From owner-freebsd-current@FreeBSD.ORG Wed Jul 20 04:45:41 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 514CF16A41F; Wed, 20 Jul 2005 04:45:41 +0000 (GMT) (envelope-from sam@errno.com) Received: from ebb.errno.com (ebb.errno.com [66.127.85.87]) by mx1.FreeBSD.org (Postfix) with ESMTP id E81A343D64; Wed, 20 Jul 2005 04:45:38 +0000 (GMT) (envelope-from sam@errno.com) Received: from [66.127.85.94] ([66.127.85.94]) (authenticated bits=0) by ebb.errno.com (8.12.9/8.12.6) with ESMTP id j6K4jZms027142 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 19 Jul 2005 21:45:37 -0700 (PDT) (envelope-from sam@errno.com) Message-ID: <42DDD710.4030503@errno.com> Date: Tue, 19 Jul 2005 21:46:08 -0700 From: Sam Leffler Organization: Errno Consulting User-Agent: Mozilla Thunderbird 1.0.2 (Macintosh/20050317) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Michal Mertl References: <20050719094905.F15510@fledge.watson.org> <1121771151.764.42.camel@genius1.i.cz> In-Reply-To: <1121771151.764.42.camel@genius1.i.cz> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Robert Watson , 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: Wed, 20 Jul 2005 04:45:41 -0000 Michal Mertl wrote: > 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 routinely bridge ath cards (a wide variety) with bge using bridge and see no problems. I get ~36 Mb/s in 11a w/ superg features and ~28 Mb/s w/ basic stuff (what you find in RELENG_6). ping times are what you'd expect (<1ms). Sam