Line data    Source code

       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             :  **/
      42           0 : 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           0 :         if (a(3) > b(3))
      48             :                 return 1;
      49           0 :         else if ((a(3) == b(3)) && (a(2) > b(2)))
      50             :                 return 1;
      51           0 :         else if ((a(3) == b(3)) && (a(2) == b(2)) && (a(1) > b(1)))
      52             :                 return 1;
      53           0 :         else if ((a(3) == b(3)) && (a(2) == b(2)) && (a(1) == b(1))
      54           0 :                  && (a(0) > b(0)))
      55             :                 return 1;
      56             : 
      57           0 :         if ((a(3) == b(3)) && (a(2) == b(2)) && (a(1) == b(1))
      58           0 :             && (a(0) == b(0)))
      59           0 :                 return 0;
      60             : 
      61             :         return -1;
      62             : }
      63             : 
      64             : #endif /* _ZEBRA_RIPNG_RIPNG_NEXTHOP_H */