[mirror_frr.git] / nhrpd / nhrpd.h

/* NHRP daemon internal structures and function prototypes
 * Copyright (c) 2014-2015 Timo Teräs
 *
 * This file is free software: you may copy, redistribute and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 */

#ifndef NHRPD_H
#define NHRPD_H

#include "list.h"

#include "zbuf.h"
#include "zclient.h"
#include "debug.h"
#include "memory.h"

DECLARE_MGROUP(NHRPD)

#define NHRPD_DEFAULT_HOLDTIME	7200

#define NHRP_VTY_PORT		2610
#define NHRP_DEFAULT_CONFIG	"nhrpd.conf"

extern struct thread_master *master;

enum { NHRP_OK = 0,
       NHRP_ERR_FAIL,
       NHRP_ERR_NO_MEMORY,
       NHRP_ERR_UNSUPPORTED_INTERFACE,
       NHRP_ERR_NHRP_NOT_ENABLED,
       NHRP_ERR_ENTRY_EXISTS,
       NHRP_ERR_ENTRY_NOT_FOUND,
       NHRP_ERR_PROTOCOL_ADDRESS_MISMATCH,
       __NHRP_ERR_MAX };
#define NHRP_ERR_MAX		(__NHRP_ERR_MAX - 1)

struct notifier_block;

typedef void (*notifier_fn_t)(struct notifier_block *, unsigned long);

struct notifier_block {
	struct list_head notifier_entry;
	notifier_fn_t action;
};

struct notifier_list {
	struct list_head notifier_head;
};

#define NOTIFIER_LIST_INITIALIZER(l)                                           \
	{                                                                      \
		.notifier_head = LIST_INITIALIZER((l)->notifier_head)          \
	}

static inline void notifier_init(struct notifier_list *l)
{
	list_init(&l->notifier_head);
}

static inline void notifier_add(struct notifier_block *n,
				struct notifier_list *l, notifier_fn_t action)
{
	n->action = action;
	list_add_tail(&n->notifier_entry, &l->notifier_head);
}

static inline void notifier_del(struct notifier_block *n)
{
	list_del(&n->notifier_entry);
}

static inline void notifier_call(struct notifier_list *l, int cmd)
{
	struct notifier_block *n, *nn;
	list_for_each_entry_safe(n, nn, &l->notifier_head, notifier_entry)
		n->action(n, cmd);
}

static inline int notifier_active(struct notifier_list *l)
{
	return !list_empty(&l->notifier_head);
}

struct resolver_query {
	void (*callback)(struct resolver_query *, int n, union sockunion *);
};

void resolver_init(void);
void resolver_resolve(struct resolver_query *query, int af,
		      const char *hostname, void (*cb)(struct resolver_query *,
						       int, union sockunion *));

void nhrp_zebra_init(void);
void nhrp_zebra_terminate(void);

struct zbuf;
struct nhrp_vc;
struct nhrp_cache;
struct nhrp_nhs;
struct nhrp_interface;

#define MAX_ID_LENGTH			64
#define MAX_CERT_LENGTH			2048

enum nhrp_notify_type {
	NOTIFY_INTERFACE_UP,
	NOTIFY_INTERFACE_DOWN,
	NOTIFY_INTERFACE_CHANGED,
	NOTIFY_INTERFACE_ADDRESS_CHANGED,
	NOTIFY_INTERFACE_NBMA_CHANGED,
	NOTIFY_INTERFACE_MTU_CHANGED,

	NOTIFY_VC_IPSEC_CHANGED,
	NOTIFY_VC_IPSEC_UPDATE_NBMA,

	NOTIFY_PEER_UP,
	NOTIFY_PEER_DOWN,
	NOTIFY_PEER_IFCONFIG_CHANGED,
	NOTIFY_PEER_MTU_CHANGED,
	NOTIFY_PEER_NBMA_CHANGING,

	NOTIFY_CACHE_UP,
	NOTIFY_CACHE_DOWN,
	NOTIFY_CACHE_DELETE,
	NOTIFY_CACHE_USED,
	NOTIFY_CACHE_BINDING_CHANGE,
};

struct nhrp_vc {
	struct notifier_list notifier_list;
	uint8_t ipsec;
	uint8_t updating;
	uint8_t abort_migration;

	struct nhrp_vc_peer {
		union sockunion nbma;
		char id[MAX_ID_LENGTH];
		uint16_t certlen;
		uint8_t cert[MAX_CERT_LENGTH];
	} local, remote;
};

enum nhrp_route_type {
	NHRP_ROUTE_BLACKHOLE,
	NHRP_ROUTE_LOCAL,
	NHRP_ROUTE_NBMA_NEXTHOP,
	NHRP_ROUTE_OFF_NBMA,
};

