Hi,
I'm trying to implement ad-hoc mode in zd1211rw. I partially succeeded
and posted a patch, but now I'm trying to investigate why I had trouble
getting my laptops to talk...
I'm running iwl4965 on one box and zd1211rw on another, both running
2.6.26-rc8
I create the network on the iwl4965 system:
iwconfig wlan0 mode ad-hoc
ifconfig wlan0 up
iwconfig wlan0 essid dev
And then I try to connect on the zd1211rw system:
iwconfig wlan0 mode ad-hoc
ifconfig wlan0 up
iwconfig wlan0 essid dev
If that's not the right way to create an ad-hoc network between 2
systems, please discard the rest of this email and instead tell me how
it should be done...
After running the 3rd command on the zd1211rw system, this happens:
<7>eth7: sta_find_ibss (active_ibss=0)
<7> bssid=66:18:74:24:c1:d8 found
<7> sta_find_ibss: selected 66:18:74:24:c1:d8 current 00:00:00:00:00:00
<7> did not try to join ibss
<7>eth7: Trigger new scan to find an IBSS to join
<7>phy5: HW CONFIG: freq=2412
<7>phy5: HW CONFIG: freq=2417
<7>phy5: HW CONFIG: freq=2422
<7>phy5: HW CONFIG: freq=2427
<7>phy5: HW CONFIG: freq=2432
<7>phy5: HW CONFIG: freq=2437
<7>phy5: HW CONFIG: freq=2442
<7>phy5: HW CONFIG: freq=2447
<7>phy5: HW CONFIG: freq=2452
<7>phy5: HW CONFIG: freq=2457
<7>phy5: HW CONFIG: freq=2462
<7>phy5: HW CONFIG: freq=2467
<7>phy5: HW CONFIG: freq=2472
<4>__ratelimit: 4 messages suppressed
<7>phy5: HW CONFIG: freq=2462
<7>eth7: sta_find_ibss (active_ibss=0)
<7> bssid=66:18:74:24:c1:d8 found
<7> sta_find_ibss: selected 66:18:74:24:c1:d8 current 00:00:00:00:00:00
<7> did not try to join ibss
<7>phy5: Adding new IBSS station 00:16:6f:47:00:46 (dev=eth7)
<7>phy5: Allocated STA 00:16:6f:47:00:46
<7>phy5: Inserted STA 00:16:6f:47:00:46
<7>eth7: sta_find_ibss (active_ibss=0)
<7> bssid=66:18:74:24:c1:d8 found
<7> sta_find_ibss: selected 66:18:74:24:c1:d8 current 00:00:00:00:00:00
<7> did not try to join ibss
<7>eth7: Trigger new scan to find an IBSS to join
<7>phy5: HW CONFIG: freq=2412
<7>phy5: HW CONFIG: freq=2417
and soon after it creates its own IBSS.
Should it not have joined the IBSS it found? That one
(66:18:74:24:c1:d8) is indeed the network I wanted it to connect to,
hosted on my other laptop.
Looking at the code, ieee80211_sta_find_ibss() in mlme.c, I can't see
how it's supposed to work. It's clear why it said it found the other
network, because the ESSID matches. But it's also clear why it didn't
actually bother to try and connect: the ieee80211_sta_join_ibss() call
is surrounded in an if condition which checks the BSSID - but I
(intentionally) didn't specify one, so the condition evaluates as false.
Is this a bug, or am I required to specify an ESSID *and* a BSSID in
order to connect to a pre-existing IBSS network?
Thanks,
Daniel
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