Merge branch 'hv_netvsc-Support-LRO-RSC-in-the-vSwitch'

Haiyang Zhang says:

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hv_netvsc: Support LRO/RSC in the vSwitch

The patch adds support for 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.

The patch set also adds ethtool command handler and documents.
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Signed-off-by: David S. Miller <davem@davemloft.net>