Re: Recent fragility with if_wi, 802.11 adhoc/wep, and Tiger

Johann Hugo wrote:
> On Tuesday 19 July 2005 11:21, Alex Dupre wrote:
> 
>>Robert Watson wrote:
>>
>>>I fairly regularly use 802.11 adhoc with WEP to communicate between my
>>>6.x/7.x FreeBSD notebook using if_wi, and my Apple PowerBook running Mac
>>>OS X Tiger.  A few days ago, when I updated from a June to a July HEAD
>>>revision, this became quite "fragile".
>>>I was wondering if anyone else has seen this problem, though.
>>
>>I have a (not so) similar problem with my atheros based D-Link DWL-G650
>>card with late CURRENTs. The problem is very strange: I can connect
>>stablily to my neighbor's 11g wireless network (even if the signal is
>>lower than my D-Link DI-624 AP) and I hardly can connect to my AP. When
>>it happens, the connection goes down after few seconds (no carrier) and
>>I cannot reconnect anymore. This used to work with older current (about
>>a month ago). I though the AP was broken, but I have a 11b device (voip
>>phone) that can connect without problems (yes, I tried to connect the
>>card in 11b mode, w/ & w/o wep, but it's the same).
>>Anyone seeing this?
> 
> 
> I am also getting problems with my atheros cards. When the connection goes 
> down I'm seeing a lot of "rx failed 'cuz of PHY err" and "CCK timing" errors.

wi != ath

I cannot tell if you're operating in adhoc mode as you've provided no 
details.  Last note I recall from you regarded ap mode operation.

> 
> lab3# athstats
> 8894 tx management frames
> 5 tx frames discarded prior to association
> 887 tx failed 'cuz too many retries
> 13077 long on-chip tx retries
> 7 tx frames with no ack marked
> 9969 rx failed 'cuz of bad CRC
> 138910 rx failed 'cuz of PHY err
>     138888 CCK timing
>     22 CCK restart
> 1 beacons transmitted
> 39 periodic calibrations
> 1180 rate control checks
> 25 rate control dropped xmit rate
> rssi of last ack: 15
> avg recv rssi: 44
> 1 switched default/rx antenna
> Antenna profile:
> [1] tx     7720 rx    29817
> [2] tx      292 rx       37
> 
> With tcpdump -y IEEE802_11 I can see the packets, but without -y IEEE802_11 
> there is nothing.


"1 beacons transmitted" is very odd.  Is your athstats out of sync w/ 
the driver?  Try providing basic info if you want help.

	Sam