ospfd/ospfd.h

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * OSPFd main header.
   4  * Copyright (C) 1998, 99, 2000 Kunihiro Ishiguro, Toshiaki Takada
   5  */
   6
   7 #ifndef _ZEBRA_OSPFD_H
   8 #define _ZEBRA_OSPFD_H
   9
  10 #include <zebra.h>
  11 #include "typesafe.h"
  12 #include "qobj.h"
  13 #include "libospf.h"
  14 #include "ldp_sync.h"
  15
  16 #include "filter.h"
  17 #include "log.h"
  18 #include "vrf.h"
  19
  20 #include "ospf_memory.h"
  21 #include "ospf_dump_api.h"
  22
  23 #define OSPF_VERSION            2
  24
  25 /* VTY port number. */
  26 #define OSPF_VTY_PORT          2604
  27
  28 /* IP TTL for OSPF protocol. */
  29 #define OSPF_IP_TTL             1
  30 #define OSPF_VL_IP_TTL          100
  31
  32 /* Default configuration file name for ospfd. */
  33 #define OSPF_DEFAULT_CONFIG   "ospfd.conf"
  34
  35 #define OSPF_NSSA_TRANS_STABLE_DEFAULT          40
  36
  37 #define OSPF_ALLSPFROUTERS              0xe0000005      /* 224.0.0.5 */
  38 #define OSPF_ALLDROUTERS                0xe0000006      /* 224.0.0.6 */
  39
  40 /* OSPF Authentication Type. */
  41 #define OSPF_AUTH_NULL                      0
  42 #define OSPF_AUTH_SIMPLE                    1
  43 #define OSPF_AUTH_CRYPTOGRAPHIC             2
  44 /* For Interface authentication setting default */
  45 #define OSPF_AUTH_NOTSET                   -1
  46 /* For the consumption and sanity of the command handler */
  47 /* DO NIOT REMOVE!!! Need to detect whether a value has
  48    been given or not in VLink command handlers */
  49 #define OSPF_AUTH_CMD_NOTSEEN              -2
  50
  51 /* OSPF options. */
  52 #define OSPF_OPTION_MT                   0x01  /* M/T */
  53 #define OSPF_OPTION_E                    0x02
  54 #define OSPF_OPTION_MC                   0x04
  55 #define OSPF_OPTION_NP                   0x08
  56 #define OSPF_OPTION_EA                   0x10
  57 #define OSPF_OPTION_DC                   0x20
  58 #define OSPF_OPTION_O                    0x40
  59 #define OSPF_OPTION_DN                   0x80
  60
  61 /* OSPF Database Description flags. */
  62 #define OSPF_DD_FLAG_MS                  0x01
  63 #define OSPF_DD_FLAG_M                   0x02
  64 #define OSPF_DD_FLAG_I                   0x04
  65 #define OSPF_DD_FLAG_ALL                 0x07
  66
  67 #define OSPF_LS_REFRESH_SHIFT       (60 * 15)
  68 #define OSPF_LS_REFRESH_JITTER      60
  69
  70 struct ospf_external {
  71         unsigned short instance;
  72         struct route_table *external_info;
  73 };
  74
  75 /* OSPF master for system wide configuration and variables. */
  76 struct ospf_master {
  77         /* OSPF instance. */
  78         struct list *ospf;
  79
  80         /* OSPF thread master. */
  81         struct thread_master *master;
  82
  83         /* Various OSPF global configuration. */
  84         uint8_t options;
  85 #define OSPF_MASTER_SHUTDOWN (1 << 0) /* deferred-shutdown */
  86 };
  87
  88 struct ospf_redist {
  89         unsigned short instance;
  90
  91         /* Redistribute metric info. */
  92         struct {
  93                 int type;  /* External metric type (E1 or E2).  */
  94                 int value; /* Value for static metric (24-bit).
  95                               -1 means metric value is not set. */
  96         } dmetric;
  97
  98         /* For redistribute route map. */
  99         struct {
 100                 char *name;
 101                 struct route_map *map;
 102         } route_map; /* +1 is for default-information */
 103 #define ROUTEMAP_NAME(R)   (R->route_map.name)
 104 #define ROUTEMAP(R) (R->route_map.map)
 105 };
 106
 107 /* OSPF area flood reduction info */
 108 struct ospf_area_fr_info {
 109         bool enabled;       /* Area support for Flood Reduction */
 110         bool configured;    /* Flood Reduction configured per area knob */
 111         bool state_changed; /* flood reduction state change info */
 112         int router_lsas_recv_dc_bit; /* Number of unique router lsas
 113                                       * received with DC bit set.
