[mirror_frr.git] / isisd / isisd.h

/*
 * IS-IS Rout(e)ing protocol - isisd.h
 *
 * Copyright (C) 2001,2002   Sampo Saaristo
 *                           Tampere University of Technology
 *                           Institute of Communications Engineering
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public Licenseas published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 * This program 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 ISISD_H
#define ISISD_H

#include "vty.h"
#include "memory.h"

#include "isisd/isis_constants.h"
#include "isisd/isis_common.h"
#include "isisd/isis_redist.h"
#include "isisd/isis_pdu_counter.h"
#include "isisd/isis_circuit.h"
#include "isisd/isis_sr.h"
#include "isis_flags.h"
#include "isis_lsp.h"
#include "isis_lfa.h"
#include "qobj.h"
#include "ldp_sync.h"

DECLARE_MGROUP(ISISD);

#ifdef FABRICD
static const bool fabricd = true;
#define PROTO_TYPE ZEBRA_ROUTE_OPENFABRIC
#define PROTO_NAME "openfabric"
#define PROTO_HELP "OpenFabric routing protocol\n"
#define PROTO_REDIST_STR FRR_REDIST_STR_FABRICD
#define PROTO_REDIST_HELP FRR_REDIST_HELP_STR_FABRICD
#define ROUTER_NODE OPENFABRIC_NODE
#else
static const bool fabricd = false;
#define PROTO_TYPE ZEBRA_ROUTE_ISIS
#define PROTO_NAME "isis"
#define PROTO_HELP "IS-IS routing protocol\n"
#define PROTO_REDIST_STR FRR_REDIST_STR_ISISD
#define PROTO_REDIST_HELP FRR_REDIST_HELP_STR_ISISD
#define ROUTER_NODE ISIS_NODE
extern void isis_cli_init(void);
#endif

#define ISIS_FIND_VRF_ARGS(argv, argc, idx_vrf, vrf_name, all_vrf)             \
	if (argv_find(argv, argc, "vrf", &idx_vrf)) {                          \
		vrf_name = argv[idx_vrf + 1]->arg;                             \
		all_vrf = strmatch(vrf_name, "all");                           \
	}

extern struct zebra_privs_t isisd_privs;

/* uncomment if you are a developer in bug hunt */
/* #define EXTREME_DEBUG  */

struct fabricd;

struct isis_master {
	/* ISIS instance. */
	struct list *isis;
	/* ISIS thread master. */
	struct thread_master *master;
	uint8_t options;
};
#define F_ISIS_UNIT_TEST 0x01

struct isis {
	vrf_id_t vrf_id;
	char *name;
	unsigned long process_id;
	int sysid_set;
	uint8_t sysid[ISIS_SYS_ID_LEN]; /* SystemID for this IS */
	uint32_t router_id;		/* Router ID from zebra */
	struct list *area_list;	/* list of IS-IS areas */
	uint8_t max_area_addrs;		  /* maximumAreaAdresses */
	struct area_addr *man_area_addrs; /* manualAreaAddresses */
	time_t uptime;			  /* when did we start */
	struct thread *t_dync_clean;      /* dynamic hostname cache cleanup thread */
	uint32_t circuit_ids_used[8];     /* 256 bits to track circuit ids 1 through 255 */
	int snmp_notifications;
	struct list *dyn_cache;

	struct route_table *ext_info[REDIST_PROTOCOL_COUNT];
};

extern struct isis_master *im;

enum spf_tree_id {
	SPFTREE_IPV4 = 0,
	SPFTREE_IPV6,
	SPFTREE_DSTSRC,
	SPFTREE_COUNT
};

struct lsp_refresh_arg {
	struct isis_area *area;
	int level;
};

/* for yang configuration */
enum isis_metric_style {
	ISIS_NARROW_METRIC = 0,
	ISIS_WIDE_METRIC,
	ISIS_TRANSITION_METRIC,
};

struct isis_area {
	struct isis *isis;			       /* back pointer */
	struct lspdb_head lspdb[ISIS_LEVELS];	       /* link-state dbs */
	struct isis_spftree *spftree[SPFTREE_COUNT][ISIS_LEVELS];
#define DEFAULT_LSP_MTU 1497
	unsigned int lsp_mtu;      /* Size of LSPs to generate */
	struct list *circuit_list; /* IS-IS circuits */
	struct list *adjacency_list; /* IS-IS adjacencies */
	struct flags flags;
	struct thread *t_tick; /* LSP walker */
	struct thread *t_lsp_refresh[ISIS_LEVELS];
	struct timeval last_lsp_refresh_event[ISIS_LEVELS];
	struct thread *t_rlfa_rib_update;
	/* t_lsp_refresh is used in two ways:
	 * a) regular refresh of LSPs
	 * b) (possibly throttled) updates to LSPs
	 *
	 * The lsp_regenerate_pending flag tracks whether the timer is active
	 * for the a) or the b) case.
	 *
	 * It is of utmost importance to clear this flag when the timer is
	 * rescheduled for normal refresh, because otherwise, updates will
	 * be delayed until the next regular refresh.
	 */
	int lsp_regenerate_pending[ISIS_LEVELS];

	bool bfd_signalled_down;
	bool bfd_force_spf_refresh;

	struct fabricd *fabricd;

