ospf6d/ospf6_route.h

   1 /*
   2  * Copyright (C) 2003 Yasuhiro Ohara
   3  *
   4  * This file is part of GNU Zebra.
   5  *
   6  * GNU Zebra is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; either version 2, or (at your option) any
   9  * later version.
  10  *
  11  * GNU Zebra is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with GNU Zebra; see the file COPYING.  If not, write to the
  18  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19  * Boston, MA 02111-1307, USA.
  20  */
  21
  22 #ifndef OSPF6_ROUTE_H
  23 #define OSPF6_ROUTE_H
  24
  25 #define OSPF6_MULTI_PATH_LIMIT    4
  26
  27 /* Debug option */
  28 extern unsigned char conf_debug_ospf6_route;
  29 #define OSPF6_DEBUG_ROUTE_TABLE   0x01
  30 #define OSPF6_DEBUG_ROUTE_INTRA   0x02
  31 #define OSPF6_DEBUG_ROUTE_INTER   0x04
  32 #define OSPF6_DEBUG_ROUTE_MEMORY  0x80
  33 #define OSPF6_DEBUG_ROUTE_ON(level) \
  34   (conf_debug_ospf6_route |= (level))
  35 #define OSPF6_DEBUG_ROUTE_OFF(level) \
  36   (conf_debug_ospf6_route &= ~(level))
  37 #define IS_OSPF6_DEBUG_ROUTE(e) \
  38   (conf_debug_ospf6_route & OSPF6_DEBUG_ROUTE_ ## e)
  39
  40 /* Nexthop */
  41 struct ospf6_nexthop
  42 {
  43   /* Interface index */
  44   unsigned int ifindex;
  45
  46   /* IP address, if any */
  47   struct in6_addr address;
  48 };
  49
  50 #define ospf6_nexthop_is_set(x)                                \
  51   ((x)->ifindex || ! IN6_IS_ADDR_UNSPECIFIED (&(x)->address))
  52 #define ospf6_nexthop_is_same(a,b)                             \
  53   ((a)->ifindex == (b)->ifindex &&                            \
  54    IN6_ARE_ADDR_EQUAL (&(a)->address, &(b)->address))
  55 #define ospf6_nexthop_clear(x)                                \
  56   do {                                                        \
  57     (x)->ifindex = 0;                                         \
  58     memset (&(x)->address, 0, sizeof (struct in6_addr));      \
  59   } while (0)
  60 #define ospf6_nexthop_copy(a, b)                              \
  61   do {                                                        \
  62     (a)->ifindex = (b)->ifindex;                              \
  63     memcpy (&(a)->address, &(b)->address,                     \
  64             sizeof (struct in6_addr));                        \
  65   } while (0)
  66
  67 /* Path */
  68 struct ospf6_ls_origin
  69 {
  70   u_int16_t type;
  71   u_int32_t id;
  72   u_int32_t adv_router;
  73 };
  74
  75 struct ospf6_path
  76 {
  77   /* Link State Origin */
  78   struct ospf6_ls_origin origin;
  79
  80   /* Router bits */
  81   u_char router_bits;
  82
  83   /* Optional Capabilities */
  84   u_char options[3];
  85
  86   /* Prefix Options */
  87   u_char prefix_options;
  88
  89   /* Associated Area */
  90   u_int32_t area_id;
  91
  92   /* Path-type */
  93   u_char type;
  94   u_char subtype; /* only used for redistribute i.e ZEBRA_ROUTE_XXX */
  95
  96   /* Cost */
  97   u_int8_t metric_type;
  98   u_int32_t cost;
  99   u_int32_t cost_e2;
 100 };
 101
 102 #define OSPF6_PATH_TYPE_NONE         0
 103 #define OSPF6_PATH_TYPE_INTRA        1
 104 #define OSPF6_PATH_TYPE_INTER        2
 105 #define OSPF6_PATH_TYPE_EXTERNAL1    3
 106 #define OSPF6_PATH_TYPE_EXTERNAL2    4
 107 #define OSPF6_PATH_TYPE_REDISTRIBUTE 5
 108 #define OSPF6_PATH_TYPE_MAX          6
 109
 110 #include "prefix.h"
 111 #include "table.h"
 112
 113 struct ospf6_route
 114 {
 115   struct route_node *rnode;
 116   struct ospf6_route_table *table;
 117   struct ospf6_route *prev;
 118   struct ospf6_route *next;
 119
 120   unsigned int lock;
 121
 122   /* Destination Type */
 123   u_char type;
 124
 125   /* Destination ID */
 126   struct prefix prefix;
 127
 128   /* Time */
