[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"
#include "resolver.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);
}

extern struct hash *nhrp_gre_list;

void nhrp_zebra_init(void);
void nhrp_zebra_terminate(void);
void nhrp_send_zebra_configure_arp(struct interface *ifp, int family);
void nhrp_send_zebra_nbr(union sockunion *in,
			 union sockunion *out,
			 struct interface *ifp);

void nhrp_send_zebra_gre_source_set(struct interface *ifp,
				    unsigned int link_idx,
				    vrf_id_t link_vrf_id);

extern int nhrp_send_zebra_gre_request(struct interface *ifp);
extern struct nhrp_gre_info *nhrp_gre_info_alloc(struct nhrp_gre_info *p);

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_INTERFACE_IPSEC_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;
	uint32_t ipsec;
	uint32_t ike_uniqueid;
	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 thread *t_timer;
};

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_config {
	struct interface *ifp;
	union sockunion remote_addr;
	enum nhrp_cache_type type;
	union sockunion nbma;
};

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;
		union sockunion remote_nbma_claimed;
		struct nhrp_peer *peer;
		time_t expires;
		uint32_t mtu;
		int holding_time;
	} 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_multicast {
	struct interface *ifp;
	struct list_head list_entry;
	afi_t afi;
	union sockunion nbma_addr; /* IP-address */
};

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 link_idx;
	unsigned int link_vrf_id;
	uint32_t i_grekey;
	uint32_t o_grekey;

	struct hash *peer_hash;
	struct hash *cache_config_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;
		struct list_head mcastlist_head;
	} afi[AFI_MAX];
};

struct nhrp_gre_info {
	ifindex_t ifindex;
	struct in_addr vtep_ip; /* IFLA_GRE_LOCAL */
	struct in_addr vtep_ip_remote; /* IFLA_GRE_REMOTE */
	uint32_t ikey;
	uint32_t okey;
	ifindex_t ifindex_link; /* Interface index of interface
				 * linked with GRE
				 */
	vrf_id_t vrfid_link;
};

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);
void nhrp_interface_update_nbma(struct interface *ifp,
				struct nhrp_gre_info *gre_info);

int nhrp_interface_add(ZAPI_CALLBACK_ARGS);
int nhrp_interface_delete(ZAPI_CALLBACK_ARGS);
int nhrp_interface_up(ZAPI_CALLBACK_ARGS);
int nhrp_interface_down(ZAPI_CALLBACK_ARGS);
int nhrp_interface_address_add(ZAPI_CALLBACK_ARGS);
int nhrp_interface_address_delete(ZAPI_CALLBACK_ARGS);
void nhrp_neighbor_operation(ZAPI_CALLBACK_ARGS);
void nhrp_gre_update(ZAPI_CALLBACK_ARGS);

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);
extern int nhrp_ifp_create(struct interface *ifp);
extern int nhrp_ifp_up(struct interface *ifp);
extern int nhrp_ifp_down(struct interface *ifp);
extern int nhrp_ifp_destroy(struct interface *ifp);

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_nhs_interface_del(struct interface *ifp);

int nhrp_multicast_add(struct interface *ifp, afi_t afi,
		       union sockunion *nbma_addr);
int nhrp_multicast_del(struct interface *ifp, afi_t afi,
		       union sockunion *nbma_addr);
void nhrp_multicast_interface_del(struct interface *ifp);
void nhrp_multicast_foreach(struct interface *ifp, afi_t afi,
			    void (*cb)(struct nhrp_multicast *, void *),
			    void *ctx);
void netlink_mcast_set_nflog_group(int nlgroup);

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(ZAPI_CALLBACK_ARGS);
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);

void nhrp_cache_interface_del(struct interface *ifp);
void nhrp_cache_config_free(struct nhrp_cache_config *c);
struct nhrp_cache_config *nhrp_cache_config_get(struct interface *ifp,
						union sockunion *remote_addr,
						int create);
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_config_foreach(struct interface *ifp,
			       void (*cb)(struct nhrp_cache_config *, 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,
			      union sockunion *claimed_nbma);
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_terminate_vc_by_profile_name(char *profile_name);
void vici_terminate_vc_by_ike_id(unsigned int ike_id);
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);

void nhrp_peer_interface_del(struct interface *ifp);
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 *);

int nhrp_nhs_match_ip(union sockunion *in_ip, struct nhrp_interface *nifp);

