1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _CONNTRACK_PROTO_GRE_H 3#define _CONNTRACK_PROTO_GRE_H 4#include <asm/byteorder.h> 5#include <net/gre.h> 6#include <net/pptp.h> 7 8struct nf_ct_gre { 9 unsigned int stream_timeout; 10 unsigned int timeout; 11}; 12 13#include <net/netfilter/nf_conntrack_tuple.h> 14 15struct nf_conn; 16 17/* structure for original <-> reply keymap */ 18struct nf_ct_gre_keymap { 19 struct list_head list; 20 struct nf_conntrack_tuple tuple; 21 struct rcu_head rcu; 22}; 23 24/* add new tuple->key_reply pair to keymap */ 25int nf_ct_gre_keymap_add(struct nf_conn *ct, enum ip_conntrack_dir dir, 26 struct nf_conntrack_tuple *t); 27 28/* delete keymap entries */ 29void nf_ct_gre_keymap_destroy(struct nf_conn *ct); 30 31bool gre_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff, 32 struct net *net, struct nf_conntrack_tuple *tuple); 33#endif /* _CONNTRACK_PROTO_GRE_H */ 34