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_MT                   0x01  /* M/T */
  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 #define OSPF_OPTION_DN                   0x80
  70
  71 /* OSPF Database Description flags. */
  72 #define OSPF_DD_FLAG_MS                  0x01
  73 #define OSPF_DD_FLAG_M                   0x02
  74 #define OSPF_DD_FLAG_I                   0x04
  75 #define OSPF_DD_FLAG_ALL                 0x07
  76
  77 #define OSPF_LS_REFRESH_SHIFT       (60 * 15)
  78 #define OSPF_LS_REFRESH_JITTER      60
  79
  80 struct ospf_external
  81 {
  82   u_short instance;
  83   struct route_table *external_info;
  84 };
  85
  86 /* OSPF master for system wide configuration and variables. */
  87 struct ospf_master
  88 {
  89   /* OSPF instance. */
  90   struct list *ospf;
  91
  92   /* OSPF thread master. */
  93   struct thread_master *master;
  94
  95   /* Zebra interface list. */
  96   struct list *iflist;
  97
  98   /* Redistributed external information. */
  99   struct list *external[ZEBRA_ROUTE_MAX + 1];
 100 #define EXTERNAL_INFO(E)      (E->external_info)
 101
 102   /* Various OSPF global configuration. */
 103   u_char options;
 104 #define OSPF_MASTER_SHUTDOWN (1 << 0) /* deferred-shutdown */
 105 };
 106
 107 struct ospf_redist
 108 {
 109   u_short instance;
 110
 111   /* Redistribute metric info. */
 112   struct
 113   {
 114     int type;                   /* External metric type (E1 or E2).  */
 115     int value;                  /* Value for static metric (24-bit).
 116                                    -1 means metric value is not set. */
 117   } dmetric;
 118
 119   /* For redistribute route map. */
 120   struct
 121   {
 122     char *name;
 123     struct route_map *map;
 124   } route_map; /* +1 is for default-information */
 125 #define ROUTEMAP_NAME(R)   (R->route_map.name)
 126 #define ROUTEMAP(R)        (R->route_map.map)
 127 };
 128
 129 /* OSPF instance structure. */
 130 struct ospf
 131 {
 132   /* OSPF's running state based on the '[no] router ospf [<instance>]' config. */
 133   u_char  oi_running;
 134
 135   /* OSPF instance ID  */
 136   u_short instance;
 137
 138   /* OSPF Router ID. */
 139   struct in_addr router_id;             /* Configured automatically. */
 140   struct in_addr router_id_static;      /* Configured manually. */
 141
 142   /* ABR/ASBR internal flags. */
 143   u_char flags;
 144 #define OSPF_FLAG_ABR           0x0001
 145 #define OSPF_FLAG_ASBR          0x0002
 146
 147   /* ABR type. */
 148   u_char abr_type;
 149 #define OSPF_ABR_UNKNOWN        0
 150 #define OSPF_ABR_STAND          1
 151 #define OSPF_ABR_IBM            2
 152 #define OSPF_ABR_CISCO          3
 153 #define OSPF_ABR_SHORTCUT       4
 154 #define OSPF_ABR_DEFAULT        OSPF_ABR_CISCO
 155
 156   /* NSSA ABR */
 157   u_char anyNSSA;               /* Bump for every NSSA attached. */
 158
 159   /* Configured variables. */
 160   u_char config;
 161 #define OSPF_RFC1583_COMPATIBLE         (1 << 0)
 162 #define OSPF_OPAQUE_CAPABLE             (1 << 2)
 163 #define OSPF_LOG_ADJACENCY_CHANGES      (1 << 3)
 164 #define OSPF_LOG_ADJACENCY_DETAIL       (1 << 4)
 165
 166   /* Opaque-LSA administrative flags. */
 167   u_char opaque;
 168 #define OPAQUE_OPERATION_READY_BIT      (1 << 0)
 169
 170   /* RFC3137 stub router. Configured time to stay stub / max-metric */
 171   unsigned int stub_router_startup_time;        /* seconds */
 172   unsigned int stub_router_shutdown_time;       /* seconds */
