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 along
  18  * with this program; see the file COPYING; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 #ifndef _ZEBRA_OSPFD_H
  23 #define _ZEBRA_OSPFD_H
  24
  25 #include <zebra.h>
  26 #include "qobj.h"
  27 #include "libospf.h"
  28
  29 #include "filter.h"
  30 #include "log.h"
  31 #include "vrf.h"
  32
  33 #include "ospf_memory.h"
  34 #include "ospf_dump_api.h"
  35
  36 #define OSPF_VERSION            2
  37
  38 /* VTY port number. */
  39 #define OSPF_VTY_PORT          2604
  40
  41 /* IP TTL for OSPF protocol. */
  42 #define OSPF_IP_TTL             1
  43 #define OSPF_VL_IP_TTL          100
  44
  45 /* Default configuration file name for ospfd. */
  46 #define OSPF_DEFAULT_CONFIG   "ospfd.conf"
  47
  48 #define OSPF_NSSA_TRANS_STABLE_DEFAULT          40
  49
  50 #define OSPF_ALLSPFROUTERS              0xe0000005      /* 224.0.0.5 */
  51 #define OSPF_ALLDROUTERS                0xe0000006      /* 224.0.0.6 */
  52
  53 /* OSPF Authentication Type. */
  54 #define OSPF_AUTH_NULL                      0
  55 #define OSPF_AUTH_SIMPLE                    1
  56 #define OSPF_AUTH_CRYPTOGRAPHIC             2
  57 /* For Interface authentication setting default */
  58 #define OSPF_AUTH_NOTSET                   -1
  59 /* For the consumption and sanity of the command handler */
  60 /* DO NIOT REMOVE!!! Need to detect whether a value has
  61    been given or not in VLink command handlers */
  62 #define OSPF_AUTH_CMD_NOTSEEN              -2
  63
  64 /* OSPF options. */
  65 #define OSPF_OPTION_MT                   0x01  /* M/T */
  66 #define OSPF_OPTION_E                    0x02
  67 #define OSPF_OPTION_MC                   0x04
  68 #define OSPF_OPTION_NP                   0x08
  69 #define OSPF_OPTION_EA                   0x10
  70 #define OSPF_OPTION_DC                   0x20
  71 #define OSPF_OPTION_O                    0x40
  72 #define OSPF_OPTION_DN                   0x80
  73
  74 /* OSPF Database Description flags. */
  75 #define OSPF_DD_FLAG_MS                  0x01
  76 #define OSPF_DD_FLAG_M                   0x02
  77 #define OSPF_DD_FLAG_I                   0x04
  78 #define OSPF_DD_FLAG_ALL                 0x07
  79
  80 #define OSPF_LS_REFRESH_SHIFT       (60 * 15)
  81 #define OSPF_LS_REFRESH_JITTER      60
  82
  83 struct ospf_external {
  84         u_short instance;
  85         struct route_table *external_info;
  86 };
  87
  88 /* OSPF master for system wide configuration and variables. */
  89 struct ospf_master {
  90         /* OSPF instance. */
  91         struct list *ospf;
  92
  93         /* OSPF thread master. */
  94         struct thread_master *master;
  95
  96
  97         /* Redistributed external information. */
  98         struct list *external[ZEBRA_ROUTE_MAX + 1];
  99 #define EXTERNAL_INFO(E)      (E->external_info)
 100
 101         /* Various OSPF global configuration. */
 102         u_char options;
 103 #define OSPF_MASTER_SHUTDOWN (1 << 0) /* deferred-shutdown */
 104 };
 105
 106 struct ospf_redist {
 107         u_short instance;
 108
 109         /* Redistribute metric info. */
 110         struct {
 111                 int type;  /* External metric type (E1 or E2).  */
 112                 int value; /* Value for static metric (24-bit).
