[PATCH RESEND] hostapd: add VHT tx power envelope IE

[Rajkumar Manoharan]

On Wed, Oct 28, 2015 at 11:00:05PM +0200, Jouni Malinen wrote:
> On Fri, Oct 23, 2015 at 06:22:14PM +0530, Rajkumar Manoharan wrote:
> > Add VHT transmit power envelope element defined in IEEE std
> > 802.11ac-2013 8.4.2.164 for VHT bandwidth channel switch.
>
> Please note that this has been renamed to "Transmit Power Envelope
> element" in REVmc (i.e., "VHT" removed from the name).
>
Will remove VHT in next version. Should I keep the spec. section as it
is?

[...]
> > +	/*
> > +	 * Local Maximum Transmit power is encoded as 2's complement
> > +	 * with a 0.5 dB step
> > +	 */
> > +	max_tx_power = ~(chan->max_tx_power * 2) + 1;
> > +	*eid++ = max_tx_power;
> > +	*eid++ = max_tx_power;
> > +	*eid++ = max_tx_power;
> 
> Could you please clarify why all three values are set to the same value?
> Would there be no case where the local maximum transmit power is
> different for 20, 40, and 80 MHz channel cases?
>
Since I do not find per bandwidth max tx power, I used the channel max
tx power for all bandwith. Is there a way to extract per-bw max tx power from
regulatory. Please help.

Will address your other comments in next version.

-Rajkumar