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              1
  92 #define OSPF_SPF_HOLDTIME_DEFAULT           1
  93
  94 /* OSPF interface default values. */
  95 #define OSPF_OUTPUT_COST_DEFAULT           10
  96 #define OSPF_ROUTER_DEAD_INTERVAL_DEFAULT  40
  97 #define OSPF_HELLO_INTERVAL_DEFAULT        10
  98 #define OSPF_ROUTER_PRIORITY_DEFAULT        1
  99 #define OSPF_RETRANSMIT_INTERVAL_DEFAULT    5
 100 #define OSPF_TRANSMIT_DELAY_DEFAULT         1
 101 #define OSPF_DEFAULT_BANDWIDTH           10000  /* Kbps */
 102
 103 #define OSPF_DEFAULT_REF_BANDWIDTH      100000  /* Kbps */
 104
 105 #define OSPF_POLL_INTERVAL_DEFAULT         60
 106 #define OSPF_NEIGHBOR_PRIORITY_DEFAULT      0
 107
 108 /* OSPF options. */
 109 #define OSPF_OPTION_T                    0x01  /* TOS. */
 110 #define OSPF_OPTION_E                    0x02
 111 #define OSPF_OPTION_MC                   0x04
 112 #define OSPF_OPTION_NP                   0x08
 113 #define OSPF_OPTION_EA                   0x10
 114 #define OSPF_OPTION_DC                   0x20
 115 #define OSPF_OPTION_O                    0x40
 116
 117 /* OSPF Database Description flags. */
 118 #define OSPF_DD_FLAG_MS                  0x01
 119 #define OSPF_DD_FLAG_M                   0x02
 120 #define OSPF_DD_FLAG_I                   0x04
 121 #define OSPF_DD_FLAG_ALL                 0x07
 122
 123 /* Timer value. */
 124 #define OSPF_ROUTER_ID_UPDATE_DELAY             1
 125
 126 #define OSPF_LS_REFRESH_SHIFT       (60 * 15)
 127 #define OSPF_LS_REFRESH_JITTER      60
 128
 129 /* OSPF master for system wide configuration and variables. */
 130 struct ospf_master
 131 {
 132   /* OSPF instance. */
 133   struct list *ospf;
 134
 135   /* OSPF thread master. */
 136   struct thread_master *master;
 137
 138   /* Zebra interface list. */
 139   struct list *iflist;
 140
 141   /* Redistributed external information. */
 142   struct route_table *external_info[ZEBRA_ROUTE_MAX + 1];
 143 #define EXTERNAL_INFO(T)      om->external_info[T]
 144
 145   /* OSPF start time. */
 146   time_t start_time;
 147
 148   /* Various OSPF global configuration. */
 149   u_char options;
 150 };
 151
 152 /* OSPF instance structure. */
 153 struct ospf
 154 {
 155   /* OSPF Router ID. */
 156   struct in_addr router_id;             /* Configured automatically. */
 157   struct in_addr router_id_static;      /* Configured manually. */
 158
 159   /* ABR/ASBR internal flags. */
 160   u_char flags;
 161 #define OSPF_FLAG_ABR           0x0001
 162 #define OSPF_FLAG_ASBR          0x0002
 163
 164   /* ABR type. */
 165   u_char abr_type;
 166 #define OSPF_ABR_UNKNOWN        0
 167 #define OSPF_ABR_STAND          1
 168 #define OSPF_ABR_IBM            2
 169 #define OSPF_ABR_CISCO          3
 170 #define OSPF_ABR_SHORTCUT       4
 171
 172   /* NSSA ABR */
 173   u_char anyNSSA;               /* Bump for every NSSA attached. */
 174
 175   /* Configured variables. */
 176   u_char config;
 177 #define OSPF_RFC1583_COMPATIBLE         (1 << 0)
 178 #define OSPF_OPAQUE_CAPABLE             (1 << 2)
 179
 180 #ifdef HAVE_OPAQUE_LSA
 181   /* Opaque-LSA administrative flags. */
 182   u_char opaque;
 183 #define OPAQUE_OPERATION_READY_BIT      (1 << 0)
 184 #define OPAQUE_BLOCK_TYPE_09_LSA_BIT    (1 << 1)
 185 #define OPAQUE_BLOCK_TYPE_10_LSA_BIT    (1 << 2)
 186 #define OPAQUE_BLOCK_TYPE_11_LSA_BIT    (1 << 3)
 187 #endif /* HAVE_OPAQUE_LSA */
 188
 189   int spf_delay;                        /* SPF delay time. */
 190   int spf_holdtime;                     /* SPF hold time. */
