src/network/netdev/tunnel.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 /***
   5   This file is part of systemd.
   6
   7   Copyright 2014 Tom Gundersen <teg@jklm.no>
   8 ***/
   9
  10 #include "in-addr-util.h"
  11
  12 #include "netdev/netdev.h"
  13
  14 typedef enum Ip6TnlMode {
  15         NETDEV_IP6_TNL_MODE_IP6IP6,
  16         NETDEV_IP6_TNL_MODE_IPIP6,
  17         NETDEV_IP6_TNL_MODE_ANYIP6,
  18         _NETDEV_IP6_TNL_MODE_MAX,
  19         _NETDEV_IP6_TNL_MODE_INVALID = -1,
  20 } Ip6TnlMode;
  21
  22 typedef enum IPv6FlowLabel {
  23         NETDEV_IPV6_FLOWLABEL_INHERIT = 0xFFFFF + 1,
  24         _NETDEV_IPV6_FLOWLABEL_MAX,
  25         _NETDEV_IPV6_FLOWLABEL_INVALID = -1,
  26 } IPv6FlowLabel;
  27
  28 typedef struct Tunnel {
  29         NetDev meta;
  30
  31         uint8_t encap_limit;
  32
  33         int family;
  34         int ipv6_flowlabel;
  35         int allow_localremote;
  36
  37         unsigned ttl;
  38         unsigned tos;
  39         unsigned flags;
  40
  41         uint32_t key;
  42         uint32_t ikey;
  43         uint32_t okey;
  44
  45         union in_addr_union local;
  46         union in_addr_union remote;
  47
  48         Ip6TnlMode ip6tnl_mode;
  49
  50         bool pmtudisc;
  51         bool copy_dscp;
  52         bool independent;
  53 } Tunnel;
  54
  55 DEFINE_NETDEV_CAST(IPIP, Tunnel);
  56 DEFINE_NETDEV_CAST(GRE, Tunnel);
  57 DEFINE_NETDEV_CAST(GRETAP, Tunnel);
  58 DEFINE_NETDEV_CAST(IP6GRE, Tunnel);
  59 DEFINE_NETDEV_CAST(IP6GRETAP, Tunnel);
  60 DEFINE_NETDEV_CAST(SIT, Tunnel);
  61 DEFINE_NETDEV_CAST(VTI, Tunnel);
  62 DEFINE_NETDEV_CAST(VTI6, Tunnel);
  63 DEFINE_NETDEV_CAST(IP6TNL, Tunnel);
  64 extern const NetDevVTable ipip_vtable;
  65 extern const NetDevVTable sit_vtable;
  66 extern const NetDevVTable vti_vtable;
  67 extern const NetDevVTable vti6_vtable;
  68 extern const NetDevVTable gre_vtable;
  69 extern const NetDevVTable gretap_vtable;
  70 extern const NetDevVTable ip6gre_vtable;
  71 extern const NetDevVTable ip6gretap_vtable;
  72 extern const NetDevVTable ip6tnl_vtable;
  73
  74 const char *ip6tnl_mode_to_string(Ip6TnlMode d) _const_;
  75 Ip6TnlMode ip6tnl_mode_from_string(const char *d) _pure_;
  76
  77 int config_parse_ip6tnl_mode(const char *unit, const char *filename,
  78                              unsigned line, const char *section,
  79                              unsigned section_line, const char *lvalue,
  80                              int ltype, const char *rvalue, void *data,
  81                              void *userdata);
  82
  83 int config_parse_tunnel_address(const char *unit,
  84                                 const char *filename,
  85                                 unsigned line,
  86                                 const char *section,
  87                                 unsigned section_line,
  88                                 const char *lvalue,
  89                                 int ltype,
  90                                 const char *rvalue,
  91                                 void *data,
  92                                 void *userdata);
  93
  94 int config_parse_ipv6_flowlabel(const char *unit, const char *filename,
  95                                 unsigned line, const char *section,
  96                                 unsigned section_line, const char *lvalue,
  97                                 int ltype, const char *rvalue, void *data,
  98                                 void *userdata);
  99
 100 int config_parse_encap_limit(const char *unit, const char *filename,
 101                              unsigned line, const char *section,
 102                              unsigned section_line, const char *lvalue,
 103                              int ltype, const char *rvalue, void *data,
 104                              void *userdata);
 105 int config_parse_tunnel_key(const char *unit, const char *filename,
 106                             unsigned line, const char *section,
 107                             unsigned section_line, const char *lvalue,
 108                             int ltype, const char *rvalue, void *data,
 109                             void *userdata);