 113                               -1 means metric value is not set. */
 114         } dmetric;
 115
 116         /* For redistribute route map. */
 117         struct {
 118                 char *name;
 119                 struct route_map *map;
 120         } route_map; /* +1 is for default-information */
 121 #define ROUTEMAP_NAME(R)   (R->route_map.name)
 122 #define ROUTEMAP(R)        (R->route_map.map)
 123 };
 124
 125 /* OSPF instance structure. */
 126 struct ospf {
 127         /* OSPF's running state based on the '[no] router ospf [<instance>]'
 128          * config. */
 129         u_char oi_running;
 130
 131         /* OSPF instance ID  */
 132         u_short instance;
 133
 134         /* OSPF Router ID. */
 135         struct in_addr router_id;       /* Configured automatically. */
 136         struct in_addr router_id_static; /* Configured manually. */
 137         struct in_addr router_id_zebra;
 138
 139         vrf_id_t vrf_id;  /* VRF Id */
 140         char *name;       /* VRF name */
 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                                                 /* $FRR indent$ */
 174                                                 /* clang-format off */
 175 #define OSPF_STUB_ROUTER_UNCONFIGURED     0
 176         u_char stub_router_admin_set;
 177 #define OSPF_STUB_ROUTER_ADMINISTRATIVE_SET     1
 178 #define OSPF_STUB_ROUTER_ADMINISTRATIVE_UNSET   0
 179
 180 #define OSPF_STUB_MAX_METRIC_SUMMARY_COST       0x00ff0000
 181
 182         /* LSA timers */
 183         unsigned int min_ls_interval; /* minimum delay between LSAs (in msec) */
 184         unsigned int min_ls_arrival;  /* minimum interarrival time between LSAs
 185                                          (in msec) */
 186
 187         /* SPF parameters */
 188         unsigned int spf_delay; /* SPF delay time. */
 189         unsigned int spf_holdtime;     /* SPF hold time. */
 190         unsigned int spf_max_holdtime; /* SPF maximum-holdtime */
 191         unsigned int
 192                 spf_hold_multiplier; /* Adaptive multiplier for hold time */
 193
 194         int default_originate;  /* Default information originate. */
 195                                       /* $FRR indent$ */
 196                                       /* clang-format off */
 197 #define DEFAULT_ORIGINATE_NONE          0
 198 #define DEFAULT_ORIGINATE_ZEBRA         1
 199 #define DEFAULT_ORIGINATE_ALWAYS        2
 200         u_int32_t ref_bandwidth;      /* Reference Bandwidth (Kbps). */
 201         struct route_table *networks; /* OSPF config networks. */
 202         struct list *vlinks;      /* Configured Virtual-Links. */
 203         struct list *areas;        /* OSPF areas. */
 204         struct route_table *nbr_nbma;
 205         struct ospf_area *backbone; /* Pointer to the Backbone Area. */
 206
 207         struct list *oiflist;             /* ospf interfaces */
 208         u_char passive_interface_default; /* passive-interface default */
 209
 210         /* LSDB of AS-external-LSAs. */
 211         struct ospf_lsdb *lsdb;
 212
 213         /* Flags. */
 214         int external_origin; /* AS-external-LSA origin flag. */
 215         int ase_calc;   /* ASE calculation flag. */
 216
 217         struct list *opaque_lsa_self; /* Type-11 Opaque-LSAs */
 218
 219         /* Routing tables. */
 220         struct route_table *old_table; /* Old routing table. */
 221         struct route_table *new_table; /* Current routing table. */
 222
 223         struct route_table *old_rtrs; /* Old ABR/ASBR RT. */
 224         struct route_table *new_rtrs; /* New ABR/ASBR RT. */
 225
 226         struct route_table *new_external_route; /* New External Route. */
 227         struct route_table *old_external_route; /* Old External Route. */
 228
 229         struct route_table *external_lsas; /* Database of external LSAs,
