From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [Bugme-new] [Bug 11316] New: severe performance regression for iptables nat routing Date: Fri, 15 Aug 2008 14:56:55 -0700 (PDT) Message-ID: <20080815.145655.154408190.davem@davemloft.net> References: <1218726484.23510.20.camel@2710p.home> <20080815053548.GA6366@gondor.apana.org.au> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: alex.williamson@hp.com, kaber@trash.net, akpm@linux-foundation.org, buytenh@marvell.com, netdev@vger.kernel.org, bugme-daemon@bugzilla.kernel.org To: herbert@gondor.apana.org.au Return-path: Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:54117 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1755423AbYHOV44 (ORCPT ); Fri, 15 Aug 2008 17:56:56 -0400 In-Reply-To: <20080815053548.GA6366@gondor.apana.org.au> Sender: netdev-owner@vger.kernel.org List-ID: From: Herbert Xu Date: Fri, 15 Aug 2008 15:35:48 +1000 > loopback: Drop obsolete ip_summed setting > > Now that the network stack can handle inbound packets with partial > checksums, we should no longer clobber the ip_summed field in the > loopback driver. This is because CHECKSUM_UNNECESSARY implies that > the checksum field is actually valid which is not true for loopback > packets since it's only partial (and thus complemented). > > This allows packets from lo to then be SNATed to an external source > while still preserving the checksum's validity. > > Signed-off-by: Herbert Xu I've applied this one too, let me know if I should not have :)