 191   int default_originate;                /* Default information originate. */
 192 #define DEFAULT_ORIGINATE_NONE          0
 193 #define DEFAULT_ORIGINATE_ZEBRA         1
 194 #define DEFAULT_ORIGINATE_ALWAYS        2
 195   u_int32_t ref_bandwidth;              /* Reference Bandwidth (Kbps). */
 196   struct route_table *networks;         /* OSPF config networks. */
 197   struct list *vlinks;                  /* Configured Virtual-Links. */
 198   struct list *areas;                   /* OSPF areas. */
 199   struct route_table *nbr_nbma;
 200   struct ospf_area *backbone;           /* Pointer to the Backbone Area. */
 201
 202   struct list *oiflist;                 /* ospf interfaces */
 203
 204   /* LSDB of AS-external-LSAs. */
 205   struct ospf_lsdb *lsdb;
 206
 207   /* Flags. */
 208   int external_origin;                  /* AS-external-LSA origin flag. */
 209   int ase_calc;                         /* ASE calculation flag. */
 210
 211 #ifdef HAVE_OPAQUE_LSA
 212   struct list *opaque_lsa_self;         /* Type-11 Opaque-LSAs */
 213 #endif /* HAVE_OPAQUE_LSA */
 214
 215   /* Routing tables. */
 216   struct route_table *old_table;        /* Old routing table. */
 217   struct route_table *new_table;        /* Current routing table. */
 218
 219   struct route_table *old_rtrs;         /* Old ABR/ASBR RT. */
 220   struct route_table *new_rtrs;         /* New ABR/ASBR RT. */
 221
 222   struct route_table *new_external_route;   /* New External Route. */
 223   struct route_table *old_external_route;   /* Old External Route. */
 224
 225   struct route_table *external_lsas;    /* Database of external LSAs,
 226                                            prefix is LSA's adv. network*/
 227
 228   /* Time stamps. */
 229   time_t ts_spf;                        /* SPF calculation time stamp. */
 230
 231   struct list *maxage_lsa;              /* List of MaxAge LSA for deletion. */
 232   int redistribute;                     /* Num of redistributed protocols. */
 233
 234   /* Threads. */
 235   struct thread *t_router_id_update;    /* Router ID update timer. */
 236   struct thread *t_router_lsa_update;   /* router-LSA update timer. */
 237   struct thread *t_abr_task;            /* ABR task timer. */
 238   struct thread *t_asbr_check;          /* ASBR check timer. */
 239   struct thread *t_distribute_update;   /* Distirbute list update timer. */
 240   struct thread *t_spf_calc;            /* SPF calculation timer. */
 241   struct thread *t_ase_calc;            /* ASE calculation timer. */
 242   struct thread *t_external_lsa;        /* AS-external-LSA origin timer. */
 243 #ifdef HAVE_OPAQUE_LSA
 244   struct thread *t_opaque_lsa_self;     /* Type-11 Opaque-LSAs origin event. */
 245 #endif /* HAVE_OPAQUE_LSA */
 246   struct thread *t_maxage;              /* MaxAge LSA remover timer. */
 247   struct thread *t_maxage_walker;       /* MaxAge LSA checking timer. */
 248
 249   struct thread *t_write;
 250   struct thread *t_read;
 251   int fd;
 252   struct stream *ibuf;
 253   struct list *oi_write_q;
 254
 255   /* Distribute lists out of other route sources. */
 256   struct
 257   {
 258     char *name;
 259     struct access_list *list;
 260   } dlist[ZEBRA_ROUTE_MAX];
 261 #define DISTRIBUTE_NAME(O,T)    (O)->dlist[T].name
 262 #define DISTRIBUTE_LIST(O,T)    (O)->dlist[T].list
 263
 264   /* Redistribute metric info. */
 265   struct
 266   {
 267     int type;                   /* External metric type (E1 or E2).  */
 268     int value;                  /* Value for static metric (24-bit).
