1 /* RIPng nexthop support
2 * Copyright (C) 6WIND Vincent Jardin <vincent.jardin@6wind.com>
3 *
4 * This file is part of GNU Zebra.
5 *
6 * GNU Zebra is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
9 * later version.
10 *
11 * GNU Zebra is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with this program; see the file COPYING; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #ifndef _ZEBRA_RIPNG_RIPNG_NEXTHOP_H
22 #define _ZEBRA_RIPNG_RIPNG_NEXTHOP_H
23
24 #include <zebra.h>
25 #include "linklist.h"
26 #include "ripngd/ripng_route.h"
27 #include "ripngd/ripngd.h"
28
29 extern struct list *ripng_rte_new(void);
30 extern void ripng_rte_free(struct list *ripng_rte_list);
31 extern void ripng_rte_add(struct list *ripng_rte_list, struct prefix_ipv6 *p,
32 struct ripng_info *rinfo,
33 struct ripng_aggregate *aggregate);
34 extern void ripng_rte_send(struct list *ripng_rte_list, struct interface *ifp,
35 struct sockaddr_in6 *to);
36
37 /***
38 * 1 if A > B
39 * 0 if A = B
40 * -1 if A < B
41 **/
addr6_cmp(struct in6_addr * A,struct in6_addr * B)42 static inline int addr6_cmp(struct in6_addr *A, struct in6_addr *B)
43 {
44 #define a(i) A->s6_addr32[i]
45 #define b(i) B->s6_addr32[i]
46
47 if (a(3) > b(3))
48 return 1;
49 else if ((a(3) == b(3)) && (a(2) > b(2)))
50 return 1;
51 else if ((a(3) == b(3)) && (a(2) == b(2)) && (a(1) > b(1)))
52 return 1;
53 else if ((a(3) == b(3)) && (a(2) == b(2)) && (a(1) == b(1))
54 && (a(0) > b(0)))
55 return 1;
56
57 if ((a(3) == b(3)) && (a(2) == b(2)) && (a(1) == b(1))
58 && (a(0) == b(0)))
59 return 0;
60
61 return -1;
62 }
63
64 #endif /* _ZEBRA_RIPNG_RIPNG_NEXTHOP_H */
65