Re: [Madwifi-users] tri-mode scanning with kismet

[Greg C. <ma...@at...>]

I'm guessing that your card is getting lots of phy errors when it switches
into G mode.   Do you have a noisy 2.4 environment?

Blaine Korcel wrote:
> 
>>There's a couple things I'd like to request.
>>
>>First, see if you can rmmod the driver.
>>Must to ath_pci first followed by the other two modules.
>>Probably need to remove the card first.
>>
>>Next, plug in the card and install a fresh driver if it is not automatic
>>on your setup.    without running kismet, see if you can ftp or rsync
>>a few hundred megabytes of file uplink and downlink from your laptop.
>>Note the bandwidth.
> 
> 
> Ok I did this with a rather large file...interesting though I couldn't get
> wireless association to work using cardmgr...had to do it all manually with
> ifconfig and iwconfig...although that's another issue I'll deal with
> later....
> 
> I only have a "b" AP so these tests are with a clean boot, no kismet, manual
> interface setup, 128bit WEP, fresh driver load.
> 
> using scp I got 94kb/sec throughput
> using ftp I got 69kb/sec   interesting but both seem rather poor.  I'll have
> to try it with another "b" only card and see what happens.
> 
> There were no crashes during the test.
> 
> 
>>If you can get thru that successfully - which is the expected behavior -
>>but it crashes when you bring up kismet and monitor mode, then
>>that makes a good argument for looking into the monitor mode patches
>>in the wlan.o module.
> 
> 
> Ok as described in a previous post, at this point, I can jump into kismet,
> monitor mode, and can even scan all the channels without a crash...as long
> as I stay in mode 2.
> 
> I switch to mode 3 and all kinds of problems begin.  Kismet will scan for a
> short time and then stop.  I get in the logs
> 
> kernel: ath0: hardware error; resetting and that continues for quite some
> time if left alone.  might be because I have previously configure using
> ifconfig ath0 up
> 
> At this point I do
> 
> ifdown ath0
> iwpriv ath0 mode 3
> 
> then start kismet....in 34 seconds the machine locks up.
> 
> I still feel the problems are with mode 3 or "g" mode and not specifically
> with monitor mode..although it could be related somehow.  I wish I had a "g"
> AP to test with.
> 
> 
>>thanks,
>>
>>g
>>
>>Blaine Korcel wrote:
>>
>>>also,
>>>
>>>I have only been using this card with kismet...not as a general
> 
> networking
> 
>>>device.
>>>
>>>If you have some tests you would like me to run, let me know.
>>>
>>>Blaine
>>>----- Original Message ----- 
>>>From: "Greg Chesson" <ma...@at...>
>>>To: "Blaine Korcel" <ko...@se...>
>>>Sent: Tuesday, August 12, 2003 3:43 PM
>>>Subject: Re: [Madwifi-users] tri-mode scanning with kismet
>>>
>>>
>>>
>>>
>>>>can you let us know if your kernel crashes only happen when running
>>>
>>>kismet?
>>>
>>>
>>>>If so, then we can concentrate on the monitor mode patches.
>>>>
>>>>Also, when running kismet are you doing anything else that would
> 
> exercise
> 
>>>>either the protocol stacks or the madwifi driver?
>>>>
>>>>g
>>>>
>>>>Blaine Korcel wrote:
>>>>
>>>>
>>>>>Looks like the trimode cards support multiband scanning in Kismet.  For
>>>>>those that care to try it.
>>>>>
>>>>>You need to set up kismet.conf with something like the following :
>>>>>
>>>>>source=prism2_hostap,ath0,combocard
>>>>>sourcechannels=combocard:1,2,3,4,5,56,58,60
>>>>>
>>>>>add all the channels to "sourcechannels" that your card supports, a, b
>>>
>>>and
>>>
>>>
>>>>>g.
>>>>>
>>>>>run the command "iwpriv ath0 mode 0"    which puts it in auto
>>>
>>>mode..should
>>>
>>>
>>>>>be the default..but just to be sure.
>>>>>
>>>>>start kismet_server
>>>>>
>>>>>At this stage I am having frequent crashes of the machine...no kernel
>>>>>logs..so might be just PCI issues on my computer.  However sometimes it
>>>
>>>runs
>>>
>>>
>>>>>for a period of time in which I can see it scan the channel list and
>>>
>>>detect
>>>
>>>
>>>>>AP's along the way.
>>>>>
>>>>>Blaine
>>>>>
>>>>>"640K ought to be enough for anybody."  -  Bill Gates, 1981
>>>>>
>>>>>
>>>>>
>>>>>
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> 
>