 173 #define OSPF_STUB_ROUTER_UNCONFIGURED     0
 174   u_char       stub_router_admin_set;
 175 #define OSPF_STUB_ROUTER_ADMINISTRATIVE_SET     1
 176 #define OSPF_STUB_ROUTER_ADMINISTRATIVE_UNSET   0
 177
 178 #define OSPF_STUB_MAX_METRIC_SUMMARY_COST       0x00ff0000
 179
 180   /* LSA timers */
 181   unsigned int min_ls_interval; /* minimum delay between LSAs (in msec) */
 182   unsigned int min_ls_arrival; /* minimum interarrival time between LSAs (in msec) */
 183
 184   /* SPF parameters */
 185   unsigned int spf_delay;               /* SPF delay time. */
 186   unsigned int spf_holdtime;            /* SPF hold time. */
 187   unsigned int spf_max_holdtime;        /* SPF maximum-holdtime */
 188   unsigned int spf_hold_multiplier;     /* Adaptive multiplier for hold time */
 189
 190   int default_originate;                /* Default information originate. */
 191 #define DEFAULT_ORIGINATE_NONE          0
 192 #define DEFAULT_ORIGINATE_ZEBRA         1
 193 #define DEFAULT_ORIGINATE_ALWAYS        2
 194   u_int32_t ref_bandwidth;              /* Reference Bandwidth (Kbps). */
 195   struct route_table *networks;         /* OSPF config networks. */
 196   struct list *vlinks;                  /* Configured Virtual-Links. */
 197   struct list *areas;                   /* OSPF areas. */
 198   struct route_table *nbr_nbma;
 199   struct ospf_area *backbone;           /* Pointer to the Backbone Area. */
 200
 201   struct list *oiflist;                 /* ospf interfaces */
 202   u_char passive_interface_default;     /* passive-interface default */
 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   struct list *opaque_lsa_self;         /* Type-11 Opaque-LSAs */
 212
 213   /* Routing tables. */
 214   struct route_table *old_table;        /* Old routing table. */
 215   struct route_table *new_table;        /* Current routing table. */
 216
 217   struct route_table *old_rtrs;         /* Old ABR/ASBR RT. */
 218   struct route_table *new_rtrs;         /* New ABR/ASBR RT. */
 219
 220   struct route_table *new_external_route;   /* New External Route. */
 221   struct route_table *old_external_route;   /* Old External Route. */
 222
 223   struct route_table *external_lsas;    /* Database of external LSAs,
 224                                            prefix is LSA's adv. network*/
 225
 226   /* Time stamps */
 227   struct timeval ts_spf;                /* SPF calculation time stamp. */
 228   struct timeval ts_spf_duration;       /* Execution time of last SPF */
 229
 230   struct route_table *maxage_lsa;       /* List of MaxAge LSA for deletion. */
 231   int redistribute;                     /* Num of redistributed protocols. */
 232
 233   /* Threads. */
 234   struct thread *t_abr_task;            /* ABR task timer. */
 235   struct thread *t_asbr_check;          /* ASBR check timer. */
 236   struct thread *t_distribute_update;   /* Distirbute list update timer. */
 237   struct thread *t_spf_calc;            /* SPF calculation timer. */
 238   struct thread *t_ase_calc;            /* ASE calculation timer. */
 239   struct thread *t_external_lsa;        /* AS-external-LSA origin timer. */
 240   struct thread *t_opaque_lsa_self;     /* Type-11 Opaque-LSAs origin event. */
 241
 242   unsigned int maxage_delay;            /* Delay on Maxage remover timer, sec */
 243   struct thread *t_maxage;              /* MaxAge LSA remover timer. */
 244   struct thread *t_maxage_walker;       /* MaxAge LSA checking timer. */
 245
 246   struct thread *t_deferred_shutdown;   /* deferred/stub-router shutdown timer*/
