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         /* Zebra interface list. */
  97         struct list *iflist;
  98
  99         /* Redistributed external information. */
 100         struct list *external[ZEBRA_ROUTE_MAX + 1];
 101 #define EXTERNAL_INFO(E)      (E->external_info)
 102
 103         /* Various OSPF global configuration. */
 104         u_char options;
 105 #define OSPF_MASTER_SHUTDOWN (1 << 0) /* deferred-shutdown */
 106 };
 107
 108 struct ospf_redist {
 109         u_short instance;
 110
 111         /* Redistribute metric info. */
 112         struct {
 113                 int type;  /* External metric type (E1 or E2).  */
 114                 int value; /* Value for static metric (24-bit).
 115                               -1 means metric value is not set. */
 116         } dmetric;
 117
 118         /* For redistribute route map. */
 119         struct {
 120                 char *name;
 121                 struct route_map *map;
 122         } route_map; /* +1 is for default-information */
 123 #define ROUTEMAP_NAME(R)   (R->route_map.name)
 124 #define ROUTEMAP(R)        (R->route_map.map)
 125 };
 126
 127 /* OSPF instance structure. */
 128 struct ospf {
 129         /* OSPF's running state based on the '[no] router ospf [<instance>]'
 130          * config. */
 131         u_char oi_running;
 132
 133         /* OSPF instance ID  */
 134         u_short instance;
 135
 136         /* OSPF Router ID. */
 137         struct in_addr router_id;       /* Configured automatically. */
 138         struct in_addr router_id_static; /* Configured manually. */
 139
 140         vrf_id_t vrf_id;  /* VRF Id */
 141         char *name;       /* VRF name */
 142
 143         /* ABR/ASBR internal flags. */
 144         u_char flags;
 145 #define OSPF_FLAG_ABR           0x0001
 146 #define OSPF_FLAG_ASBR          0x0002
 147
 148         /* ABR type. */
 149         u_char abr_type;
 150 #define OSPF_ABR_UNKNOWN        0
 151 #define OSPF_ABR_STAND          1
 152 #define OSPF_ABR_IBM            2
 153 #define OSPF_ABR_CISCO          3
 154 #define OSPF_ABR_SHORTCUT       4
 155 #define OSPF_ABR_DEFAULT        OSPF_ABR_CISCO
 156
 157         /* NSSA ABR */
 158         u_char anyNSSA; /* Bump for every NSSA attached. */
 159
 160         /* Configured variables. */
 161         u_char config;
 162 #define OSPF_RFC1583_COMPATIBLE         (1 << 0)
 163 #define OSPF_OPAQUE_CAPABLE             (1 << 2)
 164 #define OSPF_LOG_ADJACENCY_CHANGES      (1 << 3)
 165 #define OSPF_LOG_ADJACENCY_DETAIL       (1 << 4)
 166
 167         /* Opaque-LSA administrative flags. */
 168         u_char opaque;
 169 #define OPAQUE_OPERATION_READY_BIT      (1 << 0)
 170
 171         /* RFC3137 stub router. Configured time to stay stub / max-metric */
 172         unsigned int stub_router_startup_time;  /* seconds */
 173         unsigned int stub_router_shutdown_time; /* seconds */
 174                                                 /* $FRR indent$ */
 175                                                 /* clang-format off */
 176 #define OSPF_STUB_ROUTER_UNCONFIGURED     0
 177         u_char stub_router_admin_set;
 178 #define OSPF_STUB_ROUTER_ADMINISTRATIVE_SET     1
 179 #define OSPF_STUB_ROUTER_ADMINISTRATIVE_UNSET   0
 180
 181 #define OSPF_STUB_MAX_METRIC_SUMMARY_COST       0x00ff0000
 182
 183         /* LSA timers */
 184         unsigned int min_ls_interval; /* minimum delay between LSAs (in msec) */
 185         unsigned int min_ls_arrival;  /* minimum interarrival time between LSAs
