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diff --git a/ospfd/ospfd.h b/ospfd/ospfd.h
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+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * OSPFd main header.
+ * Copyright (C) 1998, 99, 2000 Kunihiro Ishiguro, Toshiaki Takada
+ */
+
+#ifndef _ZEBRA_OSPFD_H
+#define _ZEBRA_OSPFD_H
+
+#include <zebra.h>
+#include "typesafe.h"
+#include "qobj.h"
+#include "libospf.h"
+#include "ldp_sync.h"
+
+#include "filter.h"
+#include "log.h"
+#include "vrf.h"
+
+#include "ospf_memory.h"
+#include "ospf_dump_api.h"
+
+#define OSPF_VERSION 2
+
+/* VTY port number. */
+#define OSPF_VTY_PORT 2604
+
+/* IP TTL for OSPF protocol. */
+#define OSPF_IP_TTL 1
+#define OSPF_VL_IP_TTL 100
+
+/* Default configuration file name for ospfd. */
+#define OSPF_DEFAULT_CONFIG "ospfd.conf"
+
+#define OSPF_NSSA_TRANS_STABLE_DEFAULT 40
+
+#define OSPF_ALLSPFROUTERS 0xe0000005 /* 224.0.0.5 */
+#define OSPF_ALLDROUTERS 0xe0000006 /* 224.0.0.6 */
+
+/* OSPF Authentication Type. */
+#define OSPF_AUTH_NULL 0
+#define OSPF_AUTH_SIMPLE 1
+#define OSPF_AUTH_CRYPTOGRAPHIC 2
+/* For Interface authentication setting default */
+#define OSPF_AUTH_NOTSET -1
+/* For the consumption and sanity of the command handler */
+/* DO NIOT REMOVE!!! Need to detect whether a value has
+ been given or not in VLink command handlers */
+#define OSPF_AUTH_CMD_NOTSEEN -2
+
+/* OSPF options. */
+#define OSPF_OPTION_MT 0x01 /* M/T */
+#define OSPF_OPTION_E 0x02
+#define OSPF_OPTION_MC 0x04
+#define OSPF_OPTION_NP 0x08
+#define OSPF_OPTION_EA 0x10
+#define OSPF_OPTION_DC 0x20
+#define OSPF_OPTION_O 0x40
+#define OSPF_OPTION_DN 0x80
+
+/* OSPF Database Description flags. */
+#define OSPF_DD_FLAG_MS 0x01
+#define OSPF_DD_FLAG_M 0x02
+#define OSPF_DD_FLAG_I 0x04
+#define OSPF_DD_FLAG_ALL 0x07
+
+#define OSPF_LS_REFRESH_SHIFT (60 * 15)
+#define OSPF_LS_REFRESH_JITTER 60
+
+/* Default socket buffer size */
+#define OSPF_DEFAULT_SOCK_BUFSIZE (8 * 1024 * 1024)
+
+/* OSPF config processing timer thread */
+extern struct event *t_ospf_cfg;
+
+struct ospf_external {
+ unsigned short instance;
+ struct route_table *external_info;
+};
+
+/* OSPF master for system wide configuration and variables. */
+struct ospf_master {
+ /* OSPF instance. */
+ struct list *ospf;
+
+ /* OSPF thread master. */
+ struct event_loop *master;
+
+ /* Various OSPF global configuration. */
+ uint8_t options;
+#define OSPF_MASTER_SHUTDOWN (1 << 0) /* deferred-shutdown */
+};
+
+struct ospf_redist {
+ unsigned short instance;
+
+ /* Redistribute metric info. */
+ struct {
+ int type; /* External metric type (E1 or E2). */
+ int value; /* Value for static metric (24-bit).
+ -1 means metric value is not set. */
+ } dmetric;
+
+ /* For redistribute route map. */
+ struct {
+ char *name;
+ struct route_map *map;
+ } route_map; /* +1 is for default-information */
+#define ROUTEMAP_NAME(R) (R->route_map.name)
+#define ROUTEMAP(R) (R->route_map.map)
+};
+
+/* OSPF area flood reduction info */
+struct ospf_area_fr_info {
+ bool enabled; /* Area support for Flood Reduction */
+ bool configured; /* Flood Reduction configured per area knob */
+ bool state_changed; /* flood reduction state change info */
+ int router_lsas_recv_dc_bit; /* Number of unique router lsas
+ * received with DC bit set.
