
/**
    \file access_internal.h

    Module Internal Header File contains structure definitions including tables
    maintained by the module
*/

/*
    Copyright (C) 2016. Mindtree Ltd.
    All rights reserved.
*/

#ifndef _H_ACCESS_INTERNAL_
#define _H_ACCESS_INTERNAL_

/* --------------------------------------------- Header File Inclusion */
#include "MS_common.h"
#include "MS_access_api.h"
#include "MS_trn_api.h"
#include "MS_net_api.h"

#include "bitarray.h"

/* --------------------------------------------- Global Definitions */

#ifdef ACCESS_NO_DEBUG
    #define ACCESS_ERR          EM_debug_null
#else /* ACCESS_NO_DEBUG */
    #ifdef VAR_ARG_IN_MACRO_NOT_SUPPORTED
        #define ACCESS_ERR
    #else
        #define ACCESS_ERR(...)     EM_debug_error(MS_MODULE_ID_ACCESS, __VA_ARGS__)
    #endif /* VAR_ARG_IN_MACRO_NOT_SUPPORTED */
#endif /* ACCESS_NO_DEBUG */

#ifdef ACCESS_DEBUG
    #ifdef VAR_ARG_IN_MACRO_NOT_SUPPORTED
        #define ACCESS_TRC
        #define ACCESS_INF

        #define ACCESS_debug_dump_bytes(data, datalen)

    #else
        #define ACCESS_TRC(...)     EM_debug_trace(MS_MODULE_ID_ACCESS,__VA_ARGS__)
        #define ACCESS_INF(...)     EM_debug_info(MS_MODULE_ID_ACCESS,__VA_ARGS__)

        #define ACCESS_debug_dump_bytes(data, datalen) EM_debug_dump_bytes(MS_MODULE_ID_ACCESS, (data), (datalen))

    #endif /* VAR_ARG_IN_MACRO_NOT_SUPPORTED */
#else /* ACCESS_DEBUG */
    #define ACCESS_TRC          EM_debug_null
    #define ACCESS_INF          EM_debug_null

    #define ACCESS_debug_dump_bytes(data, datalen)

#endif /* ACCESS_DEBUG */
#define MS_S_MAX_ACCESS_ELEMENT_COUNT               5
#define MS_S_MAX_ACCESS_MODEL_COUNT                 20
#define MS_S_MAX_SUBNETS                            3
#define MS_S_MAX_LPNS                               5
#define MS_S_MAX_DEV_KEYS                           64
#define MS_S_MAX_APPS                               5
#define MS_S_MAX_VIRTUAL_ADDRS                      3
#define MS_S_MAX_NON_VIRTUAL_ADDRS                  32
#define MS_S_MAX_PROXY_FILTER_LIST_SIZE             16



/**Support max Size */
#define MS_PS_RECORD_ELEMENTS_MAXSIZE               ((((sizeof(UINT16) + (sizeof(MS_ACCESS_ELEMENT_TYPE) * MS_CONFIG_LIMITS(MS_S_MAX_ACCESS_ELEMENT_COUNT)) + sizeof(composition_data_hdr))+3)>>2)<<2)
#define MS_PS_RECORD_MODELS_MAXSIZE                 ((((sizeof(UINT16) + (MS_ACCESS_MODEL_TYPE_SIZE * (MS_CONFIG_LIMITS(MS_S_MAX_ACCESS_MODEL_COUNT))))+3)>>2)<<2)
#define MS_PS_RECORD_SUBNETS_MAXSIZE                ((((sizeof(UINT16) + sizeof(ms_iv_index)  + sizeof(ms_netkey_count) + (MS_NETKEY_ENTRY_SIZE * (MS_CONFIG_LIMITS(MS_S_MAX_SUBNETS) + MS_CONFIG_LIMITS(MS_S_MAX_LPNS))) \
                                                        +(sizeof(MS_NET_ADDR) * MS_CONFIG_LIMITS(MS_S_MAX_DEV_KEYS)) + sizeof(UINT16))+3)>>2)<<2)
#define MS_PS_RECORD_DEV_KEYS_MAXSIZE               ((((sizeof(UINT16) + sizeof(UINT16) + sizeof(UINT16) + (sizeof(MS_DEV_KEY_ENTRY) * MS_CONFIG_LIMITS(MS_S_MAX_DEV_KEYS)))+3)>>2)<<2)
#define MS_PS_RECORD_APP_KEYS_MAXSIZE               ((((sizeof(UINT16) + (sizeof(MS_APPKEY_ENTRY) * MS_CONFIG_LIMITS(MS_S_MAX_APPS)))+3)>>2)<<2)
#define MS_PS_RECORD_ELEMENT_ADDRS_MAXSIZE          ((((sizeof(UINT16) + (sizeof(MS_ELEMENT_ADDR_ENTRY) * (1 + MS_CONFIG_LIMITS(MS_S_MAX_LPNS))))+3)>>2)<<2)
#define MS_PS_RECORD_VIRTUAL_ADDRS_MAXSIZE          ((((sizeof(UINT16) + (sizeof(MS_VIRTUAL_ADDR_ENTRY) * MS_CONFIG_LIMITS(MS_S_MAX_VIRTUAL_ADDRS)))+3)>>2)<<2)
#define MS_PS_RECORD_NON_VIRTUAL_ADDRS_MAXSIZE      ((((sizeof(UINT16) + (sizeof(MS_NON_VIRTUAL_ADDR_ENTRY) * MS_CONFIG_LIMITS(MS_S_MAX_NON_VIRTUAL_ADDRS)))+3)>>2)<<2)
#define MS_PS_RECORD_SEQ_NUMBER_MAXSIZE             ((((sizeof(UINT32 /* net_seq_number_state.block_seq_num_max */))+3)>>2)<<2)
#define MS_PS_RECORD_TX_STATES_FEATURES_MAXSIZE     ((((sizeof(UINT16) + sizeof(ms_tx_state) + sizeof(ms_features))+3)>>2)<<2)
#define MS_PS_RECORD_PROVISIONER_ADDR_MAXSIZE       (((sizeof(UINT16)  +3)>>2)<<2)

