[mirror_frr.git] / isisd / isis_circuit.h

/*
 * IS-IS Rout(e)ing protocol - isis_circuit.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 ISIS_CIRCUIT_H
#define ISIS_CIRCUIT_H

#include "vty.h"
#include "if.h"
#include "qobj.h"
#include "prefix.h"
#include "ferr.h"

#include "isis_constants.h"
#include "isis_common.h"
#include "isis_csm.h"

DECLARE_HOOK(isis_if_new_hook, (struct interface *ifp), (ifp));

struct isis_lsp;

struct password {
	struct password *next;
	int len;
	uint8_t *pass;
};

struct metric {
	uint8_t metric_default;
	uint8_t metric_error;
	uint8_t metric_expense;
	uint8_t metric_delay;
};

struct isis_bcast_info {
	uint8_t snpa[ETH_ALEN];		      /* SNPA of this circuit */
	char run_dr_elect[ISIS_LEVELS];       /* Should we run dr election ? */
	struct thread *t_run_dr[ISIS_LEVELS]; /* DR election thread */
	struct thread *t_send_lan_hello[ISIS_LEVELS]; /* send LAN IIHs in this
							 thread */
	struct list *adjdb[ISIS_LEVELS];	      /* adjacency dbs */
	struct list *lan_neighs[ISIS_LEVELS];     /* list of lx neigh snpa */
	char is_dr[ISIS_LEVELS];		  /* Are we level x DR ? */
	uint8_t l1_desig_is[ISIS_SYS_ID_LEN + 1]; /* level-1 DR */
	uint8_t l2_desig_is[ISIS_SYS_ID_LEN + 1]; /* level-2 DR */
	struct thread *t_refresh_pseudo_lsp[ISIS_LEVELS]; /* refresh pseudo-node
							     LSPs */
};

struct isis_p2p_info {
	struct isis_adjacency *neighbor;
	struct thread *t_send_p2p_hello; /* send P2P IIHs in this thread  */
};

struct isis_circuit_arg {
	int level;
	struct isis_circuit *circuit;
};

struct isis_circuit {
	enum isis_circuit_state state;
	uint8_t circuit_id;	  /* l1/l2 bcast CircuitID */
	time_t last_uptime;
	struct isis *isis;
	struct isis_area *area;      /* back pointer to the area */
	struct interface *interface; /* interface info from z */
	int fd;			     /* IS-IS l1/2 socket */
	int sap_length;		     /* SAP length for DLPI */
	struct nlpids nlpids;
	/*
	 * Threads
	 */
	struct thread *t_read;
	struct thread *t_send_csnp[ISIS_LEVELS];
	struct thread *t_send_psnp[ISIS_LEVELS];
	struct isis_tx_queue *tx_queue;
	struct isis_circuit_arg
		level_arg[ISIS_LEVELS]; /* used as argument for threads */

	/* there is no real point in two streams, just for programming kicker */
	int (*rx)(struct isis_circuit *circuit, uint8_t *ssnpa);
	struct stream *rcv_stream; /* Stream for receiving */
	int (*tx)(struct isis_circuit *circuit, int level);
	struct stream *snd_stream; /* Stream for sending */
	int idx;		   /* idx in S[RM|SN] flags */
#define CIRCUIT_T_UNKNOWN    0
#define CIRCUIT_T_BROADCAST  1
#define CIRCUIT_T_P2P        2
#define CIRCUIT_T_LOOPBACK   3
	int circ_type;		   /* type of the physical interface */
	int circ_type_config;      /* config type of the physical interface */
	union {
		struct isis_bcast_info bc;
		struct isis_p2p_info p2p;
	} u;
	uint8_t priority[ISIS_LEVELS]; /* l1/2 IS configured priority */
	int pad_hellos;     /* add padding to Hello PDUs ? */
	char ext_domain;    /* externalDomain   (boolean) */
	int lsp_regenerate_pending[ISIS_LEVELS];
	uint64_t lsp_error_counter;

