2 * Nexthop structure definition.
3 * Copyright (C) 1997, 98, 99, 2001 Kunihiro Ishiguro
4 * Copyright (C) 2013 Cumulus Networks, Inc.
6 * This file is part of Quagga.
8 * Quagga is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2, or (at your option) any
13 * Quagga is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with Quagga; see the file COPYING. If not, write to the Free
20 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
24 #ifndef _LIB_NEXTHOP_H
25 #define _LIB_NEXTHOP_H
36 NEXTHOP_TYPE_IFINDEX
= 1, /* Directly connected. */
37 NEXTHOP_TYPE_IPV4
, /* IPv4 nexthop. */
38 NEXTHOP_TYPE_IPV4_IFINDEX
, /* IPv4 nexthop with ifindex. */
39 NEXTHOP_TYPE_IPV6
, /* IPv6 nexthop. */
40 NEXTHOP_TYPE_IPV6_IFINDEX
, /* IPv6 nexthop with ifindex. */
41 NEXTHOP_TYPE_BLACKHOLE
, /* Null0 nexthop. */
44 /* Nexthop structure. */
50 /* Interface index. */
53 enum nexthop_types_t type
;
56 #define NEXTHOP_FLAG_ACTIVE (1 << 0) /* This nexthop is alive. */
57 #define NEXTHOP_FLAG_FIB (1 << 1) /* FIB nexthop. */
58 #define NEXTHOP_FLAG_RECURSIVE (1 << 2) /* Recursive nexthop. */
59 #define NEXTHOP_FLAG_ONLINK (1 << 3) /* Nexthop should be installed onlink. */
60 #define NEXTHOP_FLAG_MATCHED (1 << 4) /* Already matched vs a nexthop */
61 #define NEXTHOP_FLAG_FILTERED (1 << 5) /* rmap filtered, used by static only */
66 union g_addr rmap_src
; /* Src is set via routemap */
68 /* Nexthops obtained by recursive resolution.
70 * If the nexthop struct needs to be resolved recursively,
71 * NEXTHOP_FLAG_RECURSIVE will be set in flags and the nexthops
72 * obtained by recursive resolution will be added to `resolved'.
73 * Only one level of recursive resolution is currently supported. */
74 struct nexthop
*resolved
;
77 extern int zebra_rnh_ip_default_route
;
78 extern int zebra_rnh_ipv6_default_route
;
81 nh_resolve_via_default(int family
)
83 if (((family
== AF_INET
) && zebra_rnh_ip_default_route
) ||
84 ((family
== AF_INET6
) && zebra_rnh_ipv6_default_route
))
90 struct nexthop
*nexthop_new (void);
91 void nexthop_add (struct nexthop
**target
, struct nexthop
*nexthop
);
93 void copy_nexthops (struct nexthop
**tnh
, struct nexthop
*nh
);
94 void nexthop_free (struct nexthop
*nexthop
);
95 void nexthops_free (struct nexthop
*nexthop
);
97 extern const char *nexthop_type_to_str (enum nexthop_types_t nh_type
);
98 extern int nexthop_same_no_recurse (struct nexthop
*next1
, struct nexthop
*next2
);
100 #endif /*_LIB_NEXTHOP_H */