#define MS_PS_RECORD_PROXY_FILTER_ADDR_MAXSIZE      (((sizeof(MS_NET_ADDR)*MS_CONFIG_LIMITS(MS_S_MAX_PROXY_FILTER_LIST_SIZE) +3)>>2)<<2)


/** Helper size macro */
#define MS_NETKEY_ENTRY_SIZE                        (sizeof(MS_NETKEY_ENTRY))
#define MS_ACCESS_MODEL_TYPE_SIZE                   (sizeof(MS_ACCESS_MODEL_TYPE))
/** Size */
#define MS_PS_RECORD_ELEMENTS_SIZE                  ((((sizeof(UINT16) + (sizeof(MS_ACCESS_ELEMENT_TYPE) * MS_CONFIG_LIMITS(MS_ACCESS_ELEMENT_COUNT)) + sizeof(composition_data_hdr))+3)>>2)<<2)
#define MS_PS_RECORD_MODELS_SIZE                    ((((sizeof(UINT16) + (MS_ACCESS_MODEL_TYPE_SIZE * (MS_CONFIG_LIMITS(MS_ACCESS_MODEL_COUNT))))+3)>>2)<<2)
#define MS_PS_RECORD_SUBNETS_SIZE                   ((((sizeof(UINT16) + sizeof(ms_iv_index)  + sizeof(ms_netkey_count) + (MS_NETKEY_ENTRY_SIZE * (MS_CONFIG_LIMITS(MS_MAX_SUBNETS) + MS_CONFIG_LIMITS(MS_MAX_LPNS))) \
                                                        +(sizeof(MS_NET_ADDR) * MS_CONFIG_LIMITS(MS_MAX_DEV_KEYS)) + sizeof(UINT16))+3)>>2)<<2)
#define MS_PS_RECORD_DEV_KEYS_SIZE                  ((((sizeof(UINT16) + sizeof(UINT16) + sizeof(UINT16) + (sizeof(MS_DEV_KEY_ENTRY) * MS_CONFIG_LIMITS(MS_MAX_DEV_KEYS)))+3)>>2)<<2)
#define MS_PS_RECORD_APP_KEYS_SIZE                  ((((sizeof(UINT16) + (sizeof(MS_APPKEY_ENTRY) * MS_CONFIG_LIMITS(MS_MAX_APPS)))+3)>>2)<<2)
#define MS_PS_RECORD_ELEMENT_ADDRS_SIZE             ((((sizeof(UINT16) + (sizeof(MS_ELEMENT_ADDR_ENTRY) * (1 + MS_CONFIG_LIMITS(MS_MAX_LPNS))))+3)>>2)<<2)
#define MS_PS_RECORD_VIRTUAL_ADDRS_SIZE             ((((sizeof(UINT16) + (sizeof(MS_VIRTUAL_ADDR_ENTRY) * MS_CONFIG_LIMITS(MS_MAX_VIRTUAL_ADDRS)))+3)>>2)<<2)
#define MS_PS_RECORD_NON_VIRTUAL_ADDRS_SIZE         ((((sizeof(UINT16) + (sizeof(MS_NON_VIRTUAL_ADDR_ENTRY) * MS_CONFIG_LIMITS(MS_MAX_NON_VIRTUAL_ADDRS)))+3)>>2)<<2)
#define MS_PS_RECORD_SEQ_NUMBER_SIZE                ((((sizeof(UINT32 /* net_seq_number_state.block_seq_num_max */))+3)>>2)<<2)
#define MS_PS_RECORD_TX_STATES_FEATURES_SIZE        ((((sizeof(UINT16) + sizeof(ms_tx_state) + sizeof(ms_features))+3)>>2)<<2)
#define MS_PS_RECORD_PROVISIONER_ADDR_SIZE          (((sizeof(UINT16)  +3)>>2)<<2)

#define MS_PS_RECORD_PROXY_FILTER_ADDR_SIZE          (((sizeof(MS_NET_ADDR)*MS_CONFIG_LIMITS(MS_PROXY_FILTER_LIST_SIZE) +3)>>2)<<2)