+ * (excluding self)
+ */
+ bool area_ind_lsa_recvd; /* Indication lsa received in this area */
+ bool area_dc_clear; /* Area has atleast one lsa with dc bit 0(
+ * excluding indication lsa)
+ */
+ struct ospf_lsa *indication_lsa_self; /* Indication LSA generated
+ * in the area.
+ */
+};
+
+/* ospf->config */
+enum {
+ OSPF_RFC1583_COMPATIBLE = (1 << 0),
+ OSPF_OPAQUE_CAPABLE = (1 << 2),
+ OSPF_LOG_ADJACENCY_CHANGES = (1 << 3),
+ OSPF_LOG_ADJACENCY_DETAIL = (1 << 4),
+ OSPF_SEND_EXTRA_DATA_TO_ZEBRA = (1 << 5),
+};
+
+/* TI-LFA */
+enum protection_type {
+ OSPF_TI_LFA_UNDEFINED_PROTECTION,
+ OSPF_TI_LFA_LINK_PROTECTION,
+ OSPF_TI_LFA_NODE_PROTECTION,
+};
+
+/* OSPF nonstop forwarding aka Graceful Restart */
+struct ospf_gr_info {
+ bool restart_support;
+ bool restart_in_progress;
+ bool prepare_in_progress;
+ bool finishing_restart;
+ uint32_t grace_period;
+ int reason;
+ char *exit_reason;
+ struct event *t_grace_period;
+};
+
+/* OSPF instance structure. */
+struct ospf {
+ /* OSPF's running state based on the '[no] router ospf [<instance>]'
+ * config. */
+ uint8_t oi_running;
+
+ /* OSPF instance ID */
+ unsigned short instance;
+
+ /* OSPF Router ID. */
+ struct in_addr router_id; /* Configured automatically. */
+ struct in_addr router_id_static; /* Configured manually. */
+ struct in_addr router_id_zebra;
+
+ vrf_id_t vrf_id; /* VRF Id */
+ char *name; /* VRF name */
+
+ /* ABR/ASBR internal flags. */
+ uint8_t flags;
+#define OSPF_FLAG_ABR 0x0001
+#define OSPF_FLAG_ASBR 0x0002
+
+ /* ABR type. */
+ uint8_t abr_type;
+#define OSPF_ABR_UNKNOWN 0
+#define OSPF_ABR_STAND 1
+#define OSPF_ABR_IBM 2
+#define OSPF_ABR_CISCO 3
+#define OSPF_ABR_SHORTCUT 4
+#define OSPF_ABR_DEFAULT OSPF_ABR_CISCO
+
+ /* NSSA ABR */
+ uint8_t anyNSSA; /* Bump for every NSSA attached. */
+
+ /* Configuration bitmask, refer to enum above */
+ uint8_t config;
+
+ /* Opaque-LSA administrative flags. */
+ uint8_t opaque;
+#define OPAQUE_OPERATION_READY_BIT (1 << 0)
+
+ /* RFC3137 stub router. Configured time to stay stub / max-metric */
+ unsigned int stub_router_startup_time; /* seconds */
+ unsigned int stub_router_shutdown_time; /* seconds */
+#define OSPF_STUB_ROUTER_UNCONFIGURED 0
+ uint8_t stub_router_admin_set;
+#define OSPF_STUB_ROUTER_ADMINISTRATIVE_SET 1
+#define OSPF_STUB_ROUTER_ADMINISTRATIVE_UNSET 0
+
+#define OSPF_STUB_MAX_METRIC_SUMMARY_COST 0x00ff0000
+
+ /* LSA timers */
+ unsigned int min_ls_interval; /* minimum delay between LSAs (in msec) */
+ unsigned int min_ls_arrival; /* minimum interarrival time between LSAs
+ (in msec) */
+
+ /* SPF parameters */
+ unsigned int spf_delay; /* SPF delay time. */
+ unsigned int spf_holdtime; /* SPF hold time. */
+ unsigned int spf_max_holdtime; /* SPF maximum-holdtime */
+ unsigned int
+ spf_hold_multiplier; /* Adaptive multiplier for hold time */
+
+ int default_originate; /* Default information originate. */
+#define DEFAULT_ORIGINATE_NONE 0
+#define DEFAULT_ORIGINATE_ZEBRA 1
+#define DEFAULT_ORIGINATE_ALWAYS 2
+ uint32_t ref_bandwidth; /* Reference Bandwidth (Kbps). */
+ struct route_table *networks; /* OSPF config networks. */
+ struct list *vlinks; /* Configured Virtual-Links. */
