[PATCH] hostapd: take configured antenna set into consideration

[Ben Greear]

On 01/22/2016 03:13 AM, Felix Fietkau wrote:
> On 2015-12-09 21:20, greearb at candelatech.com wrote:
>> From: Ben Greear <greearb at candelatech.com>
>>
>> If user has configured TX antennas to be less than what
>> hardware advertises, the MCS reported by hardware will
>> be too large.  So, remove MCS sets accordingly.
>>
>> Signed-off-by: Ben Greear <greearb at candelatech.com>
> Why is it necessary to do this in user space? Shouldn't the driver
> recalculate its MCS capabilities and let hostapd use the updated
> information.
> IIRC that's what ath9k is doing at the moment.


I guess that could work too, but long term, I think hostapd should have
a lot more control over this anyway:  Maybe one vAP would like to be 1x1
and another 3x3 on the same radio (different vdevs) for instance.  I'd
use this feature for testing, but perhaps others could take advantage
of it in other ways.

I haven't tested ath9k in this scenario...have you been able to confirm
that the beacons show proper MCS values with stock hostapd when you lower
the NSS?

Thanks,
Ben


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