	/*
	 * Configurables
	 */
	struct isis_passwd area_passwd;
	struct isis_passwd domain_passwd;
	/* do we support dynamic hostnames?  */
	char dynhostname;
	/* do we support new style metrics?  */
	char newmetric;
	char oldmetric;
	/* identifies the routing instance   */
	char *area_tag;
	/* area addresses for this area      */
	struct list *area_addrs;
	uint16_t max_lsp_lifetime[ISIS_LEVELS];
	char is_type; /* level-1 level-1-2 or level-2-only */
	/* are we overloaded? */
	char overload_bit;
	uint32_t overload_counter;
	/* L1/L2 router identifier for inter-area traffic */
	char attached_bit_send;
	char attached_bit_rcv_ignore;
	uint16_t lsp_refresh[ISIS_LEVELS];
	/* minimum time allowed before lsp retransmission */
	uint16_t lsp_gen_interval[ISIS_LEVELS];
	/* min interval between between consequtive SPFs */
	uint16_t min_spf_interval[ISIS_LEVELS];
	/* the percentage of LSP mtu size used, before generating a new frag */
	int lsp_frag_threshold;
	uint64_t lsp_gen_count[ISIS_LEVELS];
	uint64_t lsp_purge_count[ISIS_LEVELS];
	uint32_t lsp_exceeded_max_counter;
	uint32_t lsp_seqno_skipped_counter;
	uint64_t spf_run_count[ISIS_LEVELS];
	int ip_circuits;
	/* logging adjacency changes? */
	uint8_t log_adj_changes;
	/* multi topology settings */
	struct list *mt_settings;
	/* MPLS-TE settings */
	struct mpls_te_area *mta;
	/* Segment Routing information */
	struct isis_sr_db srdb;
	int ipv6_circuits;
	bool purge_originator;
	/* SPF prefix priorities. */
	struct spf_prefix_priority_acl
		spf_prefix_priorities[SPF_PREFIX_PRIO_MAX];
	/* Fast Re-Route information. */
	size_t lfa_protected_links[ISIS_LEVELS];
	size_t lfa_load_sharing[ISIS_LEVELS];
	enum spf_prefix_priority lfa_priority_limit[ISIS_LEVELS];
	struct lfa_tiebreaker_tree_head lfa_tiebreakers[ISIS_LEVELS];
	char *rlfa_plist_name[ISIS_LEVELS];
	struct prefix_list *rlfa_plist[ISIS_LEVELS];
	size_t rlfa_protected_links[ISIS_LEVELS];
	size_t tilfa_protected_links[ISIS_LEVELS];
	/* MPLS LDP-IGP Sync */
	struct ldp_sync_info_cmd ldp_sync_cmd;
	/* Counters */
	uint32_t circuit_state_changes;
	struct isis_redist redist_settings[REDIST_PROTOCOL_COUNT]
					  [ZEBRA_ROUTE_MAX + 1][ISIS_LEVELS];
	struct route_table *ext_reach[REDIST_PROTOCOL_COUNT][ISIS_LEVELS];

	struct spf_backoff *spf_delay_ietf[ISIS_LEVELS]; /*Structure with IETF
							    SPF algo
							    parameters*/
	struct thread *spf_timer[ISIS_LEVELS];

	struct lsp_refresh_arg lsp_refresh_arg[ISIS_LEVELS];

	pdu_counter_t pdu_tx_counters;
	pdu_counter_t pdu_rx_counters;
	uint64_t lsp_rxmt_count;

	/* Area counters */
	uint64_t rej_adjacencies[2];
	uint64_t auth_type_failures[2];
	uint64_t auth_failures[2];
	uint64_t id_len_mismatches[2];
	uint64_t lsp_error_counter[2];

	QOBJ_FIELDS;
};
DECLARE_QOBJ_TYPE(isis_area);

DECLARE_MTYPE(ISIS_ACL_NAME);	/* isis_area->spf_prefix_prioritites */
DECLARE_MTYPE(ISIS_AREA_ADDR);	/* isis_area->area_addrs */

