From 718e3744195351130f4ce7dbe0613f4b3e23df93 Mon Sep 17 00:00:00 2001
From: paul <paul>
Date: Fri, 13 Dec 2002 20:15:29 +0000
Subject: Initial revision

---
 ospfd/ospf_route.h | 165 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 165 insertions(+)
 create mode 100644 ospfd/ospf_route.h

(limited to 'ospfd/ospf_route.h')

diff --git a/ospfd/ospf_route.h b/ospfd/ospf_route.h
new file mode 100644
index 00000000..81f59c48
--- /dev/null
+++ b/ospfd/ospf_route.h
@@ -0,0 +1,165 @@
+/*
+ * OSPF routing table.
+ * Copyright (C) 1999, 2000 Toshiaki Takada
+ *
+ * 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_ROUTE_H
+#define _ZEBRA_OSPF_ROUTE_H
+
+#define OSPF_DESTINATION_ROUTER		1
+#define OSPF_DESTINATION_NETWORK	2
+#define OSPF_DESTINATION_DISCARD	3
+
+#define OSPF_PATH_MIN			0
+#define OSPF_PATH_INTRA_AREA		1
+#define OSPF_PATH_INTER_AREA		2
+#define OSPF_PATH_TYPE1_EXTERNAL	3
+#define OSPF_PATH_TYPE2_EXTERNAL	4
+#define OSPF_PATH_MAX			5
+
+/* OSPF Path. */
+struct ospf_path
+{
+  struct in_addr nexthop;
+  struct in_addr adv_router;
+  struct ospf_interface *oi;
+};
+
+/* Below is the structure linked to every
+   route node. Note that for Network routing
+   entries a single ospf_route is kept, while
+   for ABRs and ASBRs (Router routing entries),
+   we link an instance of ospf_router_route
+   where a list of paths is maintained, so
+
+   nr->info is a (struct ospf_route *) for OSPF_DESTINATION_NETWORK
+   but
+   nr->info is a (struct ospf_router_route *) for OSPF_DESTINATION_ROUTER
+*/
+
+struct route_standard
+{
+  /* Link Sate Origin. */
+  struct lsa_header *origin;
+
+  /* Associated Area. */
+  struct in_addr area_id;	/* The area the route belongs to */
+
+#ifdef HAVE_NSSA
+  /*  Area Type */
+  int external_routing;
+#endif /* HAVE_NSSA */
+
+  /* Optional Capability. */
+  u_char options;		/* Get from LSA header. */
+
+  /*  */
+  u_char flags; 		/* From router-LSA */
+};
+
+struct route_external
+{
+  /* Link State Origin. */
+  struct ospf_lsa *origin;
+
+  /* Link State Cost Type2. */
+  u_int32_t type2_cost;
+
+  /* Tag value. */
+  u_int32_t tag;
+
+  /* ASBR route. */
+  struct ospf_route *asbr;
+};
+
+struct ospf_route
+{
+  /* Create time. */
+  time_t ctime;
+
+  /* Modified time. */
+  time_t mtime;
+
+  /* Destination Type. */
+  u_char type;
+
+  /* Destination ID. */		/* i.e. Link State ID. */
+  struct in_addr id;
+
+  /* Address Mask. */
+  struct in_addr mask;		/* Only valid for networks. */
+
+  /* Path Type. */
+  u_char path_type;
+
+  /* List of Paths. */
+  list path;
+
+  /* Link State Cost. */
+  u_int32_t cost;		/* i.e. metric. */
+
+  /* Route specific info. */
+  union
+  {
+    struct route_standard std;
+    struct route_external ext;
+  } u;
+};
+
+struct ospf_path *ospf_path_new ();
+void ospf_path_free (struct ospf_path *op);
+struct ospf_path *ospf_path_lookup (list, struct ospf_path *);
+struct ospf_route *ospf_route_new ();
+void ospf_route_free (struct ospf_route *or);
+void ospf_route_delete (struct route_table *rt);
+void ospf_route_table_free (struct route_table *rt);
+
+void ospf_route_install (struct route_table *);
+void ospf_route_table_dump (struct route_table *);
+
+void ospf_intra_add_router (struct route_table *, struct vertex *,
+			    struct ospf_area *);
+
+void ospf_intra_add_transit (struct route_table *, struct vertex *,
+			     struct ospf_area *);
+
+void ospf_intra_add_stub (struct route_table *, struct router_lsa_link *,
+ 		          struct vertex *, struct ospf_area *);
+
+int ospf_route_cmp (struct ospf_route *, struct ospf_route *);
+void ospf_route_copy_nexthops (struct ospf_route *, list);
+void ospf_route_copy_nexthops_from_vertex (struct ospf_route *,
+					   struct vertex * );
+
+void ospf_route_subst (struct route_node *, struct ospf_route *,
+		       struct ospf_route *);
+void ospf_route_add (struct route_table *, struct prefix_ipv4 *,
+		     struct ospf_route *, struct ospf_route *);
+
+void ospf_route_subst_nexthops (struct ospf_route *, list);
+void ospf_prune_unreachable_networks (struct route_table *);
+void ospf_prune_unreachable_routers (struct route_table *);
+int ospf_add_discard_route (struct route_table *, struct ospf_area *, 
+			    struct prefix_ipv4 *);
+void ospf_delete_discard_route (struct prefix_ipv4 *);
+int ospf_route_match_same (struct route_table *, struct prefix_ipv4 *,
+			   struct ospf_route *);
+
+#endif /* _ZEBRA_OSPF_ROUTE_H */
-- 
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