stack/btm/btm_ble_int_types.h - platform/system/bt - Git at Google

 /******************************************************************************
  *
  *  Copyright 1999-2012 Broadcom Corporation
  *
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.
  *  You may obtain a copy of the License at:
  *
  *  http://www.apache.org/licenses/LICENSE-2.0
  *
  *  Unless required by applicable law or agreed to in writing, software
  *  distributed under the License is distributed on an "AS IS" BASIS,
  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  *  See the License for the specific language governing permissions and
  *  limitations under the License.
  *
  ******************************************************************************/

 #ifndef BTM_BLE_INT_TYPES_H
 #define BTM_BLE_INT_TYPES_H

 #include "osi/include/alarm.h"
 #include "stack/btm/neighbor_inquiry.h"
 #include "stack/include/btm_ble_api_types.h"

 /* scanning enable status */
 #define BTM_BLE_SCAN_ENABLE 0x01
 #define BTM_BLE_SCAN_DISABLE 0x00

 /* advertising enable status */
 #define BTM_BLE_ADV_ENABLE 0x01
 #define BTM_BLE_ADV_DISABLE 0x00

 #define BTM_BLE_AD_DATA_LEN 31

 #define BTM_BLE_DUPLICATE_ENABLE 1
 #define BTM_BLE_DUPLICATE_DISABLE 0

 /* Interval(scan_int) = 11.25 ms= 0x0010 * 0.625 ms */
 #define BTM_BLE_GAP_DISC_SCAN_INT 18
 /* scan_window = 11.25 ms= 0x0010 * 0.625 ms */
 #define BTM_BLE_GAP_DISC_SCAN_WIN 18
 /* Tgap(gen_disc) = 1.28 s= 512 * 0.625 ms */
 #define BTM_BLE_GAP_ADV_INT 512
 /* Tgap(lim_timeout) = 180s max */
 #define BTM_BLE_GAP_LIM_TIMEOUT_MS (180 * 1000)
 /* Interval(scan_int) = 5s= 8000 * 0.625 ms */
 #define BTM_BLE_LOW_LATENCY_SCAN_INT 8000
 /* scan_window = 5s= 8000 * 0.625 ms */
 #define BTM_BLE_LOW_LATENCY_SCAN_WIN 8000

 /* TGAP(adv_fast_interval1) = 30(used) ~ 60 ms  = 48 *0.625 */
 #define BTM_BLE_GAP_ADV_FAST_INT_1 48
 /* TGAP(adv_fast_interval2) = 100(used) ~ 150 ms = 160 * 0.625 ms */
 #define BTM_BLE_GAP_ADV_FAST_INT_2 160
 /* Tgap(adv_slow_interval) = 1.28 s= 512 * 0.625 ms */
 #define BTM_BLE_GAP_ADV_SLOW_INT 2048
 /* Tgap(dir_conn_adv_int_max) = 500 ms = 800 * 0.625 ms */
 #define BTM_BLE_GAP_ADV_DIR_MAX_INT 800
 /* Tgap(dir_conn_adv_int_min) = 250 ms = 400 * 0.625 ms */
 #define BTM_BLE_GAP_ADV_DIR_MIN_INT 400

 #define BTM_BLE_GAP_FAST_ADV_TIMEOUT_MS (30 * 1000)

 typedef enum : uint8_t {
   BTM_BLE_SEC_REQ_ACT_NONE = 0,
   /* encrypt the link using current key or key refresh */
   BTM_BLE_SEC_REQ_ACT_ENCRYPT = 1,
   BTM_BLE_SEC_REQ_ACT_PAIR = 2,
   /* discard the sec request while encryption is started but not completed */
   BTM_BLE_SEC_REQ_ACT_DISCARD = 3,
 } tBTM_BLE_SEC_REQ_ACT;

 #define BTM_VSC_CHIP_CAPABILITY_L_VERSION 55
 #define BTM_VSC_CHIP_CAPABILITY_M_VERSION 95
 #define BTM_VSC_CHIP_CAPABILITY_S_VERSION 98

 typedef struct {
   uint16_t data_mask;
   uint8_t* p_flags;
   uint8_t ad_data[BTM_BLE_AD_DATA_LEN];
   uint8_t* p_pad;
 } tBTM_BLE_LOCAL_ADV_DATA;