struct nhrp_peer {
	unsigned int ref;
	unsigned online : 1;
	unsigned requested : 1;
	unsigned fallback_requested : 1;
	unsigned prio : 1;
	struct notifier_list notifier_list;
	struct interface *ifp;
	struct nhrp_vc *vc;
	struct thread *t_fallback;
	struct notifier_block vc_notifier, ifp_notifier;
};

struct nhrp_packet_parser {
	struct interface *ifp;
	struct nhrp_afi_data *if_ad;
	struct nhrp_peer *peer;
	struct zbuf *pkt;
	struct zbuf payload;
	struct zbuf extensions;
	struct nhrp_packet_header *hdr;
	enum nhrp_route_type route_type;
	struct prefix route_prefix;
	union sockunion src_nbma, src_proto, dst_proto;
};

struct nhrp_reqid_pool {
	struct hash *reqid_hash;
	uint32_t next_request_id;
};

struct nhrp_reqid {
	uint32_t request_id;
	void (*cb)(struct nhrp_reqid *, void *);
};

extern struct nhrp_reqid_pool nhrp_packet_reqid;
extern struct nhrp_reqid_pool nhrp_event_reqid;

enum nhrp_cache_type {
	NHRP_CACHE_INVALID = 0,
	NHRP_CACHE_INCOMPLETE,
	NHRP_CACHE_NEGATIVE,
	NHRP_CACHE_CACHED,
	NHRP_CACHE_DYNAMIC,
	NHRP_CACHE_NHS,
	NHRP_CACHE_STATIC,
	NHRP_CACHE_LOCAL,
	NHRP_CACHE_NUM_TYPES
};

extern const char *const nhrp_cache_type_str[];
extern unsigned long nhrp_cache_counts[NHRP_CACHE_NUM_TYPES];

struct nhrp_cache {
	struct interface *ifp;
	union sockunion remote_addr;

	unsigned map : 1;
	unsigned used : 1;
	unsigned route_installed : 1;
	unsigned nhrp_route_installed : 1;

	struct notifier_block peer_notifier;
	struct notifier_block newpeer_notifier;
	struct notifier_list notifier_list;
	struct nhrp_reqid eventid;
	struct thread *t_timeout;
	struct thread *t_auth;

	struct {
		enum nhrp_cache_type type;
		union sockunion remote_nbma_natoa;
		struct nhrp_peer *peer;
		time_t expires;
		uint32_t mtu;
	} cur, new;
};

struct nhrp_shortcut {
	struct prefix *p;
	union sockunion addr;

	struct nhrp_reqid reqid;
	struct thread *t_timer;

	enum nhrp_cache_type type;
	unsigned int holding_time;
	unsigned route_installed : 1;
	unsigned expiring : 1;

	struct nhrp_cache *cache;
	struct notifier_block cache_notifier;
};

struct nhrp_nhs {
	struct interface *ifp;
	struct list_head nhslist_entry;

	unsigned hub : 1;
	afi_t afi;
	union sockunion proto_addr;
	const char *nbma_fqdn; /* IP-address or FQDN */

	struct thread *t_resolve;
	struct resolver_query dns_resolve;
	struct list_head reglist_head;
};

struct nhrp_registration {
	struct list_head reglist_entry;
	struct thread *t_register;
	struct nhrp_nhs *nhs;
	struct nhrp_reqid reqid;
	unsigned int timeout;
	unsigned mark : 1;
	union sockunion proto_addr;
	struct nhrp_peer *peer;
	struct notifier_block peer_notifier;
};

#define NHRP_IFF_SHORTCUT		0x0001
#define NHRP_IFF_REDIRECT		0x0002
#define NHRP_IFF_REG_NO_UNIQUE		0x0100

struct nhrp_interface {
	struct interface *ifp;

	unsigned enabled : 1;

	char *ipsec_profile, *ipsec_fallback_profile, *source;
	union sockunion nbma;
	union sockunion nat_nbma;
	unsigned int linkidx;
	uint32_t grekey;

	struct hash *peer_hash;
	struct hash *cache_hash;

	struct notifier_list notifier_list;

	struct interface *nbmaifp;
	struct notifier_block nbmanifp_notifier;

	struct nhrp_afi_data {
		unsigned flags;
		unsigned short configured : 1;
		union sockunion addr;
		uint32_t network_id;
		short configured_mtu;
		unsigned short mtu;
		unsigned int holdtime;
		struct list_head nhslist_head;
	} afi[AFI_MAX];
};

extern struct zebra_privs_t nhrpd_privs;

int sock_open_unix(const char *path);

void nhrp_interface_init(void);
void nhrp_interface_update(struct interface *ifp);
void nhrp_interface_update_mtu(struct interface *ifp, afi_t afi);