#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	18	#include "memory.h"
fe9e7b71	19	#include "resolver.h"
819dc8bb	20
bf8d3d6a	21	DECLARE_MGROUP(NHRPD);
2fb975da TT	22
	23	#define NHRPD_DEFAULT_HOLDTIME 7200
	24
442deed8	25	#define NHRP_VTY_PORT 2610
2fb975da TT	26	#define NHRP_DEFAULT_CONFIG "nhrpd.conf"
	27
	28	extern struct thread_master *master;
	29
996c9314 LB	30	enum { NHRP_OK = 0,
	31	NHRP_ERR_FAIL,
	32	NHRP_ERR_NO_MEMORY,
	33	NHRP_ERR_UNSUPPORTED_INTERFACE,
	34	NHRP_ERR_NHRP_NOT_ENABLED,
	35	NHRP_ERR_ENTRY_EXISTS,
	36	NHRP_ERR_ENTRY_NOT_FOUND,
	37	NHRP_ERR_PROTOCOL_ADDRESS_MISMATCH,
	38	__NHRP_ERR_MAX };
6c8ca260	39	#define NHRP_ERR_MAX (__NHRP_ERR_MAX - 1)
2fb975da TT	40
	41	struct notifier_block;
	42
	43	typedef void (notifier_fn_t)(struct notifier_block , unsigned long);
	44
	45	struct notifier_block {
	46	struct list_head notifier_entry;
	47	notifier_fn_t action;
	48	};
	49
	50	struct notifier_list {
	51	struct list_head notifier_head;
	52	};
	53
996c9314 LB	54	#define NOTIFIER_LIST_INITIALIZER(l) \
	55	{ \
	56	.notifier_head = LIST_INITIALIZER((l)->notifier_head) \
	57	}
2fb975da TT	58
	59	static inline void notifier_init(struct notifier_list *l)
	60	{
	61	list_init(&l->notifier_head);
	62	}
	63
996c9314 LB	64	static inline void notifier_add(struct notifier_block *n,
996c9314 LB	65	struct notifier_list *l, notifier_fn_t action)
2fb975da TT	66	{
	67	n->action = action;
	68	list_add_tail(&n->notifier_entry, &l->notifier_head);
	69	}
	70
	71	static inline void notifier_del(struct notifier_block *n)
	72	{
	73	list_del(&n->notifier_entry);
	74	}
	75
	76	static inline void notifier_call(struct notifier_list *l, int cmd)
	77	{
	78	struct notifier_block n, nn;
bd2b75a2	79	list_for_each_entry_safe(n, nn, &l->notifier_head, notifier_entry) {
123ea351	80	n->action(n, cmd);
bd2b75a2	81	}
2fb975da TT	82	}
	83
	84	static inline int notifier_active(struct notifier_list *l)
	85	{
	86	return !list_empty(&l->notifier_head);
	87	}
	88
7f48cfa5 PG	89	extern struct hash *nhrp_gre_list;
7f48cfa5 PG	90
2fb975da TT	91	void nhrp_zebra_init(void);
2fb975da TT	92	void nhrp_zebra_terminate(void);
f468a45a	93	void nhrp_send_zebra_configure_arp(struct interface *ifp, int family);
05657ec2 PG	94	void nhrp_send_zebra_nbr(union sockunion *in,
	95	union sockunion *out,
	96	struct interface *ifp);
7f48cfa5 PG	97
	98	void nhrp_send_zebra_gre_source_set(struct interface *ifp,
	99	unsigned int link_idx,
	100	vrf_id_t link_vrf_id);
	101
	102	extern int nhrp_send_zebra_gre_request(struct interface *ifp);
	103	extern struct nhrp_gre_info nhrp_gre_info_alloc(struct nhrp_gre_info p);
	104
2fb975da TT	105	struct zbuf;
	106	struct nhrp_vc;
	107	struct nhrp_cache;
	108	struct nhrp_nhs;
	109	struct nhrp_interface;
	110
	111	#define MAX_ID_LENGTH 64
	112	#define MAX_CERT_LENGTH 2048
	113
	114	enum nhrp_notify_type {
	115	NOTIFY_INTERFACE_UP,
	116	NOTIFY_INTERFACE_DOWN,
	117	NOTIFY_INTERFACE_CHANGED,
	118	NOTIFY_INTERFACE_ADDRESS_CHANGED,
