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List:       kismet-wireless
Subject:    Re: [KISMET] Wishlist
From:       Stuffed Crust <pizza () shaftnet ! org>
Date:       2002-03-31 23:59:53
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On Sun, Mar 31, 2002 at 05:24:05PM -0500, Mike Kershaw wrote:
> Maybe the drivers have advanced to the point where it's useful, I'll look at
> it again.

Highly unlikely.  :)   The driver just reports what the card tells it.
 
> Usually SNR reporting goes out the window when it's in RFMon mode.  The
> prism2 drivers didn't reliably report this (most often filling it with all
> 0's).

Yeah, it's not too reliable.   The noise level seems to always be zero,
but the signal strength seems to be (somewhat) sane.

> This is true.  Some cards report snr in monitor mode, (cisco), most, however,
> do not (the world).  I'll see about merging it in for prism2, but the drivers 
> should be entering it in /proc/net/wireless if it's gatherable in rfmon mode.

As explained to me, the CommsQuality info that is used to populate
/proc/net/wireless is the signal strength with the associated AP.
And if there's no association, there's nothing to report.  So this is a
"feature", apparently.  
 
> > Kismet is also not doing any kind of packet type checking on the
> > incoming packets; this is actually fairly easy for some capture types
> > like wtap..
> 
> Eh?  Maybe we have different definitions of type checking?

It would only be relevant for wtap and raw PF_PACKET socket captures;
Just a check to make sure that the frame coming back is supposedly an
IEEE802.11[+prism] frame.

For example, with wtap, we should only pass up packets of the type
WTAP_ENCAP_IEEE_802_11 or WTAP_ENCAP_PRISM_HEADER.... It's just a sanity
check..

And since kismet doesn't use raw PF_PACKET captures, you can largely
ignore me.

 - Pizza
-- 
Solomon Peachy                                    pizzaATfucktheusers.org
I ain't broke, but I'm badly bent.                           ICQ# 1318344
Patience comes to those who wait.
    ...It's not "Beanbag Love", it's a "Transanimate Relationship"...

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