DECLARE_HOOK(isis_area_overload_bit_update, (struct isis_area * area), (area));

void isis_terminate(void);
void isis_master_init(struct thread_master *master);
void isis_vrf_link(struct isis *isis, struct vrf *vrf);
void isis_vrf_unlink(struct isis *isis, struct vrf *vrf);
void isis_global_instance_create(const char *vrf_name);
struct isis *isis_lookup_by_vrfid(vrf_id_t vrf_id);
struct isis *isis_lookup_by_vrfname(const char *vrfname);
struct isis *isis_lookup_by_sysid(const uint8_t *sysid);

void isis_init(void);
void isis_vrf_init(void);

struct isis *isis_new(const char *vrf_name);
void isis_finish(struct isis *isis);

void isis_area_add_circuit(struct isis_area *area,
			   struct isis_circuit *circuit);
void isis_area_del_circuit(struct isis_area *area,
			   struct isis_circuit *circuit);

struct isis_area *isis_area_create(const char *, const char *);
struct isis_area *isis_area_lookup(const char *, vrf_id_t vrf_id);
struct isis_area *isis_area_lookup_by_vrf(const char *area_tag,
					  const char *vrf_name);
int isis_area_get(struct vty *vty, const char *area_tag);
void isis_area_destroy(struct isis_area *area);
void isis_filter_update(struct access_list *access);
void isis_prefix_list_update(struct prefix_list *plist);
void print_debug(struct vty *, int, int);
struct isis_lsp *lsp_for_sysid(struct lspdb_head *head, const char *sysid_str,
			       struct isis *isis);

void isis_area_invalidate_routes(struct isis_area *area, int levels);
void isis_area_verify_routes(struct isis_area *area);

void isis_area_overload_bit_set(struct isis_area *area, bool overload_bit);
void isis_area_attached_bit_send_set(struct isis_area *area, bool attached_bit);
void isis_area_attached_bit_receive_set(struct isis_area *area,
					bool attached_bit);
void isis_area_dynhostname_set(struct isis_area *area, bool dynhostname);
void isis_area_metricstyle_set(struct isis_area *area, bool old_metric,
			       bool new_metric);
void isis_area_lsp_mtu_set(struct isis_area *area, unsigned int lsp_mtu);
void isis_area_is_type_set(struct isis_area *area, int is_type);
void isis_area_max_lsp_lifetime_set(struct isis_area *area, int level,
				    uint16_t max_lsp_lifetime);
void isis_area_lsp_refresh_set(struct isis_area *area, int level,
			       uint16_t lsp_refresh);
/* IS_LEVEL_1 sets area_passwd, IS_LEVEL_2 domain_passwd */
int isis_area_passwd_unset(struct isis_area *area, int level);
int isis_area_passwd_cleartext_set(struct isis_area *area, int level,
				   const char *passwd, uint8_t snp_auth);
int isis_area_passwd_hmac_md5_set(struct isis_area *area, int level,
				  const char *passwd, uint8_t snp_auth);
void show_isis_database_lspdb(struct vty *vty, struct isis_area *area,
			      int level, struct lspdb_head *lspdb,
			      const char *argv, int ui_level);

/* YANG paths */
#define ISIS_INSTANCE	"/frr-isisd:isis/instance"
#define ISIS_SR		"/frr-isisd:isis/instance/segment-routing"

/* Master of threads. */
extern struct thread_master *master;

extern unsigned long debug_adj_pkt;
extern unsigned long debug_snp_pkt;
extern unsigned long debug_update_pkt;
extern unsigned long debug_spf_events;
extern unsigned long debug_rte_events;
extern unsigned long debug_events;
extern unsigned long debug_pkt_dump;
extern unsigned long debug_lsp_gen;
extern unsigned long debug_lsp_sched;
extern unsigned long debug_flooding;
extern unsigned long debug_bfd;
extern unsigned long debug_tx_queue;
extern unsigned long debug_sr;
extern unsigned long debug_ldp_sync;
extern unsigned long debug_lfa;

#define DEBUG_ADJ_PACKETS                (1<<0)
#define DEBUG_SNP_PACKETS                (1<<1)
#define DEBUG_UPDATE_PACKETS             (1<<2)
#define DEBUG_SPF_EVENTS                 (1<<3)
#define DEBUG_RTE_EVENTS                 (1<<4)
#define DEBUG_EVENTS                     (1<<5)
#define DEBUG_PACKET_DUMP                (1<<6)
#define DEBUG_LSP_GEN                    (1<<7)
#define DEBUG_LSP_SCHED                  (1<<8)
#define DEBUG_FLOODING                   (1<<9)
#define DEBUG_BFD                        (1<<10)
#define DEBUG_TX_QUEUE                   (1<<11)
#define DEBUG_SR                         (1<<12)
#define DEBUG_LDP_SYNC                   (1<<13)
#define DEBUG_LFA                        (1<<14)