int nhrp_interface_add(int cmd, struct zclient *client, zebra_size_t length,
		       vrf_id_t vrf_id);
int nhrp_interface_delete(int cmd, struct zclient *client, zebra_size_t length,
			  vrf_id_t vrf_id);
int nhrp_interface_up(int cmd, struct zclient *client, zebra_size_t length,
		      vrf_id_t vrf_id);
int nhrp_interface_down(int cmd, struct zclient *client, zebra_size_t length,
			vrf_id_t vrf_id);
int nhrp_interface_address_add(int cmd, struct zclient *client,
			       zebra_size_t length, vrf_id_t vrf_id);
int nhrp_interface_address_delete(int cmd, struct zclient *client,
				  zebra_size_t length, vrf_id_t vrf_id);

void nhrp_interface_notify_add(struct interface *ifp, struct notifier_block *n,
			       notifier_fn_t fn);
void nhrp_interface_notify_del(struct interface *ifp, struct notifier_block *n);
void nhrp_interface_set_protection(struct interface *ifp, const char *profile,
				   const char *fallback_profile);
void nhrp_interface_set_source(struct interface *ifp, const char *ifname);

int nhrp_nhs_add(struct interface *ifp, afi_t afi, union sockunion *proto_addr,
		 const char *nbma_fqdn);
int nhrp_nhs_del(struct interface *ifp, afi_t afi, union sockunion *proto_addr,
		 const char *nbma_fqdn);
int nhrp_nhs_free(struct nhrp_nhs *nhs);
void nhrp_nhs_terminate(void);
void nhrp_nhs_foreach(struct interface *ifp, afi_t afi,
		      void (*cb)(struct nhrp_nhs *, struct nhrp_registration *,
				 void *),
		      void *ctx);

void nhrp_route_update_nhrp(const struct prefix *p, struct interface *ifp);
void nhrp_route_announce(int add, enum nhrp_cache_type type,
			 const struct prefix *p, struct interface *ifp,
			 const union sockunion *nexthop, uint32_t mtu);
int nhrp_route_read(int command, struct zclient *zclient, zebra_size_t length,
		    vrf_id_t vrf_id);
int nhrp_route_get_nexthop(const union sockunion *addr, struct prefix *p,
			   union sockunion *via, struct interface **ifp);
enum nhrp_route_type nhrp_route_address(struct interface *in_ifp,
					union sockunion *addr, struct prefix *p,
					struct nhrp_peer **peer);

void nhrp_config_init(void);

void nhrp_shortcut_init(void);
void nhrp_shortcut_terminate(void);
void nhrp_shortcut_initiate(union sockunion *addr);
void nhrp_shortcut_foreach(afi_t afi,
			   void (*cb)(struct nhrp_shortcut *, void *),
			   void *ctx);
void nhrp_shortcut_purge(struct nhrp_shortcut *s, int force);
void nhrp_shortcut_prefix_change(const struct prefix *p, int deleted);

struct nhrp_cache *nhrp_cache_get(struct interface *ifp,
				  union sockunion *remote_addr, int create);
void nhrp_cache_foreach(struct interface *ifp,
			void (*cb)(struct nhrp_cache *, void *), void *ctx);
void nhrp_cache_set_used(struct nhrp_cache *, int);
int nhrp_cache_update_binding(struct nhrp_cache *, enum nhrp_cache_type type,
			      int holding_time, struct nhrp_peer *p,
			      uint32_t mtu, union sockunion *nbma_natoa);
void nhrp_cache_notify_add(struct nhrp_cache *c, struct notifier_block *,
			   notifier_fn_t);
void nhrp_cache_notify_del(struct nhrp_cache *c, struct notifier_block *);

void nhrp_vc_init(void);
void nhrp_vc_terminate(void);
struct nhrp_vc *nhrp_vc_get(const union sockunion *src,
			    const union sockunion *dst, int create);
int nhrp_vc_ipsec_updown(uint32_t child_id, struct nhrp_vc *vc);
void nhrp_vc_notify_add(struct nhrp_vc *, struct notifier_block *,
			notifier_fn_t);
void nhrp_vc_notify_del(struct nhrp_vc *, struct notifier_block *);
void nhrp_vc_foreach(void (*cb)(struct nhrp_vc *, void *), void *ctx);
void nhrp_vc_reset(void);

void vici_init(void);
void vici_terminate(void);
void vici_request_vc(const char *profile, union sockunion *src,
		     union sockunion *dst, int prio);

extern const char *nhrp_event_socket_path;

void evmgr_init(void);
void evmgr_terminate(void);
void evmgr_set_socket(const char *socket);
void evmgr_notify(const char *name, struct nhrp_cache *c,
		  void (*cb)(struct nhrp_reqid *, void *));

