Initial revision
diff --git a/ospfd/ospf_abr.h b/ospfd/ospf_abr.h
new file mode 100644
index 0000000..3b385c3
--- /dev/null
+++ b/ospfd/ospf_abr.h
@@ -0,0 +1,84 @@
+/*
+ * OSPF ABR functions.
+ * Copyright (C) 1999 Alex Zinin
+ *
+ * This file is part of GNU Zebra.
+ *
+ * GNU Zebra is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * GNU Zebra is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Zebra; see the file COPYING. If not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+
+#ifndef _ZEBRA_OSPF_ABR_H
+#define _ZEBRA_OSPF_ABR_H
+
+#define OSPF_ABR_TASK_DELAY 7
+
+#define OSPF_AREA_RANGE_ADVERTISE (1 << 0)
+#define OSPF_AREA_RANGE_SUBSTITUTE (1 << 1)
+
+/* Area range. */
+struct ospf_area_range
+{
+ /* Area range address. */
+ struct in_addr addr;
+
+ /* Area range masklen. */
+ u_char masklen;
+
+ /* Flags. */
+ u_char flags;
+
+ /* Number of more specific prefixes. */
+ int specifics;
+
+ /* Addr and masklen to substitute. */
+ struct in_addr subst_addr;
+ u_char subst_masklen;
+
+ /* Range cost. */
+ u_int32_t cost;
+
+ /* Configured range cost. */
+ u_int32_t cost_config;
+#define OSPF_AREA_RANGE_COST_UNSPEC -1
+};
+
+/* Prototypes. */
+struct ospf_area_range *ospf_area_range_lookup (struct ospf_area *,
+ struct prefix_ipv4 *);
+struct ospf_area_range *ospf_some_area_range_match (struct prefix_ipv4 *);
+struct ospf_area_range *ospf_area_range_lookup_next (struct ospf_area *,
+ struct in_addr *, int);
+int ospf_area_range_set (struct ospf *, struct in_addr, struct prefix_ipv4 *,
+ int);
+int ospf_area_range_cost_set (struct ospf *, struct in_addr,
+ struct prefix_ipv4 *, u_int32_t);
+int ospf_area_range_unset (struct ospf *, struct in_addr,
+ struct prefix_ipv4 *);
+int ospf_area_range_substitute_set (struct ospf *, struct in_addr,
+ struct prefix_ipv4 *,
+ struct prefix_ipv4 *);
+int ospf_area_range_substitute_unset (struct ospf *, struct in_addr,
+ struct prefix_ipv4 *);
+struct ospf_area_range *ospf_area_range_match_any (struct ospf *,
+ struct prefix_ipv4 *);
+int ospf_area_range_active (struct ospf_area_range *);
+int ospf_act_bb_connection ();
+
+void ospf_check_abr_status ();
+void ospf_abr_task ();
+void ospf_schedule_abr_task ();
+
+#endif /* _ZEBRA_OSPF_ABR_H */