From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Hutchings Subject: Re: VLAN HW accel, performance advantage? Date: Tue, 3 Sep 2013 14:50:16 +0100 Message-ID: <1378216216.1545.1.camel@bwh-desktop.uk.level5networks.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: To: Joakim Tjernlund Return-path: Received: from webmail.solarflare.com ([12.187.104.25]:45972 "EHLO webmail.solarflare.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932904Ab3ICNuY (ORCPT ); Tue, 3 Sep 2013 09:50:24 -0400 In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: On Tue, 2013-09-03 at 11:05 +0200, Joakim Tjernlund wrote: > I am considering impl. VLAN HW acceleration in Freescales ucc_geth driver > to improve > performance, primarily for bridged interfaces. > I am hoping the community has some insights as to what performance gains > one > could expect? At the moment you need to do VLAN RX offload (or fake it in software) to take advantage of GRO for VLAN-encapsulated packets. Other than that, I don't think it makes a lot of difference in most situations. Ben. -- Ben Hutchings, Staff Engineer, Solarflare Not speaking for my employer; that's the marketing department's job. They asked us to note that Solarflare product names are trademarked.