 114                                       * (excluding self)
 115                                       */
 116         bool area_ind_lsa_recvd;     /* Indication lsa received in this area */
 117         bool area_dc_clear;       /* Area has atleast one lsa with dc bit 0(
 118                                       * excluding indication lsa)
 119                                       */
 120         struct ospf_lsa *indication_lsa_self; /* Indication LSA generated
 121                                                * in the area.
 122                                                */
 123 };
 124
 125 /* ospf->config */
 126 enum {
 127         OSPF_RFC1583_COMPATIBLE =       (1 << 0),
 128         OSPF_OPAQUE_CAPABLE =           (1 << 2),
 129         OSPF_LOG_ADJACENCY_CHANGES =    (1 << 3),
 130         OSPF_LOG_ADJACENCY_DETAIL =     (1 << 4),
 131         OSPF_SEND_EXTRA_DATA_TO_ZEBRA = (1 << 5),
 132 };
 133
 134 /* TI-LFA */
 135 enum protection_type {
 136         OSPF_TI_LFA_UNDEFINED_PROTECTION,
 137         OSPF_TI_LFA_LINK_PROTECTION,
 138         OSPF_TI_LFA_NODE_PROTECTION,
 139 };
 140
 141 /* OSPF nonstop forwarding aka Graceful Restart */
 142 struct ospf_gr_info {
 143         bool restart_support;
 144         bool restart_in_progress;
 145         bool prepare_in_progress;
 146         bool finishing_restart;
 147         uint32_t grace_period;
 148         struct thread *t_grace_period;
 149 };
 150
 151 /* OSPF instance structure. */
 152 struct ospf {
 153         /* OSPF's running state based on the '[no] router ospf [<instance>]'
 154          * config. */
 155         uint8_t oi_running;
 156
 157         /* OSPF instance ID  */
 158         unsigned short instance;
 159
 160         /* OSPF Router ID. */
 161         struct in_addr router_id;       /* Configured automatically. */
 162         struct in_addr router_id_static; /* Configured manually. */
 163         struct in_addr router_id_zebra;
 164
 165         vrf_id_t vrf_id; /* VRF Id */
 166         char *name;      /* VRF name */
 167
 168         /* ABR/ASBR internal flags. */
 169         uint8_t flags;
 170 #define OSPF_FLAG_ABR           0x0001
 171 #define OSPF_FLAG_ASBR          0x0002
 172
 173         /* ABR type. */
 174         uint8_t abr_type;
 175 #define OSPF_ABR_UNKNOWN        0
 176 #define OSPF_ABR_STAND          1
 177 #define OSPF_ABR_IBM            2
 178 #define OSPF_ABR_CISCO          3
 179 #define OSPF_ABR_SHORTCUT       4
 180 #define OSPF_ABR_DEFAULT        OSPF_ABR_CISCO
 181
 182         /* NSSA ABR */
 183         uint8_t anyNSSA; /* Bump for every NSSA attached. */
 184
 185         /* Configuration bitmask, refer to enum above */
 186         uint8_t config;
 187
 188         /* Opaque-LSA administrative flags. */
 189         uint8_t opaque;
 190 #define OPAQUE_OPERATION_READY_BIT      (1 << 0)
 191
 192         /* RFC3137 stub router. Configured time to stay stub / max-metric */
 193         unsigned int stub_router_startup_time;  /* seconds */
 194         unsigned int stub_router_shutdown_time; /* seconds */
 195 #define OSPF_STUB_ROUTER_UNCONFIGURED     0
 196         uint8_t stub_router_admin_set;
 197 #define OSPF_STUB_ROUTER_ADMINISTRATIVE_SET     1
 198 #define OSPF_STUB_ROUTER_ADMINISTRATIVE_UNSET   0
 199
 200 #define OSPF_STUB_MAX_METRIC_SUMMARY_COST       0x00ff0000
 201
 202         /* LSA timers */
 203         unsigned int min_ls_interval; /* minimum delay between LSAs (in msec) */
 204         unsigned int min_ls_arrival;  /* minimum interarrival time between LSAs
 205                                          (in msec) */
 206
 207         /* SPF parameters */
 208         unsigned int spf_delay; /* SPF delay time. */
 209         unsigned int spf_holdtime;     /* SPF hold time. */
 210         unsigned int spf_max_holdtime; /* SPF maximum-holdtime */
