include/linux/netfilter_ipv4/nf_nat.h

   1 #ifndef _LINUX_NF_NAT_H
   2 #define _LINUX_NF_NAT_H
   3
   4 #include <linux/types.h>
   5
   6 #define IP_NAT_RANGE_MAP_IPS 1
   7 #define IP_NAT_RANGE_PROTO_SPECIFIED 2
   8 #define IP_NAT_RANGE_PROTO_RANDOM 4
   9 #define IP_NAT_RANGE_PERSISTENT 8
  10
  11 /* The protocol-specific manipulable parts of the tuple. */
  12 union nf_conntrack_man_proto {
  13         /* Add other protocols here. */
  14         __be16 all;
  15
  16         struct {
  17                 __be16 port;
  18         } tcp;
  19         struct {
  20                 __be16 port;
  21         } udp;
  22         struct {
  23                 __be16 id;
  24         } icmp;
  25         struct {
  26                 __be16 port;
  27         } dccp;
  28         struct {
  29                 __be16 port;
  30         } sctp;
  31         struct {
  32                 __be16 key;     /* GRE key is 32bit, PPtP only uses 16bit */
  33         } gre;
  34 };
  35
  36 /* Single range specification. */
  37 struct nf_nat_range {
  38         /* Set to OR of flags above. */
  39         unsigned int flags;
  40
  41         /* Inclusive: network order. */
  42         __be32 min_ip, max_ip;
  43
  44         /* Inclusive: network order */
  45         union nf_conntrack_man_proto min, max;
  46 };
  47
  48 /* For backwards compat: don't use in modern code. */
  49 struct nf_nat_multi_range_compat {
  50         unsigned int rangesize; /* Must be 1. */
  51
  52         /* hangs off end. */
  53         struct nf_nat_range range[1];
  54 };
  55
  56 #define nf_nat_multi_range nf_nat_multi_range_compat
  57
  58 #endif