From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.dvmed.net (srv5.dvmed.net [207.36.208.214]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTP id C9264DDECD for ; Wed, 8 Aug 2007 07:46:28 +1000 (EST) Message-ID: <46B8E82E.5080107@garzik.org> Date: Tue, 07 Aug 2007 17:46:22 -0400 From: Jeff Garzik MIME-Version: 1.0 To: Brian King Subject: Re: [PATCH 1/6] ibmveth: Enable TCP checksum offload References: <11864293333377-patch-mail.ibm.com> In-Reply-To: <11864293333377-patch-mail.ibm.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Cc: linuxppc-dev@ozlabs.org, rcjenn@linux.vnet.ibm.com, santil@linux.vnet.ibm.com, netdev@vger.kernel.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Brian King wrote: > This patchset enables TCP checksum offload support for IPV4 > on ibmveth. This completely eliminates the generation and checking of > the checksum for packets that are completely virtual and never > touch a physical network. A simple TCP_STREAM netperf run on > a virtual network with maximum mtu set yielded a ~30% increase > in throughput. This feature is enabled by default on systems that > support it, but can be disabled with a module option. > > Signed-off-by: Brian King ACK, but does not apply to current netdev-2.6.git#upstream-fixes. Request resend after the ibmveth fixes hit mainline (24 hours or so after push, I suppose)