1 files changed, 96 insertions, 0 deletions
diff --git a/ospfd/ospf_abr.h b/ospfd/ospf_abr.h
new file mode 100644
index 0000000..cc2b2b0
--- /dev/null
+++ b/ospfd/ospf_abr.h
@@ -0,0 +1,96 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * OSPF ABR functions.
+ * Copyright (C) 1999 Alex Zinin
+ */
+
+#ifndef _ZEBRA_OSPF_ABR_H
+#define _ZEBRA_OSPF_ABR_H
+
+#define OSPF_ABR_TASK_DELAY 	5
+#define OSPF_ABR_DNA_TIMER 10
+/* Delay in announceing Non-DNA routers
+ * so that LSAs are completely synced
+ * before generating indication LSAs.
+ */
+
+#define OSPF_AREA_RANGE_ADVERTISE	(1 << 0)
+#define OSPF_AREA_RANGE_SUBSTITUTE	(1 << 1)
+#define OSPF_AREA_RANGE_NSSA		(1 << 2)
+
+/* Area range. */
+struct ospf_area_range {
+	/* Area range address. */
+	struct in_addr addr;
+
+	/* Area range masklen. */
+	uint8_t masklen;
+
+	/* Flags. */
+	uint8_t flags;
+
+	/* Number of more specific prefixes. */
+	int specifics;
+
+	/* Addr and masklen to substitute. */
+	struct in_addr subst_addr;
+	uint8_t subst_masklen;
+
+	/* Range cost. */
+	uint32_t cost;
+
+	/* Configured range cost. */
+	uint32_t cost_config;
+};
+
+/* Prototypes. */
+extern struct ospf_area_range *ospf_area_range_lookup(struct ospf_area *,
+						      struct route_table *,
+						      struct prefix_ipv4 *);
+extern struct ospf_area_range *
+ospf_area_range_lookup_next(struct ospf_area *, struct in_addr *, int);
+
+extern int ospf_area_range_set(struct ospf *, struct ospf_area *,
+			       struct route_table *, struct prefix_ipv4 *, int,
+			       bool);
+extern int ospf_area_range_cost_set(struct ospf *, struct ospf_area *,
+				    struct route_table *, struct prefix_ipv4 *,
+				    uint32_t);
+extern int ospf_area_range_unset(struct ospf *, struct ospf_area *,
+				 struct route_table *, struct prefix_ipv4 *);
+extern int ospf_area_range_substitute_set(struct ospf *, struct ospf_area *,
+					  struct prefix_ipv4 *,
+					  struct prefix_ipv4 *);
+extern int ospf_area_range_substitute_unset(struct ospf *, struct ospf_area *,
+					    struct prefix_ipv4 *);
+extern struct ospf_area_range *ospf_area_range_match_any(struct ospf *,
+							 struct prefix_ipv4 *);
+extern int ospf_area_range_active(struct ospf_area_range *);
+extern int ospf_act_bb_connection(struct ospf *);
+
+extern void ospf_check_abr_status(struct ospf *);
+extern void ospf_abr_task(struct ospf *);
+extern void ospf_abr_nssa_task(struct ospf *ospf);
+extern void ospf_schedule_abr_task(struct ospf *);
+
+extern void ospf_abr_announce_network_to_area(struct prefix_ipv4 *, uint32_t,
+					      struct ospf_area *);
+extern void ospf_abr_nssa_type7_defaults(struct ospf *ospf);
+extern void ospf_abr_nssa_check_status(struct ospf *ospf);
+extern void ospf_abr_generate_indication_lsa(struct ospf *ospf,
+					     const struct ospf_area *area);
+extern void ospf_flush_indication_lsas(struct ospf *ospf);
+extern void ospf_generate_indication_lsa(struct ospf *ospf,
+					 struct ospf_area *area);
+extern bool ospf_check_fr_enabled_all(struct ospf *ospf);
+extern void ospf_recv_indication_lsa_flush(struct ospf_lsa *lsa);
+
+/** @brief Static inline functions.
+ *  @param Area pointer.
+ *  @return area Flood Reduction status.
+ */
+static inline bool ospf_check_area_fr_enabled(const struct ospf_area *area)
+{
+	return area->fr_info.enabled ? true : false;
+}
+#endif /* _ZEBRA_OSPF_ABR_H */