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 #define OSPF_MTU_IGNORE_DEFAULT             0
 109
 110 /* OSPF options. */
 111 #define OSPF_OPTION_T                    0x01  /* TOS. */
 112 #define OSPF_OPTION_E                    0x02
 113 #define OSPF_OPTION_MC                   0x04
 114 #define OSPF_OPTION_NP                   0x08
 115 #define OSPF_OPTION_EA                   0x10
 116 #define OSPF_OPTION_DC                   0x20
 117 #define OSPF_OPTION_O                    0x40
 118
 119 /* OSPF Database Description flags. */
 120 #define OSPF_DD_FLAG_MS                  0x01
 121 #define OSPF_DD_FLAG_M                   0x02
 122 #define OSPF_DD_FLAG_I                   0x04
 123 #define OSPF_DD_FLAG_ALL                 0x07
 124
 125 /* Timer value. */
 126 #define OSPF_ROUTER_ID_UPDATE_DELAY             1
 127
 128 #define OSPF_LS_REFRESH_SHIFT       (60 * 15)
 129 #define OSPF_LS_REFRESH_JITTER      60
 130
 131 /* OSPF master for system wide configuration and variables. */
 132 struct ospf_master
 133 {
 134   /* OSPF instance. */
 135   struct list *ospf;
 136
 137   /* OSPF thread master. */
 138   struct thread_master *master;
 139
 140   /* Zebra interface list. */
 141   struct list *iflist;
 142
 143   /* Redistributed external information. */
 144   struct route_table *external_info[ZEBRA_ROUTE_MAX + 1];
 145 #define EXTERNAL_INFO(T)      om->external_info[T]
 146
 147   /* OSPF start time. */
 148   time_t start_time;
 149
 150   /* Various OSPF global configuration. */
 151   u_char options;
 152 };
 153
 154 /* OSPF instance structure. */
 155 struct ospf
 156 {
 157   /* OSPF Router ID. */
 158   struct in_addr router_id;             /* Configured automatically. */
 159   struct in_addr router_id_static;      /* Configured manually. */
 160
 161   /* ABR/ASBR internal flags. */
 162   u_char flags;
 163 #define OSPF_FLAG_ABR           0x0001
 164 #define OSPF_FLAG_ASBR          0x0002
 165
 166   /* ABR type. */
 167   u_char abr_type;
 168 #define OSPF_ABR_UNKNOWN        0
 169 #define OSPF_ABR_STAND          1
 170 #define OSPF_ABR_IBM            2
 171 #define OSPF_ABR_CISCO          3
 172 #define OSPF_ABR_SHORTCUT       4
 173 #define OSPF_ABR_DEFAULT        OSPF_ABR_CISCO
 174
 175   /* NSSA ABR */
 176   u_char anyNSSA;               /* Bump for every NSSA attached. */
 177
 178   /* Configured variables. */
 179   u_char config;
 180 #define OSPF_RFC1583_COMPATIBLE         (1 << 0)
 181 #define OSPF_OPAQUE_CAPABLE             (1 << 2)
 182
 183 #ifdef HAVE_OPAQUE_LSA
 184   /* Opaque-LSA administrative flags. */
 185   u_char opaque;
 186 #define OPAQUE_OPERATION_READY_BIT      (1 << 0)
 187 #define OPAQUE_BLOCK_TYPE_09_LSA_BIT    (1 << 1)
 188 #define OPAQUE_BLOCK_TYPE_10_LSA_BIT    (1 << 2)
 189 #define OPAQUE_BLOCK_TYPE_11_LSA_BIT    (1 << 3)
 190 #endif /* HAVE_OPAQUE_LSA */
 191
 192   int spf_delay;                        /* SPF delay time. */
 193   int spf_holdtime;                     /* SPF hold time. */
 194   int default_originate;                /* Default information originate. */
 195 #define DEFAULT_ORIGINATE_NONE          0
 196 #define DEFAULT_ORIGINATE_ZEBRA         1
 197 #define DEFAULT_ORIGINATE_ALWAYS        2
 198   u_int32_t ref_bandwidth;              /* Reference Bandwidth (Kbps). */
 199   struct route_table *networks;         /* OSPF config networks. */
 200   struct list *vlinks;                  /* Configured Virtual-Links. */
 201   struct list *areas;                   /* OSPF areas. */
 202   struct route_table *nbr_nbma;
 203   struct ospf_area *backbone;           /* Pointer to the Backbone Area. */
 204
 205   struct list *oiflist;                 /* ospf interfaces */
 206
 207   /* LSDB of AS-external-LSAs. */
 208   struct ospf_lsdb *lsdb;
 209
 210   /* Flags. */
 211   int external_origin;                  /* AS-external-LSA origin flag. */
 212   int ase_calc;                         /* ASE calculation flag. */
 213
 214 #ifdef HAVE_OPAQUE_LSA