 211         unsigned int
 212                 spf_hold_multiplier; /* Adaptive multiplier for hold time */
 213
 214         int default_originate;  /* Default information originate. */
 215 #define DEFAULT_ORIGINATE_NONE          0
 216 #define DEFAULT_ORIGINATE_ZEBRA         1
 217 #define DEFAULT_ORIGINATE_ALWAYS        2
 218         uint32_t ref_bandwidth;       /* Reference Bandwidth (Kbps). */
 219         struct route_table *networks; /* OSPF config networks. */
 220         struct list *vlinks;      /* Configured Virtual-Links. */
 221         struct list *areas;        /* OSPF areas. */
 222         struct route_table *nbr_nbma;
 223         struct ospf_area *backbone; /* Pointer to the Backbone Area. */
 224
 225         struct list *oiflist;             /* ospf interfaces */
 226         uint8_t passive_interface_default; /* passive-interface default */
 227
 228         /* LSDB of AS-external-LSAs. */
 229         struct ospf_lsdb *lsdb;
 230
 231         /* Flags. */
 232         int ase_calc;   /* ASE calculation flag. */
 233
 234         struct list *opaque_lsa_self; /* Type-11 Opaque-LSAs */
 235
 236         /* Routing tables. */
 237         struct route_table *old_table; /* Old routing table. */
 238         struct route_table *new_table; /* Current routing table. */
 239
 240         struct route_table *oall_rtrs; /* Old router RT. */
 241         struct route_table *all_rtrs;  /* New routers RT. */
 242
 243         struct route_table *old_rtrs; /* Old ABR/ASBR RT. */
 244         struct route_table *new_rtrs; /* New ABR/ASBR RT. */
 245
 246         struct route_table *new_external_route; /* New External Route. */
 247         struct route_table *old_external_route; /* Old External Route. */
 248
 249         struct route_table *external_lsas; /* Database of external LSAs,
 250                                               prefix is LSA's adv. network*/
 251
 252         /* Time stamps */
 253         struct timeval ts_spf;          /* SPF calculation time stamp. */
 254         struct timeval ts_spf_duration; /* Execution time of last SPF */
 255
 256         struct route_table *maxage_lsa; /* List of MaxAge LSA for deletion. */
 257         int redistribute;               /* Num of redistributed protocols. */
 258
 259         /* Threads. */
 260         struct thread *t_abr_task;        /* ABR task timer. */
 261         struct thread *t_abr_fr;          /* ABR FR timer. */
 262         struct thread *t_asbr_check;    /* ASBR check timer. */
 263         struct thread *t_asbr_nssa_redist_update; /* ASBR NSSA redistribution
 264                                                      update timer. */
 265         struct thread *t_distribute_update; /* Distirbute list update timer. */
 266         struct thread *t_spf_calc;        /* SPF calculation timer. */
 267         struct thread *t_ase_calc;        /* ASE calculation timer. */
 268         struct thread
 269                 *t_opaque_lsa_self; /* Type-11 Opaque-LSAs origin event. */
 270         struct thread *t_sr_update; /* Segment Routing update timer */
 271
 272         unsigned int maxage_delay;      /* Delay on Maxage remover timer, sec */
 273         struct thread *t_maxage;        /* MaxAge LSA remover timer. */
 274         struct thread *t_maxage_walker; /* MaxAge LSA checking timer. */
 275
 276         struct thread
 277                 *t_deferred_shutdown; /* deferred/stub-router shutdown timer*/
 278
 279         struct thread *t_write;
 280 #define OSPF_WRITE_INTERFACE_COUNT_DEFAULT    20
 281         struct thread *t_default_routemap_timer;
 282
 283         int write_oi_count; /* Num of packets sent per thread invocation */
 284         struct thread *t_read;
 285         int fd;
 286         struct stream *ibuf;
 287         struct list *oi_write_q;
 288
 289         /* Distribute lists out of other route sources. */
