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   systemd is free software; you can redistribute it and/or modify it
  10   under the terms of the GNU Lesser General Public License as published by
  11   the Free Software Foundation; either version 2.1 of the License, or
  12   (at your option) any later version.
  13
  14   systemd is distributed in the hope that it will be useful, but
  15   WITHOUT ANY WARRANTY; without even the implied warranty of
  16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17   Lesser General Public License for more details.
  18
  19   You should have received a copy of the GNU Lesser General Public License
  20   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  21 ***/
  22
  23 #include "in-addr-util.h"
  24
  25 #include "netdev/netdev.h"
  26
  27 typedef enum Ip6TnlMode {
  28         NETDEV_IP6_TNL_MODE_IP6IP6,
  29         NETDEV_IP6_TNL_MODE_IPIP6,
  30         NETDEV_IP6_TNL_MODE_ANYIP6,
  31         _NETDEV_IP6_TNL_MODE_MAX,
  32         _NETDEV_IP6_TNL_MODE_INVALID = -1,
  33 } Ip6TnlMode;
  34
  35 typedef enum IPv6FlowLabel {
  36         NETDEV_IPV6_FLOWLABEL_INHERIT = 0xFFFFF + 1,
  37         _NETDEV_IPV6_FLOWLABEL_MAX,
  38         _NETDEV_IPV6_FLOWLABEL_INVALID = -1,
  39 } IPv6FlowLabel;
  40
  41 typedef struct Tunnel {
  42         NetDev meta;
  43
  44         uint8_t encap_limit;
  45
  46         int family;
  47         int ipv6_flowlabel;
  48
  49         unsigned ttl;
  50         unsigned tos;
  51         unsigned flags;
  52
  53         uint32_t key;
  54         uint32_t ikey;
  55         uint32_t okey;
  56
  57         union in_addr_union local;
  58         union in_addr_union remote;
  59
  60         Ip6TnlMode ip6tnl_mode;
  61
  62         bool pmtudisc;
  63         bool copy_dscp;
  64         bool independent;
  65 } Tunnel;
  66
  67 DEFINE_NETDEV_CAST(IPIP, Tunnel);
  68 DEFINE_NETDEV_CAST(GRE, Tunnel);
  69 DEFINE_NETDEV_CAST(GRETAP, Tunnel);
  70 DEFINE_NETDEV_CAST(IP6GRE, Tunnel);
  71 DEFINE_NETDEV_CAST(IP6GRETAP, Tunnel);
  72 DEFINE_NETDEV_CAST(SIT, Tunnel);
  73 DEFINE_NETDEV_CAST(VTI, Tunnel);
  74 DEFINE_NETDEV_CAST(VTI6, Tunnel);
  75 DEFINE_NETDEV_CAST(IP6TNL, Tunnel);
  76 extern const NetDevVTable ipip_vtable;
  77 extern const NetDevVTable sit_vtable;
  78 extern const NetDevVTable vti_vtable;
  79 extern const NetDevVTable vti6_vtable;
  80 extern const NetDevVTable gre_vtable;
  81 extern const NetDevVTable gretap_vtable;
  82 extern const NetDevVTable ip6gre_vtable;
  83 extern const NetDevVTable ip6gretap_vtable;
  84 extern const NetDevVTable ip6tnl_vtable;
  85
  86 const char *ip6tnl_mode_to_string(Ip6TnlMode d) _const_;
  87 Ip6TnlMode ip6tnl_mode_from_string(const char *d) _pure_;
  88
  89 int config_parse_ip6tnl_mode(const char *unit, const char *filename,
  90                              unsigned line, const char *section,
  91                              unsigned section_line, const char *lvalue,
  92                              int ltype, const char *rvalue, void *data,
  93                              void *userdata);
  94
  95 int config_parse_tunnel_address(const char *unit,
  96                                 const char *filename,
  97                                 unsigned line,
  98                                 const char *section,
  99                                 unsigned section_line,
 100                                 const char *lvalue,
 101                                 int ltype,
 102                                 const char *rvalue,
 103                                 void *data,
 104                                 void *userdata);
 105
 106 int config_parse_ipv6_flowlabel(const char *unit, const char *filename,
 107                                 unsigned line, const char *section,
 108                                 unsigned section_line, const char *lvalue,
 109                                 int ltype, const char *rvalue, void *data,
 110                                 void *userdata);
 111
 112 int config_parse_encap_limit(const char *unit, const char *filename,
 113                              unsigned line, const char *section,
 114                              unsigned section_line, const char *lvalue,
 115                              int ltype, const char *rvalue, void *data,
 116                              void *userdata);
 117 int config_parse_tunnel_key(const char *unit, const char *filename,
 118                             unsigned line, const char *section,
 119                             unsigned section_line, const char *lvalue,
 120                             int ltype, const char *rvalue, void *data,
 121                             void *userdata);