include/net/netfilter/nf_nat_core.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _NF_NAT_CORE_H
   3 #define _NF_NAT_CORE_H
   4 #include <linux/list.h>
   5 #include <net/netfilter/nf_conntrack.h>
   6 #include <net/netfilter/nf_nat.h>
   7
   8 /* This header used to share core functionality between the standalone
   9    NAT module, and the compatibility layer's use of NAT for masquerading. */
  10
  11 unsigned int nf_nat_packet(struct nf_conn *ct, enum ip_conntrack_info ctinfo,
  12                            unsigned int hooknum, struct sk_buff *skb);
  13
  14 int nf_xfrm_me_harder(struct net *net, struct sk_buff *skb, unsigned int family);
  15
  16 static inline int nf_nat_initialized(struct nf_conn *ct,
  17                                      enum nf_nat_manip_type manip)
  18 {
  19         if (manip == NF_NAT_MANIP_SRC)
  20                 return ct->status & IPS_SRC_NAT_DONE;
  21         else
  22                 return ct->status & IPS_DST_NAT_DONE;
  23 }
  24
  25 struct nlattr;
  26
  27 extern int
  28 (*nfnetlink_parse_nat_setup_hook)(struct nf_conn *ct,
  29                                   enum nf_nat_manip_type manip,
  30                                   const struct nlattr *attr);
  31
  32 #endif /* _NF_NAT_CORE_H */