struct nhrp_packet_header *nhrp_packet_push(struct zbuf *zb, uint8_t type,
					    const union sockunion *src_nbma,
					    const union sockunion *src_proto,
					    const union sockunion *dst_proto);
void nhrp_packet_complete(struct zbuf *zb, struct nhrp_packet_header *hdr);
uint16_t nhrp_packet_calculate_checksum(const uint8_t *pdu, uint16_t len);

struct nhrp_packet_header *nhrp_packet_pull(struct zbuf *zb,
					    union sockunion *src_nbma,
					    union sockunion *src_proto,
					    union sockunion *dst_proto);

struct nhrp_cie_header *nhrp_cie_push(struct zbuf *zb, uint8_t code,
				      const union sockunion *nbma,
				      const union sockunion *proto);
struct nhrp_cie_header *nhrp_cie_pull(struct zbuf *zb,
				      struct nhrp_packet_header *hdr,
				      union sockunion *nbma,
				      union sockunion *proto);

struct nhrp_extension_header *
nhrp_ext_push(struct zbuf *zb, struct nhrp_packet_header *hdr, uint16_t type);
void nhrp_ext_complete(struct zbuf *zb, struct nhrp_extension_header *ext);
struct nhrp_extension_header *nhrp_ext_pull(struct zbuf *zb,
					    struct zbuf *payload);
void nhrp_ext_request(struct zbuf *zb, struct nhrp_packet_header *hdr,
		      struct interface *);
int nhrp_ext_reply(struct zbuf *zb, struct nhrp_packet_header *hdr,
		   struct interface *ifp, struct nhrp_extension_header *ext,
		   struct zbuf *extpayload);

uint32_t nhrp_reqid_alloc(struct nhrp_reqid_pool *, struct nhrp_reqid *r,
			  void (*cb)(struct nhrp_reqid *, void *));
void nhrp_reqid_free(struct nhrp_reqid_pool *, struct nhrp_reqid *r);
struct nhrp_reqid *nhrp_reqid_lookup(struct nhrp_reqid_pool *, uint32_t reqid);

int nhrp_packet_init(void);

struct nhrp_peer *nhrp_peer_get(struct interface *ifp,
				const union sockunion *remote_nbma);
struct nhrp_peer *nhrp_peer_ref(struct nhrp_peer *p);
void nhrp_peer_unref(struct nhrp_peer *p);
int nhrp_peer_check(struct nhrp_peer *p, int establish);
void nhrp_peer_notify_add(struct nhrp_peer *p, struct notifier_block *,
			  notifier_fn_t);
void nhrp_peer_notify_del(struct nhrp_peer *p, struct notifier_block *);
void nhrp_peer_recv(struct nhrp_peer *p, struct zbuf *zb);
void nhrp_peer_send(struct nhrp_peer *p, struct zbuf *zb);
void nhrp_peer_send_indication(struct interface *ifp, uint16_t, struct zbuf *);

