/* SPDX-License-Identifier: GPL-2.0 */#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);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, __be16 *sport, int type);int __gue_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,		       u8 *protocol, __be16 *sport, int type); #endif