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
  19  * along with FRR; see the file COPYING.  If not, write to the Free
  20  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  21  * 02111-1307, USA.
  22  */
  23 #ifndef ISIS_MT_H
  24 #define ISIS_MT_H
  25
  26 #define ISIS_MT_MASK           0x0fff
  27 #define ISIS_MT_OL_MASK        0x8000
  28
  29 #define ISIS_MT_IPV4_UNICAST   0
  30 #define ISIS_MT_IPV4_MGMT      1
  31 #define ISIS_MT_IPV6_UNICAST   2
  32 #define ISIS_MT_IPV4_MULTICAST 3
  33 #define ISIS_MT_IPV6_MULTICAST 4
  34 #define ISIS_MT_IPV6_MGMT      5
  35
  36 #define ISIS_MT_NAMES \
  37     "<ipv4-unicast" \
  38     "|ipv4-mgmt" \
  39     "|ipv6-unicast" \
  40     "|ipv4-multicast" \
  41     "|ipv6-multicast" \
  42     "|ipv6-mgmt" \
  43     ">"
  44
  45 #define ISIS_MT_DESCRIPTIONS \
  46     "IPv4 unicast topology\n" \
  47     "IPv4 management topology\n" \
  48     "IPv6 unicast topology\n" \
  49     "IPv4 multicast topology\n" \
  50     "IPv6 multicast topology\n" \
  51     "IPv6 management topology\n"
  52
  53 #define ISIS_MT_INFO_FIELDS \
  54   uint16_t mtid;
  55
  56 struct list;
  57
  58 struct isis_area_mt_setting {
  59   ISIS_MT_INFO_FIELDS
  60   bool enabled;
  61   bool overload;
  62 };
  63
  64 struct isis_circuit_mt_setting {
  65   ISIS_MT_INFO_FIELDS
  66   bool enabled;
  67 };
  68
  69 struct tlv_mt_neighbors {
  70   ISIS_MT_INFO_FIELDS
  71   struct list *list;
  72 };
  73
  74 struct tlv_mt_ipv4_reachs {
  75   ISIS_MT_INFO_FIELDS
  76   struct list *list;
  77 };
  78
  79 struct tlv_mt_ipv6_reachs {
  80   ISIS_MT_INFO_FIELDS
  81   struct list *list;
  82 };
  83
  84 const char *isis_mtid2str(uint16_t mtid);
  85 uint16_t isis_str2mtid(const char *name);
  86
  87 struct isis_adjacency;
  88 struct isis_area;
  89 struct isis_circuit;
  90 struct tlvs;
  91 struct te_is_neigh;
  92
  93 uint16_t isis_area_ipv6_topology(struct isis_area *area);
  94
  95 struct mt_router_info* tlvs_lookup_mt_router_info(struct tlvs *tlvs, uint16_t mtid);
  96
  97 struct tlv_mt_neighbors* tlvs_lookup_mt_neighbors(struct tlvs *tlvs, uint16_t mtid);
  98 struct tlv_mt_neighbors* tlvs_get_mt_neighbors(struct tlvs *tlvs, uint16_t mtid);
  99
 100 struct tlv_mt_ipv4_reachs* tlvs_lookup_mt_ipv4_reachs(struct tlvs *tlvs, uint16_t mtid);
 101 struct tlv_mt_ipv4_reachs* tlvs_get_mt_ipv4_reachs(struct tlvs *tlvs, uint16_t mtid);
 102
 103 struct tlv_mt_ipv6_reachs* tlvs_lookup_mt_ipv6_reachs(struct tlvs *tlvs, uint16_t mtid);
 104 struct tlv_mt_ipv6_reachs* tlvs_get_mt_ipv6_reachs(struct tlvs *tlvs, uint16_t mtid);
 105
 106 struct isis_area_mt_setting* area_lookup_mt_setting(struct isis_area *area,
 107                                                     uint16_t mtid);
 108 struct isis_area_mt_setting* area_new_mt_setting(struct isis_area *area,
 109                                                  uint16_t mtid);
 110 void area_add_mt_setting(struct isis_area *area,
 111                          struct isis_area_mt_setting *setting);
 112
 113 void area_mt_init(struct isis_area *area);
 114 void area_mt_finish(struct isis_area *area);
 115 struct isis_area_mt_setting* area_get_mt_setting(struct isis_area *area,
 116                                                  uint16_t mtid);
 117 int area_write_mt_settings(struct isis_area *area, struct vty *vty);
 118 bool area_is_mt(struct isis_area *area);
 119 struct isis_area_mt_setting** area_mt_settings(struct isis_area *area,
 120                                                unsigned int *mt_count);
 121
 122 struct isis_circuit_mt_setting* circuit_lookup_mt_setting(
 123                                                 struct isis_circuit *circuit,
 124                                                 uint16_t mtid);
 125 struct isis_circuit_mt_setting* circuit_new_mt_setting(
 126                                                 struct isis_circuit *circuit,
 127                                                 uint16_t mtid);
 128 void circuit_add_mt_setting(struct isis_circuit *circuit,
 129                             struct isis_circuit_mt_setting *setting);
 130 void circuit_mt_init(struct isis_circuit *circuit);
 131 void circuit_mt_finish(struct isis_circuit *circuit);
 132 struct isis_circuit_mt_setting* circuit_get_mt_setting(
 133                                                 struct isis_circuit *circuit,
 134                                                 uint16_t mtid);
 135 int circuit_write_mt_settings(struct isis_circuit *circuit, struct vty *vty);
 136 struct isis_circuit_mt_setting** circuit_mt_settings(struct isis_circuit *circuit,
 137                                                      unsigned int *mt_count);
 138 bool tlvs_to_adj_mt_set(struct tlvs *tlvs, bool v4_usable, bool v6_usable,
 139                         struct isis_adjacency *adj);
 140 bool adj_has_mt(struct isis_adjacency *adj, uint16_t mtid);
 141 void adj_mt_finish(struct isis_adjacency *adj);
 142 void tlvs_add_mt_bcast(struct tlvs *tlvs, struct isis_circuit *circuit,
 143                        int level, struct te_is_neigh *neigh);
 144 void tlvs_add_mt_p2p(struct tlvs *tlvs, struct isis_circuit *circuit,
 145                      struct te_is_neigh *neigh);
 146 #endif