+ struct list *areas; /* OSPF areas. */
+ struct route_table *nbr_nbma;
+ struct ospf_area *backbone; /* Pointer to the Backbone Area. */
+
+ struct list *oiflist; /* ospf interfaces */
+ uint8_t passive_interface_default; /* passive-interface default */
+
+ /* LSDB of AS-external-LSAs. */
+ struct ospf_lsdb *lsdb;
+
+ /* Flags. */
+ int ase_calc; /* ASE calculation flag. */
+
+ struct list *opaque_lsa_self; /* Type-11 Opaque-LSAs */
+
+ /* Routing tables. */
+ struct route_table *old_table; /* Old routing table. */
+ struct route_table *new_table; /* Current routing table. */
+
+ struct route_table *oall_rtrs; /* Old router RT. */
+ struct route_table *all_rtrs; /* New routers RT. */
+
+ struct route_table *old_rtrs; /* Old ABR/ASBR RT. */
+ struct route_table *new_rtrs; /* New ABR/ASBR RT. */
+
+ struct route_table *new_external_route; /* New External Route. */
+ struct route_table *old_external_route; /* Old External Route. */
+
+ struct route_table *external_lsas; /* Database of external LSAs,
+ prefix is LSA's adv. network*/
+
+ /* Time stamps */
+ struct timeval ts_spf; /* SPF calculation time stamp. */
+ struct timeval ts_spf_duration; /* Execution time of last SPF */
+
+ struct route_table *maxage_lsa; /* List of MaxAge LSA for deletion. */
+ int redistribute; /* Num of redistributed protocols. */
+
+ /* Threads. */
+ struct event *t_abr_task; /* ABR task timer. */
+ struct event *t_abr_fr; /* ABR FR timer. */
+ struct event *t_asbr_check; /* ASBR check timer. */
+ struct event *t_asbr_redist_update; /* ASBR redistribution update
+ timer. */
+ struct event *t_distribute_update; /* Distirbute list update timer. */
+ struct event *t_spf_calc; /* SPF calculation timer. */
+ struct event *t_ase_calc; /* ASE calculation timer. */
+ struct event *t_opaque_lsa_self; /* Type-11 Opaque-LSAs origin event. */
+ struct event *t_sr_update; /* Segment Routing update timer */
+
+ unsigned int maxage_delay; /* Delay on Maxage remover timer, sec */
+ struct event *t_maxage; /* MaxAge LSA remover timer. */
+ struct event *t_maxage_walker; /* MaxAge LSA checking timer. */
+
+ struct event
+ *t_deferred_shutdown; /* deferred/stub-router shutdown timer*/
+
+ struct event *t_write;
+#define OSPF_WRITE_INTERFACE_COUNT_DEFAULT 20
+ struct event *t_default_routemap_timer;
+
+ int write_oi_count; /* Num of packets sent per thread invocation */
+ struct event *t_read;
+ int fd;
+ struct stream *ibuf;
+ struct list *oi_write_q;
+
+ /* Distribute lists out of other route sources. */
+ struct {
+ char *name;
+ struct access_list *list;
+ } dlist[ZEBRA_ROUTE_MAX];
+#define DISTRIBUTE_NAME(O,T) (O)->dlist[T].name
+#define DISTRIBUTE_LIST(O,T) (O)->dlist[T].list
+
+ /* OSPF redistribute configuration */
+ struct list *redist[ZEBRA_ROUTE_MAX + 1];
+
+ /* Redistribute tag info. */
+ route_tag_t
+ dtag[ZEBRA_ROUTE_MAX + 1]; // Pending: cant configure as of now
+
+ int default_metric; /* Default metric for redistribute. */
+
+ /* NSSA default-information-originate */
+ struct {
+ /* # of NSSA areas requesting default information */
+ uint16_t refcnt;
+
+ /*
+ * Whether a default route known through non-OSPF protocol is
+ * present in the RIB.