#endif
Commit	Line	Data
2fb975da TT	1	/* NHRP daemon internal structures and function prototypes
	2	* Copyright (c) 2014-2015 Timo Teräs
	3	*
	4	* This file is free software: you may copy, redistribute and/or modify
	5	* it under the terms of the GNU General Public License as published by
	6	* the Free Software Foundation, either version 2 of the License, or
	7	* (at your option) any later version.
	8	*/
	9
	10	#ifndef NHRPD_H
	11	#define NHRPD_H
	12
	13	#include "list.h"
	14
	15	#include "zbuf.h"
	16	#include "zclient.h"
	17	#include "debug.h"
819dc8bb DL	18	#include "memory.h"
	19
	20	DECLARE_MGROUP(NHRPD)
2fb975da TT	21
	22	#define NHRPD_DEFAULT_HOLDTIME 7200
	23
442deed8	24	#define NHRP_VTY_PORT 2610
2fb975da TT	25	#define NHRP_DEFAULT_CONFIG "nhrpd.conf"
	26
	27	extern struct thread_master *master;
	28
996c9314 LB	29	enum { NHRP_OK = 0,
	30	NHRP_ERR_FAIL,
	31	NHRP_ERR_NO_MEMORY,
	32	NHRP_ERR_UNSUPPORTED_INTERFACE,
	33	NHRP_ERR_NHRP_NOT_ENABLED,
	34	NHRP_ERR_ENTRY_EXISTS,
	35	NHRP_ERR_ENTRY_NOT_FOUND,
	36	NHRP_ERR_PROTOCOL_ADDRESS_MISMATCH,
	37	__NHRP_ERR_MAX };
6c8ca260	38	#define NHRP_ERR_MAX (__NHRP_ERR_MAX - 1)
2fb975da TT	39
	40	struct notifier_block;
	41
	42	typedef void (notifier_fn_t)(struct notifier_block , unsigned long);
	43
	44	struct notifier_block {
	45	struct list_head notifier_entry;
	46	notifier_fn_t action;
	47	};
	48
	49	struct notifier_list {
	50	struct list_head notifier_head;
	51	};
	52
996c9314 LB	53	#define NOTIFIER_LIST_INITIALIZER(l) \
	54	{ \
	55	.notifier_head = LIST_INITIALIZER((l)->notifier_head) \
	56	}
2fb975da TT	57
	58	static inline void notifier_init(struct notifier_list *l)
	59	{
	60	list_init(&l->notifier_head);
	61	}
	62
996c9314 LB	63	static inline void notifier_add(struct notifier_block *n,
996c9314 LB	64	struct notifier_list *l, notifier_fn_t action)
2fb975da TT	65	{
	66	n->action = action;
	67	list_add_tail(&n->notifier_entry, &l->notifier_head);
	68	}
	69
	70	static inline void notifier_del(struct notifier_block *n)
	71	{
	72	list_del(&n->notifier_entry);
	73	}
	74
	75	static inline void notifier_call(struct notifier_list *l, int cmd)
	76	{
	77	struct notifier_block n, nn;
	78	list_for_each_entry_safe(n, nn, &l->notifier_head, notifier_entry)
	79	n->action(n, cmd);
	80	}
	81
	82	static inline int notifier_active(struct notifier_list *l)
	83	{
	84	return !list_empty(&l->notifier_head);
	85	}
	86
	87	struct resolver_query {
	88	void (callback)(struct resolver_query , int n, union sockunion *);
	89	};
	90
	91	void resolver_init(void);
996c9314 LB	92	void resolver_resolve(struct resolver_query *query, int af,
	93	const char hostname, void (cb)(struct resolver_query *,
	94	int, union sockunion *));
2fb975da TT	95
	96	void nhrp_zebra_init(void);
	97	void nhrp_zebra_terminate(void);
	98
	99	struct zbuf;
	100	struct nhrp_vc;
	101	struct nhrp_cache;
	102	struct nhrp_nhs;
	103	struct nhrp_interface;
	104
	105	#define MAX_ID_LENGTH 64
	106	#define MAX_CERT_LENGTH 2048
	107
	108	enum nhrp_notify_type {
	109	NOTIFY_INTERFACE_UP,
	110	NOTIFY_INTERFACE_DOWN,
	111	NOTIFY_INTERFACE_CHANGED,
	112	NOTIFY_INTERFACE_ADDRESS_CHANGED,
	113	NOTIFY_INTERFACE_NBMA_CHANGED,
	114	NOTIFY_INTERFACE_MTU_CHANGED,
	115
	116	NOTIFY_VC_IPSEC_CHANGED,
	117	NOTIFY_VC_IPSEC_UPDATE_NBMA,
	118
	119	NOTIFY_PEER_UP,
	120	NOTIFY_PEER_DOWN,
	121	NOTIFY_PEER_IFCONFIG_CHANGED,
	122	NOTIFY_PEER_MTU_CHANGED,
	123	NOTIFY_PEER_NBMA_CHANGING,
	124
	125	NOTIFY_CACHE_UP,
	126	NOTIFY_CACHE_DOWN,
	127	NOTIFY_CACHE_DELETE,
	128	NOTIFY_CACHE_USED,
	129	NOTIFY_CACHE_BINDING_CHANGE,
	130	};
	131
	132	struct nhrp_vc {
	133	struct notifier_list notifier_list;
	134	uint8_t ipsec;
	135	uint8_t updating;
	136	uint8_t abort_migration;
	137
	138	struct nhrp_vc_peer {
	139	union sockunion nbma;
	140	char id[MAX_ID_LENGTH];
	141	uint16_t certlen;
	142	uint8_t cert[MAX_CERT_LENGTH];