/** Offset */
#define MS_PS_RECORD_ELEMENTS_OFFSET                0
#define MS_PS_RECORD_MODELS_OFFSET                  (MS_PS_RECORD_ELEMENTS_OFFSET          + MS_PS_RECORD_ELEMENTS_MAXSIZE)
#define MS_PS_RECORD_SUBNETS_OFFSET                 (MS_PS_RECORD_MODELS_OFFSET            + MS_PS_RECORD_MODELS_MAXSIZE)
#define MS_PS_RECORD_DEV_KEYS_OFFSET                (MS_PS_RECORD_SUBNETS_OFFSET           + MS_PS_RECORD_SUBNETS_MAXSIZE)
#define MS_PS_RECORD_APP_KEYS_OFFSET                (MS_PS_RECORD_DEV_KEYS_OFFSET          + MS_PS_RECORD_DEV_KEYS_MAXSIZE)
#define MS_PS_RECORD_ELEMENT_ADDRS_OFFSET           (MS_PS_RECORD_APP_KEYS_OFFSET          + MS_PS_RECORD_APP_KEYS_MAXSIZE)
#define MS_PS_RECORD_VIRTUAL_ADDRS_OFFSET           (MS_PS_RECORD_ELEMENT_ADDRS_OFFSET     + MS_PS_RECORD_ELEMENT_ADDRS_MAXSIZE)
#define MS_PS_RECORD_NON_VIRTUAL_ADDRS_OFFSET       (MS_PS_RECORD_VIRTUAL_ADDRS_OFFSET     + MS_PS_RECORD_VIRTUAL_ADDRS_MAXSIZE)
#define MS_PS_RECORD_SEQ_NUMBER_OFFSET              (MS_PS_RECORD_NON_VIRTUAL_ADDRS_OFFSET + MS_PS_RECORD_NON_VIRTUAL_ADDRS_MAXSIZE)
#define MS_PS_RECORD_TX_STATES_FEATURES_OFFSET      (MS_PS_RECORD_SEQ_NUMBER_OFFSET        + MS_PS_RECORD_SEQ_NUMBER_MAXSIZE)
#define MS_PS_RECORD_PROVISIONER_ADDR_OFFSET        (MS_PS_RECORD_TX_STATES_FEATURES_OFFSET + MS_PS_RECORD_TX_STATES_FEATURES_MAXSIZE)

#define MS_PS_RECORD_PROXY_FILTER_ADDR_OFFSET       (MS_PS_RECORD_PROVISIONER_ADDR_OFFSET + MS_PS_RECORD_PROVISIONER_ADDR_MAXSIZE)

/* Macro definition for the total size of the Access Layer Persistent Storage. */
#define MS_PS_RECORD_CORE_MODULES_OFFSET           (MS_PS_RECORD_PROXY_FILTER_ADDR_OFFSET + MS_PS_RECORD_PROXY_FILTER_ADDR_MAXSIZE)

/**
    Locks the ACCESS Mutex which prevents any global variable being
    overwritten by any function. It returns an error if mutex lock fails.
*/
#define ACCESS_LOCK()\
    EM_MUTEX_LOCK(access_mutex, ACCESS)

/**
    Locks the ACCESS_mutex which prevents any global variable being
    overwritten by any function. To be used in void function as it
    returns no error.
*/
#define ACCESS_LOCK_VOID()\
    EM_MUTEX_LOCK_VOID(access_mutex, ACCESS)

/**
    Unlocks the ACCESS_mutex which realeses the global variables
    to be written into. It returns an error if mutex unlock fails.
*/
#define ACCESS_UNLOCK()\
    EM_MUTEX_UNLOCK(access_mutex, ACCESS)

/**
    Unlocks the ACCESS_mutex which realeses the global variables
    to be written into. To be used in void functions as it returns
    no error.
*/
#define ACCESS_UNLOCK_VOID()\
    EM_MUTEX_UNLOCK_VOID(access_mutex, ACCESS)


#define access_alloc_mem(size)\
    EM_alloc_mem(size)

#define access_free_mem(ptr)\
    EM_free_mem(ptr)

#ifndef ACCESS_NO_NULL_PARAM_CHECK
/** Null Check of Transport API Parameters */
#define ACCESS_NULL_CHECK(x) \
    if (NULL == (x)) \
    { \
        ACCESS_ERR(  \
                     "[ACCESS] NULL Pointer detected. Referrence Impossible\n"); \
        return ACCESS_NULL_PARAMETER_NOT_ALLOWED; \
    }
#else
#define ACCESS_NULL_CHECK(x)
#endif /* ACCESS_NO_NULL_PARAM_CHECK */

#ifndef MS_ACCESS_NO_RANGE_CHECK
/** Range Check for Transport API Parameters */
#define ACCESS_RANGE_CHECK_START(param, start) \
    if ( ! ((param) >= (start)) ) \
    { \
        ACCESS_ERR( \
                    "[ACCESS] ACCESS Range Check FAILED\n"); \
        return ACCESS_PARAMETER_OUTSIDE_RANGE; \
    }

#define ACCESS_RANGE_CHECK_END(param, end) \
    if ( ! ((param) <= (end)) ) \
    { \
        ACCESS_ERR( \
                    "[ACCESS] ACCESS Range Check FAILED\n"); \
        return ACCESS_PARAMETER_OUTSIDE_RANGE; \
    }

#define ACCESS_RANGE_CHECK(param, start, end) \
    if ( ! ( ((param) >= (start)) && ((param) <= (end)) ) ) \
    { \
        ACCESS_ERR( \
                    "[ACCESS] ACCESS Range Check FAILED\n"); \
        return ACCESS_PARAMETER_OUTSIDE_RANGE; \
    }

#else
#define ACCESS_RANGE_CHECK_START(param, start)
#define ACCESS_RANGE_CHECK_END(param, end)
#define ACCESS_RANGE_CHECK(param, start, end)
#endif /* ACCESS_NO_RANGE_CHECK */

