Re: wlan can't discover known networks after relocating

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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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.