	119	NOTIFY_INTERFACE_NBMA_CHANGED,
	120	NOTIFY_INTERFACE_MTU_CHANGED,
58ef1668	121	NOTIFY_INTERFACE_IPSEC_CHANGED,
2fb975da TT	122
	123	NOTIFY_VC_IPSEC_CHANGED,
	124	NOTIFY_VC_IPSEC_UPDATE_NBMA,
	125
	126	NOTIFY_PEER_UP,
	127	NOTIFY_PEER_DOWN,
	128	NOTIFY_PEER_IFCONFIG_CHANGED,
	129	NOTIFY_PEER_MTU_CHANGED,
	130	NOTIFY_PEER_NBMA_CHANGING,
	131
	132	NOTIFY_CACHE_UP,
	133	NOTIFY_CACHE_DOWN,
	134	NOTIFY_CACHE_DELETE,
	135	NOTIFY_CACHE_USED,
	136	NOTIFY_CACHE_BINDING_CHANGE,
	137	};
	138
	139	struct nhrp_vc {
	140	struct notifier_list notifier_list;
6cfd90f3	141	uint32_t ipsec;
4cbaf956	142	uint32_t ike_uniqueid;
2fb975da TT	143	uint8_t updating;
	144	uint8_t abort_migration;
	145
	146	struct nhrp_vc_peer {
	147	union sockunion nbma;
	148	char id[MAX_ID_LENGTH];
	149	uint16_t certlen;
	150	uint8_t cert[MAX_CERT_LENGTH];
	151	} local, remote;
	152	};
	153
	154	enum nhrp_route_type {
	155	NHRP_ROUTE_BLACKHOLE,
	156	NHRP_ROUTE_LOCAL,
	157	NHRP_ROUTE_NBMA_NEXTHOP,
	158	NHRP_ROUTE_OFF_NBMA,
	159	};
	160
	161	struct nhrp_peer {
	162	unsigned int ref;
	163	unsigned online : 1;
	164	unsigned requested : 1;
	165	unsigned fallback_requested : 1;
	166	unsigned prio : 1;
	167	struct notifier_list notifier_list;
	168	struct interface *ifp;
	169	struct nhrp_vc *vc;
	170	struct thread *t_fallback;
	171	struct notifier_block vc_notifier, ifp_notifier;
bb58f442	172	struct thread *t_timer;
2fb975da TT	173	};
	174
	175	struct nhrp_packet_parser {
	176	struct interface *ifp;
	177	struct nhrp_afi_data *if_ad;
	178	struct nhrp_peer *peer;
	179	struct zbuf *pkt;
	180	struct zbuf payload;
	181	struct zbuf extensions;
	182	struct nhrp_packet_header *hdr;
	183	enum nhrp_route_type route_type;
	184	struct prefix route_prefix;
	185	union sockunion src_nbma, src_proto, dst_proto;
	186	};
	187
	188	struct nhrp_reqid_pool {
	189	struct hash *reqid_hash;
	190	uint32_t next_request_id;
	191	};
	192
	193	struct nhrp_reqid {
	194	uint32_t request_id;
	195	void (cb)(struct nhrp_reqid , void *);
	196	};
	197
	198	extern struct nhrp_reqid_pool nhrp_packet_reqid;
	199	extern struct nhrp_reqid_pool nhrp_event_reqid;
	200
	201	enum nhrp_cache_type {
	202	NHRP_CACHE_INVALID = 0,
	203	NHRP_CACHE_INCOMPLETE,
	204	NHRP_CACHE_NEGATIVE,
	205	NHRP_CACHE_CACHED,
	206	NHRP_CACHE_DYNAMIC,
	207	NHRP_CACHE_NHS,
	208	NHRP_CACHE_STATIC,
	209	NHRP_CACHE_LOCAL,
	210	NHRP_CACHE_NUM_TYPES
	211	};
	212
996c9314	213	extern const char *const nhrp_cache_type_str[];
2fb975da TT	214	extern unsigned long nhrp_cache_counts[NHRP_CACHE_NUM_TYPES];
2fb975da TT	215
fef2ed13 PG	216	struct nhrp_cache_config {
	217	struct interface *ifp;
	218	union sockunion remote_addr;
	219	enum nhrp_cache_type type;
	220	union sockunion nbma;
	221	};
	222
2fb975da TT	223	struct nhrp_cache {
	224	struct interface *ifp;
	225	union sockunion remote_addr;
	226
	227	unsigned map : 1;
	228	unsigned used : 1;
	229	unsigned route_installed : 1;
	230	unsigned nhrp_route_installed : 1;
	231
	232	struct notifier_block peer_notifier;
