ospf6d/ospf6_asbr.h

   1 /*
   2  * Copyright (C) 2001 Yasuhiro Ohara
   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 OSPF6_ASBR_H
  22 #define OSPF6_ASBR_H
  23
  24 /* for struct ospf6_prefix */
  25 #include "ospf6_proto.h"
  26 /* for struct ospf6_lsa */
  27 #include "ospf6_lsa.h"
  28 /* for struct ospf6_route */
  29 #include "ospf6_route.h"
  30
  31 /* Debug option */
  32 extern unsigned char conf_debug_ospf6_asbr;
  33 #define OSPF6_DEBUG_ASBR_ON() (conf_debug_ospf6_asbr = 1)
  34 #define OSPF6_DEBUG_ASBR_OFF() (conf_debug_ospf6_asbr = 0)
  35 #define IS_OSPF6_DEBUG_ASBR (conf_debug_ospf6_asbr)
  36
  37 struct ospf6_external_info {
  38         /* External route type */
  39         int type;
  40
  41         /* Originating Link State ID */
  42         uint32_t id;
  43
  44         struct in6_addr forwarding;
  45
  46         route_tag_t tag;
  47
  48         ifindex_t ifindex;
  49 };
  50
  51 /* AS-External-LSA */
  52 #define OSPF6_AS_EXTERNAL_LSA_MIN_SIZE         4U /* w/o IPv6 prefix */
  53 struct ospf6_as_external_lsa {
  54         uint32_t bits_metric;
  55
  56         struct ospf6_prefix prefix;
  57         /* followed by none or one forwarding address */
  58         /* followed by none or one external route tag */
  59         /* followed by none or one referenced LS-ID */
  60 };
  61
  62 #define OSPF6_ASBR_BIT_T  ntohl (0x01000000)
  63 #define OSPF6_ASBR_BIT_F  ntohl (0x02000000)
  64 #define OSPF6_ASBR_BIT_E  ntohl (0x04000000)
  65
  66 #define OSPF6_ASBR_METRIC(E) (ntohl ((E)->bits_metric & htonl (0x00ffffff)))
  67 #define OSPF6_ASBR_METRIC_SET(E, C)                                            \
  68         {                                                                      \
  69                 (E)->bits_metric &= htonl(0xff000000);                         \
  70                 (E)->bits_metric |= htonl(0x00ffffff) & htonl(C);              \
  71         }
  72
  73 extern void ospf6_asbr_lsa_add(struct ospf6_lsa *lsa);
  74 extern void ospf6_asbr_lsa_remove(struct ospf6_lsa *lsa,
  75                                   struct ospf6_route *asbr_entry);
  76 extern void ospf6_asbr_lsentry_add(struct ospf6_route *asbr_entry);
  77 extern void ospf6_asbr_lsentry_remove(struct ospf6_route *asbr_entry);
  78
  79 extern int ospf6_asbr_is_asbr(struct ospf6 *o);
  80 extern void ospf6_asbr_redistribute_add(int type, ifindex_t ifindex,
  81                                         struct prefix *prefix,
  82                                         unsigned int nexthop_num,
  83                                         struct in6_addr *nexthop,
  84                                         route_tag_t tag);
  85 extern void ospf6_asbr_redistribute_remove(int type, ifindex_t ifindex,
  86                                            struct prefix *prefix);
  87
  88 extern int ospf6_redistribute_config_write(struct vty *vty);
  89
  90 extern void ospf6_asbr_init(void);
  91 extern void ospf6_asbr_redistribute_reset(void);
  92 extern void ospf6_asbr_terminate(void);
  93 extern void ospf6_asbr_send_externals_to_area(struct ospf6_area *);
  94
  95 extern int config_write_ospf6_debug_asbr(struct vty *vty);
  96 extern void install_element_ospf6_debug_asbr(void);
  97 extern void ospf6_asbr_update_route_ecmp_path(struct ospf6_route *old,
  98                                               struct ospf6_route *route);
  99 extern void ospf6_asbr_distribute_list_update(int type);
 100
 101 #endif /* OSPF6_ASBR_H */