/* hci.h - Bluetooth Host Control Interface definitions */

/*
 * Copyright (c) 2015-2016 Intel Corporation
 *
 * SPDX-License-Identifier: Apache-2.0
 */
#ifndef ZEPHYR_INCLUDE_BLUETOOTH_HCI_H_
#define ZEPHYR_INCLUDE_BLUETOOTH_HCI_H_

#include <zephyr/toolchain.h>
#include <zephyr/types.h>
#include <stdbool.h>
#include <string.h>
#include <zephyr/sys/util.h>
#include <zephyr/net/buf.h>
#include <zephyr/bluetooth/addr.h>
#include <zephyr/bluetooth/hci_err.h>
#include <zephyr/bluetooth/conn.h>

#ifdef __cplusplus
extern "C" {
#endif

/* Special own address types for LL privacy (used in adv & scan parameters) */
#define BT_HCI_OWN_ADDR_RPA_OR_PUBLIC  0x02
#define BT_HCI_OWN_ADDR_RPA_OR_RANDOM  0x03
#define BT_HCI_OWN_ADDR_RPA_MASK       0x02

#define BT_HCI_PEER_ADDR_RPA_UNRESOLVED 0xfe
#define BT_HCI_PEER_ADDR_ANONYMOUS      0xff

#define BT_ENC_KEY_SIZE_MIN                     0x07
#define BT_ENC_KEY_SIZE_MAX                     0x10

struct bt_hci_evt_hdr {
	uint8_t  evt;
	uint8_t  len;
} __packed;
#define BT_HCI_EVT_HDR_SIZE             2

#define BT_ACL_START_NO_FLUSH           0x00
#define BT_ACL_CONT                     0x01
#define BT_ACL_START                    0x02
#define BT_ACL_COMPLETE                 0x03

#define BT_ACL_POINT_TO_POINT           0x00
#define BT_ACL_BROADCAST                0x01

#define BT_ACL_HANDLE_MASK              BIT_MASK(12)

#define bt_acl_handle(h)                ((h) & BT_ACL_HANDLE_MASK)
#define bt_acl_flags(h)                 ((h) >> 12)
#define bt_acl_flags_pb(f)              ((f) & BIT_MASK(2))
#define bt_acl_flags_bc(f)              ((f) >> 2)
#define bt_acl_handle_pack(h, f)        ((h) | ((f) << 12))

struct bt_hci_acl_hdr {
	uint16_t handle;
	uint16_t len;
} __packed;
#define BT_HCI_ACL_HDR_SIZE             4

#define BT_ISO_START                    0x00
#define BT_ISO_CONT                     0x01
#define BT_ISO_SINGLE                   0x02
#define BT_ISO_END                      0x03

#define bt_iso_handle(h)                ((h) & 0x0fff)
#define bt_iso_flags(h)                 ((h) >> 12)
#define bt_iso_flags_pb(f)              ((f) & 0x0003)
#define bt_iso_flags_ts(f)              (((f) >> 2) & 0x0001)
#define bt_iso_pack_flags(pb, ts) \
	(((pb) & 0x0003) | (((ts) & 0x0001) << 2))
#define bt_iso_handle_pack(h, pb, ts) \
	((h) | (bt_iso_pack_flags(pb, ts) << 12))
#define bt_iso_hdr_len(h)                ((h) & BIT_MASK(14))

#define BT_ISO_DATA_VALID                0x00
#define BT_ISO_DATA_INVALID              0x01
#define BT_ISO_DATA_NOP                  0x02

#define bt_iso_pkt_len(h)                ((h) & 0x3fff)
#define bt_iso_pkt_flags(h)              ((h) >> 14)
#define bt_iso_pkt_len_pack(h, f)        ((h) | ((f) << 14))

struct bt_hci_iso_data_hdr {
	uint16_t sn;
	uint16_t slen;
} __packed;
#define BT_HCI_ISO_DATA_HDR_SIZE	4

struct bt_hci_iso_ts_data_hdr {
	uint32_t ts;
	struct bt_hci_iso_data_hdr data;
} __packed;
#define BT_HCI_ISO_TS_DATA_HDR_SIZE     8

struct bt_hci_iso_hdr {
	uint16_t handle; /* 12 bit handle, 2 bit PB flags, 1 bit TS_Flag, 1 bit RFU */
	uint16_t len; /* 14 bits, 2 bits RFU */
} __packed;
#define BT_HCI_ISO_HDR_SIZE             4

struct bt_hci_cmd_hdr {
	uint16_t opcode;
	uint8_t  param_len;
} __packed;
#define BT_HCI_CMD_HDR_SIZE             3

/* Supported Commands */
#define BT_CMD_TEST(cmd, octet, bit)            (cmd[octet] & BIT(bit))
#define BT_CMD_LE_STATES(cmd)                   BT_CMD_TEST(cmd, 28, 3)

#define BT_FEAT_TEST(feat, page, octet, bit)    (feat[page][octet] & BIT(bit))

#define BT_FEAT_BREDR(feat)                     !BT_FEAT_TEST(feat, 0, 4, 5)
#define BT_FEAT_LE(feat)                        BT_FEAT_TEST(feat, 0, 4, 6)
#define BT_FEAT_EXT_FEATURES(feat)              BT_FEAT_TEST(feat, 0, 7, 7)
#define BT_FEAT_HOST_SSP(feat)                  BT_FEAT_TEST(feat, 1, 0, 0)
#define BT_FEAT_SC(feat)                        BT_FEAT_TEST(feat, 2, 1, 0)

