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
33 #endif /* HAVE_IPV6 */
38 NEXTHOP_TYPE_IFINDEX = 1, /* Directly connected. */
39 NEXTHOP_TYPE_IFNAME, /* Interface route. */
40 NEXTHOP_TYPE_IPV4, /* IPv4 nexthop. */
41 NEXTHOP_TYPE_IPV4_IFINDEX, /* IPv4 nexthop with ifindex. */
42 NEXTHOP_TYPE_IPV4_IFNAME, /* IPv4 nexthop with ifname. */
43 NEXTHOP_TYPE_IPV6, /* IPv6 nexthop. */
44 NEXTHOP_TYPE_IPV6_IFINDEX, /* IPv6 nexthop with ifindex. */
45 NEXTHOP_TYPE_IPV6_IFNAME, /* IPv6 nexthop with ifname. */
46 NEXTHOP_TYPE_BLACKHOLE, /* Null0 nexthop. */
49 /* Nexthop structure. */
55 /* Interface index. */
59 enum nexthop_types_t type;
62 #define NEXTHOP_FLAG_ACTIVE (1 << 0) /* This nexthop is alive. */
63 #define NEXTHOP_FLAG_FIB (1 << 1) /* FIB nexthop. */
64 #define NEXTHOP_FLAG_RECURSIVE (1 << 2) /* Recursive nexthop. */
65 #define NEXTHOP_FLAG_ONLINK (1 << 3) /* Nexthop should be installed onlink. */
66 #define NEXTHOP_FLAG_MATCHED (1 << 4) /* Already matched vs a nexthop */
72 /* Nexthops obtained by recursive resolution.
74 * If the nexthop struct needs to be resolved recursively,
75 * NEXTHOP_FLAG_RECURSIVE will be set in flags and the nexthops
76 * obtained by recursive resolution will be added to `resolved'.
77 * Only one level of recursive resolution is currently supported. */
78 struct nexthop *resolved;
81 struct nexthop *nexthop_new (void);
82 void nexthop_add (struct nexthop **target, struct nexthop *nexthop);
84 void copy_nexthops (struct nexthop **tnh, struct nexthop *nh);
85 void nexthop_free (struct nexthop *nexthop);
86 void nexthops_free (struct nexthop *nexthop);
88 extern const char *nexthop_type_to_str (enum nexthop_types_t nh_type);
89 extern int nexthop_same_no_recurse (struct nexthop *next1, struct nexthop *next2);
91 #endif /*_LIB_NEXTHOP_H */