linux-kernel - Re: Regression in 2.6.27-git from commit 43ac2ca3840f64

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Message-ID: <20081022180012.GA6089@bougret.hpl.hp.com>
Date:	Wed, 22 Oct 2008 11:00:12 -0700
From:	Jean Tourrilhes <jt@....hp.com>
To:	Johannes Berg <johannes@...solutions.net>
Cc:	Larry Finger <Larry.Finger@...inger.net>, Jouni Malinen <j@...fi>,
	Jouni Malinen <jouni.malinen@...eros.com>,
	wireless <linux-wireless@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	John Linville <linville@...driver.com>
Subject: Re: Regression in 2.6.27-git from commit 43ac2ca3840f64

On Wed, Oct 22, 2008 at 07:46:27PM +0200, Johannes Berg wrote:
> On Wed, 2008-10-22 at 10:37 -0700, Jean Tourrilhes wrote:
> 
> > 	If you want me to understand what it's about, you may want to
> > give me a bit more context.
> 
> Sorry. Basically, Larry is saying that due to a kernel change, iwlist
> will print out things like
>                     IE: Unknown: 0017465249545A21426F7820466F6E20574C414E2037313133
>                     IE: Unknown: 010482848B96
>                     IE: Unknown: 030106
>                     IE: Unknown: 2A0106
>                     IE: IEEE 802.11i/WPA2 Version 1
>                         Group Cipher : TKIP
>                         Pairwise Ciphers (1) : CCMP
>                         Authentication Suites (1) : PSK
>                     IE: Unknown: 32080C1218243048606C
>                     IE: WPA Version 1
>                         Group Cipher : TKIP
>                         Pairwise Ciphers (1) : TKIP
>                         Authentication Suites (1) : PSK
>                     IE: Unknown: DD0A0800280101000200FF0F
>                     IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
> 
> 
> where all the IE: Unknown lines are unexpected.

	Unexpected, but not broken. That's good.

> > 	Alternatively, just send me a patch for Wireless Tools, and
> > I'll put it in the next release. Wireless Tools is still maintained
> > and I still do releases, even if I don't put much cycles into it.
> 
> The problem is that we don't quite know what to do about them :)

	We are not supposed to "do" anything, but to show the
underlying data in a user friendly way. I can't believe that we could
not parse this data properly, we manage to parse other IEs
correctly. If you are debugging a problem with wpa_supplicant, or a
Access Point issue, what would *you* want to see there.

> johannes

	Have fun...

	Jean


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