 247
 248   struct thread *t_write;
 249 #define OSPF_WRITE_INTERFACE_COUNT_DEFAULT    20
 250   int write_oi_count;         /* Num of packets sent per thread invocation */
 251   struct thread *t_read;
 252   int fd;
 253   unsigned int maxsndbuflen;
 254   struct stream *ibuf;
 255   struct list *oi_write_q;
 256
 257   /* Distribute lists out of other route sources. */
 258   struct
 259   {
 260     char *name;
 261     struct access_list *list;
 262   } dlist[ZEBRA_ROUTE_MAX];
 263 #define DISTRIBUTE_NAME(O,T)    (O)->dlist[T].name
 264 #define DISTRIBUTE_LIST(O,T)    (O)->dlist[T].list
 265
 266   /* OSPF redistribute configuration */
 267   struct list *redist[ZEBRA_ROUTE_MAX + 1];
 268
 269   /* Redistribute tag info. */
 270   u_short dtag[ZEBRA_ROUTE_MAX + 1]; //Pending: cant configure as of now
 271
 272   int default_metric;           /* Default metric for redistribute. */
 273
 274 #define OSPF_LSA_REFRESHER_GRANULARITY 10
 275 #define OSPF_LSA_REFRESHER_SLOTS ((OSPF_LS_REFRESH_TIME + \
 276                                   OSPF_LS_REFRESH_SHIFT)/OSPF_LSA_REFRESHER_GRANULARITY + 1)
 277   struct
 278   {
 279     u_int16_t index;
 280     struct list *qs[OSPF_LSA_REFRESHER_SLOTS];
 281   } lsa_refresh_queue;
 282
 283   struct thread *t_lsa_refresher;
 284   time_t lsa_refresher_started;
 285 #define OSPF_LSA_REFRESH_INTERVAL_DEFAULT 10
 286   u_int16_t lsa_refresh_interval;
 287
 288   /* Distance parameter. */
 289   u_char distance_all;
 290   u_char distance_intra;
 291   u_char distance_inter;
 292   u_char distance_external;
 293
 294   /* Statistics for LSA origination. */
 295   u_int32_t lsa_originate_count;
 296
 297   /* Statistics for LSA used for new instantiation. */
 298   u_int32_t rx_lsa_count;
 299
 300   /* Counter of "ip ospf area x.x.x.x" */
 301   u_int32_t if_ospf_cli_count;
 302
 303   struct route_table *distance_table;
 304 };
 305
 306 /* OSPF area structure. */
 307 struct ospf_area
 308 {
 309   /* OSPF instance. */
 310   struct ospf *ospf;
 311
 312   /* Zebra interface list belonging to the area. */
 313   struct list *oiflist;
 314
 315   /* Area ID. */
 316   struct in_addr area_id;
 317
 318   /* Area ID format. */
 319   char format;
 320 #define OSPF_AREA_ID_FORMAT_ADDRESS         1
 321 #define OSPF_AREA_ID_FORMAT_DECIMAL         2
 322
 323   /* Address range. */
 324   struct list *address_range;
 325
 326   /* Configured variables. */
 327   int external_routing;                 /* ExternalRoutingCapability. */
 328   int no_summary;                       /* Don't inject summaries into stub.*/
 329   int shortcut_configured;              /* Area configured as shortcut. */
 330 #define OSPF_SHORTCUT_DEFAULT   0
 331 #define OSPF_SHORTCUT_ENABLE    1
 332 #define OSPF_SHORTCUT_DISABLE   2
 333   int shortcut_capability;              /* Other ABRs agree on S-bit */
 334   u_int32_t default_cost;               /* StubDefaultCost. */
 335   int auth_type;                        /* Authentication type. */
 336
 337
 338   u_char NSSATranslatorRole;          /* NSSA configured role */
 339 #define OSPF_NSSA_ROLE_NEVER     0
 340 #define OSPF_NSSA_ROLE_CANDIDATE 1
 341 #define OSPF_NSSA_ROLE_ALWAYS    2
 342   u_char NSSATranslatorState;              /* NSSA operational role */
 343 #define OSPF_NSSA_TRANSLATE_DISABLED 0
 344 #define OSPF_NSSA_TRANSLATE_ENABLED  1
 345   int NSSATranslatorStabilityInterval;
 346
 347   u_char transit;                       /* TransitCapability. */
