From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: Re: [PATCH net-next] net: ipv6/gre: Add GRO support Date: Sun, 1 Apr 2018 09:35:05 -0700 Message-ID: <8dd7220e-e536-f89b-e5d4-27e57f319e0f@gmail.com> References: <1522588651-28800-1-git-send-email-tariqt@mellanox.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, Eran Ben Elisha , Eric Dumazet To: Tariq Toukan , "David S. Miller" Return-path: Received: from mail-pl0-f54.google.com ([209.85.160.54]:43148 "EHLO mail-pl0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753629AbeDAQfI (ORCPT ); Sun, 1 Apr 2018 12:35:08 -0400 Received: by mail-pl0-f54.google.com with SMTP id f3-v6so2010077plr.10 for ; Sun, 01 Apr 2018 09:35:08 -0700 (PDT) In-Reply-To: <1522588651-28800-1-git-send-email-tariqt@mellanox.com> Content-Language: en-US Sender: netdev-owner@vger.kernel.org List-ID: On 04/01/2018 06:17 AM, Tariq Toukan wrote: > From: Eran Ben Elisha > > Add GRO capability for IPv6 GRE tunnel and ip6erspan tap, via gro_cells > infrastructure. > > Performance testing: 55% higher badwidth. > Measuring bandwidth of 1 thread IPv4 TCP traffic over IPv6 GRE tunnel > while GRO on the physical interface is disabled. > CPU: Intel Xeon E312xx (Sandy Bridge) > NIC: Mellanox Technologies MT27700 Family [ConnectX-4] > Before (GRO not working in tunnel) : 2.47 Gbits/sec > After (GRO working in tunnel) : 3.85 Gbits/sec > > Signed-off-by: Eran Ben Elisha > Signed-off-by: Tariq Toukan > CC: Eric Dumazet > --- Seems good, but why isn't this handled directly in GRO native layer ?