Hm, hostap+sta channel information isn't always correctly propagated

[Adrian Chadd]

As part of trying to replicate what Ed's seeing, I did this:

ifconfig wlanX create wlandev ath1 ssid TESTX up
for wlan 0 .. 3. It picked a DFS channel and started the DFS CAC machinery.

Then I created a sta interface on wlan4 and it did some scanning, then
selected channel 1.
This is what I ended up with:

adrian-home-mips# ifconfig wlan0
wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        ether 00:c0:ca:1a:6c:d4
        media: IEEE 802.11 Wireless Ethernet autoselect mode 11g <hostap>
        status: running
        ssid TEST channel 52 (5260 MHz 11a) bssid 00:c0:ca:1a:6c:d4
        regdomain FCC3 country US ecm authmode OPEN privacy OFF txpower 30
        mcastrate 6 mgmtrate 6 scanvalid 60 wme burst dtimperiod 1
adrian-home-mips# ifconfig wlan1
wlan1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        ether 00:c0:ca:1a:6c:d4
        media: IEEE 802.11 Wireless Ethernet autoselect mode 11g <hostap>
        status: running
        ssid TEST2 channel 52 (5260 MHz 11a) bssid 00:c0:ca:1a:6c:d4
        regdomain FCC3 country US ecm authmode OPEN privacy OFF txpower 30
        mcastrate 6 mgmtrate 6 scanvalid 60 wme burst dtimperiod 1
adrian-home-mips# ifconfig wlan2
wlan2: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        ether 00:c0:ca:1a:6c:d4
        media: IEEE 802.11 Wireless Ethernet autoselect mode 11g <hostap>
        status: running
        ssid TEST2 channel 52 (5260 MHz 11a) bssid 00:c0:ca:1a:6c:d4
        regdomain FCC3 country US ecm authmode OPEN privacy OFF txpower 30
        mcastrate 6 mgmtrate 6 scanvalid 60 wme burst dtimperiod 1
adrian-home-mips# ifconfig wlan3
wlan3: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        ether 00:c0:ca:1a:6c:d4
        media: IEEE 802.11 Wireless Ethernet autoselect mode 11g <hostap>
        status: running
        ssid TEST3 channel 52 (5260 MHz 11a) bssid 00:c0:ca:1a:6c:d4
        regdomain FCC3 country US ecm authmode OPEN privacy OFF txpower 30
        mcastrate 6 mgmtrate 6 scanvalid 60 wme burst dtimperiod 1
adrian-home-mips# ifconfig wlan4
wlan4: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        ether 00:c0:ca:1a:6c:d4
        media: IEEE 802.11 Wireless Ethernet DS/1Mbps mode 11g
        status: associated
        ssid CACHEBOY_DAGLISH channel 1 (2412 MHz 11g) bssid 00:25:86:d8:7c:da
        regdomain FCC3 country US ecm authmode WPA2/802.11i privacy ON
        deftxkey UNDEF TKIP 2:128-bit txpower 30 bmiss 7 scanvalid 450 bgscan
        bgscanintvl 300 bgscanidle 250 roam:rssi 7 roam:rate 5 protmode CTS
        wme burst roaming MANUAL

Shortly after this, I did a manual scan and it seemed to disconnect
from the ssid for some reason and reassociate again. Now all of the
hostap interfaces show up on the right channel.

They were tx'ing beacons on channel 1; it's just that the BSS state
hadn't been updated.

Hm!


Adrian