	233	struct notifier_block newpeer_notifier;
	234	struct notifier_list notifier_list;
	235	struct nhrp_reqid eventid;
	236	struct thread *t_timeout;
	237	struct thread *t_auth;
	238
	239	struct {
	240	enum nhrp_cache_type type;
	241	union sockunion remote_nbma_natoa;
85365e51	242	union sockunion remote_nbma_claimed;
2fb975da TT	243	struct nhrp_peer *peer;
	244	time_t expires;
	245	uint32_t mtu;
bb58f442	246	int holding_time;
2fb975da TT	247	} cur, new;
	248	};
	249
	250	struct nhrp_shortcut {
	251	struct prefix *p;
	252	union sockunion addr;
	253
	254	struct nhrp_reqid reqid;
	255	struct thread *t_timer;
	256
	257	enum nhrp_cache_type type;
	258	unsigned int holding_time;
	259	unsigned route_installed : 1;
	260	unsigned expiring : 1;
	261
	262	struct nhrp_cache *cache;
	263	struct notifier_block cache_notifier;
	264	};
	265
	266	struct nhrp_nhs {
	267	struct interface *ifp;
	268	struct list_head nhslist_entry;
	269
	270	unsigned hub : 1;
	271	afi_t afi;
	272	union sockunion proto_addr;
996c9314	273	const char nbma_fqdn; / IP-address or FQDN */
2fb975da TT	274
	275	struct thread *t_resolve;
	276	struct resolver_query dns_resolve;
	277	struct list_head reglist_head;
	278	};
	279
fa31fcf2 AL	280	struct nhrp_multicast {
	281	struct interface *ifp;
	282	struct list_head list_entry;
	283	afi_t afi;
	284	union sockunion nbma_addr; /* IP-address */
	285	};
	286
0ca036b4 TT	287	struct nhrp_registration {
	288	struct list_head reglist_entry;
	289	struct thread *t_register;
	290	struct nhrp_nhs *nhs;
	291	struct nhrp_reqid reqid;
	292	unsigned int timeout;
	293	unsigned mark : 1;
	294	union sockunion proto_addr;
	295	struct nhrp_peer *peer;
	296	struct notifier_block peer_notifier;
	297	};
	298
2fb975da TT	299	#define NHRP_IFF_SHORTCUT 0x0001
	300	#define NHRP_IFF_REDIRECT 0x0002
	301	#define NHRP_IFF_REG_NO_UNIQUE 0x0100
	302
	303	struct nhrp_interface {
	304	struct interface *ifp;
	305
	306	unsigned enabled : 1;
	307
	308	char ipsec_profile, ipsec_fallback_profile, *source;
	309	union sockunion nbma;
	310	union sockunion nat_nbma;
7f48cfa5 PG	311	unsigned int link_idx;
	312	unsigned int link_vrf_id;
	313	uint32_t i_grekey;
	314	uint32_t o_grekey;
2fb975da TT	315
2fb975da TT	316	struct hash *peer_hash;
fef2ed13	317	struct hash *cache_config_hash;
2fb975da TT	318	struct hash *cache_hash;
	319
	320	struct notifier_list notifier_list;
	321
	322	struct interface *nbmaifp;
	323	struct notifier_block nbmanifp_notifier;
	324
	325	struct nhrp_afi_data {
	326	unsigned flags;
	327	unsigned short configured : 1;
	328	union sockunion addr;
	329	uint32_t network_id;
	330	short configured_mtu;
	331	unsigned short mtu;
	332	unsigned int holdtime;
	333	struct list_head nhslist_head;
fa31fcf2	334	struct list_head mcastlist_head;
2fb975da TT	335	} afi[AFI_MAX];
	336	};
	337
7f48cfa5 PG	338	struct nhrp_gre_info {
	339	ifindex_t ifindex;
	340	struct in_addr vtep_ip; /* IFLA_GRE_LOCAL */
	341	struct in_addr vtep_ip_remote; /* IFLA_GRE_REMOTE */
	342	uint32_t ikey;