 215   struct list *opaque_lsa_self;         /* Type-11 Opaque-LSAs */
 216 #endif /* HAVE_OPAQUE_LSA */
 217
 218   /* Routing tables. */
 219   struct route_table *old_table;        /* Old routing table. */
 220   struct route_table *new_table;        /* Current routing table. */
 221
 222   struct route_table *old_rtrs;         /* Old ABR/ASBR RT. */
 223   struct route_table *new_rtrs;         /* New ABR/ASBR RT. */
 224
 225   struct route_table *new_external_route;   /* New External Route. */
 226   struct route_table *old_external_route;   /* Old External Route. */
 227
 228   struct route_table *external_lsas;    /* Database of external LSAs,
 229                                            prefix is LSA's adv. network*/
 230
 231   /* Time stamps. */
 232   time_t ts_spf;                        /* SPF calculation time stamp. */
 233
 234   struct list *maxage_lsa;              /* List of MaxAge LSA for deletion. */
 235   int redistribute;                     /* Num of redistributed protocols. */
 236
 237   /* Threads. */
 238   struct thread *t_router_id_update;    /* Router ID update timer. */
 239   struct thread *t_router_lsa_update;   /* router-LSA update timer. */
 240   struct thread *t_abr_task;            /* ABR task timer. */
 241   struct thread *t_asbr_check;          /* ASBR check timer. */
 242   struct thread *t_distribute_update;   /* Distirbute list update timer. */
 243   struct thread *t_spf_calc;            /* SPF calculation timer. */
 244   struct thread *t_ase_calc;            /* ASE calculation timer. */
 245   struct thread *t_external_lsa;        /* AS-external-LSA origin timer. */
 246 #ifdef HAVE_OPAQUE_LSA
 247   struct thread *t_opaque_lsa_self;     /* Type-11 Opaque-LSAs origin event. */
 248 #endif /* HAVE_OPAQUE_LSA */
 249   struct thread *t_maxage;              /* MaxAge LSA remover timer. */
 250   struct thread *t_maxage_walker;       /* MaxAge LSA checking timer. */
 251
 252   struct thread *t_write;
 253   struct thread *t_read;
 254   int fd;
 255   struct stream *ibuf;
 256   struct list *oi_write_q;
 257
 258   /* Distribute lists out of other route sources. */
 259   struct
 260   {
 261     char *name;
 262     struct access_list *list;
 263   } dlist[ZEBRA_ROUTE_MAX];
 264 #define DISTRIBUTE_NAME(O,T)    (O)->dlist[T].name
 265 #define DISTRIBUTE_LIST(O,T)    (O)->dlist[T].list
 266
 267   /* Redistribute metric info. */
 268   struct
 269   {
 270     int type;                   /* External metric type (E1 or E2).  */
 271     int value;                  /* Value for static metric (24-bit).
 272                                    -1 means metric value is not set. */
 273   } dmetric [ZEBRA_ROUTE_MAX + 1];
 274
 275   /* For redistribute route map. */
 276   struct
 277   {
 278     char *name;
 279     struct route_map *map;
 280   } route_map [ZEBRA_ROUTE_MAX + 1]; /* +1 is for default-information */
 281 #define ROUTEMAP_NAME(O,T)   (O)->route_map[T].name
 282 #define ROUTEMAP(O,T)        (O)->route_map[T].map
 283
 284   int default_metric;           /* Default metric for redistribute. */
 285
 286 #define OSPF_LSA_REFRESHER_GRANULARITY 10
 287 #define OSPF_LSA_REFRESHER_SLOTS ((OSPF_LS_REFRESH_TIME + \
 288                                   OSPF_LS_REFRESH_SHIFT)/10 + 1)
 289   struct
 290   {
 291     u_int16_t index;
 292     struct list *qs[OSPF_LSA_REFRESHER_SLOTS];
 293   } lsa_refresh_queue;
 294
 295   struct thread *t_lsa_refresher;
 296   time_t lsa_refresher_started;
 297 #define OSPF_LSA_REFRESH_INTERVAL_DEFAULT 10
 298   u_int16_t lsa_refresh_interval;
 299
 300   /* Distance parameter. */
 301   u_char distance_all;
 302   u_char distance_intra;
 303   u_char distance_inter;
 304   u_char distance_external;
 305
 306   /* Statistics for LSA origination. */
 307   u_int32_t lsa_originate_count;
 308
 309   /* Statistics for LSA used for new instantiation. */
 310   u_int32_t rx_lsa_count;
 311
 312   struct route_table *distance_table;
 313 };
 314