+ */
+ bool status;
+ } nssa_default_import_check;
+
+#define OSPF_LSA_REFRESHER_GRANULARITY 10
+#define OSPF_LSA_REFRESHER_SLOTS \
+ ((OSPF_LS_REFRESH_TIME + OSPF_LS_REFRESH_SHIFT) \
+ / OSPF_LSA_REFRESHER_GRANULARITY \
+ + 1)
+ struct {
+ uint16_t index;
+ struct list *qs[OSPF_LSA_REFRESHER_SLOTS];
+ } lsa_refresh_queue;
+
+ struct event *t_lsa_refresher;
+ time_t lsa_refresher_started;
+#define OSPF_LSA_REFRESH_INTERVAL_DEFAULT 10
+ uint16_t lsa_refresh_interval;
+ uint16_t lsa_refresh_timer;
+
+ /* Distance parameter. */
+ uint8_t distance_all;
+ uint8_t distance_intra;
+ uint8_t distance_inter;
+ uint8_t distance_external;
+
+ /* Statistics for LSA origination. */
+ uint32_t lsa_originate_count;
+
+ /* Statistics for LSA used for new instantiation. */
+ uint32_t rx_lsa_count;
+
+ struct route_table *distance_table;
+
+ /* Used during ospf instance going down send LSDB
+ * update to neighbors immediatly */
+ uint8_t inst_shutdown;
+
+ /* Enable or disable sending proactive ARP requests. */
+ bool proactive_arp;
+#define OSPF_PROACTIVE_ARP_DEFAULT true
+
+ /* Redistributed external information. */
+ struct list *external[ZEBRA_ROUTE_MAX + 1];
+#define EXTERNAL_INFO(E) (E->external_info)
+
+ /* Graceful restart Helper supported configs*/
+ /* Supported grace interval*/
+ uint32_t supported_grace_time;
+
+ /* Helper support
+ * Supported : True
+ * Not Supported : False.
+ */
+ bool is_helper_supported;
+
+ /* Support for strict LSA check.
+ * if it is set,Helper aborted
+ * upon a TOPO change.
+ */
+ bool strict_lsa_check;
+
+ /* Support as HELPER only for
+ * planned restarts.
+ */
+ bool only_planned_restart;
+
+ /* This list contains the advertisement
+ * routerids which are not support for HELPERs.
+ */
+ struct hash *enable_rtr_list;
+
+ /* HELPER for number of active
+ * RESTARTERs.
+ */
+ uint16_t active_restarter_cnt;
+
+ /* last HELPER exit reason */
+ uint32_t last_exit_reason;
+
+ /* delay timer to process external routes
+ * with summary address.
+ */
+ struct event *t_external_aggr;
+
+ /* delay interval in seconds */
+ uint16_t aggr_delay_interval;
+
+ /* Table of configured Aggregate addresses */
+ struct route_table *rt_aggr_tbl;
+
+ /* used as argument for aggr delay
+ * timer thread.
+ */
+ int aggr_action;
+
+ /* Max number of multiple paths
+ * to support ECMP.
