Subject: Re: tcpdump/libpcap and variable length link level headers
To: None <>
From: Ignatios Souvatzis <>
List: tech-net
Date: 10/07/1999 22:39:20
On Wed, Oct 06, 1999 at 10:15:01PM +0200, Ignatios Souvatzis wrote:
> I'm thinking about how to do libpcap matching for ARCnet.
> ...
> My unready thoughts

Version 2:

- teach tcpdump/libpcap to create code that
uses a "MEM" location which holds the nonll-offset everywhere.

- furthermore, depending on the interface, code that initializes this to
  a constant (for Ethernet etc.) or to query the packet and compute the offset
  (for ARCnet)

- hope that the BPF bytecode optimizer knows how to make it fast in the first

Does this sound better?