 290         struct {
 291                 char *name;
 292                 struct access_list *list;
 293         } dlist[ZEBRA_ROUTE_MAX];
 294 #define DISTRIBUTE_NAME(O,T)    (O)->dlist[T].name
 295 #define DISTRIBUTE_LIST(O,T)    (O)->dlist[T].list
 296
 297         /* OSPF redistribute configuration */
 298         struct list *redist[ZEBRA_ROUTE_MAX + 1];
 299
 300         /* Redistribute tag info. */
 301         route_tag_t
 302                 dtag[ZEBRA_ROUTE_MAX + 1]; // Pending: cant configure as of now
 303
 304         int default_metric; /* Default metric for redistribute. */
 305
 306 #define OSPF_LSA_REFRESHER_GRANULARITY 10
 307 #define OSPF_LSA_REFRESHER_SLOTS                                               \
 308         ((OSPF_LS_REFRESH_TIME + OSPF_LS_REFRESH_SHIFT)                        \
 309                  / OSPF_LSA_REFRESHER_GRANULARITY                              \
 310          + 1)
 311         struct {
 312                 uint16_t index;
 313                 struct list *qs[OSPF_LSA_REFRESHER_SLOTS];
 314         } lsa_refresh_queue;
 315
 316         struct thread *t_lsa_refresher;
 317         time_t lsa_refresher_started;
 318 #define OSPF_LSA_REFRESH_INTERVAL_DEFAULT 10
 319         uint16_t lsa_refresh_interval;
 320         uint16_t lsa_refresh_timer;
 321
 322         /* Distance parameter. */
 323         uint8_t distance_all;
 324         uint8_t distance_intra;
 325         uint8_t distance_inter;
 326         uint8_t distance_external;
 327
 328         /* Statistics for LSA origination. */
 329         uint32_t lsa_originate_count;
 330
 331         /* Statistics for LSA used for new instantiation. */
 332         uint32_t rx_lsa_count;
 333
 334         struct route_table *distance_table;
 335
 336         /* Used during ospf instance going down send LSDB
 337          * update to neighbors immediatly */
 338         uint8_t inst_shutdown;
 339
 340         /* Enable or disable sending proactive ARP requests. */
 341         bool proactive_arp;
 342 #define OSPF_PROACTIVE_ARP_DEFAULT true
 343
 344         /* Redistributed external information. */
 345         struct list *external[ZEBRA_ROUTE_MAX + 1];
 346 #define EXTERNAL_INFO(E) (E->external_info)
 347
 348         /* Graceful restart Helper supported configs*/
 349         /* Supported grace interval*/
 350         uint32_t supported_grace_time;
 351
 352         /* Helper support
 353          * Supported : True
 354          * Not Supported : False.
 355          */
 356         bool is_helper_supported;
 357
 358         /* Support for strict LSA check.
 359          * if it is set,Helper aborted
 360          * upon a TOPO change.
 361          */
 362         bool strict_lsa_check;
 363
 364         /* Support as HELPER only for
 365          * planned restarts.
 366          */
 367         bool only_planned_restart;
 368
 369         /* This list contains the advertisement
 370          * routerids which are not support for HELPERs.
 371          */
 372         struct hash *enable_rtr_list;
 373
 374         /* HELPER for number of active
 375          * RESTARTERs.
 376          */
 377         uint16_t active_restarter_cnt;
 378
 379         /* last HELPER exit reason */
 380         uint32_t last_exit_reason;
 381
 382         /* delay timer to process external routes
 383          * with summary address.
 384          */
 385         struct thread *t_external_aggr;
 386
 387         /* delay interval in seconds */
 388         uint16_t aggr_delay_interval;
 389
 390         /* Table of configured Aggregate addresses */
 391         struct route_table *rt_aggr_tbl;
 392
 393         /* used as argument for aggr delay
 394          * timer thread.
 395          */
 396         int aggr_action;
 397
 398         /* Max number of multiple paths
 399          * to support ECMP.
