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 <zebra.h>
  27 #include "libospf.h"
  28
  29 #include "filter.h"
  30 #include "log.h"
  31
  32 #define OSPF_VERSION            2
  33
  34 /* VTY port number. */
  35 #define OSPF_VTY_PORT          2604
  36
  37 /* IP TTL for OSPF protocol. */
  38 #define OSPF_IP_TTL             1
  39 #define OSPF_VL_IP_TTL          100
  40
  41 /* Default configuration file name for ospfd. */
  42 #define OSPF_DEFAULT_CONFIG   "ospfd.conf"
  43
  44 #define OSPF_NSSA_TRANS_STABLE_DEFAULT          40
  45
  46 #define OSPF_ALLSPFROUTERS              0xe0000005      /* 224.0.0.5 */
  47 #define OSPF_ALLDROUTERS                0xe0000006      /* 224.0.0.6 */
  48
  49
  50 /* OSPF Authentication Type. */
  51 #define OSPF_AUTH_NULL                      0
  52 #define OSPF_AUTH_SIMPLE                    1
  53 #define OSPF_AUTH_CRYPTOGRAPHIC             2
  54 /* For Interface authentication setting default */
  55 #define OSPF_AUTH_NOTSET                   -1
  56 /* For the consumption and sanity of the command handler */
  57 /* DO NIOT REMOVE!!! Need to detect whether a value has
  58    been given or not in VLink command handlers */
  59 #define OSPF_AUTH_CMD_NOTSEEN              -2
  60
  61 /* OSPF options. */
  62 #define OSPF_OPTION_T                    0x01  /* TOS. */
  63 #define OSPF_OPTION_E                    0x02
  64 #define OSPF_OPTION_MC                   0x04
  65 #define OSPF_OPTION_NP                   0x08
  66 #define OSPF_OPTION_EA                   0x10
  67 #define OSPF_OPTION_DC                   0x20
  68 #define OSPF_OPTION_O                    0x40
  69
  70 /* OSPF Database Description flags. */
  71 #define OSPF_DD_FLAG_MS                  0x01
  72 #define OSPF_DD_FLAG_M                   0x02
  73 #define OSPF_DD_FLAG_I                   0x04
  74 #define OSPF_DD_FLAG_ALL                 0x07
  75
  76 #define OSPF_LS_REFRESH_SHIFT       (60 * 15)
  77 #define OSPF_LS_REFRESH_JITTER      60
  78
  79 /* OSPF master for system wide configuration and variables. */
  80 struct ospf_master
  81 {
  82   /* OSPF instance. */
  83   struct list *ospf;
  84
  85   /* OSPF thread master. */
  86   struct thread_master *master;
  87
  88   /* Zebra interface list. */
  89   struct list *iflist;
  90
  91   /* Redistributed external information. */
  92   struct route_table *external_info[ZEBRA_ROUTE_MAX + 1];
  93 #define EXTERNAL_INFO(T)      om->external_info[T]
  94
  95   /* OSPF start time. */
  96   time_t start_time;
  97
  98   /* Various OSPF global configuration. */
  99   u_char options;
 100 #define OSPF_MASTER_SHUTDOWN (1 << 0) /* deferred-shutdown */
 101 };
 102
 103 /* OSPF instance structure. */
 104 struct ospf
 105 {
 106   /* OSPF Router ID. */
 107   struct in_addr router_id;             /* Configured automatically. */
 108   struct in_addr router_id_static;      /* Configured manually. */
 109
 110   /* ABR/ASBR internal flags. */
 111   u_char flags;
 112 #define OSPF_FLAG_ABR           0x0001
 113 #define OSPF_FLAG_ASBR          0x0002
 114
 115   /* ABR type. */
 116   u_char abr_type;
 117 #define OSPF_ABR_UNKNOWN        0
 118 #define OSPF_ABR_STAND          1
 119 #define OSPF_ABR_IBM            2
 120 #define OSPF_ABR_CISCO          3
 121 #define OSPF_ABR_SHORTCUT       4
 122 #define OSPF_ABR_DEFAULT        OSPF_ABR_CISCO
 123
 124   /* NSSA ABR */
 125   u_char anyNSSA;               /* Bump for every NSSA attached. */
 126
 127   /* Configured variables. */
 128   u_char config;
 129 #define OSPF_RFC1583_COMPATIBLE         (1 << 0)
 130 #define OSPF_OPAQUE_CAPABLE             (1 << 2)
 131 #define OSPF_LOG_ADJACENCY_CHANGES      (1 << 3)