 315 /* OSPF area structure. */
 316 struct ospf_area
 317 {
 318   /* OSPF instance. */
 319   struct ospf *ospf;
 320
 321   /* Zebra interface list belonging to the area. */
 322   struct list *oiflist;
 323
 324   /* Area ID. */
 325   struct in_addr area_id;
 326
 327   /* Area ID format. */
 328   char format;
 329 #define OSPF_AREA_ID_FORMAT_ADDRESS         1
 330 #define OSPF_AREA_ID_FORMAT_DECIMAL         2
 331
 332   /* Address range. */
 333   struct list *address_range;
 334
 335   /* Configured variables. */
 336   int external_routing;                 /* ExternalRoutingCapability. */
 337 #define OSPF_AREA_DEFAULT       0
 338 #define OSPF_AREA_STUB          1
 339 #define OSPF_AREA_NSSA          2
 340 #define OSPF_AREA_TYPE_MAX      3
 341   int no_summary;                       /* Don't inject summaries into stub.*/
 342   int shortcut_configured;              /* Area configured as shortcut. */
 343 #define OSPF_SHORTCUT_DEFAULT   0
 344 #define OSPF_SHORTCUT_ENABLE    1
 345 #define OSPF_SHORTCUT_DISABLE   2
 346   int shortcut_capability;              /* Other ABRs agree on S-bit */
 347   u_int32_t default_cost;               /* StubDefaultCost. */
 348   int auth_type;                        /* Authentication type. */
 349
 350   u_char NSSATranslatorRole;          /* NSSA configured role */
 351 #define OSPF_NSSA_ROLE_NEVER     0
 352 #define OSPF_NSSA_ROLE_CANDIDATE 1
 353 #define OSPF_NSSA_ROLE_ALWAYS    2
 354   u_char NSSATranslatorState;              /* NSSA operational role */
 355 #define OSPF_NSSA_TRANSLATE_DISABLED 0
 356 #define OSPF_NSSA_TRANSLATE_ENABLED  1
 357   int NSSATranslatorStabilityInterval;
 358
 359   u_char transit;                       /* TransitCapability. */
 360 #define OSPF_TRANSIT_FALSE      0
 361 #define OSPF_TRANSIT_TRUE       1
 362   struct route_table *ranges;           /* Configured Area Ranges. */
 363
 364   /* Area related LSDBs[Type1-4]. */
 365   struct ospf_lsdb *lsdb;
 366
 367   /* Self-originated LSAs. */
 368   struct ospf_lsa *router_lsa_self;
 369 #ifdef HAVE_OPAQUE_LSA
 370   struct list *opaque_lsa_self;         /* Type-10 Opaque-LSAs */
 371 #endif /* HAVE_OPAQUE_LSA */
 372
 373   /* Area announce list. */
 374   struct
 375   {
 376     char *name;
 377     struct access_list *list;
 378   } export;
 379 #define EXPORT_NAME(A)  (A)->export.name
 380 #define EXPORT_LIST(A)  (A)->export.list
 381
 382   /* Area acceptance list. */
 383   struct
 384   {
 385     char *name;
 386     struct access_list *list;
 387   } import;
 388 #define IMPORT_NAME(A)  (A)->import.name
 389 #define IMPORT_LIST(A)  (A)->import.list
 390
 391   /* Type 3 LSA Area prefix-list. */
 392   struct
 393   {
 394     char *name;
 395     struct prefix_list *list;
 396   } plist_in;
 397 #define PREFIX_LIST_IN(A)   (A)->plist_in.list
 398 #define PREFIX_NAME_IN(A)   (A)->plist_in.name
 399
 400   struct
 401   {
 402     char *name;
 403     struct prefix_list *list;
 404   } plist_out;
 405 #define PREFIX_LIST_OUT(A)  (A)->plist_out.list
 406 #define PREFIX_NAME_OUT(A)  (A)->plist_out.name
 407
 408   /* Shortest Path Tree. */
 409   struct vertex *spf;
 410
 411   /* Threads. */
 412   struct thread *t_router_lsa_self;/* Self-originated router-LSA timer. */
 413 #ifdef HAVE_OPAQUE_LSA
 414   struct thread *t_opaque_lsa_self;     /* Type-10 Opaque-LSAs origin. */
 415 #endif /* HAVE_OPAQUE_LSA */
 416
 417   /* Statistics field. */
 418   u_int32_t spf_calculation;    /* SPF Calculation Count. */
 419
 420   /* Router count. */
 421   u_int32_t abr_count;          /* ABR router in this area. */
 422   u_int32_t asbr_count;         /* ASBR router in this area. */
 423
 424   /* Counters. */
 425   u_int32_t act_ints;           /* Active interfaces. */
 426   u_int32_t full_nbrs;          /* Fully adjacent neighbors. */
 427   u_int32_t full_vls;           /* Fully adjacent virtual neighbors. */
 428 };
 429
 430 /* OSPF config network structure. */
 431 struct ospf_network
 432 {
