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Date: Fri, 4 Mar 2005 11:07:34 -0500
From: Aziz KEZZOU <opensource.enthousiat@gmail.com>
To: freebsd-net@freebsd.org, hackers@freebsd.org
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Subject: generic network protocols parser ?
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Reply-To: Aziz KEZZOU <opensource.enthousiat@gmail.com>
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Hi all,
I am wondering if any one knows  about a generic parser which takes a
packet (mbuf) of a certain protocol (e.g RSVP ) as input and generates
some data structre representing the packet ?

I've been searching for a while and found that ethereal and tcpdump
for example use specific data structres and functions to dissect each
protocol packets. Is this the only approach possible ?

My supervisor suggested using a TLV (Type/Length/Value) approach
instead. Any opinions about that?

If no such a parser exists is there any practical reason why ?

Thanks,
Aziz