 269                                    -1 means metric value is not set. */
 270   } dmetric [ZEBRA_ROUTE_MAX + 1];
 271
 272   /* For redistribute route map. */
 273   struct
 274   {
 275     char *name;
 276     struct route_map *map;
 277   } route_map [ZEBRA_ROUTE_MAX + 1]; /* +1 is for default-information */
 278 #define ROUTEMAP_NAME(O,T)   (O)->route_map[T].name
 279 #define ROUTEMAP(O,T)        (O)->route_map[T].map
 280
 281   int default_metric;           /* Default metric for redistribute. */
 282
 283 #define OSPF_LSA_REFRESHER_GRANULARITY 10
 284 #define OSPF_LSA_REFRESHER_SLOTS ((OSPF_LS_REFRESH_TIME + \
 285                                   OSPF_LS_REFRESH_SHIFT)/10 + 1)
 286   struct
 287   {
 288     u_int16_t index;
 289     struct list *qs[OSPF_LSA_REFRESHER_SLOTS];
 290   } lsa_refresh_queue;
 291
 292   struct thread *t_lsa_refresher;
 293   time_t lsa_refresher_started;
 294 #define OSPF_LSA_REFRESH_INTERVAL_DEFAULT 10
 295   u_int16_t lsa_refresh_interval;
 296
 297   /* Distance parameter. */
 298   u_char distance_all;
 299   u_char distance_intra;
 300   u_char distance_inter;
 301   u_char distance_external;
 302
 303   /* Statistics for LSA origination. */
 304   u_int32_t lsa_originate_count;
 305
 306   /* Statistics for LSA used for new instantiation. */
 307   u_int32_t rx_lsa_count;
 308
 309   struct route_table *distance_table;
 310 };
 311
 312 /* OSPF area structure. */
 313 struct ospf_area
 314 {
 315   /* OSPF instance. */
 316   struct ospf *ospf;
 317
 318   /* Zebra interface list belonging to the area. */
 319   struct list *oiflist;
 320
 321   /* Area ID. */
 322   struct in_addr area_id;
 323
 324   /* Area ID format. */
 325   char format;
 326 #define OSPF_AREA_ID_FORMAT_ADDRESS         1
 327 #define OSPF_AREA_ID_FORMAT_DECIMAL         2
 328
 329   /* Address range. */
 330   struct list *address_range;
 331
 332   /* Configured variables. */
 333   int external_routing;                 /* ExternalRoutingCapability. */
 334 #define OSPF_AREA_DEFAULT       0
 335 #define OSPF_AREA_STUB          1
 336 #define OSPF_AREA_NSSA          2
 337 #define OSPF_AREA_TYPE_MAX      3
 338   int no_summary;                       /* Don't inject summaries into stub.*/
 339   int shortcut_configured;              /* Area configured as shortcut. */
 340 #define OSPF_SHORTCUT_DEFAULT   0
 341 #define OSPF_SHORTCUT_ENABLE    1
 342 #define OSPF_SHORTCUT_DISABLE   2
 343   int shortcut_capability;              /* Other ABRs agree on S-bit */
 344   u_int32_t default_cost;               /* StubDefaultCost. */
 345   int auth_type;                        /* Authentication type. */
 346
 347   u_char NSSATranslatorRole;          /* NSSA configured role */
 348 #define OSPF_NSSA_ROLE_NEVER     0
 349 #define OSPF_NSSA_ROLE_CANDIDATE 1
 350 #define OSPF_NSSA_ROLE_ALWAYS    2
 351   u_char NSSATranslatorState;              /* NSSA operational role */
 352 #define OSPF_NSSA_TRANSLATE_DISABLED 0
 353 #define OSPF_NSSA_TRANSLATE_ENABLED  1
 354   int NSSATranslatorStabilityInterval;
 355
 356   u_char transit;                       /* TransitCapability. */
 357 #define OSPF_TRANSIT_FALSE      0
 358 #define OSPF_TRANSIT_TRUE       1
 359   struct route_table *ranges;           /* Configured Area Ranges. */
 360
 361   /* Area related LSDBs[Type1-4]. */
