From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH net-next v3 0/2] veth and GSO maximums Date: Fri, 08 Dec 2017 14:23:23 -0500 (EST) Message-ID: <20171208.142323.2060389926267620856.davem@davemloft.net> References: <20171207234020.18783-1-sthemmin@microsoft.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, sthemmin@microsoft.com To: stephen@networkplumber.org Return-path: Received: from shards.monkeyblade.net ([184.105.139.130]:57850 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752259AbdLHTXZ (ORCPT ); Fri, 8 Dec 2017 14:23:25 -0500 In-Reply-To: <20171207234020.18783-1-sthemmin@microsoft.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Stephen Hemminger Date: Thu, 7 Dec 2017 15:40:18 -0800 > This is the more general way to solving the issue of GSO limits > not being set correctly for containers on Azure. If a GSO packet > is sent to host that exceeds the limit (reported by NDIS), then > the host is forced to do segmentation in software which has noticeable > performance impact. > > The core rtnetlink infrastructure already has the messages and > infrastructure to allow changing gso limits. With an updated iproute2 > the following already works: > # ip li set dev dummy0 gso_max_size 30000 > > These patches are about making it easier with veth. Ok, this is definitely a step forward. Series applied, thanks Stephen.