[mirror_frr.git] / isisd / isis_route.h

// 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;
	struct isis_sr_psid_info sr_previous;
	struct list *nexthops;
	struct isis_route_info *backup;
};

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);

/* 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);

/* 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);

#endif /* _ZEBRA_ISIS_ROUTE_H */
Commit	Line	Data
	1	// SPDX-License-Identifier: GPL-2.0-or-later
	2	/*
	3	* IS-IS Rout(e)ing protocol - isis_route.h
	4	*
	5	* Copyright (C) 2001,2002 Sampo Saaristo
	6	* Tampere University of Technology
	7	* Institute of Communications Engineering
	8	*
	9	* based on ../ospf6d/ospf6_route.[ch]
	10	* by Yasuhiro Ohara
	11	*/
	12	#ifndef _ZEBRA_ISIS_ROUTE_H
	13	#define _ZEBRA_ISIS_ROUTE_H
	14
	15	#include "lib/nexthop.h"
	16
	17	struct isis_nexthop {
	18	ifindex_t ifindex;
	19	int family;
	20	union g_addr ip;
	21	uint8_t sysid[ISIS_SYS_ID_LEN];
	22	struct isis_sr_psid_info sr;
	23	struct mpls_label_stack *label_stack;
	24	};
	25
	26	struct isis_route_info {
	27	#define ISIS_ROUTE_FLAG_ACTIVE 0x01 /* active route for the prefix */
	28	#define ISIS_ROUTE_FLAG_ZEBRA_SYNCED 0x02 /* set when route synced to zebra */
	29	#define ISIS_ROUTE_FLAG_ZEBRA_RESYNC 0x04 /* set when route needs to sync */
	30	uint8_t flag;
	31	uint32_t cost;
	32	uint32_t depth;
	33	struct isis_sr_psid_info sr;
	34	struct isis_sr_psid_info sr_previous;
	35	struct list *nexthops;
	36	struct isis_route_info *backup;
	37	};
	38
	39	DECLARE_HOOK(isis_route_update_hook,
	40	(struct isis_area * area, struct prefix *prefix,
	41	struct isis_route_info *route_info),
	42	(area, prefix, route_info));
	43
	44	void isis_nexthop_delete(struct isis_nexthop *nexthop);
	45	void adjinfo2nexthop(int family, struct list *nexthops,
	46	struct isis_adjacency adj, struct isis_sr_psid_info sr,
	47	struct mpls_label_stack *label_stack);
	48	struct isis_route_info *
	49	isis_route_create(struct prefix prefix, struct prefix_ipv6 src_p,
	50	uint32_t cost, uint32_t depth, struct isis_sr_psid_info *sr,
	51	struct list *adjacencies, bool allow_ecmp,
	52	struct isis_area area, struct route_table table);
	53	void isis_route_delete(struct isis_area area, struct route_node rode,
	54	struct route_table *table);
	55
	56	/* Walk the given table and install new routes to zebra and remove old ones.
	57	* route status is tracked using ISIS_ROUTE_FLAG_ACTIVE */
	58	void isis_route_verify_table(struct isis_area area, struct route_table table,
	59	struct route_table *table_backup);
	60
	61	/* Same as isis_route_verify_table, but merge L1 and L2 routes before */
	62	void isis_route_verify_merge(struct isis_area *area,
	63	struct route_table *level1_table,
	64	struct route_table *level1_table_backup,
	65	struct route_table *level2_table,
	66	struct route_table *level2_table_backup);
	67
	68	/* Unset ISIS_ROUTE_FLAG_ACTIVE on all routes. Used before running spf. */
	69	void isis_route_invalidate_table(struct isis_area *area,
	70	struct route_table *table);
	71
	72	/* Cleanup route node when freeing routing table. */
	73	void isis_route_node_cleanup(struct route_table *table,
	74	struct route_node *node);
	75
	76	void isis_route_switchover_nexthop(struct isis_area *area,
	77	struct route_table *table, int family,
	78	union g_addr *nexthop_addr,
	79	ifindex_t ifindex);
	80
	81	#endif /* _ZEBRA_ISIS_ROUTE_H */