Initial revision

1 files changed, 251 insertions, 0 deletions

diff --git a/zebra/rib.h b/zebra/rib.h
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+++ b/zebra/rib.h
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+/*
+ * Routing Information Base header
+ * Copyright (C) 1997 Kunihiro Ishiguro
+ *
+ * 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_RIB_H
+#define _ZEBRA_RIB_H
+
+#define DISTANCE_INFINITY  255
+
+/* Routing information base. */
+struct rib
+{
+  /* Link list. */
+  struct rib *next;
+  struct rib *prev;
+
+  /* Type fo this route. */
+  int type;
+
+  /* Which routing table */
+  int table;			
+
+  /* Distance. */
+  u_char distance;
+
+  /* Flags of this route.  This flag's definition is in lib/zebra.h
+     ZEBRA_FLAG_* */
+  u_char flags;
+
+  /* Metric */
+  u_int32_t metric;
+
+  /* Uptime. */
+  time_t uptime;
+
+  /* Refrence count. */
+  unsigned long refcnt;
+
+  /* Nexthop information. */
+  u_char nexthop_num;
+  u_char nexthop_active_num;
+  u_char nexthop_fib_num;
+
+  struct nexthop *nexthop;
+};
+
+/* Static route information. */
+struct static_ipv4
+{
+  /* For linked list. */
+  struct static_ipv4 *prev;
+  struct static_ipv4 *next;
+
+  /* Administrative distance. */
+  u_char distance;
+
+  /* Flag for this static route's type. */
+  u_char type;
+#define STATIC_IPV4_GATEWAY     1
+#define STATIC_IPV4_IFNAME      2
+#define STATIC_IPV4_BLACKHOLE   3
+
+  /* Nexthop value. */
+  union 
+  {
+    struct in_addr ipv4;
+    char *ifname;
+  } gate;
+};
+
+#ifdef HAVE_IPV6
+/* Static route information. */
+struct static_ipv6
+{
+  /* For linked list. */
+  struct static_ipv6 *prev;
+  struct static_ipv6 *next;
+
+  /* Administrative distance. */
+  u_char distance;
+
+  /* Flag for this static route's type. */
+  u_char type;
+#define STATIC_IPV6_GATEWAY          1
+#define STATIC_IPV6_GATEWAY_IFNAME   2
+#define STATIC_IPV6_IFNAME           3
+
+  /* Nexthop value. */
+  struct in6_addr ipv6;
+  char *ifname;
+};
+#endif /* HAVE_IPV6 */
+
+/* Nexthop structure. */
+struct nexthop
+{
+  struct nexthop *next;
+  struct nexthop *prev;
+
+  u_char type;
+#define NEXTHOP_TYPE_IFINDEX        1 /* Directly connected.  */
+#define NEXTHOP_TYPE_IFNAME         2 /* Interface route.  */
+#define NEXTHOP_TYPE_IPV4           3 /* IPv4 nexthop.  */
+#define NEXTHOP_TYPE_IPV4_IFINDEX   4 /* IPv4 nexthop with ifindex.  */
+#define NEXTHOP_TYPE_IPV4_IFNAME    5 /* IPv4 nexthop with ifname.  */
+#define NEXTHOP_TYPE_IPV6           6 /* IPv6 nexthop.  */
+#define NEXTHOP_TYPE_IPV6_IFINDEX   7 /* IPv6 nexthop with ifindex.  */
+#define NEXTHOP_TYPE_IPV6_IFNAME    8 /* IPv6 nexthop with ifname.  */
+#define NEXTHOP_TYPE_BLACKHOLE      9 /* Null0 nexthop.  */
+
+  u_char flags;
+#define NEXTHOP_FLAG_ACTIVE     (1 << 0) /* This nexthop is alive. */
+#define NEXTHOP_FLAG_FIB        (1 << 1) /* FIB nexthop. */
+#define NEXTHOP_FLAG_RECURSIVE  (1 << 2) /* Recursive nexthop. */
+
+  /* Interface index. */
