XO (88W8388) roaming issues

[Franco Miceli]

Great. Will apply the patch then.

Thanks.

BR,


2013/3/27 Dan Williams <dcbw at redhat.com>

> On Wed, 2013-03-27 at 12:21 -0300, Franco Miceli wrote:
> > Great news then.
> >
> > We will be deploying F18 builds which include wpa_supplicant 1.0.
>
> I think even with 1.0 and F18 you'll want the patch I attached.
> Actually, it's likely I'll just add the patch to the Fedora builds
> anyway, since the upstream defaults here are pretty clearly wrong for
> most drivers.
>
> Dan
>
> > At this instance we will test the roaming feature and see if it improves.
> >
> > Thanks for the info. Will report back the results.
> >
> > BR,
> >
> >
> >
> >
> > 2013/3/27 Dan Williams <dcbw at redhat.com>
> >
> > > On Wed, 2013-03-27 at 09:37 -0300, Franco Miceli wrote:
> > > > That could be the case, since we are using wpa
> > > > _supplicant-0.6.8-10.fc14.i686.
> > > >
> > > > But from another mal exchange with you I got the impression that
> > > wpa_supplicant
> > > > did not take part in roaming on the XO laptop (Libertas-Thick
> Firmware).
> > >
> > > I looked again at the libertas kernel driver and I believe that the
> > > supplicant does actually control the roaming with this firmware.  Some
> > > older hardware (orinioco, airo) does do all the roaming in firmware,
> but
> > > the libertas lets the supplicant control that.  Most of the rest of it
> > > is thick-firmware style though :)
> > >
> > > > Can I expect changes from using wpa_supplicant with version higher
> than
> > > 0.7
> > > > on the XO laptop?
> > >
> > > You could try to apply the following patch to the 0.7 supplicant, or
> you
> > > could try 1.0 or later, but even with later versions, you may need a
> > > patch like the following.
> > >
> > > Dan
> > >
> > > ---
> > > diff -up wpa_supplicant-0.7.3/wpa_supplicant/events.c.foo
> > > wpa_supplicant-0.7.3/wpa_supplicant/events.c
> > > --- wpa_supplicant-0.7.3/wpa_supplicant/events.c.foo    2012-06-12
> > > 12:03:36.172962193 -0500
> > > +++ wpa_supplicant-0.7.3/wpa_supplicant/events.c        2012-06-12
> > > 12:03:51.388771973 -0500
> > > @@ -871,16 +871,14 @@ static int wpa_supplicant_need_to_roam(s
> > >
> > >         min_diff = 2;
> > >         if (current_bss->level < 0) {
> > > -               if (current_bss->level < -85)
> > > -                       min_diff = 1;
> > > -               else if (current_bss->level < -80)
> > > -                       min_diff = 2;
> > > -               else if (current_bss->level < -75)
> > > -                       min_diff = 3;
> > > -               else if (current_bss->level < -70)
> > > +               if (current_bss->level < -75)
> > >                         min_diff = 4;
> > > +               else if (current_bss->level < -70)
> > > +                       min_diff = 6;
> > > +               else if (current_bss->level < -65)
> > > +                       min_diff = 8;
> > >                 else
> > > -                       min_diff = 5;
> > > +                       min_diff = 15;
> > >         }
> > >         if (abs(current_bss->level - selected->level) < min_diff) {
> > >                 wpa_printf(MSG_DEBUG, "Skip roam - too small
> difference in
> > > "
> > >
> > >
> > >
> >
> >
>
>
>


-- 
Ing. Franco Miceli
CITS - Plan Ceibal - Investigación & Desarrollo
Av. Italia 6201 - Montevideo, Uruguay
CP: 11500
Tel: (598 2) 601 5773 int.: 2227
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