 132 #define OSPF_LOG_ADJACENCY_DETAIL       (1 << 4)
 133
 134 #ifdef HAVE_OPAQUE_LSA
 135   /* Opaque-LSA administrative flags. */
 136   u_char opaque;
 137 #define OPAQUE_OPERATION_READY_BIT      (1 << 0)
 138 #define OPAQUE_BLOCK_TYPE_09_LSA_BIT    (1 << 1)
 139 #define OPAQUE_BLOCK_TYPE_10_LSA_BIT    (1 << 2)
 140 #define OPAQUE_BLOCK_TYPE_11_LSA_BIT    (1 << 3)
 141 #endif /* HAVE_OPAQUE_LSA */
 142
 143   /* RFC3137 stub router. Configured time to stay stub / max-metric */
 144   unsigned int stub_router_startup_time;        /* seconds */
 145   unsigned int stub_router_shutdown_time;       /* seconds */
 146 #define OSPF_STUB_ROUTER_UNCONFIGURED     0
 147   u_char       stub_router_admin_set;
 148 #define OSPF_STUB_ROUTER_ADMINISTRATIVE_SET     1
 149 #define OSPF_STUB_ROUTER_ADMINISTRATIVE_UNSET   0
 150
 151 #define OSPF_STUB_MAX_METRIC_SUMMARY_COST       0x00ff0000
 152
 153   /* SPF parameters */
 154   unsigned int spf_delay;               /* SPF delay time. */
 155   unsigned int spf_holdtime;            /* SPF hold time. */
 156   unsigned int spf_max_holdtime;        /* SPF maximum-holdtime */
 157   unsigned int spf_hold_multiplier;     /* Adaptive multiplier for hold time */
 158
 159   int default_originate;                /* Default information originate. */
 160 #define DEFAULT_ORIGINATE_NONE          0
 161 #define DEFAULT_ORIGINATE_ZEBRA         1
 162 #define DEFAULT_ORIGINATE_ALWAYS        2
 163   u_int32_t ref_bandwidth;              /* Reference Bandwidth (Kbps). */
 164   struct route_table *networks;         /* OSPF config networks. */
 165   struct list *vlinks;                  /* Configured Virtual-Links. */
 166   struct list *areas;                   /* OSPF areas. */
 167   struct route_table *nbr_nbma;
 168   struct ospf_area *backbone;           /* Pointer to the Backbone Area. */
 169
 170   struct list *oiflist;                 /* ospf interfaces */
 171   u_char passive_interface_default;     /* passive-interface default */
 172
 173   /* LSDB of AS-external-LSAs. */
 174   struct ospf_lsdb *lsdb;
 175
 176   /* Flags. */
 177   int external_origin;                  /* AS-external-LSA origin flag. */
 178   int ase_calc;                         /* ASE calculation flag. */
 179
 180 #ifdef HAVE_OPAQUE_LSA
 181   struct list *opaque_lsa_self;         /* Type-11 Opaque-LSAs */
 182 #endif /* HAVE_OPAQUE_LSA */
 183
 184   /* Routing tables. */
 185   struct route_table *old_table;        /* Old routing table. */
 186   struct route_table *new_table;        /* Current routing table. */
 187
 188   struct route_table *old_rtrs;         /* Old ABR/ASBR RT. */
 189   struct route_table *new_rtrs;         /* New ABR/ASBR RT. */
 190
 191   struct route_table *new_external_route;   /* New External Route. */
 192   struct route_table *old_external_route;   /* Old External Route. */
 193
 194   struct route_table *external_lsas;    /* Database of external LSAs,
 195                                            prefix is LSA's adv. network*/
 196
 197   /* Time stamps. */
 198   struct timeval ts_spf;                /* SPF calculation time stamp. */
 199
 200   struct route_table *maxage_lsa;       /* List of MaxAge LSA for deletion. */
 201   int redistribute;                     /* Num of redistributed protocols. */
 202
 203   /* Threads. */
 204   struct thread *t_abr_task;            /* ABR task timer. */
 205   struct thread *t_asbr_check;          /* ASBR check timer. */
 206   struct thread *t_distribute_update;   /* Distirbute list update timer. */
 207   struct thread *t_spf_calc;            /* SPF calculation timer. */
 208   struct thread *t_ase_calc;            /* ASE calculation timer. */