+  unsigned int ifindex;
+  char *ifname;
+
+  /* Nexthop address or interface name. */
+  union
+  {
+    struct in_addr ipv4;
+#ifdef HAVE_IPV6
+    struct in6_addr ipv6;
+#endif /* HAVE_IPV6*/
+  } gate;
+
+  /* Recursive lookup nexthop. */
+  u_char rtype;
+  unsigned int rifindex;
+  union
+  {
+    struct in_addr ipv4;
+#ifdef HAVE_IPV6
+    struct in6_addr ipv6;
+#endif /* HAVE_IPV6 */
+  } rgate;
+
+  struct nexthop *indirect;
+};
+
+/* Routing table instance.  */
+struct vrf
+{
+  /* Identifier.  This is same as routing table vector index.  */
+  u_int32_t id;
+
+  /* Routing table name.  */
+  char *name;
+
+  /* Description.  */
+  char *desc;
+
+  /* FIB identifier.  */
+  u_char fib_id;
+
+  /* Routing table.  */
+  struct route_table *table[AFI_MAX][SAFI_MAX];
+
+  /* Static route configuration.  */
+  struct route_table *stable[AFI_MAX][SAFI_MAX];
+};
+
+struct nexthop *nexthop_ifindex_add (struct rib *, unsigned int);
+struct nexthop *nexthop_ifname_add (struct rib *, char *);
+struct nexthop *nexthop_blackhole_add (struct rib *);
+struct nexthop *nexthop_ipv4_add (struct rib *, struct in_addr *);
+#ifdef HAVE_IPV6
+struct nexthop *nexthop_ipv6_add (struct rib *, struct in6_addr *);
+#endif /* HAVE_IPV6 */
+
+struct vrf *vrf_lookup (u_int32_t);
+struct route_table *vrf_table (afi_t afi, safi_t safi, u_int32_t id);
+struct route_table *vrf_static_table (afi_t afi, safi_t safi, u_int32_t id);
+
+int
+rib_add_ipv4 (int type, int flags, struct prefix_ipv4 *p, 
+	      struct in_addr *gate, unsigned int ifindex, u_int32_t vrf_id,
+	      u_int32_t, u_char);
+
+int
+rib_add_ipv4_multipath (struct prefix_ipv4 *, struct rib *);
+
+int
+rib_delete_ipv4 (int type, int flags, struct prefix_ipv4 *p,
+		 struct in_addr *gate, unsigned int ifindex, u_int32_t);
+
+struct rib *
+rib_match_ipv4 (struct in_addr);
+
+struct rib *
+rib_lookup_ipv4 (struct prefix_ipv4 *);
+
+void rib_update ();
+void rib_sweep_route ();
+void rib_close ();
+void rib_init ();
+
+int
+static_add_ipv4 (struct prefix *p, struct in_addr *gate, char *ifname,
+		 u_char distance, u_int32_t vrf_id);
+
+int
+static_delete_ipv4 (struct prefix *p, struct in_addr *gate, char *ifname,
+		    u_char distance, u_int32_t vrf_id);
+
+#ifdef HAVE_IPV6
+int
+rib_add_ipv6 (int type, int flags, struct prefix_ipv6 *p,
+	      struct in6_addr *gate, unsigned int ifindex, u_int32_t vrf_id);
+
+int
+rib_delete_ipv6 (int type, int flags, struct prefix_ipv6 *p,
+		 struct in6_addr *gate, unsigned int ifindex, u_int32_t vrf_id);
+
+struct rib *rib_lookup_ipv6 (struct in6_addr *);
+
+struct rib *rib_match_ipv6 (struct in6_addr *);
+
+extern struct route_table *rib_table_ipv6;
+
+int
+static_add_ipv6 (struct prefix *p, u_char type, struct in6_addr *gate,
+		 char *ifname, u_char distance, u_int32_t vrf_id);
+
+int
+static_delete_ipv6 (struct prefix *p, u_char type, struct in6_addr *gate,
+		    char *ifname, u_char distance, u_int32_t vrf_id);
+
+#endif /* HAVE_IPV6 */
+
+#endif /*_ZEBRA_RIB_H */