 186                                          (in msec) */
 187
 188         /* SPF parameters */
 189         unsigned int spf_delay; /* SPF delay time. */
 190         unsigned int spf_holdtime;     /* SPF hold time. */
 191         unsigned int spf_max_holdtime; /* SPF maximum-holdtime */
 192         unsigned int
 193                 spf_hold_multiplier; /* Adaptive multiplier for hold time */
 194
 195         int default_originate;  /* Default information originate. */
 196                                       /* $FRR indent$ */
 197                                       /* clang-format off */
 198 #define DEFAULT_ORIGINATE_NONE          0
 199 #define DEFAULT_ORIGINATE_ZEBRA         1
 200 #define DEFAULT_ORIGINATE_ALWAYS        2
 201         u_int32_t ref_bandwidth;      /* Reference Bandwidth (Kbps). */
 202         struct route_table *networks; /* OSPF config networks. */
 203         struct list *vlinks;      /* Configured Virtual-Links. */
 204         struct list *areas;        /* OSPF areas. */
 205         struct route_table *nbr_nbma;
 206         struct ospf_area *backbone; /* Pointer to the Backbone Area. */
 207
 208         struct list *oiflist;             /* ospf interfaces */
 209         u_char passive_interface_default; /* passive-interface default */
 210
 211         /* LSDB of AS-external-LSAs. */
 212         struct ospf_lsdb *lsdb;
 213
 214         /* Flags. */
 215         int external_origin; /* AS-external-LSA origin flag. */
 216         int ase_calc;   /* ASE calculation flag. */
 217
 218         struct list *opaque_lsa_self; /* Type-11 Opaque-LSAs */
 219
 220         /* Routing tables. */
 221         struct route_table *old_table; /* Old routing table. */
 222         struct route_table *new_table; /* Current routing table. */
 223
 224         struct route_table *old_rtrs; /* Old ABR/ASBR RT. */
 225         struct route_table *new_rtrs; /* New ABR/ASBR RT. */
 226
 227         struct route_table *new_external_route; /* New External Route. */
 228         struct route_table *old_external_route; /* Old External Route. */
 229
 230         struct route_table *external_lsas; /* Database of external LSAs,
 231                                               prefix is LSA's adv. network*/
 232
 233         /* Time stamps */
 234         struct timeval ts_spf;          /* SPF calculation time stamp. */
 235         struct timeval ts_spf_duration; /* Execution time of last SPF */
 236
 237         struct route_table *maxage_lsa; /* List of MaxAge LSA for deletion. */
 238         int redistribute;               /* Num of redistributed protocols. */
 239
 240         /* Threads. */
 241         struct thread *t_abr_task;        /* ABR task timer. */
 242         struct thread *t_asbr_check;    /* ASBR check timer. */
 243         struct thread *t_distribute_update; /* Distirbute list update timer. */
 244         struct thread *t_spf_calc;        /* SPF calculation timer. */
 245         struct thread *t_ase_calc;        /* ASE calculation timer. */
 246         struct thread *t_external_lsa;      /* AS-external-LSA origin timer. */
 247         struct thread
 248                 *t_opaque_lsa_self; /* Type-11 Opaque-LSAs origin event. */
 249
 250         unsigned int maxage_delay;      /* Delay on Maxage remover timer, sec */
 251         struct thread *t_maxage;        /* MaxAge LSA remover timer. */
 252         struct thread *t_maxage_walker; /* MaxAge LSA checking timer. */
 253
 254         struct thread
 255                 *t_deferred_shutdown; /* deferred/stub-router shutdown timer*/
 256
