Return-path: Received: from he.sipsolutions.net ([78.46.109.217]:55423 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752677Ab0CYGq3 (ORCPT ); Thu, 25 Mar 2010 02:46:29 -0400 Subject: Re: [PATCH 0/2] mac80211: cfg80211: Roam trigger support From: Johannes Berg To: Juuso Oikarinen Cc: linville@tuxdriver.com, linux-wireless@vger.kernel.org, luciano.coelho@nokia.com In-Reply-To: <1269327754-995-1-git-send-email-juuso.oikarinen@nokia.com> References: <1269327754-995-1-git-send-email-juuso.oikarinen@nokia.com> Content-Type: text/plain; charset="UTF-8" Date: Wed, 24 Mar 2010 23:46:07 -0700 Message-ID: <1269499567.5041.0.camel@jlt3.sipsolutions.net> Mime-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org List-ID: On Tue, 2010-03-23 at 09:02 +0200, Juuso Oikarinen wrote: > To implement good performance WLAN roaming, it is not sufficient to start > scanning for other available AP's only after the currently serving association > is lost. > > The entity controlling the roaming will need to get indication of a > deteriorating WLAN connection in order to start preparing for roaming already > before the serving association is lost. This way, it can roam to a better AP > perhaps even before the serving association becomes too bad in quality. > > These patches propose an implementation facilitating this using a simple RSSI > threshold and hysteresis approach. So this is merged, anyone want to implement it in mac80211 so we can start playing with it? I won't get around to it for quite a while. johannes