ospfd/ospfd.h

   1 /*
   2  * OSPFd main header.
   3  * Copyright (C) 1998, 99, 2000 Kunihiro Ishiguro, Toshiaki Takada
   4  *
   5  * This file is part of GNU Zebra.
   6  *
   7  * GNU Zebra is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the
   9  * Free Software Foundation; either version 2, or (at your option) any
  10  * later version.
  11  *
  12  * GNU Zebra is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with GNU Zebra; see the file COPYING.  If not, write to the Free
  19  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  20  * 02111-1307, USA.
  21  */
  22
  23 #ifndef _ZEBRA_OSPFD_H
  24 #define _ZEBRA_OSPFD_H
  25
  26 #include "filter.h"
  27 #include "log.h"
  28
  29 #define OSPF_VERSION            2
  30
  31 /* Default protocol, port number. */
  32 #ifndef IPPROTO_OSPFIGP
  33 #define IPPROTO_OSPFIGP         89
  34 #endif /* IPPROTO_OSPFIGP */
  35
  36 /* IP precedence. */
  37 #ifndef IPTOS_PREC_INTERNETCONTROL
  38 #define IPTOS_PREC_INTERNETCONTROL      0xC0
  39 #endif /* IPTOS_PREC_INTERNETCONTROL */
  40
  41 /* VTY port number. */
  42 #define OSPF_VTY_PORT          2604
  43
  44 /* IP TTL for OSPF protocol. */
  45 #define OSPF_IP_TTL             1
  46 #define OSPF_VL_IP_TTL          100
  47
  48 /* Default configuration file name for ospfd. */
  49 #define OSPF_DEFAULT_CONFIG   "ospfd.conf"
  50
  51 /* Architectual Constants */
  52 #ifdef DEBUG
  53 #define OSPF_LS_REFRESH_TIME                    60
  54 #else
  55 #define OSPF_LS_REFRESH_TIME                  1800
  56 #endif
  57 #define OSPF_MIN_LS_INTERVAL                     5
  58 #define OSPF_MIN_LS_ARRIVAL                      1
  59 #define OSPF_LSA_MAXAGE                       3600
  60 #define OSPF_CHECK_AGE                         300
  61 #define OSPF_LSA_MAXAGE_DIFF                   900
  62 #define OSPF_LS_INFINITY                  0xffffff
  63 #define OSPF_DEFAULT_DESTINATION        0x00000000      /* 0.0.0.0 */
  64 #define OSPF_INITIAL_SEQUENCE_NUMBER    0x80000001
  65 #define OSPF_MAX_SEQUENCE_NUMBER        0x7fffffff
  66
  67 #define OSPF_LSA_MAXAGE_CHECK_INTERVAL          30
  68 #define OSPF_NSSA_TRANS_STABLE_DEFAULT          40
  69
  70 #define OSPF_ALLSPFROUTERS              0xe0000005      /* 224.0.0.5 */
  71 #define OSPF_ALLDROUTERS                0xe0000006      /* 224.0.0.6 */
  72
  73 /* XXX Where is this used? And why it was used only if compiled with
  74  * NSSA support. */
  75 #define OSPF_LOOPer                     0x7f000000      /* 127.0.0.0 */
  76
  77 #define OSPF_AREA_BACKBONE              0x00000000      /* 0.0.0.0 */
  78
  79 /* OSPF Authentication Type. */
  80 #define OSPF_AUTH_NULL                      0
  81 #define OSPF_AUTH_SIMPLE                    1
  82 #define OSPF_AUTH_CRYPTOGRAPHIC             2
  83 /* For Interface authentication setting default */
  84 #define OSPF_AUTH_NOTSET                   -1
  85 /* For the consumption and sanity of the command handler */
  86 /* DO NIOT REMOVE!!! Need to detect whether a value has
  87    been given or not in VLink command handlers */
  88 #define OSPF_AUTH_CMD_NOTSEEN              -2
  89
  90 /* OSPF SPF timer values. */
  91 #define OSPF_SPF_DELAY_DEFAULT              200
  92 #define OSPF_SPF_HOLDTIME_DEFAULT           1000
  93 #define OSPF_SPF_MAX_HOLDTIME_DEFAULT       10000
  94
  95 /* OSPF interface default values. */
  96 #define OSPF_OUTPUT_COST_DEFAULT           10
  97 #define OSPF_OUTPUT_COST_INFINITE          UINT16_MAX
  98 #define OSPF_ROUTER_DEAD_INTERVAL_DEFAULT  40
