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 uint16_t mtid;
  53
  54 struct list;
  55
  56 struct isis_area_mt_setting {
  57         ISIS_MT_INFO_FIELDS
  58         bool enabled;
  59         bool overload;
  60 };
  61
  62 struct isis_circuit_mt_setting {
  63         ISIS_MT_INFO_FIELDS
  64         bool enabled;
  65 };
  66
  67 struct tlv_mt_neighbors {
  68         ISIS_MT_INFO_FIELDS
  69         struct list *list;
  70 };
  71
  72 struct tlv_mt_ipv4_reachs {
  73         ISIS_MT_INFO_FIELDS
  74         struct list *list;
  75 };
  76
  77 struct tlv_mt_ipv6_reachs {
  78         ISIS_MT_INFO_FIELDS
  79         struct list *list;
  80 };
  81
  82 const char *isis_mtid2str(uint16_t mtid);
  83 uint16_t isis_str2mtid(const char *name);
  84
  85 struct isis_adjacency;
  86 struct isis_area;
  87 struct isis_circuit;
  88 struct tlvs;
  89 struct te_is_neigh;
  90
  91 uint16_t isis_area_ipv6_topology(struct isis_area *area);
  92
  93 struct mt_router_info *tlvs_lookup_mt_router_info(struct tlvs *tlvs,
  94                                                   uint16_t mtid);
  95
  96 struct tlv_mt_neighbors *tlvs_lookup_mt_neighbors(struct tlvs *tlvs,
  97                                                   uint16_t mtid);
  98 struct tlv_mt_neighbors *tlvs_get_mt_neighbors(struct tlvs *tlvs,
  99                                                uint16_t mtid);
 100
 101 struct tlv_mt_ipv4_reachs *tlvs_lookup_mt_ipv4_reachs(struct tlvs *tlvs,
 102                                                       uint16_t mtid);
 103 struct tlv_mt_ipv4_reachs *tlvs_get_mt_ipv4_reachs(struct tlvs *tlvs,
 104                                                    uint16_t mtid);
 105
 106 struct tlv_mt_ipv6_reachs *tlvs_lookup_mt_ipv6_reachs(struct tlvs *tlvs,
 107                                                       uint16_t mtid);
 108 struct tlv_mt_ipv6_reachs *tlvs_get_mt_ipv6_reachs(struct tlvs *tlvs,
 109                                                    uint16_t mtid);
 110
 111 struct isis_area_mt_setting *area_lookup_mt_setting(struct isis_area *area,
 112                                                     uint16_t mtid);
 113 struct isis_area_mt_setting *area_new_mt_setting(struct isis_area *area,
 114                                                  uint16_t mtid);
 115 void area_add_mt_setting(struct isis_area *area,
 116                          struct isis_area_mt_setting *setting);
 117
 118 void area_mt_init(struct isis_area *area);
 119 void area_mt_finish(struct isis_area *area);
 120 struct isis_area_mt_setting *area_get_mt_setting(struct isis_area *area,
 121                                                  uint16_t mtid);
 122 int area_write_mt_settings(struct isis_area *area, struct vty *vty);
 123 bool area_is_mt(struct isis_area *area);
 124 struct isis_area_mt_setting **area_mt_settings(struct isis_area *area,
 125                                                unsigned int *mt_count);
 126
 127 struct isis_circuit_mt_setting *
 128 circuit_lookup_mt_setting(struct isis_circuit *circuit, uint16_t mtid);
 129 struct isis_circuit_mt_setting *
 130 circuit_new_mt_setting(struct isis_circuit *circuit, uint16_t mtid);
 131 void circuit_add_mt_setting(struct isis_circuit *circuit,
 132                             struct isis_circuit_mt_setting *setting);
 133 void circuit_mt_init(struct isis_circuit *circuit);
 134 void circuit_mt_finish(struct isis_circuit *circuit);
 135 struct isis_circuit_mt_setting *
 136 circuit_get_mt_setting(struct isis_circuit *circuit, uint16_t mtid);
 137 int circuit_write_mt_settings(struct isis_circuit *circuit, struct vty *vty);
 138 struct isis_circuit_mt_setting **
 139 circuit_mt_settings(struct isis_circuit *circuit, unsigned int *mt_count);
 140 bool tlvs_to_adj_mt_set(struct tlvs *tlvs, bool v4_usable, bool v6_usable,
 141                         struct isis_adjacency *adj);
 142 bool adj_has_mt(struct isis_adjacency *adj, uint16_t mtid);
 143 void adj_mt_finish(struct isis_adjacency *adj);
 144 void tlvs_add_mt_bcast(struct tlvs *tlvs, struct isis_circuit *circuit,
 145                        int level, struct te_is_neigh *neigh);
 146 void tlvs_add_mt_p2p(struct tlvs *tlvs, struct isis_circuit *circuit,
 147                      struct te_is_neigh *neigh);
 148 #endif