	/*
	 * Configurables
	 */
	char *tag;		       /* area tag */
	struct isis_passwd passwd;     /* Circuit rx/tx password */
	int is_type_config;	       /* configured circuit is type */
	int is_type;		       /* circuit is type == level of circuit
					* differentiated from circuit type (media) */
	uint32_t hello_interval[ISIS_LEVELS];   /* hello-interval in seconds */
	uint16_t hello_multiplier[ISIS_LEVELS]; /* hello-multiplier */
	uint16_t csnp_interval[ISIS_LEVELS];    /* csnp-interval in seconds */
	uint16_t psnp_interval[ISIS_LEVELS];    /* psnp-interval in seconds */
	uint8_t metric[ISIS_LEVELS];
	uint32_t te_metric[ISIS_LEVELS];
	struct isis_ext_subtlvs *ext; /* Extended parameters (TE + Adj SID */
	int ip_router;  /* Route IP ? */
	int is_passive; /* Is Passive ? */
	struct list *mt_settings;   /* IS-IS MT Settings */
	struct list *ip_addrs;      /* our IP addresses */
	int ipv6_router;	    /* Route IPv6 ? */
	struct list *ipv6_link;     /* our link local IPv6 addresses */
	struct list *ipv6_non_link; /* our non-link local IPv6 addresses */
	uint16_t upadjcount[ISIS_LEVELS];
#define ISIS_CIRCUIT_FLAPPED_AFTER_SPF 0x01
	uint8_t flags;
	bool disable_threeway_adj;
	struct {
		bool enabled;
		char *profile;
	} bfd_config;
	struct ldp_sync_info *ldp_sync_info;
	bool lfa_protection[ISIS_LEVELS];
	bool rlfa_protection[ISIS_LEVELS];
	uint32_t rlfa_max_metric[ISIS_LEVELS];
	struct hash *lfa_excluded_ifaces[ISIS_LEVELS];
	bool tilfa_protection[ISIS_LEVELS];
	bool tilfa_node_protection[ISIS_LEVELS];
	bool tilfa_link_fallback[ISIS_LEVELS];
	/*
	 * Counters as in 10589--11.2.5.9
	 */
	uint32_t adj_state_changes; /* changesInAdjacencyState */
	uint32_t init_failures;     /* intialisationFailures */
	uint32_t ctrl_pdus_rxed;    /* controlPDUsReceived */
	uint32_t ctrl_pdus_txed;    /* controlPDUsSent */
	uint32_t desig_changes[ISIS_LEVELS]; /* lanLxDesignatedIntermediateSystemChanges
					      */
	uint32_t rej_adjacencies; /* rejectedAdjacencies */
	/*
	 * Counters as in ietf-isis@2019-09-09.yang
	 */
	uint32_t id_len_mismatches; /* id-len-mismatch */
	uint32_t max_area_addr_mismatches; /* max-area-addresses-mismatch */
	uint32_t auth_type_failures; /*authentication-type-fails */
	uint32_t auth_failures; /* authentication-fails */

	uint32_t snmp_id; /* Circuit id in snmp */

	uint32_t snmp_adj_idx_gen; /* Create unique id for adjacency on creation
				    */
	struct list *snmp_adj_list; /* List in id order */

	QOBJ_FIELDS;
};
DECLARE_QOBJ_TYPE(isis_circuit);