 362   struct ospf_lsdb *lsdb;
 363
 364   /* Self-originated LSAs. */
 365   struct ospf_lsa *router_lsa_self;
 366 #ifdef HAVE_OPAQUE_LSA
 367   struct list *opaque_lsa_self;         /* Type-10 Opaque-LSAs */
 368 #endif /* HAVE_OPAQUE_LSA */
 369
 370   /* Area announce list. */
 371   struct
 372   {
 373     char *name;
 374     struct access_list *list;
 375   } export;
 376 #define EXPORT_NAME(A)  (A)->export.name
 377 #define EXPORT_LIST(A)  (A)->export.list
 378
 379   /* Area acceptance list. */
 380   struct
 381   {
 382     char *name;
 383     struct access_list *list;
 384   } import;
 385 #define IMPORT_NAME(A)  (A)->import.name
 386 #define IMPORT_LIST(A)  (A)->import.list
 387
 388   /* Type 3 LSA Area prefix-list. */
 389   struct
 390   {
 391     char *name;
 392     struct prefix_list *list;
 393   } plist_in;
 394 #define PREFIX_LIST_IN(A)   (A)->plist_in.list
 395 #define PREFIX_NAME_IN(A)   (A)->plist_in.name
 396
 397   struct
 398   {
 399     char *name;
 400     struct prefix_list *list;
 401   } plist_out;
 402 #define PREFIX_LIST_OUT(A)  (A)->plist_out.list
 403 #define PREFIX_NAME_OUT(A)  (A)->plist_out.name
 404
 405   /* Shortest Path Tree. */
 406   struct vertex *spf;
 407
 408   /* Threads. */
 409   struct thread *t_router_lsa_self;/* Self-originated router-LSA timer. */
 410 #ifdef HAVE_OPAQUE_LSA
 411   struct thread *t_opaque_lsa_self;     /* Type-10 Opaque-LSAs origin. */
 412 #endif /* HAVE_OPAQUE_LSA */
 413
 414   /* Statistics field. */
 415   u_int32_t spf_calculation;    /* SPF Calculation Count. */
 416
 417   /* Router count. */
 418   u_int32_t abr_count;          /* ABR router in this area. */
 419   u_int32_t asbr_count;         /* ASBR router in this area. */
 420
 421   /* Counters. */
 422   u_int32_t act_ints;           /* Active interfaces. */
 423   u_int32_t full_nbrs;          /* Fully adjacent neighbors. */
 424   u_int32_t full_vls;           /* Fully adjacent virtual neighbors. */
 425 };
 426
 427 /* OSPF config network structure. */
 428 struct ospf_network
 429 {
 430   /* Area ID. */
 431   struct in_addr area_id;
 432   int format;
 433 };
 434
 435 /* OSPF NBMA neighbor structure. */
 436 struct ospf_nbr_nbma
 437 {
 438   /* Neighbor IP address. */
 439   struct in_addr addr;
 440
 441   /* OSPF interface. */
 442   struct ospf_interface *oi;
 443
 444   /* OSPF neighbor structure. */
 445   struct ospf_neighbor *nbr;
 446
 447   /* Neighbor priority. */
 448   u_char priority;
 449
 450   /* Poll timer value. */
 451   u_int32_t v_poll;
 452
 453   /* Poll timer thread. */
 454   struct thread *t_poll;
 455
 456   /* State change. */
 457   u_int32_t state_change;
 458 };
 459
 460 /* Macro. */
 461 #define OSPF_AREA_SAME(X,Y) \
 462         (memcmp ((X->area_id), (Y->area_id), IPV4_MAX_BYTELEN) == 0)
 463
 464 #define IS_OSPF_ABR(O)          ((O)->flags & OSPF_FLAG_ABR)
 465 #define IS_OSPF_ASBR(O)         ((O)->flags & OSPF_FLAG_ASBR)
 466
 467 #define OSPF_IS_AREA_ID_BACKBONE(I) ((I).s_addr == OSPF_AREA_BACKBONE)
 468 #define OSPF_IS_AREA_BACKBONE(A) OSPF_IS_AREA_ID_BACKBONE ((A)->area_id)
 469
 470 #ifdef roundup
 471 #  define ROUNDUP(val, gran)    roundup(val, gran)
 472 #else /* roundup */
 473 #  define ROUNDUP(val, gran)    (((val) - 1 | (gran) - 1) + 1)
 474 #endif /* roundup */
 475
 476 #define LSA_OPTIONS_GET(area) \
