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Date: Thu, 20 Sep 2018 17:07:01 +0000 From: Haiyang Zhang <haiyangz@...uxonhyperv.com> To: davem@...emloft.net, netdev@...r.kernel.org Cc: haiyangz@...rosoft.com, kys@...rosoft.com, sthemmin@...rosoft.com, olaf@...fle.de, vkuznets@...hat.com, devel@...uxdriverproject.org, linux-kernel@...r.kernel.org Subject: [PATCH net-next,3/3] hv_netvsc: Update document for LRO/RSC support From: Haiyang Zhang <haiyangz@...rosoft.com> Update document for LRO/RSC support, and the command line info to change the setting. Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com> --- 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
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