mac80211: reassociate in STA mode after AP was power-cycled

mac80211: reassociate in STA mode after AP was power-cycled

[Joerg Albert]

I had a ar9170usb device in STA mode associated to an AP and power-cycled the AP - slowly enough to get the
STA disassociated. 

I wonder why the STA doesn't re-associate again to the AP once it's up again. Waited for 5+ minutes.

I see the AP in the output of "iwlist wlan1 scan" and after "ifconfig wlan1 down; ifconfig wlan1 up"
the STA associates quickly.

wireless-testing from today, v2.6.31-rc6-31653-g0dfdb6f.

Some lines from syslog, between "ifconfig wlan1 up" and powering off the AP:

Aug 21 22:55:33 nc10 kernel: [ 1854.824443] wlan1: direct probe to AP 00:30:f1:d5:2e:69 (try 1)
Aug 21 22:55:33 nc10 kernel: [ 1854.826914] wlan1 direct probe responded
Aug 21 22:55:33 nc10 kernel: [ 1854.826930] wlan1: authenticate with AP 00:30:f1:d5:2e:69 (try 1)
Aug 21 22:55:33 nc10 kernel: [ 1854.830003] wlan1: authenticated
Aug 21 22:55:33 nc10 kernel: [ 1854.837585] wlan1: associate with AP 00:30:f1:d5:2e:69 (try 1)
Aug 21 22:55:33 nc10 kernel: [ 1854.839656] wlan1: RX AssocResp from 00:30:f1:d5:2e:69 (capab=0x421 status=0 aid=5)
Aug 21 22:55:33 nc10 kernel: [ 1854.839670] wlan1: associated
Aug 21 22:55:33 nc10 kernel: [ 1854.847296] ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
Aug 21 22:55:45 nc10 kernel: [ 1867.500169] No probe response from AP 00:30:f1:d5:2e:69 after 500ms, disconnecting.

Regards,
Jörg.

Re: mac80211: reassociate in STA mode after AP was power-cycled

[Johannes Berg]

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On Fri, 2009-08-21 at 23:11 +0200, Joerg Albert wrote:
> I had a ar9170usb device in STA mode associated to an AP and power-cycled the AP - slowly enough to get the
> STA disassociated. 
> 
> I wonder why the STA doesn't re-associate again to the AP once it's up again. Waited for 5+ minutes.

It told userspace that it disconnected, and as such it can't do anything
any more. Just run wpa_supplicant.

johannes

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Re: mac80211: reassociate in STA mode after AP was power-cycled

[Joerg Albert]

On 08/21/2009 11:23 PM, Johannes Berg wrote:
> On Fri, 2009-08-21 at 23:11 +0200, Joerg Albert wrote:
>> I had a ar9170usb device in STA mode associated to an AP and power-cycled the AP - slowly enough to get the
>> STA disassociated. 
>>
>> I wonder why the STA doesn't re-associate again to the AP once it's up again. Waited for 5+ minutes.
> 
> It told userspace that it disconnected, and as such it can't do anything
> any more. Just run wpa_supplicant.

Thanks, that helped. I wasn't aware that wpa_supplicant controls non-wpa connections, too.

Jörg.