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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2001 Yasuhiro Ohara
*/
#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,
const 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);
void ospf6_asbr_summary_config_delete(struct ospf6 *ospf6,
struct route_node *rn);
#endif /* OSPF6_ASBR_H */
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