[wireless-regdb] [PATCH] wireless-regdb: Update regulatory rules for Brazil (BR)

[Johannes Berg]

On Fri, 2022-09-09 at 19:29 -0300, Cesar Eduardo Barros wrote:
> 
>  From my quick look, it seems that it would set a NO-160MHZ flag in the 
> rule, which would then propagate to each 20MHz sub-channel, and probably 
> would lead to it rejecting the use of the whole as a 160MHz channel; but 
> there's also the 80+80 mode, which would still be allowed (and I vaguely 
> recall seeing somewhere that adjacent 80+80 was prefered over 160 for 
> some reason).

Much hardware doesn't support it though. I guess it might be easier to
do separate CCA in that case? Dunno.

Anyway.

> Unfortunately, I don't have any hardware which can use 160MHz channels; 
> it's only last month that I upgraded my AP to one which can use 80MHz 
> channels (which is what led me to looking into all this stuff).
> 

Really what I wanted to say is that you should be able to compile a
kernel with e.g. ARCH=um per the instructions at

https://w1.fi/cgit/hostap/tree/tests/hwsim/vm/README

and then test it all in "userspace" with hwsim in the userspace kernel.

johannes