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[karo-tx-linux.git] / include / net / netfilter / nf_nat_core.h
1 #ifndef _NF_NAT_CORE_H
2 #define _NF_NAT_CORE_H
3 #include <linux/list.h>
4 #include <net/netfilter/nf_conntrack.h>
5 #include <net/netfilter/nf_nat.h>
6
7 /* This header used to share core functionality between the standalone
8    NAT module, and the compatibility layer's use of NAT for masquerading. */
9
10 extern unsigned int nf_nat_packet(struct nf_conn *ct,
11                                   enum ip_conntrack_info ctinfo,
12                                   unsigned int hooknum,
13                                   struct sk_buff *skb);
14
15 extern int nf_xfrm_me_harder(struct sk_buff *skb, unsigned int family);
16
17 static inline int nf_nat_initialized(struct nf_conn *ct,
18                                      enum nf_nat_manip_type manip)
19 {
20         if (manip == NF_NAT_MANIP_SRC)
21                 return ct->status & IPS_SRC_NAT_DONE;
22         else
23                 return ct->status & IPS_DST_NAT_DONE;
24 }
25
26 struct nlattr;
27
28 extern int
29 (*nfnetlink_parse_nat_setup_hook)(struct nf_conn *ct,
30                                   enum nf_nat_manip_type manip,
31                                   const struct nlattr *attr);
32
33 #endif /* _NF_NAT_CORE_H */