#define BT_FEAT_LMP_ESCO_CAPABLE(feat)          BT_FEAT_TEST(feat, 0, 3, 7)
#define BT_FEAT_HV2_PKT(feat)                   BT_FEAT_TEST(feat, 0, 1, 4)
#define BT_FEAT_HV3_PKT(feat)                   BT_FEAT_TEST(feat, 0, 1, 5)
#define BT_FEAT_EV4_PKT(feat)                   BT_FEAT_TEST(feat, 0, 4, 0)
#define BT_FEAT_EV5_PKT(feat)                   BT_FEAT_TEST(feat, 0, 4, 1)
#define BT_FEAT_2EV3_PKT(feat)                  BT_FEAT_TEST(feat, 0, 5, 5)
#define BT_FEAT_3EV3_PKT(feat)                  BT_FEAT_TEST(feat, 0, 5, 6)
#define BT_FEAT_3SLOT_PKT(feat)                 BT_FEAT_TEST(feat, 0, 5, 7)

/* LE features */
#define BT_LE_FEAT_BIT_ENC                      0
#define BT_LE_FEAT_BIT_CONN_PARAM_REQ           1
#define BT_LE_FEAT_BIT_EXT_REJ_IND              2
#define BT_LE_FEAT_BIT_PER_INIT_FEAT_XCHG       3
#define BT_LE_FEAT_BIT_PING                     4
#define BT_LE_FEAT_BIT_DLE                      5
#define BT_LE_FEAT_BIT_PRIVACY                  6
#define BT_LE_FEAT_BIT_EXT_SCAN                 7
#define BT_LE_FEAT_BIT_PHY_2M                   8
#define BT_LE_FEAT_BIT_SMI_TX                   9
#define BT_LE_FEAT_BIT_SMI_RX                   10
#define BT_LE_FEAT_BIT_PHY_CODED                11
#define BT_LE_FEAT_BIT_EXT_ADV                  12
#define BT_LE_FEAT_BIT_PER_ADV                  13
#define BT_LE_FEAT_BIT_CHAN_SEL_ALGO_2          14
#define BT_LE_FEAT_BIT_PWR_CLASS_1              15
#define BT_LE_FEAT_BIT_MIN_USED_CHAN_PROC       16
#define BT_LE_FEAT_BIT_CONN_CTE_REQ             17
#define BT_LE_FEAT_BIT_CONN_CTE_RESP            18
#define BT_LE_FEAT_BIT_CONNECTIONLESS_CTE_TX    19
#define BT_LE_FEAT_BIT_CONNECTIONLESS_CTE_RX    20
#define BT_LE_FEAT_BIT_ANT_SWITCH_TX_AOD        21
#define BT_LE_FEAT_BIT_ANT_SWITCH_RX_AOA        22
#define BT_LE_FEAT_BIT_RX_CTE                   23
#define BT_LE_FEAT_BIT_PAST_SEND                24
#define BT_LE_FEAT_BIT_PAST_RECV                25
#define BT_LE_FEAT_BIT_SCA_UPDATE               26
#define BT_LE_FEAT_BIT_REMOTE_PUB_KEY_VALIDATE  27
#define BT_LE_FEAT_BIT_CIS_CENTRAL              28
#define BT_LE_FEAT_BIT_CIS_PERIPHERAL           29
#define BT_LE_FEAT_BIT_ISO_BROADCASTER          30
#define BT_LE_FEAT_BIT_SYNC_RECEIVER            31
#define BT_LE_FEAT_BIT_ISO_CHANNELS             32
#define BT_LE_FEAT_BIT_PWR_CTRL_REQ             33
#define BT_LE_FEAT_BIT_PWR_CHG_IND              34
#define BT_LE_FEAT_BIT_PATH_LOSS_MONITOR        35
#define BT_LE_FEAT_BIT_PER_ADV_ADI_SUPP         36
#define BT_LE_FEAT_BIT_CONN_SUBRATING           37
#define BT_LE_FEAT_BIT_CONN_SUBRATING_HOST_SUPP 38
#define BT_LE_FEAT_BIT_CHANNEL_CLASSIFICATION   39

#define BT_LE_FEAT_TEST(feat, n)                (feat[(n) >> 3] & \
						 BIT((n) & 7))