	343	uint32_t okey;
	344	ifindex_t ifindex_link; /* Interface index of interface
	345	* linked with GRE
	346	*/
	347	vrf_id_t vrfid_link;
	348	};
	349
26efbc7b DS	350	extern struct zebra_privs_t nhrpd_privs;
26efbc7b DS	351
2fb975da TT	352	int sock_open_unix(const char *path);
	353
	354	void nhrp_interface_init(void);
	355	void nhrp_interface_update(struct interface *ifp);
	356	void nhrp_interface_update_mtu(struct interface *ifp, afi_t afi);
7f48cfa5 PG	357	void nhrp_interface_update_nbma(struct interface *ifp,
7f48cfa5 PG	358	struct nhrp_gre_info *gre_info);
2fb975da	359
121f9dee QY	360	int nhrp_interface_add(ZAPI_CALLBACK_ARGS);
	361	int nhrp_interface_delete(ZAPI_CALLBACK_ARGS);
	362	int nhrp_interface_up(ZAPI_CALLBACK_ARGS);
	363	int nhrp_interface_down(ZAPI_CALLBACK_ARGS);
	364	int nhrp_interface_address_add(ZAPI_CALLBACK_ARGS);
	365	int nhrp_interface_address_delete(ZAPI_CALLBACK_ARGS);
b3b75104	366	void nhrp_neighbor_operation(ZAPI_CALLBACK_ARGS);
7f48cfa5	367	void nhrp_gre_update(ZAPI_CALLBACK_ARGS);
996c9314 LB	368
	369	void nhrp_interface_notify_add(struct interface ifp, struct notifier_block n,
	370	notifier_fn_t fn);
2fb975da	371	void nhrp_interface_notify_del(struct interface ifp, struct notifier_block n);
996c9314 LB	372	void nhrp_interface_set_protection(struct interface ifp, const char profile,
996c9314 LB	373	const char *fallback_profile);
2fb975da	374	void nhrp_interface_set_source(struct interface ifp, const char ifname);
138c5a74 DS	375	extern int nhrp_ifp_create(struct interface *ifp);
	376	extern int nhrp_ifp_up(struct interface *ifp);
	377	extern int nhrp_ifp_down(struct interface *ifp);
	378	extern int nhrp_ifp_destroy(struct interface *ifp);
2fb975da	379
996c9314 LB	380	int nhrp_nhs_add(struct interface ifp, afi_t afi, union sockunion proto_addr,
	381	const char *nbma_fqdn);
	382	int nhrp_nhs_del(struct interface ifp, afi_t afi, union sockunion proto_addr,
	383	const char *nbma_fqdn);
2fb975da TT	384	int nhrp_nhs_free(struct nhrp_nhs *nhs);
2fb975da TT	385	void nhrp_nhs_terminate(void);
996c9314 LB	386	void nhrp_nhs_foreach(struct interface *ifp, afi_t afi,
	387	void (cb)(struct nhrp_nhs , struct nhrp_registration *,
	388	void *),
	389	void *ctx);
ee72f0a0	390	void nhrp_nhs_interface_del(struct interface *ifp);
2fb975da	391
0f8595a9 RD	392	int nhrp_multicast_add(struct interface *ifp, afi_t afi,
	393	union sockunion *nbma_addr);
	394	int nhrp_multicast_del(struct interface *ifp, afi_t afi,
	395	union sockunion *nbma_addr);
fa31fcf2 AL	396	void nhrp_multicast_interface_del(struct interface *ifp);
fa31fcf2 AL	397	void nhrp_multicast_foreach(struct interface *ifp, afi_t afi,
0f8595a9 RD	398	void (cb)(struct nhrp_multicast , void *),
0f8595a9 RD	399	void *ctx);
9084e209	400	void netlink_mcast_set_nflog_group(int nlgroup);
fa31fcf2	401
2fb975da	402	void nhrp_route_update_nhrp(const struct prefix p, struct interface ifp);
996c9314 LB	403	void nhrp_route_announce(int add, enum nhrp_cache_type type,