 400          */
 401         uint16_t max_multipath;
 402
 403         /* MPLS LDP-IGP Sync */
 404         struct ldp_sync_info_cmd ldp_sync_cmd;
 405
 406         /* OSPF Graceful Restart info */
 407         struct ospf_gr_info gr_info;
 408
 409         /* TI-LFA support for all interfaces. */
 410         bool ti_lfa_enabled;
 411         enum protection_type ti_lfa_protection_type;
 412
 413         /* Flood Reduction configuration state */
 414         bool fr_configured;
 415
 416         QOBJ_FIELDS;
 417 };
 418 DECLARE_QOBJ_TYPE(ospf);
 419
 420 enum ospf_ti_lfa_p_q_space_adjacency {
 421         OSPF_TI_LFA_P_Q_SPACE_ADJACENT,
 422         OSPF_TI_LFA_P_Q_SPACE_NON_ADJACENT,
 423 };
 424
 425 enum ospf_ti_lfa_node_type {
 426         OSPF_TI_LFA_UNDEFINED_NODE,
 427         OSPF_TI_LFA_PQ_NODE,
 428         OSPF_TI_LFA_P_NODE,
 429         OSPF_TI_LFA_Q_NODE,
 430 };
 431
 432 struct ospf_ti_lfa_node_info {
 433         struct vertex *node;
 434         enum ospf_ti_lfa_node_type type;
 435         struct in_addr nexthop;
 436 };
 437
 438 struct ospf_ti_lfa_inner_backup_path_info {
 439         struct ospf_ti_lfa_node_info p_node_info;
 440         struct ospf_ti_lfa_node_info q_node_info;
 441         struct mpls_label_stack *label_stack;
 442 };
 443
 444 struct protected_resource {
 445         enum protection_type type;
 446
 447         /* Link Protection */
 448         struct router_lsa_link *link;
 449
 450         /* Node Protection */
 451         struct in_addr router_id;
 452 };
 453
 454 PREDECL_RBTREE_UNIQ(q_spaces);
 455 struct q_space {
 456         struct vertex *root;
 457         struct list *vertex_list;
 458         struct mpls_label_stack *label_stack;
 459         struct in_addr nexthop;
 460         struct list *pc_path;
 461         struct ospf_ti_lfa_node_info *p_node_info;
 462         struct ospf_ti_lfa_node_info *q_node_info;
 463         struct q_spaces_item q_spaces_item;
 464 };
 465
 466 PREDECL_RBTREE_UNIQ(p_spaces);
 467 struct p_space {
 468         struct vertex *root;
 469         struct protected_resource *protected_resource;
 470         struct q_spaces_head *q_spaces;
 471         struct list *vertex_list;
 472         struct vertex *pc_spf;
 473         struct list *pc_vertex_list;
 474         struct p_spaces_item p_spaces_item;
 475 };
 476
 477 /* OSPF area structure. */
 478 struct ospf_area {
 479         /* OSPF instance. */
 480         struct ospf *ospf;
 481
 482         /* Zebra interface list belonging to the area. */
 483         struct list *oiflist;
 484
 485         /* Area ID. */
 486         struct in_addr area_id;
 487
 488         /* Area ID format. */
 489         int area_id_fmt;
 490 #define OSPF_AREA_ID_FMT_DOTTEDQUAD     1
 491 #define OSPF_AREA_ID_FMT_DECIMAL        2
 492
 493         /* Address range. */
 494         struct list *address_range;
 495
 496         /* Configured variables. */
 497         int external_routing;    /* ExternalRoutingCapability. */
 498         int no_summary;          /* Don't inject summaries into stub.*/
 499         int shortcut_configured; /* Area configured as shortcut. */
 500 #define OSPF_SHORTCUT_DEFAULT   0
 501 #define OSPF_SHORTCUT_ENABLE    1
 502 #define OSPF_SHORTCUT_DISABLE   2
 503         int shortcut_capability; /* Other ABRs agree on S-bit */
 504         uint32_t default_cost;   /* StubDefaultCost. */
 505         int auth_type;           /* Authentication type. */
 506         int suppress_fa;         /* Suppress forwarding address in NSSA ABR */
 507
 508         uint8_t NSSATranslatorRole; /* NSSA configured role */
 509 #define OSPF_NSSA_ROLE_NEVER     0
 510 #define OSPF_NSSA_ROLE_CANDIDATE 1
 511 #define OSPF_NSSA_ROLE_ALWAYS    2
 512         uint8_t NSSATranslatorState; /* NSSA operational role */
 513 #define OSPF_NSSA_TRANSLATE_DISABLED 0
 514 #define OSPF_NSSA_TRANSLATE_ENABLED  1
 515         int NSSATranslatorStabilityInterval;
 516
 517         uint8_t transit; /* TransitCapability. */
 518 #define OSPF_TRANSIT_FALSE      0
 519 #define OSPF_TRANSIT_TRUE       1
 520         struct route_table *ranges; /* Configured Area Ranges. */
 521