  99 #define OSPF_ROUTER_DEAD_INTERVAL_MINIMAL   1
 100 #define OSPF_HELLO_INTERVAL_DEFAULT        10
 101 #define OSPF_ROUTER_PRIORITY_DEFAULT        1
 102 #define OSPF_RETRANSMIT_INTERVAL_DEFAULT    5
 103 #define OSPF_TRANSMIT_DELAY_DEFAULT         1
 104 #define OSPF_DEFAULT_BANDWIDTH           10000  /* Kbps */
 105
 106 #define OSPF_DEFAULT_REF_BANDWIDTH      100000  /* Kbps */
 107
 108 #define OSPF_POLL_INTERVAL_DEFAULT         60
 109 #define OSPF_NEIGHBOR_PRIORITY_DEFAULT      0
 110
 111 #define OSPF_MTU_IGNORE_DEFAULT             0
 112 #define OSPF_FAST_HELLO_DEFAULT             0
 113
 114 /* OSPF options. */
 115 #define OSPF_OPTION_T                    0x01  /* TOS. */
 116 #define OSPF_OPTION_E                    0x02
 117 #define OSPF_OPTION_MC                   0x04
 118 #define OSPF_OPTION_NP                   0x08
 119 #define OSPF_OPTION_EA                   0x10
 120 #define OSPF_OPTION_DC                   0x20
 121 #define OSPF_OPTION_O                    0x40
 122
 123 /* OSPF Database Description flags. */
 124 #define OSPF_DD_FLAG_MS                  0x01
 125 #define OSPF_DD_FLAG_M                   0x02
 126 #define OSPF_DD_FLAG_I                   0x04
 127 #define OSPF_DD_FLAG_ALL                 0x07
 128
 129 #define OSPF_LS_REFRESH_SHIFT       (60 * 15)
 130 #define OSPF_LS_REFRESH_JITTER      60
 131
 132 /* OSPF master for system wide configuration and variables. */
 133 struct ospf_master
 134 {
 135   /* OSPF instance. */
 136   struct list *ospf;
 137
 138   /* OSPF thread master. */
 139   struct thread_master *master;
 140
 141   /* Zebra interface list. */
 142   struct list *iflist;
 143
 144   /* Redistributed external information. */
 145   struct route_table *external_info[ZEBRA_ROUTE_MAX + 1];
 146 #define EXTERNAL_INFO(T)      om->external_info[T]
 147
 148   /* OSPF start time. */
 149   time_t start_time;
 150
 151   /* Various OSPF global configuration. */
 152   u_char options;
 153 #define OSPF_MASTER_SHUTDOWN (1 << 0) /* deferred-shutdown */
 154 };
 155
 156 /* OSPF instance structure. */
 157 struct ospf
 158 {
 159   /* OSPF Router ID. */
 160   struct in_addr router_id;             /* Configured automatically. */
 161   struct in_addr router_id_static;      /* Configured manually. */
 162
 163   /* ABR/ASBR internal flags. */
 164   u_char flags;
 165 #define OSPF_FLAG_ABR           0x0001
 166 #define OSPF_FLAG_ASBR          0x0002
 167
 168   /* ABR type. */
 169   u_char abr_type;
 170 #define OSPF_ABR_UNKNOWN        0
 171 #define OSPF_ABR_STAND          1
 172 #define OSPF_ABR_IBM            2
 173 #define OSPF_ABR_CISCO          3
 174 #define OSPF_ABR_SHORTCUT       4
 175 #define OSPF_ABR_DEFAULT        OSPF_ABR_CISCO
 176
 177   /* NSSA ABR */
 178   u_char anyNSSA;               /* Bump for every NSSA attached. */
 179
 180   /* Configured variables. */
 181   u_char config;
 182 #define OSPF_RFC1583_COMPATIBLE         (1 << 0)
 183 #define OSPF_OPAQUE_CAPABLE             (1 << 2)
 184 #define OSPF_LOG_ADJACENCY_CHANGES      (1 << 3)
 185 #define OSPF_LOG_ADJACENCY_DETAIL       (1 << 4)
 186
 187 #ifdef HAVE_OPAQUE_LSA
 188   /* Opaque-LSA administrative flags. */
 189   u_char opaque;
 190 #define OPAQUE_OPERATION_READY_BIT      (1 << 0)
 191 #define OPAQUE_BLOCK_TYPE_09_LSA_BIT    (1 << 1)
 192 #define OPAQUE_BLOCK_TYPE_10_LSA_BIT    (1 << 2)
 193 #define OPAQUE_BLOCK_TYPE_11_LSA_BIT    (1 << 3)
 194 #endif /* HAVE_OPAQUE_LSA */
 195
 196   /* RFC3137 stub router. Configured time to stay stub / max-metric */