void isis_circuit_init(void);
struct isis_circuit *isis_circuit_new(struct interface *ifp, const char *tag);
void isis_circuit_del(struct isis_circuit *circuit);
struct isis_circuit *circuit_scan_by_ifp(struct interface *ifp);
void isis_circuit_configure(struct isis_circuit *circuit,
			    struct isis_area *area);
void isis_circuit_deconfigure(struct isis_circuit *circuit,
			      struct isis_area *area);
void isis_circuit_if_add(struct isis_circuit *circuit, struct interface *ifp);
void isis_circuit_if_del(struct isis_circuit *circuit, struct interface *ifp);
void isis_circuit_if_bind(struct isis_circuit *circuit, struct interface *ifp);
void isis_circuit_if_unbind(struct isis_circuit *circuit,
			    struct interface *ifp);
void isis_circuit_add_addr(struct isis_circuit *circuit,
			   struct connected *conn);
void isis_circuit_del_addr(struct isis_circuit *circuit,
			   struct connected *conn);
void isis_circuit_prepare(struct isis_circuit *circuit);
int isis_circuit_up(struct isis_circuit *circuit);
void isis_circuit_down(struct isis_circuit *);
void circuit_update_nlpids(struct isis_circuit *circuit);
void isis_circuit_print_vty(struct isis_circuit *circuit, struct vty *vty,
			    char detail);
size_t isis_circuit_pdu_size(struct isis_circuit *circuit);
void isis_circuit_stream(struct isis_circuit *circuit, struct stream **stream);

void isis_circuit_af_set(struct isis_circuit *circuit, bool ip_router,
			 bool ipv6_router);
ferr_r isis_circuit_passive_set(struct isis_circuit *circuit, bool passive);
void isis_circuit_is_type_set(struct isis_circuit *circuit, int is_type);
void isis_circuit_circ_type_set(struct isis_circuit *circuit, int circ_type);

ferr_r isis_circuit_metric_set(struct isis_circuit *circuit, int level,
			       int metric);

ferr_r isis_circuit_passwd_unset(struct isis_circuit *circuit);
ferr_r isis_circuit_passwd_set(struct isis_circuit *circuit,
			       uint8_t passwd_type, const char *passwd);
ferr_r isis_circuit_passwd_cleartext_set(struct isis_circuit *circuit,
					 const char *passwd);
ferr_r isis_circuit_passwd_hmac_md5_set(struct isis_circuit *circuit,
					const char *passwd);

int isis_circuit_mt_enabled_set(struct isis_circuit *circuit, uint16_t mtid,
				bool enabled);

#ifdef FABRICD
DECLARE_HOOK(isis_circuit_config_write,
	    (struct isis_circuit *circuit, struct vty *vty),
	    (circuit, vty));
#endif

DECLARE_HOOK(isis_circuit_add_addr_hook, (struct isis_circuit *circuit),
	     (circuit));

DECLARE_HOOK(isis_circuit_new_hook, (struct isis_circuit *circuit), (circuit));
DECLARE_HOOK(isis_circuit_del_hook, (struct isis_circuit *circuit), (circuit));

