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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* IS-IS Rout(e)ing protocol - isis_route.h
*
* Copyright (C) 2001,2002 Sampo Saaristo
* Tampere University of Technology
* Institute of Communications Engineering
*
* based on ../ospf6d/ospf6_route.[ch]
* by Yasuhiro Ohara
*/
#ifndef _ZEBRA_ISIS_ROUTE_H
#define _ZEBRA_ISIS_ROUTE_H
#include "lib/nexthop.h"
struct isis_nexthop {
ifindex_t ifindex;
int family;
union g_addr ip;
uint8_t sysid[ISIS_SYS_ID_LEN];
struct isis_sr_psid_info sr;
struct mpls_label_stack *label_stack;
};
struct isis_route_info {
#define ISIS_ROUTE_FLAG_ACTIVE 0x01 /* active route for the prefix */
#define ISIS_ROUTE_FLAG_ZEBRA_SYNCED 0x02 /* set when route synced to zebra */
#define ISIS_ROUTE_FLAG_ZEBRA_RESYNC 0x04 /* set when route needs to sync */
uint8_t flag;
uint32_t cost;
uint32_t depth;
struct isis_sr_psid_info sr_algo[SR_ALGORITHM_COUNT];
struct isis_sr_psid_info sr_algo_previous[SR_ALGORITHM_COUNT];
struct list *nexthops;
struct isis_route_info *backup;
};
struct isis_route_table_info {
uint8_t algorithm;
};
DECLARE_HOOK(isis_route_update_hook,
(struct isis_area * area, struct prefix *prefix,
struct isis_route_info *route_info),
(area, prefix, route_info));
void isis_nexthop_delete(struct isis_nexthop *nexthop);
void adjinfo2nexthop(int family, struct list *nexthops,
struct isis_adjacency *adj, struct isis_sr_psid_info *sr,
struct mpls_label_stack *label_stack);
struct isis_route_info *
isis_route_create(struct prefix *prefix, struct prefix_ipv6 *src_p,
uint32_t cost, uint32_t depth, struct isis_sr_psid_info *sr,
struct list *adjacencies, bool allow_ecmp,
struct isis_area *area, struct route_table *table);
void isis_route_delete(struct isis_area *area, struct route_node *rode,
struct route_table *table);
/* Walk the given table and install new routes to zebra and remove old ones.
* route status is tracked using ISIS_ROUTE_FLAG_ACTIVE */
void isis_route_verify_table(struct isis_area *area, struct route_table *table,
struct route_table *table_backup, int tree);
/* Same as isis_route_verify_table, but merge L1 and L2 routes before */
void isis_route_verify_merge(struct isis_area *area,
struct route_table *level1_table,
struct route_table *level1_table_backup,
struct route_table *level2_table,
struct route_table *level2_table_backup, int tree);
/* Unset ISIS_ROUTE_FLAG_ACTIVE on all routes. Used before running spf. */
void isis_route_invalidate_table(struct isis_area *area,
struct route_table *table);
/* Cleanup route node when freeing routing table. */
void isis_route_node_cleanup(struct route_table *table,
struct route_node *node);
void isis_route_switchover_nexthop(struct isis_area *area,
struct route_table *table, int family,
union g_addr *nexthop_addr,
ifindex_t ifindex);
struct isis_route_table_info *isis_route_table_info_alloc(uint8_t algorithm);
void isis_route_table_info_free(void *info);
uint8_t isis_route_table_algorithm(const struct route_table *table);
#endif /* _ZEBRA_ISIS_ROUTE_H */
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