 257         struct thread *t_write;
 258 #define OSPF_WRITE_INTERFACE_COUNT_DEFAULT    20
 259         int write_oi_count; /* Num of packets sent per thread invocation */
 260         struct thread *t_read;
 261         int fd;
 262         struct stream *ibuf;
 263         struct list *oi_write_q;
 264
 265         /* Distribute lists out of other route sources. */
 266         struct {
 267                 char *name;
 268                 struct access_list *list;
 269         } dlist[ZEBRA_ROUTE_MAX];
 270 #define DISTRIBUTE_NAME(O,T)    (O)->dlist[T].name
 271 #define DISTRIBUTE_LIST(O,T)    (O)->dlist[T].list
 272
 273         /* OSPF redistribute configuration */
 274         struct list *redist[ZEBRA_ROUTE_MAX + 1];
 275
 276         /* Redistribute tag info. */
 277         route_tag_t
 278                 dtag[ZEBRA_ROUTE_MAX + 1]; // Pending: cant configure as of now
 279
 280         int default_metric; /* Default metric for redistribute. */
 281
 282 #define OSPF_LSA_REFRESHER_GRANULARITY 10
 283 #define OSPF_LSA_REFRESHER_SLOTS                                               \
 284         ((OSPF_LS_REFRESH_TIME + OSPF_LS_REFRESH_SHIFT)                        \
 285                  / OSPF_LSA_REFRESHER_GRANULARITY                              \
 286          + 1)
 287         struct {
 288                 u_int16_t index;
 289                 struct list *qs[OSPF_LSA_REFRESHER_SLOTS];
 290         } lsa_refresh_queue;
 291
 292         struct thread *t_lsa_refresher;
 293         time_t lsa_refresher_started;
 294 #define OSPF_LSA_REFRESH_INTERVAL_DEFAULT 10
 295         u_int16_t lsa_refresh_interval;
 296
 297         /* Distance parameter. */
 298         u_char distance_all;
 299         u_char distance_intra;
 300         u_char distance_inter;
 301         u_char distance_external;
 302
 303         /* Statistics for LSA origination. */
 304         u_int32_t lsa_originate_count;
 305
 306         /* Statistics for LSA used for new instantiation. */
 307         u_int32_t rx_lsa_count;
 308
 309         /* Counter of "ip ospf area x.x.x.x" */
 310         u_int32_t if_ospf_cli_count;
 311
 312         struct route_table *distance_table;
 313
 314         QOBJ_FIELDS
 315 };
 316 DECLARE_QOBJ_TYPE(ospf)
 317
 318 /* OSPF area structure. */
 319 struct ospf_area {
 320         /* OSPF instance. */
 321         struct ospf *ospf;
 322
 323         /* Zebra interface list belonging to the area. */
 324         struct list *oiflist;
 325
 326         /* Area ID. */
 327         struct in_addr area_id;
 328
 329         /* Area ID format. */
 330         int area_id_fmt;
 331 #define OSPF_AREA_ID_FMT_DOTTEDQUAD     1
 332 #define OSPF_AREA_ID_FMT_DECIMAL        2
 333
 334         /* Address range. */
 335         struct list *address_range;
 336
 337         /* Configured variables. */
 338         int external_routing;    /* ExternalRoutingCapability. */
 339         int no_summary;          /* Don't inject summaries into stub.*/
 340         int shortcut_configured; /* Area configured as shortcut. */
 341                                  /* $FRR indent$ */
 342                                  /* clang-format off */
 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
 351         u_char NSSATranslatorRole;  /* NSSA configured role */
 352                                     /* $FRR indent$ */
 353                                     /* clang-format off */
 354 #define OSPF_NSSA_ROLE_NEVER     0
 355 #define OSPF_NSSA_ROLE_CANDIDATE 1
 356 #define OSPF_NSSA_ROLE_ALWAYS    2
