Re: fedora 7 wpa_supplicant/ath0 booting problems

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Message: 15
Date: Tue, 19 Jun 2007 14:56:23 -0700
From: "Wolfgang S. Rupprecht"
Subject: Re: fedora 7 wpa_supplicant/ath0 booting problems
To: fedora-list@xxxxxxxxxx
Message-ID: <87r6o7ehh4.fsf@xxxxxxxxxxxxxxx>
Content-Type: text/plain; charset=us-ascii

"Mario Rossi" <mariofutire@xxxxxxxxxxxxxx> writes:
> I've found a different (and in my opinion) better way:
> 1) start wpa_supplicant service (for some reasons it starts AFTER the
> network, you have to change it). (this point is a bit tricky if
> multiple wireless interfaces are involved).
> 2) add something like WPA=yes to /etc/sysconfig/network-scripts/ifcfg-wlan0
> 3) change /etc/sysconfig/network-scripts/ifup-wireless to skip every
> settings via iwconfig since wpa_supplicant has already done the job
> (if WPA=yes)
> In that way wpa_supplicant is run only once.

In FC6 I used to start wpa_supplicant at timeslot #9 just before the
nework was started.  For some reason this stopped working in F7.

Perhaps the iwconfigs had less effect in FC6, either due to timing
reasons or something else was preventing them from working if the card
was active.  I'll try playing a bit with a simplified ifup-wireless.

I wonder if ifup-ethernet would work for wpa_supplicant wireless
interfaces .  (Can't test it now since I'm using the wireless to type

> In your setup, can you actually take the interface down and up again?
> It looks to me that, if you don't do 3) the 2nd time the interface
> does not go up anymore.

In my case if I even sneeze the wrong way wpa_supplicant gets lost and
loops endlessly trying to associate.  Stopping wpa_supplicant and
ifdown, ifup on the interface is the only way out of the loop.  So I
guess the short answer is "yes I have problems restarting the
network".  ;-)

So far I've understood that wpa_supplicant is responsible for setting
the key for the interface.
When I debug it, I just add "iwconfig" at the end of ifup-interface
(so it prints all the parameters of the wireless interface) and I can
tell if something went wrong.
In normal situation, the key has to be set, only the the dhcp can work.

wpa_supplicant runs in the background and makes sure the key is set
(i.e. after you bring the interface down).

Make sure you run wpa_supplicant with "-w".
I've got 2 cards (ipw2100 and a broadcom pcmcia), and iwconfig has
different impact on both, but I've seen that it is not actually
required, wpa_supplicant does everything.


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