#endif /* _ZEBRA_ISIS_CIRCUIT_H */
Commit	Line	Data
eb5d44eb	1	/*
	2	* IS-IS Rout(e)ing protocol - isis_circuit.h
	3	*
	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 ISIS_CIRCUIT_H
	24	#define ISIS_CIRCUIT_H
	25
91283e76	26	#include "vty.h"
65f9a9a8	27	#include "if.h"
676a4ea3	28	#include "qobj.h"
d1be6968	29	#include "prefix.h"
64dd3ffe	30	#include "ferr.h"
65f9a9a8 DL	31
	32	#include "isis_constants.h"
	33	#include "isis_common.h"
61cd5761	34	#include "isis_csm.h"
91283e76	35
ef7bd2a3 DS	36	DECLARE_HOOK(isis_if_new_hook, (struct interface *ifp), (ifp));
ef7bd2a3 DS	37
58e16237 CF	38	struct isis_lsp;
58e16237 CF	39
d62a17ae	40	struct password {
	41	struct password *next;
	42	int len;
d7c0a89a	43	uint8_t *pass;
eb5d44eb	44	};
eb5d44eb	45
d62a17ae	46	struct metric {
d7c0a89a QY	47	uint8_t metric_default;
	48	uint8_t metric_error;
	49	uint8_t metric_expense;
	50	uint8_t metric_delay;
eb5d44eb	51	};
eb5d44eb	52
d62a17ae	53	struct isis_bcast_info {
981cc629 RW	54	uint8_t snpa[ETH_ALEN]; /* SNPA of this circuit */
	55	char run_dr_elect[ISIS_LEVELS]; /* Should we run dr election ? */
	56	struct thread t_run_dr[ISIS_LEVELS]; / DR election thread */
	57	struct thread t_send_lan_hello[ISIS_LEVELS]; / send LAN IIHs in this
	58	thread */
	59	struct list adjdb[ISIS_LEVELS]; / adjacency dbs */
	60	struct list lan_neighs[ISIS_LEVELS]; / list of lx neigh snpa */
	61	char is_dr[ISIS_LEVELS]; /* Are we level x DR ? */
d7c0a89a QY	62	uint8_t l1_desig_is[ISIS_SYS_ID_LEN + 1]; /* level-1 DR */
d7c0a89a QY	63	uint8_t l2_desig_is[ISIS_SYS_ID_LEN + 1]; /* level-2 DR */
981cc629 RW	64	struct thread t_refresh_pseudo_lsp[ISIS_LEVELS]; / refresh pseudo-node
981cc629 RW	65	LSPs */
eb5d44eb	66	};
eb5d44eb	67
d62a17ae	68	struct isis_p2p_info {
	69	struct isis_adjacency *neighbor;
	70	struct thread t_send_p2p_hello; / send P2P IIHs in this thread */
eb5d44eb	71	};
eb5d44eb	72
7da4aa3c CF	73	struct isis_circuit_arg {
	74	int level;
	75	struct isis_circuit *circuit;
	76	};
	77
d62a17ae	78	struct isis_circuit {
61cd5761	79	enum isis_circuit_state state;
d7c0a89a	80	uint8_t circuit_id; /* l1/l2 bcast CircuitID */
1ee746d9	81	time_t last_uptime;
0bcdb96b	82	struct isis *isis;
d62a17ae	83	struct isis_area area; / back pointer to the area */
	84	struct interface interface; / interface info from z */
	85	int fd; /* IS-IS l1/2 socket */
	86	int sap_length; /* SAP length for DLPI */
	87	struct nlpids nlpids;
	88	/*
	89	* Threads
	90	*/
	91	struct thread *t_read;
981cc629 RW	92	struct thread *t_send_csnp[ISIS_LEVELS];
981cc629 RW	93	struct thread *t_send_psnp[ISIS_LEVELS];
9b39405f	94	struct isis_tx_queue *tx_queue;
981cc629 RW	95	struct isis_circuit_arg
981cc629 RW	96	level_arg[ISIS_LEVELS]; /* used as argument for threads */
9b39405f	97
d62a17ae	98	/* there is no real point in two streams, just for programming kicker */
d7c0a89a	99	int (rx)(struct isis_circuit circuit, uint8_t *ssnpa);
d62a17ae	100	struct stream rcv_stream; / Stream for receiving */
	101	int (tx)(struct isis_circuit circuit, int level);
	102	struct stream snd_stream; / Stream for sending */
	103	int idx; /* idx in S[RM\|SN] flags */
3f045a08 JB	104	#define CIRCUIT_T_UNKNOWN 0
	105	#define CIRCUIT_T_BROADCAST 1
	106	#define CIRCUIT_T_P2P 2
	107	#define CIRCUIT_T_LOOPBACK 3