 433   /* Area ID. */
 434   struct in_addr area_id;
 435   int format;
 436 };
 437
 438 /* OSPF NBMA neighbor structure. */
 439 struct ospf_nbr_nbma
 440 {
 441   /* Neighbor IP address. */
 442   struct in_addr addr;
 443
 444   /* OSPF interface. */
 445   struct ospf_interface *oi;
 446
 447   /* OSPF neighbor structure. */
 448   struct ospf_neighbor *nbr;
 449
 450   /* Neighbor priority. */
 451   u_char priority;
 452
 453   /* Poll timer value. */
 454   u_int32_t v_poll;
 455
 456   /* Poll timer thread. */
 457   struct thread *t_poll;
 458
 459   /* State change. */
 460   u_int32_t state_change;
 461 };
 462
 463 /* Macro. */
 464 #define OSPF_AREA_SAME(X,Y) \
 465         (memcmp ((X->area_id), (Y->area_id), IPV4_MAX_BYTELEN) == 0)
 466
 467 #define IS_OSPF_ABR(O)          ((O)->flags & OSPF_FLAG_ABR)
 468 #define IS_OSPF_ASBR(O)         ((O)->flags & OSPF_FLAG_ASBR)
 469
 470 #define OSPF_IS_AREA_ID_BACKBONE(I) ((I).s_addr == OSPF_AREA_BACKBONE)
 471 #define OSPF_IS_AREA_BACKBONE(A) OSPF_IS_AREA_ID_BACKBONE ((A)->area_id)
 472
 473 #ifdef roundup
 474 #  define ROUNDUP(val, gran)    roundup(val, gran)
 475 #else /* roundup */
 476 #  define ROUNDUP(val, gran)    (((val) - 1 | (gran) - 1) + 1)
 477 #endif /* roundup */
 478
 479 #define LSA_OPTIONS_GET(area) \
 480         (((area)->external_routing == OSPF_AREA_DEFAULT) ? OSPF_OPTION_E : 0)
 481 #define LSA_OPTIONS_NSSA_GET(area) \
 482         (((area)->external_routing == OSPF_AREA_NSSA)  ? OSPF_OPTION_NP : 0)
 483
 484 #define OSPF_TIMER_ON(T,F,V)                                                  \
 485     do {                                                                      \
 486       if (!(T))                                                               \
 487         (T) = thread_add_timer (master, (F), ospf, (V));                      \
 488     } while (0)
 489
 490 #define OSPF_AREA_TIMER_ON(T,F,V)                                             \
 491     do {                                                                      \
 492       if (!(T))                                                               \
 493         (T) = thread_add_timer (master, (F), area, (V));                      \
 494     } while (0)
 495
 496 #define OSPF_POLL_TIMER_ON(T,F,V)                                             \
 497     do {                                                                      \
 498       if (!(T))                                                               \
 499         (T) = thread_add_timer (master, (F), nbr_nbma, (V));                  \
 500     } while (0)
 501
 502 #define OSPF_POLL_TIMER_OFF(X)          OSPF_TIMER_OFF((X))
 503
 504 #define OSPF_TIMER_OFF(X)                                                     \
 505     do {                                                                      \
 506       if (X)                                                                  \
 507         {                                                                     \
 508           thread_cancel (X);                                                  \
 509           (X) = NULL;                                                         \
 510         }                                                                     \
 511     } while (0)
 512
 513 /* Extern variables. */
 514 extern struct ospf_master *om;
 515 extern struct message ospf_ism_state_msg[];
 516 extern struct message ospf_nsm_state_msg[];
 517 extern struct message ospf_lsa_type_msg[];
 518 extern struct message ospf_link_state_id_type_msg[];
 519 extern struct message ospf_network_type_msg[];
 520 extern int ospf_ism_state_msg_max;
 521 extern int ospf_nsm_state_msg_max;
 522 extern int ospf_lsa_type_msg_max;
 523 extern int ospf_link_state_id_type_msg_max;
 524 extern int ospf_redistributed_proto_max;
 525 extern int ospf_network_type_msg_max;
 526 extern struct zclient *zclient;
 527 extern struct thread_master *master;
 528 extern int ospf_zlog;
 529