 357         u_char NSSATranslatorState; /* NSSA operational role */
 358                                     /* $FRR indent$ */
 359                                     /* clang-format off */
 360 #define OSPF_NSSA_TRANSLATE_DISABLED 0
 361 #define OSPF_NSSA_TRANSLATE_ENABLED  1
 362         int NSSATranslatorStabilityInterval;
 363
 364         u_char transit;             /* TransitCapability. */
 365                                     /* $FRR indent$ */
 366                                     /* clang-format off */
 367 #define OSPF_TRANSIT_FALSE      0
 368 #define OSPF_TRANSIT_TRUE       1
 369         struct route_table *ranges; /* Configured Area Ranges. */
 370
 371         /* RFC3137 stub router state flags for area */
 372         u_char stub_router_state;
 373 #define OSPF_AREA_ADMIN_STUB_ROUTED     (1 << 0) /* admin stub-router set */
 374 #define OSPF_AREA_IS_STUB_ROUTED        (1 << 1) /* stub-router active */
 375 #define OSPF_AREA_WAS_START_STUB_ROUTED (1 << 2) /* startup SR was done */
 376         /* Area related LSDBs[Type1-4]. */
 377         struct ospf_lsdb *lsdb;
 378
 379         /* Self-originated LSAs. */
 380         struct ospf_lsa *router_lsa_self;
 381         struct list *opaque_lsa_self; /* Type-10 Opaque-LSAs */
 382
 383         /* Area announce list. */
 384         struct {
 385                 char *name;
 386                 struct access_list *list;
 387         } _export;
 388 #define EXPORT_NAME(A)  (A)->_export.name
 389 #define EXPORT_LIST(A)  (A)->_export.list
 390
 391         /* Area acceptance list. */
 392         struct {
 393                 char *name;
 394                 struct access_list *list;
 395         } import;
 396 #define IMPORT_NAME(A)  (A)->import.name
 397 #define IMPORT_LIST(A)  (A)->import.list
 398
 399         /* Type 3 LSA Area prefix-list. */
 400         struct {
 401                 char *name;
 402                 struct prefix_list *list;
 403         } plist_in;
 404 #define PREFIX_LIST_IN(A)   (A)->plist_in.list
 405 #define PREFIX_NAME_IN(A)   (A)->plist_in.name
 406
 407         struct {
 408                 char *name;
 409                 struct prefix_list *list;
 410         } plist_out;
 411 #define PREFIX_LIST_OUT(A)  (A)->plist_out.list
 412 #define PREFIX_NAME_OUT(A)  (A)->plist_out.name
 413
 414         /* Shortest Path Tree. */
 415         struct vertex *spf;
 416
 417         /* Threads. */
 418         struct thread *t_stub_router;     /* Stub-router timer */
 419         struct thread *t_opaque_lsa_self; /* Type-10 Opaque-LSAs origin. */
 420
 421         /* Statistics field. */
 422         u_int32_t spf_calculation; /* SPF Calculation Count. */
 423
 424         /* Time stamps. */
 425         struct timeval ts_spf; /* SPF calculation time stamp. */
 426
 427         /* Router count. */
 428         u_int32_t abr_count;  /* ABR router in this area. */
 429         u_int32_t asbr_count; /* ASBR router in this area. */
 430
 431         /* Counters. */
 432         u_int32_t act_ints;  /* Active interfaces. */
 433         u_int32_t full_nbrs; /* Fully adjacent neighbors. */
 434         u_int32_t full_vls;  /* Fully adjacent virtual neighbors. */
 435 };
 436
 437 /* OSPF config network structure. */
 438 struct ospf_network {
 439         /* Area ID. */
 440         struct in_addr area_id;
 441         int area_id_fmt;
 442 };
 443
 444 /* OSPF NBMA neighbor structure. */
 445 struct ospf_nbr_nbma {
 446         /* Neighbor IP address. */
 447         struct in_addr addr;
 448
 449         /* OSPF interface. */
 450         struct ospf_interface *oi;