 197   unsigned int stub_router_startup_time;        /* seconds */
 198   unsigned int stub_router_shutdown_time;       /* seconds */
 199 #define OSPF_STUB_ROUTER_UNCONFIGURED     0
 200
 201   /* SPF parameters */
 202   unsigned int spf_delay;               /* SPF delay time. */
 203   unsigned int spf_holdtime;            /* SPF hold time. */
 204   unsigned int spf_max_holdtime;        /* SPF maximum-holdtime */
 205   unsigned int spf_hold_multiplier;     /* Adaptive multiplier for hold time */
 206
 207   int default_originate;                /* Default information originate. */
 208 #define DEFAULT_ORIGINATE_NONE          0
 209 #define DEFAULT_ORIGINATE_ZEBRA         1
 210 #define DEFAULT_ORIGINATE_ALWAYS        2
 211   u_int32_t ref_bandwidth;              /* Reference Bandwidth (Kbps). */
 212   struct route_table *networks;         /* OSPF config networks. */
 213   struct list *vlinks;                  /* Configured Virtual-Links. */
 214   struct list *areas;                   /* OSPF areas. */
 215   struct route_table *nbr_nbma;
 216   struct ospf_area *backbone;           /* Pointer to the Backbone Area. */
 217
 218   struct list *oiflist;                 /* ospf interfaces */
 219   u_char passive_interface_default;     /* passive-interface default */
 220
 221   /* LSDB of AS-external-LSAs. */
 222   struct ospf_lsdb *lsdb;
 223
 224   /* Flags. */
 225   int external_origin;                  /* AS-external-LSA origin flag. */
 226   int ase_calc;                         /* ASE calculation flag. */
 227
 228 #ifdef HAVE_OPAQUE_LSA
 229   struct list *opaque_lsa_self;         /* Type-11 Opaque-LSAs */
 230 #endif /* HAVE_OPAQUE_LSA */
 231
 232   /* Routing tables. */
 233   struct route_table *old_table;        /* Old routing table. */
 234   struct route_table *new_table;        /* Current routing table. */
 235
 236   struct route_table *old_rtrs;         /* Old ABR/ASBR RT. */
 237   struct route_table *new_rtrs;         /* New ABR/ASBR RT. */
 238
 239   struct route_table *new_external_route;   /* New External Route. */
 240   struct route_table *old_external_route;   /* Old External Route. */
 241
 242   struct route_table *external_lsas;    /* Database of external LSAs,
 243                                            prefix is LSA's adv. network*/
 244
 245   /* Time stamps. */
 246   struct timeval ts_spf;                /* SPF calculation time stamp. */
 247
 248   struct list *maxage_lsa;              /* List of MaxAge LSA for deletion. */
 249   int redistribute;                     /* Num of redistributed protocols. */
 250
 251   /* Threads. */
 252   struct thread *t_router_lsa_update;   /* router-LSA update timer. */
 253   struct thread *t_abr_task;            /* ABR task timer. */
 254   struct thread *t_asbr_check;          /* ASBR check timer. */
 255   struct thread *t_distribute_update;   /* Distirbute list update timer. */
 256   struct thread *t_spf_calc;            /* SPF calculation timer. */
 257   struct thread *t_ase_calc;            /* ASE calculation timer. */
 258   struct thread *t_external_lsa;        /* AS-external-LSA origin timer. */
 259 #ifdef HAVE_OPAQUE_LSA
 260   struct thread *t_opaque_lsa_self;     /* Type-11 Opaque-LSAs origin event. */
 261 #endif /* HAVE_OPAQUE_LSA */
 262   struct thread *t_maxage;              /* MaxAge LSA remover timer. */
 263   struct thread *t_maxage_walker;       /* MaxAge LSA checking timer. */
 264   struct thread *t_deferred_shutdown;   /* deferred/stub-router shutdown timer*/
 265
 266   struct thread *t_write;