 522         /* RFC3137 stub router state flags for area */
 523         uint8_t stub_router_state;
 524 #define OSPF_AREA_ADMIN_STUB_ROUTED     (1 << 0) /* admin stub-router set */
 525 #define OSPF_AREA_IS_STUB_ROUTED        (1 << 1) /* stub-router active */
 526 #define OSPF_AREA_WAS_START_STUB_ROUTED (1 << 2) /* startup SR was done */
 527         /* Area related LSDBs[Type1-4]. */
 528         struct ospf_lsdb *lsdb;
 529
 530         /* Self-originated LSAs. */
 531         struct ospf_lsa *router_lsa_self;
 532         struct list *opaque_lsa_self; /* Type-10 Opaque-LSAs */
 533
 534         /* Area announce list. */
 535         struct {
 536                 char *name;
 537                 struct access_list *list;
 538         } _export;
 539 #define EXPORT_NAME(A)  (A)->_export.name
 540 #define EXPORT_LIST(A)  (A)->_export.list
 541
 542         /* Area acceptance list. */
 543         struct {
 544                 char *name;
 545                 struct access_list *list;
 546         } import;
 547 #define IMPORT_NAME(A)  (A)->import.name
 548 #define IMPORT_LIST(A)  (A)->import.list
 549
 550         /* Type 3 LSA Area prefix-list. */
 551         struct {
 552                 char *name;
 553                 struct prefix_list *list;
 554         } plist_in;
 555 #define PREFIX_LIST_IN(A)   (A)->plist_in.list
 556 #define PREFIX_NAME_IN(A)   (A)->plist_in.name
 557
 558         struct {
 559                 char *name;
 560                 struct prefix_list *list;
 561         } plist_out;
 562 #define PREFIX_LIST_OUT(A)  (A)->plist_out.list
 563 #define PREFIX_NAME_OUT(A)  (A)->plist_out.name
 564
 565         /* Shortest Path Tree. */
 566         struct vertex *spf;
 567         struct list *spf_vertex_list;
 568
 569         bool spf_dry_run;   /* flag for checking if the SPF calculation is
 570                                intended for the local RIB */
 571         bool spf_root_node; /* flag for checking if the calculating node is the
 572                                root node of the SPF tree */
 573
 574         /* TI-LFA protected link for SPF calculations */
 575         struct protected_resource *spf_protected_resource;
 576
 577         /* P/Q spaces for TI-LFA */
 578         struct p_spaces_head *p_spaces;
 579
 580         /* Threads. */
 581         struct thread *t_stub_router;     /* Stub-router timer */
 582         struct thread *t_opaque_lsa_self; /* Type-10 Opaque-LSAs origin. */
 583
 584         /* Statistics field. */
 585         uint32_t spf_calculation; /* SPF Calculation Count. */
 586
 587         /* reverse SPF (used for TI-LFA Q spaces) */
 588         bool spf_reversed;
 589
 590         /* Time stamps. */
 591         struct timeval ts_spf; /* SPF calculation time stamp. */
 592
 593         /* Router count. */
 594         uint32_t abr_count;  /* ABR router in this area. */
 595         uint32_t asbr_count; /* ASBR router in this area. */
 596
 597         /* Counters. */
 598         uint32_t act_ints;  /* Active interfaces. */
 599         uint32_t full_nbrs; /* Fully adjacent neighbors. */
 600         uint32_t full_vls;  /* Fully adjacent virtual neighbors. */
 601
 602         struct ospf_area_fr_info fr_info; /* Flood reduction info. */
 603 };
 604
 605 /* OSPF config network structure. */
 606 struct ospf_network {
 607         /* Area ID. */
 608         struct in_addr area_id;
 609         int area_id_fmt;
 610 };
 611
 612 /* OSPF NBMA neighbor structure. */
 613 struct ospf_nbr_nbma {
 614         /* Neighbor IP address. */
 615         struct in_addr addr;
 616
 617         /* OSPF interface. */
 618         struct ospf_interface *oi;
 619
 620         /* OSPF neighbor structure. */
 621         struct ospf_neighbor *nbr;
 622
 623         /* Neighbor priority. */
 624         uint8_t priority;
 625
 626         /* Poll timer value. */
 627         uint32_t v_poll;
 628
 629         /* Poll timer thread. */
 630         struct thread *t_poll;
 631
 632         /* State change. */
 633         uint32_t state_change;
 634 };
 635
 636 /* Macro. */
 637 #define OSPF_AREA_SAME(X, Y)                                                   \
