/* * Copyright (C) 2001 Yasuhiro Ohara * * This file is part of GNU Zebra. * * GNU Zebra is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2, or (at your option) any * later version. * * GNU Zebra is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; see the file COPYING; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef OSPF6_ASBR_H #define OSPF6_ASBR_H /* for struct ospf6_prefix */ #include "ospf6_proto.h" /* for struct ospf6_lsa */ #include "ospf6_lsa.h" /* for struct ospf6_route */ #include "ospf6_route.h" /* Debug option */ extern unsigned char conf_debug_ospf6_asbr; #define OSPF6_DEBUG_ASBR_ON() (conf_debug_ospf6_asbr = 1) #define OSPF6_DEBUG_ASBR_OFF() (conf_debug_ospf6_asbr = 0) #define IS_OSPF6_DEBUG_ASBR (conf_debug_ospf6_asbr) struct ospf6_external_info { /* External route type */ int type; /* Originating Link State ID */ uint32_t id; struct in6_addr forwarding; route_tag_t tag; ifindex_t ifindex; }; /* OSPF6 ASBR Summarisation */ typedef enum { OSPF6_ROUTE_AGGR_NONE = 0, OSPF6_ROUTE_AGGR_ADD, OSPF6_ROUTE_AGGR_DEL, OSPF6_ROUTE_AGGR_MODIFY } ospf6_aggr_action_t; #define OSPF6_EXTERNAL_AGGRT_NO_ADVERTISE 0x1 #define OSPF6_EXTERNAL_AGGRT_ORIGINATED 0x2 #define OSPF6_EXTERNAL_RT_COUNT(aggr) \ (((struct ospf6_external_aggr_rt *)aggr)->match_extnl_hash->count) struct ospf6_external_aggr_rt { /* range address and masklen */ struct prefix p; /* use bits for OSPF6_EXTERNAL_AGGRT_NO_ADVERTISE and * OSPF6_EXTERNAL_AGGRT_ORIGINATED */ uint16_t aggrflags; /* To store external metric-type */ uint8_t mtype; /* Route tag for summary address */ route_tag_t tag; /* To store aggregated metric config */ int metric; /* To Store the LS ID when LSA is originated */ uint32_t id; /* Action to be done after delay timer expiry */ int action; /* OSPFv3 route generated by summary address. */ struct ospf6_route *route; /* Hash table of matching external routes */ struct hash *match_extnl_hash; }; /* AS-External-LSA */ #define OSPF6_AS_EXTERNAL_LSA_MIN_SIZE 4U /* w/o IPv6 prefix */ struct ospf6_as_external_lsa { uint32_t bits_metric; struct ospf6_prefix prefix; /* followed by none or one forwarding address */ /* followed by none or one external route tag */ /* followed by none or one referenced LS-ID */ }; #define OSPF6_ASBR_BIT_T ntohl (0x01000000) #define OSPF6_ASBR_BIT_F ntohl (0x02000000) #define OSPF6_ASBR_BIT_E ntohl (0x04000000) #define OSPF6_ASBR_METRIC(E) (ntohl ((E)->bits_metric & htonl (0x00ffffff))) #define OSPF6_ASBR_METRIC_SET(E, C) \ { \ (E)->bits_metric &= htonl(0xff000000); \ (E)->bits_metric |= htonl(0x00ffffff) & htonl(C); \ } extern void ospf6_asbr_lsa_add(struct ospf6_lsa *lsa); extern void ospf6_asbr_lsa_remove(struct ospf6_lsa *lsa, struct ospf6_route *asbr_entry); extern void ospf6_asbr_lsentry_add(struct ospf6_route *asbr_entry, struct ospf6 *ospf6); extern void ospf6_asbr_lsentry_remove(struct ospf6_route *asbr_entry, struct ospf6 *ospf6); extern int ospf6_asbr_is_asbr(struct ospf6 *o); extern void ospf6_asbr_redistribute_add(int type, ifindex_t ifindex, struct prefix *prefix, unsigned int nexthop_num, struct in6_addr *nexthop, route_tag_t tag, struct ospf6 *ospf6); extern void ospf6_asbr_redistribute_remove(int type, ifindex_t ifindex, struct prefix *prefix, struct ospf6 *ospf6); extern int ospf6_redistribute_config_write(struct vty *vty, struct ospf6 *ospf6); extern void ospf6_asbr_init(void); extern void ospf6_asbr_redistribute_disable(struct ospf6 *ospf6); extern void ospf6_asbr_redistribute_reset(struct ospf6 *ospf6); extern void ospf6_asbr_terminate(void); extern void ospf6_asbr_send_externals_to_area(struct ospf6_area *); extern void ospf6_asbr_remove_externals_from_area(struct ospf6_area *oa); extern int config_write_ospf6_debug_asbr(struct vty *vty); extern int ospf6_distribute_config_write(struct vty *vty, struct ospf6 *ospf6); extern void install_element_ospf6_debug_asbr(void); extern void ospf6_asbr_update_route_ecmp_path(struct ospf6_route *old, struct ospf6_route *route, struct ospf6 *ospf6); extern void ospf6_asbr_distribute_list_update(struct ospf6 *ospf6, struct ospf6_redist *red); struct ospf6_redist *ospf6_redist_lookup(struct ospf6 *ospf6, int type, unsigned short instance); extern void ospf6_asbr_routemap_update(const char *mapname); extern struct ospf6_lsa * ospf6_as_external_lsa_originate(struct ospf6_route *route, struct ospf6 *ospf6); extern void ospf6_asbr_status_update(struct ospf6 *ospf6, int status); int ospf6_asbr_external_rt_advertise(struct ospf6 *ospf6, struct prefix *p); int ospf6_external_aggr_delay_timer_set(struct ospf6 *ospf6, uint16_t interval); int ospf6_asbr_external_rt_no_advertise(struct ospf6 *ospf6, struct prefix *p); struct ospf6_external_aggr_rt * ospf6_external_aggr_config_lookup(struct ospf6 *ospf6, struct prefix *p); int ospf6_external_aggr_config_set(struct ospf6 *ospf6, struct prefix *p, route_tag_t tag, int metric, int mtype); int ospf6_external_aggr_config_unset(struct ospf6 *ospf6, struct prefix *p); void ospf6_handle_external_lsa_origination(struct ospf6 *ospf6, struct ospf6_route *rt, struct prefix *p); void ospf6_external_aggregator_free(struct ospf6_external_aggr_rt *aggr); void ospf6_unset_all_aggr_flag(struct ospf6 *ospf6); void ospf6_fill_aggr_route_details(struct ospf6 *ospf6, struct ospf6_external_aggr_rt *aggr); #endif /* OSPF6_ASBR_H */