[PATCH 9/9] mac80211: save transmit power envelope element and power constraint

Johannes Berg johannes at sipsolutions.net
Fri Aug 13 03:11:52 PDT 2021


On Fri, 2021-08-13 at 17:16 +0800, Wen Gong wrote:
> 
> yes, it should have some flag/logic to check whether it is BIGTK.
> If you know it, you can tell me. :)

Uh, actually, we don't have a secure indication of BIGTK getting used
until after the 4-way-HS.

> > 
> Yes, the lower driver also have the max power limit itself. If power 
> calulated
> from the fake beacon is bigger than the max power limit, then it will be
> ignored.

Right.

> > 
> The Transmit Power Envelope is not existed in the assoc response, it is 
> existed
> in beacon. So it can not use assoc response.

Right.


Given this discussion, I think we should just leave it as is, and simply
not assume that the TPE is protected by beacon protection or such. There
are a number of other similar parameters, and doing some real protection
at this level would likely require further spec changes.

johannes




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