	404	const struct prefix p, struct interface ifp,
	405	const union sockunion *nexthop, uint32_t mtu);
121f9dee	406	int nhrp_route_read(ZAPI_CALLBACK_ARGS);
996c9314 LB	407	int nhrp_route_get_nexthop(const union sockunion addr, struct prefix p,
	408	union sockunion via, struct interface *ifp);
	409	enum nhrp_route_type nhrp_route_address(struct interface *in_ifp,
	410	union sockunion addr, struct prefix p,
	411	struct nhrp_peer **peer);
2fb975da TT	412
	413	void nhrp_config_init(void);
	414
	415	void nhrp_shortcut_init(void);
	416	void nhrp_shortcut_terminate(void);
	417	void nhrp_shortcut_initiate(union sockunion *addr);
996c9314 LB	418	void nhrp_shortcut_foreach(afi_t afi,
	419	void (cb)(struct nhrp_shortcut , void *),
	420	void *ctx);
2fb975da TT	421	void nhrp_shortcut_purge(struct nhrp_shortcut *s, int force);
	422	void nhrp_shortcut_prefix_change(const struct prefix *p, int deleted);
	423
ee72f0a0	424	void nhrp_cache_interface_del(struct interface *ifp);
fef2ed13 PG	425	void nhrp_cache_config_free(struct nhrp_cache_config *c);
	426	struct nhrp_cache_config nhrp_cache_config_get(struct interface ifp,
	427	union sockunion *remote_addr,
	428	int create);
996c9314 LB	429	struct nhrp_cache nhrp_cache_get(struct interface ifp,
	430	union sockunion *remote_addr, int create);
	431	void nhrp_cache_foreach(struct interface *ifp,
	432	void (cb)(struct nhrp_cache , void ), void ctx);
fef2ed13 PG	433	void nhrp_cache_config_foreach(struct interface *ifp,
fef2ed13 PG	434	void (cb)(struct nhrp_cache_config , void ), void ctx);
2fb975da	435	void nhrp_cache_set_used(struct nhrp_cache *, int);
996c9314 LB	436	int nhrp_cache_update_binding(struct nhrp_cache *, enum nhrp_cache_type type,
996c9314 LB	437	int holding_time, struct nhrp_peer *p,
85365e51 AL	438	uint32_t mtu, union sockunion *nbma_natoa,
85365e51 AL	439	union sockunion *claimed_nbma);
996c9314 LB	440	void nhrp_cache_notify_add(struct nhrp_cache c, struct notifier_block ,
996c9314 LB	441	notifier_fn_t);
2fb975da TT	442	void nhrp_cache_notify_del(struct nhrp_cache c, struct notifier_block );
	443
	444	void nhrp_vc_init(void);
	445	void nhrp_vc_terminate(void);
996c9314 LB	446	struct nhrp_vc nhrp_vc_get(const union sockunion src,
996c9314 LB	447	const union sockunion *dst, int create);
2fb975da	448	int nhrp_vc_ipsec_updown(uint32_t child_id, struct nhrp_vc *vc);
996c9314 LB	449	void nhrp_vc_notify_add(struct nhrp_vc , struct notifier_block ,
996c9314 LB	450	notifier_fn_t);
2fb975da TT	451	void nhrp_vc_notify_del(struct nhrp_vc , struct notifier_block );
	452	void nhrp_vc_foreach(void (cb)(struct nhrp_vc , void ), void ctx);
	453	void nhrp_vc_reset(void);
	454
	455	void vici_init(void);
	456	void vici_terminate(void);
083bbfae GG	457	void vici_terminate_vc_by_profile_name(char *profile_name);
083bbfae GG	458	void vici_terminate_vc_by_ike_id(unsigned int ike_id);
996c9314 LB	459	void vici_request_vc(const char profile, union sockunion src,
996c9314 LB	460	union sockunion *dst, int prio);
2fb975da TT	461
