Ethereal-dev: Re: [Ethereal-dev] [PATCH] updated 802.11 dissector

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From: Guy Harris <gharris@xxxxxxxxx>
Date: Tue, 18 Jun 2002 01:41:19 -0700
On Mon, Jun 17, 2002 at 04:15:43PM -0400, Solomon Peachy wrote:
> Version four of the patch is up at the usual place.  

Checked in, with some cleanups of the code to handle short frames, and
with the WEP ICV universally named an "ICV" rather than a "CRC" (e.g.,
changing the filterable field name).

BTW, is WEP encryption done *before* fragmentation or *after*
fragmentation?

I.e., if a frame is handed to an 802.11 interface, and the interface

	1) is using WEP

and

	2) chooses to fragment the packet

does it WEP-encrypt the payload and then fragment it, or does it
fragment the payload and then WEP-encrypt each fragment?  The current
code does WEP decryption after defragmentation, which works if it
WEP-encrypts the payload and then fragments it.