From owner-freebsd-stable@FreeBSD.ORG Mon May 18 08:27:33 2009 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 9A62E1065674 for ; Mon, 18 May 2009 08:27:33 +0000 (UTC) (envelope-from lev@FreeBSD.org) Received: from ftp.translate.ru (ftp.translate.ru [77.221.156.50]) by mx1.freebsd.org (Postfix) with ESMTP id 51B838FC08 for ; Mon, 18 May 2009 08:27:33 +0000 (UTC) (envelope-from lev@FreeBSD.org) Received: from desktop.home.serebryakov.spb.ru (unknown [89.163.10.141]) (Authenticated sender: lev@serebryakov.spb.ru) by ftp.translate.ru (Postfix) with ESMTPA id 8FC1813DF4A; Thu, 14 May 2009 12:46:45 +0400 (MSD) Date: Thu, 14 May 2009 12:46:30 +0400 From: Lev Serebryakov Organization: FreeBSD X-Priority: 3 (Normal) Message-ID: <1842780877.20090514124631@serebryakov.spb.ru> To: Lars Eggert In-Reply-To: <310A73CC-A32D-4794-BF23-A49715AFCF99@nokia.com> References: <4A09DEF1.2010202@delphij.net> <4A09FDB2.5080307@eyede.com> <20090513004131.GP65350@michelle.cdnetworks.co.kr> <20090514082750.GU65350@michelle.cdnetworks.co.kr> <310A73CC-A32D-4794-BF23-A49715AFCF99@nokia.com> MIME-Version: 1.0 Content-Type: text/plain; charset=windows-1251 Content-Transfer-Encoding: quoted-printable Cc: "pyunyh@gmail.com" , "freebsd-stable@freebsd.org" , "d@delphij.net" , "nigel@eyede.com" Subject: Re[2]: TCP differences in 7.2 vs 7.1 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: lev@FreeBSD.org List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 May 2009 08:27:34 -0000 Hello, Lars. You wrote 14 =EC=E0=FF 2009 =E3., 12:28:43: > Reproducing the issue is as easy as setting net.inet.tcp.tso=3D1. > What's interesting is that I only see the issue on one of the eight em > interfaces. That interface is connected to a D-Link DIR-655 WLAN =20 > router. When I tcpdump on the other interfaces with TSO enabled, I see > no "IP bad-len 0" messages. I have same problem (every one of 100-200 frames) on on-board if_em: em0@pci0:0:25:0: class=3D0x020000 card=3D0x82681043 chip=3D0x10bd808= 6 rev=3D0x02 hdr=3D0x00 vendor =3D 'Intel Corporation' device =3D '82566DM-2 Gigabit Network Connection' class =3D network subclass =3D ethernet --=20 // Black Lion AKA Lev Serebryakov