Return-path: Received: from fk-out-0910.google.com ([209.85.128.189]:5596 "EHLO fk-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751670AbYI1QY2 (ORCPT ); Sun, 28 Sep 2008 12:24:28 -0400 Received: by fk-out-0910.google.com with SMTP id 18so1649886fkq.5 for ; Sun, 28 Sep 2008 09:24:24 -0700 (PDT) Message-ID: <1ba2fa240809280924n1505e049w7800e3ef28449e8e@mail.gmail.com> (sfid-20080928_182431_866190_1A7A533B) Date: Sun, 28 Sep 2008 19:24:24 +0300 From: "Tomas Winkler" To: "Johannes Berg" Subject: Re: [PATCH 1/1] mac80211: send action frame when toggling SM PS mode Cc: linville@tuxdriver.com, yi.zhu@intel.com, linux-wireless@vger.kernel.org, "Emmanuel Grumbach" In-Reply-To: <1222618769.7064.0.camel@johannes.berg> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 References: <1222618493-19019-1-git-send-email-tomas.winkler@intel.com> <1222618769.7064.0.camel@johannes.berg> Sender: linux-wireless-owner@vger.kernel.org List-ID: On Sun, Sep 28, 2008 at 7:19 PM, Johannes Berg wrote: > On Sun, 2008-09-28 at 19:14 +0300, Tomas Winkler wrote: >> From: Emmanuel Grumbach >> >> This patch makes mac80211 able to send action frames when toggling >> (SM PS) Spacial Multiplexing Power Save mode. >> >> Example: >> 1. >> Low lever driver may close some of RX chains in power save mode >> and needs to announce to AP that a RTS frame is need in order to wake all >> RX chains, on other hand SM PS can be disabled on CAM mode or if HW is able >> to wake all chains without RTS frame. >> >> 2. >> iwlwifi can call this function when it detects that only >> one antenna can effectively receive then MS PS mode is set to STATIC and >> AP is asked not to send MIMO rates packets. > > Why is the driver managing the PS mode to start with? What PS mode, SM PS mode or traditional PS mode? Please be more verbose so I don't have to guess what you mean. Thanks Tomas