linux-kernel - Re: iwlagn is getting very shaky

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Date:	Thu, 24 Nov 2011 08:47:39 +0200
From:	Emmanuel Grumbach <egrumbach@...il.com>
To:	Norbert Preining <preining@...ic.at>
Cc:	"Guy, Wey-Yi" <wey-yi.w.guy@...el.com>,
	David Rientjes <rientjes@...gle.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"ipw3945-devel@...ts.sourceforge.net" 
	<ipw3945-devel@...ts.sourceforge.net>,
	"ilw@...ux.intel.com" <ilw@...ux.intel.com>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
	Pekka Enberg <penberg@...helsinki.fi>,
	Dave Jones <davej@...hat.com>
Subject: Re: iwlagn is getting very shaky

On Wed, Nov 23, 2011 at 03:55, Norbert Preining <preining@...ic.at> wrote:
> On Di, 22 Nov 2011, Emmanuel Grumbach wrote:
>> This is completely broken. This log looks really bad. AGG are enabled
>> and disabled right away, messing the queues completely.
>
> I can easily reproduce that here, today after reboot I saw something more:
> [   82.894328] iwlwifi 0000:06:00.0: U iwl_trans_tx_queue_set_status Deactivate
> AC/CMD Queue 11 on FIFO 0
> [   83.072243] iwlwifi 0000:06:00.0: U iwl_trans_pcie_tx_agg_alloc HW queue is NOT empty: 85 packets in HW queue
> [  288.039768] iwlwifi 0000:06:00.0: U iwl_trans_tx_queue_set_status Deactivate AC/CMD Queue 11 on FIFO 0
> [  288.039884] wlan0: deauthenticating from 00:0a:79:eb:56:10 by local choice (reason=3)
> [  288.040218] iwlwifi 0000:06:00.0: I iwl_stop_queue Stop hwq 2 ac 2 stop count 1. Queue is full
> [  288.052312] iwlwifi 0000:06:00.0: I iwl_wake_queue Wake hwq 2 ac 2. Packets reclaimed
> [  288.052542] iwlwifi 0000:06:00.0: I iwl_stop_queue Stop hwq 2 ac 2 stop count 1. Queue is full
> [  288.064074] iwlwifi 0000:06:00.0: I iwl_wake_queue Wake hwq 2 ac 2. Packets reclaimed
> [  288.064301] iwlwifi 0000:06:00.0: I iwl_stop_queue Stop hwq 2 ac 2 stop count 1. Queue is full
> [  288.074618] iwlwifi 0000:06:00.0: I iwl_wake_queue Wake hwq 2 ac 2. Packets reclaimed
>
>> Will send another patch later.
>

Please apply the patch attached on top of the one I previously sent.
Let me know I you have trouble with patch.
Please also enable the MAC80211_HT_DEBUG compilation flag
I also the (HT + TXQUEUES) debug flag of the driver: modprobe iwlwifi
debug=0x84000000

Thanks
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