/* Network IVI Mask */
#define ACCESS_NET_IVI_MASK            0x00000001

/* Network Sequence Number */
extern NET_SEQ_NUMBER_STATE net_seq_number_state;

extern UINT8   ms_ps_count;


/** Maximum number of Records in Persistent Storage */
#define MS_PS_ACCESS_MAX_RECORDS       12

/** Bitmask for all PS Access Record types */
#define MS_PS_ACCESS_ALL_RECORDS       ((1 << MS_PS_ACCESS_MAX_RECORDS) - 1)

/** Persistet Storage Records (bitfield values) */
#define MS_PS_RECORD_ELEMENTS           0x00000001
#define MS_PS_RECORD_MODELS             0x00000002
#define MS_PS_RECORD_SUBNETS            0x00000004
#define MS_PS_RECORD_DEV_KEYS           0x00000008
#define MS_PS_RECORD_APP_KEYS           0x00000010
#define MS_PS_RECORD_ELEMENT_ADDRS      0x00000020
#define MS_PS_RECORD_VIRTUAL_ADDRS      0x00000040
#define MS_PS_RECORD_NON_VIRTUAL_ADDRS  0x00000080
#define MS_PS_RECORD_SEQ_NUMBER         0x00000100
#define MS_PS_RECORD_TX_STATES_FEATURES 0x00000200
#define MS_PS_RECORD_PROVSIONER_ADDR    0x00000400
#define MS_PS_RECORD_PROXY_FILTER_ADDR  0x00000800



#ifdef MS_ACCESS_PUBLISH_TIMER_SUPPORT
#define MS_ACCESS_SET_PUBLICATION_CALLBACK(model_list_entity, model_ptr) \
    (model_list_entity).fixed.pub_cb = (model_ptr)->pub_cb
#else
#define MS_ACCESS_SET_PUBLICATION_CALLBACK(model_list_entity, model_ptr)
#endif /* MS_ACCESS_PUBLISH_TIMER_SUPPORT */

/* --------------------------------------------- Data Types/ Structures */
/**
    Composition Data Page 0 Header
*/
typedef struct _MS_ACCESS_COMPOSITION_DATA_PAGE_0_HDR
{
    /** CID: 16-bit Company Identifier assigned by BT SIG */
    UINT16    ms_access_cid;

    /** PID: 16-bit Product Identifier */
    UINT16    ms_access_pid;

    /** VID: 16-bit Product Version Identifier */
    UINT16    ms_access_vid;

    /**
        CRPL: 16-bit value representing the minimum number
        of replay protection list entries
    */
    UINT16    ms_access_crpl;

    /** Features: bit field indicating the device features */
    UINT16    ms_access_features;

} MS_ACCESS_COMPOSITION_DATA_PAGE_0_HDR;

/**
    Access Element data structure.
*/
typedef struct _MS_ACCESS_ELEMENT_TYPE
{
    /**
        Location descriptor.
        Defined in Bluetooth SIG GATT Namespace Descriptors section
        https://www.bluetooth.com/specifications/assigned-numbers/gatt-namespace-descriptors
    */
    UINT16 loc;

    /**
        Unicast Address assigned to the element
        during the provisioning procedure.

        Maintained in a separate MS_ELEMENT_ADDR_ENTRY
        data structure.
    */

    /** Number of SIG Model IDs */
    UINT8  num_s;

    /** Number of Vendor Model IDs */
    UINT8  num_v;

    /** Valid ? */
    UINT8  valid;

} MS_ACCESS_ELEMENT_TYPE;

#ifdef MS_ACCESS_PUBLISH_TIMER_SUPPORT
/* Periodic Step Timer data structure */
typedef struct _MS_ACCESS_PERIODIC_STEP_TIMER_TYPE
{
    /* Steps in 100ms resolution */
    UINT32 step_count;

    /* Associated Model Handle */
    MS_ACCESS_MODEL_HANDLE  handle;

    /* Expiry Counter */
    UINT32                  expiry_counter;

    /* Next Element in the Periodic Timer */
    struct _MS_ACCESS_PERIODIC_STEP_TIMER_TYPE* next;

} MS_ACCESS_PERIODIC_STEP_TIMER_TYPE;

typedef MS_ACCESS_PERIODIC_STEP_TIMER_TYPE*   MS_ACCESS_PERIODIC_STEP_TIMER_HANDLE;
#endif /* MS_ACCESS_PUBLISH_TIMER_SUPPORT */

/**
    Access Publication related meta information
    Many of the fields are similat to MS_ACCESS_PUBLISH_INFO
*/
typedef struct _MS_ACCESS_PUBLISH_META_INFO
{
    /** PublishAddress Handle */
    MS_ACCESS_ADDRESS_HANDLE addr_handle;

    /** AppKey Handle */
    UINT16          appkey_handle;

    /** CredentialFlag */
    UINT8           crden_flag;

    /** PublishTTL */
    UINT8           ttl;

    /** PublishPeriod */
    UINT8           period;

    /** Fast Period Divisor */
    UINT8           period_divisor;

    /** PublishRetransmitCount */
    UINT8           rtx_count;

    /** PublishRetransmitIntervalSteps */
    UINT8           rtx_interval_steps;

    #ifdef MS_ACCESS_PUBLISH_TIMER_SUPPORT
    /** Perioding Timer Handle */
    MS_ACCESS_PERIODIC_STEP_TIMER_HANDLE timer_handle;
    #endif /* MS_ACCESS_PUBLISH_TIMER_SUPPORT */

