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From: Michael Buesch <mb@bu3sch.de>
To: Jaswinder Singh Rajput <jaswinder@kernel.org>
Cc: Sujith <Sujith.Manoharan@atheros.com>,
	wireless <linux-wireless@vger.kernel.org>,
	David Miller <davem@davemloft.net>,
	LKML <linux-kernel@vger.kernel.org>
Subject: Re: ath9k becon loss messages
Date: Sun, 5 Apr 2009 11:29:38 +0200	[thread overview]
Message-ID: <200904051129.38904.mb@bu3sch.de> (raw)
In-Reply-To: <1238923439.4120.9.camel@localhost.localdomain>

On Sunday 05 April 2009 11:23:59 Jaswinder Singh Rajput wrote:
> With latest linus tree I am getting, .config file attached:
> 
> [   22.895051] r8169: eth0: link down
> [   22.897564] ADDRCONF(NETDEV_UP): eth0: link is not ready
> [   22.928047] ADDRCONF(NETDEV_UP): wlan0: link is not ready
> [   22.982292] libvirtd used greatest stack depth: 4200 bytes left
> [   63.709879] wlan0: authenticate with AP 00:11:95:9e:df:f6
> [   63.712096] wlan0: authenticated
> [   63.712127] wlan0: associate with AP 00:11:95:9e:df:f6
> [   63.726831] wlan0: RX AssocResp from 00:11:95:9e:df:f6 (capab=0x471 status=0 aid=1)
> [   63.726855] wlan0: associated
> [   63.730093] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
> [   74.296087] wlan0: no IPv6 routers present
> [   79.349044] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request
> [  119.358200] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request
> [  179.354292] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request
> [  259.366044] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request
> [  359.348292] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request
> [  361.953459] packagekitd used greatest stack depth: 4160 bytes left
> [  478.824258] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request
> [  598.813343] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request
> [  718.817292] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request
> [  838.824567] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request
> [  958.815402] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request
> [ 1078.848434] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request
> [ 1198.822913] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request
> [ 1318.824931] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request
> [ 1438.814157] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request
> [ 1558.827336] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request
> [ 1678.823011] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request
> [ 1798.830589] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request
> [ 1918.828044] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request
> [ 2038.827224] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request
> [ 2116.517152] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request
> [ 2158.840243] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request
> [ 2278.827427] wlan0: beacon loss from AP 00:11:95:9e:df:f6 - sending probe request


I think this message should only show if CONFIG_MAC80211_VERBOSE_DEBUG is set.
It's kind of expected that we lose a beacon once in a while, so we shouldn't print
verbose messages to the kernel log (even if they are KERN_DEBUG).

And besides that, I think one can easily remotely trigger this message and flood the logs.
So it should probably _also_ be ratelimited.

-- 
Greetings, Michael.

  reply	other threads:[~2009-04-05  9:31 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-04-05  9:23 ath9k becon loss messages Jaswinder Singh Rajput
2009-04-05  9:29 ` Michael Buesch [this message]
2009-04-05  9:36   ` Michael Buesch
2009-04-05 10:03     ` Kalle Valo
2009-04-05 11:00     ` Jaswinder Singh Rajput
2009-04-05  9:52   ` Jaswinder Singh Rajput
2009-04-05 10:13     ` Kalle Valo
2009-04-06  7:14       ` Helmut Schaa
2009-04-06  8:17         ` Kalle Valo
2009-04-06  8:56           ` Helmut Schaa
2009-04-06  9:04             ` Kalle Valo
2009-04-06 10:17         ` Michael Buesch
2009-04-06 10:23           ` Kalle Valo
2009-04-06 10:51             ` Helmut Schaa
2009-04-06 11:05               ` Kalle Valo
2009-04-06 11:05                 ` Kalle Valo
2009-04-06 15:18                 ` Kalle Valo
2009-04-06 18:00                   ` John W. Linville
2009-04-07  5:54                     ` Kalle Valo
2009-04-07 13:53                       ` John W. Linville
2009-04-07 15:19                         ` Kalle Valo

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