4965AGN loses connection on Custom wireless event

4965AGN loses connection on Custom wireless event

[Jan Willies]

Hello list,

I have a strange problem with an EAP-Network here. I can associate just 
fine, but approx 1 min after the _initial_ connection completed the 
network hangs. Though all the tools say I'm still connected (nm-applet, 
iwconfig) I can't ping anything. I have to re-new the connection with 
nm-applet and after that it works again (and longer!).

1. boot notebook and associate with wifi
2. wait 1 min -> hang
3. re-establish connection with nm-applet
4. after that it never hangs again (mostly)

You can find the log here: http://jan.willies.info/wpa_supplicant.log

Dan Williams says the interesting line is 1242720593.722277: "the driver 
sends an association event *after* it's completed association, which the 
supplicant interprets as a restart of the authentication process".

This is a Thinkpad X300 with Fedora 11 (iwlagn-1.3.27kds and 
wpa_supplicant-0.6.8)


regards,

   - jan

Re: 4965AGN loses connection on Custom wireless event

[Dan Williams]

On Wed, 2009-07-01 at 15:04 +0200, Jan Willies wrote:
> Hello list,
> 
> I have a strange problem with an EAP-Network here. I can associate just 
> fine, but approx 1 min after the _initial_ connection completed the 
> network hangs. Though all the tools say I'm still connected (nm-applet, 
> iwconfig) I can't ping anything. I have to re-new the connection with 
> nm-applet and after that it works again (and longer!).
> 
> 1. boot notebook and associate with wifi
> 2. wait 1 min -> hang
> 3. re-establish connection with nm-applet
> 4. after that it never hangs again (mostly)

1242720535.735207 - initial connection
1242720593.722277 - random assoc-info event
1242720593.744343 - WEXT assoc event for the AP you're already on
1242720593.745312 - supplicant decides to reauth with EAP
1242720603.745888 - supplicant-initiated reauth times out

So yeah, there's something going wrong here in the supplicant's handling
of a spurious association event sent from the driver.

Jouni, how should the supplicant handle a WEXT assoc event for the AP
that's already associated with?  That seems to be what's going on here;
the card is coming back from a scan and emitting an assoc event (not
sure why) and that's making the supplicant (wrongly IMHO) try to reauth
at the EAP level for some reason.

Dan

> You can find the log here: http://jan.willies.info/wpa_supplicant.log
> 
> Dan Williams says the interesting line is 1242720593.722277: "the driver 
> sends an association event *after* it's completed association, which the 
> supplicant interprets as a restart of the authentication process".
> 
> This is a Thinkpad X300 with Fedora 11 (iwlagn-1.3.27kds and 
> wpa_supplicant-0.6.8)
> 
> 
> regards,
> 
>    - jan
> 
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Re: 4965AGN loses connection on Custom wireless event

[Jan Willies]

Hi,

On 01.07.2009 16:29, Dan Williams wrote:
> Jouni, how should the supplicant handle a WEXT assoc event for the AP
> that's already associated with?  That seems to be what's going on here;
> the card is coming back from a scan and emitting an assoc event (not
> sure why) and that's making the supplicant (wrongly IMHO) try to reauth
> at the EAP level for some reason.

Did I miss the answer here? Is there any more information I can provide?


  - jan

Re: 4965AGN loses connection on Custom wireless event

[Dan Williams]

On Tue, 2009-07-07 at 15:45 +0200, Jan Willies wrote:
> Hi,
> 
> On 01.07.2009 16:29, Dan Williams wrote:
> > Jouni, how should the supplicant handle a WEXT assoc event for the AP
> > that's already associated with?  That seems to be what's going on here;
> > the card is coming back from a scan and emitting an assoc event (not
> > sure why) and that's making the supplicant (wrongly IMHO) try to reauth
> > at the EAP level for some reason.
> 
> Did I miss the answer here? Is there any more information I can provide?

Nope, not yet.  Jouni's traveling at the moment though so he might reply
when he gets back.

Dan