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/*
 * Copyright (c) 2014, 2017, Oracle and/or its affiliates. All rights reserved.
 */

#ifndef	_SYS_KSTAT2_COMMON_H
#define	_SYS_KSTAT2_COMMON_H

/*
 * Definitions shared between kernel, libkstat2 and user-space clients.
 */

#ifdef	__cplusplus
extern "C" {
#endif

/**
 * @brief Flags for maps
 */
typedef enum kstat2_map_flag {
    KSTAT2_MAPF_NONE	= 0x00,	/**< No flags present */
    KSTAT2_MAPF_DORM	= 0x01	/**< Kstat is dormant */
} kstat2_map_flag_t;

/**
 * @brief Metadata type for Maps - 2^16 max.
 */
typedef enum kstat2_metatype {
    KSTAT2_MT_NONE	= 0,	/**< No type */
    KSTAT2_MT_QUEUE	= 1,	/**< Queue data */
    KSTAT2_MT_IO	= 2,	/**< IO data */
    KSTAT2_MT_INTR	= 3,	/**< Interrupt data */
    KSTAT2_MT_TIMER	= 4,	/**< Timer data (v1 compatibility) */
    KSTAT2_MT_HIST	= 5	/**< Histogram data */
} kstat2_metatype_t;

/**
 * @brief Metadata flags for maps - 32 max.
 */
typedef enum kstat2_metaflag {
    KSTAT2_MF_NONE	= 0x00,	/**< No flags present */
    KSTAT2_MF_STABLE	= 0x01,	/**< Kstat is stable across Solaris releases */
    KSTAT2_MF_PRIV	= 0x02	/**< Kstat has privileged read access */
} kstat2_metaflag_t;

/* ! [kstat2_nv_type_t] */
/**
 * @brief Type of a name/value pair's value.
 */
typedef enum kstat2_nv_type {
    KSTAT2_NVVT_MAP	= 0,	/**< Nested Name/Value map */
    KSTAT2_NVVT_INT	= 1,	/**< 64-bit unsigned integer */
    KSTAT2_NVVT_INTS	= 2,	/**< Array of 64-bit unsigned integers */
    KSTAT2_NVVT_STR	= 3,	/**< Null-terminated C string */
    KSTAT2_NVVT_STRS	= 4	/**< Array of null-terminated C strings */
} kstat2_nv_type_t;
/* ! [kstat2_nv_type_t] */

/**
 * @anchor nvflags @name Name/value pair flags.
 * @brief Flags for name/value pairs - 16 max.
 */
typedef enum kstat2_nv_flag {
    KSTAT2_NVF_NONE	= 0x00,	/**< No flags present */
    KSTAT2_NVF_INVAL	= 0x01,	/**< Value is invalid */
    _KSTAT2_NVF_V1ONLY	= 0x8000	/**< Private flag indicating v1 kstat */
} kstat2_nv_flag_t;

/**
 * @brief Metadata type for Name/Value pairs - 2^16 max.
 */
typedef enum kstat2_nv_metatype {
    KSTAT2_NVMT_UNK	= 0,	/**< Unknown type */
    KSTAT2_NVMT_ID	= 1,	/**< Identifier, e.g. CPU type, CPU chip ID */
    KSTAT2_NVMT_CNT	= 2,	/**< Count, e.g. network packets, disk blocks */
    KSTAT2_NVMT_T_EPOCH	= 3,	/**< Time since UNIX epoch */
    KSTAT2_NVMT_T_REL	= 4,	/**< Time relative to boot */
    KSTAT2_NVMT_T_ACC	= 5,	/**< Accumulated time since boot */
    KSTAT2_NVMT_PCT	= 6,	/**< Percentage, 0-100 */
    KSTAT2_NVMT_ADDR	= 7,	/**< Memory address */
    KSTAT2_NVMT_TEMP_C	= 8,	/**< Temperature in centigrade */
    KSTAT2_NVMT_RPM	= 9,	/**< Revolutions per minute */
    KSTAT2_NVMT_VOLT	= 10,	/**< Voltage */
    KSTAT2_NVMT_WATT	= 11,	/**< Power consumption */
    KSTAT2_NVMT_CURR	= 12,	/**< Current */
    KSTAT2_NVMT_BYTES	= 13,	/**< Byte count */
    KSTAT2_NVMT_BITS	= 14,	/**< Bit count */
    KSTAT2_NVMT_STATE	= 15,	/**< State, e.g. CPU state */
    KSTAT2_NVMT_FREQ	= 16,	/**< Frequency (Hz) */
    KSTAT2_NVMT_FLAGS	= 17,	/**< Bitwise flags */
    KSTAT2_NVMT_JOULE	= 18	/**< Energy in Joules */
} kstat2_nv_metatype_t;

/**
 * @brief Metadata flags for Name/value pairs - 32 max.
 */
typedef enum kstat2_nv_metaflag {
    KSTAT2_NVMF_NONE	= 0x00,	/**< No metaflags are set */
    KSTAT2_NVMF_FRACT	= 0x01,	/**< Units is a divisor not a multiplier */
    KSTAT2_NVMF_IMMUT	= 0x02,	/**< Value is immutable */
    KSTAT2_NVMF_STABLE	= 0x04,	/**< Kval is stable across Solaris releases */
    KSTAT2_NVMF_LIMIT	= 0x08	/**< Value is a limit or limits */
} kstat2_nv_metaflag_t;

/**
 * @brief Histogram types.
 */
typedef enum kstat2_nv_hist_type {
	KSTAT2_NVHIST_LINEAR	= 0, /**< Linear range of buckets */
	KSTAT2_NVHIST_LOG10	= 1, /**< Log10 ranging buckets */
	KSTAT2_NVHIST_LOG2	= 2, /**< Log2 ranging buckets */
	KSTAT2_NVHIST_LOG10_LIN	= 3  /**< Log10-linear ranging buckets */
} kstat2_nv_hist_type_t;

/**
 * @brief Optional kstat enabled states.
 */
typedef enum kstat2_opt_estate {
	KSTAT2_OPT_ESTATE_UNKNOWN  = 0x00,
	KSTAT2_OPT_ESTATE_DISABLED = 0x01,
	KSTAT2_OPT_ESTATE_ENABLED  = 0x02,
	KSTAT2_OPT_ESTATE_ERROR    = 0x04,
	KSTAT2_OPT_ESTATE_ALL	   = 0xFF, /**< Mask for all enabled states */
	KSTAT2_OPT_ESTATE_DEFAULT  = 0x100 /**< Default state flag */
} kstat2_opt_estate_t;

#ifdef	__cplusplus
}
#endif

#endif	/* _SYS_KSTAT2_COMMON_H */