From: Sven Eckelmann <sven@narfation.org>
To: Mohammed Shafi <shafi.wireless@gmail.com>
Cc: Simon Wunderlich <simon.wunderlich@s2003.tu-chemnitz.de>,
	linux-wireless@vger.kernel.org, ath9k-devel@lists.ath9k.org,
	openwrt-devel@lists.openwrt.org,
	Marek Lindner <lindner_marek@yahoo.de>,
	Gabor Juhos <juhosg@openwrt.org>,
	Adrian Chadd <adrian.chadd@gmail.com>
Subject: Re: AR9330 hornet board stops beaconing after a few days (0xdeadbeef)
Date: Mon, 03 Sep 2012 16:34:30 +0200
Message-ID: <2968585.KZWUHnqH8O@bentobox> (sfid-20120903_163439_045582_2C98D185)
In-Reply-To: <CAD2nsn2wGCsYV2NW9VSVnvmQhnEk0EXW1vn6eaTYg_4-1w8ecQ@mail.gmail.com>
References: <20120813165340.GA10044@pandem0nium> <20120902200102.GA28313@pandem0nium> <CAD2nsn2wGCsYV2NW9VSVnvmQhnEk0EXW1vn6eaTYg_4-1w8ecQ@mail.gmail.com>
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On Monday 03 September 2012 19:23:26 Mohammed Shafi wrote:
> > # dmesg
> > [...]
> > [900132.160000] ath: phy0: NF calibrated [ext] [chain 0] is -104
> > [900162.160000] ath: phy0: NF calibrated [ctl] [chain 0] is -104
> > [900162.160000] ath: phy0: NF calibrated [ext] [chain 0] is -104
> > [900192.160000] ath: phy0: NF calibrated [ctl] [chain 0] is -104
> > [900192.160000] ath: phy0: NF calibrated [ext] [chain 0] is -104
> > [900197.470000] ath: phy0: missed 1 consecutive beacons
> > [900197.560000] ath: phy0: resume beacon xmit after 1 misses
> > [900222.160000] ath: phy0: NF calibrated [ctl] [chain 0] is -104
> > [900222.160000] ath: phy0: NF calibrated [ext] [chain 0] is -104
> > [900252.160000] ath: phy0: NF calibrated [ctl] [chain 0] is -104
> > [900252.160000] ath: phy0: NF calibrated [ext] [chain 0] is -104
> > [900275.910000] ath: phy0: missed 1 consecutive beacons
> 
> seems we are getting beacon stuck, though its not sufficient for triggering
> chip reset (or) atleast start noise floor calibration. Is this is in a
> congested environment ? we can dump cycle counters . I think we need to
> have a WAR of chip reset if the cycle counters (busy is too high) inspite
> the MAC hang signature . let me try too to figure out that WAR is already
> available (or) we got to enable it.

The test environment is not really "congested". It is not in a city and you 
don't have many access points in range. Only 2/3 clients are using these two 
test access points. I don't know whether there are other things using the 
channel range also used by the access points.

Kind regards,
	Sven
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