	143	} local, remote;
	144	};
	145
	146	enum nhrp_route_type {
	147	NHRP_ROUTE_BLACKHOLE,
	148	NHRP_ROUTE_LOCAL,
	149	NHRP_ROUTE_NBMA_NEXTHOP,
	150	NHRP_ROUTE_OFF_NBMA,
	151	};
	152
	153	struct nhrp_peer {
	154	unsigned int ref;
	155	unsigned online : 1;
	156	unsigned requested : 1;
	157	unsigned fallback_requested : 1;
	158	unsigned prio : 1;
159	struct notifier_list notifier_list;
160	struct interface *ifp;
161	struct nhrp_vc *vc;
162	struct thread *t_fallback;
163	struct notifier_block vc_notifier, ifp_notifier;
164	};
165
166	struct nhrp_packet_parser {
167	struct interface *ifp;
168	struct nhrp_afi_data *if_ad;
169	struct nhrp_peer *peer;
170	struct zbuf *pkt;
171	struct zbuf payload;
172	struct zbuf extensions;
173	struct nhrp_packet_header *hdr;
174	enum nhrp_route_type route_type;
175	struct prefix route_prefix;
176	union sockunion src_nbma, src_proto, dst_proto;
177	};
178
179	struct nhrp_reqid_pool {
180	struct hash *reqid_hash;
181	uint32_t next_request_id;
182	};
183
184	struct nhrp_reqid {
185	uint32_t request_id;
186	void (cb)(struct nhrp_reqid , void *);
187	};
188
189	extern struct nhrp_reqid_pool nhrp_packet_reqid;
190	extern struct nhrp_reqid_pool nhrp_event_reqid;
191
192	enum nhrp_cache_type {
193	NHRP_CACHE_INVALID = 0,
194	NHRP_CACHE_INCOMPLETE,
195	NHRP_CACHE_NEGATIVE,
196	NHRP_CACHE_CACHED,
197	NHRP_CACHE_DYNAMIC,
198	NHRP_CACHE_NHS,
199	NHRP_CACHE_STATIC,
200	NHRP_CACHE_LOCAL,
201	NHRP_CACHE_NUM_TYPES
202	};
203
996c9314	204	extern const char *const nhrp_cache_type_str[];
2fb975da TT	205	extern unsigned long nhrp_cache_counts[NHRP_CACHE_NUM_TYPES];
	206
	207	struct nhrp_cache {
	208	struct interface *ifp;
	209	union sockunion remote_addr;
	210
	211	unsigned map : 1;
	212	unsigned used : 1;
	213	unsigned route_installed : 1;
	214	unsigned nhrp_route_installed : 1;
	215
	216	struct notifier_block peer_notifier;
	217	struct notifier_block newpeer_notifier;
	218	struct notifier_list notifier_list;
	219	struct nhrp_reqid eventid;
	220	struct thread *t_timeout;
	221	struct thread *t_auth;
	222
	223	struct {
	224	enum nhrp_cache_type type;
	225	union sockunion remote_nbma_natoa;
	226	struct nhrp_peer *peer;
	227	time_t expires;
	228	uint32_t mtu;
	229	} cur, new;
	230	};
	231
	232	struct nhrp_shortcut {
	233	struct prefix *p;
	234	union sockunion addr;
	235
	236	struct nhrp_reqid reqid;
	237	struct thread *t_timer;
	238
	239	enum nhrp_cache_type type;
	240	unsigned int holding_time;
	241	unsigned route_installed : 1;
	242	unsigned expiring : 1;
	243
	244	struct nhrp_cache *cache;
	245	struct notifier_block cache_notifier;
	246	};
	247
	248	struct nhrp_nhs {
	249	struct interface *ifp;
	250	struct list_head nhslist_entry;
	251
	252	unsigned hub : 1;
	253	afi_t afi;
	254	union sockunion proto_addr;
996c9314	255	const char nbma_fqdn; / IP-address or FQDN */
2fb975da TT	256
	257	struct thread *t_resolve;
	258	struct resolver_query dns_resolve;
	259	struct list_head reglist_head;
	260	};
	261
0ca036b4 TT	262	struct nhrp_registration {
	263	struct list_head reglist_entry;
	264	struct thread *t_register;
	265	struct nhrp_nhs *nhs;
	266	struct nhrp_reqid reqid;
	267	unsigned int timeout;
	268	unsigned mark : 1;
	269	union sockunion proto_addr;
	270	struct nhrp_peer *peer;
	271	struct notifier_block peer_notifier;
	272	};
	273
2fb975da TT	274	#define NHRP_IFF_SHORTCUT 0x0001
	275	#define NHRP_IFF_REDIRECT 0x0002
	276	#define NHRP_IFF_REG_NO_UNIQUE 0x0100
	277
	278	struct nhrp_interface {
	279	struct interface *ifp;
	280
	281	unsigned enabled : 1;
	282
	283	char ipsec_profile, ipsec_fallback_profile, *source;
	284	union sockunion nbma;
	285	union sockunion nat_nbma;
	286	unsigned int linkidx;
	287	uint32_t grekey;
	288
	289	struct hash *peer_hash;
	290	struct hash *cache_hash;
	291
	292	struct notifier_list notifier_list;
	293
