[Fwd: WLAN funnies]

Andy Green andy at openmoko.com
Thu Mar 20 13:06:34 CET 2008


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(sent it to the bounces address by mistake)

- -------- Original Message --------
Subject: WLAN funnies
Date: Thu, 20 Mar 2008 11:34:29 +0000
From: Andy Green <andy at openmoko.com>
To: openmoko-kernel-bounces at lists.openmoko.org,  Samuel Ortiz
<sameo at openedhand.com>

Hi folks -

I have had a GTA02 up on WLAN (WPA, Belkin AP with default firmware) for
a couple of days now.  I have some little experiences with it.

 - First it seemed there was something up with ARP for its IP.  If I
pinged out from the GTA02 on WLAN, then my laptop can ping to the GTA02
WLAN IP.  Before I pinged out from the GTA02, it seemed it did not get
an ARP query response and claimed there was no route despite everything
was set.  It should have had an ARP request and response without that.

 - Next the connection did not stay nailed up for more than several
hours.  When I examined the situation by connecting the debug board
console, and tried to ping again, I saw that wpa_supplicant reacted by
noting that association was lost, and reacquired it quickly.  A
subsequent ping worked without doing anything else.

 - I reacted to this by doing

ping <router ip> &

on the GTA02 and it stayed up for a day or so.  I noticed it was
unreachable again today.

 - When I examine again with the debug console, the ping is still
running but gives

recvfrom(netlink): No buffer space available

once a second.  dmesg has this in it repeatedly

[241647.840000] AR6000 disconnected from 00:11:50:ad:ce:38
[241647.840000] Disconnect Reason is 4
[241647.845000] Protocol Reason/Status Code is 4
[241647.845000] AssocResp Frame = NULL
[241647.880000] AR6000 connected event on freq 2462 with bssid
00:11:50:ad:ce:38  listenInterval=100, beaconInterval = 100, beaconIeLen
= 26 assocReqLen=48 assocRespLen =22
[241647.885000] Network: Infrastructure
[241647.890000]
[241647.890000] BeaconIEs= 30 18 01 00 00 0f ac 02 02 00 00 0f ac 04 00
0f ac 02 01 00 00 0f ac 02 00 00
[241647.910000]
recvfrom(netlink): No buffer space available
[241647.910000] AssocRespIEs= 01 04 82 84 8b 96 32 08 8c 12 98 24 b0 48
60 6c
[241647.915000] AssocReqIEs= 00 04 66 72 6f 68 01 08 82 84 8b 0c 12 96
18 24 32 04 30 48 60 6c 30 14 01 00 00 0f ac 02 01 00 00 0f ac 04 01 00
00 0f ac 02 00 00
[241648.340000]  WMI Control EP full, dropping packet : 0xC0AB76C0, len:2
[241648.355000]  WMI Control EP full, dropping packet : 0xC0AB7780, len:47
[241648.400000]  WMI Control EP full, dropping packet : 0xC565A900, len:2
[241648.410000]  WMI Control EP full, dropping packet : 0xC565AF00, len:47

 - iwconfig does not list the logical WLAN network interface eth0 any more.

Unfortunately the crisis that left it in this state is flushed from the
dmesg buffer.  Any ideas?

- -Andy
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