 638         (memcmp((X->area_id), (Y->area_id), IPV4_MAX_BYTELEN) == 0)
 639
 640 #define IS_OSPF_ABR(O)          ((O)->flags & OSPF_FLAG_ABR)
 641 #define IS_OSPF_ASBR(O)         ((O)->flags & OSPF_FLAG_ASBR)
 642
 643 #define OSPF_IS_AREA_ID_BACKBONE(I) ((I).s_addr == OSPF_AREA_BACKBONE)
 644 #define OSPF_IS_AREA_BACKBONE(A) OSPF_IS_AREA_ID_BACKBONE ((A)->area_id)
 645
 646 #ifdef roundup
 647 #  define ROUNDUP(val, gran)    roundup(val, gran)
 648 #else  /* roundup */
 649 #  define ROUNDUP(val, gran)    (((val) - 1 | (gran) - 1) + 1)
 650 #endif /* roundup */
 651
 652 #define LSA_OPTIONS_GET(area)                                                  \
 653         (((area)->external_routing == OSPF_AREA_DEFAULT) ? OSPF_OPTION_E : 0)
 654 #define LSA_OPTIONS_NSSA_GET(area)                                             \
 655         (((area)->external_routing == OSPF_AREA_NSSA) ? OSPF_OPTION_NP : 0)
 656
 657 #define OSPF_TIMER_ON(T,F,V) thread_add_timer (master,(F),ospf,(V),&(T))
 658 #define OSPF_AREA_TIMER_ON(T,F,V) thread_add_timer (master, (F), area, (V), &(T))
 659 #define OSPF_POLL_TIMER_ON(T,F,V) thread_add_timer (master, (F), nbr_nbma, (V), &(T))
 660
 661 /* Extern variables. */
 662 extern struct ospf_master *om;
 663 extern unsigned short ospf_instance;
 664 extern const int ospf_redistributed_proto_max;
 665 extern struct zclient *zclient;
 666 extern struct thread_master *master;
 667 extern int ospf_zlog;
 668 extern struct zebra_privs_t ospfd_privs;
 669
 670 /* Prototypes. */
 671 extern const char *ospf_redist_string(unsigned int route_type);
 672 extern struct ospf *ospf_lookup_instance(unsigned short instance);
 673 extern struct ospf *ospf_lookup(unsigned short instance, const char *name);
 674 extern struct ospf *ospf_get(unsigned short instance, const char *name,
 675                              bool *created);
 676 extern struct ospf *ospf_new_alloc(unsigned short instance, const char *name);
 677 extern struct ospf *ospf_lookup_by_inst_name(unsigned short instance,
 678                                              const char *name);
 679 extern struct ospf *ospf_lookup_by_vrf_id(vrf_id_t vrf_id);
 680 extern uint32_t ospf_count_area_params(struct ospf *ospf);
 681 extern void ospf_finish(struct ospf *ospf);
 682 extern void ospf_process_refresh_data(struct ospf *ospf, bool reset);
 683 extern void ospf_router_id_update(struct ospf *ospf);
 684 extern void ospf_process_reset(struct ospf *ospf);
 685 extern void ospf_neighbor_reset(struct ospf *ospf, struct in_addr nbr_id,
 686                                 const char *nbr_str);
 687 extern int ospf_network_set(struct ospf *ospf, struct prefix_ipv4 *p,
 688                             struct in_addr area_id, int df);
 689 extern int ospf_network_unset(struct ospf *ospf, struct prefix_ipv4 *p,
 690                               struct in_addr aread_id);
 691 extern int ospf_area_display_format_set(struct ospf *ospf,
 692                                         struct ospf_area *area, int df);
 693 extern int ospf_area_stub_set(struct ospf *ospf, struct in_addr area_id);
 694 extern int ospf_area_stub_unset(struct ospf *ospf, struct in_addr area_id);
 695 extern int ospf_area_no_summary_set(struct ospf *ospf, struct in_addr area_id);
 696 extern int ospf_area_no_summary_unset(struct ospf *ospf,
 697                                       struct in_addr area_id);
 698 extern int ospf_area_nssa_set(struct ospf *ospf, struct in_addr area_id);
 699 extern int ospf_area_nssa_unset(struct ospf *ospf, struct in_addr area_id,
 700                                 int argc);
 701 extern int ospf_area_nssa_suppress_fa_set(struct ospf *ospf,
 702                                           struct in_addr area_id);
 703 extern int ospf_area_nssa_suppress_fa_unset(struct ospf *ospf,
 704                                             struct in_addr area_id);
 705 extern int ospf_area_nssa_translator_role_set(struct ospf *ospf,
 706                                               struct in_addr area_id, int role);
 707 extern int ospf_area_export_list_set(struct ospf *ospf,
 708                                      struct ospf_area *area_id,