 209   struct thread *t_external_lsa;        /* AS-external-LSA origin timer. */
 210 #ifdef HAVE_OPAQUE_LSA
 211   struct thread *t_opaque_lsa_self;     /* Type-11 Opaque-LSAs origin event. */
 212 #endif /* HAVE_OPAQUE_LSA */
 213
 214 #define OSFP_LSA_MAXAGE_REMOVE_DELAY_DEFAULT    60
 215   unsigned int maxage_delay;            /* Delay on Maxage remover timer, sec */
 216   struct thread *t_maxage;              /* MaxAge LSA remover timer. */
 217 #define OSPF_LSA_MAXAGE_CHECK_INTERVAL          30
 218   struct thread *t_maxage_walker;       /* MaxAge LSA checking timer. */
 219
 220   struct thread *t_deferred_shutdown;   /* deferred/stub-router shutdown timer*/
 221
 222   struct thread *t_write;
 223   struct thread *t_read;
 224   int fd;
 225   unsigned int maxsndbuflen;
 226   struct stream *ibuf;
 227   struct list *oi_write_q;
 228
 229   /* Distribute lists out of other route sources. */
 230   struct
 231   {
 232     char *name;
 233     struct access_list *list;
 234   } dlist[ZEBRA_ROUTE_MAX];
 235 #define DISTRIBUTE_NAME(O,T)    (O)->dlist[T].name
 236 #define DISTRIBUTE_LIST(O,T)    (O)->dlist[T].list
 237
 238   /* Redistribute metric info. */
 239   struct
 240   {
 241     int type;                   /* External metric type (E1 or E2).  */
 242     int value;                  /* Value for static metric (24-bit).
 243                                    -1 means metric value is not set. */
 244   } dmetric [ZEBRA_ROUTE_MAX + 1];
 245
 246   /* For redistribute route map. */
 247   struct
 248   {
 249     char *name;
 250     struct route_map *map;
 251   } route_map [ZEBRA_ROUTE_MAX + 1]; /* +1 is for default-information */
 252 #define ROUTEMAP_NAME(O,T)   (O)->route_map[T].name
 253 #define ROUTEMAP(O,T)        (O)->route_map[T].map
 254
 255   int default_metric;           /* Default metric for redistribute. */
 256
 257 #define OSPF_LSA_REFRESHER_GRANULARITY 10
 258 #define OSPF_LSA_REFRESHER_SLOTS ((OSPF_LS_REFRESH_TIME + \
 259                                   OSPF_LS_REFRESH_SHIFT)/10 + 1)
 260   struct
 261   {
 262     u_int16_t index;
 263     struct list *qs[OSPF_LSA_REFRESHER_SLOTS];
 264   } lsa_refresh_queue;
 265
 266   struct thread *t_lsa_refresher;
 267   time_t lsa_refresher_started;
 268 #define OSPF_LSA_REFRESH_INTERVAL_DEFAULT 10
 269   u_int16_t lsa_refresh_interval;
 270
 271   /* Distance parameter. */
 272   u_char distance_all;
 273   u_char distance_intra;
 274   u_char distance_inter;
 275   u_char distance_external;
 276
 277   /* Statistics for LSA origination. */
 278   u_int32_t lsa_originate_count;
 279
 280   /* Statistics for LSA used for new instantiation. */
 281   u_int32_t rx_lsa_count;
 282
 283   struct route_table *distance_table;
 284 };
 285
 286 /* OSPF area structure. */
 287 struct ospf_area
 288 {
 289   /* OSPF instance. */
 290   struct ospf *ospf;
 291
 292   /* Zebra interface list belonging to the area. */
 293   struct list *oiflist;
 294
 295   /* Area ID. */
 296   struct in_addr area_id;
 297
 298   /* Area ID format. */
 299   char format;
 300 #define OSPF_AREA_ID_FORMAT_ADDRESS         1
 301 #define OSPF_AREA_ID_FORMAT_DECIMAL         2
 302
 303   /* Address range. */
 304   struct list *address_range;
 305
 306   /* Configured variables. */
 307   int external_routing;                 /* ExternalRoutingCapability. */
 308 #define OSPF_AREA_DEFAULT       0
 309 #define OSPF_AREA_STUB          1
 310 #define OSPF_AREA_NSSA          2
 311 #define OSPF_AREA_TYPE_MAX      3
 312   int no_summary;                       /* Don't inject summaries into stub.*/
 313   int shortcut_configured;              /* Area configured as shortcut. */
 314 #define OSPF_SHORTCUT_DEFAULT   0
 315 #define OSPF_SHORTCUT_ENABLE    1
