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openvswitch: Add gre tunnel support.

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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>
This commit is contained in:
Pravin B Shelar
2013-06-17 17:50:33 -07:00
committed by David S. Miller
parent a3e82996a8
commit aa310701e7
8 changed files with 323 additions and 2 deletions
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19
net/openvswitch/vport.c
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@@ -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 @@ void ovs_vport_record_error(struct vport *vport, enum vport_err_type err_type)
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);
}