    /** Valid ? */
    UINT8  valid;

} MS_ACCESS_PUBLISH_META_INFO;

/**
    Access Model data structure.
*/
typedef struct _MS_ACCESS_MODEL_TYPE
{
    struct
    {
        /** Model ID */
        MS_ACCESS_MODEL_ID model_id;

        /** Associated Element Handle */
        MS_ACCESS_ELEMENT_HANDLE elem_handle;

        /**
            Callback function pointer to receive packets from the underlying
            protocol layers
        */
        MS_ACCESS_MODEL_CB cb;

        /** Number of Opcodes */
        UINT16             num_opcodes;

        /** List of Opcodes */
        DECL_CONST UINT32*   opcodes;

        /** Publish Meta Information */
        MS_ACCESS_PUBLISH_META_INFO publish;

        #ifdef MS_ACCESS_PUBLISH_TIMER_SUPPORT
        /**
            Callback function called when Publication Timer expires.
            Set to NULL if model does not support periodic publication.
        */
        MS_ACCESS_MODEL_PUBLISH_TIMEOUT_CB   pub_cb;
        #endif /* MS_ACCESS_PUBLISH_TIMER_SUPPORT */

        /** TBD: Subscription List */

        /** Valid ? */
        UINT8              valid;
    } fixed;

    struct
    {
        /** Bitarry to maintain AppKey mapping */
        MS_DEFINE_GLOBAL_ARRAY(UINT32, appkey_bitarray, BITARRAY_NUM_BLOCKS(MS_CONFIG_LIMITS(MS_MAX_APPS)));

        /** Bitarry to maintain Subscription List mapping */
        MS_DEFINE_GLOBAL_ARRAY(UINT32, subscription_bitarray, BITARRAY_NUM_BLOCKS(MS_CONFIG_LIMITS(MS_MAX_ADDRS)));
    } config;

} MS_ACCESS_MODEL_TYPE;

MS_DECLARE_GLOBAL_ARRAY(MS_ACCESS_MODEL_TYPE, ms_access_model_list, MS_CONFIG_LIMITS(MS_ACCESS_MODEL_COUNT));


/**
    Element Address Data Structure.
    Used to maintain element address of local device
    and also of friend devices (LPNs).
*/
typedef struct _MS_ELEMENT_ADDR_ENTRY
{
    /** Unicast Address of the first element */
    MS_NET_ADDR    uaddr;

    /** Number of Elements */
    UINT8         element_count;

} MS_ELEMENT_ADDR_ENTRY;

/**
    AppKey List

    - Config AppKey Add
    - Config AppKey Update
    - Config AppKey Delete
    - Config AppKey Get
    - Config AppKey List
*/
typedef struct _MS_APPKEY_ENTRY
{
    /** Associated Subnet Handle */
    MS_SUBNET_HANDLE    subnet_handle;

    /**
        AppKey
        [0]-th index: Current Key
        [1]-st index: Updated Key
    */
    UINT8   app_key[2][16];

    /**
        AppKey Index.
        - 12 bit value
        - Ranging from 0x000 to 0xFFF inclusive.
    */
    UINT16  appkey_index;

    /**
        Application Key Identifier
        [0]-th index: Current Key AID
        [1]-st index: Updated Key AID
    */
    UCHAR   aid[2];

    /** Key Refresh Phase State */
    UCHAR  key_refresh_phase;

} MS_APPKEY_ENTRY;

MS_DECLARE_GLOBAL_ARRAY(MS_APPKEY_ENTRY, ms_appkey_table, MS_CONFIG_LIMITS(MS_MAX_APPS));


/**
    NetKey List
*/
typedef struct _MS_NETKEY_ENTRY
{
    struct
    {
        /**
            Net Key Index.
            - 12 bit value
            - Ranging from 0x000 to 0xFFF inclusive.

            Net Key Index will be same in Key Refresh.
        */
        UINT16  netkey_index;

        /**
            Network Key
            [0]-th index: Current Key
            [1]-st index: Updated Key
        */
        UINT8   net_key[2][16];

        /** Privacy Key */
        UINT8   privacy_key[16];

        /** Encryption Key */
        UINT8   encrypt_key[16];

        /**
            NID
            [0]-th index: Current Key NID
            [1]-st index: Updated Key NID
        */
        UINT8   nid[2];

        /* TODO: Define below fields */
        /** Node Identity State */

        /** Beacon Key */
        UCHAR beacon_key[16];

        /** Network ID */
        UCHAR network_id[8];

        /** Identity Key */
        /* TODO: Do we need if Proxy Feature is not supported */
        UCHAR identity_key[16];

        #ifdef MS_PROXY_SUPPORT
        /** Node Identity State */
        UCHAR  node_id_state;
        #endif /* MS_PROXY_SUPPORT */

        /** Key Refresh Phase State */
        UCHAR  key_refresh_phase;
    } fixed;

    struct
    {
        /** Bitarry to maintain AppKey mapping */
        MS_DEFINE_GLOBAL_ARRAY(UINT32, appkey_bitarray, BITARRAY_NUM_BLOCKS(MS_CONFIG_LIMITS(MS_MAX_APPS)));