/* Debug related macro. */
#define IS_DEBUG_ADJ_PACKETS (debug_adj_pkt & DEBUG_ADJ_PACKETS)
#define IS_DEBUG_SNP_PACKETS (debug_snp_pkt & DEBUG_SNP_PACKETS)
#define IS_DEBUG_UPDATE_PACKETS (debug_update_pkt & DEBUG_UPDATE_PACKETS)
#define IS_DEBUG_SPF_EVENTS (debug_spf_events & DEBUG_SPF_EVENTS)
#define IS_DEBUG_RTE_EVENTS (debug_rte_events & DEBUG_RTE_EVENTS)
#define IS_DEBUG_EVENTS (debug_events & DEBUG_EVENTS)
#define IS_DEBUG_PACKET_DUMP (debug_pkt_dump & DEBUG_PACKET_DUMP)
#define IS_DEBUG_LSP_GEN (debug_lsp_gen & DEBUG_LSP_GEN)
#define IS_DEBUG_LSP_SCHED (debug_lsp_sched & DEBUG_LSP_SCHED)
#define IS_DEBUG_FLOODING (debug_flooding & DEBUG_FLOODING)
#define IS_DEBUG_BFD (debug_bfd & DEBUG_BFD)
#define IS_DEBUG_TX_QUEUE (debug_tx_queue & DEBUG_TX_QUEUE)
#define IS_DEBUG_SR (debug_sr & DEBUG_SR)
#define IS_DEBUG_LDP_SYNC (debug_ldp_sync & DEBUG_LDP_SYNC)
#define IS_DEBUG_LFA (debug_lfa & DEBUG_LFA)

#define lsp_debug(...)                                                         \
	do {                                                                   \
		if (IS_DEBUG_LSP_GEN)                                          \
			zlog_debug(__VA_ARGS__);                               \
	} while (0)

#define sched_debug(...)                                                       \
	do {                                                                   \
		if (IS_DEBUG_LSP_SCHED)                                        \
			zlog_debug(__VA_ARGS__);                               \
	} while (0)

#define sr_debug(...)                                                          \
	do {                                                                   \
		if (IS_DEBUG_SR)                                               \
			zlog_debug(__VA_ARGS__);                               \
	} while (0)

