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 #define ISIS_MT_AT_MASK        0x4000
  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 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,
  95                                                   uint16_t mtid);
  96
  97 struct tlv_mt_neighbors *tlvs_lookup_mt_neighbors(struct tlvs *tlvs,
  98                                                   uint16_t mtid);
  99 struct tlv_mt_neighbors *tlvs_get_mt_neighbors(struct tlvs *tlvs,
 100                                                uint16_t mtid);
 101
 102 struct tlv_mt_ipv4_reachs *tlvs_lookup_mt_ipv4_reachs(struct tlvs *tlvs,
 103                                                       uint16_t mtid);
 104 struct tlv_mt_ipv4_reachs *tlvs_get_mt_ipv4_reachs(struct tlvs *tlvs,
 105                                                    uint16_t mtid);
 106
 107 struct tlv_mt_ipv6_reachs *tlvs_lookup_mt_ipv6_reachs(struct tlvs *tlvs,
 108                                                       uint16_t mtid);
 109 struct tlv_mt_ipv6_reachs *tlvs_get_mt_ipv6_reachs(struct tlvs *tlvs,
 110                                                    uint16_t mtid);
 111
 112 struct isis_area_mt_setting *area_lookup_mt_setting(struct isis_area *area,
 113                                                     uint16_t mtid);
 114 struct isis_area_mt_setting *area_new_mt_setting(struct isis_area *area,
 115                                                  uint16_t mtid);
 116 void area_add_mt_setting(struct isis_area *area,
 117                          struct isis_area_mt_setting *setting);
 118
 119 void area_mt_init(struct isis_area *area);
 120 void area_mt_finish(struct isis_area *area);
 121 struct isis_area_mt_setting *area_get_mt_setting(struct isis_area *area,
 122                                                  uint16_t mtid);
 123 int area_write_mt_settings(struct isis_area *area, struct vty *vty);
 124 bool area_is_mt(struct isis_area *area);
 125 struct isis_area_mt_setting **area_mt_settings(struct isis_area *area,
 126                                                unsigned int *mt_count);
 127
 128 struct isis_circuit_mt_setting *
 129 circuit_lookup_mt_setting(struct isis_circuit *circuit, uint16_t mtid);
 130 struct isis_circuit_mt_setting *
 131 circuit_new_mt_setting(struct isis_circuit *circuit, uint16_t mtid);
 132 void circuit_add_mt_setting(struct isis_circuit *circuit,
 133                             struct isis_circuit_mt_setting *setting);
 134 void circuit_mt_init(struct isis_circuit *circuit);
 135 void circuit_mt_finish(struct isis_circuit *circuit);
 136 struct isis_circuit_mt_setting *
 137 circuit_get_mt_setting(struct isis_circuit *circuit, uint16_t mtid);
 138 int circuit_write_mt_settings(struct isis_circuit *circuit, struct vty *vty);
 139 struct isis_circuit_mt_setting **
 140 circuit_mt_settings(struct isis_circuit *circuit, unsigned int *mt_count);
 141 bool tlvs_to_adj_mt_set(struct tlvs *tlvs, bool v4_usable, bool v6_usable,
 142                         struct isis_adjacency *adj);
 143 bool adj_has_mt(struct isis_adjacency *adj, uint16_t mtid);
 144 void adj_mt_finish(struct isis_adjacency *adj);
 145 void tlvs_add_mt_bcast(struct tlvs *tlvs, struct isis_circuit *circuit,
 146                        int level, struct te_is_neigh *neigh);
 147 void tlvs_add_mt_p2p(struct tlvs *tlvs, struct isis_circuit *circuit,
 148                      struct te_is_neigh *neigh);
 149 #endif