[ath9k-devel] Going Deaf in adhoc mode

All, Would appreciate any pointers on where to look.    Hardware is AR9280
in Ubiquiti devices.  This is a mesh-olsr network on top of adhoc with
stations out to 20km.  It occurs on 10mhz and 5mhz channel widths (and
probably 20mhz too).

Here's the sequence when going deaf:

1) ANI ofdm level floats between 7 to 9 with error rates pushing up to
5000/sec.
2) missed beacons eventually leading to "beacon is officially stuck"--we
expect some interference, lots of adhoc station beacons (~20 stations *
10/sec), and lot's of OLSR broadcasts (3/second), and sometimes in 5mhz
channel.
3) ANI stops, then Starts, and most of the time goes back to step #1,  but
occasionally it continues here:
4) Error rates suddenly 200/sec or less.  Thus, OFDM level steps straight
down to and floats between 0 and 1.   Some of the weaker signal neighbor
stations no longer connected.
5) The environment appears  pristine never to trigger any calibrations on
its own.  Manually triggering  calibrations, e.g. adjacent channel scan and
back,  kicks it back to hearing everything.

So what possible setting isn't getting reset everytime with the ANI
stop/start that leaves it deaf?  It's like the noise floor suddenly raised
above most of all the signals, including many we really care about.  Would
appreciate advice on where to focus effort?   This might be a desired
feature if locking onto an AP, but with adhoc, we want to still communicate
with both the strong and weak neighbors.

Regards,
Joe Ayers AE6XE
http://www.aredn.org
http://www.ocmesh.org
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