#define BT_FEAT_LE_ENCR(feat)                     BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_ENC)
#define BT_FEAT_LE_CONN_PARAM_REQ_PROC(feat)      BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_CONN_PARAM_REQ)
#define BT_FEAT_LE_PER_INIT_FEAT_XCHG(feat)       BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_PER_INIT_FEAT_XCHG)
#define BT_FEAT_LE_DLE(feat)                      BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_DLE)
#define BT_FEAT_LE_PHY_2M(feat)                   BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_PHY_2M)
#define BT_FEAT_LE_PHY_CODED(feat)                BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_PHY_CODED)
#define BT_FEAT_LE_PRIVACY(feat)                  BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_PRIVACY)
#define BT_FEAT_LE_EXT_ADV(feat)                  BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_EXT_ADV)
#define BT_FEAT_LE_EXT_PER_ADV(feat)              BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_PER_ADV)
#define BT_FEAT_LE_CONNECTION_CTE_REQ(feat)       BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_CONN_CTE_REQ)
#define BT_FEAT_LE_CONNECTION_CTE_RESP(feat)      BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_CONN_CTE_RESP)
#define BT_FEAT_LE_CONNECTIONLESS_CTE_TX(feat)    BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_CONNECTIONLESS_CTE_TX)
#define BT_FEAT_LE_CONNECTIONLESS_CTE_RX(feat)    BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_CONNECTIONLESS_CTE_RX)
#define BT_FEAT_LE_ANT_SWITCH_TX_AOD(feat)        BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_ANT_SWITCH_TX_AOD)
#define BT_FEAT_LE_ANT_SWITCH_RX_AOA(feat)        BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_ANT_SWITCH_RX_AOA)
#define BT_FEAT_LE_RX_CTE(feat)                   BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_RX_CTE)
#define BT_FEAT_LE_PAST_SEND(feat)                BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_PAST_SEND)
#define BT_FEAT_LE_PAST_RECV(feat)                BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_PAST_RECV)
#define BT_FEAT_LE_CIS_CENTRAL(feat)              BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_CIS_CENTRAL)
#define BT_FEAT_LE_CIS_PERIPHERAL(feat)           BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_CIS_PERIPHERAL)
#define BT_FEAT_LE_ISO_BROADCASTER(feat)          BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_ISO_BROADCASTER)
#define BT_FEAT_LE_SYNC_RECEIVER(feat)            BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_SYNC_RECEIVER)
#define BT_FEAT_LE_ISO_CHANNELS(feat)             BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_ISO_CHANNELS)
#define BT_FEAT_LE_PWR_CTRL_REQ(feat)             BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_PWR_CTRL_REQ)
#define BT_FEAT_LE_PWR_CHG_IND(feat)              BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_PWR_CHG_IND)
#define BT_FEAT_LE_PATH_LOSS_MONITOR(feat)        BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_PATH_LOSS_MONITOR)
#define BT_FEAT_LE_PER_ADV_ADI_SUPP(feat)         BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_PER_ADV_ADI_SUPP)
#define BT_FEAT_LE_CONN_SUBRATING(feat)           BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_CONN_SUBRATING)
#define BT_FEAT_LE_CONN_SUBRATING_HOST_SUPP(feat) BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_CONN_SUBRATING_HOST_SUPP)
#define BT_FEAT_LE_CHANNEL_CLASSIFICATION(feat)   BT_LE_FEAT_TEST(feat, \
						  BT_LE_FEAT_BIT_CHANNEL_CLASSIFICATION)

#define BT_FEAT_LE_CIS(feat)            (BT_FEAT_LE_CIS_CENTRAL(feat) | \
					BT_FEAT_LE_CIS_PERIPHERAL(feat))
#define BT_FEAT_LE_BIS(feat)            (BT_FEAT_LE_ISO_BROADCASTER(feat) | \
					BT_FEAT_LE_SYNC_RECEIVER(feat))
#define BT_FEAT_LE_ISO(feat)            (BT_FEAT_LE_CIS(feat) | \
					BT_FEAT_LE_BIS(feat))

/* LE States */
#define BT_LE_STATES_PER_CONN_ADV(states)     (states & 0x0000004000000000)

/* Bonding/authentication types */
#define BT_HCI_NO_BONDING                       0x00
#define BT_HCI_NO_BONDING_MITM                  0x01
#define BT_HCI_DEDICATED_BONDING                0x02
#define BT_HCI_DEDICATED_BONDING_MITM           0x03
#define BT_HCI_GENERAL_BONDING                  0x04
#define BT_HCI_GENERAL_BONDING_MITM             0x05

/*
 * MITM protection is enabled in SSP authentication requirements octet when
 * LSB bit is set.
 */
#define BT_MITM                                 0x01

/* I/O capabilities */
#define BT_IO_DISPLAY_ONLY                      0x00
#define BT_IO_DISPLAY_YESNO                     0x01
#define BT_IO_KEYBOARD_ONLY                     0x02
#define BT_IO_NO_INPUT_OUTPUT                   0x03

/* SCO packet types */
#define HCI_PKT_TYPE_HV1                        0x0020
#define HCI_PKT_TYPE_HV2                        0x0040
#define HCI_PKT_TYPE_HV3                        0x0080

/* eSCO packet types */
#define HCI_PKT_TYPE_ESCO_HV1                   0x0001
#define HCI_PKT_TYPE_ESCO_HV2                   0x0002
#define HCI_PKT_TYPE_ESCO_HV3                   0x0004
#define HCI_PKT_TYPE_ESCO_EV3                   0x0008
#define HCI_PKT_TYPE_ESCO_EV4                   0x0010
#define HCI_PKT_TYPE_ESCO_EV5                   0x0020
#define HCI_PKT_TYPE_ESCO_2EV3                  0x0040
#define HCI_PKT_TYPE_ESCO_3EV3                  0x0080
#define HCI_PKT_TYPE_ESCO_2EV5                  0x0100
#define HCI_PKT_TYPE_ESCO_3EV5                  0x0200


#define ESCO_PKT_MASK                           (HCI_PKT_TYPE_ESCO_HV1 | \
						 HCI_PKT_TYPE_ESCO_HV2 | \
						 HCI_PKT_TYPE_ESCO_HV3)
#define SCO_PKT_MASK                            (HCI_PKT_TYPE_HV1 | \
						 HCI_PKT_TYPE_HV2 | \
						 HCI_PKT_TYPE_HV3)
#define EDR_ESCO_PKT_MASK                       (HCI_PKT_TYPE_ESCO_2EV3 | \
						 HCI_PKT_TYPE_ESCO_3EV3 | \
						 HCI_PKT_TYPE_ESCO_2EV5 | \
						 HCI_PKT_TYPE_ESCO_3EV5)