 348 #define OSPF_TRANSIT_FALSE      0
 349 #define OSPF_TRANSIT_TRUE       1
 350   struct route_table *ranges;           /* Configured Area Ranges. */
 351
 352   /* RFC3137 stub router state flags for area */
 353   u_char stub_router_state;
 354 #define OSPF_AREA_ADMIN_STUB_ROUTED     (1 << 0) /* admin stub-router set */
 355 #define OSPF_AREA_IS_STUB_ROUTED        (1 << 1) /* stub-router active */
 356 #define OSPF_AREA_WAS_START_STUB_ROUTED (1 << 2) /* startup SR was done */
 357
 358   /* Area related LSDBs[Type1-4]. */
 359   struct ospf_lsdb *lsdb;
 360
 361   /* Self-originated LSAs. */
 362   struct ospf_lsa *router_lsa_self;
 363   struct list *opaque_lsa_self;         /* Type-10 Opaque-LSAs */
 364
 365   /* Area announce list. */
 366   struct
 367   {
 368     char *name;
 369     struct access_list *list;
 370   } _export;
 371 #define EXPORT_NAME(A)  (A)->_export.name
 372 #define EXPORT_LIST(A)  (A)->_export.list
 373
 374   /* Area acceptance list. */
 375   struct
 376   {
 377     char *name;
 378     struct access_list *list;
 379   } import;
 380 #define IMPORT_NAME(A)  (A)->import.name
 381 #define IMPORT_LIST(A)  (A)->import.list
 382
 383   /* Type 3 LSA Area prefix-list. */
 384   struct
 385   {
 386     char *name;
 387     struct prefix_list *list;
 388   } plist_in;
 389 #define PREFIX_LIST_IN(A)   (A)->plist_in.list
 390 #define PREFIX_NAME_IN(A)   (A)->plist_in.name
 391
 392   struct
 393   {
 394     char *name;
 395     struct prefix_list *list;
 396   } plist_out;
 397 #define PREFIX_LIST_OUT(A)  (A)->plist_out.list
 398 #define PREFIX_NAME_OUT(A)  (A)->plist_out.name
 399
 400   /* Shortest Path Tree. */
 401   struct vertex *spf;
 402
 403   /* Threads. */
 404   struct thread *t_stub_router;    /* Stub-router timer */
 405   struct thread *t_opaque_lsa_self;     /* Type-10 Opaque-LSAs origin. */
 406
 407   /* Statistics field. */
 408   u_int32_t spf_calculation;    /* SPF Calculation Count. */
 409
 410   /* Time stamps. */
 411   struct timeval ts_spf;                /* SPF calculation time stamp. */
 412
 413   /* Router count. */
 414   u_int32_t abr_count;          /* ABR router in this area. */
 415   u_int32_t asbr_count;         /* ASBR router in this area. */
 416
 417   /* Counters. */
 418   u_int32_t act_ints;           /* Active interfaces. */
 419   u_int32_t full_nbrs;          /* Fully adjacent neighbors. */
 420   u_int32_t full_vls;           /* Fully adjacent virtual neighbors. */
 421 };
 422
 423 /* OSPF config network structure. */
 424 struct ospf_network
 425 {
 426   /* Area ID. */
 427   struct in_addr area_id;
 428   int format;
 429 };
 430
 431 /* OSPF NBMA neighbor structure. */
 432 struct ospf_nbr_nbma
 433 {
 434   /* Neighbor IP address. */
 435   struct in_addr addr;
 436
 437   /* OSPF interface. */
 438   struct ospf_interface *oi;
 439
 440   /* OSPF neighbor structure. */
 441   struct ospf_neighbor *nbr;
 442
 443   /* Neighbor priority. */
 444   u_char priority;
 445
 446   /* Poll timer value. */
 447   u_int32_t v_poll;
 448
 449   /* Poll timer thread. */
 450   struct thread *t_poll;
 451
 452   /* State change. */
 453   u_int32_t state_change;
 454 };
 455
 456 /* Macro. */
 457 #define OSPF_AREA_SAME(X,Y) \
 458         (memcmp ((X->area_id), (Y->area_id), IPV4_MAX_BYTELEN) == 0)
 459
 460 #define IS_OSPF_ABR(O)          ((O)->flags & OSPF_FLAG_ABR)
 461 #define IS_OSPF_ASBR(O)         ((O)->flags & OSPF_FLAG_ASBR)
 462
 463 #define OSPF_IS_AREA_ID_BACKBONE(I) ((I).s_addr == OSPF_AREA_BACKBONE)