 #define BTM_BLE_ISVALID_PARAM(x, min, max) \
   (((x) >= (min) && (x) <= (max)) || ((x) == BTM_BLE_CONN_PARAM_UNDEF))

 typedef struct {
   uint16_t discoverable_mode;
   uint16_t connectable_mode;
   uint32_t scan_window;
   uint32_t scan_interval;
   uint8_t scan_type;             /* current scan type: active or passive */

   tBTM_BLE_AFP afp; /* advertising filter policy */
   tBTM_BLE_SFP sfp; /* scanning filter policy */

   tBLE_ADDR_TYPE adv_addr_type;
   uint8_t evt_type;

   uint8_t adv_mode;
   void enable_advertising_mode() { adv_mode = BTM_BLE_ADV_ENABLE; }
   void disable_advertising_mode() { adv_mode = BTM_BLE_ADV_DISABLE; }
   bool is_advertising_mode_enabled() const {
     return (adv_mode == BTM_BLE_ADV_ENABLE);
   }

   tBLE_BD_ADDR direct_bda;
   tBTM_BLE_EVT directed_conn;
   bool fast_adv_on;
   alarm_t* fast_adv_timer;

   /* inquiry BD addr database */
   tBTM_BLE_LOCAL_ADV_DATA adv_data;
   tBTM_BLE_ADV_CHNL_MAP adv_chnl_map;

   alarm_t* inquiry_timer;
   bool scan_rsp;
   uint8_t state; /* Current state that the inquiry process is in */
 } tBTM_BLE_INQ_CB;

 /* random address resolving complete callback */
 typedef void(tBTM_BLE_RESOLVE_CBACK)(void* match_rec, void* p);

 typedef void(tBTM_BLE_ADDR_CBACK)(const RawAddress& static_random, void* p);

 /* random address management control block */
 typedef struct {
   tBLE_ADDR_TYPE own_addr_type; /* local device LE address type */
   RawAddress private_addr;
   alarm_t* refresh_raddr_timer;
 } tBTM_LE_RANDOM_CB;

 /* acceptlist using state as a bit mask */
 constexpr uint8_t BTM_BLE_WL_IDLE = 0;
 constexpr uint8_t BTM_BLE_ACCEPTLIST_INIT = 1;

 /* resolving list using state as a bit mask */
 enum : uint8_t {
   BTM_BLE_RL_IDLE = 0,
   BTM_BLE_RL_INIT = (1 << 0),
   BTM_BLE_RL_SCAN = (1 << 1),
   BTM_BLE_RL_ADV = (1 << 2),
 };
 typedef uint8_t tBTM_BLE_RL_STATE;

 typedef struct { void* p_param; } tBTM_BLE_CONN_REQ;

 /* LE state request */
 #define BTM_BLE_STATE_INVALID 0
 #define BTM_BLE_STATE_INIT 2
 #define BTM_BLE_STATE_MAX 11

 #define BTM_BLE_STATE_CONN_ADV_BIT 0x0001
 #define BTM_BLE_STATE_INIT_BIT 0x0002
 #define BTM_BLE_STATE_CENTRAL_BIT 0x0004
 #define BTM_BLE_STATE_PERIPHERAL_BIT 0x0008
 #define BTM_BLE_STATE_LO_DUTY_DIR_ADV_BIT 0x0010
 #define BTM_BLE_STATE_HI_DUTY_DIR_ADV_BIT 0x0020
 #define BTM_BLE_STATE_NON_CONN_ADV_BIT 0x0040
 #define BTM_BLE_STATE_PASSIVE_SCAN_BIT 0x0080
 #define BTM_BLE_STATE_ACTIVE_SCAN_BIT 0x0100
 #define BTM_BLE_STATE_SCAN_ADV_BIT 0x0200
 typedef uint16_t tBTM_BLE_STATE_MASK;

 #define BTM_BLE_STATE_ALL_MASK 0x03ff
 #define BTM_BLE_STATE_ALL_ADV_MASK                                  \
   (BTM_BLE_STATE_CONN_ADV_BIT | BTM_BLE_STATE_LO_DUTY_DIR_ADV_BIT | \
    BTM_BLE_STATE_HI_DUTY_DIR_ADV_BIT | BTM_BLE_STATE_SCAN_ADV_BIT)
 #define BTM_BLE_STATE_ALL_CONN_MASK \
   (BTM_BLE_STATE_CENTRAL_BIT | BTM_BLE_STATE_PERIPHERAL_BIT)

 typedef struct {
   RawAddress* resolve_q_random_pseudo;
   uint8_t* resolve_q_action;
   uint8_t q_next;
   uint8_t q_pending;
 } tBTM_BLE_RESOLVE_Q;

