Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265622AbTFNFbl (ORCPT ); Sat, 14 Jun 2003 01:31:41 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265623AbTFNFbl (ORCPT ); Sat, 14 Jun 2003 01:31:41 -0400 Received: from pizda.ninka.net ([216.101.162.242]:35516 "EHLO pizda.ninka.net") by vger.kernel.org with ESMTP id S265622AbTFNFbc (ORCPT ); Sat, 14 Jun 2003 01:31:32 -0400 Date: Fri, 13 Jun 2003 22:41:22 -0700 (PDT) Message-Id: <20030613.224122.104034261.davem@redhat.com> To: ltd@cisco.com Cc: anton@samba.org, haveblue@us.ibm.com, hdierks@us.ibm.com, scott.feldman@intel.com, dwg@au1.ibm.com, linux-kernel@vger.kernel.org, milliner@us.ibm.com, ricardoz@us.ibm.com, twichell@us.ibm.com, netdev@oss.sgi.com Subject: Re: e1000 performance hack for ppc64 (Power4) From: "David S. Miller" In-Reply-To: <5.1.0.14.2.20030614114755.036abbb0@mira-sjcm-3.cisco.com> References: <20030613.154634.74748085.davem@redhat.com> <20030613231836.GD32097@krispykreme> <5.1.0.14.2.20030614114755.036abbb0@mira-sjcm-3.cisco.com> X-FalunGong: Information control. X-Mailer: Mew version 2.1 on Emacs 21.1 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 593 Lines: 16 From: Lincoln Dale Date: Sat, 14 Jun 2003 11:52:53 +1000 unless i misunderstand the problem, you can certainly pad the TCP options with NOPs ... You may not mangle packet if it is not your's alone. And every TCP packet is shared with TCP retransmit queue and therefore would need to be copied before being mangled. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/