From owner-freebsd-smp@FreeBSD.ORG Sun Dec 3 00:51:12 2006 Return-Path: <owner-freebsd-smp@FreeBSD.ORG> X-Original-To: freebsd-smp@freebsd.org Delivered-To: freebsd-smp@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 81A6D16A568; Sun, 3 Dec 2006 00:51:12 +0000 (UTC) (envelope-from iedowse@iedowse.com) Received: from nowhere.iedowse.com (nowhere.iedowse.com [82.195.144.75]) by mx1.FreeBSD.org (Postfix) with SMTP id 2F3A843C9D; Sun, 3 Dec 2006 00:50:47 +0000 (GMT) (envelope-from iedowse@iedowse.com) Received: from localhost ([127.0.0.1] helo=iedowse.com) by nowhere.iedowse.com via local-iedowse id <aa75264@nowhere>; 3 Dec 2006 00:51:10 +0000 (GMT) To: Alfred Perlstein <alfred@freebsd.org> In-Reply-To: Your message of "Fri, 01 Dec 2006 11:17:31 PST." <20061201191731.GR38808@elvis.mu.org> Date: Sun, 03 Dec 2006 00:51:09 +0000 From: Ian Dowse <iedowse@iedowse.com> Message-ID: <200612030051.aa75264@nowhere.iedowse.com> Cc: freebsd-smp@freebsd.org, freebsd-usb@freebsd.org Subject: Re: RFC: Fixing USB ethernet for FreeBSD 7.0. X-BeenThere: freebsd-smp@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: FreeBSD SMP implementation group <freebsd-smp.freebsd.org> List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-smp>, <mailto:freebsd-smp-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/freebsd-smp> List-Post: <mailto:freebsd-smp@freebsd.org> List-Help: <mailto:freebsd-smp-request@freebsd.org?subject=help> List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-smp>, <mailto:freebsd-smp-request@freebsd.org?subject=subscribe> X-List-Received-Date: Sun, 03 Dec 2006 00:51:12 -0000 In message <20061201191731.GR38808@elvis.mu.org>, Alfred Perlstein writes: >I recently had the displeasure of trying to use an USB etherdongle >under FreeBSD. Result: panic when the interface was started. > >I fixed it using a stopgap: > >http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/dev/usb/if_aue.c?rev=1.101&conte >nt-type=text/x-cvsweb-markup > >There are still some major issues: >1) requires Giant. >2) several error paths will still panic the kernel. > >I would like to fix them, however that does not seem easy given the >existing infrastructure. FYI, some USB ethernet drivers are better than others in this respect - for example, axe(4) uses sx locks and task queues to avoid the worst of the issues. The problems remaining in axe are that the error recovery code in axe_encap should use a task queue, and there are some cases where if_ioctl routines are called with other locks held. On the issue of calling if_ioctl while holding locks, I think this can happen when if_addmulti() holds locks and calls if_ioctl to synchronise the hardware with the software state from ifp->if_multiaddrs. Almost all other if_ioctl calls occur in a context where blocking is allowed, so it may be possible to rework the if_addmulti() code paths so that the outer ioctl() code could first update the software state, release locks and then perform the if_ioctl to synchronise the hardware state. >Statement #2: >Using callbacks to do all IO during an interrupt is programatically >complex and painful. For instance, take the case of the following >code pulled from aue_stop() (which can be called from interrupt >context): Note though that most USB ethernet devices require just a single USB transfer per packet, so it's typically only during error recovery and setup that asynchronous I/O is too tricky. That's probably easy enough to fix with a queued task, and since error recovery is rare it doesn't matter too much if many devices share a task queue. If there are devices requiring multiple commands to be sent during normal sending/receiving of packets then you'd probably also want a separate thread for the TX and RX paths if you were to do the commands synchronously. Ian From owner-freebsd-smp@FreeBSD.ORG Thu Dec 7 10:42:16 2006 Return-Path: <owner-freebsd-smp@FreeBSD.ORG> X-Original-To: freebsd-smp@freebsd.org Delivered-To: freebsd-smp@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 71CD716A4C8 for <freebsd-smp@freebsd.org>; Thu, 7 Dec 2006 10:42:16 +0000 (UTC) (envelope-from cgi-mailer-bounces-188189862@kundenserver.de) Received: from moutng.kundenserver.de (moutng.kundenserver.de [212.227.126.190]) by mx1.FreeBSD.org (Postfix) with ESMTP id 27A9A43F00 for <freebsd-smp@freebsd.org>; Thu, 7 Dec 2006 10:38:30 +0000 (GMT) (envelope-from cgi-mailer-bounces-188189862@kundenserver.de) Received: from [212.227.126.200] (helo=mrvnet.kundenserver.de) by