+ */
+ uint16_t max_multipath;
+
+ /* MPLS LDP-IGP Sync */
+ struct ldp_sync_info_cmd ldp_sync_cmd;
+
+ /* OSPF Graceful Restart info */
+ struct ospf_gr_info gr_info;
+
+ /* TI-LFA support for all interfaces. */
+ bool ti_lfa_enabled;
+ enum protection_type ti_lfa_protection_type;
+
+ /* Flood Reduction configuration state */
+ bool fr_configured;
+
+ /* Socket buffer sizes */
+ uint32_t recv_sock_bufsize;
+ uint32_t send_sock_bufsize;
+
+ /* Per-interface write socket */
+ bool intf_socket_enabled;
+
+ QOBJ_FIELDS;
+};
+DECLARE_QOBJ_TYPE(ospf);
+
+enum ospf_ti_lfa_p_q_space_adjacency {
+ OSPF_TI_LFA_P_Q_SPACE_ADJACENT,
+ OSPF_TI_LFA_P_Q_SPACE_NON_ADJACENT,
+};
+
+enum ospf_ti_lfa_node_type {
+ OSPF_TI_LFA_UNDEFINED_NODE,
+ OSPF_TI_LFA_PQ_NODE,
+ OSPF_TI_LFA_P_NODE,
+ OSPF_TI_LFA_Q_NODE,
+};
+
+struct ospf_ti_lfa_node_info {
+ struct vertex *node;
+ enum ospf_ti_lfa_node_type type;
+ struct in_addr nexthop;
+};
+
+struct ospf_ti_lfa_inner_backup_path_info {
+ struct ospf_ti_lfa_node_info p_node_info;
+ struct ospf_ti_lfa_node_info q_node_info;
+ struct mpls_label_stack *label_stack;
+};
+
+struct protected_resource {
+ enum protection_type type;
+
+ /* Link Protection */
+ struct router_lsa_link *link;
+
+ /* Node Protection */
+ struct in_addr router_id;
+};
+
+PREDECL_RBTREE_UNIQ(q_spaces);
+struct q_space {
+ struct vertex *root;
+ struct list *vertex_list;
+ struct mpls_label_stack *label_stack;
+ struct in_addr nexthop;
+ struct list *pc_path;
+ struct ospf_ti_lfa_node_info *p_node_info;
+ struct ospf_ti_lfa_node_info *q_node_info;
+ struct q_spaces_item q_spaces_item;
+};
+
+PREDECL_RBTREE_UNIQ(p_spaces);
+struct p_space {
+ struct vertex *root;
+ struct protected_resource *protected_resource;
+ struct q_spaces_head *q_spaces;
+ struct list *vertex_list;
+ struct vertex *pc_spf;
+ struct list *pc_vertex_list;
+ struct p_spaces_item p_spaces_item;
+};
+
+/* OSPF area structure. */
+struct ospf_area {
+ /* OSPF instance. */
+ struct ospf *ospf;
+
+ /* Zebra interface list belonging to the area. */
+ struct list *oiflist;
+
+ /* Area ID. */
+ struct in_addr area_id;
+
+ /* Area ID format. */
+ int area_id_fmt;
+#define OSPF_AREA_ID_FMT_DOTTEDQUAD 1
+#define OSPF_AREA_ID_FMT_DECIMAL 2
+
+ /* Address range. */
+ struct list *address_range;
+
+ /* Configured variables. */
+ int external_routing; /* ExternalRoutingCapability. */
+ int no_summary; /* Don't inject summaries into stub.*/
+ int shortcut_configured; /* Area configured as shortcut. */
+#define OSPF_SHORTCUT_DEFAULT 0
+#define OSPF_SHORTCUT_ENABLE 1
+#define OSPF_SHORTCUT_DISABLE 2
+ int shortcut_capability; /* Other ABRs agree on S-bit */
+ uint32_t default_cost; /* StubDefaultCost. */
+ int auth_type; /* Authentication type. */
+ int suppress_fa; /* Suppress forwarding address in NSSA ABR */
+
+ uint8_t NSSATranslatorRole; /* NSSA configured role */
+#define OSPF_NSSA_ROLE_NEVER 0
+#define OSPF_NSSA_ROLE_CANDIDATE 1
+#define OSPF_NSSA_ROLE_ALWAYS 2
+ uint8_t NSSATranslatorState; /* NSSA operational role */
+#define OSPF_NSSA_TRANSLATE_DISABLED 0
+#define OSPF_NSSA_TRANSLATE_ENABLED 1
+ int NSSATranslatorStabilityInterval;
+
+ uint8_t transit; /* TransitCapability. */
+#define OSPF_TRANSIT_FALSE 0
+#define OSPF_TRANSIT_TRUE 1
+ struct route_table *ranges; /* Configured Area Ranges. */
