1#ifndef __NET_VXLAN_H
 2#define __NET_VXLAN_H 1
 3
 4#include <linux/skbuff.h>
 5#include <linux/netdevice.h>
 6#include <linux/udp.h>
 7
 8#define VNI_HASH_BITS	10
 9#define VNI_HASH_SIZE	(1<<VNI_HASH_BITS)
10
11struct vxlan_sock;
12typedef void (vxlan_rcv_t)(struct vxlan_sock *vh, struct sk_buff *skb, __be32 key);
13
14/* per UDP socket information */
15struct vxlan_sock {
16	struct hlist_node hlist;
17	vxlan_rcv_t	 *rcv;
18	void		 *data;
19	struct work_struct del_work;
20	struct socket	 *sock;
21	struct rcu_head	  rcu;
22	struct hlist_head vni_list[VNI_HASH_SIZE];
23	atomic_t	  refcnt;
24	struct udp_offload udp_offloads;
25};
26
27struct vxlan_sock *vxlan_sock_add(struct net *net, __be16 port,
28				  vxlan_rcv_t *rcv, void *data,
29				  bool no_share, bool ipv6);
30
31void vxlan_sock_release(struct vxlan_sock *vs);
32
33int vxlan_xmit_skb(struct vxlan_sock *vs,
34		   struct rtable *rt, struct sk_buff *skb,
35		   __be32 src, __be32 dst, __u8 tos, __u8 ttl, __be16 df,
36		   __be16 src_port, __be16 dst_port, __be32 vni);
37
38__be16 vxlan_src_port(__u16 port_min, __u16 port_max, struct sk_buff *skb);
39
40/* IP header + UDP + VXLAN + Ethernet header */
41#define VXLAN_HEADROOM (20 + 8 + 8 + 14)
42/* IPv6 header + UDP + VXLAN + Ethernet header */
43#define VXLAN6_HEADROOM (40 + 8 + 8 + 14)
44
45#if IS_ENABLED(CONFIG_VXLAN)
46void vxlan_get_rx_port(struct net_device *netdev);
47#else
48static inline void vxlan_get_rx_port(struct net_device *netdev)
49{
50}
51#endif
52#endif