 230                                               prefix is LSA's adv. network*/
 231
 232         /* Time stamps */
 233         struct timeval ts_spf;          /* SPF calculation time stamp. */
 234         struct timeval ts_spf_duration; /* Execution time of last SPF */
 235
 236         struct route_table *maxage_lsa; /* List of MaxAge LSA for deletion. */
 237         int redistribute;               /* Num of redistributed protocols. */
 238
 239         /* Threads. */
 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         struct thread
 247                 *t_opaque_lsa_self; /* Type-11 Opaque-LSAs origin event. */
 248
 249         unsigned int maxage_delay;      /* Delay on Maxage remover timer, sec */
 250         struct thread *t_maxage;        /* MaxAge LSA remover timer. */
 251         struct thread *t_maxage_walker; /* MaxAge LSA checking timer. */
 252
 253         struct thread
 254                 *t_deferred_shutdown; /* deferred/stub-router shutdown timer*/
 255
 256         struct thread *t_write;
 257 #define OSPF_WRITE_INTERFACE_COUNT_DEFAULT    20
 258         int write_oi_count; /* Num of packets sent per thread invocation */
 259         struct thread *t_read;
 260         int fd;
 261         struct stream *ibuf;
 262         struct list *oi_write_q;
 263
 264         /* Distribute lists out of other route sources. */
 265         struct {
 266                 char *name;
 267                 struct access_list *list;
 268         } dlist[ZEBRA_ROUTE_MAX];
 269 #define DISTRIBUTE_NAME(O,T)    (O)->dlist[T].name
 270 #define DISTRIBUTE_LIST(O,T)    (O)->dlist[T].list
 271
 272         /* OSPF redistribute configuration */
 273         struct list *redist[ZEBRA_ROUTE_MAX + 1];
 274
 275         /* Redistribute tag info. */
 276         route_tag_t
 277                 dtag[ZEBRA_ROUTE_MAX + 1]; // Pending: cant configure as of now
 278
 279         int default_metric; /* Default metric for redistribute. */
 280
 281 #define OSPF_LSA_REFRESHER_GRANULARITY 10
 282 #define OSPF_LSA_REFRESHER_SLOTS                                               \
 283         ((OSPF_LS_REFRESH_TIME + OSPF_LS_REFRESH_SHIFT)                        \
 284                  / OSPF_LSA_REFRESHER_GRANULARITY                              \
 285          + 1)
 286         struct {
 287                 u_int16_t index;
 288                 struct list *qs[OSPF_LSA_REFRESHER_SLOTS];
 289         } lsa_refresh_queue;
 290
 291         struct thread *t_lsa_refresher;
 292         time_t lsa_refresher_started;
 293 #define OSPF_LSA_REFRESH_INTERVAL_DEFAULT 10
 294         u_int16_t lsa_refresh_interval;
 295
 296         /* Distance parameter. */
 297         u_char distance_all;
 298         u_char distance_intra;
 299         u_char distance_inter;
 300         u_char distance_external;
 301
 302         /* Statistics for LSA origination. */
 303         u_int32_t lsa_originate_count;
 304
 305         /* Statistics for LSA used for new instantiation. */
 306         u_int32_t rx_lsa_count;
 307
 308         /* Counter of "ip ospf area x.x.x.x" */
 309         u_int32_t if_ospf_cli_count;
 310
 311         struct route_table *distance_table;
 312
 313         /* Used during ospf instance going down send LSDB
 314          * update to neighbors immediatly */
 315         uint8_t inst_shutdown;
 316
 317         QOBJ_FIELDS
 318 };
 319 DECLARE_QOBJ_TYPE(ospf)
 320
 321 /* OSPF area structure. */
 322 struct ospf_area {
 323         /* OSPF instance. */
 324         struct ospf *ospf;
 325
 326         /* Zebra interface list belonging to the area. */
 327         struct list *oiflist;
 328
 329         /* Area ID. */
 330         struct in_addr area_id;
 331
 332         /* Area ID format. */
 333         int area_id_fmt;
 334 #define OSPF_AREA_ID_FMT_DOTTEDQUAD     1
 335 #define OSPF_AREA_ID_FMT_DECIMAL        2
 336
 337         /* Address range. */
 338         struct list *address_range;
