Return-path: Received: from hub022-ca-4.exch022.serverdata.net ([64.78.56.56]:16400 "EHLO HUB022-ca-4.exch022.serverdata.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760049Ab3DCHnb (ORCPT ); Wed, 3 Apr 2013 03:43:31 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8"; format=flowed Date: Wed, 3 Apr 2013 00:35:25 -0700 From: To: "linux-wireless@vger.kernel.org" CC: "johannes@sipsolutions.net" Subject: question on SMPS for AP Message-ID: (sfid-20130403_094335_455663_91C5B552) Sender: linux-wireless-owner@vger.kernel.org List-ID: hi, i was looking into the MAC80211 code for Spatial multiplexing Power Save handling. i see that for the station side, the code seems to be handled. is the same true for an AP interface as well? this is my current understanding and i do not see any code handling for AP for SMPS. From the perspective of an AP, the only thing it needs to do, is to monitor the station for change to dynamic SMPS mode and if the station is in dynamic SMPS mode, set the RTS flag for the first packet to be sent out to the station so that an RTS/CTS mechanism is employed before the packet transfer. this will make the station to wake up its receive chains for the impending packet tranfer. can anyone provide any inputs for the same and direct me to any code that will help in understanding SMPS for AP? thanks in advance best regards Vivek