Re: [PATCH] mac80211: Parse IEEE80211_RADIOTAP_RATE on TX

From: Rostislav Lisovy
Date: Mon Aug 25 2014 - 03:52:45 EST

On Mon, 2014-07-21 at 12:20 +0200, Johannes Berg wrote:
> On Thu, 2014-07-10 at 14:27 +0200, Rostislav Lisovy wrote:
> > Add support for parsing radiotap field IEEE80211_RADIOTAP_RATE
> > for transmitted frames. Use the provided datarate value in
> > info->control.rates[] array so it will be used for transmission.
> >
> > Signed-off-by: Rostislav Lisovy <rostislav.lisovy@xxxxxxxxxxx>
> > ---
> > This feature is essential for Transmit Datarate Control (TDC)
> > in future implementation of IEEE 802.11-2012 "Wireless Access
> > for the Vehicular Environment" support.
> It seems like an extremely bad idea to base your implementation of WAVE
> on monitor mode with injection.
> Why can't you add a proper datapath?

You are right. I was overthinking the per-packet datarate setting a
little bit.
If I am not mistaken it is not possible to say that this feature may be
useful as the general method for monitor-mode injection with datarate
until there is some user-space utility really using/needing it?

Best regards;

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