 464 #define OSPF_IS_AREA_BACKBONE(A) OSPF_IS_AREA_ID_BACKBONE ((A)->area_id)
 465
 466 #ifdef roundup
 467 #  define ROUNDUP(val, gran)    roundup(val, gran)
 468 #else /* roundup */
 469 #  define ROUNDUP(val, gran)    (((val) - 1 | (gran) - 1) + 1)
 470 #endif /* roundup */
 471
 472 #define LSA_OPTIONS_GET(area) \
 473         (((area)->external_routing == OSPF_AREA_DEFAULT) ? OSPF_OPTION_E : 0)
 474 #define LSA_OPTIONS_NSSA_GET(area) \
 475         (((area)->external_routing == OSPF_AREA_NSSA)  ? OSPF_OPTION_NP : 0)
 476
 477 #define OSPF_TIMER_ON(T,F,V)                                                  \
 478     do {                                                                      \
 479       if (!(T))                                                               \
 480         (T) = thread_add_timer (master, (F), ospf, (V));                      \
 481     } while (0)
 482
 483 #define OSPF_AREA_TIMER_ON(T,F,V)                                             \
 484     do {                                                                      \
 485       if (!(T))                                                               \
 486         (T) = thread_add_timer (master, (F), area, (V));                      \
 487     } while (0)
 488
 489 #define OSPF_POLL_TIMER_ON(T,F,V)                                             \
 490     do {                                                                      \
 491       if (!(T))                                                               \
 492         (T) = thread_add_timer (master, (F), nbr_nbma, (V));                  \
 493     } while (0)
 494
 495 #define OSPF_POLL_TIMER_OFF(X)          OSPF_TIMER_OFF((X))
 496
 497 #define OSPF_TIMER_OFF(X)                                                     \
 498     do {                                                                      \
 499       if (X)                                                                  \
 500         {                                                                     \
 501           thread_cancel (X);                                                  \
 502           (X) = NULL;                                                         \
 503         }                                                                     \
 504     } while (0)
 505
 506 /* Extern variables. */
 507 extern struct ospf_master *om;
 508 extern const struct message ospf_ism_state_msg[];
 509 extern const struct message ospf_nsm_state_msg[];
 510 extern const struct message ospf_lsa_type_msg[];
 511 extern const struct message ospf_link_state_id_type_msg[];
 512 extern const struct message ospf_network_type_msg[];
 513 extern const int ospf_ism_state_msg_max;
 514 extern const int ospf_nsm_state_msg_max;
 515 extern const int ospf_lsa_type_msg_max;
 516 extern const int ospf_link_state_id_type_msg_max;
 517 extern const int ospf_redistributed_proto_max;
 518 extern const int ospf_network_type_msg_max;
 519 extern struct zclient *zclient;
 520 extern struct thread_master *master;
 521 extern int ospf_zlog;
 522
 523 /* Prototypes. */
 524 extern const char *ospf_redist_string(u_int route_type);
 525 extern struct ospf *ospf_lookup (void);
 526 extern struct ospf *ospf_lookup_instance (u_short);
 527 extern struct ospf *ospf_get (void);
 528 extern struct ospf *ospf_get_instance (u_short);
 529 extern void ospf_finish (struct ospf *);
 530 extern void ospf_router_id_update (struct ospf *ospf);
 531 extern int ospf_network_set (struct ospf *, struct prefix_ipv4 *,
