tree 415b7324a0311b278c86d1c2bc75e316ebe84d78
parent 9e29e21a9bbfb2204bab875f0ef6dbaed66592e7
author Haiyang Zhang <haiyangz@microsoft.com> 1436217097 -0700
committer David S. Miller <davem@davemloft.net> 1436396456 -0700

hv_netvsc: Add support to set MTU reservation from guest side

When packet encapsulation is in use, the MTU needs to be reduced for
headroom reservation.
The existing code takes the updated MTU value only from the host side.
But vSwitch extensions, such as Open vSwitch, require the flexibility
to change the MTU to different values from within a guest during the
lifecycle of a vNIC, when the encapsulation protocol is changed. The
patch supports this kind of MTU changes.

Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>