Return-path: Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:43352 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1755257AbYICDer (ORCPT ); Tue, 2 Sep 2008 23:34:47 -0400 Date: Tue, 02 Sep 2008 20:34:40 -0700 (PDT) Message-Id: <20080902.203440.216468929.davem@davemloft.net> (sfid-20080903_055041_969061_23B1DC08) To: yi.zhu@intel.com Cc: linville@tuxdriver.com, linux-wireless@vger.kernel.org, assaf.krauss@intel.com, tomas.winkler@intel.com Subject: Re: [PATCH 1/9] iwlwifi: W/A for the TSF correction in IBSS From: David Miller In-Reply-To: <1220411930-15216-2-git-send-email-yi.zhu@intel.com> References: <1220411930-15216-1-git-send-email-yi.zhu@intel.com> <1220411930-15216-2-git-send-email-yi.zhu@intel.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Sender: linux-wireless-owner@vger.kernel.org List-ID: From: Zhu Yi Date: Wed, 3 Sep 2008 11:18:42 +0800 > From: Assaf Krauss > > This patch is a W/A for the TSF sync issue in IBSS merging. HW is not > capable to sync TSF (it's constantly little behind). This creates > constant IBSS merging upon reception of each beacon, adding and removing > station which in turn creates above 50% packet loss and thus dramatically > degrade the throughput. The W/A simply stops the driver from declaring it > has a reliable TSF value and thus eliminates IBSS merging. > > Signed-off-by: Assaf Krauss > Signed-off-by: Tomas Winkler > Signed-off-by: Zhu Yi Acked-by: David S. Miller