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List:       freebsd-net
Subject:    Re: kern/131781: [ndis] ndis keeps dropping the link
From:       Adam K Kirchhoff <adamk () voicenet ! com>
Date:       2009-02-20 12:39:02
Message-ID: 20090220073902.193c929d () voicenet ! com
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On Thu, 19 Feb 2009 22:38:16 +0100
"Paul B. Mahol" <onemda@gmail.com> wrote:

> On 2/19/09, Adam K Kirchhoff <adamk@voicenet.com> wrote:
> > On Thu, 19 Feb 2009 05:50:35 -0500
> > Adam K Kirchhoff <adamk@voicenet.com> wrote:
> >
> >> On Wed, 18 Feb 2009 19:48:10 -0500
> >> Adam K Kirchhoff <adamk@voicenet.com> wrote:
> >>
> >> > On Thu, 19 Feb 2009 01:10:08 +0100
> >> > "Paul B. Mahol" <onemda@gmail.com> wrote:
> >> >
> >> > > On 2/18/09, Adam K Kirchhoff <adamk@voicenet.com> wrote:
> >> > > > --- if_ndis.c	2009-01-31 00:22:11.000000000 -0500
> >> > > > +++ if_ndis.c.orig	2009-02-18 14:03:30.000000000 -0500
> >> > > > @@ -2459,6 +2459,11 @@
> >> > > >  	bzero((char *)&config, len);
> >> > > >  	config.nc_length = len;
> >> > > >  	config.nc_fhconfig.ncf_length = sizeof(ndis_80211_config_fh);
> >> > > > +
> >> > > > +	 device_printf(sc->ndis_dev, "couldn't change "
> >> > > > +           "Testing config.nc_dsconfig: %u \n",
> >> > > > +           config.nc_dsconfig);
> >> > > > +	
> >> > > >  	rval = ndis_get_info(sc, OID_802_11_CONFIGURATION, &config, &len);
> >> > >
> >> > > printf should be bellow ndis_get_info() and above ndis_set_info().
> >> >
> >> > Alright, I've moved the printf down a few lines and recompiled.
> >> >
> >> > > Does same problem happens when not using WPA eg. wpa_supplicant?
> >> >
> >> > It's actually been running just fine since I got home.  I'm still using
> >> > wpa_supplicant, but with WEP instead of WPA.  This has been about four
> >> > hours.  Not much network traffic, but certainly more than what causes
> >> > the problem at work.
> >> >
> >> > I'm going to let it continue to run through the night.  I have a cron
> >> > job setup to transfer several 800 meg files to this laptop via scp, so
> >> > it'll be interesting to see if that works over this driver.
> >> >
> >> > Tomorrow morning, when I get into work, I'll grab the debug output
> >> > again, this time with the printf (hopefully) in the correct place.
> >>
> >> Looks like config.nc_dsconfig is 2462000
> >>
> >> The wireless connection stayed up all night, even while transferring
> >> over 2 gigs of data via scp.  The problem appears to be specific to
> >> this AP using WPA.  I can try WPA on my home network in about 10 hours
> >> to see if the same happens there.
> >
> > When I switched my home network to use WPA I started to have the same
> > problems as with the WPA network at work.  config.nc_dsconfig still
> > reads 246200.
> 
> Enable wpa_supplicant debugging and try find something interesting.
> I still cant understant why enabling debug.ndis hides problem.

Well, one mystery hopefully solved.  It looks like it has nothing to do
with enabling debug.ndis.  Instead, it seems related to the fact that
it connects the first time I bring up the interface, whether debug.ndis
is enabled or not.  

Of course, all my attempts at running wpa_supplicant directly from a
terminal, with debugging enabled, has resulted in a working connection.

I'll have to do more testing to see if I can find some consistency in
this problem.

Adam

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