 477         (((area)->external_routing == OSPF_AREA_DEFAULT) ? OSPF_OPTION_E : 0)
 478 #define LSA_OPTIONS_NSSA_GET(area) \
 479         (((area)->external_routing == OSPF_AREA_NSSA)  ? OSPF_OPTION_NP : 0)
 480
 481 #define OSPF_TIMER_ON(T,F,V)                                                  \
 482     do {                                                                      \
 483       if (!(T))                                                               \
 484         (T) = thread_add_timer (master, (F), ospf, (V));                      \
 485     } while (0)
 486
 487 #define OSPF_AREA_TIMER_ON(T,F,V)                                             \
 488     do {                                                                      \
 489       if (!(T))                                                               \
 490         (T) = thread_add_timer (master, (F), area, (V));                      \
 491     } while (0)
 492
 493 #define OSPF_POLL_TIMER_ON(T,F,V)                                             \
 494     do {                                                                      \
 495       if (!(T))                                                               \
 496         (T) = thread_add_timer (master, (F), nbr_nbma, (V));                  \
 497     } while (0)
 498
 499 #define OSPF_POLL_TIMER_OFF(X)          OSPF_TIMER_OFF((X))
 500
 501 #define OSPF_TIMER_OFF(X)                                                     \
 502     do {                                                                      \
 503       if (X)                                                                  \
 504         {                                                                     \
 505           thread_cancel (X);                                                  \
 506           (X) = NULL;                                                         \
 507         }                                                                     \
 508     } while (0)
 509
 510 /* Extern variables. */
 511 extern struct ospf_master *om;
 512 extern struct message ospf_ism_state_msg[];
 513 extern struct message ospf_nsm_state_msg[];
 514 extern struct message ospf_lsa_type_msg[];
 515 extern struct message ospf_link_state_id_type_msg[];
 516 extern struct message ospf_redistributed_proto[];
 517 extern struct message ospf_network_type_msg[];
 518 extern int ospf_ism_state_msg_max;
 519 extern int ospf_nsm_state_msg_max;
 520 extern int ospf_lsa_type_msg_max;
 521 extern int ospf_link_state_id_type_msg_max;
 522 extern int ospf_redistributed_proto_max;
 523 extern int ospf_network_type_msg_max;
 524 extern struct zclient *zclient;
 525 extern struct thread_master *master;
 526 extern int ospf_zlog;
 527
 528 /* Prototypes. */
 529 extern struct ospf *ospf_lookup (void);
 530 extern struct ospf *ospf_get (void);
 531 extern void ospf_finish (struct ospf *);
 532 extern int ospf_router_id_update_timer (struct thread *);
 533 extern void ospf_router_id_update (struct ospf *ospf);
 534 extern int ospf_network_match_iface (struct connected *, struct prefix *);
 535 extern int ospf_network_set (struct ospf *, struct prefix_ipv4 *,
 536                              struct in_addr);
 537 extern int ospf_network_unset (struct ospf *, struct prefix_ipv4 *,
 538                                struct in_addr);
