Re: 802.11 + radio headers question...

[Mike Kershaw <dragorn () nerv-un net>]

On Tue, Apr 14, 2009 at 11:07:52AM -0400, Eddie Harari wrote:
> Thanks for the quick response.
>
> Is there an RFC for 802.11 radio headers ?
> all the cards give same headers ?

The IEEE standard & combined standards for 11b/g/a are now free (they're
linked off wikipedia or google should find them.)

All 802.11 layer headers are consistent across cards.

Different drivers return different (or no) per-packet custom headers
which contain layer1 radio data like antenna, signal, bitrate, etc, not
contained in the 802.11 layer.

I can think of wlan-ng prism2, prism2-avs, radiotap, and PPI off the top
of my head.  Rtap and PPI are variable-length headers.

-m

-- 
Mike Kershaw/Dragorn <dragorn () kismetwireless net>
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