#define DEBUG_TE                         DEBUG_LSP_GEN

#endif /* ISISD_H */
Commit	Line	Data
eb5d44eb	1	/*
d62a17ae	2	* IS-IS Rout(e)ing protocol - isisd.h
eb5d44eb	3	*
eb5d44eb	4	* Copyright (C) 2001,2002 Sampo Saaristo
d62a17ae	5	* Tampere University of Technology
eb5d44eb	6	* Institute of Communications Engineering
eb5d44eb	7	*
d62a17ae	8	* This program is free software; you can redistribute it and/or modify it
	9	* under the terms of the GNU General Public Licenseas published by the Free
	10	* Software Foundation; either version 2 of the License, or (at your option)
eb5d44eb	11	* any later version.
eb5d44eb	12	*
d62a17ae	13	* This program is distributed in the hope that it will be useful,but WITHOUT
	14	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	15	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
eb5d44eb	16	* more details.
896014f4 DL	17	*
	18	* You should have received a copy of the GNU General Public License along
	19	* with this program; see the file COPYING; if not, write to the Free Software
	20	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
eb5d44eb	21	*/
	22
	23	#ifndef ISISD_H
	24	#define ISISD_H
	25
91283e76	26	#include "vty.h"
66b9a381	27	#include "memory.h"
91283e76	28
65f9a9a8 DL	29	#include "isisd/isis_constants.h"
65f9a9a8 DL	30	#include "isisd/isis_common.h"
f3ccedaa	31	#include "isisd/isis_redist.h"
39bb53d6	32	#include "isisd/isis_pdu_counter.h"
aaf2fd21	33	#include "isisd/isis_circuit.h"
26f6acaf	34	#include "isisd/isis_sr.h"
65f9a9a8	35	#include "isis_flags.h"
4bef0ec4	36	#include "isis_lsp.h"
e886416f	37	#include "isis_lfa.h"
676a4ea3	38	#include "qobj.h"
1cbf96a8	39	#include "ldp_sync.h"
f3ccedaa	40
66b9a381 DL	41	DECLARE_MGROUP(ISISD);
66b9a381 DL	42
7c0cbd0e CF	43	#ifdef FABRICD
	44	static const bool fabricd = true;
	45	#define PROTO_TYPE ZEBRA_ROUTE_OPENFABRIC
	46	#define PROTO_NAME "openfabric"
	47	#define PROTO_HELP "OpenFabric routing protocol\n"
	48	#define PROTO_REDIST_STR FRR_REDIST_STR_FABRICD
	49	#define PROTO_REDIST_HELP FRR_REDIST_HELP_STR_FABRICD
	50	#define ROUTER_NODE OPENFABRIC_NODE
	51	#else
	52	static const bool fabricd = false;
	53	#define PROTO_TYPE ZEBRA_ROUTE_ISIS
	54	#define PROTO_NAME "isis"
	55	#define PROTO_HELP "IS-IS routing protocol\n"
	56	#define PROTO_REDIST_STR FRR_REDIST_STR_ISISD
	57	#define PROTO_REDIST_HELP FRR_REDIST_HELP_STR_ISISD
	58	#define ROUTER_NODE ISIS_NODE
20bd27e2	59	extern void isis_cli_init(void);
7c0cbd0e CF	60	#endif
7c0cbd0e CF	61
eab88f36 K	62	#define ISIS_FIND_VRF_ARGS(argv, argc, idx_vrf, vrf_name, all_vrf) \
	63	if (argv_find(argv, argc, "vrf", &idx_vrf)) { \
	64	vrf_name = argv[idx_vrf + 1]->arg; \
	65	all_vrf = strmatch(vrf_name, "all"); \
	66	}
	67
76e292f9 DS	68	extern struct zebra_privs_t isisd_privs;
76e292f9 DS	69
eb5d44eb	70	/* uncomment if you are a developer in bug hunt */
eb5d44eb	71	/* #define EXTREME_DEBUG */
eb5d44eb	72
8e6fb83b CF	73	struct fabricd;
8e6fb83b CF	74
eab88f36 K	75	struct isis_master {
	76	/* ISIS instance. */
	77	struct list *isis;
	78	/* ISIS thread master. */
	79	struct thread_master *master;
eab88f36 K	80	uint8_t options;
eab88f36 K	81	};
52a7c25e	82	#define F_ISIS_UNIT_TEST 0x01
eab88f36	83
d62a17ae	84	struct isis {
260fcb95	85	vrf_id_t vrf_id;
eab88f36	86	char *name;
d7c0a89a	87	unsigned long process_id;
d62a17ae	88	int sysid_set;
d7c0a89a QY	89	uint8_t sysid[ISIS_SYS_ID_LEN]; /* SystemID for this IS */
d7c0a89a QY	90	uint32_t router_id; /* Router ID from zebra */
d62a17ae	91	struct list area_list; / list of IS-IS areas */
d7c0a89a	92	uint8_t max_area_addrs; /* maximumAreaAdresses */
d62a17ae	93	struct area_addr man_area_addrs; / manualAreaAddresses */
d62a17ae	94	time_t uptime; /* when did we start */
98c5bc15	95	struct thread t_dync_clean; / dynamic hostname cache cleanup thread */
c59f88c8	96	uint32_t circuit_ids_used[8]; /* 256 bits to track circuit ids 1 through 255 */
1ee746d9	97	int snmp_notifications;
240f48b3	98	struct list *dyn_cache;
d62a17ae	99
d62a17ae	100	struct route_table *ext_info[REDIST_PROTOCOL_COUNT];