 267   struct thread *t_read;
 268   int fd;
 269   int maxsndbuflen;
 270   struct stream *ibuf;
 271   struct list *oi_write_q;
 272
 273   /* Distribute lists out of other route sources. */
 274   struct
 275   {
 276     char *name;
 277     struct access_list *list;
 278   } dlist[ZEBRA_ROUTE_MAX];
 279 #define DISTRIBUTE_NAME(O,T)    (O)->dlist[T].name
 280 #define DISTRIBUTE_LIST(O,T)    (O)->dlist[T].list
 281
 282   /* Redistribute metric info. */
 283   struct
 284   {
 285     int type;                   /* External metric type (E1 or E2).  */
 286     int value;                  /* Value for static metric (24-bit).
 287                                    -1 means metric value is not set. */
 288   } dmetric [ZEBRA_ROUTE_MAX + 1];
 289
 290   /* For redistribute route map. */
 291   struct
 292   {
 293     char *name;
 294     struct route_map *map;
 295   } route_map [ZEBRA_ROUTE_MAX + 1]; /* +1 is for default-information */
 296 #define ROUTEMAP_NAME(O,T)   (O)->route_map[T].name
 297 #define ROUTEMAP(O,T)        (O)->route_map[T].map
 298
 299   int default_metric;           /* Default metric for redistribute. */
 300
 301 #define OSPF_LSA_REFRESHER_GRANULARITY 10
 302 #define OSPF_LSA_REFRESHER_SLOTS ((OSPF_LS_REFRESH_TIME + \
 303                                   OSPF_LS_REFRESH_SHIFT)/10 + 1)
 304   struct
 305   {
 306     u_int16_t index;
 307     struct list *qs[OSPF_LSA_REFRESHER_SLOTS];
 308   } lsa_refresh_queue;
 309
 310   struct thread *t_lsa_refresher;
 311   time_t lsa_refresher_started;
 312 #define OSPF_LSA_REFRESH_INTERVAL_DEFAULT 10
 313   u_int16_t lsa_refresh_interval;
 314
 315   /* Distance parameter. */
 316   u_char distance_all;
 317   u_char distance_intra;
 318   u_char distance_inter;
 319   u_char distance_external;
 320
 321   /* Statistics for LSA origination. */
 322   u_int32_t lsa_originate_count;
 323
 324   /* Statistics for LSA used for new instantiation. */
 325   u_int32_t rx_lsa_count;
 326
 327   struct route_table *distance_table;
 328 };
 329
 330 /* OSPF area structure. */
 331 struct ospf_area
 332 {
 333   /* OSPF instance. */
 334   struct ospf *ospf;
 335
 336   /* Zebra interface list belonging to the area. */
 337   struct list *oiflist;
 338
 339   /* Area ID. */
 340   struct in_addr area_id;
 341
 342   /* Area ID format. */
 343   char format;
 344 #define OSPF_AREA_ID_FORMAT_ADDRESS         1
 345 #define OSPF_AREA_ID_FORMAT_DECIMAL         2
 346
 347   /* Address range. */
 348   struct list *address_range;
 349
 350   /* Configured variables. */
 351   int external_routing;                 /* ExternalRoutingCapability. */
 352 #define OSPF_AREA_DEFAULT       0
 353 #define OSPF_AREA_STUB          1
 354 #define OSPF_AREA_NSSA          2
 355 #define OSPF_AREA_TYPE_MAX      3
 356   int no_summary;                       /* Don't inject summaries into stub.*/
 357   int shortcut_configured;              /* Area configured as shortcut. */
 358 #define OSPF_SHORTCUT_DEFAULT   0
 359 #define OSPF_SHORTCUT_ENABLE    1
 360 #define OSPF_SHORTCUT_DISABLE   2
 361   int shortcut_capability;              /* Other ABRs agree on S-bit */
 362   u_int32_t default_cost;               /* StubDefaultCost. */
 363   int auth_type;                        /* Authentication type. */
 364
 365
 366   u_char NSSATranslatorRole;          /* NSSA configured role */
 367 #define OSPF_NSSA_ROLE_NEVER     0
 368 #define OSPF_NSSA_ROLE_CANDIDATE 1
 369 #define OSPF_NSSA_ROLE_ALWAYS    2
 370   u_char NSSATranslatorState;              /* NSSA operational role */