/* HCI BR/EDR link types */
#define BT_HCI_SCO                              0x00
#define BT_HCI_ACL                              0x01
#define BT_HCI_ESCO                             0x02

/* OpCode Group Fields */
#define BT_OGF_LINK_CTRL                        0x01
#define BT_OGF_BASEBAND                         0x03
#define BT_OGF_INFO                             0x04
#define BT_OGF_STATUS                           0x05
#define BT_OGF_LE                               0x08
#define BT_OGF_VS                               0x3f

/* Construct OpCode from OGF and OCF */
#define BT_OP(ogf, ocf)                         ((ocf) | ((ogf) << 10))

/* Invalid opcode */
#define BT_OP_NOP				0x0000

/* Obtain OGF from OpCode */
#define BT_OGF(opcode)                          (((opcode) >> 10) & BIT_MASK(6))
/* Obtain OCF from OpCode */
#define BT_OCF(opcode)                          ((opcode) & BIT_MASK(10))

#define BT_HCI_OP_INQUIRY                       BT_OP(BT_OGF_LINK_CTRL, 0x0001)
struct bt_hci_op_inquiry {
	uint8_t lap[3];
	uint8_t length;
	uint8_t num_rsp;
} __packed;

#define BT_HCI_OP_INQUIRY_CANCEL                BT_OP(BT_OGF_LINK_CTRL, 0x0002)

#define BT_HCI_OP_CONNECT                       BT_OP(BT_OGF_LINK_CTRL, 0x0005)
struct bt_hci_cp_connect {
	bt_addr_t bdaddr;
	uint16_t  packet_type;
	uint8_t   pscan_rep_mode;
	uint8_t   reserved;
	uint16_t  clock_offset;
	uint8_t   allow_role_switch;
} __packed;

#define BT_HCI_OP_DISCONNECT                    BT_OP(BT_OGF_LINK_CTRL, 0x0006)
struct bt_hci_cp_disconnect {
	uint16_t handle;
	uint8_t  reason;
} __packed;

#define BT_HCI_OP_CONNECT_CANCEL                BT_OP(BT_OGF_LINK_CTRL, 0x0008)
struct bt_hci_cp_connect_cancel {
	bt_addr_t bdaddr;
} __packed;
struct bt_hci_rp_connect_cancel {
	uint8_t   status;
	bt_addr_t bdaddr;
} __packed;

#define BT_HCI_OP_ACCEPT_CONN_REQ               BT_OP(BT_OGF_LINK_CTRL, 0x0009)
struct bt_hci_cp_accept_conn_req {
	bt_addr_t bdaddr;
	uint8_t   role;
} __packed;

#define BT_HCI_OP_SETUP_SYNC_CONN               BT_OP(BT_OGF_LINK_CTRL, 0x0028)
struct bt_hci_cp_setup_sync_conn {
	uint16_t  handle;
	uint32_t  tx_bandwidth;
	uint32_t  rx_bandwidth;
	uint16_t  max_latency;
	uint16_t  content_format;
	uint8_t   retrans_effort;
	uint16_t  pkt_type;
} __packed;

#define BT_HCI_OP_ACCEPT_SYNC_CONN_REQ          BT_OP(BT_OGF_LINK_CTRL, 0x0029)
struct bt_hci_cp_accept_sync_conn_req {
	bt_addr_t bdaddr;
	uint32_t  tx_bandwidth;
	uint32_t  rx_bandwidth;
	uint16_t  max_latency;
	uint16_t  content_format;
	uint8_t   retrans_effort;
	uint16_t  pkt_type;
} __packed;

#define BT_HCI_OP_REJECT_CONN_REQ               BT_OP(BT_OGF_LINK_CTRL, 0x000a)
struct bt_hci_cp_reject_conn_req {
	bt_addr_t bdaddr;
	uint8_t   reason;
} __packed;

#define BT_HCI_OP_LINK_KEY_REPLY                BT_OP(BT_OGF_LINK_CTRL, 0x000b)
struct bt_hci_cp_link_key_reply {
	bt_addr_t bdaddr;
	uint8_t   link_key[16];
} __packed;

#define BT_HCI_OP_LINK_KEY_NEG_REPLY            BT_OP(BT_OGF_LINK_CTRL, 0x000c)
struct bt_hci_cp_link_key_neg_reply {
	bt_addr_t bdaddr;
} __packed;

#define BT_HCI_OP_PIN_CODE_REPLY                BT_OP(BT_OGF_LINK_CTRL, 0x000d)
struct bt_hci_cp_pin_code_reply {
	bt_addr_t bdaddr;
	uint8_t   pin_len;
	uint8_t   pin_code[16];
} __packed;
struct bt_hci_rp_pin_code_reply {
	uint8_t      status;
	bt_addr_t bdaddr;
} __packed;

#define BT_HCI_OP_PIN_CODE_NEG_REPLY            BT_OP(BT_OGF_LINK_CTRL, 0x000e)
struct bt_hci_cp_pin_code_neg_reply {
	bt_addr_t bdaddr;
} __packed;
struct bt_hci_rp_pin_code_neg_reply {
	uint8_t   status;
	bt_addr_t bdaddr;
} __packed;

#define BT_HCI_OP_AUTH_REQUESTED                BT_OP(BT_OGF_LINK_CTRL, 0x0011)
struct bt_hci_cp_auth_requested {
	uint16_t handle;
} __packed;

#define BT_HCI_OP_SET_CONN_ENCRYPT              BT_OP(BT_OGF_LINK_CTRL, 0x0013)
struct bt_hci_cp_set_conn_encrypt {
	uint16_t handle;
	uint8_t  encrypt;
} __packed;