 129   struct timeval installed;
 130   struct timeval changed;
 131
 132   /* flag */
 133   u_char flag;
 134
 135   /* path */
 136   struct ospf6_path path;
 137
 138   /* nexthop */
 139   struct ospf6_nexthop nexthop[OSPF6_MULTI_PATH_LIMIT];
 140
 141   /* route option */
 142   void *route_option;
 143
 144   /* link state id for advertising */
 145   u_int32_t linkstate_id;
 146 };
 147
 148 #define OSPF6_DEST_TYPE_NONE       0
 149 #define OSPF6_DEST_TYPE_ROUTER     1
 150 #define OSPF6_DEST_TYPE_NETWORK    2
 151 #define OSPF6_DEST_TYPE_DISCARD    3
 152 #define OSPF6_DEST_TYPE_LINKSTATE  4
 153 #define OSPF6_DEST_TYPE_RANGE      5
 154 #define OSPF6_DEST_TYPE_MAX        6
 155
 156 #define OSPF6_ROUTE_CHANGE           0x01
 157 #define OSPF6_ROUTE_ADD              0x02
 158 #define OSPF6_ROUTE_REMOVE           0x04
 159 #define OSPF6_ROUTE_BEST             0x08
 160 #define OSPF6_ROUTE_ACTIVE_SUMMARY   0x10
 161 #define OSPF6_ROUTE_DO_NOT_ADVERTISE 0x20
 162 #define OSPF6_ROUTE_WAS_REMOVED      0x40
 163
 164 struct ospf6_route_table
 165 {
 166   int scope_type;
 167   int table_type;
 168   void *scope;
 169
 170   /* patricia tree */
 171   struct route_table *table;
 172
 173   u_int32_t count;
 174
 175   /* hooks */
 176   void (*hook_add) (struct ospf6_route *);
 177   void (*hook_change) (struct ospf6_route *);
 178   void (*hook_remove) (struct ospf6_route *);
 179 };
 180
 181 #define OSPF6_SCOPE_TYPE_NONE      0
 182 #define OSPF6_SCOPE_TYPE_GLOBAL    1
 183 #define OSPF6_SCOPE_TYPE_AREA      2
 184 #define OSPF6_SCOPE_TYPE_INTERFACE 3
 185
 186 #define OSPF6_TABLE_TYPE_NONE              0
 187 #define OSPF6_TABLE_TYPE_ROUTES            1
 188 #define OSPF6_TABLE_TYPE_BORDER_ROUTERS    2
 189 #define OSPF6_TABLE_TYPE_CONNECTED_ROUTES  3
 190 #define OSPF6_TABLE_TYPE_EXTERNAL_ROUTES   4
 191 #define OSPF6_TABLE_TYPE_SPF_RESULTS       5
 192 #define OSPF6_TABLE_TYPE_PREFIX_RANGES     6
 193 #define OSPF6_TABLE_TYPE_SUMMARY_PREFIXES  7
 194 #define OSPF6_TABLE_TYPE_SUMMARY_ROUTERS   8
 195
 196 #define OSPF6_ROUTE_TABLE_CREATE(s, t) \
 197   ospf6_route_table_create (OSPF6_SCOPE_TYPE_ ## s, \
 198                             OSPF6_TABLE_TYPE_ ## t)
 199
 200 extern const char *ospf6_dest_type_str[OSPF6_DEST_TYPE_MAX];
 201 extern const char *ospf6_dest_type_substr[OSPF6_DEST_TYPE_MAX];
 202 #define OSPF6_DEST_TYPE_NAME(x)                       \
 203   (0 < (x) && (x) < OSPF6_DEST_TYPE_MAX ?             \
 204    ospf6_dest_type_str[(x)] : ospf6_dest_type_str[0])
 205 #define OSPF6_DEST_TYPE_SUBSTR(x)                           \
 206   (0 < (x) && (x) < OSPF6_DEST_TYPE_MAX ?                   \
 207    ospf6_dest_type_substr[(x)] : ospf6_dest_type_substr[0])
 208
 209 extern const char *ospf6_path_type_str[OSPF6_PATH_TYPE_MAX];
 210 extern const char *ospf6_path_type_substr[OSPF6_PATH_TYPE_MAX];
 211 #define OSPF6_PATH_TYPE_NAME(x)                       \
 212   (0 < (x) && (x) < OSPF6_PATH_TYPE_MAX ?             \
 213    ospf6_path_type_str[(x)] : ospf6_path_type_str[0])
 214 #define OSPF6_PATH_TYPE_SUBSTR(x)                           \
 215   (0 < (x) && (x) < OSPF6_PATH_TYPE_MAX ?                   \
 216    ospf6_path_type_substr[(x)] : ospf6_path_type_substr[0])
 217
 218 #define OSPF6_ROUTE_ADDRESS_STR "Display the route bestmatches the address\n"
 219 #define OSPF6_ROUTE_PREFIX_STR  "Display the route\n"
 220 #define OSPF6_ROUTE_MATCH_STR   "Display the route matches the prefix\n"
 221
 222 #define ospf6_route_is_prefix(p, r) \
 223   (memcmp (p, &(r)->prefix, sizeof (struct prefix)) == 0)
 224 #define ospf6_route_is_same(ra, rb) \
 225   (prefix_same (&(ra)->prefix, &(rb)->prefix))
 226 #define ospf6_route_is_same_origin(ra, rb) \
 227   ((ra)->path.area_id == (rb)->path.area_id && \
