On 02/14/2017 11:47 PM, Johannes Berg wrote:
On Tue, 2017-02-14 at 13:01 -0800, greearb@xxxxxxxxxxxxxxx wrote:
From: Ben Greear <greearb@xxxxxxxxxxxxxxx>
This allows one to disable VHT160 (or 80+80) on hardware
that might otherwise try to use it. One potential reason
to do this is that at least some 160Mhz/80+80 hardware can
only do 2x2 at 160Mhz, but can do 4x4 at 80Mhz. And, due to
driver and firmware issues, it may effectively be limitted
to 1x1 at 160Mhz for some NICs.
I think the feature is acceptable and don't mind adding that (though
perhaps we should start thinking about making some of these things
debug-only features), but I think the description of why you might want
to do this is misleading - those issues you're describing really should
be solved differently, and I posted the basis for that yesterday.
Likely for some time remote third-party peers will not update with your patches
to advertise the proper IEs, even if the local system does?
Either way, I suspect that 4x4 VHT80 may perform quite well vs 2x2 VHT160 if
there is any sort of interference on the secondary 80Mhz band...
But, I can just remove the 'why' part of the description entirely if you prefer?
Thanks,
Ben
--
Ben Greear <greearb@xxxxxxxxxxxxxxx>
Candela Technologies Inc http://www.candelatech.com
