Wireshark-users: Re: [Wireshark-users] [wireshark-user] GUI and radiotap.datarate
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From: Stephen Fisher <steve@xxxxxxxxxxxxxxxxxx>
Date: Thu, 16 Jul 2009 00:06:51 -0600
On Wed, Jul 15, 2009 at 05:07:56PM +0200, iodavide@xxxxxxxxx wrote:

> I'm using Version 1.2.0 (SVN Rev 28753)
> From "preference --> column" menu 

> I've selected to display a custom column with parameter 
> "radiotap.datarate" but the displayed column shows values exactly 
> double than value shown in "packet details" pane inside "Radiotap 
> Header".

> For example if "Datarate" value shown in the "packet details" pane 
> inside "Radiotap Header" is 3.0Mb/s I can see 6 in the column
> 
> I don't know which value is reliable!

The value in the packet details pane is probably the accurate one.  I 
see in epan/dissectors/packet-radiotap.c that the call for adding the 
datarate to the protocol details pane divides the value rate by 2.  The 
custom column code is probably confused by this.  Could you open a bug 
report at https://bugs.wireshark.org to describe the problem you're 
seeing so we don't lose track of it?  Thanks!


Steve