	294	struct interface *nbmaifp;
	295	struct notifier_block nbmanifp_notifier;
	296
	297	struct nhrp_afi_data {
	298	unsigned flags;
	299	unsigned short configured : 1;
	300	union sockunion addr;
	301	uint32_t network_id;
	302	short configured_mtu;
	303	unsigned short mtu;
	304	unsigned int holdtime;
	305	struct list_head nhslist_head;
	306	} afi[AFI_MAX];
	307	};
	308
26efbc7b DS	309	extern struct zebra_privs_t nhrpd_privs;
26efbc7b DS	310
2fb975da TT	311	int sock_open_unix(const char *path);
	312
	313	void nhrp_interface_init(void);
	314	void nhrp_interface_update(struct interface *ifp);
	315	void nhrp_interface_update_mtu(struct interface *ifp, afi_t afi);
	316
996c9314 LB	317	int nhrp_interface_add(int cmd, struct zclient *client, zebra_size_t length,
	318	vrf_id_t vrf_id);
	319	int nhrp_interface_delete(int cmd, struct zclient *client, zebra_size_t length,
	320	vrf_id_t vrf_id);
	321	int nhrp_interface_up(int cmd, struct zclient *client, zebra_size_t length,
	322	vrf_id_t vrf_id);
	323	int nhrp_interface_down(int cmd, struct zclient *client, zebra_size_t length,
	324	vrf_id_t vrf_id);
	325	int nhrp_interface_address_add(int cmd, struct zclient *client,
	326	zebra_size_t length, vrf_id_t vrf_id);
	327	int nhrp_interface_address_delete(int cmd, struct zclient *client,
	328	zebra_size_t length, vrf_id_t vrf_id);
	329
	330	void nhrp_interface_notify_add(struct interface ifp, struct notifier_block n,
	331	notifier_fn_t fn);
2fb975da	332	void nhrp_interface_notify_del(struct interface ifp, struct notifier_block n);
996c9314 LB	333	void nhrp_interface_set_protection(struct interface ifp, const char profile,
996c9314 LB	334	const char *fallback_profile);
2fb975da TT	335	void nhrp_interface_set_source(struct interface ifp, const char ifname);
2fb975da TT	336
996c9314 LB	337	int nhrp_nhs_add(struct interface ifp, afi_t afi, union sockunion proto_addr,
	338	const char *nbma_fqdn);
	339	int nhrp_nhs_del(struct interface ifp, afi_t afi, union sockunion proto_addr,
	340	const char *nbma_fqdn);
2fb975da TT	341	int nhrp_nhs_free(struct nhrp_nhs *nhs);
2fb975da TT	342	void nhrp_nhs_terminate(void);
996c9314 LB	343	void nhrp_nhs_foreach(struct interface *ifp, afi_t afi,
	344	void (cb)(struct nhrp_nhs , struct nhrp_registration *,
	345	void *),
	346	void *ctx);
2fb975da TT	347
2fb975da TT	348	void nhrp_route_update_nhrp(const struct prefix p, struct interface ifp);
996c9314 LB	349	void nhrp_route_announce(int add, enum nhrp_cache_type type,
	350	const struct prefix p, struct interface ifp,
	351	const union sockunion *nexthop, uint32_t mtu);
	352	int nhrp_route_read(int command, struct zclient *zclient, zebra_size_t length,
	353	vrf_id_t vrf_id);
	354	int nhrp_route_get_nexthop(const union sockunion addr, struct prefix p,
	355	union sockunion via, struct interface *ifp);
	356	enum nhrp_route_type nhrp_route_address(struct interface *in_ifp,
	357	union sockunion addr, struct prefix p,
	358	struct nhrp_peer **peer);
2fb975da TT	359
	360	void nhrp_config_init(void);
	361
	362	void nhrp_shortcut_init(void);
	363	void nhrp_shortcut_terminate(void);
	364	void nhrp_shortcut_initiate(union sockunion *addr);
996c9314 LB	365	void nhrp_shortcut_foreach(afi_t afi,
	366	void (cb)(struct nhrp_shortcut , void *),
	367	void *ctx);
2fb975da TT	368	void nhrp_shortcut_purge(struct nhrp_shortcut *s, int force);
	369	void nhrp_shortcut_prefix_change(const struct prefix *p, int deleted);
	370
996c9314 LB	371	struct nhrp_cache nhrp_cache_get(struct interface ifp,
	372	union sockunion *remote_addr, int create);
	373	void nhrp_cache_foreach(struct interface *ifp,
	374	void (cb)(struct nhrp_cache , void ), void ctx);
2fb975da	375	void nhrp_cache_set_used(struct nhrp_cache *, int);
996c9314 LB	376	int nhrp_cache_update_binding(struct nhrp_cache *, enum nhrp_cache_type type,
	377	int holding_time, struct nhrp_peer *p,