 339
 340         /* Configured variables. */
 341         int external_routing;    /* ExternalRoutingCapability. */
 342         int no_summary;          /* Don't inject summaries into stub.*/
 343         int shortcut_configured; /* Area configured as shortcut. */
 344                                  /* $FRR indent$ */
 345                                  /* clang-format off */
 346 #define OSPF_SHORTCUT_DEFAULT   0
 347 #define OSPF_SHORTCUT_ENABLE    1
 348 #define OSPF_SHORTCUT_DISABLE   2
 349         int shortcut_capability; /* Other ABRs agree on S-bit */
 350         u_int32_t default_cost;  /* StubDefaultCost. */
 351         int auth_type;           /* Authentication type. */
 352
 353
 354         u_char NSSATranslatorRole;  /* NSSA configured role */
 355                                     /* $FRR indent$ */
 356                                     /* clang-format off */
 357 #define OSPF_NSSA_ROLE_NEVER     0
 358 #define OSPF_NSSA_ROLE_CANDIDATE 1
 359 #define OSPF_NSSA_ROLE_ALWAYS    2
 360         u_char NSSATranslatorState; /* NSSA operational role */
 361                                     /* $FRR indent$ */
 362                                     /* clang-format off */
 363 #define OSPF_NSSA_TRANSLATE_DISABLED 0
 364 #define OSPF_NSSA_TRANSLATE_ENABLED  1
 365         int NSSATranslatorStabilityInterval;
 366
 367         u_char transit;             /* TransitCapability. */
 368                                     /* $FRR indent$ */
 369                                     /* clang-format off */
 370 #define OSPF_TRANSIT_FALSE      0
 371 #define OSPF_TRANSIT_TRUE       1
 372         struct route_table *ranges; /* Configured Area Ranges. */
 373
 374         /* RFC3137 stub router state flags for area */
 375         u_char stub_router_state;
 376 #define OSPF_AREA_ADMIN_STUB_ROUTED     (1 << 0) /* admin stub-router set */
 377 #define OSPF_AREA_IS_STUB_ROUTED        (1 << 1) /* stub-router active */
 378 #define OSPF_AREA_WAS_START_STUB_ROUTED (1 << 2) /* startup SR was done */
 379         /* Area related LSDBs[Type1-4]. */
 380         struct ospf_lsdb *lsdb;
 381
 382         /* Self-originated LSAs. */
 383         struct ospf_lsa *router_lsa_self;
 384         struct list *opaque_lsa_self; /* Type-10 Opaque-LSAs */
 385
 386         /* Area announce list. */
 387         struct {
 388                 char *name;
 389                 struct access_list *list;
 390         } _export;
 391 #define EXPORT_NAME(A)  (A)->_export.name
 392 #define EXPORT_LIST(A)  (A)->_export.list
 393
 394         /* Area acceptance list. */
 395         struct {
 396                 char *name;
 397                 struct access_list *list;
 398         } import;
 399 #define IMPORT_NAME(A)  (A)->import.name
 400 #define IMPORT_LIST(A)  (A)->import.list
 401
 402         /* Type 3 LSA Area prefix-list. */
 403         struct {
 404                 char *name;
 405                 struct prefix_list *list;
 406         } plist_in;
 407 #define PREFIX_LIST_IN(A)   (A)->plist_in.list
 408 #define PREFIX_NAME_IN(A)   (A)->plist_in.name
 409
 410         struct {
 411                 char *name;
 412                 struct prefix_list *list;
 413         } plist_out;
 414 #define PREFIX_LIST_OUT(A)  (A)->plist_out.list
 415 #define PREFIX_NAME_OUT(A)  (A)->plist_out.name
 416
 417         /* Shortest Path Tree. */
 418         struct vertex *spf;
 419
 420         /* Threads. */
 421         struct thread *t_stub_router;     /* Stub-router timer */
 422         struct thread *t_opaque_lsa_self; /* Type-10 Opaque-LSAs origin. */
 423
 424         /* Statistics field. */
 425         u_int32_t spf_calculation; /* SPF Calculation Count. */
 426
 427         /* Time stamps. */
 428         struct timeval ts_spf; /* SPF calculation time stamp. */
 429
 430         /* Router count. */
 431         u_int32_t abr_count;  /* ABR router in this area. */