#define BT_HCI_OP_REMOTE_NAME_REQUEST           BT_OP(BT_OGF_LINK_CTRL, 0x0019)
struct bt_hci_cp_remote_name_request {
	bt_addr_t bdaddr;
	uint8_t   pscan_rep_mode;
	uint8_t   reserved;
	uint16_t  clock_offset;
} __packed;

#define BT_HCI_OP_REMOTE_NAME_CANCEL            BT_OP(BT_OGF_LINK_CTRL, 0x001a)
struct bt_hci_cp_remote_name_cancel {
	bt_addr_t bdaddr;
} __packed;
struct bt_hci_rp_remote_name_cancel {
	uint8_t   status;
	bt_addr_t bdaddr;
} __packed;

#define BT_HCI_OP_READ_REMOTE_FEATURES          BT_OP(BT_OGF_LINK_CTRL, 0x001b)
struct bt_hci_cp_read_remote_features {
	uint16_t handle;
} __packed;

#define BT_HCI_OP_READ_REMOTE_EXT_FEATURES      BT_OP(BT_OGF_LINK_CTRL, 0x001c)
struct bt_hci_cp_read_remote_ext_features {
	uint16_t handle;
	uint8_t  page;
} __packed;

#define BT_HCI_OP_READ_REMOTE_VERSION_INFO      BT_OP(BT_OGF_LINK_CTRL, 0x001d)
struct bt_hci_cp_read_remote_version_info {
	uint16_t handle;
} __packed;

#define BT_HCI_OP_IO_CAPABILITY_REPLY           BT_OP(BT_OGF_LINK_CTRL, 0x002b)
struct bt_hci_cp_io_capability_reply {
	bt_addr_t bdaddr;
	uint8_t   capability;
	uint8_t   oob_data;
	uint8_t   authentication;
} __packed;

#define BT_HCI_OP_USER_CONFIRM_REPLY            BT_OP(BT_OGF_LINK_CTRL, 0x002c)
#define BT_HCI_OP_USER_CONFIRM_NEG_REPLY        BT_OP(BT_OGF_LINK_CTRL, 0x002d)
struct bt_hci_cp_user_confirm_reply {
	bt_addr_t bdaddr;
} __packed;
struct bt_hci_rp_user_confirm_reply {
	uint8_t   status;
	bt_addr_t bdaddr;
} __packed;

#define BT_HCI_OP_USER_PASSKEY_REPLY            BT_OP(BT_OGF_LINK_CTRL, 0x002e)
struct bt_hci_cp_user_passkey_reply {
	bt_addr_t bdaddr;
	uint32_t  passkey;
} __packed;

#define BT_HCI_OP_USER_PASSKEY_NEG_REPLY        BT_OP(BT_OGF_LINK_CTRL, 0x002f)
struct bt_hci_cp_user_passkey_neg_reply {
	bt_addr_t bdaddr;
} __packed;

#define BT_HCI_OP_IO_CAPABILITY_NEG_REPLY       BT_OP(BT_OGF_LINK_CTRL, 0x0034)
struct bt_hci_cp_io_capability_neg_reply {
	bt_addr_t bdaddr;
	uint8_t   reason;
} __packed;

#define BT_HCI_OP_SET_EVENT_MASK                BT_OP(BT_OGF_BASEBAND, 0x0001)
struct bt_hci_cp_set_event_mask {
	uint8_t  events[8];
} __packed;

#define BT_HCI_OP_RESET                         BT_OP(BT_OGF_BASEBAND, 0x0003)

#define BT_HCI_OP_WRITE_LOCAL_NAME              BT_OP(BT_OGF_BASEBAND, 0x0013)
struct bt_hci_write_local_name {
	uint8_t local_name[248];
} __packed;

#define BT_HCI_OP_WRITE_PAGE_TIMEOUT            BT_OP(BT_OGF_BASEBAND, 0x0018)

#define BT_HCI_OP_WRITE_SCAN_ENABLE             BT_OP(BT_OGF_BASEBAND, 0x001a)
#define BT_BREDR_SCAN_DISABLED                  0x00
#define BT_BREDR_SCAN_INQUIRY                   0x01
#define BT_BREDR_SCAN_PAGE                      0x02

#define BT_HCI_OP_WRITE_CLASS_OF_DEVICE         BT_OP(BT_OGF_BASEBAND, 0x0024)
struct bt_hci_cp_write_class_of_device {
	uint8_t  class_of_device[3];
} __packed;

#define BT_TX_POWER_LEVEL_CURRENT               0x00
#define BT_TX_POWER_LEVEL_MAX                   0x01
#define BT_HCI_OP_READ_TX_POWER_LEVEL           BT_OP(BT_OGF_BASEBAND, 0x002d)
struct bt_hci_cp_read_tx_power_level {
	uint16_t handle;
	uint8_t  type;
} __packed;

struct bt_hci_rp_read_tx_power_level {
	uint8_t  status;
	uint16_t handle;
	int8_t   tx_power_level;
} __packed;

#define BT_HCI_CTL_TO_HOST_FLOW_DISABLE         0x00
#define BT_HCI_CTL_TO_HOST_FLOW_ENABLE          0x01
#define BT_HCI_OP_SET_CTL_TO_HOST_FLOW          BT_OP(BT_OGF_BASEBAND, 0x0031)
struct bt_hci_cp_set_ctl_to_host_flow {
	uint8_t  flow_enable;
} __packed;