        /** Bitarry to maintain Associated Friend/LPN Credentials mapping */
        /** 0-th location of Friend will contain associated master subnet handle */
        MS_DEFINE_GLOBAL_ARRAY(UINT32, friend_bitarray, BITARRAY_NUM_BLOCKS(MS_CONFIG_LIMITS(MS_MAX_LPNS)));
    } config;

} MS_NETKEY_ENTRY;

/**
    DeviceKey Data Structure, containing Primary Element Address and
    number of elements.
*/
typedef struct _MS_DEV_KEY_ENTRY
{
    /** Device Key */
    UINT8   dev_key[16];

    /** Unicast Address of the first element */
    MS_NET_ADDR    uaddr;

    /** Number of Elements */
    UCHAR num_elements;

} MS_DEV_KEY_ENTRY;

/**
    Virtual Address Data Structure
*/
typedef struct _MS_VIRTUAL_ADDR_ENTRY
{
    /** Label UUID */
    UINT8          label[MS_LABEL_UUID_LENGTH];

    /**
        Virtual Address calculated from Label.

        Use this also as valid/free flag.
        When set to ZERO, the entry is free.
    */
    MS_NET_ADDR    vaddr;

    /**
        Index 0 - Publication count.
        Index 1 - Subscription count.

        When both publish and subscribe counts reach ZERO,
        the virtual address will be deleted.
    */
    UINT8          count[2];

} MS_VIRTUAL_ADDR_ENTRY;

/**
    Non-Virtual Address Data Structure
*/
typedef struct _MS_NON_VIRTUAL_ADDR_ENTRY
{
    /**
        Non-Virtual Address.

        Use this also as valid/free flag.
        When set to ZERO, the entry is free.
    */
    MS_NET_ADDR    vaddr;

    /**
        Index 0 - Publication count.
        Index 1 - Subscription count.

        When both publish and subscribe counts reach ZERO,
        the non-virtual address will be deleted.
    */
    UINT8          count[2];

} MS_NON_VIRTUAL_ADDR_ENTRY;

/**
    Network/Relay Transmit

    - Config Network/Relay Transmit Get
    - Config Network/Relay Transmit Set
*/
typedef struct _MS_CONFIG_TRANSMIT
{
    /** Transmit Count */
    UINT8    tx_count;

    /** Transmit Interval Steps */
    UINT8   tx_steps;

} MS_CONFIG_TRANSMIT;

/**
    Address Specific Operation Type.
    Publish or Subscribe.
*/
typedef UINT8 MS_ADDR_OP_TYPE;

/* --------------------------------------------- External Global Definitions */
/* Module Mutex */
MS_DEFINE_MUTEX_TYPE(extern, access_mutex);

/** Elemement List */
MS_DECLARE_GLOBAL_ARRAY(MS_ACCESS_ELEMENT_TYPE, ms_access_element_list, MS_CONFIG_LIMITS(MS_ACCESS_ELEMENT_COUNT));

/** Model List */
MS_DECLARE_GLOBAL_ARRAY(MS_ACCESS_MODEL_TYPE, ms_access_model_list, MS_CONFIG_LIMITS(MS_ACCESS_MODEL_COUNT));

/** Composition data page 0 header */
extern MS_ACCESS_COMPOSITION_DATA_PAGE_0_HDR composition_data_hdr;

/**
    List of Element Address Entries.

    0-th entry is for local device.
    Rest for the friend elements.
*/
MS_DECLARE_GLOBAL_ARRAY(MS_ELEMENT_ADDR_ENTRY, ms_element_addr_table, 1 + MS_CONFIG_LIMITS(MS_MAX_LPNS));

/** List of AppKey Entries */
MS_DECLARE_GLOBAL_ARRAY(MS_APPKEY_ENTRY, ms_appkey_table, MS_CONFIG_LIMITS(MS_MAX_APPS));

/**
    List of Subnet Entries.
    Network Keys associated with Friends (LPNs) are also maintained in the same table.
*/
MS_DECLARE_GLOBAL_ARRAY(MS_NETKEY_ENTRY, ms_subnet_table, MS_CONFIG_LIMITS(MS_MAX_SUBNETS) + MS_CONFIG_LIMITS(MS_MAX_LPNS));
extern UINT16          ms_netkey_count;

/**
    List of Key Refresh whitelist table.
*/
MS_DECLARE_GLOBAL_ARRAY(MS_NET_ADDR, ms_key_refresh_whitelist, (MS_CONFIG_LIMITS(MS_MAX_DEV_KEYS)));
extern UINT16          ms_key_refresh_count;

/** List of Device Key Entries */
MS_DECLARE_GLOBAL_ARRAY(MS_DEV_KEY_ENTRY, ms_dev_key_table, MS_CONFIG_LIMITS(MS_MAX_DEV_KEYS));

/** Count of valid Device Key Entries */
extern UINT16 ms_dev_key_table_entries;

/** Count of Device Key Pointer Entries */
extern UINT16 ms_dev_key_table_pointer;


/** List of Virtual Address Entries */
MS_DECLARE_GLOBAL_ARRAY(MS_VIRTUAL_ADDR_ENTRY, ms_virtual_addr_table, MS_CONFIG_LIMITS(MS_MAX_VIRTUAL_ADDRS));

/** List of non-Virtual Address Entries */
MS_DECLARE_GLOBAL_ARRAY(MS_NON_VIRTUAL_ADDR_ENTRY, ms_non_virtual_addr_table, MS_CONFIG_LIMITS(MS_MAX_NON_VIRTUAL_ADDRS));

