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/*
 * Copyright (c) 2002, 2014, Oracle and/or its affiliates. All rights reserved.
 */

#ifndef _IPMP_QUERY_H
#define	_IPMP_QUERY_H

#include <sys/types.h>
#include <sys/socket.h>			/* needed by <net/if.h> */
#include <net/if.h>			/* for LIF*NAMSIZ */
#include <inet/ip.h>
#include <ipmp.h>

/*
 * IPMP query interfaces.
 *
 * These interfaces may only be used within ON or after signing a contract
 * with ON.  For documentation, refer to PSARC/2002/615 and PSARC/2007/272.
 */

#ifdef __cplusplus
extern "C" {
#endif

/*
 * Assorted enumerations used in the data types described below.
 */
typedef enum ipmp_if_probestate {
	IPMP_PROBE_OK,		/* probes detect no problems */
	IPMP_PROBE_FAILED,	/* probes detect failure */
	IPMP_PROBE_UNKNOWN,	/* probe detection unavailable */
	IPMP_PROBE_DISABLED 	/* probe detection disabled */
} ipmp_if_probestate_t;

typedef enum ipmp_if_linkstate {
	IPMP_LINK_UP,		/* link detects up */
	IPMP_LINK_DOWN,		/* link detects down */
	IPMP_LINK_UNKNOWN	/* link detection unavailable */
} ipmp_if_linkstate_t;

typedef enum ipmp_if_flags {
	IPMP_IFFLAG_INACTIVE	= 0x1,
	IPMP_IFFLAG_HWADDRDUP	= 0x2,
	IPMP_IFFLAG_ACTIVE 	= 0x4,
	IPMP_IFFLAG_DOWN	= 0x8
} ipmp_if_flags_t;

typedef enum ipmp_addr_state {
	IPMP_ADDR_UP,		/* address is up */
	IPMP_ADDR_DOWN		/* address is down */
} ipmp_addr_state_t;

typedef enum ipmp_if_targmode {
	IPMP_TARG_DISABLED,	/* use of targets is disabled */
	IPMP_TARG_ROUTES,	/* route-learned targets */
	IPMP_TARG_MULTICAST,	/* multicast-learned targets */
	IPMP_TARG_TRANSITIVE	/* Transitive probing is in effect */
} ipmp_if_targmode_t;

#define	IPMP_LIST_SIZE(listtype, elsize, nel) \
	((sizeof (ipmp_ ## listtype ## _t) - (elsize)) + ((nel) * (elsize)))

/*
 * Data type describing a list of IPMP groups.
 */
typedef struct ipmp_grouplist {
	uint64_t	gl_sig;
	unsigned int	gl_ngroup;
	unsigned int	gl_padding;
	char		gl_groups[1][LIFGRNAMSIZ];
} ipmp_grouplist_t;

#define	IPMP_GROUPLIST_SIZE(ngr)	\
	IPMP_LIST_SIZE(grouplist, LIFGRNAMSIZ, ngr)

/*
 * Data type describing a list of interfaces.
 */
typedef struct ipmp_iflist {
	unsigned int	il_nif;
	unsigned int	il_padding;
	char		il_ifs[1][LIFNAMSIZ];
} ipmp_iflist_t;

typedef union {
	ipmp_iflist_t 	*_iflistp;
	uint64_t	_padding;
} ipmp_iflist_p_t;

#define	IPMP_IFLIST_SIZE(nif)		\
	IPMP_LIST_SIZE(iflist, LIFNAMSIZ, nif)

/*
 * Data type describing a list of addresses.
 */
typedef struct ipmp_addrlist {
	unsigned int		al_naddr;
	unsigned int		al_padding;
	struct sockaddr_storage al_addrs[1];
} ipmp_addrlist_t;

typedef union {
	ipmp_addrlist_t	*_adlistp;
	uint64_t	_padding;
} ipmp_addrlist_p_t;

#define	IPMP_ADDRLIST_SIZE(naddr)	\
	IPMP_LIST_SIZE(addrlist, sizeof (struct sockaddr_storage), naddr)

/*
 * Data type describing the state of an IPMP group.
 */
typedef struct ipmp_groupinfo {
	char			gr_name[LIFGRNAMSIZ];
	uint64_t		gr_sig;
	ipmp_group_state_t	gr_state;
	ipmp_xprobe_opt_t	gr_xprobeopt;
	unsigned int		gr_fdt;
	unsigned int		gr_padding;
	ipmp_iflist_p_t		gr_iflistu;
	ipmp_addrlist_p_t	gr_adlistu;
	char			gr_ifname[LIFNAMSIZ];
	char			gr_m4ifname[LIFNAMSIZ];
	char			gr_m6ifname[LIFNAMSIZ];
	char			gr_bcifname[LIFNAMSIZ];

#define	gr_iflistp	gr_iflistu._iflistp
#define	gr_adlistp	gr_adlistu._adlistp
} ipmp_groupinfo_t;

/*
 * Data type describing IPMP target information for a particular interface.
 */
typedef struct ipmp_targinfo {
	char			it_name[LIFNAMSIZ];
	struct sockaddr_storage	it_testaddr;
	ipmp_if_targmode_t	it_targmode;
	uint_t			it_padding;
	ipmp_addrlist_p_t	it_targlistu;
	ipmp_iflist_p_t		it_iflistu;

#define	it_targlistp	it_targlistu._adlistp
#define	it_iflistp	it_iflistu._iflistp
} ipmp_targinfo_t;

/*
 * Data type describing the IPMP-related state of an interface.
 */
typedef struct ipmp_ifinfo {
	char			if_name[LIFNAMSIZ];
	char			if_group[LIFGRNAMSIZ];
	ipmp_if_state_t		if_state;
	ipmp_if_type_t		if_type;
	ipmp_if_linkstate_t	if_linkstate;
	ipmp_if_probestate_t	if_probestate;
	ipmp_if_flags_t		if_flags;
	uint_t			if_padding;
	ipmp_targinfo_t		if_targinfo4;
	ipmp_targinfo_t		if_targinfo6;
} ipmp_ifinfo_t;

/*
 * Data type describing an IPMP data address.
 */
typedef struct ipmp_addrinfo {
	struct sockaddr_storage	ad_addr;
	ipmp_addr_state_t	ad_state;
	uint_t			ad_padding;
	char			ad_group[LIFGRNAMSIZ];
	char			ad_binding[LIFNAMSIZ];
} ipmp_addrinfo_t;

typedef enum {
	IPMP_QCONTEXT_LIVE,
	IPMP_QCONTEXT_SNAP
} ipmp_qcontext_t;

extern int  ipmp_setqcontext(ipmp_handle_t, ipmp_qcontext_t);
extern int  ipmp_getgrouplist(ipmp_handle_t, ipmp_grouplist_t **);
extern void ipmp_freegrouplist(ipmp_grouplist_t *);
extern int  ipmp_getgroupinfo(ipmp_handle_t, const char *, ipmp_groupinfo_t **);
extern void ipmp_freegroupinfo(ipmp_groupinfo_t *);
extern int  ipmp_getifinfo(ipmp_handle_t, const char *, ipmp_ifinfo_t **);
extern void ipmp_freeifinfo(ipmp_ifinfo_t *);
extern int  ipmp_getaddrinfo(ipmp_handle_t, const char *,
    struct sockaddr_storage *, ipmp_addrinfo_t **);
extern void ipmp_freeaddrinfo(ipmp_addrinfo_t *);

#ifdef __cplusplus
}
#endif

#endif /* _IPMP_QUERY_H */