#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, bool ipv6); void vxlan_sock_release(struct vxlan_sock *vs); int vxlan_xmit_skb(struct vxlan_sock *vs,		   struct rtable *rt, struct sk_buff *skb,		   __be32 src, __be32 dst, __u8 tos, __u8 ttl, __be16 df,		   __be16 src_port, __be16 dst_port, __be32 vni); __be16 vxlan_src_port(__u16 port_min, __u16 port_max, struct sk_buff *skb); /* IP header + UDP + VXLAN + Ethernet header */#define VXLAN_HEADROOM (20 + 8 + 8 + 14)/* IPv6 header + UDP + VXLAN + Ethernet header */#define VXLAN6_HEADROOM (40 + 8 + 8 + 14) #if IS_ENABLED(CONFIG_VXLAN)void vxlan_get_rx_port(struct net_device *netdev);#elsestatic inline void vxlan_get_rx_port(struct net_device *netdev){}#endif#endif