[PATCH] ACS: fix VHT20

Johannes Berg johannes at sipsolutions.net
Fri Feb 28 11:11:48 EST 2014


On Fri, 2014-02-28 at 15:57 +0100, Michal Kazior wrote:
> On 28 February 2014 15:43, Johannes Berg <johannes at sipsolutions.net> wrote:
> > On Fri, 2014-02-28 at 15:19 +0100, Michal Kazior wrote:
> >> The center segment0 calculation for VHT20 ACS was
> >> incorrect. This caused ACS to fail with:
> >> "Could not set channel for kernel driver".
> >
> > Interesting.  But see my previous patch - the kernel part obviously
> > needs to be fixed but maybe in the beacon it should be set to 0?
> 
> Won't setting it to 0 break older kernels with hostapd ACS for
> VHT20/VHT40? I'm not sure if that's what we want?

Well the *kernel* value in the chandef has to be set correctly,
obviously. I'm merely pointing out that since my recent patch it's
possible to (correctly, the spec says it's reserved) set the field to 0
in the VHT operation IE.

johannes



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