[laptop-discuss] Re: Re: Re: ath vs. dhcpagent

[Garrett D'Amore]

Casper.Dik at Sun.COM wrote:
>>> Sorry, the WPA2 will use the CCMP crypto algorithm,
>>> but the ath driver 
>>> (v0.5)
>>> can't support CCMP; this will be added in future.
>>>       
>> I heard the Atheros adapters support CCMP in hardware. 
>> I noticed that there is a ath_hal.o.uu among the sources to ath-0.5. Is that a closed source low-l
>>     
> evel interface to Atheros hardware? Who provides that? Is CCMP lack of support related to that file
> ?
>
>
> The o.uu file is a closed source file from Atheros (compiled by a single
> person who has access to the source).
>
> As for lack of CCMP support, that file might or might not be to blame.
>   

I'm fairly certain that recent versions of the HAL do have support for
CCMP (certainly I can see evidence of that in the NetBSD code), but it
has to be queried.

Additionally, reading our source code, it looks like there is an attempt
to use it in the Solaris driver.  However, if you have older atheros
hardware, it is possible (likely?) that CCMP is missing from the hardware.

To test this, use a build of the atheros driver built with -DDEBUG, and
set the kernel variable ath:ath_dbg_flags to 0x8000.

You should see "Atheros support H/W CCMP cipher" in syslog if your
hardware supports CCMP.

Note that I've determined this by reading the source, I've not tested
any of it myself, as I don't have any Atheros hardware in a PC running
Solaris x86 right now.

    -- Garrett
> Casper
>
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> laptop-discuss mailing list
> laptop-discuss at opensolaris.org
>   


-- 
Garrett D'Amore, Principal Software Engineer
Tadpole Computer / Computing Technologies Division,
General Dynamics C4 Systems
http://www.tadpolecomputer.com/
Phone: 951 325-2134  Fax: 951 325-2191