 /* BLE privacy mode */
 #define BTM_PRIVACY_NONE 0 /* BLE no privacy */
 #define BTM_PRIVACY_1_1 1  /* BLE privacy 1.1, do not support privacy 1.0 */
 #define BTM_PRIVACY_1_2 2  /* BLE privacy 1.2 */
 #define BTM_PRIVACY_MIXED \
   3 /* BLE privacy mixed mode, broadcom propietary mode */
 typedef uint8_t tBTM_PRIVACY_MODE;

 /* Define BLE Device Management control structure
 */
 constexpr uint8_t kBTM_BLE_INQUIRY_ACTIVE = 0x10;
 constexpr uint8_t kBTM_BLE_OBSERVE_ACTIVE = 0x80;
 constexpr size_t kCentralAndPeripheralCount = 2;

 typedef struct {
  private:
   uint8_t scan_activity_; /* LE scan activity mask */

  public:
   bool is_ble_inquiry_active() const {
     return (scan_activity_ & kBTM_BLE_INQUIRY_ACTIVE);
   }
   bool is_ble_observe_active() const {
     return (scan_activity_ & kBTM_BLE_OBSERVE_ACTIVE);
   }

   void set_ble_inquiry_active() { scan_activity_ |= kBTM_BLE_INQUIRY_ACTIVE; }
   void set_ble_observe_active() { scan_activity_ |= kBTM_BLE_OBSERVE_ACTIVE; }

   void reset_ble_inquiry() { scan_activity_ &= ~kBTM_BLE_INQUIRY_ACTIVE; }
   void reset_ble_observe() { scan_activity_ &= ~kBTM_BLE_OBSERVE_ACTIVE; }

   bool is_ble_scan_active() const {
     return (is_ble_inquiry_active() || is_ble_observe_active());
   }

   /*****************************************************
   **      BLE Inquiry
   *****************************************************/
   tBTM_BLE_INQ_CB inq_var;

   /* observer callback and timer */
   tBTM_INQ_RESULTS_CB* p_obs_results_cb;
   tBTM_CMPL_CB* p_obs_cmpl_cb;
   alarm_t* observer_timer;

   /* background connection procedure cb value */
   uint16_t scan_int;
   uint16_t scan_win;

   /* acceptlist information */
   uint8_t wl_state;
   void set_acceptlist_process_in_progress() {
     wl_state |= BTM_BLE_ACCEPTLIST_INIT;
   }
   void reset_acceptlist_process_in_progress() {
     wl_state &= ~BTM_BLE_ACCEPTLIST_INIT;
   }
   bool is_acceptlist_in_progress() const {
     return wl_state & BTM_BLE_ACCEPTLIST_INIT;
   }

  private:
   enum : uint8_t { /* BLE connection state */
                    BLE_CONN_IDLE = 0,
                    BLE_CONNECTING = 2,
                    BLE_CONN_CANCEL = 3,
   } conn_state_{BLE_CONN_IDLE};

  public:
   bool is_connection_state_idle() const { return conn_state_ == BLE_CONN_IDLE; }
   bool is_connection_state_connecting() const {
     return conn_state_ == BLE_CONNECTING;
   }
   bool is_connection_state_cancelled() const {
     return conn_state_ == BLE_CONN_CANCEL;
   }
   void set_connection_state_idle() { conn_state_ = BLE_CONN_IDLE; }
   void set_connection_state_connecting() { conn_state_ = BLE_CONNECTING; }
   void set_connection_state_cancelled() { conn_state_ = BLE_CONN_CANCEL; }

   /* random address management control block */
   tBTM_LE_RANDOM_CB addr_mgnt_cb;

   tBTM_PRIVACY_MODE privacy_mode;    /* privacy mode */
   uint8_t resolving_list_avail_size; /* resolving list available size */
   tBTM_BLE_RESOLVE_Q resolving_list_pend_q; /* Resolving list queue */
   tBTM_BLE_RL_STATE suspended_rl_state;     /* Suspended resolving list state */
   uint8_t* irk_list_mask; /* IRK list availability mask, up to max entry bits */
   tBTM_BLE_RL_STATE rl_state; /* Resolving list state */

