Return-path: Received: from mail-vb0-f52.google.com ([209.85.212.52]:43982 "EHLO mail-vb0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751062Ab3FQQmf (ORCPT ); Mon, 17 Jun 2013 12:42:35 -0400 Received: by mail-vb0-f52.google.com with SMTP id f12so2112671vbg.39 for ; Mon, 17 Jun 2013 09:42:35 -0700 (PDT) MIME-Version: 1.0 Date: Mon, 17 Jun 2013 11:42:34 -0500 Message-ID: (sfid-20130617_184239_378153_C90826F2) Subject: Timer rollback in beacons on AR9342-based AP From: Harshal Chhaya To: linux-wireless Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-wireless-owner@vger.kernel.org List-ID: Hello, On an AR9342-based AP, we occasionally see the TSF timer in beacons roll back i.e. the timer resets and starts over. This causes all clients to disconnect probably because their power-save timers get out of sync. This typically happens under heavy load. The AP is running openwrt with compat-wireless from Feb 22nd 2013 and the 1.0 release of hostapd (pkg version = 20120910). Any ideas on what could be causing the timer to reset? What kind of additional information would help in debugging this? Thanks, - Harshal