From mboxrd@z Thu Jan 1 00:00:00 1970 From: Denys Fedoryshchenko Subject: Re: [PATCH] bgmac: Remove all offloading features, including GRO. Date: Sat, 16 Sep 2017 03:25:59 +0300 Message-ID: <74955cf749601c3a7a938a6945a976f8@nuclearcat.com> References: <20170915222218.6613-1-rosenp@gmail.com> <252FFED5-906E-4D1B-9E87-679D0CE801D4@gmail.com> <1505520210.29839.7.camel@edumazet-glaptop3.roam.corp.google.com> <1505520638.8507.2.camel@gmail.com> <1505521095.29839.11.camel@edumazet-glaptop3.roam.corp.google.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Cc: rosenp@gmail.com, Florian Fainelli , netdev@vger.kernel.org, zajec5@gmail.com, nbd@nbd.name, netdev-owner@vger.kernel.org To: Eric Dumazet Return-path: Received: from nuclearcat.com ([144.76.183.226]:39844 "EHLO nuclearcat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751201AbdIPA0D (ORCPT ); Fri, 15 Sep 2017 20:26:03 -0400 In-Reply-To: <1505521095.29839.11.camel@edumazet-glaptop3.roam.corp.google.com> Sender: netdev-owner@vger.kernel.org List-ID: On 2017-09-16 03:18, Eric Dumazet wrote: > On Fri, 2017-09-15 at 17:10 -0700, rosenp@gmail.com wrote: >> Ok fair enough. Will only disable GRO in the driver. > > Well, do not even try. > > NETIF_F_SOFT_FEATURES is set by core networking stack in > register_netdevice(), ( commit 212b573f5552c60265da721ff9ce32e3462a2cdd > ) > > Absolutely no driver disables GRO (excepts the ones playing with LRO) I believe also iperf is definitely inconclusive test. Except iperf there is lot of different workloads and configurations, that might have different results.