#define BT_HCI_OP_HOST_BUFFER_SIZE              BT_OP(BT_OGF_BASEBAND, 0x0033)
struct bt_hci_cp_host_buffer_size {
	uint16_t acl_mtu;
	uint8_t  sco_mtu;
	uint16_t acl_pkts;
	uint16_t sco_pkts;
} __packed;

struct bt_hci_handle_count {
	uint16_t handle;
	uint16_t count;
} __packed;

#define BT_HCI_OP_HOST_NUM_COMPLETED_PACKETS    BT_OP(BT_OGF_BASEBAND, 0x0035)
struct bt_hci_cp_host_num_completed_packets {
	uint8_t  num_handles;
	struct bt_hci_handle_count h[0];
} __packed;

#define BT_HCI_OP_WRITE_INQUIRY_MODE            BT_OP(BT_OGF_BASEBAND, 0x0045)
struct bt_hci_cp_write_inquiry_mode {
	uint8_t  mode;
} __packed;

#define BT_HCI_OP_WRITE_SSP_MODE                BT_OP(BT_OGF_BASEBAND, 0x0056)
struct bt_hci_cp_write_ssp_mode {
	uint8_t mode;
} __packed;

#define BT_HCI_OP_SET_EVENT_MASK_PAGE_2         BT_OP(BT_OGF_BASEBAND, 0x0063)
struct bt_hci_cp_set_event_mask_page_2 {
	uint8_t  events_page_2[8];
} __packed;

#define BT_HCI_OP_LE_WRITE_LE_HOST_SUPP         BT_OP(BT_OGF_BASEBAND, 0x006d)
struct bt_hci_cp_write_le_host_supp {
	uint8_t  le;
	uint8_t  simul;
} __packed;

#define BT_HCI_OP_WRITE_SC_HOST_SUPP            BT_OP(BT_OGF_BASEBAND, 0x007a)
struct bt_hci_cp_write_sc_host_supp {
	uint8_t  sc_support;
} __packed;

#define BT_HCI_OP_READ_AUTH_PAYLOAD_TIMEOUT     BT_OP(BT_OGF_BASEBAND, 0x007b)
struct bt_hci_cp_read_auth_payload_timeout {
	uint16_t handle;
} __packed;

struct bt_hci_rp_read_auth_payload_timeout {
	uint8_t  status;
	uint16_t handle;
	uint16_t auth_payload_timeout;
} __packed;

#define BT_HCI_OP_WRITE_AUTH_PAYLOAD_TIMEOUT    BT_OP(BT_OGF_BASEBAND, 0x007c)
struct bt_hci_cp_write_auth_payload_timeout {
	uint16_t handle;
	uint16_t auth_payload_timeout;
} __packed;

struct bt_hci_rp_write_auth_payload_timeout {
	uint8_t  status;
	uint16_t handle;
} __packed;

#define BT_HCI_OP_CONFIGURE_DATA_PATH           BT_OP(BT_OGF_BASEBAND, 0x0083)
struct bt_hci_cp_configure_data_path {
	uint8_t  data_path_dir;
	uint8_t  data_path_id;
	uint8_t  vs_config_len;
	uint8_t  vs_config[0];
} __packed;

struct bt_hci_rp_configure_data_path {
	uint8_t  status;
} __packed;

/* HCI version from Assigned Numbers */
#define BT_HCI_VERSION_1_0B                     0
#define BT_HCI_VERSION_1_1                      1
#define BT_HCI_VERSION_1_2                      2
#define BT_HCI_VERSION_2_0                      3
#define BT_HCI_VERSION_2_1                      4
#define BT_HCI_VERSION_3_0                      5
#define BT_HCI_VERSION_4_0                      6
#define BT_HCI_VERSION_4_1                      7
#define BT_HCI_VERSION_4_2                      8
#define BT_HCI_VERSION_5_0                      9
#define BT_HCI_VERSION_5_1                      10
#define BT_HCI_VERSION_5_2                      11
#define BT_HCI_VERSION_5_3                      12

#define BT_HCI_OP_READ_LOCAL_VERSION_INFO       BT_OP(BT_OGF_INFO, 0x0001)
struct bt_hci_rp_read_local_version_info {
	uint8_t  status;
	uint8_t  hci_version;
	uint16_t hci_revision;
	uint8_t  lmp_version;
	uint16_t manufacturer;
	uint16_t lmp_subversion;
} __packed;

#define BT_HCI_OP_READ_SUPPORTED_COMMANDS       BT_OP(BT_OGF_INFO, 0x0002)
struct bt_hci_rp_read_supported_commands {
	uint8_t  status;
	uint8_t  commands[64];
} __packed;

#define BT_HCI_OP_READ_LOCAL_EXT_FEATURES       BT_OP(BT_OGF_INFO, 0x0004)
struct bt_hci_cp_read_local_ext_features {
	uint8_t page;
};
struct bt_hci_rp_read_local_ext_features {
	uint8_t  status;
	uint8_t  page;
	uint8_t  max_page;
	uint8_t  ext_features[8];
} __packed;

#define BT_HCI_OP_READ_LOCAL_FEATURES           BT_OP(BT_OGF_INFO, 0x0003)
struct bt_hci_rp_read_local_features {
	uint8_t  status;
	uint8_t  features[8];
} __packed;

#define BT_HCI_OP_READ_BUFFER_SIZE              BT_OP(BT_OGF_INFO, 0x0005)
struct bt_hci_rp_read_buffer_size {
	uint8_t  status;
	uint16_t acl_max_len;
	uint8_t  sco_max_len;
	uint16_t acl_max_num;
	uint16_t sco_max_num;
} __packed;