   /* current BLE link state */
   tBTM_BLE_STATE_MASK cur_states; /* bit mask of tBTM_BLE_STATE */

   uint8_t link_count[kCentralAndPeripheralCount]; /* total link count central
                                                      and peripheral*/
 } tBTM_BLE_CB;

 #endif  // BTM_BLE_INT_TYPES_H
	/******************************************************************************
	*
	* Copyright 1999-2012 Broadcom Corporation
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at:
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*
	******************************************************************************/

	#ifndef BTM_BLE_INT_TYPES_H
	#define BTM_BLE_INT_TYPES_H

	#include "osi/include/alarm.h"
	#include "stack/btm/neighbor_inquiry.h"
	#include "stack/include/btm_ble_api_types.h"

	/* scanning enable status */
	#define BTM_BLE_SCAN_ENABLE 0x01
	#define BTM_BLE_SCAN_DISABLE 0x00

	/* advertising enable status */
	#define BTM_BLE_ADV_ENABLE 0x01
	#define BTM_BLE_ADV_DISABLE 0x00

	#define BTM_BLE_AD_DATA_LEN 31

	#define BTM_BLE_DUPLICATE_ENABLE 1
	#define BTM_BLE_DUPLICATE_DISABLE 0

	/* Interval(scan_int) = 11.25 ms= 0x0010 * 0.625 ms */
	#define BTM_BLE_GAP_DISC_SCAN_INT 18
	/* scan_window = 11.25 ms= 0x0010 * 0.625 ms */
	#define BTM_BLE_GAP_DISC_SCAN_WIN 18
	/* Tgap(gen_disc) = 1.28 s= 512 * 0.625 ms */
	#define BTM_BLE_GAP_ADV_INT 512
	/* Tgap(lim_timeout) = 180s max */
	#define BTM_BLE_GAP_LIM_TIMEOUT_MS (180 * 1000)
	/* Interval(scan_int) = 5s= 8000 * 0.625 ms */
	#define BTM_BLE_LOW_LATENCY_SCAN_INT 8000
	/* scan_window = 5s= 8000 * 0.625 ms */
	#define BTM_BLE_LOW_LATENCY_SCAN_WIN 8000

	/* TGAP(adv_fast_interval1) = 30(used) ~ 60 ms = 48 0.625 /
	#define BTM_BLE_GAP_ADV_FAST_INT_1 48
	/* TGAP(adv_fast_interval2) = 100(used) ~ 150 ms = 160 * 0.625 ms */
	#define BTM_BLE_GAP_ADV_FAST_INT_2 160
	/* Tgap(adv_slow_interval) = 1.28 s= 512 * 0.625 ms */
	#define BTM_BLE_GAP_ADV_SLOW_INT 2048
	/* Tgap(dir_conn_adv_int_max) = 500 ms = 800 * 0.625 ms */
	#define BTM_BLE_GAP_ADV_DIR_MAX_INT 800
	/* Tgap(dir_conn_adv_int_min) = 250 ms = 400 * 0.625 ms */
	#define BTM_BLE_GAP_ADV_DIR_MIN_INT 400

	#define BTM_BLE_GAP_FAST_ADV_TIMEOUT_MS (30 * 1000)

	typedef enum : uint8_t {
	BTM_BLE_SEC_REQ_ACT_NONE = 0,
	/* encrypt the link using current key or key refresh */
	BTM_BLE_SEC_REQ_ACT_ENCRYPT = 1,
	BTM_BLE_SEC_REQ_ACT_PAIR = 2,
	/* discard the sec request while encryption is started but not completed */
	BTM_BLE_SEC_REQ_ACT_DISCARD = 3,
	} tBTM_BLE_SEC_REQ_ACT;

	#define BTM_VSC_CHIP_CAPABILITY_L_VERSION 55
	#define BTM_VSC_CHIP_CAPABILITY_M_VERSION 95
	#define BTM_VSC_CHIP_CAPABILITY_S_VERSION 98

	typedef struct {
	uint16_t data_mask;
	uint8_t* p_flags;
	uint8_t ad_data[BTM_BLE_AD_DATA_LEN];
	uint8_t* p_pad;
	} tBTM_BLE_LOCAL_ADV_DATA;

