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Subject: Re: [Patch] mac80211: SMPS for AP Mode
From: Johannes Berg <johannes@sipsolutions.net>
To: Vivekananda Holla <vivekanandah@posedge.com>
Cc: linux-wireless <linux-wireless@vger.kernel.org>
Date: Wed, 10 Apr 2013 11:47:10 +0200
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On Wed, 2013-04-10 at 11:46 +0200, Johannes Berg wrote:
> On Wed, 2013-04-10 at 15:05 +0530, Vivekananda Holla wrote:
> > hi Johannes,
> > 
> > do you mean the IEEE80211_TX_RC_USE_RTS_CTS flag to set RTS/CTS
> > protection for the packet?
> > 
> > I did not use this based on the below understanding
> > 
> > my understanding for SMPS is that a station system does not need to
> > send an RTS packet before frame transmission for SMPS however an AP
> > system needs to send out an RTS frame.
> 
> No? Where did you get that idea? It's wrong, it doesn't matter whether
> it's AP or not.

Of course, APs will rarely use SMPS, so stations almost never have to
deal with an AP that uses it ...

johannes