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Date:      Tue, 08 Nov 2005 08:14:21 -0800
From:      Sam Leffler <sam@errno.com>
To:        Michael VInce <mv@roq.com>
Cc:        Jochen Gensch <incmc@gmx.de>, freebsd-mobile@freebsd.org
Subject:   Re: Atheros 108 Mbit mode
Message-ID:  <4370CEDD.2080404@errno.com>
In-Reply-To: <43708587.8040301@roq.com>
References:  <4362188D.1030308@gmx.de> <43708587.8040301@roq.com>

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Michael VInce wrote:
> Jochen Gensch wrote:
> 
>> Hi!
>>
>> Does anyone have a working 108 Mbit with an Atheros based wireless card?
>> I cannot set it up here, even though 54 Mbit cards work fine...
>>
>> Jochen
>> _______________________________________________
>>
>>  
>>
> I bought a 108mbit card hoping it would magically work, it didn't and I 
> realized its a bad idea to buy any 108mbit card.

Not sure what your point is but I recently verified that static turbo 
mode worked and got 52Mb/s for upstream tcp netperf in close proximity 
and ~65Mb/s for udp unidirectional traffic.  This is current with the 
latest hal but the hal should not matter. Nightly runs of the linux code 
with SuperG support hit 90+ Mb/s (though I consider that an unrealistic 
figure for normal operation).

I have repeatedly stated that dynamic turbo support (required for 11g 
operation) is not going to be committed any time soon.  If you want it 
now run the ndis driver but understand that turbo in 11g is a hit+miss 
proposition because of spectrum restrictions; better to use static (i.e. 
non-dynamic) turbo in 11a where you are less likely to be affected by 
competing traffic.

As for price the cost of the equipment is so low that you're saving 
little by buying an Atheros-based product that does not have turbo mode.

	Sam



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