	#define BTM_BLE_ISVALID_PARAM(x, min, max) \
	(((x) >= (min) && (x) <= (max)) \|\| ((x) == BTM_BLE_CONN_PARAM_UNDEF))

	typedef struct {
	uint16_t discoverable_mode;
	uint16_t connectable_mode;
	uint32_t scan_window;
	uint32_t scan_interval;
	uint8_t scan_type; /* current scan type: active or passive */

	tBTM_BLE_AFP afp; /* advertising filter policy */
	tBTM_BLE_SFP sfp; /* scanning filter policy */

	tBLE_ADDR_TYPE adv_addr_type;
	uint8_t evt_type;

	uint8_t adv_mode;
	void enable_advertising_mode() { adv_mode = BTM_BLE_ADV_ENABLE; }
	void disable_advertising_mode() { adv_mode = BTM_BLE_ADV_DISABLE; }
	bool is_advertising_mode_enabled() const {
	return (adv_mode == BTM_BLE_ADV_ENABLE);
	}

	tBLE_BD_ADDR direct_bda;
	tBTM_BLE_EVT directed_conn;
	bool fast_adv_on;
	alarm_t* fast_adv_timer;

	/* inquiry BD addr database */
	tBTM_BLE_LOCAL_ADV_DATA adv_data;
	tBTM_BLE_ADV_CHNL_MAP adv_chnl_map;

	alarm_t* inquiry_timer;
	bool scan_rsp;
	uint8_t state; /* Current state that the inquiry process is in */
	} tBTM_BLE_INQ_CB;

	/* random address resolving complete callback */
	typedef void(tBTM_BLE_RESOLVE_CBACK)(void* match_rec, void* p);

	typedef void(tBTM_BLE_ADDR_CBACK)(const RawAddress& static_random, void* p);

	/* random address management control block */
	typedef struct {
	tBLE_ADDR_TYPE own_addr_type; /* local device LE address type */
	RawAddress private_addr;
	alarm_t* refresh_raddr_timer;
	} tBTM_LE_RANDOM_CB;

	/* acceptlist using state as a bit mask */
	constexpr uint8_t BTM_BLE_WL_IDLE = 0;
	constexpr uint8_t BTM_BLE_ACCEPTLIST_INIT = 1;

	/* resolving list using state as a bit mask */
	enum : uint8_t {
	BTM_BLE_RL_IDLE = 0,
	BTM_BLE_RL_INIT = (1 << 0),
	BTM_BLE_RL_SCAN = (1 << 1),
	BTM_BLE_RL_ADV = (1 << 2),
	};
	typedef uint8_t tBTM_BLE_RL_STATE;

	typedef struct { void* p_param; } tBTM_BLE_CONN_REQ;

	/* LE state request */
	#define BTM_BLE_STATE_INVALID 0
	#define BTM_BLE_STATE_INIT 2
	#define BTM_BLE_STATE_MAX 11

	#define BTM_BLE_STATE_CONN_ADV_BIT 0x0001
	#define BTM_BLE_STATE_INIT_BIT 0x0002
	#define BTM_BLE_STATE_CENTRAL_BIT 0x0004
	#define BTM_BLE_STATE_PERIPHERAL_BIT 0x0008
	#define BTM_BLE_STATE_LO_DUTY_DIR_ADV_BIT 0x0010
	#define BTM_BLE_STATE_HI_DUTY_DIR_ADV_BIT 0x0020
	#define BTM_BLE_STATE_NON_CONN_ADV_BIT 0x0040
	#define BTM_BLE_STATE_PASSIVE_SCAN_BIT 0x0080
	#define BTM_BLE_STATE_ACTIVE_SCAN_BIT 0x0100
	#define BTM_BLE_STATE_SCAN_ADV_BIT 0x0200
	typedef uint16_t tBTM_BLE_STATE_MASK;

	#define BTM_BLE_STATE_ALL_MASK 0x03ff
	#define BTM_BLE_STATE_ALL_ADV_MASK \
	(BTM_BLE_STATE_CONN_ADV_BIT \| BTM_BLE_STATE_LO_DUTY_DIR_ADV_BIT \| \
	BTM_BLE_STATE_HI_DUTY_DIR_ADV_BIT \| BTM_BLE_STATE_SCAN_ADV_BIT)
	#define BTM_BLE_STATE_ALL_CONN_MASK \
	(BTM_BLE_STATE_CENTRAL_BIT \| BTM_BLE_STATE_PERIPHERAL_BIT)

	typedef struct {
	RawAddress* resolve_q_random_pseudo;
	uint8_t* resolve_q_action;
	uint8_t q_next;
	uint8_t q_pending;
	} tBTM_BLE_RESOLVE_Q;