 371 #define OSPF_NSSA_TRANSLATE_DISABLED 0
 372 #define OSPF_NSSA_TRANSLATE_ENABLED  1
 373   int NSSATranslatorStabilityInterval;
 374
 375   u_char transit;                       /* TransitCapability. */
 376 #define OSPF_TRANSIT_FALSE      0
 377 #define OSPF_TRANSIT_TRUE       1
 378   struct route_table *ranges;           /* Configured Area Ranges. */
 379
 380   /* RFC3137 stub router state flags for area */
 381   u_char stub_router_state;
 382 #define OSPF_AREA_ADMIN_STUB_ROUTED     (1 << 0) /* admin stub-router set */
 383 #define OSPF_AREA_IS_STUB_ROUTED        (1 << 1) /* stub-router active */
 384 #define OSPF_AREA_WAS_START_STUB_ROUTED (1 << 2) /* startup SR was done */
 385
 386   /* Area related LSDBs[Type1-4]. */
 387   struct ospf_lsdb *lsdb;
 388
 389   /* Self-originated LSAs. */
 390   struct ospf_lsa *router_lsa_self;
 391 #ifdef HAVE_OPAQUE_LSA
 392   struct list *opaque_lsa_self;         /* Type-10 Opaque-LSAs */
 393 #endif /* HAVE_OPAQUE_LSA */
 394
 395   /* Area announce list. */
 396   struct
 397   {
 398     char *name;
 399     struct access_list *list;
 400   } _export;
 401 #define EXPORT_NAME(A)  (A)->_export.name
 402 #define EXPORT_LIST(A)  (A)->_export.list
 403
 404   /* Area acceptance list. */
 405   struct
 406   {
 407     char *name;
 408     struct access_list *list;
 409   } import;
 410 #define IMPORT_NAME(A)  (A)->import.name
 411 #define IMPORT_LIST(A)  (A)->import.list
 412
 413   /* Type 3 LSA Area prefix-list. */
 414   struct
 415   {
 416     char *name;
 417     struct prefix_list *list;
 418   } plist_in;
 419 #define PREFIX_LIST_IN(A)   (A)->plist_in.list
 420 #define PREFIX_NAME_IN(A)   (A)->plist_in.name
 421
 422   struct
 423   {
 424     char *name;
 425     struct prefix_list *list;
 426   } plist_out;
 427 #define PREFIX_LIST_OUT(A)  (A)->plist_out.list
 428 #define PREFIX_NAME_OUT(A)  (A)->plist_out.name
 429
 430   /* Shortest Path Tree. */
 431   struct vertex *spf;
 432
 433   /* Threads. */
 434   struct thread *t_router_lsa_self;/* Self-originated router-LSA timer. */
 435   struct thread *t_stub_router;    /* Stub-router timer */
 436 #ifdef HAVE_OPAQUE_LSA
 437   struct thread *t_opaque_lsa_self;     /* Type-10 Opaque-LSAs origin. */
 438 #endif /* HAVE_OPAQUE_LSA */
 439
 440   /* Statistics field. */
 441   u_int32_t spf_calculation;    /* SPF Calculation Count. */
 442
 443   /* Router count. */
 444   u_int32_t abr_count;          /* ABR router in this area. */
 445   u_int32_t asbr_count;         /* ASBR router in this area. */
 446
 447   /* Counters. */
 448   u_int32_t act_ints;           /* Active interfaces. */
 449   u_int32_t full_nbrs;          /* Fully adjacent neighbors. */
 450   u_int32_t full_vls;           /* Fully adjacent virtual neighbors. */
 451 };
 452
 453 /* OSPF config network structure. */
 454 struct ospf_network
 455 {
 456   /* Area ID. */
 457   struct in_addr area_id;
 458   int format;
 459 };
 460
 461 /* OSPF NBMA neighbor structure. */
 462 struct ospf_nbr_nbma
 463 {
 464   /* Neighbor IP address. */
 465   struct in_addr addr;
 466
 467   /* OSPF interface. */
 468   struct ospf_interface *oi;
 469
 470   /* OSPF neighbor structure. */
 471   struct ospf_neighbor *nbr;
 472
 473   /* Neighbor priority. */
 474   u_char priority;
 475
 476   /* Poll timer value. */
 477   u_int32_t v_poll;
 478
 479   /* Poll timer thread. */
 480   struct thread *t_poll;
 481
 482   /* State change. */
 483   u_int32_t state_change;
 484 };
 485
 486 /* Macro. */
 487 #define OSPF_AREA_SAME(X,Y) \
