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/net/openvswitch/vport.c b/net/openvswitch/vport.c
index 413287a..f52dfb9 100644
--- a/net/openvswitch/vport.c
+++ b/net/openvswitch/vport.c
@@ -38,6 +38,10 @@
static const struct vport_ops *vport_ops_list[] = {
&ovs_netdev_vport_ops,
&ovs_internal_vport_ops,
+
+#ifdef CONFIG_NET_IPGRE_DEMUX
+ &ovs_gre_vport_ops,
+#endif
};
/* Protected by RCU read lock for reading, ovs_mutex for writing. */
@@ -404,3 +408,18 @@
spin_unlock(&vport->stats_lock);
}
+
+static void free_vport_rcu(struct rcu_head *rcu)
+{
+ struct vport *vport = container_of(rcu, struct vport, rcu);
+
+ ovs_vport_free(vport);
+}
+
+void ovs_vport_deferred_free(struct vport *vport)
+{
+ if (!vport)
+ return;
+
+ call_rcu(&vport->rcu, free_vport_rcu);
+}