linux-kernel - Re: iwlagn is getting very shaky

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Date:	Tue, 22 Nov 2011 16:27:30 +0900
From:	Norbert Preining <preining@...ic.at>
To:	Emmanuel Grumbach <egrumbach@...il.com>
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>
Subject: Re: iwlagn is getting very shaky

HI Emmanuel,

On Di, 22 Nov 2011, Emmanuel Grumbach wrote:
> Please apply the patch attached. It has been submitted upstream but
> hasn't been merged in the tree you use apparently.

Does not apply against current git, as there is no iwl-mac80211.c:
[/usr/src/git-kernel/linux.git] patch -p1 --dry-run < ~/QUEUE_DEBUG.patch 
patching file drivers/net/wireless/iwlwifi/iwl-agn-rx.c
patching file drivers/net/wireless/iwlwifi/iwl-agn-rxon.c
Hunk #1 succeeded at 116 (offset -1 lines).
Hunk #2 succeeded at 840 (offset -4 lines).
patching file drivers/net/wireless/iwlwifi/iwl-agn-tx.c
Hunk #1 succeeded at 800 (offset -13 lines).
patching file drivers/net/wireless/iwlwifi/iwl-debug.h
Hunk #1 succeeded at 151 (offset -15 lines).
Hunk #2 succeeded at 188 (offset -15 lines).
can't find file to patch at input line 78
Perhaps you used the wrong -p or --strip option?
The text leading up to this was:
--------------------------
|diff --git a/drivers/net/wireless/iwlwifi/iwl-mac80211.c b/drivers/net/wireless/iwlwifi/iwl-mac80211.c
|index 073e827..05b1f0d 100644
|--- a/drivers/net/wireless/iwlwifi/iwl-mac80211.c
|+++ b/drivers/net/wireless/iwlwifi/iwl-mac80211.c
--------------------------
File to patch: 


> Then please run with set the TXQUEUES debug flag: 0x8000000.

Is this a load options to iwlwifi module (debug=0x..... at module load time?)
or has to be set in /sys/kernel/debug/ieee80211/phy?/iwlwifi/debug/*
somewhere?

> This will give us a better understanding regarding what happens with
> the queues and how they are mapped.

You have seen my remark on RX packages and RX bytes?

> Do you use any SoftAP / P2P feature ? HW queues can be stalled

No. Fixed AP with fixed IP and no special adaptions.

> sometimes when using such configuration. Can it also be that the AP
> that we can't work with has any kind of power save feature (I know
> that this one is hard to answer though :-)) ?

There is AFAIR something that is set after 3hours or so ... not of
importance, but I will check the settings. But then, it was always
working before ;-)

> Forgot to reply on the WARN_ON you saw. Yes I know about it. We seem

Ok, fine. Thus I can forget about it. THanks.

Best wishes

Norbert
------------------------------------------------------------------------
Norbert Preining            preining@...ist.ac.jp, logic.at, debian.org}
JAIST, Japan                                 TeX Live & Debian Developer
DSA: 0x09C5B094   fp: 14DF 2E6C 0307 BE6D AD76  A9C0 D2BF 4AA3 09C5 B094
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