From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from nbd.name ([46.4.11.11]:42106 "EHLO nbd.name" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752476Ab1G2SF4 (ORCPT ); Fri, 29 Jul 2011 14:05:56 -0400 Message-ID: <4E32F681.6020900@openwrt.org> (sfid-20110729_200559_955917_D0F09412) Date: Fri, 29 Jul 2011 20:05:53 +0200 From: Felix Fietkau MIME-Version: 1.0 To: Helmut Schaa CC: John Linville , linux-wireless@vger.kernel.org, Johannes Berg Subject: Re: [PATCH 2/2] mac80211: Always send EAPOL frames at lowest rate References: <1311960137-25420-1-git-send-email-helmut.schaa@googlemail.com> <1311960137-25420-2-git-send-email-helmut.schaa@googlemail.com> <4E32F338.8040901@openwrt.org> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Sender: linux-wireless-owner@vger.kernel.org List-ID: On 2011-07-29 8:00 PM, Helmut Schaa wrote: > On Fri, Jul 29, 2011 at 7:56 PM, Helmut Schaa > wrote: >> On Fri, Jul 29, 2011 at 7:51 PM, Felix Fietkau wrote: >>> On 2011-07-29 7:22 PM, Helmut Schaa wrote: >>>> >>>> Since EAPOL frames are normal data frames they are treated by the rate >>>> control algorithm as such. Thus it can happen that the rate control >>>> algorithm chooses an inappropriate rate (minstrel_ht uses MCS rates for >>>> example) for the 4-way handshake and under low signal conditions the >>>> handshake may time out. >>>> >>>> To fix this issue always treat EAPOL frames the same as management >>>> frames and send them with the lowest available rate. >>> >>> Have you tried preventing minstrel_ht from using EAPOL frames for probing >>> different rates instead of forcing it to use the lowest rate? >> >> Nope. I'll give it a try soon. > > Felix, what rate is used by minstrel_ht if there are no statistics yet? MCS0? Yes, rates default to lowest until better ones are available. - Felix