From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-wg0-f46.google.com ([74.125.82.46]:34435 "EHLO mail-wg0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755089AbbCCKPl (ORCPT ); Tue, 3 Mar 2015 05:15:41 -0500 Received: by wghn12 with SMTP id n12so39034633wgh.1 for ; Tue, 03 Mar 2015 02:15:40 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <1425375418.2450.27.camel@sipsolutions.net> References: <1423568924-11895-1-git-send-email-michal.kazior@tieto.com> <1425374168.2450.17.camel@sipsolutions.net> <1425375418.2450.27.camel@sipsolutions.net> From: Krishna Chaitanya Date: Tue, 3 Mar 2015 15:45:20 +0530 Message-ID: (sfid-20150303_111546_138439_421B9323) Subject: Re: [PATCH] mac80211: disable u-APSD queues by default To: Johannes Berg Cc: Michal Kazior , linux-wireless Content-Type: text/plain; charset=UTF-8 Sender: linux-wireless-owner@vger.kernel.org List-ID: On Tue, Mar 3, 2015 at 3:06 PM, Johannes Berg wrote: > >> >> Cisco 4410N originally forced us to enable VO by >> >> default only because it treated non-VO ACs as >> >> legacy. > >> Mixed mode (uapsd + legacy) is not really the optimal >> configuration, where we expect STA to send trigger frames periodically >> to retrieve the DL packets (especially very first packet). >> >> But still if we want power save, i suggest going for >> All u-apsd (0xF), so that AP will inform us by setting the TIM bit >> and we can retrieve the first frame. >> (We have this patch internally and it works well). > > Except where it doesn't work, like on the Cisco 4410N - see above. But for that single AP, we are forced to lose efficient power savings unless user configured explicitly.