/* * 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; /* bit flags */ u_char flags; /* see ZEBRA_FLAG_REJECT ZEBRA_FLAG_BLACKHOLE */ }; #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; /* bit flags */ u_char flags; /* see ZEBRA_FLAG_REJECT ZEBRA_FLAG_BLACKHOLE */ }; #endif /* HAVE_IPV6 */ enum nexthop_types_t { NEXTHOP_TYPE_IFINDEX = 1, /* Directly connected. */ NEXTHOP_TYPE_IFNAME, /* Interface route. */ NEXTHOP_TYPE_IPV4, /* IPv4 nexthop. */ NEXTHOP_TYPE_IPV4_IFINDEX, /* IPv4 nexthop with ifindex. */ NEXTHOP_TYPE_IPV4_IFNAME, /* IPv4 nexthop with ifname. */ NEXTHOP_TYPE_IPV6, /* IPv6 nexthop. */ NEXTHOP_TYPE_IPV6_IFINDEX, /* IPv6 nexthop with ifindex. */ NEXTHOP_TYPE_IPV6_IFNAME, /* IPv6 nexthop with ifname. */ NEXTHOP_TYPE_BLACKHOLE, /* Null0 nexthop. */ }; /* Nexthop structure. */ struct nexthop { struct nexthop *next; struct nexthop *prev; enum nexthop_types_t type; 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, const char *ifname, u_char flags, u_char distance, u_int32_t vrf_id); int static_delete_ipv4 (struct prefix *p, struct in_addr *gate, const 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, const char *ifname, u_char flags, u_char distance, u_int32_t vrf_id); int static_delete_ipv6 (struct prefix *p, u_char type, struct in6_addr *gate, const char *ifname, u_char distance, u_int32_t vrf_id); #endif /* HAVE_IPV6 */ #endif /*_ZEBRA_RIB_H */