Return-path: Received: from nbd.name ([46.4.11.11]:44861 "EHLO nbd.name" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751332Ab1ITVxD (ORCPT ); Tue, 20 Sep 2011 17:53:03 -0400 Message-ID: <4E790B3B.9090004@openwrt.org> (sfid-20110920_235307_302663_06469E57) Date: Tue, 20 Sep 2011 23:52:59 +0200 From: Felix Fietkau MIME-Version: 1.0 To: "Luis R. Rodriguez" CC: Johannes Berg , Javier Cardona , Alexander Simon , linux-wireless@vger.kernel.org Subject: Re: [PATCH v3 3/3] mac80211: Add HT operation modes for IBSS References: <35635039ce7d4a79dc62b19d51ccf0d5d4838112.1316297595.git.an.alexsimon@googlemail.com> <1316437459.5995.29.camel@jlt3.sipsolutions.net> <36569806.Rgjanm0GiI@alex-1> <1316521312.3953.27.camel@jlt3.sipsolutions.net> <4E78D990.3090601@openwrt.org> <4E78DF6F.3060304@openwrt.org> <4E78EA05.6000005@openwrt.org> <4E78FFEB.1090301@openwrt.org> In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Sender: linux-wireless-owner@vger.kernel.org List-ID: On 2011-09-20 11:26 PM, Luis R. Rodriguez wrote: > On Tue, Sep 20, 2011 at 2:04 PM, Felix Fietkau wrote: >> If we want to properly enforce Annex J channel pairs, this needs to >> be moved to cfg80211. > > This does not still address the issue of one peer finding out it > cannot deal with an HT40 pair and correcting the topology and > propagating this out. Not yet sure if for 802.11ac we'll need > something similar but its worth considering. Don't think of it as a topology. Each node makes its own decisions about HT40+/HT40-/HT20. If modes are incompatible, fallback to HT20 always works for communicating with a peer. - Felix