	378	uint32_t mtu, union sockunion *nbma_natoa);
	379	void nhrp_cache_notify_add(struct nhrp_cache c, struct notifier_block ,
	380	notifier_fn_t);
2fb975da TT	381	void nhrp_cache_notify_del(struct nhrp_cache c, struct notifier_block );
	382
	383	void nhrp_vc_init(void);
	384	void nhrp_vc_terminate(void);
996c9314 LB	385	struct nhrp_vc nhrp_vc_get(const union sockunion src,
996c9314 LB	386	const union sockunion *dst, int create);
2fb975da	387	int nhrp_vc_ipsec_updown(uint32_t child_id, struct nhrp_vc *vc);
996c9314 LB	388	void nhrp_vc_notify_add(struct nhrp_vc , struct notifier_block ,
996c9314 LB	389	notifier_fn_t);
2fb975da TT	390	void nhrp_vc_notify_del(struct nhrp_vc , struct notifier_block );
	391	void nhrp_vc_foreach(void (cb)(struct nhrp_vc , void ), void ctx);
	392	void nhrp_vc_reset(void);
	393
	394	void vici_init(void);
	395	void vici_terminate(void);
996c9314 LB	396	void vici_request_vc(const char profile, union sockunion src,
996c9314 LB	397	union sockunion *dst, int prio);
2fb975da TT	398
	399	extern const char *nhrp_event_socket_path;
	400
	401	void evmgr_init(void);
	402	void evmgr_terminate(void);
	403	void evmgr_set_socket(const char *socket);
996c9314 LB	404	void evmgr_notify(const char name, struct nhrp_cache c,
996c9314 LB	405	void (cb)(struct nhrp_reqid , void *));
2fb975da	406
996c9314 LB	407	struct nhrp_packet_header nhrp_packet_push(struct zbuf zb, uint8_t type,
	408	const union sockunion *src_nbma,
	409	const union sockunion *src_proto,
	410	const union sockunion *dst_proto);
2fb975da TT	411	void nhrp_packet_complete(struct zbuf zb, struct nhrp_packet_header hdr);
	412	uint16_t nhrp_packet_calculate_checksum(const uint8_t *pdu, uint16_t len);
	413
996c9314 LB	414	struct nhrp_packet_header nhrp_packet_pull(struct zbuf zb,
	415	union sockunion *src_nbma,
	416	union sockunion *src_proto,
	417	union sockunion *dst_proto);
	418
	419	struct nhrp_cie_header nhrp_cie_push(struct zbuf zb, uint8_t code,
	420	const union sockunion *nbma,
	421	const union sockunion *proto);
	422	struct nhrp_cie_header nhrp_cie_pull(struct zbuf zb,
	423	struct nhrp_packet_header *hdr,
	424	union sockunion *nbma,
	425	union sockunion *proto);
	426
	427	struct nhrp_extension_header *
	428	nhrp_ext_push(struct zbuf zb, struct nhrp_packet_header hdr, uint16_t type);
2fb975da	429	void nhrp_ext_complete(struct zbuf zb, struct nhrp_extension_header ext);
996c9314 LB	430	struct nhrp_extension_header nhrp_ext_pull(struct zbuf zb,
	431	struct zbuf *payload);
	432	void nhrp_ext_request(struct zbuf zb, struct nhrp_packet_header hdr,
	433	struct interface *);
	434	int nhrp_ext_reply(struct zbuf zb, struct nhrp_packet_header hdr,
	435	struct interface ifp, struct nhrp_extension_header ext,
	436	struct zbuf *extpayload);
	437
	438	uint32_t nhrp_reqid_alloc(struct nhrp_reqid_pool , struct nhrp_reqid r,
	439	void (cb)(struct nhrp_reqid , void *));
2fb975da TT	440	void nhrp_reqid_free(struct nhrp_reqid_pool , struct nhrp_reqid r);
	441	struct nhrp_reqid nhrp_reqid_lookup(struct nhrp_reqid_pool , uint32_t reqid);
	442
	443	int nhrp_packet_init(void);
	444
996c9314 LB	445	struct nhrp_peer nhrp_peer_get(struct interface ifp,
996c9314 LB	446	const union sockunion *remote_nbma);
2fb975da TT	447	struct nhrp_peer nhrp_peer_ref(struct nhrp_peer p);
	448	void nhrp_peer_unref(struct nhrp_peer *p);
	449	int nhrp_peer_check(struct nhrp_peer *p, int establish);
996c9314 LB	450	void nhrp_peer_notify_add(struct nhrp_peer p, struct notifier_block ,
996c9314 LB	451	notifier_fn_t);
2fb975da TT	452	void nhrp_peer_notify_del(struct nhrp_peer p, struct notifier_block );
	453	void nhrp_peer_recv(struct nhrp_peer p, struct zbuf zb);
	454	void nhrp_peer_send(struct nhrp_peer p, struct zbuf zb);
	455	void nhrp_peer_send_indication(struct interface ifp, uint16_t, struct zbuf );
	456
	457	#endif