VHT 160Mhz and nss related config.

[Ben Greear]

On 02/12/2017 11:06 PM, Johannes Berg wrote:
> On Fri, 2017-02-10 at 14:58 -0800, Ben Greear wrote:
>> So, it appears that the ath10k QCA9984 4x4 160Mhz chip can do 4x4
>> MIMO at VHT80, but
>> it can do only 2x2 MIMO at VHT160/80+80.
>>
>> When configuring a peer, we need to tell the firmware the number of
>> spatial streams
>> of the peer at VHT160 and at VHT80 and lower.  They are not the same
>> value.
>>
>> I cannot think of any standard way to get this information based on
>> VHT capabilities and such.  Currently, one could just assume VHT160
>> NSS is 1/2 of the VHT80 NSS, but that is unlikely to be true for all
>> vendors.
>
> This was recently added to the VHT capabilities in the spec, see Table
> 9-250 in 802.11-2016.
>
> johannes
>

I don't have that spec...maybe you could post a patch that adds that flag
and/or other fields to the appropriate header files?  I can attempt to
add support to ath10k after that...

Thanks,
Ben

-- 
Ben Greear <greearb at candelatech.com>
Candela Technologies Inc  http://www.candelatech.com