 530 /* Prototypes. */
 531 extern const char *ospf_redist_string(u_int route_type);
 532 extern struct ospf *ospf_lookup (void);
 533 extern struct ospf *ospf_get (void);
 534 extern void ospf_finish (struct ospf *);
 535 extern int ospf_router_id_update_timer (struct thread *);
 536 extern void ospf_router_id_update (struct ospf *ospf);
 537 extern int ospf_network_match_iface (struct connected *, struct prefix *);
 538 extern int ospf_network_set (struct ospf *, struct prefix_ipv4 *,
 539                              struct in_addr);
 540 extern int ospf_network_unset (struct ospf *, struct prefix_ipv4 *,
 541                                struct in_addr);
 542 extern int ospf_area_stub_set (struct ospf *, struct in_addr);
 543 extern int ospf_area_stub_unset (struct ospf *, struct in_addr);
 544 extern int ospf_area_no_summary_set (struct ospf *, struct in_addr);
 545 extern int ospf_area_no_summary_unset (struct ospf *, struct in_addr);
 546 extern int ospf_area_nssa_set (struct ospf *, struct in_addr);
 547 extern int ospf_area_nssa_unset (struct ospf *, struct in_addr);
 548 extern int ospf_area_nssa_translator_role_set (struct ospf *, struct in_addr,
 549                                                int);
 550 extern int ospf_area_export_list_set (struct ospf *, struct ospf_area *,
 551                                       const char *);
 552 extern int ospf_area_export_list_unset (struct ospf *, struct ospf_area *);
 553 extern int ospf_area_import_list_set (struct ospf *, struct ospf_area *,
 554                                       const char *);
 555 extern int ospf_area_import_list_unset (struct ospf *, struct ospf_area *);
 556 extern int ospf_area_shortcut_set (struct ospf *, struct ospf_area *, int);
 557 extern int ospf_area_shortcut_unset (struct ospf *, struct ospf_area *);
 558 extern int ospf_timers_spf_set (struct ospf *, u_int32_t, u_int32_t);
 559 extern int ospf_timers_spf_unset (struct ospf *);
 560 extern int ospf_timers_refresh_set (struct ospf *, int);
 561 extern int ospf_timers_refresh_unset (struct ospf *);
 562 extern int ospf_nbr_nbma_set (struct ospf *, struct in_addr);
 563 extern int ospf_nbr_nbma_unset (struct ospf *, struct in_addr);
 564 extern int ospf_nbr_nbma_priority_set (struct ospf *, struct in_addr, u_char);
 565 extern int ospf_nbr_nbma_priority_unset (struct ospf *, struct in_addr);
 566 extern int ospf_nbr_nbma_poll_interval_set (struct ospf *, struct in_addr,
 567                                             unsigned int);
 568 extern int ospf_nbr_nbma_poll_interval_unset (struct ospf *, struct in_addr);
 569 extern void ospf_prefix_list_update (struct prefix_list *);
 570 extern void ospf_init (void);
 571 extern void ospf_if_update (struct ospf *);
 572 extern void ospf_ls_upd_queue_empty (struct ospf_interface *);
 573 extern void ospf_terminate (void);
 574 extern void ospf_nbr_nbma_if_update (struct ospf *, struct ospf_interface *);
 575 extern struct ospf_nbr_nbma *ospf_nbr_nbma_lookup (struct ospf *,
 576                                                    struct in_addr);
 577 extern struct ospf_nbr_nbma *ospf_nbr_nbma_lookup_next (struct ospf *,
 578                                                         struct in_addr *,
 579                                                         int);
 580 extern int ospf_oi_count (struct interface *);
 581
 582 extern struct ospf_area *ospf_area_get (struct ospf *, struct in_addr, int);
 583 extern void ospf_area_check_free (struct ospf *, struct in_addr);
 584 extern struct ospf_area *ospf_area_lookup_by_area_id (struct ospf *,
 585                                                       struct in_addr);
 586 extern void ospf_area_add_if (struct ospf_area *, struct ospf_interface *);
 587 extern void ospf_area_del_if (struct ospf_area *, struct ospf_interface *);
 588
 589 extern void ospf_route_map_init (void);
 590 extern void ospf_snmp_init (void);
 591
 592 extern void ospf_master_init (void);
 593
 594 #endif /* _ZEBRA_OSPFD_H */