 451
 452         /* OSPF neighbor structure. */
 453         struct ospf_neighbor *nbr;
 454
 455         /* Neighbor priority. */
 456         u_char priority;
 457
 458         /* Poll timer value. */
 459         u_int32_t v_poll;
 460
 461         /* Poll timer thread. */
 462         struct thread *t_poll;
 463
 464         /* State change. */
 465         u_int32_t state_change;
 466 };
 467
 468 /* Macro. */
 469 #define OSPF_AREA_SAME(X, Y)                                                   \
 470         (memcmp((X->area_id), (Y->area_id), IPV4_MAX_BYTELEN) == 0)
 471
 472 #define IS_OSPF_ABR(O)          ((O)->flags & OSPF_FLAG_ABR)
 473 #define IS_OSPF_ASBR(O)         ((O)->flags & OSPF_FLAG_ASBR)
 474
 475 #define OSPF_IS_AREA_ID_BACKBONE(I) ((I).s_addr == OSPF_AREA_BACKBONE)
 476 #define OSPF_IS_AREA_BACKBONE(A) OSPF_IS_AREA_ID_BACKBONE ((A)->area_id)
 477
 478 #ifdef roundup
 479 #  define ROUNDUP(val, gran)    roundup(val, gran)
 480 #else  /* roundup */
 481 #  define ROUNDUP(val, gran)    (((val) - 1 | (gran) - 1) + 1)
 482 #endif /* roundup */
 483
 484 #define LSA_OPTIONS_GET(area)                                                  \
 485         (((area)->external_routing == OSPF_AREA_DEFAULT) ? OSPF_OPTION_E : 0)
 486 #define LSA_OPTIONS_NSSA_GET(area)                                             \
 487         (((area)->external_routing == OSPF_AREA_NSSA) ? OSPF_OPTION_NP : 0)
 488
 489 #define OSPF_TIMER_ON(T,F,V) thread_add_timer (master,(F),ospf,(V),&(T))
 490 #define OSPF_AREA_TIMER_ON(T,F,V) thread_add_timer (master, (F), area, (V), &(T))
 491 #define OSPF_POLL_TIMER_ON(T,F,V) thread_add_timer (master, (F), nbr_nbma, (V), &(T))
 492 #define OSPF_POLL_TIMER_OFF(X) OSPF_TIMER_OFF((X))
 493 #define OSPF_TIMER_OFF(X)                                                      \
 494         do {                                                                   \
 495                 if (X) {                                                       \
 496                         thread_cancel(X);                                      \
 497                         (X) = NULL;                                            \
 498                 }                                                              \
 499         } while (0)
 500
 501 /* Extern variables. */
 502 extern struct ospf_master *om;
 503 extern const int ospf_redistributed_proto_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_instance(u_short);
 511 extern struct ospf *ospf_get(u_short instance, const char *name);
 512 extern struct ospf *ospf_get_instance(u_short);
 513 extern struct ospf *ospf_lookup_by_name(const char *name);
 514 extern struct ospf *ospf_lookup_by_inst_name(u_short instance,
 515                                              const char *name);
 516 extern struct ospf *ospf_lookup_by_vrf_id(vrf_id_t vrf_id);
 517 extern struct ospf *ospf_lookup_by_name(const char *name);
 518 extern struct ospf *ospf_lookup_by_inst_name(u_short instance,
 519                                               const char *name);
 520 extern struct ospf *ospf_lookup_by_vrf_id(vrf_id_t vrf_id);
 521 extern void ospf_finish(struct ospf *);
 522 extern void ospf_router_id_update(struct ospf *ospf);
 523 extern int ospf_network_set(struct ospf *, struct prefix_ipv4 *, struct in_addr,
 524                             int);
 525 extern int ospf_network_unset(struct ospf *, struct prefix_ipv4 *,
 526                               struct in_addr);
 527 extern int ospf_area_display_format_set(struct ospf *, struct ospf_area *area,
