linux-kernel - Re: iwl4965 oops in 2.6.26-rc5 x86

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Date:	Fri, 06 Jun 2008 12:04:59 -0400
From:	Dan Williams <dcbw@...hat.com>
To:	Thomas Backlund <tmb@...driva.org>
Cc:	Tomas Winkler <tomasw@...il.com>, Ian Schram <ischram@...enet.be>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>
Subject: Re: iwl4965 oops in 2.6.26-rc5 x86_64

On Fri, 2008-06-06 at 18:57 +0300, Thomas Backlund wrote:
> Dan Williams skrev:
> > On Fri, 2008-06-06 at 18:12 +0300, Tomas Winkler wrote:
> >> On Fri, Jun 6, 2008 at 5:51 PM, Thomas Backlund <tmb@...driva.org> wrote:
> >>> Tomas Winkler skrev:
> >>>> On Fri, Jun 6, 2008 at 3:33 PM, Thomas Backlund <tmb@...driva.org> wrote:
> >>>>> Thomas Backlund skrev:
> >>>>>> Tomas Winkler skrev:
> >>>>>>> On Fri, Jun 6, 2008 at 3:44 AM, Ian Schram <ischram@...enet.be> wrote:
> >>>>>>>> Isn't this the Oops Joonwoo Park wanted to patch with
> >>>>>>>>
> >>>>>>>> "[PATCH] iwlwifi: fix oops on wep key insertion" 27/5/2008
> >>>>>>>>
> >>>>>>>> invalid length of webkey that would/should be handled in mac80211?
> >>>>>>>>
> >>>>>>>> ian
> >>>>>>> Yes, it looks like.
> >>>>>> Ummm, what has a wep key to do with me trying to access a WPA2-Personal
> >>>>>> encrypted net ?
> >>>> Not sure yet, but mac is trying to assign default/static wep key.
> >>>>
> >>>> :iwlcore:iwl_send_static_wepkey_cmd+0xcb/0xd5
> >>>> :iwlcore:iwl_set_default_wep_key+0xa2/0xbc
> >>>>
> >>>> Try to set the encryption explicitly
> >>>> network={
> >>>>    psk="*************************"
> >>>>    scan_ssid=1
> >>>>    ssid="dlink"
> >>>>    pairwise=CCMP
> >>>>   group=CCMP
> >>>>  }
> >>>>
> >>>>
> >>> That didn't help at all...
> >>>
> >>> What's more it prevented the wifi to work on 2.6.24.7 so I had to remove the
> >>> lines again...
> >>>
> >> So what's your AP configuration TKIP?
> > 
> > Yeah, the supplicant log he posted clearly shows that the GTK is TKIP.
> > 
> > > 1212763152.516781: wpa_driver_wext_set_key: alg=2 key_idx=1 set_tx=0 seq_len=6 key_len=32
> >> 1212763152.516790: WPA: Key negotiation completed with 00:xx:xx:xx:xx:xx [PTK=CCMP GTK=TKIP]
> > 
> 
> The AP is actually set for TKIP+AES
> 
> BTW, is that better or worse than a clean AES ?
> I'm reading up on it, but I get a lot of conflicting info...

It's less secure than straight AES.

WEP < TKIP < AES/CCMP

Dan

> > Dan
> > 
> >> Second try also with sw decryption:
> >>
> >> in /etc/modprobe.conf
> >> options iwl4965 swcrypto=1
> >>
> >>
> >> Tomas
> >> --
> >> To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
> >> the body of a message to majordomo@...r.kernel.org
> >> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> > 
> 
> Thomas

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