 539 extern int ospf_area_stub_set (struct ospf *, struct in_addr);
 540 extern int ospf_area_stub_unset (struct ospf *, struct in_addr);
 541 extern int ospf_area_no_summary_set (struct ospf *, struct in_addr);
 542 extern int ospf_area_no_summary_unset (struct ospf *, struct in_addr);
 543 extern int ospf_area_nssa_set (struct ospf *, struct in_addr);
 544 extern int ospf_area_nssa_unset (struct ospf *, struct in_addr);
 545 extern int ospf_area_nssa_translator_role_set (struct ospf *, struct in_addr,
 546                                                int);
 547 extern int ospf_area_export_list_set (struct ospf *, struct ospf_area *,
 548                                       const char *);
 549 extern int ospf_area_export_list_unset (struct ospf *, struct ospf_area *);
 550 extern int ospf_area_import_list_set (struct ospf *, struct ospf_area *,
 551                                       const char *);
 552 extern int ospf_area_import_list_unset (struct ospf *, struct ospf_area *);
 553 extern int ospf_area_shortcut_set (struct ospf *, struct ospf_area *, int);
 554 extern int ospf_area_shortcut_unset (struct ospf *, struct ospf_area *);
 555 extern int ospf_timers_spf_set (struct ospf *, u_int32_t, u_int32_t);
 556 extern int ospf_timers_spf_unset (struct ospf *);
 557 extern int ospf_timers_refresh_set (struct ospf *, int);
 558 extern int ospf_timers_refresh_unset (struct ospf *);
 559 extern int ospf_nbr_nbma_set (struct ospf *, struct in_addr);
 560 extern int ospf_nbr_nbma_unset (struct ospf *, struct in_addr);
 561 extern int ospf_nbr_nbma_priority_set (struct ospf *, struct in_addr, u_char);
 562 extern int ospf_nbr_nbma_priority_unset (struct ospf *, struct in_addr);
 563 extern int ospf_nbr_nbma_poll_interval_set (struct ospf *, struct in_addr,
 564                                             unsigned int);
 565 extern int ospf_nbr_nbma_poll_interval_unset (struct ospf *, struct in_addr);
 566 extern void ospf_prefix_list_update (struct prefix_list *);
 567 extern void ospf_init (void);
 568 extern void ospf_if_update (struct ospf *);
 569 extern void ospf_ls_upd_queue_empty (struct ospf_interface *);
 570 extern void ospf_terminate (void);
 571 extern void ospf_nbr_nbma_if_update (struct ospf *, struct ospf_interface *);
 572 extern struct ospf_nbr_nbma *ospf_nbr_nbma_lookup (struct ospf *,
 573                                                    struct in_addr);
 574 extern struct ospf_nbr_nbma *ospf_nbr_nbma_lookup_next (struct ospf *,
 575                                                         struct in_addr *,
 576                                                         int);
 577 extern int ospf_oi_count (struct interface *);
 578
 579 extern struct ospf_area *ospf_area_get (struct ospf *, struct in_addr, int);
 580 extern void ospf_area_check_free (struct ospf *, struct in_addr);
 581 extern struct ospf_area *ospf_area_lookup_by_area_id (struct ospf *,
 582                                                       struct in_addr);
 583 extern void ospf_area_add_if (struct ospf_area *, struct ospf_interface *);
 584 extern void ospf_area_del_if (struct ospf_area *, struct ospf_interface *);
 585
 586 extern void ospf_route_map_init (void);
 587 extern void ospf_snmp_init (void);
 588
 589 extern void ospf_master_init (void);
 590
 591 #endif /* _ZEBRA_OSPFD_H */