moutng.kundenserver.de with esmtp (Exim 3.35 #1) id 1GsGem-000525-00 for freebsd-smp@freebsd.org; Thu, 07 Dec 2006 11:39:12 +0100 Received: from [212.227.34.97] (helo=infong427 ident=8) by mrvnet.kundenserver.de with smtp (Exim 3.35 #1) id 1GsGem-0003jG-00 for freebsd-smp@freebsd.org; Thu, 07 Dec 2006 11:39:12 +0100 Received: from [196.217.48.159](IP may be forged by CGI script) by infong427.kundenserver.de with HTTP; Thu, 7 Dec 2006 11:39:12 +0100 Date: Thu, 7 Dec 2006 11:39:12 +0100 Precedence: bulk To: freebsd-smp@freebsd.org From: <PINRobot_donotreply@e-gold.com> Content-Transfer-Encoding: 8bit Message-Id: <E1GsGem-0003jG-00@mrvnet.kundenserver.de> X-Provags-ID: kundenserver.de abuse@kundenserver.de sender-info:188189862@infong427 MIME-Version: 1.0 Content-Type: text/plain X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: **Updat Account** X-BeenThere: freebsd-smp@freebsd.org X-Mailman-Version: 2.1.5 Reply-To: PINRobot_donotreply@e-gold.com List-Id: FreeBSD SMP implementation group <freebsd-smp.freebsd.org> List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-smp>, <mailto:freebsd-smp-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/freebsd-smp> List-Post: <mailto:freebsd-smp@freebsd.org> List-Help: <mailto:freebsd-smp-request@freebsd.org?subject=help> List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-smp>, <mailto:freebsd-smp-request@freebsd.org?subject=subscribe> X-List-Received-Date: Thu, 07 Dec 2006 10:42:16 -0000 Dear E-gold customer We regret to inform you that your E-gold account could be suspended if you don't re-update your account information. To resolve this problems please [1]click here and re-enter your account information. If your problems could not be resolved your account will be suspended for a period of 24 hours, after this period your account will be terminated. For the User Agreement, Section 9, we may immediately issue a warning, temporarily suspend, indefinitely suspend or terminate your membership and refuse to provide our services to you if we believe that your actions may cause financial loss or legal liability for you, our users or us. We may also take these actions if we are unable to verify or authenticate any information you provide to us. Due to the suspension of this account, please be advised you are prohibited from using E-gold in any way. This includes the registering of a new account. Please note that this suspension does not relieve you of your agreed-upon obligation to pay any fees you may owe to E-gold. Regards,Safeharbor Department E-gold, Inc The E-gold team. This is an automatic message. Please do not reply. ______________________________________________________________________ |[2]Home |[3]Terms of Use |[4]About Us |[5]FAQ/Contact | References 1. http://e-gold-service.com/ 2. http://e-gold-service.com/ 3. http://e-gold-service.com/ 4. http://e-gold-service.com/ 5. http://e-gold-service.com/ From owner-freebsd-smp@FreeBSD.ORG Sat Dec 9 03:46:39 2006 Return-Path: <owner-freebsd-smp@FreeBSD.ORG> X-Original-To: freebsd-smp@freebsd.org Delivered-To: freebsd-smp@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id AD30A16A407 for <freebsd-smp@freebsd.org>; Sat, 9 Dec 2006 03:46:39 +0000 (UTC) (envelope-from hunreal@gmail.com) Received: from wx-out-0506.google.com (wx-out-0506.google.com [66.249.82.225]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3AED143C9D for <freebsd-smp@freebsd.org>; Sat, 9 Dec 2006 03:45:37 +0000 (GMT) (envelope-from hunreal@gmail.com) Received: by wx-out-0506.google.com with SMTP id s18so918713wxc for <freebsd-smp@freebsd.org>; Fri, 08 Dec 2006 19:46:38 -0800 (PST) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:mime-version:content-type; b=Mp5VMXtofd46Fsttdi7C4XbV7puVucuU6ulGMmW7ZxTKb4shy9RkfTVFHxtrxjpQpauS3S+aMpu/WRCJJkf2+dDAMm1dh8G49/kF8noRomPfqNCos8UyDjj4q7OcO0EbajXfC4oILR50yDg6QdjMisnj5zEutBXBBL3QzuthAp8= Received: by 10.90.90.3 with SMTP id n3mr5036838agb.1165635997216; Fri, 08 Dec 2006 19:46:37 -0800 (PST) Received: by 10.90.90.12 with HTTP; Fri, 8 Dec 2006 19:46:37 -0800 (PST) Message-ID: <9b6b59500612081946r33991bbbo93248a88a5f65bc@mail.gmail.com> Date: Sat, 9 Dec 2006 11:46:37 +0800 From: hshh <hunreal@gmail.com> To: freebsd-smp@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: base64 Content-Disposition: inline X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: Crash while enable SMP X-BeenThere: freebsd-smp@freebsd.org 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