	462	extern const char *nhrp_event_socket_path;
	463
	464	void evmgr_init(void);
	465	void evmgr_terminate(void);
	466	void evmgr_set_socket(const char *socket);
996c9314 LB	467	void evmgr_notify(const char name, struct nhrp_cache c,
996c9314 LB	468	void (cb)(struct nhrp_reqid , void *));
2fb975da	469
996c9314 LB	470	struct nhrp_packet_header nhrp_packet_push(struct zbuf zb, uint8_t type,
	471	const union sockunion *src_nbma,
	472	const union sockunion *src_proto,
	473	const union sockunion *dst_proto);
2fb975da TT	474	void nhrp_packet_complete(struct zbuf zb, struct nhrp_packet_header hdr);
	475	uint16_t nhrp_packet_calculate_checksum(const uint8_t *pdu, uint16_t len);
	476
996c9314 LB	477	struct nhrp_packet_header nhrp_packet_pull(struct zbuf zb,
	478	union sockunion *src_nbma,
	479	union sockunion *src_proto,
	480	union sockunion *dst_proto);
	481
	482	struct nhrp_cie_header nhrp_cie_push(struct zbuf zb, uint8_t code,
	483	const union sockunion *nbma,
	484	const union sockunion *proto);
	485	struct nhrp_cie_header nhrp_cie_pull(struct zbuf zb,
	486	struct nhrp_packet_header *hdr,
	487	union sockunion *nbma,
	488	union sockunion *proto);
	489
	490	struct nhrp_extension_header *
	491	nhrp_ext_push(struct zbuf zb, struct nhrp_packet_header hdr, uint16_t type);
2fb975da	492	void nhrp_ext_complete(struct zbuf zb, struct nhrp_extension_header ext);
996c9314 LB	493	struct nhrp_extension_header nhrp_ext_pull(struct zbuf zb,
	494	struct zbuf *payload);
	495	void nhrp_ext_request(struct zbuf zb, struct nhrp_packet_header hdr,
	496	struct interface *);
	497	int nhrp_ext_reply(struct zbuf zb, struct nhrp_packet_header hdr,
	498	struct interface ifp, struct nhrp_extension_header ext,
	499	struct zbuf *extpayload);
	500
	501	uint32_t nhrp_reqid_alloc(struct nhrp_reqid_pool , struct nhrp_reqid r,
	502	void (cb)(struct nhrp_reqid , void *));
2fb975da TT	503	void nhrp_reqid_free(struct nhrp_reqid_pool , struct nhrp_reqid r);
	504	struct nhrp_reqid nhrp_reqid_lookup(struct nhrp_reqid_pool , uint32_t reqid);
	505
	506	int nhrp_packet_init(void);
	507
ee72f0a0	508	void nhrp_peer_interface_del(struct interface *ifp);
996c9314 LB	509	struct nhrp_peer nhrp_peer_get(struct interface ifp,
996c9314 LB	510	const union sockunion *remote_nbma);
2fb975da TT	511	struct nhrp_peer nhrp_peer_ref(struct nhrp_peer p);
	512	void nhrp_peer_unref(struct nhrp_peer *p);
	513	int nhrp_peer_check(struct nhrp_peer *p, int establish);
996c9314 LB	514	void nhrp_peer_notify_add(struct nhrp_peer p, struct notifier_block ,
996c9314 LB	515	notifier_fn_t);
2fb975da TT	516	void nhrp_peer_notify_del(struct nhrp_peer p, struct notifier_block );
	517	void nhrp_peer_recv(struct nhrp_peer p, struct zbuf zb);
	518	void nhrp_peer_send(struct nhrp_peer p, struct zbuf zb);
	519	void nhrp_peer_send_indication(struct interface ifp, uint16_t, struct zbuf );
	520
bb58f442 GG	521	int nhrp_nhs_match_ip(union sockunion in_ip, struct nhrp_interface nifp);
bb58f442 GG	522
2fb975da	523	#endif