 316 #define OSPF_SHORTCUT_DISABLE   2
 317   int shortcut_capability;              /* Other ABRs agree on S-bit */
 318   u_int32_t default_cost;               /* StubDefaultCost. */
 319   int auth_type;                        /* Authentication type. */
 320
 321
 322   u_char NSSATranslatorRole;          /* NSSA configured role */
 323 #define OSPF_NSSA_ROLE_NEVER     0
 324 #define OSPF_NSSA_ROLE_CANDIDATE 1
 325 #define OSPF_NSSA_ROLE_ALWAYS    2
 326   u_char NSSATranslatorState;              /* NSSA operational role */
 327 #define OSPF_NSSA_TRANSLATE_DISABLED 0
 328 #define OSPF_NSSA_TRANSLATE_ENABLED  1
 329   int NSSATranslatorStabilityInterval;
 330
 331   u_char transit;                       /* TransitCapability. */
 332 #define OSPF_TRANSIT_FALSE      0
 333 #define OSPF_TRANSIT_TRUE       1
 334   struct route_table *ranges;           /* Configured Area Ranges. */
 335
 336   /* RFC3137 stub router state flags for area */
 337   u_char stub_router_state;
 338 #define OSPF_AREA_ADMIN_STUB_ROUTED     (1 << 0) /* admin stub-router set */
 339 #define OSPF_AREA_IS_STUB_ROUTED        (1 << 1) /* stub-router active */
 340 #define OSPF_AREA_WAS_START_STUB_ROUTED (1 << 2) /* startup SR was done */
 341
 342   /* Area related LSDBs[Type1-4]. */
 343   struct ospf_lsdb *lsdb;
 344
 345   /* Self-originated LSAs. */
 346   struct ospf_lsa *router_lsa_self;
 347 #ifdef HAVE_OPAQUE_LSA
 348   struct list *opaque_lsa_self;         /* Type-10 Opaque-LSAs */
 349 #endif /* HAVE_OPAQUE_LSA */
 350
 351   /* Area announce list. */
 352   struct
 353   {
 354     char *name;
 355     struct access_list *list;
 356   } _export;
 357 #define EXPORT_NAME(A)  (A)->_export.name
 358 #define EXPORT_LIST(A)  (A)->_export.list
 359
 360   /* Area acceptance list. */
 361   struct
 362   {
 363     char *name;
 364     struct access_list *list;
 365   } import;
 366 #define IMPORT_NAME(A)  (A)->import.name
 367 #define IMPORT_LIST(A)  (A)->import.list
 368
 369   /* Type 3 LSA Area prefix-list. */
 370   struct
 371   {
 372     char *name;
 373     struct prefix_list *list;
 374   } plist_in;
 375 #define PREFIX_LIST_IN(A)   (A)->plist_in.list
 376 #define PREFIX_NAME_IN(A)   (A)->plist_in.name
 377
 378   struct
 379   {
 380     char *name;
 381     struct prefix_list *list;
 382   } plist_out;
 383 #define PREFIX_LIST_OUT(A)  (A)->plist_out.list
 384 #define PREFIX_NAME_OUT(A)  (A)->plist_out.name
 385
 386   /* Shortest Path Tree. */
 387   struct vertex *spf;
 388
 389   /* Threads. */
 390   struct thread *t_stub_router;    /* Stub-router timer */
 391 #ifdef HAVE_OPAQUE_LSA
 392   struct thread *t_opaque_lsa_self;     /* Type-10 Opaque-LSAs origin. */
 393 #endif /* HAVE_OPAQUE_LSA */
 394
 395   /* Statistics field. */
 396   u_int32_t spf_calculation;    /* SPF Calculation Count. */
 397
 398   /* Router count. */
 399   u_int32_t abr_count;          /* ABR router in this area. */
 400   u_int32_t asbr_count;         /* ASBR router in this area. */
 401
 402   /* Counters. */
 403   u_int32_t act_ints;           /* Active interfaces. */
 404   u_int32_t full_nbrs;          /* Fully adjacent neighbors. */
 405   u_int32_t full_vls;           /* Fully adjacent virtual neighbors. */
 406 };
 407
 408 /* OSPF config network structure. */
 409 struct ospf_network
 410 {
 411   /* Area ID. */
 412   struct in_addr area_id;
 413   int format;
 414 };
 415
 416 /* OSPF NBMA neighbor structure. */
 417 struct ospf_nbr_nbma
 418 {
 419   /* Neighbor IP address. */
 420   struct in_addr addr;
 421
 422   /* OSPF interface. */
 423   struct ospf_interface *oi;
 424
 425   /* OSPF neighbor structure. */
 426   struct ospf_neighbor *nbr;
 427
