More radar data access related code: driver patch, userland app

[Adrian Chadd]

Hi all,

I've just updated the driver changes needed to extract radar (and
later, spectral scan) frames via radiotap. I've also uploaded some
code that creates a BPF interface, compiles a suitable filter to just
extract PHY errors, and do basic frame decoding.

It's all here: http://wiki.freebsd.org/dev/ath(4)/RadarFFT

I haven't yet documented the FFT format. If you have an AR9130 or
later NIC, longer radar pulses come with an FFT.

I'd really appreciate some help writing some visualisation tools. If I
start getting some open source visualisation tools written, I'll put
some more time into getting the FFT and spectral scan
code/documentation opened up.


thanks!



Adrian