eb5d44eb	101	};
eb5d44eb	102
eab88f36	103	extern struct isis_master *im;
3f045a08	104
be985ba0 CF	105	enum spf_tree_id {
	106	SPFTREE_IPV4 = 0,
	107	SPFTREE_IPV6,
321c1bbb	108	SPFTREE_DSTSRC,
be985ba0 CF	109	SPFTREE_COUNT
	110	};
	111
9196731f CF	112	struct lsp_refresh_arg {
	113	struct isis_area *area;
	114	int level;
	115	};
	116
e0df3206 EDP	117	/* for yang configuration */
	118	enum isis_metric_style {
	119	ISIS_NARROW_METRIC = 0,
	120	ISIS_WIDE_METRIC,
	121	ISIS_TRANSITION_METRIC,
	122	};
	123
d62a17ae	124	struct isis_area {
d62a17ae	125	struct isis isis; / back pointer */
4bef0ec4	126	struct lspdb_head lspdb[ISIS_LEVELS]; /* link-state dbs */
be985ba0	127	struct isis_spftree *spftree[SPFTREE_COUNT][ISIS_LEVELS];
b20ccb3a	128	#define DEFAULT_LSP_MTU 1497
d62a17ae	129	unsigned int lsp_mtu; /* Size of LSPs to generate */
d62a17ae	130	struct list circuit_list; / IS-IS circuits */
75eddbc3	131	struct list adjacency_list; / IS-IS adjacencies */
d62a17ae	132	struct flags flags;
	133	struct thread t_tick; / LSP walker */
	134	struct thread *t_lsp_refresh[ISIS_LEVELS];
f93025e1	135	struct timeval last_lsp_refresh_event[ISIS_LEVELS];
16fe8cff	136	struct thread *t_rlfa_rib_update;
d62a17ae	137	/* t_lsp_refresh is used in two ways:
	138	* a) regular refresh of LSPs
	139	* b) (possibly throttled) updates to LSPs
	140	*
	141	* The lsp_regenerate_pending flag tracks whether the timer is active
	142	* for the a) or the b) case.
	143	*
	144	* It is of utmost importance to clear this flag when the timer is
	145	* rescheduled for normal refresh, because otherwise, updates will
	146	* be delayed until the next regular refresh.
	147	*/
	148	int lsp_regenerate_pending[ISIS_LEVELS];
	149
690497fb G	150	bool bfd_signalled_down;
	151	bool bfd_force_spf_refresh;
	152
8e6fb83b CF	153	struct fabricd *fabricd;
8e6fb83b CF	154
d62a17ae	155	/*
	156	* Configurables
	157	*/
	158	struct isis_passwd area_passwd;
	159	struct isis_passwd domain_passwd;
	160	/* do we support dynamic hostnames? */
	161	char dynhostname;
	162	/* do we support new style metrics? */
	163	char newmetric;
	164	char oldmetric;
	165	/* identifies the routing instance */
	166	char *area_tag;
	167	/* area addresses for this area */
	168	struct list *area_addrs;
d7c0a89a	169	uint16_t max_lsp_lifetime[ISIS_LEVELS];
d62a17ae	170	char is_type; /* level-1 level-1-2 or level-2-only */
	171	/* are we overloaded? */
	172	char overload_bit;
1ee746d9	173	uint32_t overload_counter;
d62a17ae	174	/* L1/L2 router identifier for inter-area traffic */
f3abc412	175	char attached_bit_send;
f3abc412	176	char attached_bit_rcv_ignore;
d7c0a89a	177	uint16_t lsp_refresh[ISIS_LEVELS];
d62a17ae	178	/* minimum time allowed before lsp retransmission */
d7c0a89a	179	uint16_t lsp_gen_interval[ISIS_LEVELS];
d62a17ae	180	/* min interval between between consequtive SPFs */
d7c0a89a	181	uint16_t min_spf_interval[ISIS_LEVELS];
d62a17ae	182	/* the percentage of LSP mtu size used, before generating a new frag */
d62a17ae	183	int lsp_frag_threshold;
062f4d36	184	uint64_t lsp_gen_count[ISIS_LEVELS];
6f004b60	185	uint64_t lsp_purge_count[ISIS_LEVELS];
1ee746d9	186	uint32_t lsp_exceeded_max_counter;
	187	uint32_t lsp_seqno_skipped_counter;
	188	uint64_t spf_run_count[ISIS_LEVELS];
d62a17ae	189	int ip_circuits;
d62a17ae	190	/* logging adjacency changes? */
d7c0a89a	191	uint8_t log_adj_changes;
d62a17ae	192	/* multi topology settings */
d62a17ae	193	struct list *mt_settings;
2e2a8b91 OD	194	/* MPLS-TE settings */
2e2a8b91 OD	195	struct mpls_te_area *mta;
26f6acaf RW	196	/* Segment Routing information */
26f6acaf RW	197	struct isis_sr_db srdb;
d62a17ae	198	int ipv6_circuits;
2c92bee4	199	bool purge_originator;
e886416f RW	200	/* SPF prefix priorities. */
	201	struct spf_prefix_priority_acl
	202	spf_prefix_priorities[SPF_PREFIX_PRIO_MAX];
c951ee6e RW	203	/* Fast Re-Route information. */
c951ee6e RW	204	size_t lfa_protected_links[ISIS_LEVELS];
e886416f RW	205	size_t lfa_load_sharing[ISIS_LEVELS];
