[pkg-wpa-devel] Bug#542917: Bug#542917: iwl3945: iwl3945 fickly connect

[Kel Modderman]

On Wednesday 02 September 2009 22:16:04 Ben Hutchings wrote:
> On Wed, 2009-09-02 at 19:09 +1000, Kel Modderman wrote:
> > On Wednesday 02 September 2009 10:09:20 Ben Hutchings wrote:
> > > On Tue, 2009-09-01 at 19:36 +0200, Daniel Huhardeaux wrote:
> > > > Ben Hutchings a écrit :
> > > > > On Sat, 2009-08-22 at 11:07 +0200, Daniel wrote:
> > > > >> Package: linux-image-2.6.30-1-amd64
> > > > >> Version: 2.6.30-6
> > > > >> Severity: important
> > > > >> File: iwl3945
> > > > >>
> > > > >>
> > > > >> 0b:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02)
> > > > >>
> > > > >> Having the above wireless device, I always have problems with connection to AP using wpa_supplicant.
> > > > > 
> > > > > When you say "always", do you mean you have seen this problem with
> > > > > earlier kernel versions as well?
> > > > 
> > > > Yes. See
> > > > 
> > > > http://lists.debian.org/debian-kernel/2009/03/msg00123.html
> > > > 
> > > > and Bug #12880 on bugzilla.kernel.org
> > > 
> > > That's a different bug, reported as <http://bugs.debian.org/518358>,
> > > which you said was fixed in version 2.6.29-2.
> > > 
> > > I'm talking about the bug reported as <http://bugs.debian.org/542917>.
> > > 
> > > > > How are you invoking wpa_supplicant?
> > > > Started from /etc/netwok/interfaces and/or wpa_gui
> > > > 
> > > >    Do you use a front-end such as
> > > > > network-manager or wicd?
> > > > No
> > > 
> > > I've looked at where the message "wlan0: deauthenticating by local
> > > choice (reason=3)" is generated, and it appears to mean that something
> > > is setting the interface down.  I have been using the same WLAN device
> > > and the same kernel version as you with no such problems.  So I think
> > > this is an issue with wpa_supplicant or wpa_gui, or the way you have
> > > configured them.  I will reassign the bug accordingly.
> > 
> > I'd say the deauth message is appearing and _then_ the interface is taken down
> > in reaction.
> 
> The deauth message comes from:
> 
>         int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason)
>         {
>         	printk(KERN_DEBUG "%s: deauthenticating by local choice (reason=%d)\n",
>         	       sdata->dev->name, reason);
>         
> which is called from the close/down function for mac80211 interfaces:
>         
>         static int ieee80211_stop(struct net_device *dev)
>         {
>         ...
>         	if (sdata->vif.type == NL80211_IFTYPE_STATION) {
>         		if (sdata->u.mgd.state != IEEE80211_STA_MLME_DISABLED)
>         			ieee80211_sta_deauthenticate(sdata,
>         				WLAN_REASON_DEAUTH_LEAVING);
>         	}
> 
> WLAN_REASON_DEAUTH_LEAVING is defined as 3.
> 
> It can also be called in response to a command sent over netlink.
> 
> > wpa_supplicant simply reacts to events the kernel driver gives it.
> > wpa_supplicant doesn't look suspicious here at all given this information.
> 
> What about wpa_gui?

wpa_gui just receives messages from the supplicant via unix socket. It only
sends messages to query status every now and then by itself, unless user clicks
the Disconnect button or disables the network configuration of connected
ssid with an input device.

Thanks, Kel.