 428   /* Neighbor priority. */
 429   u_char priority;
 430
 431   /* Poll timer value. */
 432   u_int32_t v_poll;
 433
 434   /* Poll timer thread. */
 435   struct thread *t_poll;
 436
 437   /* State change. */
 438   u_int32_t state_change;
 439 };
 440
 441 /* Macro. */
 442 #define OSPF_AREA_SAME(X,Y) \
 443         (memcmp ((X->area_id), (Y->area_id), IPV4_MAX_BYTELEN) == 0)
 444
 445 #define IS_OSPF_ABR(O)          ((O)->flags & OSPF_FLAG_ABR)
 446 #define IS_OSPF_ASBR(O)         ((O)->flags & OSPF_FLAG_ASBR)
 447
 448 #define OSPF_IS_AREA_ID_BACKBONE(I) ((I).s_addr == OSPF_AREA_BACKBONE)
 449 #define OSPF_IS_AREA_BACKBONE(A) OSPF_IS_AREA_ID_BACKBONE ((A)->area_id)
 450
 451 #ifdef roundup
 452 #  define ROUNDUP(val, gran)    roundup(val, gran)
 453 #else /* roundup */
 454 #  define ROUNDUP(val, gran)    (((val) - 1 | (gran) - 1) + 1)
 455 #endif /* roundup */
 456
 457 #define LSA_OPTIONS_GET(area) \
 458         (((area)->external_routing == OSPF_AREA_DEFAULT) ? OSPF_OPTION_E : 0)
 459 #define LSA_OPTIONS_NSSA_GET(area) \
 460         (((area)->external_routing == OSPF_AREA_NSSA)  ? OSPF_OPTION_NP : 0)
 461
 462 #define OSPF_TIMER_ON(T,F,V)                                                  \
 463     do {                                                                      \
 464       if (!(T))                                                               \
 465         (T) = thread_add_timer (master, (F), ospf, (V));                      \
 466     } while (0)
 467
 468 #define OSPF_AREA_TIMER_ON(T,F,V)                                             \
 469     do {                                                                      \
 470       if (!(T))                                                               \
 471         (T) = thread_add_timer (master, (F), area, (V));                      \
 472     } while (0)
 473
 474 #define OSPF_POLL_TIMER_ON(T,F,V)                                             \
 475     do {                                                                      \
 476       if (!(T))                                                               \
 477         (T) = thread_add_timer (master, (F), nbr_nbma, (V));                  \
 478     } while (0)
 479
 480 #define OSPF_POLL_TIMER_OFF(X)          OSPF_TIMER_OFF((X))
 481
 482 #define OSPF_TIMER_OFF(X)                                                     \
 483     do {                                                                      \
 484       if (X)                                                                  \
 485         {                                                                     \
 486           thread_cancel (X);                                                  \
 487           (X) = NULL;                                                         \
 488         }                                                                     \
 489     } while (0)
 490
 491 /* Extern variables. */
 492 extern struct ospf_master *om;
 493 extern const struct message ospf_ism_state_msg[];
 494 extern const struct message ospf_nsm_state_msg[];
 495 extern const struct message ospf_lsa_type_msg[];
 496 extern const struct message ospf_link_state_id_type_msg[];
 497 extern const struct message ospf_network_type_msg[];
 498 extern const int ospf_ism_state_msg_max;
 499 extern const int ospf_nsm_state_msg_max;
 500 extern const int ospf_lsa_type_msg_max;
 501 extern const int ospf_link_state_id_type_msg_max;
 502 extern const int ospf_redistributed_proto_max;
 503 extern const int ospf_network_type_msg_max;
 504 extern struct zclient *zclient;
 505 extern struct thread_master *master;
 506 extern int ospf_zlog;
 507
 508 /* Prototypes. */