+ struct route_table *nssa_ranges; /* Configured NSSA Area Ranges. */
+
+ /* RFC3137 stub router state flags for area */
+ uint8_t stub_router_state;
+#define OSPF_AREA_ADMIN_STUB_ROUTED (1 << 0) /* admin stub-router set */
+#define OSPF_AREA_IS_STUB_ROUTED (1 << 1) /* stub-router active */
+#define OSPF_AREA_WAS_START_STUB_ROUTED (1 << 2) /* startup SR was done */
+ /* Area related LSDBs[Type1-4]. */
+ struct ospf_lsdb *lsdb;
+
+ /* Self-originated LSAs. */
+ struct ospf_lsa *router_lsa_self;
+ struct list *opaque_lsa_self; /* Type-10 Opaque-LSAs */
+
+ /* Area announce list. */
+ struct {
+ char *name;
+ struct access_list *list;
+ } _export;
+#define EXPORT_NAME(A) (A)->_export.name
+#define EXPORT_LIST(A) (A)->_export.list
+
+ /* Area acceptance list. */
+ struct {
+ char *name;
+ struct access_list *list;
+ } import;
+#define IMPORT_NAME(A) (A)->import.name
+#define IMPORT_LIST(A) (A)->import.list
+
+ /* Type 3 LSA Area prefix-list. */
+ struct {
+ char *name;
+ struct prefix_list *list;
+ } plist_in;
+#define PREFIX_LIST_IN(A) (A)->plist_in.list
+#define PREFIX_NAME_IN(A) (A)->plist_in.name
+
+ struct {
+ char *name;
+ struct prefix_list *list;
+ } plist_out;
+#define PREFIX_LIST_OUT(A) (A)->plist_out.list
+#define PREFIX_NAME_OUT(A) (A)->plist_out.name
+
+ /* NSSA default-information-originate */
+ struct {
+ bool enabled;
+ int metric_type;
+ int metric_value;
+ } nssa_default_originate;
+
+ /* Shortest Path Tree. */
+ struct vertex *spf;
+ struct list *spf_vertex_list;
+
+ bool spf_dry_run; /* flag for checking if the SPF calculation is
+ intended for the local RIB */
+ bool spf_root_node; /* flag for checking if the calculating node is the
+ root node of the SPF tree */
+
+ /* TI-LFA protected link for SPF calculations */
+ struct protected_resource *spf_protected_resource;
+
+ /* P/Q spaces for TI-LFA */
+ struct p_spaces_head *p_spaces;
+
+ /* Threads. */
+ struct event *t_stub_router; /* Stub-router timer */
+ struct event *t_opaque_lsa_self; /* Type-10 Opaque-LSAs origin. */
+
+ /* Statistics field. */
+ uint32_t spf_calculation; /* SPF Calculation Count. */
+
+ /* reverse SPF (used for TI-LFA Q spaces) */
+ bool spf_reversed;
+
+ /* Time stamps. */
+ struct timeval ts_spf; /* SPF calculation time stamp. */
+
+ /* Router count. */
+ uint32_t abr_count; /* ABR router in this area. */
+ uint32_t asbr_count; /* ASBR router in this area. */
+
+ /* Counters. */
+ uint32_t act_ints; /* Active interfaces. */
+ uint32_t full_nbrs; /* Fully adjacent neighbors. */
+ uint32_t full_vls; /* Fully adjacent virtual neighbors. */
+
+ struct ospf_area_fr_info fr_info; /* Flood reduction info. */
+};
+
+/* OSPF config network structure. */
+struct ospf_network {
+ /* Area ID. */
+ struct in_addr area_id;
+ int area_id_fmt;
+};
+
+/* OSPF NBMA neighbor structure. */
+struct ospf_nbr_nbma {
+ /* Neighbor IP address. */
+ struct in_addr addr;
+
+ /* OSPF interface. */
+ struct ospf_interface *oi;
+
+ /* OSPF neighbor structure. */
+ struct ospf_neighbor *nbr;
+
+ /* Neighbor priority. */
+ uint8_t priority;
+
+ /* Poll timer value. */
+ uint32_t v_poll;
+
+ /* Poll timer thread. */
+ struct event *t_poll;
+
+ /* State change. */
+ uint32_t state_change;
+};
+
+/* Macro. */
+#define OSPF_AREA_SAME(X, Y) \
+ (memcmp((X->area_id), (Y->area_id), IPV4_MAX_BYTELEN) == 0)
+
+#define IS_OSPF_ABR(O) ((O)->flags & OSPF_FLAG_ABR)
