openvswitch: Add gre tunnel support.
Add gre vport implementation. Most of gre protocol processing
is pushed to gre module. It make use of gre demultiplexer
therefore it can co-exist with linux device based gre tunnels.
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/uapi/linux/openvswitch.h b/include/uapi/linux/openvswitch.h
index b15a445..c55efaa 100644
--- a/include/uapi/linux/openvswitch.h
+++ b/include/uapi/linux/openvswitch.h
@@ -164,6 +164,7 @@
OVS_VPORT_TYPE_UNSPEC,
OVS_VPORT_TYPE_NETDEV, /* network device */
OVS_VPORT_TYPE_INTERNAL, /* network device implemented by datapath */
+ OVS_VPORT_TYPE_GRE, /* GRE tunnel. */
__OVS_VPORT_TYPE_MAX
};