d62a17ae	108	int circ_type; /* type of the physical interface */
	109	int circ_type_config; /* config type of the physical interface */
	110	union {
	111	struct isis_bcast_info bc;
	112	struct isis_p2p_info p2p;
	113	} u;
981cc629	114	uint8_t priority[ISIS_LEVELS]; /* l1/2 IS configured priority */
d62a17ae	115	int pad_hellos; /* add padding to Hello PDUs ? */
	116	char ext_domain; /* externalDomain (boolean) */
	117	int lsp_regenerate_pending[ISIS_LEVELS];
1ee746d9	118	uint64_t lsp_error_counter;
1ee746d9	119
d62a17ae	120	/*
	121	* Configurables
	122	*/
bcf22081	123	char tag; / area tag */
d62a17ae	124	struct isis_passwd passwd; /* Circuit rx/tx password */
2f9a06f0	125	int is_type_config; /* configured circuit is type */
d62a17ae	126	int is_type; /* circuit is type == level of circuit
d62a17ae	127	* differentiated from circuit type (media) */
981cc629 RW	128	uint32_t hello_interval[ISIS_LEVELS]; /* hello-interval in seconds */
	129	uint16_t hello_multiplier[ISIS_LEVELS]; /* hello-multiplier */
	130	uint16_t csnp_interval[ISIS_LEVELS]; /* csnp-interval in seconds */
	131	uint16_t psnp_interval[ISIS_LEVELS]; /* psnp-interval in seconds */
	132	uint8_t metric[ISIS_LEVELS];
	133	uint32_t te_metric[ISIS_LEVELS];
1b3f47d0	134	struct isis_ext_subtlvs ext; / Extended parameters (TE + Adj SID */
d62a17ae	135	int ip_router; /* Route IP ? */
	136	int is_passive; /* Is Passive ? */
	137	struct list mt_settings; / IS-IS MT Settings */
	138	struct list ip_addrs; / our IP addresses */
	139	int ipv6_router; /* Route IPv6 ? */
	140	struct list ipv6_link; / our link local IPv6 addresses */
	141	struct list ipv6_non_link; / our non-link local IPv6 addresses */
981cc629	142	uint16_t upadjcount[ISIS_LEVELS];
3f045a08	143	#define ISIS_CIRCUIT_FLAPPED_AFTER_SPF 0x01
d7c0a89a	144	uint8_t flags;
58e5d748	145	bool disable_threeway_adj;
13bf3830 IR	146	struct {
	147	bool enabled;
	148	char *profile;
	149	} bfd_config;
1cbf96a8	150	struct ldp_sync_info *ldp_sync_info;
e886416f	151	bool lfa_protection[ISIS_LEVELS];
16fe8cff RW	152	bool rlfa_protection[ISIS_LEVELS];
16fe8cff RW	153	uint32_t rlfa_max_metric[ISIS_LEVELS];
e886416f	154	struct hash *lfa_excluded_ifaces[ISIS_LEVELS];
c951ee6e RW	155	bool tilfa_protection[ISIS_LEVELS];
c951ee6e RW	156	bool tilfa_node_protection[ISIS_LEVELS];
ce4eccfa	157	bool tilfa_link_fallback[ISIS_LEVELS];
d62a17ae	158	/*
	159	* Counters as in 10589--11.2.5.9
	160	*/
d7c0a89a QY	161	uint32_t adj_state_changes; /* changesInAdjacencyState */
	162	uint32_t init_failures; /* intialisationFailures */
	163	uint32_t ctrl_pdus_rxed; /* controlPDUsReceived */
	164	uint32_t ctrl_pdus_txed; /* controlPDUsSent */
981cc629 RW	165	uint32_t desig_changes[ISIS_LEVELS]; /* lanLxDesignatedIntermediateSystemChanges
981cc629 RW	166	*/
d7c0a89a	167	uint32_t rej_adjacencies; /* rejectedAdjacencies */
c32496ee RW	168	/*
	169	* Counters as in ietf-isis@2019-09-09.yang
	170	*/
	171	uint32_t id_len_mismatches; /* id-len-mismatch */
	172	uint32_t max_area_addr_mismatches; /* max-area-addresses-mismatch */
	173	uint32_t auth_type_failures; /authentication-type-fails /
	174	uint32_t auth_failures; /* authentication-fails */
d62a17ae	175
1ee746d9	176	uint32_t snmp_id; /* Circuit id in snmp */
	177
	178	uint32_t snmp_adj_idx_gen; /* Create unique id for adjacency on creation
	179	*/