 532                              struct in_addr);
 533 extern int ospf_network_unset (struct ospf *, struct prefix_ipv4 *,
 534                                struct in_addr);
 535 extern int ospf_area_stub_set (struct ospf *, struct in_addr);
 536 extern int ospf_area_stub_unset (struct ospf *, struct in_addr);
 537 extern int ospf_area_no_summary_set (struct ospf *, struct in_addr);
 538 extern int ospf_area_no_summary_unset (struct ospf *, struct in_addr);
 539 extern int ospf_area_nssa_set (struct ospf *, struct in_addr);
 540 extern int ospf_area_nssa_unset (struct ospf *, struct in_addr);
 541 extern int ospf_area_nssa_translator_role_set (struct ospf *, struct in_addr,
 542                                                int);
 543 extern int ospf_area_export_list_set (struct ospf *, struct ospf_area *,
 544                                       const char *);
 545 extern int ospf_area_export_list_unset (struct ospf *, struct ospf_area *);
 546 extern int ospf_area_import_list_set (struct ospf *, struct ospf_area *,
 547                                       const char *);
 548 extern int ospf_area_import_list_unset (struct ospf *, struct ospf_area *);
 549 extern int ospf_area_shortcut_set (struct ospf *, struct ospf_area *, int);
 550 extern int ospf_area_shortcut_unset (struct ospf *, struct ospf_area *);
 551 extern int ospf_timers_refresh_set (struct ospf *, int);
 552 extern int ospf_timers_refresh_unset (struct ospf *);
 553 extern int ospf_nbr_nbma_set (struct ospf *, struct in_addr);
 554 extern int ospf_nbr_nbma_unset (struct ospf *, struct in_addr);
 555 extern int ospf_nbr_nbma_priority_set (struct ospf *, struct in_addr, u_char);
 556 extern int ospf_nbr_nbma_priority_unset (struct ospf *, struct in_addr);
 557 extern int ospf_nbr_nbma_poll_interval_set (struct ospf *, struct in_addr,
 558                                             unsigned int);
 559 extern int ospf_nbr_nbma_poll_interval_unset (struct ospf *, struct in_addr);
 560 extern void ospf_prefix_list_update (struct prefix_list *);
 561 extern void ospf_init (void);
 562 extern void ospf_if_update (struct ospf *, struct interface *);
 563 extern void ospf_ls_upd_queue_empty (struct ospf_interface *);
 564 extern void ospf_terminate (void);
 565 extern void ospf_nbr_nbma_if_update (struct ospf *, struct ospf_interface *);
 566 extern struct ospf_nbr_nbma *ospf_nbr_nbma_lookup (struct ospf *,
 567                                                    struct in_addr);
 568 extern struct ospf_nbr_nbma *ospf_nbr_nbma_lookup_next (struct ospf *,
 569                                                         struct in_addr *,
 570                                                         int);
 571 extern int ospf_oi_count (struct interface *);
 572
 573 extern struct ospf_area *ospf_area_get (struct ospf *, struct in_addr, int);
 574 extern void ospf_area_check_free (struct ospf *, struct in_addr);
 575 extern struct ospf_area *ospf_area_lookup_by_area_id (struct ospf *,
 576                                                       struct in_addr);
 577 extern void ospf_area_add_if (struct ospf_area *, struct ospf_interface *);
 578 extern void ospf_area_del_if (struct ospf_area *, struct ospf_interface *);
 579
 580 extern void ospf_route_map_init (void);
 581 extern void ospf_snmp_init (void);
 582
 583 extern void ospf_master_init (void);
 584
 585 extern int ospf_interface_set (struct interface *ifp, struct in_addr area_id);
 586 extern int ospf_interface_unset (struct interface *ifp);
 587 #endif /* _ZEBRA_OSPFD_H */