From owner-freebsd-net@freebsd.org Mon Mar 20 09:40:40 2017 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 93910D0CF81 for ; Mon, 20 Mar 2017 09:40:40 +0000 (UTC) (envelope-from freebsd@omnilan.de) Received: from mx0.gentlemail.de (mx0.gentlemail.de [IPv6:2a00:e10:2800::a130]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 3434818D0 for ; Mon, 20 Mar 2017 09:40:39 +0000 (UTC) (envelope-from freebsd@omnilan.de) Received: from mh0.gentlemail.de (ezra.dcm1.omnilan.net [78.138.80.135]) by mx0.gentlemail.de (8.14.5/8.14.5) with ESMTP id v2K9eaNw074342; Mon, 20 Mar 2017 10:40:36 +0100 (CET) (envelope-from freebsd@omnilan.de) Received: from titan.inop.mo1.omnilan.net (titan.inop.mo1.omnilan.net [IPv6:2001:a60:f0bb:1::3:1]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mh0.gentlemail.de (Postfix) with ESMTPSA id A68BCFF2; Mon, 20 Mar 2017 10:40:36 +0100 (CET) Message-ID: <58CFA394.8070901@omnilan.de> Date: Mon, 20 Mar 2017 10:40:36 +0100 From: Harry Schmalzbauer Organization: OmniLAN User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; de-DE; rv:1.9.2.8) Gecko/20100906 Lightning/1.0b2 Thunderbird/3.1.2 MIME-Version: 1.0 To: Vincenzo Maffione CC: freebsd-net Subject: Re: [panic] netmap(4) and if_lagg(4) References: <58CBCD7A.8060301@omnilan.de> <58CC23F5.7060507@omnilan.de> In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Greylist: ACL 119 matched, not delayed by milter-greylist-4.2.7 (mx0.gentlemail.de [78.138.80.130]); Mon, 20 Mar 2017 10:40:36 +0100 (CET) X-Milter: Spamilter (Reciever: mx0.gentlemail.de; Sender-ip: 78.138.80.135; Sender-helo: mh0.gentlemail.de; ) X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 20 Mar 2017 09:40:40 -0000 Bezüglich Vincenzo Maffione's Nachricht vom 17.03.2017 22:28 (localtime): > Two things here: > > - We pushed an important fix to stable/11 1-2 months ago, that prevents > panic on emulated netmap mode. Maybe you are still getting that panic > because you are using an older stable/11 image, you should check. > - If you are using "software devices" like if_lagg or even vlan > interfaces, netmap and VALE won't help you a lot, because the drivers > are not patched for netmap (and cannot be) Thank you for your explanation. I'm aware of loosing most advantages, but it gives me the possibility to use different MTUs with one switch/bridge. I'll try to provide more info about the panic this week. Like discussed offlist, the panic happend on a machine with the mentioned fix (latest stable). Perhaps this panic can be fixed, especialy for the vlan children. Otoh., I guess it's NIC (igb) related and em/igb overhaul will hit stable/11 eventually. And afaik, theres no native netmap support anymore :-( So probably resources are better spent on that instead of fixing a panic which doesn't seem to affect anyone else than me. Thanks, -harry