	206	enum spf_prefix_priority lfa_priority_limit[ISIS_LEVELS];
	207	struct lfa_tiebreaker_tree_head lfa_tiebreakers[ISIS_LEVELS];
16fe8cff RW	208	char *rlfa_plist_name[ISIS_LEVELS];
	209	struct prefix_list *rlfa_plist[ISIS_LEVELS];
	210	size_t rlfa_protected_links[ISIS_LEVELS];
e886416f	211	size_t tilfa_protected_links[ISIS_LEVELS];
ec62fbaa IR	212	/* MPLS LDP-IGP Sync */
ec62fbaa IR	213	struct ldp_sync_info_cmd ldp_sync_cmd;
d62a17ae	214	/* Counters */
d7c0a89a	215	uint32_t circuit_state_changes;
d62a17ae	216	struct isis_redist redist_settings[REDIST_PROTOCOL_COUNT]
	217	[ZEBRA_ROUTE_MAX + 1][ISIS_LEVELS];
	218	struct route_table *ext_reach[REDIST_PROTOCOL_COUNT][ISIS_LEVELS];
	219
	220	struct spf_backoff spf_delay_ietf[ISIS_LEVELS]; /Structure with IETF
	221	SPF algo
	222	parameters*/
	223	struct thread *spf_timer[ISIS_LEVELS];
9196731f CF	224
9196731f CF	225	struct lsp_refresh_arg lsp_refresh_arg[ISIS_LEVELS];
d62a17ae	226
39bb53d6 CF	227	pdu_counter_t pdu_tx_counters;
39bb53d6 CF	228	pdu_counter_t pdu_rx_counters;
86d6f80d	229	uint64_t lsp_rxmt_count;
39bb53d6	230
1ee746d9	231	/* Area counters */
	232	uint64_t rej_adjacencies[2];
	233	uint64_t auth_type_failures[2];
	234	uint64_t auth_failures[2];
	235	uint64_t id_len_mismatches[2];
	236	uint64_t lsp_error_counter[2];
	237
96244aca	238	QOBJ_FIELDS;
eb5d44eb	239	};
96244aca	240	DECLARE_QOBJ_TYPE(isis_area);
eb5d44eb	241
66b9a381 DL	242	DECLARE_MTYPE(ISIS_ACL_NAME); /* isis_area->spf_prefix_prioritites */
	243	DECLARE_MTYPE(ISIS_AREA_ADDR); /* isis_area->area_addrs */
	244
8451921b	245	DECLARE_HOOK(isis_area_overload_bit_update, (struct isis_area * area), (area));
1ee746d9	246
eab88f36	247	void isis_terminate(void);
eab88f36 K	248	void isis_master_init(struct thread_master *master);
	249	void isis_vrf_link(struct isis isis, struct vrf vrf);
	250	void isis_vrf_unlink(struct isis isis, struct vrf vrf);
65251ce8	251	void isis_global_instance_create(const char *vrf_name);
eab88f36 K	252	struct isis *isis_lookup_by_vrfid(vrf_id_t vrf_id);
eab88f36 K	253	struct isis isis_lookup_by_vrfname(const char vrfname);
36944791	254	struct isis isis_lookup_by_sysid(const uint8_t sysid);
eab88f36	255
d62a17ae	256	void isis_init(void);
65251ce8	257	void isis_vrf_init(void);
	258
	259	struct isis isis_new(const char vrf_name);
bcf22081 IR	260	void isis_finish(struct isis *isis);
	261
	262	void isis_area_add_circuit(struct isis_area *area,
	263	struct isis_circuit *circuit);
	264	void isis_area_del_circuit(struct isis_area *area,
	265	struct isis_circuit *circuit);
	266
eab88f36 K	267	struct isis_area isis_area_create(const char , const char *);
eab88f36 K	268	struct isis_area isis_area_lookup(const char , vrf_id_t vrf_id);
65251ce8	269	struct isis_area isis_area_lookup_by_vrf(const char area_tag,
65251ce8	270	const char *vrf_name);
d62a17ae	271	int isis_area_get(struct vty vty, const char area_tag);
14c6e772	272	void isis_area_destroy(struct isis_area *area);
e886416f	273	void isis_filter_update(struct access_list *access);
16fe8cff	274	void isis_prefix_list_update(struct prefix_list *plist);
3f045a08	275	void print_debug(struct vty *, int, int);
1d88e63a DS	276	struct isis_lsp lsp_for_sysid(struct lspdb_head head, const char *sysid_str,
1d88e63a DS	277	struct isis *isis);
3f045a08	278
3dace42d CF	279	void isis_area_invalidate_routes(struct isis_area *area, int levels);
	280	void isis_area_verify_routes(struct isis_area *area);
	281
a38a72db	282	void isis_area_overload_bit_set(struct isis_area *area, bool overload_bit);
f3abc412	283	void isis_area_attached_bit_send_set(struct isis_area *area, bool attached_bit);
	284	void isis_area_attached_bit_receive_set(struct isis_area *area,
	285	bool attached_bit);
a38a72db CF	286	void isis_area_dynhostname_set(struct isis_area *area, bool dynhostname);
	287	void isis_area_metricstyle_set(struct isis_area *area, bool old_metric,
	288	bool new_metric);
6754fc66 CF	289	void isis_area_lsp_mtu_set(struct isis_area *area, unsigned int lsp_mtu);
6754fc66 CF	290	void isis_area_is_type_set(struct isis_area *area, int is_type);
