nf_conntrack_proto_gre.h

 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 */