Return-path: Received: from caiajhbdcbef.dreamhost.com ([208.97.132.145]:55470 "EHLO spunkymail-a4.g.dreamhost.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1757007AbZEVPiK (ORCPT ); Fri, 22 May 2009 11:38:10 -0400 Message-ID: <4A16C6DC.7070502@hiramoto.org> Date: Fri, 22 May 2009 17:38:04 +0200 From: Karl Hiramoto MIME-Version: 1.0 To: hostap@lists.shmoo.com, linux-wireless , "ath9k-devel@lists.ath9k.org" Subject: Re: [ath9k-devel] hostapd not sending beacons, and no traffic. References: <4A168B8A.4070609@hiramoto.org> <4A16AD12.2020200@hiramoto.org> In-Reply-To: <4A16AD12.2020200@hiramoto.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Sender: linux-wireless-owner@vger.kernel.org List-ID: Karl Hiramoto wrote: > more info on this enabling debug in ath9k > > ath9k: AR_INTR_SYNC_LOCAL_TIMEOUT > ath9k: AR_INTR_SYNC_LOCAL_TIMEOUT > ath9k: AR_INTR_SYNC_LOCAL_TIMEOUT > ath9k: AR_INTR_SYNC_LOCAL_TIMEOUT > ath9k: AR_INTR_SYNC_LOCAL_TIMEOUT > ath9k: AR_INTR_SYNC_LOCAL_TIMEOUT > ath9k: AR_INTR_SYNC_LOCAL_TIMEOUT > ath9k: AR_INTR_SYNC_LOCAL_TIMEOUT > ath9k: AR_INTR_SYNC_LOCAL_TIMEOUT > ath9k: AR_INTR_SYNC_LOCAL_TIMEOUT > ath9k: AR_INTR_SYNC_LOCAL_TIMEOUT > ath9k: AR_INTR_SYNC_LOCAL_TIMEOUT > ath9k: AR_INTR_SYNC_LOCAL_TIMEOUT > ath9k: receive FIFO overrun interrupt > ath9k: 0xf0010071 => 0x10000 > ath9k: disable IER > ath9k: new IMR 0x10000 > ath9k: 0x10000 => 0xf0010071 > ath9k: new IMR 0x918104b4 > ath9k: enable IER > ath9k: AR_IMR 0x918104b4 IER 0x1 > ath9k: AR_INTR_SYNC_LOCAL_TIMEOUT > ath9k: AR_INTR_SYNC_LOCAL_TIMEOUT > ath9k: AR_INTR_SYNC_LOCAL_TIMEOUT > ath9k: AR_INTR_SYNC_LOCAL_TIMEOUT > ath9k: AR_INTR_SYNC_LOCAL_TIMEOUT > ath9k: AR_INTR_SYNC_LOCAL_TIMEOUT > ath9k: AR_INTR_SYNC_LOCAL_TIMEOUT > ath9k: AR_INTR_SYNC_LOCAL_TIMEOUT > ath9k: AR_INTR_SYNC_LOCAL_TIMEOUT > ath9k: AR_INTR_SYNC_LOCAL_TIMEOUT > ath9k: AR_INTR_SYNC_LOCAL_TIMEOUT > ath9k: AR_INTR_SYNC_LOCAL_TIMEOUT > > Some more info. If i rate limit the interface, this bug never occurs. tc qdisc add dev wlan0_0 root handle 1: cbq avpkt 1000 bandwidth 20mbit If i restart hostapd, the interface comes back OK.. Or anything that calls ath_reset() will make it come back. Reproducing this downloading a http large file, without QOS it's always reproduceable. Usually It occurs before 2MB is downloaded. This is on a 266 mhz IXP425. So maybee some kind of race happening here.. -- Karl