 432         u_int32_t asbr_count; /* ASBR router in this area. */
 433
 434         /* Counters. */
 435         u_int32_t act_ints;  /* Active interfaces. */
 436         u_int32_t full_nbrs; /* Fully adjacent neighbors. */
 437         u_int32_t full_vls;  /* Fully adjacent virtual neighbors. */
 438 };
 439
 440 /* OSPF config network structure. */
 441 struct ospf_network {
 442         /* Area ID. */
 443         struct in_addr area_id;
 444         int area_id_fmt;
 445 };
 446
 447 /* OSPF NBMA neighbor structure. */
 448 struct ospf_nbr_nbma {
 449         /* Neighbor IP address. */
 450         struct in_addr addr;
 451
 452         /* OSPF interface. */
 453         struct ospf_interface *oi;
 454
 455         /* OSPF neighbor structure. */
 456         struct ospf_neighbor *nbr;
 457
 458         /* Neighbor priority. */
 459         u_char priority;
 460
 461         /* Poll timer value. */
 462         u_int32_t v_poll;
 463
 464         /* Poll timer thread. */
 465         struct thread *t_poll;
 466
 467         /* State change. */
 468         u_int32_t state_change;
 469 };
 470
 471 /* Macro. */
 472 #define OSPF_AREA_SAME(X, Y)                                                   \
 473         (memcmp((X->area_id), (Y->area_id), IPV4_MAX_BYTELEN) == 0)
 474
 475 #define IS_OSPF_ABR(O)          ((O)->flags & OSPF_FLAG_ABR)
 476 #define IS_OSPF_ASBR(O)         ((O)->flags & OSPF_FLAG_ASBR)
 477
 478 #define OSPF_IS_AREA_ID_BACKBONE(I) ((I).s_addr == OSPF_AREA_BACKBONE)
 479 #define OSPF_IS_AREA_BACKBONE(A) OSPF_IS_AREA_ID_BACKBONE ((A)->area_id)
 480
 481 #ifdef roundup
 482 #  define ROUNDUP(val, gran)    roundup(val, gran)
 483 #else  /* roundup */
 484 #  define ROUNDUP(val, gran)    (((val) - 1 | (gran) - 1) + 1)
 485 #endif /* roundup */
 486
 487 #define LSA_OPTIONS_GET(area)                                                  \
 488         (((area)->external_routing == OSPF_AREA_DEFAULT) ? OSPF_OPTION_E : 0)
 489 #define LSA_OPTIONS_NSSA_GET(area)                                             \
 490         (((area)->external_routing == OSPF_AREA_NSSA) ? OSPF_OPTION_NP : 0)
 491
 492 #define OSPF_TIMER_ON(T,F,V) thread_add_timer (master,(F),ospf,(V),&(T))
 493 #define OSPF_AREA_TIMER_ON(T,F,V) thread_add_timer (master, (F), area, (V), &(T))
 494 #define OSPF_POLL_TIMER_ON(T,F,V) thread_add_timer (master, (F), nbr_nbma, (V), &(T))
 495 #define OSPF_POLL_TIMER_OFF(X) OSPF_TIMER_OFF((X))
 496 #define OSPF_TIMER_OFF(X)                                                      \
 497         do {                                                                   \
 498                 if (X) {                                                       \
 499                         thread_cancel(X);                                      \
 500                         (X) = NULL;                                            \
 501                 }                                                              \
 502         } while (0)
 503
 504 /* Extern variables. */
 505 extern struct ospf_master *om;
 506 extern const int ospf_redistributed_proto_max;
 507 extern struct zclient *zclient;
 508 extern struct thread_master *master;
 509 extern int ospf_zlog;
 510 extern struct zebra_privs_t ospfd_privs;
 511
 512 /* Prototypes. */
 513 extern const char *ospf_redist_string(u_int route_type);
 514 extern struct ospf *ospf_lookup_instance(u_short);
 515 extern struct ospf *ospf_get(u_short instance, const char *name);
 516 extern struct ospf *ospf_get_instance(u_short);
 517 extern struct ospf *ospf_lookup_by_inst_name(u_short instance,
 518                                              const char *name);
 519 extern struct ospf *ospf_lookup_by_vrf_id(vrf_id_t vrf_id);
 520 extern void ospf_finish(struct ospf *);
 521 extern void ospf_router_id_update(struct ospf *ospf);
 522 extern int ospf_network_set(struct ospf *, struct prefix_ipv4 *, struct in_addr,