	180	struct list snmp_adj_list; / List in id order */
	181
96244aca	182	QOBJ_FIELDS;
eb5d44eb	183	};
96244aca	184	DECLARE_QOBJ_TYPE(isis_circuit);
eb5d44eb	185
d62a17ae	186	void isis_circuit_init(void);
bcf22081	187	struct isis_circuit isis_circuit_new(struct interface ifp, const char *tag);
d62a17ae	188	void isis_circuit_del(struct isis_circuit *circuit);
d62a17ae	189	struct isis_circuit circuit_scan_by_ifp(struct interface ifp);
	190	void isis_circuit_configure(struct isis_circuit *circuit,
	191	struct isis_area *area);
	192	void isis_circuit_deconfigure(struct isis_circuit *circuit,
	193	struct isis_area *area);
	194	void isis_circuit_if_add(struct isis_circuit circuit, struct interface ifp);
	195	void isis_circuit_if_del(struct isis_circuit circuit, struct interface ifp);
	196	void isis_circuit_if_bind(struct isis_circuit circuit, struct interface ifp);
	197	void isis_circuit_if_unbind(struct isis_circuit *circuit,
	198	struct interface *ifp);
	199	void isis_circuit_add_addr(struct isis_circuit *circuit,
	200	struct connected *conn);
	201	void isis_circuit_del_addr(struct isis_circuit *circuit,
	202	struct connected *conn);
	203	void isis_circuit_prepare(struct isis_circuit *circuit);
	204	int isis_circuit_up(struct isis_circuit *circuit);
	205	void isis_circuit_down(struct isis_circuit *);
	206	void circuit_update_nlpids(struct isis_circuit *circuit);
	207	void isis_circuit_print_vty(struct isis_circuit circuit, struct vty vty,
	208	char detail);
b20ccb3a CF	209	size_t isis_circuit_pdu_size(struct isis_circuit *circuit);
b20ccb3a CF	210	void isis_circuit_stream(struct isis_circuit circuit, struct stream *stream);
3f045a08	211
d62a17ae	212	void isis_circuit_af_set(struct isis_circuit *circuit, bool ip_router,
d62a17ae	213	bool ipv6_router);
64dd3ffe	214	ferr_r isis_circuit_passive_set(struct isis_circuit *circuit, bool passive);
d62a17ae	215	void isis_circuit_is_type_set(struct isis_circuit *circuit, int is_type);
d0820765	216	void isis_circuit_circ_type_set(struct isis_circuit *circuit, int circ_type);
d62a17ae	217
64dd3ffe DL	218	ferr_r isis_circuit_metric_set(struct isis_circuit *circuit, int level,
64dd3ffe DL	219	int metric);
d62a17ae	220
64dd3ffe	221	ferr_r isis_circuit_passwd_unset(struct isis_circuit *circuit);
e28544ed QY	222	ferr_r isis_circuit_passwd_set(struct isis_circuit *circuit,
e28544ed QY	223	uint8_t passwd_type, const char *passwd);
64dd3ffe DL	224	ferr_r isis_circuit_passwd_cleartext_set(struct isis_circuit *circuit,
	225	const char *passwd);
	226	ferr_r isis_circuit_passwd_hmac_md5_set(struct isis_circuit *circuit,
	227	const char *passwd);
d62a17ae	228
	229	int isis_circuit_mt_enabled_set(struct isis_circuit *circuit, uint16_t mtid,
	230	bool enabled);
064f4896	231
05e4ec37	232	#ifdef FABRICD
d56afe53 CF	233	DECLARE_HOOK(isis_circuit_config_write,
d56afe53 CF	234	(struct isis_circuit circuit, struct vty vty),
8451921b	235	(circuit, vty));
05e4ec37	236	#endif
d56afe53	237
2bec0447	238	DECLARE_HOOK(isis_circuit_add_addr_hook, (struct isis_circuit *circuit),
8451921b	239	(circuit));
2bec0447	240
e2b5b7d6 IR	241	DECLARE_HOOK(isis_circuit_new_hook, (struct isis_circuit *circuit), (circuit));
	242	DECLARE_HOOK(isis_circuit_del_hook, (struct isis_circuit *circuit), (circuit));
	243
eb5d44eb	244	#endif /* _ZEBRA_ISIS_CIRCUIT_H */