/**
    Network/Relay Transmit State.
    - Composite state of Network/Relay Transmit Count (3-bit) and
     Network/Relay Transmit Inteval Steps (5-bit)
*/
extern MS_CONFIG_TRANSMIT ms_tx_state[2];

/**
    Mesh Features (Proxy/Friend/Relay/Low Power)
*/
extern UINT8 ms_features;

extern UINT8 ms_max_apps;

extern UINT8 ms_max_virtual_addrs;
extern UINT8 ms_max_non_virtual_addrs;

extern MS_ACCESS_COMPOSITION_DATA_PAGE_0_HDR composition_data_hdr;
extern UINT16          ms_netkey_count;
extern MS_CONFIG_TRANSMIT ms_tx_state[2];
extern UINT8 ms_features;


MS_DECLARE_GLOBAL_ARRAY(MS_NET_ADDR, ms_key_refresh_whitelist, (MS_CONFIG_LIMITS(MS_MAX_DEV_KEYS)));


extern UINT8 ms_access_element_count;
extern UINT8 ms_access_model_count;
extern UINT8 ms_max_subnets,ms_max_lpns;



/** Address Operation Type - Publish - also used as index */
#define MS_ADDR_OP_TYPE_PUBLISH      0x00
/** Address Operation Type - Subscribe - also used as index */
#define MS_ADDR_OP_TYPE_SUBSCRIBE    0x01

/* --------------------------------------------- Functions */
/**
    \brief Initializes Supported Features.

    \par Description
    This routine initializes supported feautures, which can be one or more
    of the following
    - Relay, Proxy, Friend, Low Power
*/
void ms_access_init_supported_features(void);

/**
    \par Description
    This function handles the incoming data received over upper transport layer.

    \param [in] net_hdr
           Received Network Packet Header
    \param [in] subnet_handle
           Handle identifying associated subnet on which the packet is received
    \param [in] appkey_handle
           Handle identifying application key associated with the received packet
    \param [in] pdata
           The incoming Data Packet
    \param [in] pdatalen
           Size of the incoming Data Packet
*/
void access_pkt_in
(
    /* IN */ MS_NET_HEADER*      net_hdr,
    /* IN */ MS_SUBNET_HANDLE    subnet_handle,
    /* IN */ MS_APPKEY_HANDLE    appkey_handle,
    /* IN */ UCHAR*              pdata,
    /* IN */ UINT16              pdatalen
);

API_RESULT ms_access_allocate_element(/* OUT */ MS_ACCESS_ELEMENT_HANDLE*    handle);

/* Function to search and allocate a free model */
API_RESULT ms_access_search_and_allocate_model
(
    /* IN */  MS_ACCESS_MODEL*    model,
    /* OUT */ UINT16*             id
);
void ms_access_handle_rx_opcode
(
    /* IN */ MS_NET_HEADER*      net_hdr,
    /* IN */ MS_SUBNET_HANDLE    subnet_handle,
    /* IN */ MS_APPKEY_HANDLE    appkey_handle,
    /* IN */ UINT32              opcode,
    /* IN */ UCHAR*              udata,
    /* IN */ UINT16              udatalen
);
API_RESULT ms_access_is_opcode_in_model
(
    /* IN */ UINT32  opcode,
    /* IN */ UINT32  model_index
);
void ms_access_get_element_models
(
    /* IN */    UINT32   element_index,
    /* OUT */   UINT32* model_indices,
    /* INOUT */ UINT32* model_count
);

/* Configuration Manager related internal functions */
API_RESULT ms_access_cm_init(void);

/** Init Subnet/Net Key Table */
void ms_access_cm_init_subnet_table(void);

/** This routines adds/updates netkeys */
void ms_access_cm_save_netkey_at_offset
(
    /* IN */ MS_SUBNET_HANDLE    handle,
    /* IN */ UINT16              netkey_index,
    /* IN */ UINT8*              net_key,
    /* IN */ UINT8               offset
);

/* This function creates keys associated with Netkey */
void ms_access_cm_create_keys_from_netkey
(
    /* IN */ MS_SUBNET_HANDLE    handle
);

/** Update Key Refresh Phase for Netkey */
UINT8 ms_access_cm_update_key_refresh_phase
(
    /* IN */ MS_SUBNET_HANDLE    handle,
    /* IN */ UINT8               key_refresh_phase
);

/** Update Key Refresh Phase for all associated Appkey */
void ms_access_cm_refresh_all_appkeys
(
    /* IN */ MS_SUBNET_HANDLE    subnet_handle,
    /* IN */ UINT8               key_refresh_phase
);

/** Update all associated Friend Credentials */
void ms_access_cm_refresh_all_friend_credentials
(
    /* IN */ MS_SUBNET_HANDLE    subnet_handle,
    /* IN */ UINT8               key_refresh_phase
);

/* Friend Credentials refresh */
void ms_access_cm_friend_credentials_refresh
(
    /* IN */ MS_SUBNET_HANDLE    friend_subnet_handle,
    /* IN */ MS_SUBNET_HANDLE    master_subnet_handle,
    /* IN */ UINT8               key_refresh_phase
);

/** Update Key Refresh Phase for Appkey */
UINT8 ms_access_cm_appkey_refresh
(
    /* IN */ MS_APPKEY_HANDLE    handle,
    /* IN */ UINT8               key_refresh_phase
);