 488         (memcmp ((X->area_id), (Y->area_id), IPV4_MAX_BYTELEN) == 0)
 489
 490 #define IS_OSPF_ABR(O)          ((O)->flags & OSPF_FLAG_ABR)
 491 #define IS_OSPF_ASBR(O)         ((O)->flags & OSPF_FLAG_ASBR)
 492
 493 #define OSPF_IS_AREA_ID_BACKBONE(I) ((I).s_addr == OSPF_AREA_BACKBONE)
 494 #define OSPF_IS_AREA_BACKBONE(A) OSPF_IS_AREA_ID_BACKBONE ((A)->area_id)
 495
 496 #ifdef roundup
 497 #  define ROUNDUP(val, gran)    roundup(val, gran)
 498 #else /* roundup */
 499 #  define ROUNDUP(val, gran)    (((val) - 1 | (gran) - 1) + 1)
 500 #endif /* roundup */
 501
 502 #define LSA_OPTIONS_GET(area) \
 503         (((area)->external_routing == OSPF_AREA_DEFAULT) ? OSPF_OPTION_E : 0)
 504 #define LSA_OPTIONS_NSSA_GET(area) \
 505         (((area)->external_routing == OSPF_AREA_NSSA)  ? OSPF_OPTION_NP : 0)
 506
 507 #define OSPF_TIMER_ON(T,F,V)                                                  \
 508     do {                                                                      \
 509       if (!(T))                                                               \
 510         (T) = thread_add_timer (master, (F), ospf, (V));                      \
 511     } while (0)
 512
 513 #define OSPF_AREA_TIMER_ON(T,F,V)                                             \
 514     do {                                                                      \
 515       if (!(T))                                                               \
 516         (T) = thread_add_timer (master, (F), area, (V));                      \
 517     } while (0)
 518
 519 #define OSPF_POLL_TIMER_ON(T,F,V)                                             \
 520     do {                                                                      \
 521       if (!(T))                                                               \
 522         (T) = thread_add_timer (master, (F), nbr_nbma, (V));                  \
 523     } while (0)
 524
 525 #define OSPF_POLL_TIMER_OFF(X)          OSPF_TIMER_OFF((X))
 526
 527 #define OSPF_TIMER_OFF(X)                                                     \
 528     do {                                                                      \
 529       if (X)                                                                  \
 530         {                                                                     \
 531           thread_cancel (X);                                                  \
 532           (X) = NULL;                                                         \
 533         }                                                                     \
 534     } while (0)
 535
 536 /* Extern variables. */
 537 extern struct ospf_master *om;
 538 extern struct message ospf_ism_state_msg[];
 539 extern struct message ospf_nsm_state_msg[];
 540 extern struct message ospf_lsa_type_msg[];
 541 extern struct message ospf_link_state_id_type_msg[];
 542 extern struct message ospf_network_type_msg[];
 543 extern int ospf_ism_state_msg_max;
 544 extern int ospf_nsm_state_msg_max;
 545 extern int ospf_lsa_type_msg_max;
 546 extern int ospf_link_state_id_type_msg_max;
 547 extern int ospf_redistributed_proto_max;
 548 extern int ospf_network_type_msg_max;
 549 extern struct zclient *zclient;
 550 extern struct thread_master *master;
 551 extern int ospf_zlog;
 552
 553 /* Prototypes. */
 554 extern const char *ospf_redist_string(u_int route_type);
 555 extern struct ospf *ospf_lookup (void);
 556 extern struct ospf *ospf_get (void);
 557 extern void ospf_finish (struct ospf *);
 558 extern void ospf_router_id_update (struct ospf *ospf);
