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 8 struct nf_ct_gre { 9 unsigned int stream_timeout; 10 unsigned int timeout; 11 }; 12 13 #include <net/netfilter/nf_conntrack_tuple.h> 14 15 struct nf_conn; 16 17 /* structure for original <-> reply keymap */ 18 struct 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 */ 25 int nf_ct_gre_keymap_add(struct nf_conn *ct, enum ip_conntrack_dir dir, 26 struct nf_conntrack_tuple *t); 27 28 void nf_ct_gre_keymap_flush(struct net *net); 29 /* delete keymap entries */ 30 void nf_ct_gre_keymap_destroy(struct nf_conn *ct); 31 32 bool gre_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff, 33 struct net *net, struct nf_conntrack_tuple *tuple); 34 #endif /* _CONNTRACK_PROTO_GRE_H */ 35