#ifndef __NET_FOU_H#define __NET_FOU_H #include <linux/skbuff.h> #include <net/flow.h>#include <net/gue.h>#include <net/ip_tunnels.h>#include <net/udp.h> size_t fou_encap_hlen(struct ip_tunnel_encap *e);static size_t gue_encap_hlen(struct ip_tunnel_encap *e); int fou_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,		     u8 *protocol, struct flowi4 *fl4);int gue_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,		     u8 *protocol, struct flowi4 *fl4); #endif