vxlan: Extend vxlan handlers for openvswitch.

Following patch adds data field to vxlan socket and export
vxlan handler api.
vh->data is required to store private data per vxlan handler.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 31 insertions, 0 deletions

diff --git a/include/net/vxlan.h b/include/net/vxlan.h
new file mode 100644
index 000000000000..43de27585cb0
--- /dev/null
+++ b/include/net/vxlan.h
@@ -0,0 +1,31 @@
+#ifndef __NET_VXLAN_H
+#define __NET_VXLAN_H 1
+
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/udp.h>
+
+#define VNI_HASH_BITS   10
+#define VNI_HASH_SIZE   (1<<VNI_HASH_BITS)
+
+struct vxlan_sock;
+typedef void (vxlan_rcv_t)(struct vxlan_sock *vh, struct sk_buff *skb, __be32 key);
+
+/* per UDP socket information */
+struct vxlan_sock {
+        struct hlist_node hlist;
+        vxlan_rcv_t      *rcv;
+        void             *data;
+        struct work_struct del_work;
+        struct socket    *sock;
+        struct rcu_head   rcu;
+        struct hlist_head vni_list[VNI_HASH_SIZE];
+        atomic_t          refcnt;
+};
+
+struct vxlan_sock *vxlan_sock_add(struct net *net, __be16 port,
+                                  vxlan_rcv_t *rcv, void *data,
+                                  bool no_share);
+
+void vxlan_sock_release(struct vxlan_sock *vs);
+#endif