From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E8625ECE566 for ; Thu, 20 Sep 2018 17:08:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id ACEDC2152A for ; Thu, 20 Sep 2018 17:08:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org ACEDC2152A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxonhyperv.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387867AbeITWxI (ORCPT ); Thu, 20 Sep 2018 18:53:08 -0400 Received: from a2nlsmtp01-05.prod.iad2.secureserver.net ([198.71.225.49]:52416 "EHLO a2nlsmtp01-05.prod.iad2.secureserver.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387802AbeITWxH (ORCPT ); Thu, 20 Sep 2018 18:53:07 -0400 Received: from linuxonhyperv2.linuxonhyperv.com ([107.180.71.197]) by : HOSTING RELAY : with ESMTP id 32QWgzTT1sezk32QWg6OU5; Thu, 20 Sep 2018 10:07:40 -0700 x-originating-ip: 107.180.71.197 Received: from haiyangz by linuxonhyperv2.linuxonhyperv.com with local (Exim 4.91) (envelope-from ) id 1g32QW-0002WN-5R; Thu, 20 Sep 2018 10:07:40 -0700 From: Haiyang Zhang To: davem@davemloft.net, netdev@vger.kernel.org Cc: haiyangz@microsoft.com, kys@microsoft.com, sthemmin@microsoft.com, olaf@aepfle.de, vkuznets@redhat.com, devel@linuxdriverproject.org, linux-kernel@vger.kernel.org Subject: [PATCH net-next,3/3] hv_netvsc: Update document for LRO/RSC support Date: Thu, 20 Sep 2018 17:07:01 +0000 Message-Id: <20180920170701.9574-4-haiyangz@linuxonhyperv.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180920170701.9574-1-haiyangz@linuxonhyperv.com> References: <20180920170701.9574-1-haiyangz@linuxonhyperv.com> Reply-To: haiyangz@microsoft.com X-CMAE-Envelope: MS4wfDIPtArKT8nzsEqb52WbfTrtBrwIQ6ec1/xcDfJfRFrzMCfORj+xANPtva5vvmyHkVg7EluQp6kSrDLvhTDS7a+tRGW312GAtjJ8pkxLsm9bHnCf91iw s8zXp4oEU87vktSIKeMfoM5120dKk5I/YgMr65+bP7wc7z1MQnoY2JuHqr6oDOzeqXP5LSnRUgw0RYquikxjGfB4EanbwLSRYdlY/M6bvJlrKstUdaESyjFo 7O1r27BkOVJV2eV5sjl6SgBZsGdzI1x3AMjYIZ5YYlrqCmdx1kM8ohv8hO80stXRf+BVEmvkz/73Akd9mIjy5kxvwF+dDmDoFhk68oFJNYAOZ5Yw6aXUzd3I 7NESPyq6QRzLTl4dSQKV74zbRFGawCpqwGsTmIb6bIwpOHWVi1xcvEuvFwKHXTW7ybtjJYL1SiOkLjGewZ+MWGvLduAh8wA9auMFgfvoesN7m+syOehDEU+p 9sR4d2TFKbRItOXSa1aNDx9NwntM50D6BH5F9w== Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Haiyang Zhang Update document for LRO/RSC support, and the command line info to change the setting. Signed-off-by: Haiyang Zhang --- Documentation/networking/netvsc.txt | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/Documentation/networking/netvsc.txt b/Documentation/networking/netvsc.txt index 92f5b31392fa..3bfa635bbbd5 100644 --- a/Documentation/networking/netvsc.txt +++ b/Documentation/networking/netvsc.txt @@ -45,6 +45,15 @@ Features like packets and significantly reduces CPU usage under heavy Rx load. + Large Receive Offload (LRO), or Receive Side Coalescing (RSC) + ------------------------------------------------------------- + The driver supports LRO/RSC in the vSwitch feature. It reduces the per packet + processing overhead by coalescing multiple TCP segments when possible. The + feature is enabled by default on VMs running on Windows Server 2019 and + later. It may be changed by ethtool command: + ethtool -K eth0 lro on + ethtool -K eth0 lro off + SR-IOV support -------------- Hyper-V supports SR-IOV as a hardware acceleration option. If SR-IOV -- 2.18.0