 559 extern int ospf_network_match_iface (struct connected *, struct prefix *);
 560 extern int ospf_network_set (struct ospf *, struct prefix_ipv4 *,
 561                              struct in_addr);
 562 extern int ospf_network_unset (struct ospf *, struct prefix_ipv4 *,
 563                                struct in_addr);
 564 extern int ospf_area_stub_set (struct ospf *, struct in_addr);
 565 extern int ospf_area_stub_unset (struct ospf *, struct in_addr);
 566 extern int ospf_area_no_summary_set (struct ospf *, struct in_addr);
 567 extern int ospf_area_no_summary_unset (struct ospf *, struct in_addr);
 568 extern int ospf_area_nssa_set (struct ospf *, struct in_addr);
 569 extern int ospf_area_nssa_unset (struct ospf *, struct in_addr);
 570 extern int ospf_area_nssa_translator_role_set (struct ospf *, struct in_addr,
 571                                                int);
 572 extern int ospf_area_export_list_set (struct ospf *, struct ospf_area *,
 573                                       const char *);
 574 extern int ospf_area_export_list_unset (struct ospf *, struct ospf_area *);
 575 extern int ospf_area_import_list_set (struct ospf *, struct ospf_area *,
 576                                       const char *);
 577 extern int ospf_area_import_list_unset (struct ospf *, struct ospf_area *);
 578 extern int ospf_area_shortcut_set (struct ospf *, struct ospf_area *, int);
 579 extern int ospf_area_shortcut_unset (struct ospf *, struct ospf_area *);
 580 extern int ospf_timers_refresh_set (struct ospf *, int);
 581 extern int ospf_timers_refresh_unset (struct ospf *);
 582 extern int ospf_nbr_nbma_set (struct ospf *, struct in_addr);
 583 extern int ospf_nbr_nbma_unset (struct ospf *, struct in_addr);
 584 extern int ospf_nbr_nbma_priority_set (struct ospf *, struct in_addr, u_char);
 585 extern int ospf_nbr_nbma_priority_unset (struct ospf *, struct in_addr);
 586 extern int ospf_nbr_nbma_poll_interval_set (struct ospf *, struct in_addr,
 587                                             unsigned int);
 588 extern int ospf_nbr_nbma_poll_interval_unset (struct ospf *, struct in_addr);
 589 extern void ospf_prefix_list_update (struct prefix_list *);
 590 extern void ospf_init (void);
 591 extern void ospf_if_update (struct ospf *, struct interface *);
 592 extern void ospf_ls_upd_queue_empty (struct ospf_interface *);
 593 extern void ospf_terminate (void);
 594 extern void ospf_nbr_nbma_if_update (struct ospf *, struct ospf_interface *);
 595 extern struct ospf_nbr_nbma *ospf_nbr_nbma_lookup (struct ospf *,
 596                                                    struct in_addr);
 597 extern struct ospf_nbr_nbma *ospf_nbr_nbma_lookup_next (struct ospf *,
 598                                                         struct in_addr *,
 599                                                         int);
 600 extern int ospf_oi_count (struct interface *);
 601
 602 extern struct ospf_area *ospf_area_get (struct ospf *, struct in_addr, int);
 603 extern void ospf_area_check_free (struct ospf *, struct in_addr);
 604 extern struct ospf_area *ospf_area_lookup_by_area_id (struct ospf *,
 605                                                       struct in_addr);
 606 extern void ospf_area_add_if (struct ospf_area *, struct ospf_interface *);
 607 extern void ospf_area_del_if (struct ospf_area *, struct ospf_interface *);
 608
 609 extern void ospf_route_map_init (void);
 610 extern void ospf_snmp_init (void);
 611
 612 extern void ospf_master_init (void);
 613
 614 #endif /* _ZEBRA_OSPFD_H */