	/* BLE privacy mode */
	#define BTM_PRIVACY_NONE 0 /* BLE no privacy */
	#define BTM_PRIVACY_1_1 1 /* BLE privacy 1.1, do not support privacy 1.0 */
	#define BTM_PRIVACY_1_2 2 /* BLE privacy 1.2 */
	#define BTM_PRIVACY_MIXED \
	3 /* BLE privacy mixed mode, broadcom propietary mode */
	typedef uint8_t tBTM_PRIVACY_MODE;

	/* Define BLE Device Management control structure
	*/
	constexpr uint8_t kBTM_BLE_INQUIRY_ACTIVE = 0x10;
	constexpr uint8_t kBTM_BLE_OBSERVE_ACTIVE = 0x80;
	constexpr size_t kCentralAndPeripheralCount = 2;

	typedef struct {
	private:
	uint8_t scan_activity_; /* LE scan activity mask */

	public:
	bool is_ble_inquiry_active() const {
	return (scan_activity_ & kBTM_BLE_INQUIRY_ACTIVE);
	}
	bool is_ble_observe_active() const {
	return (scan_activity_ & kBTM_BLE_OBSERVE_ACTIVE);
	}

	void set_ble_inquiry_active() { scan_activity_ \|= kBTM_BLE_INQUIRY_ACTIVE; }
	void set_ble_observe_active() { scan_activity_ \|= kBTM_BLE_OBSERVE_ACTIVE; }

	void reset_ble_inquiry() { scan_activity_ &= ~kBTM_BLE_INQUIRY_ACTIVE; }
	void reset_ble_observe() { scan_activity_ &= ~kBTM_BLE_OBSERVE_ACTIVE; }

	bool is_ble_scan_active() const {
	return (is_ble_inquiry_active() \|\| is_ble_observe_active());
	}

	/*****************************************************
	** BLE Inquiry
	*****************************************************/
	tBTM_BLE_INQ_CB inq_var;

	/* observer callback and timer */
	tBTM_INQ_RESULTS_CB* p_obs_results_cb;
	tBTM_CMPL_CB* p_obs_cmpl_cb;
	alarm_t* observer_timer;

	/* background connection procedure cb value */
	uint16_t scan_int;
	uint16_t scan_win;

	/* acceptlist information */
	uint8_t wl_state;
	void set_acceptlist_process_in_progress() {
	wl_state \|= BTM_BLE_ACCEPTLIST_INIT;
	}
	void reset_acceptlist_process_in_progress() {
	wl_state &= ~BTM_BLE_ACCEPTLIST_INIT;
	}
	bool is_acceptlist_in_progress() const {
	return wl_state & BTM_BLE_ACCEPTLIST_INIT;
	}

	private:
	enum : uint8_t { /* BLE connection state */
	BLE_CONN_IDLE = 0,
	BLE_CONNECTING = 2,
	BLE_CONN_CANCEL = 3,
	} conn_state_{BLE_CONN_IDLE};

	public:
	bool is_connection_state_idle() const { return conn_state_ == BLE_CONN_IDLE; }
	bool is_connection_state_connecting() const {
	return conn_state_ == BLE_CONNECTING;
	}
	bool is_connection_state_cancelled() const {
	return conn_state_ == BLE_CONN_CANCEL;
	}
	void set_connection_state_idle() { conn_state_ = BLE_CONN_IDLE; }
	void set_connection_state_connecting() { conn_state_ = BLE_CONNECTING; }
	void set_connection_state_cancelled() { conn_state_ = BLE_CONN_CANCEL; }

	/* random address management control block */
	tBTM_LE_RANDOM_CB addr_mgnt_cb;

	tBTM_PRIVACY_MODE privacy_mode; /* privacy mode */
	uint8_t resolving_list_avail_size; /* resolving list available size */
	tBTM_BLE_RESOLVE_Q resolving_list_pend_q; /* Resolving list queue */
	tBTM_BLE_RL_STATE suspended_rl_state; /* Suspended resolving list state */
	uint8_t* irk_list_mask; /* IRK list availability mask, up to max entry bits */
	tBTM_BLE_RL_STATE rl_state; /* Resolving list state */

	/* current BLE link state */
	tBTM_BLE_STATE_MASK cur_states; /* bit mask of tBTM_BLE_STATE */

	uint8_t link_count[kCentralAndPeripheralCount]; /* total link count central
	and peripheral*/
	} tBTM_BLE_CB;

	#endif // BTM_BLE_INT_TYPES_H