466ed406	291	void isis_area_max_lsp_lifetime_set(struct isis_area *area, int level,
d62a17ae	292	uint16_t max_lsp_lifetime);
466ed406 CF	293	void isis_area_lsp_refresh_set(struct isis_area *area, int level,
466ed406 CF	294	uint16_t lsp_refresh);
9093b230	295	/* IS_LEVEL_1 sets area_passwd, IS_LEVEL_2 domain_passwd */
d62a17ae	296	int isis_area_passwd_unset(struct isis_area *area, int level);
d62a17ae	297	int isis_area_passwd_cleartext_set(struct isis_area *area, int level,
d7c0a89a	298	const char *passwd, uint8_t snp_auth);
d62a17ae	299	int isis_area_passwd_hmac_md5_set(struct isis_area *area, int level,
d7c0a89a	300	const char *passwd, uint8_t snp_auth);
52a7c25e RW	301	void show_isis_database_lspdb(struct vty vty, struct isis_area area,
	302	int level, struct lspdb_head *lspdb,
	303	const char *argv, int ui_level);
65f9a9a8	304
26f6acaf RW	305	/* YANG paths */
	306	#define ISIS_INSTANCE "/frr-isisd:isis/instance"
	307	#define ISIS_SR "/frr-isisd:isis/instance/segment-routing"
	308
3f045a08 JB	309	/* Master of threads. */
3f045a08 JB	310	extern struct thread_master *master;
eb5d44eb	311
e740f9c1	312	extern unsigned long debug_adj_pkt;
	313	extern unsigned long debug_snp_pkt;
	314	extern unsigned long debug_update_pkt;
	315	extern unsigned long debug_spf_events;
	316	extern unsigned long debug_rte_events;
	317	extern unsigned long debug_events;
	318	extern unsigned long debug_pkt_dump;
	319	extern unsigned long debug_lsp_gen;
	320	extern unsigned long debug_lsp_sched;
	321	extern unsigned long debug_flooding;
	322	extern unsigned long debug_bfd;
	323	extern unsigned long debug_tx_queue;
	324	extern unsigned long debug_sr;
1cbf96a8	325	extern unsigned long debug_ldp_sync;
2866b119	326	extern unsigned long debug_lfa;
e740f9c1	327
eb5d44eb	328	#define DEBUG_ADJ_PACKETS (1<<0)
26687d25 CF	329	#define DEBUG_SNP_PACKETS (1<<1)
	330	#define DEBUG_UPDATE_PACKETS (1<<2)
	331	#define DEBUG_SPF_EVENTS (1<<3)
	332	#define DEBUG_RTE_EVENTS (1<<4)
	333	#define DEBUG_EVENTS (1<<5)
	334	#define DEBUG_PACKET_DUMP (1<<6)
	335	#define DEBUG_LSP_GEN (1<<7)
	336	#define DEBUG_LSP_SCHED (1<<8)
ddb33326	337	#define DEBUG_FLOODING (1<<9)
26687d25	338	#define DEBUG_BFD (1<<10)
161fa356	339	#define DEBUG_TX_QUEUE (1<<11)
26f6acaf	340	#define DEBUG_SR (1<<12)
c951ee6e	341	#define DEBUG_LDP_SYNC (1<<13)
2866b119	342	#define DEBUG_LFA (1<<14)
14872644	343
e740f9c1	344	/* Debug related macro. */
	345	#define IS_DEBUG_ADJ_PACKETS (debug_adj_pkt & DEBUG_ADJ_PACKETS)
	346	#define IS_DEBUG_SNP_PACKETS (debug_snp_pkt & DEBUG_SNP_PACKETS)
	347	#define IS_DEBUG_UPDATE_PACKETS (debug_update_pkt & DEBUG_UPDATE_PACKETS)
	348	#define IS_DEBUG_SPF_EVENTS (debug_spf_events & DEBUG_SPF_EVENTS)
	349	#define IS_DEBUG_RTE_EVENTS (debug_rte_events & DEBUG_RTE_EVENTS)
	350	#define IS_DEBUG_EVENTS (debug_events & DEBUG_EVENTS)
	351	#define IS_DEBUG_PACKET_DUMP (debug_pkt_dump & DEBUG_PACKET_DUMP)
	352	#define IS_DEBUG_LSP_GEN (debug_lsp_gen & DEBUG_LSP_GEN)
	353	#define IS_DEBUG_LSP_SCHED (debug_lsp_sched & DEBUG_LSP_SCHED)
	354	#define IS_DEBUG_FLOODING (debug_flooding & DEBUG_FLOODING)
	355	#define IS_DEBUG_BFD (debug_bfd & DEBUG_BFD)
	356	#define IS_DEBUG_TX_QUEUE (debug_tx_queue & DEBUG_TX_QUEUE)
	357	#define IS_DEBUG_SR (debug_sr & DEBUG_SR)
1cbf96a8	358	#define IS_DEBUG_LDP_SYNC (debug_ldp_sync & DEBUG_LDP_SYNC)
2866b119	359	#define IS_DEBUG_LFA (debug_lfa & DEBUG_LFA)
e740f9c1	360
d62a17ae	361	#define lsp_debug(...) \
d62a17ae	362	do { \
e740f9c1	363	if (IS_DEBUG_LSP_GEN) \
d62a17ae	364	zlog_debug(__VA_ARGS__); \
	365	} while (0)
	366
	367	#define sched_debug(...) \
	368	do { \
e740f9c1	369	if (IS_DEBUG_LSP_SCHED) \
d62a17ae	370	zlog_debug(__VA_ARGS__); \
d62a17ae	371	} while (0)
414766a1	372
b407c77a OD	373	#define sr_debug(...) \
b407c77a OD	374	do { \
e740f9c1	375	if (IS_DEBUG_SR) \
b407c77a OD	376	zlog_debug(__VA_ARGS__); \
	377	} while (0)
	378
26687d25	379	#define DEBUG_TE DEBUG_LSP_GEN
f8c06e2c	380
eb5d44eb	381	#endif /* ISISD_H */