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authorHaiyang Zhang <haiyangz@microsoft.com>2018-09-21 18:20:37 +0000
committerDavid S. Miller <davem@davemloft.net>2018-09-22 17:23:16 -0700
commitf1951c22562a4f5a5c8ba82672352f7f6e5736b2 (patch)
tree1565b962dc2a0fb5b466868022fefa2a48ae10fe /Documentation
parentd6792a5a07479d27147c01ff22041409d5e4ce4c (diff)
hv_netvsc: Update document for LRO/RSC support
Update document for LRO/RSC support, and the command line info to change the setting. Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/networking/netvsc.txt9
1 files changed, 9 insertions, 0 deletions
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