From owner-freebsd-stable@FreeBSD.ORG Thu Apr 26 20:19:09 2012 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 7AF8D1065674 for ; Thu, 26 Apr 2012 20:19:09 +0000 (UTC) (envelope-from andrey@zonov.org) Received: from mail-lb0-f182.google.com (mail-lb0-f182.google.com [209.85.217.182]) by mx1.freebsd.org (Postfix) with ESMTP id EA8468FC1B for ; Thu, 26 Apr 2012 20:19:08 +0000 (UTC) Received: by lbbgm6 with SMTP id gm6so13431lbb.13 for ; Thu, 26 Apr 2012 13:19:07 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding :x-gm-message-state; bh=epCDstfQtk+KyvodrHwGQLYMgFrbOr0aa1V3Z3emUsg=; b=c2auBMkyu211/694gAFMeZ56fUG9TMbnkBWqcpD7n7PjZofTq3cVdaWCrxdAhz64Y2 HnlYXa5rPi7E4BfNeX366Sxh9Od+9V3s2Fj+YWHqx2ShExIxjpArBT9JKesP72vJGt70 X1UaSwKKUh52Tmewzaeuc6E0JuV66LrQB4A1x6rnR5BAq6Sld/AiwuWIAsDKTnfiqiFL /T6tYKOMbtPGdhj3VWLpxstC7EvryRvD8qrz2/js5c4/j8AJqxQgFmAOAuA0XN4/b/dN hnkjmJi3kNdWwpCtXCS7VTyunHuT5o/hGVepTThdP+VL5hYiC/9UKT8ojfat9rkkZXpE /8Mg== Received: by 10.112.23.40 with SMTP id j8mr4003420lbf.44.1335471547653; Thu, 26 Apr 2012 13:19:07 -0700 (PDT) Received: from zont-osx.local (ppp95-165-142-116.pppoe.spdop.ru. [95.165.142.116]) by mx.google.com with ESMTPS id oy17sm4129518lab.7.2012.04.26.13.19.06 (version=SSLv3 cipher=OTHER); Thu, 26 Apr 2012 13:19:07 -0700 (PDT) Message-ID: <4F99ADB9.2000209@zonov.org> Date: Fri, 27 Apr 2012 00:19:05 +0400 From: Andrey Zonov User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:11.0) Gecko/20120327 Thunderbird/11.0.1 MIME-Version: 1.0 To: Mark Felder References: <4F985374.9080807@zonov.org> In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Gm-Message-State: ALoCoQkwDxyFWiNYkFMi6ZRxUOrvJ2QVAplpb70GNfMNS48IhJNJy9BL+aQR9XbE9q1gzQumM3aw Cc: freebsd-stable@freebsd.org Subject: Re: FreeBSD 9.0 - BCE_JUMBO_HDRSPLIT kernel option for bce device still needed? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 26 Apr 2012 20:19:09 -0000 On 4/26/12 6:02 PM, Mark Felder wrote: > On Wed, 25 Apr 2012 14:41:40 -0500, Andrey Zonov wrote: > >> >> Hi, >> >> There is no such option in the kernel anymore, instead there is >> hw.bce.hdr_split tunable which is turn on by default. >> > > I've tried the kernel option and playing with this tunable on a pair of > HP DL380s and had to give up. I was building ZFS SAN heads and was going > to have 2x bce and 2x igb ethernets each LACP and Jumbo Frames. The bce > devices simply would not work with jumbo frames. The packets disappeared > into the great ether or something. Our switches never saw any being > sent, and receiving jumbo frames showed absolutely no traffic via tcpdump. > > After dropping in a quad Intel NIC (4x igb) everything worked as expected. > > The bce hardware or driver is sketchy and I'd avoid it. Please try this [1] if you can. [1] http://lists.freebsd.org/pipermail/freebsd-net/2012-April/032157.html -- Andrey Zonov