From owner-freebsd-current@FreeBSD.ORG Tue Jul 19 11:05:56 2005 Return-Path: X-Original-To: current@FreeBSD.org Delivered-To: freebsd-current@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 7A52616A41C; Tue, 19 Jul 2005 11:05:56 +0000 (GMT) (envelope-from michal.mertl@i.cz) Received: from vidle.i.cz (vidle.i.cz [193.179.36.140]) by mx1.FreeBSD.org (Postfix) with ESMTP id 1421A43D45; Tue, 19 Jul 2005 11:05:55 +0000 (GMT) (envelope-from michal.mertl@i.cz) Received: from ns.i.cz (brana.i.cz [193.179.36.134]) by vidle.i.cz (Postfix) with ESMTP id 34ED02E00C; Tue, 19 Jul 2005 13:05:54 +0200 (CEST) Received: from localhost (localhost.i.cz [127.0.0.1]) by ns.i.cz (Postfix) with SMTP id 16FDBF4B04; Tue, 19 Jul 2005 13:05:54 +0200 (CEST) X-AV-Checked: Tue Jul 19 13:05:54 2005 ns.i.cz Received: from genius1.i.cz (genius1.i.cz [192.168.17.49]) by ns.i.cz (Postfix) with ESMTP id 0F568F4B03; Tue, 19 Jul 2005 13:05:54 +0200 (CEST) From: Michal Mertl To: Robert Watson In-Reply-To: <20050719094905.F15510@fledge.watson.org> References: <20050719094905.F15510@fledge.watson.org> Content-Type: text/plain Date: Tue, 19 Jul 2005 13:05:51 +0200 Message-Id: <1121771151.764.42.camel@genius1.i.cz> Mime-Version: 1.0 X-Mailer: Evolution 2.2.3 FreeBSD GNOME Team Port Content-Transfer-Encoding: 7bit X-Mailman-Approved-At: Tue, 19 Jul 2005 12:08:41 +0000 Cc: current@FreeBSD.org Subject: Re: Recent fragility with if_wi, 802.11 adhoc/wep, and Tiger X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 19 Jul 2005 11:05:56 -0000 Robert Watson wrote: > I fairly regularly use 802.11 adhoc with WEP to communicate between my > 6.x/7.x FreeBSD notebook using if_wi, and my Apple PowerBook running Mac > OS X Tiger. A few days ago, when I updated from a June to a July HEAD > revision, this became quite "fragile". Specifically, I often find that > the Mac can't send to the FreeBSD box (ARP fails, etc), and that sometimes > it will give an error when I ask it to re-connect to the ad hoc network. > I find that if I ifconfig down/up if_wi, and likewise turn off and on the > wireless on the PowerBook, it seems to recover. I've not had a chance to > really try and diagnose this at all -- i.e., does tcpdump show packets on > either end, 802.11 state machine, etc. I was wondering if anyone else has > seen this problem, though. Yes, I'm also experiencing similar problems. The problems seem to happen also with different wireless cards and without wep. They were reported by Johann Hugo on 14th in an email titled "ath hostap - clients assosiated, but no comms" too. Another problem with WiFi which Johann reported long time ago is that bridging on atheros (only?) AP works really bad. I get very varying ping response (50 - inf. ms). Sometimes it seems the packets get queued somewhere - after some time I receive several replies at once. I tried to debug it a little but didn't get anywhere. I will try some more. Michal