root/include/linux/netfilter/nf_conntrack_proto_gre.h

INCLUDED FROM

   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 */