[thirdparty/bird.git] / nest / bfd.h

/*
 *	BIRD -- Bidirectional Forwarding Detection (BFD)
 *
 *	Can be freely distributed and used under the terms of the GNU GPL.
 */

#ifndef _BIRD_NBFD_H_
#define _BIRD_NBFD_H_

#include "lib/lists.h"
#include "lib/resource.h"
#include "conf/conf.h"

struct bfd_session;

struct bfd_options {
  u32 min_rx_int;
  u32 min_tx_int;
  u32 idle_tx_int;
  u8 multiplier;
  u8 passive;
  u8 passive_set;
  u8 mode;
  u8 auth_type;				/* Authentication type (BFD_AUTH_*) */
  list *passwords;			/* Passwords for authentication */
};

struct bfd_request {
  resource r;
  node n;

  ip_addr addr;
  ip_addr local;
  struct iface *iface;
  struct iface *vrf;
  struct bfd_options opts;

  void (*hook)(struct bfd_request *);
  void *data;

  struct bfd_session *session;

  u8 state;
  u8 diag;
  u8 old_state;
  u8 down;
};

#define BGP_BFD_GRACEFUL	2	/* BFD down triggers graceful restart */

#define BFD_STATE_ADMIN_DOWN	0
#define BFD_STATE_DOWN		1
#define BFD_STATE_INIT		2
#define BFD_STATE_UP		3


static inline struct bfd_options * bfd_new_options(void)
{ return cfg_allocz(sizeof(struct bfd_options)); }

#ifdef CONFIG_BFD

struct bfd_request * bfd_request_session(pool *p, ip_addr addr, ip_addr local, struct iface *iface, struct iface *vrf, void (*hook)(struct bfd_request *), void *data, const struct bfd_options *opts);
void bfd_update_request(struct bfd_request *req, const struct bfd_options *opts);

static inline void cf_check_bfd(int use UNUSED) { }

#else

static inline struct bfd_request * bfd_request_session(pool *p UNUSED, ip_addr addr UNUSED, ip_addr local UNUSED, struct iface *iface UNUSED, struct iface *vrf UNUSED, void (*hook)(struct bfd_request *) UNUSED, void *data UNUSED, const struct bfd_options *opts UNUSED) { return NULL; }
static inline void bfd_update_request(struct bfd_request *req UNUSED, const struct bfd_options *opts UNUSED) { };

static inline void cf_check_bfd(int use) { if (use) cf_error("BFD not available"); }

#endif /* CONFIG_BFD */


#endif /* _BIRD_NBFD_H_ */
Commit	Line	Data
7c9930f9 OZ	1	/*
	2	* BIRD -- Bidirectional Forwarding Detection (BFD)
	3	*
	4	* Can be freely distributed and used under the terms of the GNU GPL.
	5	*/
	6
	7	#ifndef _BIRD_NBFD_H_
	8	#define _BIRD_NBFD_H_
	9
	10	#include "lib/lists.h"
	11	#include "lib/resource.h"
9d3fc306	12	#include "conf/conf.h"
7c9930f9 OZ	13
	14	struct bfd_session;
	15
9d3fc306 OZ	16	struct bfd_options {
	17	u32 min_rx_int;
	18	u32 min_tx_int;
	19	u32 idle_tx_int;
	20	u8 multiplier;
	21	u8 passive;
	22	u8 passive_set;
	23	u8 mode;
e6dbde68 KK	24	u8 auth_type; /* Authentication type (BFD_AUTH_) /
e6dbde68 KK	25	list passwords; / Passwords for authentication */
9d3fc306 OZ	26	};
9d3fc306 OZ	27
7c9930f9 OZ	28	struct bfd_request {
	29	resource r;
	30	node n;
	31
	32	ip_addr addr;
	33	ip_addr local;
	34	struct iface *iface;
cf7ff995	35	struct iface *vrf;
9d3fc306	36	struct bfd_options opts;
7c9930f9 OZ	37
	38	void (hook)(struct bfd_request );
	39	void *data;
	40
	41	struct bfd_session *session;
	42
	43	u8 state;
	44	u8 diag;
	45	u8 old_state;
	46	u8 down;
	47	};
	48
9d3fc306	49	#define BGP_BFD_GRACEFUL 2 /* BFD down triggers graceful restart */
7c9930f9	50
538264cf OZ	51	#define BFD_STATE_ADMIN_DOWN 0
	52	#define BFD_STATE_DOWN 1
	53	#define BFD_STATE_INIT 2
	54	#define BFD_STATE_UP 3
	55
	56
9d3fc306 OZ	57	static inline struct bfd_options * bfd_new_options(void)
	58	{ return cfg_allocz(sizeof(struct bfd_options)); }
	59
7c9930f9 OZ	60	#ifdef CONFIG_BFD
7c9930f9 OZ	61
9d3fc306 OZ	62	struct bfd_request * bfd_request_session(pool p, ip_addr addr, ip_addr local, struct iface iface, struct iface vrf, void (hook)(struct bfd_request ), void data, const struct bfd_options *opts);
9d3fc306 OZ	63	void bfd_update_request(struct bfd_request req, const struct bfd_options opts);
7c9930f9	64
3e236955	65	static inline void cf_check_bfd(int use UNUSED) { }
7c9930f9 OZ	66
	67	#else
	68
9d3fc306 OZ	69	static inline struct bfd_request * bfd_request_session(pool p UNUSED, ip_addr addr UNUSED, ip_addr local UNUSED, struct iface iface UNUSED, struct iface vrf UNUSED, void (hook)(struct bfd_request ) UNUSED, void data UNUSED, const struct bfd_options *opts UNUSED) { return NULL; }
9d3fc306 OZ	70	static inline void bfd_update_request(struct bfd_request req UNUSED, const struct bfd_options opts UNUSED) { };
7c9930f9 OZ	71
	72	static inline void cf_check_bfd(int use) { if (use) cf_error("BFD not available"); }
	73
	74	#endif /* CONFIG_BFD */
	75
	76
	77
	78	#endif /* _BIRD_NBFD_H_ */