Re: minor WPA problem on a Thinkpad R40

Brooks Davis wrote:
> On Fri, Jul 01, 2005 at 04:48:26PM -0700, Bakul Shah wrote:
> 
>>After suspend/resume the old wpa_supplicant does not die
>>and ath0 does not come up.  Manually running
>>    /etc/rc.d/netif stop ath0
>>or
>>    /etc/rc.d/netif start ath0
>>does the right thing.  I am running yesterday's kernel.
>>rc.conf contains
>>
>>    ifconfig_ath0="WPA DHCP"
>>
>>Not sure if I am doing something wrong or if this area still
>>needs work.  As I understand it, wpa_supplicant should die
>>when an interface goes down just like dhclient should.
> 
> 
> Hmm, this isn't something I've been able to test.  One shot in the dark
> would be adding -w to the wpa_supplicant command line in
> /etc/rc.d/wpa_supplicant.  I know wpa_supplicant deals badly with
> yanking and reinserting a nic under normal circumstances so I'm not too
> suprised it's having trouble with suspend/resume.
> 
> 
>>Another curious behavior is that after a manual
>>    ifconfig ath0 down
>>the interface does not stay down.
> 
> 
> I suspect wpa_supplicant is bringing it back up.  I'm not sure what the
> answer is there.

IMO wpa_supplicant should exit when the interface goes down/away but it 
does not.  I sent mail to Jouni about this but he hasn't responded yet. 
I was going to check if there was a way to make it work this way.  Not 
sure why it works this way except to avoid recalculating various crypto 
state or perhaps to avoid linux hotplug issues.

	Sam