+#define IS_OSPF_ASBR(O) ((O)->flags & OSPF_FLAG_ASBR)
+
+#define OSPF_IS_AREA_ID_BACKBONE(I) ((I).s_addr == OSPF_AREA_BACKBONE)
+#define OSPF_IS_AREA_BACKBONE(A) OSPF_IS_AREA_ID_BACKBONE ((A)->area_id)
+
+#ifdef roundup
+# define ROUNDUP(val, gran) roundup(val, gran)
+#else /* roundup */
+# define ROUNDUP(val, gran) (((val) - 1 | (gran) - 1) + 1)
+#endif /* roundup */
+
+#define LSA_OPTIONS_GET(area) \
+ (((area)->external_routing == OSPF_AREA_DEFAULT) ? OSPF_OPTION_E : 0)
+#define LSA_OPTIONS_NSSA_GET(area) \
+ (((area)->external_routing == OSPF_AREA_NSSA) ? OSPF_OPTION_NP : 0)
+
+#define OSPF_TIMER_ON(T, F, V) event_add_timer(master, (F), ospf, (V), &(T))
+#define OSPF_AREA_TIMER_ON(T, F, V) \
+ event_add_timer(master, (F), area, (V), &(T))
+#define OSPF_POLL_TIMER_ON(T, F, V) \
+ event_add_timer(master, (F), nbr_nbma, (V), &(T))
+
+/* Extern variables. */
+extern struct ospf_master *om;
+extern unsigned short ospf_instance;
+extern const int ospf_redistributed_proto_max;
+extern struct zclient *zclient;
+extern struct event_loop *master;
+extern int ospf_zlog;
+extern struct zebra_privs_t ospfd_privs;
+
+/* Prototypes. */
+extern const char *ospf_redist_string(unsigned int route_type);
+extern struct ospf *ospf_lookup_instance(unsigned short instance);
+extern struct ospf *ospf_lookup(unsigned short instance, const char *name);
+extern struct ospf *ospf_get(unsigned short instance, const char *name,
+ bool *created);
+extern struct ospf *ospf_new_alloc(unsigned short instance, const char *name);
+extern struct ospf *ospf_lookup_by_inst_name(unsigned short instance,
+ const char *name);
+extern struct ospf *ospf_lookup_by_vrf_id(vrf_id_t vrf_id);
+extern uint32_t ospf_count_area_params(struct ospf *ospf);
+extern void ospf_finish(struct ospf *ospf);
+extern void ospf_process_refresh_data(struct ospf *ospf, bool reset);
+extern void ospf_router_id_update(struct ospf *ospf);
+extern void ospf_process_reset(struct ospf *ospf);
+extern void ospf_neighbor_reset(struct ospf *ospf, struct in_addr nbr_id,
+ const char *nbr_str);
+extern int ospf_network_set(struct ospf *ospf, struct prefix_ipv4 *p,
+ struct in_addr area_id, int df);
+extern int ospf_network_unset(struct ospf *ospf, struct prefix_ipv4 *p,
+ struct in_addr aread_id);
+extern int ospf_area_display_format_set(struct ospf *ospf,
+ struct ospf_area *area, int df);
+extern int ospf_area_stub_set(struct ospf *ospf, struct in_addr area_id);
+extern int ospf_area_stub_unset(struct ospf *ospf, struct in_addr area_id);
+extern int ospf_area_no_summary_set(struct ospf *ospf, struct in_addr area_id);
+extern int ospf_area_no_summary_unset(struct ospf *ospf,
+ struct in_addr area_id);
+extern int ospf_area_nssa_set(struct ospf *ospf, struct in_addr area_id);
+extern int ospf_area_nssa_unset(struct ospf *ospf, struct in_addr area_id);
+extern int ospf_area_nssa_suppress_fa_set(struct ospf *ospf,
+ struct in_addr area_id);
+extern int ospf_area_nssa_suppress_fa_unset(struct ospf *ospf,
+ struct in_addr area_id);
+extern int ospf_area_nssa_translator_role_set(struct ospf *ospf,
+ struct in_addr area_id, int role);
+extern void ospf_area_nssa_default_originate_set(struct ospf *ospf,
+ struct in_addr area_id,
+ int metric, int metric_type);
+extern void ospf_area_nssa_default_originate_unset(struct ospf *ospf,
+ struct in_addr area_id);
