From mboxrd@z Thu Jan 1 00:00:00 1970 From: Haiyang Zhang 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> References: <20180920170701.9574-1-haiyangz@linuxonhyperv.com> Reply-To: haiyangz@microsoft.com Cc: haiyangz@microsoft.com, kys@microsoft.com, sthemmin@microsoft.com, olaf@aepfle.de, vkuznets@redhat.com, devel@linuxdriverproject.org, linux-kernel@vger.kernel.org To: davem@davemloft.net, netdev@vger.kernel.org Return-path: In-Reply-To: <20180920170701.9574-1-haiyangz@linuxonhyperv.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.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