isisd/isis_mt.h

   1 /*
   2  * IS-IS Rout(e)ing protocol - Multi Topology Support
   3  *
   4  * Copyright (C) 2017 Christian Franke
   5  *
   6  * This file is part of FreeRangeRouting (FRR)
   7  *
   8  * FRR is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by the
  10  * Free Software Foundation; either version 2, or (at your option) any
  11  * later version.
  12  *
  13  * FRR is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; see the file COPYING; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  21  */
  22 #ifndef ISIS_MT_H
  23 #define ISIS_MT_H
  24
  25 #define ISIS_MT_MASK           0x0fff
  26 #define ISIS_MT_OL_MASK        0x8000
  27
  28 #define ISIS_MT_IPV4_UNICAST   0
  29 #define ISIS_MT_IPV4_MGMT      1
  30 #define ISIS_MT_IPV6_UNICAST   2
  31 #define ISIS_MT_IPV4_MULTICAST 3
  32 #define ISIS_MT_IPV6_MULTICAST 4
  33 #define ISIS_MT_IPV6_MGMT      5
  34
  35 #define ISIS_MT_NAMES \
  36     "<ipv4-unicast" \
  37     "|ipv4-mgmt" \
  38     "|ipv6-unicast" \
  39     "|ipv4-multicast" \
  40     "|ipv6-multicast" \
  41     "|ipv6-mgmt" \
  42     ">"
  43
  44 #define ISIS_MT_DESCRIPTIONS \
  45     "IPv4 unicast topology\n" \
  46     "IPv4 management topology\n" \
  47     "IPv6 unicast topology\n" \
  48     "IPv4 multicast topology\n" \
  49     "IPv6 multicast topology\n" \
  50     "IPv6 management topology\n"
  51
  52 #define ISIS_MT_INFO_FIELDS \
  53   uint16_t mtid;
  54
  55 struct list;
  56
  57 struct isis_area_mt_setting {
  58   ISIS_MT_INFO_FIELDS
  59   bool enabled;
  60   bool overload;
  61 };
  62
  63 struct isis_circuit_mt_setting {
  64   ISIS_MT_INFO_FIELDS
  65   bool enabled;
  66 };
  67
  68 struct tlv_mt_neighbors {
  69   ISIS_MT_INFO_FIELDS
  70   struct list *list;
  71 };
  72
  73 struct tlv_mt_ipv4_reachs {
  74   ISIS_MT_INFO_FIELDS
  75   struct list *list;
  76 };
  77
  78 struct tlv_mt_ipv6_reachs {
  79   ISIS_MT_INFO_FIELDS
  80   struct list *list;
  81 };
  82
  83 const char *isis_mtid2str(uint16_t mtid);
  84 uint16_t isis_str2mtid(const char *name);
  85
  86 struct isis_adjacency;
  87 struct isis_area;
  88 struct isis_circuit;
  89 struct tlvs;
  90 struct te_is_neigh;
  91
  92 uint16_t isis_area_ipv6_topology(struct isis_area *area);
  93
  94 struct mt_router_info* tlvs_lookup_mt_router_info(struct tlvs *tlvs, uint16_t mtid);
  95
  96 struct tlv_mt_neighbors* tlvs_lookup_mt_neighbors(struct tlvs *tlvs, uint16_t mtid);
  97 struct tlv_mt_neighbors* tlvs_get_mt_neighbors(struct tlvs *tlvs, uint16_t mtid);
  98
  99 struct tlv_mt_ipv4_reachs* tlvs_lookup_mt_ipv4_reachs(struct tlvs *tlvs, uint16_t mtid);
 100 struct tlv_mt_ipv4_reachs* tlvs_get_mt_ipv4_reachs(struct tlvs *tlvs, uint16_t mtid);
 101
 102 struct tlv_mt_ipv6_reachs* tlvs_lookup_mt_ipv6_reachs(struct tlvs *tlvs, uint16_t mtid);
 103 struct tlv_mt_ipv6_reachs* tlvs_get_mt_ipv6_reachs(struct tlvs *tlvs, uint16_t mtid);
 104
 105 struct isis_area_mt_setting* area_lookup_mt_setting(struct isis_area *area,
 106                                                     uint16_t mtid);
 107 struct isis_area_mt_setting* area_new_mt_setting(struct isis_area *area,
 108                                                  uint16_t mtid);
 109 void area_add_mt_setting(struct isis_area *area,
 110                          struct isis_area_mt_setting *setting);
 111
 112 void area_mt_init(struct isis_area *area);
 113 void area_mt_finish(struct isis_area *area);
 114 struct isis_area_mt_setting* area_get_mt_setting(struct isis_area *area,
 115                                                  uint16_t mtid);
 116 int area_write_mt_settings(struct isis_area *area, struct vty *vty);
 117 bool area_is_mt(struct isis_area *area);
 118 struct isis_area_mt_setting** area_mt_settings(struct isis_area *area,
 119                                                unsigned int *mt_count);
 120
 121 struct isis_circuit_mt_setting* circuit_lookup_mt_setting(
 122                                                 struct isis_circuit *circuit,
 123                                                 uint16_t mtid);
 124 struct isis_circuit_mt_setting* circuit_new_mt_setting(
 125                                                 struct isis_circuit *circuit,
 126                                                 uint16_t mtid);
 127 void circuit_add_mt_setting(struct isis_circuit *circuit,
 128                             struct isis_circuit_mt_setting *setting);
 129 void circuit_mt_init(struct isis_circuit *circuit);
 130 void circuit_mt_finish(struct isis_circuit *circuit);
 131 struct isis_circuit_mt_setting* circuit_get_mt_setting(
 132                                                 struct isis_circuit *circuit,
 133                                                 uint16_t mtid);
 134 int circuit_write_mt_settings(struct isis_circuit *circuit, struct vty *vty);
 135 struct isis_circuit_mt_setting** circuit_mt_settings(struct isis_circuit *circuit,
 136                                                      unsigned int *mt_count);
 137 bool tlvs_to_adj_mt_set(struct tlvs *tlvs, bool v4_usable, bool v6_usable,
 138                         struct isis_adjacency *adj);
 139 bool adj_has_mt(struct isis_adjacency *adj, uint16_t mtid);
 140 void adj_mt_finish(struct isis_adjacency *adj);
 141 void tlvs_add_mt_bcast(struct tlvs *tlvs, struct isis_circuit *circuit,
 142                        int level, struct te_is_neigh *neigh);
 143 void tlvs_add_mt_p2p(struct tlvs *tlvs, struct isis_circuit *circuit,
 144                      struct te_is_neigh *neigh);
 145 #endif