Return-path: Received: from mail.atheros.com ([12.36.123.2]:43479 "EHLO mail.atheros.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752571AbZFEHnD (ORCPT ); Fri, 5 Jun 2009 03:43:03 -0400 Received: from mail.atheros.com ([10.10.20.108]) by sidewinder.atheros.com for ; Fri, 05 Jun 2009 00:43:05 -0700 Subject: Re: [ath9k-devel] [PATCH 14/15] mac80211: move management / no-ack frame rate decision to mac80211 From: Jouni Malinen To: Johannes Berg CC: Luis Rodriguez , Zhu Yi , Chittajit Mitra , "linux-wireless@vger.kernel.org" , "linville@tuxdriver.com" , "ipw3945-devel@lists.sourceforge.net" , Derek Smithies , "ath9k-devel@lists.ath9k.org" , Reinette Chatre In-Reply-To: <1244183288.22576.93.camel@johannes.local> References: <1244180502-4323-1-git-send-email-lrodriguez@atheros.com> <1244180502-4323-15-git-send-email-lrodriguez@atheros.com> <1244183288.22576.93.camel@johannes.local> Content-Type: text/plain Date: Fri, 5 Jun 2009 10:42:58 +0300 Message-ID: <1244187778.3952.2.camel@jm-desktop> MIME-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org List-ID: On Thu, 2009-06-04 at 23:28 -0700, Johannes Berg wrote: > On Fri, 2009-06-05 at 01:41 -0400, Luis R. Rodriguez wrote: > > All rate control algorithms agree to send management and no-ack > > frames at the lowest rate. They also agree to do this when sta > > and the private rate control data is NULL. We move this to mac80211 > > and simplify the rate control algorithm code. > > We previously thought this would constrain our rate control algorithms > more than we would like for future experimentation with higher multicast > rates. Has that changed? I hope not. I don't like the idea of forcing the lowest rate in mac80211; we should allow rate control algorithms to be improved to do more intelligent selection of rate at least for multicast/broadcast frames. That might also be of use for some (likely post-association) unicast management frames since their use is going to increase in the future. - Jouni