From owner-freebsd-net@FreeBSD.ORG Tue Aug 12 22:18:40 2008 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 03579106566B for ; Tue, 12 Aug 2008 22:18:40 +0000 (UTC) (envelope-from mailnull@mips.inka.de) Received: from mail-in-01.arcor-online.net (mail-in-01.arcor-online.net [151.189.21.41]) by mx1.freebsd.org (Postfix) with ESMTP id B04FC8FC08 for ; Tue, 12 Aug 2008 22:18:39 +0000 (UTC) (envelope-from mailnull@mips.inka.de) Received: from mail-in-11-z2.arcor-online.net (mail-in-11-z2.arcor-online.net [151.189.8.28]) by mail-in-01.arcor-online.net (Postfix) with ESMTP id D011C104FB3 for ; Wed, 13 Aug 2008 00:18:37 +0200 (CEST) Received: from mail-in-09.arcor-online.net (mail-in-09.arcor-online.net [151.189.21.49]) by mail-in-11-z2.arcor-online.net (Postfix) with ESMTP id BA0CF3465A8 for ; Wed, 13 Aug 2008 00:18:37 +0200 (CEST) Received: from lorvorc.mips.inka.de (dslb-088-067-127-145.pools.arcor-ip.net [88.67.127.145]) by mail-in-09.arcor-online.net (Postfix) with ESMTP id 90C623BE22 for ; Wed, 13 Aug 2008 00:18:37 +0200 (CEST) Received: from lorvorc.mips.inka.de (localhost [127.0.0.1]) by lorvorc.mips.inka.de (8.14.2/8.14.2) with ESMTP id m7CMIa5J094510 for ; Wed, 13 Aug 2008 00:18:36 +0200 (CEST) (envelope-from mailnull@lorvorc.mips.inka.de) Received: (from mailnull@localhost) by lorvorc.mips.inka.de (8.14.2/8.14.2/Submit) id m7CMIaW7094509 for freebsd-net@freebsd.org; Wed, 13 Aug 2008 00:18:36 +0200 (CEST) (envelope-from mailnull) From: naddy@mips.inka.de (Christian Weisgerber) Date: Tue, 12 Aug 2008 22:18:36 +0000 (UTC) Message-ID: References: <20080811021703.GC50045@cdnetworks.co.kr> Originator: naddy@mips.inka.de (Christian Weisgerber) To: freebsd-net@freebsd.org X-Virus-Scanned: ClamAV 0.93.3/8021/Tue Aug 12 21:27:39 2008 on mail-in-09.arcor-online.net X-Virus-Status: Clean Subject: Re: Rx/tx hardware checksumming statistics? X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Aug 2008 22:18:40 -0000 Christian Weisgerber wrote: > OpenBSD's re(4) driver is ported from FreeBSD. [...] > * If VLAN tagging is enabled, no rx checksumming is registered at > all. For the record, this is in fact due to a difference in the OpenBSD driver, i.e., it does not apply to FreeBSD. OpenBSD does not enable VLAN tag stripping in hardware. Without this, the chip apparently does not perform any rx checksumming on tagged frames. -- Christian "naddy" Weisgerber naddy@mips.inka.de