wlan can't discover known networks after relocating
Cy Schubert
Cy.Schubert at cschubert.com
Fri Sep 20 01:25:53 UTC 2019
In message <7938e5fa-67da-35fa-10d0-ee3004438df7 at FreeBSD.org>, Johannes
Lundber
g writes:
>
> On 9/19/19 3:06 PM, Adrian Chadd wrote:
> > 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
> > <mailto:cy.schubert at gmail.com>> wrote:
> >
> > On September 19, 2019 8:20:07 AM PDT, Adrian Chadd
> > <adrian.chadd at gmail.com <mailto: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
> > <mailto: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:
> > >> >>
> > >> >>Â Â Â > scan
> > >> >>Â Â Â OK
> > >> >>Â Â Â <3>CTRL-EVENT-SCAN-RESULTS
> > >> >>Â Â Â <3>Trying to associate with 6c:3b:6b:3d:a2:e9
> > >(SSID='Palombia'
> > >> >> freq=2452 MHz)
> > >> >>Â Â Â <3>CTRL-EVENT-DISCONNECTED bssid=6c:3b:6b:3d:a2:e9 reason
> =0
> > >> >>Â Â Â <3>CTRL-EVENT-SCAN-RESULTS
> > >> >>Â Â Â <3>Trying to associate with 6c:3b:6b:ab:ce:d4
> > >(SSID='Palombia'
> > >> >> freq=2412 MHz)
> > >> >>Â Â Â <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:
> > >> >>
> > >> >>Â Â Â <3>WPA: Group rekeying completed with 6c:3b:6b:ab:ce:d4
> > >[GTK=CCMP]
> > >> >>Â Â Â <3>CTRL-EVENT-DISCONNECTED bssid=6c:3b:6b:ab:ce:d4 reason
> =0
> > >> >>Â Â Â <3>CTRL-EVENT-SCAN-RESULTS
> > >> >>Â Â Â <3>Trying to associate with 6c:3b:6b:3d:a2:e9
> > >(SSID='Palombia'
> > >> >> freq=2452 MHz)
> > >> >>Â Â Â <3>Associated with 6c:3b:6b:3d:a2:e9
> > >> >>Â Â Â <3>WPA: Key negotiation completed with 6c:3b:6b:3d:a2:e9
> > >[PTK=CCMP
> > >> >> GTK=CCMP]
> > >> >>Â Â Â <3>CTRL-EVENT-CONNECTED - Connection to 6c:3b:6b:3d:a2:e9
> > >> completed
> > >> >> [id=3 id_str=]
> > >> >>Â Â Â <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
> > >> >
> > >> >Â Â Â Â $ wpa_cli
> > >> >Â Â Â Â Selected interface 'wlan0'
> > >> >
> > >> >Â Â Â Â Interactive mode
> > >> >
> > >> >Â Â Â Â > list_networks
> > >> >Â Â Â Â 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]
> > >> >Â Â Â Â 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
> > >> _______________________________________________
> > >> freebsd-wireless at freebsd.org
> > <mailto:freebsd-wireless at freebsd.org> mailing list
> > >> https://lists.freebsd.org/mailman/listinfo/freebsd-wireless
> > >> To unsubscribe, send any mail to
> > >"freebsd-wireless-unsubscribe at freebsd.org
> > <mailto:freebsd-wireless-unsubscribe at freebsd.org>
> > >> "
> > >>
> > >_______________________________________________
> > >freebsd-current at freebsd.org <mailto:freebsd-current at freebsd.org>
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> >
> > With wpa_supplicant running roaming is set to manual. Bgscan
> > should be enabled.Â
> >
> > 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
> > <mailto:Cy.Schubert at cschubert.com>>
> > FreeBSD UNIX: <cy at FreeBSD.org> Web: http://www.FreeBSD.org
> >
> > Â Â Â Â The need of the many outweighs the greed of the few.
> >
>
> Hmm so in other words, you have to set bgscan for each network entry you
> want roaming? What are some good values for this?
Just tested here. It worked after a short delay, with a not-so-young laptop
with iwn.
wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
ether 20:NN:NN:NN:NN:NN
groups: wlan
ssid "BBBBBBBB" channel 1 (2412 MHz 11g ht/20) bssid 78:BB:BB:BB:BB:BB
regdomain FCC country US authmode WPA2/802.11i privacy ON
deftxkey UNDEF AES-CCM 2:128-bit AES-CCM 3:128-bit txpower 30
bmiss 120 scanvalid 16959 protmode CTS ampdulimit 64k -amsdutx amsdurx
shortgi -stbc -ldpc wme roaming MANUAL
media: IEEE 802.11 Wireless Ethernet MCS mode 11ng
status: associated
nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
And the gory details:
Sep 19 17:21:35 slippy wpa_supplicant[381]: wlan0: CTRL-EVENT-DISCONNECTED
bssid=a6:NN:NN:NN:NN:NN reason=0
Sep 19 17:21:35 slippy wpa_supplicant[381]: wlan0: Trying to associate with
a6:NN:NN:NN:NN:NN (SSID='AAA' freq=2462 MHz)
Sep 19 17:21:35 slippy wpa_supplicant[381]: Failed to add supported
operating classes IE
Sep 19 17:21:35 slippy wpa_supplicant[381]: wlan0: Associated with
a6:NN:NN:NN:NN:NN
Sep 19 17:21:45 slippy wpa_supplicant[381]: wlan0: Authentication with
a6:08:ea:9c:a0:84 timed out.
Sep 19 17:21:45 slippy wpa_supplicant[381]: wlan0: CTRL-EVENT-DISCONNECTED
bssid=a6:NN:NN:NN:NN:NN reason=3 locally_generated=1
Sep 19 17:21:47 slippy wpa_supplicant[381]: wlan0: Trying to associate with
78:NN:NN:NN:NN:NN (SSID='BBBBBBBBB' freq=2412 MHz)
Sep 19 17:21:47 slippy wpa_supplicant[381]: Failed to add supported
operating classes IE
Sep 19 17:21:47 slippy wpa_supplicant[381]: wlan0: Associated with
78:NN:NN:NN:NN:NN
Sep 19 17:21:48 slippy wpa_supplicant[381]: wlan0: WPA: Key negotiation
completed with 78:NN:NN:NN:NN:NN [PTK=CCMP GTK=CCMP]
Sep 19 17:21:48 slippy wpa_supplicant[381]: wlan0: CTRL-EVENT-CONNECTED -
Connection to 78:NN:NN:NN:NN:NN completed [id=7 id_str=]
AAA is my cell phone. the B's are $JOB.
The relevant parts of my wpa_supplicant.conf:
network={
ssid="AAA"
priority=6
proto=RSN WPA
key_mgmt=WPA-PSK
pairwise=CCMP
group=CCMP
psk="x"
}
network={
ssid="BBBBBBBBB"
scan_ssid=1
priority=5
proto=RSN WPA
key_mgmt=WPA-PSK
pairwise=CCMP TKIP
group=CCMP TKIP
psk="y"
}
#Wildcard match for SSID (plaintext APs only). This example select any
#open AP regardless of its SSID.
network={
priority=0
disabled=1
key_mgmt=NONE
}
Hope this helps.
--
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.
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