+extern int ospf_area_export_list_set(struct ospf *ospf,
+ struct ospf_area *area_id,
+ const char *list_name);
+extern int ospf_area_export_list_unset(struct ospf *ospf,
+ struct ospf_area *area_id);
+extern int ospf_area_import_list_set(struct ospf *ospf,
+ struct ospf_area *area_id,
+ const char *name);
+extern int ospf_area_import_list_unset(struct ospf *ospf,
+ struct ospf_area *area_id);
+extern int ospf_area_shortcut_set(struct ospf *ospf, struct ospf_area *area_id,
+ int mode);
+extern int ospf_area_shortcut_unset(struct ospf *ospf,
+ struct ospf_area *area_id);
+extern int ospf_timers_refresh_set(struct ospf *ospf, int interval);
+extern int ospf_timers_refresh_unset(struct ospf *ospf);
+void ospf_area_lsdb_discard_delete(struct ospf_area *area);
+extern int ospf_nbr_nbma_set(struct ospf *ospf, struct in_addr nbr_addr);
+extern int ospf_nbr_nbma_unset(struct ospf *ospf, struct in_addr nbr_addr);
+extern int ospf_nbr_nbma_priority_set(struct ospf *ospf,
+ struct in_addr nbr_addr,
+ uint8_t priority);
+extern int ospf_nbr_nbma_priority_unset(struct ospf *ospf,
+ struct in_addr nbr_addr);
+extern int ospf_nbr_nbma_poll_interval_set(struct ospf *ospf,
+ struct in_addr nbr_addr,
+ unsigned int interval);
+extern int ospf_nbr_nbma_poll_interval_unset(struct ospf *ospf,
+ struct in_addr addr);
+extern void ospf_if_update(struct ospf *ospf, struct interface *ifp);
+extern void ospf_ls_upd_queue_empty(struct ospf_interface *oi);
+extern void ospf_terminate(void);
+extern void ospf_nbr_nbma_if_update(struct ospf *ospf,
+ struct ospf_interface *oi);
+extern struct ospf_nbr_nbma *ospf_nbr_nbma_lookup(struct ospf *ospf,
+ struct in_addr nbr_addr);
+extern int ospf_oi_count(struct interface *ifp);
+
+extern struct ospf_area *ospf_area_new(struct ospf *ospf,
+ struct in_addr area_id);
+extern struct ospf_area *ospf_area_get(struct ospf *ospf,
+ struct in_addr area_id);
+extern void ospf_area_check_free(struct ospf *ospf, struct in_addr area_id);
+extern struct ospf_area *ospf_area_lookup_by_area_id(struct ospf *ospf,
+ struct in_addr area_id);
+extern void ospf_area_add_if(struct ospf_area *oa, struct ospf_interface *oi);
+extern void ospf_area_del_if(struct ospf_area *oa, struct ospf_interface *oi);
+
+extern void ospf_interface_area_set(struct ospf *ospf, struct interface *ifp);
+extern void ospf_interface_area_unset(struct ospf *ospf, struct interface *ifp);
+
+extern void ospf_route_map_init(void);
+
+extern void ospf_master_init(struct event_loop *master);
+extern void ospf_vrf_init(void);
+extern void ospf_vrf_terminate(void);
+extern void ospf_vrf_link(struct ospf *ospf, struct vrf *vrf);
+extern void ospf_vrf_unlink(struct ospf *ospf, struct vrf *vrf);
+const char *ospf_vrf_id_to_name(vrf_id_t vrf_id);
+int ospf_area_nssa_no_summary_set(struct ospf *ospf, struct in_addr area_id);
+
+const char *ospf_get_name(const struct ospf *ospf);
+extern struct ospf_interface *add_ospf_interface(struct connected *co,
+ struct ospf_area *area);
+/* Update socket bufsize(s), after config change */
+void ospf_update_bufsize(struct ospf *ospf, uint32_t recvsize,
+ uint32_t sendsize);
+
+extern int p_spaces_compare_func(const struct p_space *a,
+ const struct p_space *b);
+extern int q_spaces_compare_func(const struct q_space *a,
+ const struct q_space *b);
+
+#endif /* _ZEBRA_OSPFD_H */