root/include/uapi/linux/netfilter/nf_conntrack_tuple_common.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 #ifndef _NF_CONNTRACK_TUPLE_COMMON_H
   3 #define _NF_CONNTRACK_TUPLE_COMMON_H
   4 
   5 #include <linux/types.h>
   6 #ifndef __KERNEL__
   7 #include <linux/netfilter.h>
   8 #endif
   9 #include <linux/netfilter/nf_conntrack_common.h> /* IP_CT_IS_REPLY */
  10 
  11 enum ip_conntrack_dir {
  12         IP_CT_DIR_ORIGINAL,
  13         IP_CT_DIR_REPLY,
  14         IP_CT_DIR_MAX
  15 };
  16 
  17 /* The protocol-specific manipulable parts of the tuple: always in
  18  * network order
  19  */
  20 union nf_conntrack_man_proto {
  21         /* Add other protocols here. */
  22         __be16 all;
  23 
  24         struct {
  25                 __be16 port;
  26         } tcp;
  27         struct {
  28                 __be16 port;
  29         } udp;
  30         struct {
  31                 __be16 id;
  32         } icmp;
  33         struct {
  34                 __be16 port;
  35         } dccp;
  36         struct {
  37                 __be16 port;
  38         } sctp;
  39         struct {
  40                 __be16 key;     /* GRE key is 32bit, PPtP only uses 16bit */
  41         } gre;
  42 };
  43 
  44 #define CTINFO2DIR(ctinfo) ((ctinfo) >= IP_CT_IS_REPLY ? IP_CT_DIR_REPLY : IP_CT_DIR_ORIGINAL)
  45 
  46 #endif /* _NF_CONNTRACK_TUPLE_COMMON_H */