14722@empiric.dek.spc.org>
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	'Sergey Lyubka' <devnull@uptsoft.com>, freebsd-hackers@freebsd.org
References: <FE045D4D9F7AED4CBFF1B3B813C8533701BD40C7@mail.sandvine.com>
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cc: freebsd-hackers@freebsd.org
cc: 'Sergey Lyubka' <devnull@uptsoft.com>
Subject: Re: memory mapped packet capturing - bpf replacement ?
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On Mon, Jun 14, 2004 at 08:38:57AM -0400, Ed Maste wrote:
> Hello Sergey.  I haven't looked at your code, but I'll provide 
> some comments, having implemented a mmaped ringbuffer BPF 
> replacement myself.

We've had some prior interest in this. Do you have patches? If so, I'd be
more than happy to look at them.

Linux has something similar, but when I looked at the mechanism involved,
I was loathe to adopt the same logic because the buffer(s) involved were
allocated from userland and then mapped accordingly; we generally can't
afford to take a page fault in that path, for mutex related reasons.

Regards,
BMS