Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265619AbTFNF0m (ORCPT ); Sat, 14 Jun 2003 01:26:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265620AbTFNF0l (ORCPT ); Sat, 14 Jun 2003 01:26:41 -0400 Received: from pizda.ninka.net ([216.101.162.242]:28860 "EHLO pizda.ninka.net") by vger.kernel.org with ESMTP id S265619AbTFNF0l (ORCPT ); Sat, 14 Jun 2003 01:26:41 -0400 Date: Fri, 13 Jun 2003 22:36:34 -0700 (PDT) Message-Id: <20030613.223634.74746570.davem@redhat.com> To: niv@us.ibm.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: <3EEAAFA6.9080609@us.ibm.com> References: <20030613223841.GB32097@krispykreme> <20030613.154634.74748085.davem@redhat.com> <3EEAAFA6.9080609@us.ibm.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: 689 Lines: 15 From: Nivedita Singhvi Date: Fri, 13 Jun 2003 22:16:22 -0700 Yep, but it really doesn't have too many options (sic pun ;)).. i.e. The max the options can add are 40 bytes, speaking strictly TCP, not IP. This really should fit into one extra cacheline for most architectures, at most, right? It's what the bottom of the header is aligned to, but we build the packet top to bottom not the other way around. - 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/