 228    memcmp (&(ra)->path.origin, &(rb)->path.origin, \
 229            sizeof (struct ospf6_ls_origin)) == 0)
 230 #define ospf6_route_is_identical(ra, rb) \
 231   ((ra)->type == (rb)->type && \
 232    memcmp (&(ra)->prefix, &(rb)->prefix, sizeof (struct prefix)) == 0 && \
 233    memcmp (&(ra)->path, &(rb)->path, sizeof (struct ospf6_path)) == 0 && \
 234    memcmp (&(ra)->nexthop, &(rb)->nexthop,                               \
 235            sizeof (struct ospf6_nexthop) * OSPF6_MULTI_PATH_LIMIT) == 0)
 236 #define ospf6_route_is_best(r) (CHECK_FLAG ((r)->flag, OSPF6_ROUTE_BEST))
 237
 238 #define ospf6_linkstate_prefix_adv_router(x) \
 239   (*(u_int32_t *)(&(x)->u.prefix6.s6_addr[0]))
 240 #define ospf6_linkstate_prefix_id(x) \
 241   (*(u_int32_t *)(&(x)->u.prefix6.s6_addr[4]))
 242
 243 #define ADV_ROUTER_IN_PREFIX(x) \
 244   (*(u_int32_t *)(&(x)->u.prefix6.s6_addr[0]))
 245 #define ID_IN_PREFIX(x) \
 246   (*(u_int32_t *)(&(x)->u.prefix6.s6_addr[4]))
 247
 248 /* Function prototype */
 249 void ospf6_linkstate_prefix (u_int32_t adv_router, u_int32_t id,
 250                              struct prefix *prefix);
 251 void ospf6_linkstate_prefix2str (struct prefix *prefix, char *buf, int size);
 252
 253 struct ospf6_route *ospf6_route_create ();
 254 void ospf6_route_delete (struct ospf6_route *);
 255 struct ospf6_route *ospf6_route_copy (struct ospf6_route *route);
 256
 257 void ospf6_route_lock (struct ospf6_route *route);
 258 void ospf6_route_unlock (struct ospf6_route *route);
 259
 260 struct ospf6_route *
 261 ospf6_route_lookup (struct prefix *prefix,
 262                     struct ospf6_route_table *table);
 263 struct ospf6_route *
 264 ospf6_route_lookup_identical (struct ospf6_route *route,
 265                               struct ospf6_route_table *table);
 266 struct ospf6_route *
 267 ospf6_route_lookup_bestmatch (struct prefix *prefix,
 268                               struct ospf6_route_table *table);
 269
 270 struct ospf6_route *
 271 ospf6_route_add (struct ospf6_route *route, struct ospf6_route_table *table);
 272 void
 273 ospf6_route_remove (struct ospf6_route *route, struct ospf6_route_table *table);
 274
 275 struct ospf6_route *ospf6_route_head (struct ospf6_route_table *table);
 276 struct ospf6_route *ospf6_route_next (struct ospf6_route *route);
 277 struct ospf6_route *ospf6_route_best_next (struct ospf6_route *route);
 278
 279 struct ospf6_route *ospf6_route_match_head (struct prefix *prefix,
 280                                             struct ospf6_route_table *table);
 281 struct ospf6_route *ospf6_route_match_next (struct prefix *prefix,
 282                                             struct ospf6_route *route);
 283
 284 void ospf6_route_remove_all (struct ospf6_route_table *);
 285 struct ospf6_route_table *ospf6_route_table_create (int s, int t);
 286 void ospf6_route_table_delete (struct ospf6_route_table *);
 287 void ospf6_route_dump (struct ospf6_route_table *table);
 288
 289
 290 void ospf6_route_show (struct vty *vty, struct ospf6_route *route);
 291 void ospf6_route_show_detail (struct vty *vty, struct ospf6_route *route);
 292
 293 int ospf6_route_table_show (struct vty *, int, const char *[],
 294                             struct ospf6_route_table *);
 295 int ospf6_linkstate_table_show (struct vty *vty, int argc, const char *argv[],
 296                             struct ospf6_route_table *table);
 297
 298 void ospf6_brouter_show_header (struct vty *vty);
 299 void ospf6_brouter_show (struct vty *vty, struct ospf6_route *route);
 300
 301 int config_write_ospf6_debug_route (struct vty *vty);
 302 void install_element_ospf6_debug_route ();
 303 void ospf6_route_init ();
 304
 305 #endif /* OSPF6_ROUTE_H */
 306