 523                             int);
 524 extern int ospf_network_unset(struct ospf *, struct prefix_ipv4 *,
 525                               struct in_addr);
 526 extern int ospf_area_display_format_set(struct ospf *, struct ospf_area *area,
 527                                         int df);
 528 extern int ospf_area_stub_set(struct ospf *, struct in_addr);
 529 extern int ospf_area_stub_unset(struct ospf *, struct in_addr);
 530 extern int ospf_area_no_summary_set(struct ospf *, struct in_addr);
 531 extern int ospf_area_no_summary_unset(struct ospf *, struct in_addr);
 532 extern int ospf_area_nssa_set(struct ospf *, struct in_addr);
 533 extern int ospf_area_nssa_unset(struct ospf *, struct in_addr, int);
 534 extern int ospf_area_nssa_translator_role_set(struct ospf *, struct in_addr,
 535                                               int);
 536 extern int ospf_area_export_list_set(struct ospf *, struct ospf_area *,
 537                                      const char *);
 538 extern int ospf_area_export_list_unset(struct ospf *, struct ospf_area *);
 539 extern int ospf_area_import_list_set(struct ospf *, struct ospf_area *,
 540                                      const char *);
 541 extern int ospf_area_import_list_unset(struct ospf *, struct ospf_area *);
 542 extern int ospf_area_shortcut_set(struct ospf *, struct ospf_area *, int);
 543 extern int ospf_area_shortcut_unset(struct ospf *, struct ospf_area *);
 544 extern int ospf_timers_refresh_set(struct ospf *, int);
 545 extern int ospf_timers_refresh_unset(struct ospf *);
 546 extern int ospf_nbr_nbma_set(struct ospf *, struct in_addr);
 547 extern int ospf_nbr_nbma_unset(struct ospf *, struct in_addr);
 548 extern int ospf_nbr_nbma_priority_set(struct ospf *, struct in_addr, u_char);
 549 extern int ospf_nbr_nbma_priority_unset(struct ospf *, struct in_addr);
 550 extern int ospf_nbr_nbma_poll_interval_set(struct ospf *, struct in_addr,
 551                                            unsigned int);
 552 extern int ospf_nbr_nbma_poll_interval_unset(struct ospf *, struct in_addr);
 553 extern void ospf_prefix_list_update(struct prefix_list *);
 554 extern void ospf_init(void);
 555 extern void ospf_if_update(struct ospf *, struct interface *);
 556 extern void ospf_ls_upd_queue_empty(struct ospf_interface *);
 557 extern void ospf_terminate(void);
 558 extern void ospf_nbr_nbma_if_update(struct ospf *, struct ospf_interface *);
 559 extern struct ospf_nbr_nbma *ospf_nbr_nbma_lookup(struct ospf *,
 560                                                   struct in_addr);
 561 extern struct ospf_nbr_nbma *ospf_nbr_nbma_lookup_next(struct ospf *,
 562                                                        struct in_addr *, int);
 563 extern int ospf_oi_count(struct interface *);
 564
 565 extern struct ospf_area *ospf_area_get(struct ospf *, struct in_addr);
 566 extern void ospf_area_check_free(struct ospf *, struct in_addr);
 567 extern struct ospf_area *ospf_area_lookup_by_area_id(struct ospf *,
 568                                                      struct in_addr);
 569 extern void ospf_area_add_if(struct ospf_area *, struct ospf_interface *);
 570 extern void ospf_area_del_if(struct ospf_area *, struct ospf_interface *);
 571
 572 extern void ospf_interface_area_set(struct ospf *, struct interface *);
 573 extern void ospf_interface_area_unset(struct ospf *, struct interface *);
 574
 575 extern void ospf_route_map_init(void);
 576
 577 extern void ospf_master_init(struct thread_master *master);
 578 extern void ospf_vrf_init(void);
 579 extern void ospf_vrf_terminate(void);
 580 extern void ospf_vrf_link(struct ospf *ospf, struct vrf *vrf);
 581 extern void ospf_vrf_unlink(struct ospf *ospf, struct vrf *vrf);
 582 const char *ospf_vrf_id_to_name(vrf_id_t vrf_id);
 583 int ospf_area_nssa_no_summary_set(struct ospf *, struct in_addr);
 584
 585 #endif /* _ZEBRA_OSPFD_H */