Return-path: Received: from mms3.broadcom.com ([216.31.210.19]:2116 "EHLO MMS3.broadcom.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752365Ab1HYKiS (ORCPT ); Thu, 25 Aug 2011 06:38:18 -0400 Message-ID: <4E562608.9060700@broadcom.com> (sfid-20110825_123821_965563_140A2BBE) Date: Thu, 25 Aug 2011 12:38:00 +0200 From: "Arend van Spriel" MIME-Version: 1.0 To: "Hao Han" cc: "linux-wireless@vger.kernel.org" Subject: Re: force wifi radio to sleep immediately References: <4E54C87A.4080407@broadcom.com> In-Reply-To: Content-Type: text/plain; charset=iso-8859-1; format=flowed Sender: linux-wireless-owner@vger.kernel.org List-ID: On 08/24/2011 12:12 PM, Hao Han wrote: > Thank you for your quick reply, Gr. AvS. > > According to my understanding, in power save mode (PSM), the station > will go to sleep immediately (i.e. maintaining a very low power) after > sending packet with pwr mgt bit in 802.11 mac header setting to 1. > > My question is if we can force the station to go to such a low power > level by calling some function. > > It seems to me that it costs extra time to disable/enable the radio, > right? I hope to do it very quickly. > > I appreicate your help! > > Best, > Hao I see. Your question is really about power save, which involves more that the radio. Power save is a process better left to the device so there is no interface in place to force that upon a driver/device. Gr. AvS -- Almost nobody dances sober, unless they happen to be insane. -- H.P. Lovecraft --