 528                                         int df);
 529 extern int ospf_area_stub_set(struct ospf *, struct in_addr);
 530 extern int ospf_area_stub_unset(struct ospf *, struct in_addr);
 531 extern int ospf_area_no_summary_set(struct ospf *, struct in_addr);
 532 extern int ospf_area_no_summary_unset(struct ospf *, struct in_addr);
 533 extern int ospf_area_nssa_set(struct ospf *, struct in_addr);
 534 extern int ospf_area_nssa_unset(struct ospf *, struct in_addr);
 535 extern int ospf_area_nssa_translator_role_set(struct ospf *, struct in_addr,
 536                                               int);
 537 extern int ospf_area_export_list_set(struct ospf *, struct ospf_area *,
 538                                      const char *);
 539 extern int ospf_area_export_list_unset(struct ospf *, struct ospf_area *);
 540 extern int ospf_area_import_list_set(struct ospf *, struct ospf_area *,
 541                                      const char *);
 542 extern int ospf_area_import_list_unset(struct ospf *, struct ospf_area *);
 543 extern int ospf_area_shortcut_set(struct ospf *, struct ospf_area *, int);
 544 extern int ospf_area_shortcut_unset(struct ospf *, struct ospf_area *);
 545 extern int ospf_timers_refresh_set(struct ospf *, int);
 546 extern int ospf_timers_refresh_unset(struct ospf *);
 547 extern int ospf_nbr_nbma_set(struct ospf *, struct in_addr);
 548 extern int ospf_nbr_nbma_unset(struct ospf *, struct in_addr);
 549 extern int ospf_nbr_nbma_priority_set(struct ospf *, struct in_addr, u_char);
 550 extern int ospf_nbr_nbma_priority_unset(struct ospf *, struct in_addr);
 551 extern int ospf_nbr_nbma_poll_interval_set(struct ospf *, struct in_addr,
 552                                            unsigned int);
 553 extern int ospf_nbr_nbma_poll_interval_unset(struct ospf *, struct in_addr);
 554 extern void ospf_prefix_list_update(struct prefix_list *);
 555 extern void ospf_init(void);
 556 extern void ospf_if_update(struct ospf *, struct interface *);
 557 extern void ospf_ls_upd_queue_empty(struct ospf_interface *);
 558 extern void ospf_terminate(void);
 559 extern void ospf_nbr_nbma_if_update(struct ospf *, struct ospf_interface *);
 560 extern struct ospf_nbr_nbma *ospf_nbr_nbma_lookup(struct ospf *,
 561                                                   struct in_addr);
 562 extern struct ospf_nbr_nbma *ospf_nbr_nbma_lookup_next(struct ospf *,
 563                                                        struct in_addr *, int);
 564 extern int ospf_oi_count(struct interface *);
 565
 566 extern struct ospf_area *ospf_area_get(struct ospf *, struct in_addr);
 567 extern void ospf_area_check_free(struct ospf *, struct in_addr);
 568 extern struct ospf_area *ospf_area_lookup_by_area_id(struct ospf *,
 569                                                      struct in_addr);
 570 extern void ospf_area_add_if(struct ospf_area *, struct ospf_interface *);
 571 extern void ospf_area_del_if(struct ospf_area *, struct ospf_interface *);
 572
 573 extern void ospf_interface_area_set(struct ospf *, struct interface *);
 574 extern void ospf_interface_area_unset(struct ospf *, struct interface *);
 575
 576 extern void ospf_route_map_init(void);
 577
 578 extern void ospf_master_init(struct thread_master *master);
 579 extern void ospf_vrf_init(void);
 580 extern void ospf_vrf_terminate(void);
 581 extern void ospf_vrf_link(struct ospf *ospf, struct vrf *vrf);
 582 extern void ospf_vrf_unlink(struct ospf *ospf, struct vrf *vrf);
 583 const char *ospf_vrf_id_to_name(vrf_id_t vrf_id);
 584 #endif /* _ZEBRA_OSPFD_H */