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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>
This commit is contained in:
Haiyang Zhang 2018-09-21 18:20:37 +00:00 committed by David S. Miller
parent d6792a5a07
commit f1951c2256
1 changed files with 9 additions and 0 deletions
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9
Documentation/networking/netvsc.txt
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@ -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