 709                                      const char *list_name);
 710 extern int ospf_area_export_list_unset(struct ospf *ospf,
 711                                        struct ospf_area *area_id);
 712 extern int ospf_area_import_list_set(struct ospf *ospf,
 713                                      struct ospf_area *area_id,
 714                                      const char *name);
 715 extern int ospf_area_import_list_unset(struct ospf *ospf,
 716                                        struct ospf_area *area_id);
 717 extern int ospf_area_shortcut_set(struct ospf *ospf, struct ospf_area *area_id,
 718                                   int mode);
 719 extern int ospf_area_shortcut_unset(struct ospf *ospf,
 720                                     struct ospf_area *area_id);
 721 extern int ospf_timers_refresh_set(struct ospf *ospf, int interval);
 722 extern int ospf_timers_refresh_unset(struct ospf *ospf);
 723 void ospf_area_lsdb_discard_delete(struct ospf_area *area);
 724 extern int ospf_nbr_nbma_set(struct ospf *ospf, struct in_addr nbr_addr);
 725 extern int ospf_nbr_nbma_unset(struct ospf *ospf, struct in_addr nbr_addr);
 726 extern int ospf_nbr_nbma_priority_set(struct ospf *ospf,
 727                                       struct in_addr nbr_addr,
 728                                       uint8_t priority);
 729 extern int ospf_nbr_nbma_priority_unset(struct ospf *ospf,
 730                                         struct in_addr nbr_addr);
 731 extern int ospf_nbr_nbma_poll_interval_set(struct ospf *ospf,
 732                                            struct in_addr nbr_addr,
 733                                            unsigned int interval);
 734 extern int ospf_nbr_nbma_poll_interval_unset(struct ospf *ospf,
 735                                              struct in_addr addr);
 736 extern void ospf_if_update(struct ospf *ospf, struct interface *ifp);
 737 extern void ospf_ls_upd_queue_empty(struct ospf_interface *oi);
 738 extern void ospf_terminate(void);
 739 extern void ospf_nbr_nbma_if_update(struct ospf *ospf,
 740                                     struct ospf_interface *oi);
 741 extern struct ospf_nbr_nbma *ospf_nbr_nbma_lookup(struct ospf *ospf,
 742                                                   struct in_addr nbr_addr);
 743 extern int ospf_oi_count(struct interface *ifp);
 744
 745 extern struct ospf_area *ospf_area_new(struct ospf *ospf,
 746                                        struct in_addr area_id);
 747 extern struct ospf_area *ospf_area_get(struct ospf *ospf,
 748                                        struct in_addr area_id);
 749 extern void ospf_area_check_free(struct ospf *ospf, struct in_addr area_id);
 750 extern struct ospf_area *ospf_area_lookup_by_area_id(struct ospf *ospf,
 751                                                      struct in_addr area_id);
 752 extern void ospf_area_add_if(struct ospf_area *oa, struct ospf_interface *oi);
 753 extern void ospf_area_del_if(struct ospf_area *oa, struct ospf_interface *oi);
 754
 755 extern void ospf_interface_area_set(struct ospf *ospf, struct interface *ifp);
 756 extern void ospf_interface_area_unset(struct ospf *ospf, struct interface *ifp);
 757
 758 extern void ospf_route_map_init(void);
 759
 760 extern void ospf_master_init(struct thread_master *master);
 761 extern void ospf_vrf_init(void);
 762 extern void ospf_vrf_terminate(void);
 763 extern void ospf_vrf_link(struct ospf *ospf, struct vrf *vrf);
 764 extern void ospf_vrf_unlink(struct ospf *ospf, struct vrf *vrf);
 765 const char *ospf_vrf_id_to_name(vrf_id_t vrf_id);
 766 int ospf_area_nssa_no_summary_set(struct ospf *ospf, struct in_addr area_id);
 767
 768 const char *ospf_get_name(const struct ospf *ospf);
 769 extern struct ospf_interface *add_ospf_interface(struct connected *co,
 770                                                  struct ospf_area *area);
 771
 772 extern int p_spaces_compare_func(const struct p_space *a,
 773                                  const struct p_space *b);
 774 extern int q_spaces_compare_func(const struct q_space *a,
 775                                  const struct q_space *b);
 776
 777 #endif /* _ZEBRA_OSPFD_H */