#define BT_HCI_OP_READ_BD_ADDR                  BT_OP(BT_OGF_INFO, 0x0009)
struct bt_hci_rp_read_bd_addr {
	uint8_t   status;
	bt_addr_t bdaddr;
} __packed;

/* logic transport type bits as returned when reading supported codecs */
#define BT_HCI_CODEC_TRANSPORT_MASK_BREDR_ACL BIT(0)
#define BT_HCI_CODEC_TRANSPORT_MASK_BREDR_SCO BIT(1)
#define BT_HCI_CODEC_TRANSPORT_MASK_LE_CIS    BIT(2)
#define BT_HCI_CODEC_TRANSPORT_MASK_LE_BIS    BIT(3)

/* logic transport types for reading codec capabilities and controller delays */
#define BT_HCI_LOGICAL_TRANSPORT_TYPE_BREDR_ACL 0x00
#define BT_HCI_LOGICAL_TRANSPORT_TYPE_BREDR_SCO 0x01
#define BT_HCI_LOGICAL_TRANSPORT_TYPE_LE_CIS    0x02
#define BT_HCI_LOGICAL_TRANSPORT_TYPE_LE_BIS    0x03

/* audio datapath directions */
#define BT_HCI_DATAPATH_DIR_HOST_TO_CTLR 0x00
#define BT_HCI_DATAPATH_DIR_CTLR_TO_HOST 0x01

/* audio datapath IDs */
#define BT_HCI_DATAPATH_ID_HCI      0x00
#define BT_HCI_DATAPATH_ID_VS       0x01
#define BT_HCI_DATAPATH_ID_VS_END   0xfe
#define BT_HCI_DATAPATH_ID_DISABLED 0xff

/* coding format assigned numbers, used for codec IDs */
#define BT_HCI_CODING_FORMAT_ULAW_LOG    0x00
#define BT_HCI_CODING_FORMAT_ALAW_LOG    0x01
#define BT_HCI_CODING_FORMAT_CVSD        0x02
#define BT_HCI_CODING_FORMAT_TRANSPARENT 0x03
#define BT_HCI_CODING_FORMAT_LINEAR_PCM  0x04
#define BT_HCI_CODING_FORMAT_MSBC        0x05
#define BT_HCI_CODING_FORMAT_VS          0xFF


#define BT_HCI_OP_READ_CODECS                   BT_OP(BT_OGF_INFO, 0x000b)
struct bt_hci_std_codec_info {
	uint8_t codec_id;
} __packed;
struct bt_hci_std_codecs {
	uint8_t num_codecs;
	struct bt_hci_std_codec_info codec_info[0];
} __packed;
struct bt_hci_vs_codec_info {
	uint16_t company_id;
	uint16_t codec_id;
} __packed;
struct bt_hci_vs_codecs {
	uint8_t num_codecs;
	struct bt_hci_vs_codec_info codec_info[0];
} __packed;
struct bt_hci_rp_read_codecs {
	uint8_t status;
	/* other fields filled in dynamically */
	uint8_t codecs[0];
} __packed;

#define BT_HCI_OP_READ_CODECS_V2                BT_OP(BT_OGF_INFO, 0x000d)
struct bt_hci_std_codec_info_v2 {
	uint8_t codec_id;
	uint8_t transports; /* bitmap */
} __packed;
struct bt_hci_std_codecs_v2 {
	uint8_t num_codecs;
	struct bt_hci_std_codec_info_v2 codec_info[0];
} __packed;
struct bt_hci_vs_codec_info_v2 {
	uint16_t company_id;
	uint16_t codec_id;
	uint8_t transports; /* bitmap */
} __packed;
struct bt_hci_vs_codecs_v2 {
	uint8_t num_codecs;
	struct bt_hci_vs_codec_info_v2 codec_info[0];
} __packed;
struct bt_hci_rp_read_codecs_v2 {
	uint8_t status;
	/* other fields filled in dynamically */
	uint8_t codecs[0];
} __packed;

struct bt_hci_cp_codec_id {
	uint8_t coding_format;
	uint16_t company_id;
	uint16_t vs_codec_id;
} __packed;

#define BT_HCI_OP_READ_CODEC_CAPABILITIES       BT_OP(BT_OGF_INFO, 0x000e)
struct bt_hci_cp_read_codec_capabilities {
	struct bt_hci_cp_codec_id codec_id;
	uint8_t transport;
	uint8_t direction;
} __packed;
struct bt_hci_codec_capability_info {
	uint8_t length;
	uint8_t data[0];
} __packed;
struct bt_hci_rp_read_codec_capabilities {
	uint8_t status;
	uint8_t num_capabilities;
	/* other fields filled in dynamically */
	uint8_t capabilities[0];
} __packed;

#define BT_HCI_OP_READ_CTLR_DELAY               BT_OP(BT_OGF_INFO, 0x000f)
struct bt_hci_cp_read_ctlr_delay {
	struct bt_hci_cp_codec_id codec_id;
	uint8_t transport;
	uint8_t direction;
	uint8_t codec_config_len;
	uint8_t codec_config[0];
} __packed;
struct bt_hci_rp_read_ctlr_delay {
	uint8_t status;
	uint8_t min_ctlr_delay[3];
	uint8_t max_ctlr_delay[3];
} __packed;

#define BT_HCI_OP_READ_RSSI                     BT_OP(BT_OGF_STATUS, 0x0005)
struct bt_hci_cp_read_rssi {
	uint16_t handle;
} __packed;
struct bt_hci_rp_read_rssi {
	uint8_t  status;
	uint16_t handle;
	int8_t   rssi;
} __packed;

