Re: wlan can't discover known networks after relocating

So roaming in ifconfig/net80211 is what's set to manual.

wpa_supplicant right now does RSSI threshold based roaming. All of the
roaming and network preferences when wpa_supplicant is running is done in
wpa_supplicant. That's where you have to look. Ideally wpa_supplicant would
be triggering bgscan too periodically rather than only when the RSSI is low.



-adrian


On Thu, 19 Sep 2019 at 15:04, Cy Schubert <cy.schubert_at_gmail.com> wrote:

> On September 19, 2019 8:20:07 AM PDT, Adrian Chadd <adrian.chadd_at_gmail.com>
> wrote:
> >Roaming is done in wpa_supplicant when it's running.That's where the
> >smarts
> >need to be. :(
> >
> >
> >
> >-adrian
> >
> >
> >On Thu, 19 Sep 2019 at 05:44, Bjoern A. Zeeb
> ><bzeeb-lists_at_lists.zabbadoz.net>
> >wrote:
> >
> >> On 19 Sep 2019, at 12:28, Tom Jones wrote:
> >>
> >> Hi,
> >>
> >> freebsd-wireless might be a better list for all this ..
> >>
> >>
> >> > On Tue, Sep 17, 2019 at 04:36:28PM +0000, Poul-Henning Kamp wrote:
> >> >> --------
> >> >> In message <707bcd3f-fa6b-82eb-fa8f-09c4b800f477_at_FreeBSD.org>,
> >> >> Johannes Lundber
> >> >> g writes:
> >> >>
> >> >>> For a long time now I have had this problem with iwm and wlan0.
> >> >>> Whenever
> >> >>> I move between work and home it won't reconnect automatically and
> >I
> >> >>> have
> >> >>> to do wlan0 scan manually for it to pick up the different
> >network.
> >> >>
> >> >> I suffer from the dreaded "reason=0" when I move inside my house:
> >> >>
> >> >>      > scan
> >> >>      OK
> >> >>      <3>CTRL-EVENT-SCAN-RESULTS
> >> >>      <3>Trying to associate with 6c:3b:6b:3d:a2:e9
> >(SSID='Palombia'
> >> >> freq=2452 MHz)
> >> >>      <3>CTRL-EVENT-DISCONNECTED bssid=6c:3b:6b:3d:a2:e9 reason=0
> >> >>      <3>CTRL-EVENT-SCAN-RESULTS
> >> >>      <3>Trying to associate with 6c:3b:6b:ab:ce:d4
> >(SSID='Palombia'
> >> >> freq=2412 MHz)
> >> >>      <3>Associated with 6c:3b:6b:ab:ce:d4
> >> >>
> >> >> a2:e9 is the loudest AP here in my office, but my I have been in
> >the
> >> >> other end of the house iwn consistently fails to associate with it
> >> >> and
> >> >> and keeps picking the weaker AP in the far end.
> >> >>
> >> >> Eventually (hours!) it disconnects from the weaker ap, also with
> >> >> "reason=0" and gets it right:
> >> >>
> >> >>      <3>WPA: Group rekeying completed with 6c:3b:6b:ab:ce:d4
> >[GTK=CCMP]
> >> >>      <3>CTRL-EVENT-DISCONNECTED bssid=6c:3b:6b:ab:ce:d4 reason=0
> >> >>      <3>CTRL-EVENT-SCAN-RESULTS
> >> >>      <3>Trying to associate with 6c:3b:6b:3d:a2:e9
> >(SSID='Palombia'
> >> >> freq=2452 MHz)
> >> >>      <3>Associated with 6c:3b:6b:3d:a2:e9
> >> >>      <3>WPA: Key negotiation completed with 6c:3b:6b:3d:a2:e9
> >[PTK=CCMP
> >> >> GTK=CCMP]
> >> >>      <3>CTRL-EVENT-CONNECTED - Connection to 6c:3b:6b:3d:a2:e9
> >> completed
> >> >> [id=3 id_str=]
> >> >>      <3>WPA: Group rekeying completed with 6c:3b:6b:3d:a2:e9
> >[GTK=CCMP]
> >> >>
> >> >> And yes, working roaming would be nice too...
> >> >
> >> > I have the problem that when roaming networks become disabled
> >> >
> >> >       $ wpa_cli
> >> >       Selected interface 'wlan0'
> >> >
> >> >       Interactive mode
> >> >
> >> >       > list_networks
> >> >       network id / ssid / bssid / flags
> >> >       0       network1        any     [CURRENT]
> >> >       1       network2 any    [DISABLED]
> >> >       2       network3 any    [DISABLED]
> >> >       3       network4 any    [DISABLED]
> >> >       4       network5 any    [DISABLED]
> >> >       Selected interface 'wlan0'
> >> >
> >> >
> >> > I address this by doing network_enable x in wpa_cli and it all
> >comes
> >> > back. I asked Adrian about this in the past, but it needs some
> >> > debugging
> >> > to pin down.
> >>
> >>
> >> Is this iwm(4) as well in your case or another card?
> >>
> >> /bz
> >> _______________________________________________
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> >> "
> >>
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>
> With wpa_supplicant running roaming is set to manual. Bgscan should be
> enabled.
>
> At home we have two n (and 2 g) wifi networks. When powering off one ap it
> connects to the other (in addition to using lagg to failover from ethernet
> to wifi and back).
>
> Your wpa_supplicant should contain each ssid you intend to use. A wildcard
> can be used for open networks.
>
> It's a while since I've tested this functionality but I can test again
> when I get home tonight.
>
>
> --
> Pardon the typos and autocorrect, small keyboard in use.
> Cheers,
> Cy Schubert <Cy.Schubert_at_cschubert.com>
> FreeBSD UNIX: <cy_at_FreeBSD.org> Web: http://www.FreeBSD.org
>
>         The need of the many outweighs the greed of the few.
>