/** Init App Key Table */
void ms_access_cm_init_appkey_table(void);

/** Init Device Key Table */
void ms_access_cm_init_dev_key_table(void);

/** Search and add an entry to Virtual Address Table */
API_RESULT ms_search_and_add_virtual_address
(
    /* IN */  UCHAR*                     label,
    /* IN */  MS_ADDR_OP_TYPE            type,
    /* OUT */ UINT16*                    addr,
    /* OUT */ MS_ACCESS_ADDRESS_HANDLE* handle
);

/** Search an entry to Virtual Address Table */
API_RESULT ms_search_virtual_address_on_label
(
    /* IN */  UCHAR*                     label,
    /* IN */  MS_ADDR_OP_TYPE            type,
    /* OUT */ UINT16*                    addr,
    /* OUT */ MS_ACCESS_ADDRESS_HANDLE* handle
);

API_RESULT ms_search_virtual_address
(
    /* IN */  MS_NET_ADDR*               addr,
    /* IN */  MS_ADDR_OP_TYPE            type,
    /* OUT */ MS_ACCESS_ADDRESS_HANDLE* handle
);

/** Search and add an entry to Non-Virtual Address Table */
API_RESULT ms_search_and_add_address
(
    /* IN */  MS_ACCESS_MODEL_HANDLE    model_handle,
    /* IN */  MS_NET_ADDR*               addr,
    /* IN */  MS_ADDR_OP_TYPE            type,
    /* OUT */ MS_ACCESS_ADDRESS_HANDLE* handle
);

/** Search an entry to Non-Virtual Address Table */
API_RESULT ms_search_address
(
    /* IN */  MS_NET_ADDR*               addr,
    /* IN */  MS_ADDR_OP_TYPE            type,
    /* OUT */ MS_ACCESS_ADDRESS_HANDLE* handle
);

/** Delete an entry from Non-Virtual/Virtual Address Table */
API_RESULT ms_delete_address
(
    /* IN */ MS_ACCESS_ADDRESS_HANDLE addr_handle,
    /* IN */ MS_ADDR_OP_TYPE            type
);

/** Get an entry from Non-Virtual/Virtual Address Table */
API_RESULT ms_get_address
(
    /* IN */  MS_ACCESS_ADDRESS_HANDLE   addr_handle,
    /* IN */  MS_ADDR_OP_TYPE            type,
    /* OUT */ MS_NET_ADDR*               addr
);

/** Delete appkey */
void ms_delete_appkey(/* IN */ UINT32 key_index);


#ifdef MS_STORAGE
    void access_ps_init (void);

    /**
    \brief Store Access Layer information in persistent storage.

    \par Description
    This function saves in RAM data structures/configurations in persistent storage.
    This function will be called whenever there is change in any of the data
    structures/configurations which need to be stored.

    \param [in] records    This is a bitmask identifying the records to be stored.
    */
    void ms_access_ps_store (/* IN */ UINT32 records);

    /**
    \brief Load Access Layer information from persistent storage.

    \par Description
    This function loads data structures/configurations which are already
    saved in persistent storage to in RAM data structures.
    This function will generally be called only once during the power of
    initialization.

    \param [in] records    This is a bitmask identifying the records to be loaded.
    */
    void ms_access_ps_load (/* IN */ UINT32 records);

#else

    #define access_ps_init()
    #define ms_access_ps_store(records)
    #define ms_access_ps_load(records)

#endif /* MS_STORAGE */

#ifdef MS_ACCESS_PUBLISH_TIMER_SUPPORT
/* Periodic Step Timer - Initialization Routine */
API_RESULT ms_access_init_periodic_step_timer(void);

/* Periodic Step Timer - Start Routine */
API_RESULT ms_access_start_periodic_step_timer
(
    /* IN */  UINT8                                  period,
    /* IN */  UINT8                                  period_divisor,
    /* IN */  MS_ACCESS_MODEL_HANDLE*                handle,
    /* OUT */ MS_ACCESS_PERIODIC_STEP_TIMER_HANDLE* timer_handle
);

/* Periodic Step Timer - Stop Routine */
API_RESULT ms_access_stop_periodic_step_timer
(
    /* IN */ MS_ACCESS_PERIODIC_STEP_TIMER_HANDLE timer_handle
);

#define MS_ACCESS_INIT_PERIODIC_STEP_TIMER() \
    ms_access_init_periodic_step_timer()

#define MS_ACCESS_START_PERIODIC_STEP_TIMER(period, period_divisor, handle, timer_handle) \
    ms_access_start_periodic_step_timer((period), (period_divisor), (handle), (timer_handle))

#define MS_ACCESS_STOP_PERIODIC_STEP_TIMER(publish) \
    if (NULL != (publish).timer_handle) \
    { \
        ms_access_stop_periodic_step_timer((publish).timer_handle); \
        \
        /* TODO: Check the return value */ \
        (publish).timer_handle = NULL; \
    }
#else
#define MS_ACCESS_INIT_PERIODIC_STEP_TIMER()

#define MS_ACCESS_START_PERIODIC_STEP_TIMER(period, period_divisor, handle, timer_handle) \
    API_FAILURE

#define MS_ACCESS_STOP_PERIODIC_STEP_TIMER(publish)
#endif /* MS_ACCESS_PUBLISH_TIMER_SUPPORT */

#endif /* _H_ACCESS_INTERNAL_ */