 509 extern const char *ospf_redist_string(u_int route_type);
 510 extern struct ospf *ospf_lookup (void);
 511 extern struct ospf *ospf_get (void);
 512 extern void ospf_finish (struct ospf *);
 513 extern void ospf_router_id_update (struct ospf *ospf);
 514 extern int ospf_network_set (struct ospf *, struct prefix_ipv4 *,
 515                              struct in_addr);
 516 extern int ospf_network_unset (struct ospf *, struct prefix_ipv4 *,
 517                                struct in_addr);
 518 extern int ospf_area_stub_set (struct ospf *, struct in_addr);
 519 extern int ospf_area_stub_unset (struct ospf *, struct in_addr);
 520 extern int ospf_area_no_summary_set (struct ospf *, struct in_addr);
 521 extern int ospf_area_no_summary_unset (struct ospf *, struct in_addr);
 522 extern int ospf_area_nssa_set (struct ospf *, struct in_addr);
 523 extern int ospf_area_nssa_unset (struct ospf *, struct in_addr);
 524 extern int ospf_area_nssa_translator_role_set (struct ospf *, struct in_addr,
 525                                                int);
 526 extern int ospf_area_export_list_set (struct ospf *, struct ospf_area *,
 527                                       const char *);
 528 extern int ospf_area_export_list_unset (struct ospf *, struct ospf_area *);
 529 extern int ospf_area_import_list_set (struct ospf *, struct ospf_area *,
 530                                       const char *);
 531 extern int ospf_area_import_list_unset (struct ospf *, struct ospf_area *);
 532 extern int ospf_area_shortcut_set (struct ospf *, struct ospf_area *, int);
 533 extern int ospf_area_shortcut_unset (struct ospf *, struct ospf_area *);
 534 extern int ospf_timers_refresh_set (struct ospf *, int);
 535 extern int ospf_timers_refresh_unset (struct ospf *);
 536 extern int ospf_nbr_nbma_set (struct ospf *, struct in_addr);
 537 extern int ospf_nbr_nbma_unset (struct ospf *, struct in_addr);
 538 extern int ospf_nbr_nbma_priority_set (struct ospf *, struct in_addr, u_char);
 539 extern int ospf_nbr_nbma_priority_unset (struct ospf *, struct in_addr);
 540 extern int ospf_nbr_nbma_poll_interval_set (struct ospf *, struct in_addr,
 541                                             unsigned int);
 542 extern int ospf_nbr_nbma_poll_interval_unset (struct ospf *, struct in_addr);
 543 extern void ospf_prefix_list_update (struct prefix_list *);
 544 extern void ospf_init (void);
 545 extern void ospf_if_update (struct ospf *, struct interface *);
 546 extern void ospf_ls_upd_queue_empty (struct ospf_interface *);
 547 extern void ospf_terminate (void);
 548 extern void ospf_nbr_nbma_if_update (struct ospf *, struct ospf_interface *);
 549 extern struct ospf_nbr_nbma *ospf_nbr_nbma_lookup (struct ospf *,
 550                                                    struct in_addr);
 551 extern struct ospf_nbr_nbma *ospf_nbr_nbma_lookup_next (struct ospf *,
 552                                                         struct in_addr *,
 553                                                         int);
 554 extern int ospf_oi_count (struct interface *);
 555
 556 extern struct ospf_area *ospf_area_get (struct ospf *, struct in_addr, int);
 557 extern void ospf_area_check_free (struct ospf *, struct in_addr);
 558 extern struct ospf_area *ospf_area_lookup_by_area_id (struct ospf *,
 559                                                       struct in_addr);
 560 extern void ospf_area_add_if (struct ospf_area *, struct ospf_interface *);
 561 extern void ospf_area_del_if (struct ospf_area *, struct ospf_interface *);
 562
 563 extern void ospf_route_map_init (void);
 564 extern void ospf_snmp_init (void);
 565
 566 extern void ospf_master_init (void);
 567
 568 #endif /* _ZEBRA_OSPFD_H */