#define BT_HCI_ENCRYPTION_KEY_SIZE_MIN          7
#define BT_HCI_ENCRYPTION_KEY_SIZE_MAX          16

#define BT_HCI_OP_READ_ENCRYPTION_KEY_SIZE      BT_OP(BT_OGF_STATUS, 0x0008)
struct bt_hci_cp_read_encryption_key_size {
	uint16_t handle;
} __packed;
struct bt_hci_rp_read_encryption_key_size {
	uint8_t  status;
	uint16_t handle;
	uint8_t  key_size;
} __packed;

/* BLE */

#define BT_HCI_OP_LE_SET_EVENT_MASK             BT_OP(BT_OGF_LE, 0x0001)
struct bt_hci_cp_le_set_event_mask {
	uint8_t events[8];
} __packed;

#define BT_HCI_OP_LE_READ_BUFFER_SIZE           BT_OP(BT_OGF_LE, 0x0002)
struct bt_hci_rp_le_read_buffer_size {
	uint8_t  status;
	uint16_t le_max_len;
	uint8_t  le_max_num;
} __packed;

#define BT_HCI_OP_LE_READ_LOCAL_FEATURES        BT_OP(BT_OGF_LE, 0x0003)
struct bt_hci_rp_le_read_local_features {
	uint8_t  status;
	uint8_t  features[8];
} __packed;

#define BT_HCI_OP_LE_SET_RANDOM_ADDRESS         BT_OP(BT_OGF_LE, 0x0005)
struct bt_hci_cp_le_set_random_address {
	bt_addr_t bdaddr;
} __packed;

#define BT_HCI_ADV_IND                          0x00
#define BT_HCI_ADV_DIRECT_IND                   0x01
#define BT_HCI_ADV_SCAN_IND                     0x02
#define BT_HCI_ADV_NONCONN_IND                  0x03
#define BT_HCI_ADV_DIRECT_IND_LOW_DUTY          0x04
#define BT_HCI_ADV_SCAN_RSP                     0x04

#define BT_LE_ADV_INTERVAL_MIN                  0x0020
#define BT_LE_ADV_INTERVAL_MAX                  0x4000
#define BT_LE_ADV_INTERVAL_DEFAULT              0x0800

#define BT_LE_ADV_CHAN_MAP_CHAN_37              0x01
#define BT_LE_ADV_CHAN_MAP_CHAN_38              0x02
#define BT_LE_ADV_CHAN_MAP_CHAN_39              0x04
#define BT_LE_ADV_CHAN_MAP_ALL                  0x07

#define BT_LE_ADV_FP_NO_FILTER                  0x00
#define BT_LE_ADV_FP_FILTER_SCAN_REQ            0x01
#define BT_LE_ADV_FP_FILTER_CONN_IND            0x02
#define BT_LE_ADV_FP_FILTER_BOTH                0x03

#define BT_HCI_OP_LE_SET_ADV_PARAM              BT_OP(BT_OGF_LE, 0x0006)
struct bt_hci_cp_le_set_adv_param {
	uint16_t     min_interval;
	uint16_t     max_interval;
	uint8_t      type;
	uint8_t      own_addr_type;
	bt_addr_le_t direct_addr;
	uint8_t      channel_map;
	uint8_t      filter_policy;
} __packed;

#define BT_HCI_OP_LE_READ_ADV_CHAN_TX_POWER     BT_OP(BT_OGF_LE, 0x0007)
struct bt_hci_rp_le_read_chan_tx_power {
	uint8_t status;
	int8_t  tx_power_level;
} __packed;

#define BT_HCI_OP_LE_SET_ADV_DATA               BT_OP(BT_OGF_LE, 0x0008)
struct bt_hci_cp_le_set_adv_data {
	uint8_t  len;
	uint8_t  data[31];
} __packed;

#define BT_HCI_OP_LE_SET_SCAN_RSP_DATA          BT_OP(BT_OGF_LE, 0x0009)
struct bt_hci_cp_le_set_scan_rsp_data {
	uint8_t  len;
	uint8_t  data[31];
} __packed;

#define BT_HCI_LE_ADV_DISABLE                   0x00
#define BT_HCI_LE_ADV_ENABLE                    0x01

#define BT_HCI_OP_LE_SET_ADV_ENABLE             BT_OP(BT_OGF_LE, 0x000a)
struct bt_hci_cp_le_set_adv_enable {
	uint8_t  enable;
} __packed;

/* Scan types */
#define BT_HCI_OP_LE_SET_SCAN_PARAM             BT_OP(BT_OGF_LE, 0x000b)
#define BT_HCI_LE_SCAN_PASSIVE                  0x00
#define BT_HCI_LE_SCAN_ACTIVE                   0x01

#define BT_HCI_LE_SCAN_FP_BASIC_NO_FILTER       0x00
#define BT_HCI_LE_SCAN_FP_BASIC_FILTER          0x01
#define BT_HCI_LE_SCAN_FP_EXT_NO_FILTER         0x02
#define BT_HCI_LE_SCAN_FP_EXT_FILTER            0x03

struct bt_hci_cp_le_set_scan_param {
	uint8_t  scan_type;
	uint16_t interval;
	uint16_t window;
	uint8_t  addr_type;
	uint8_t  filter_policy;
} __packed;

#define BT_HCI_OP_LE_SET_SCAN_ENABLE            BT_OP(BT_OGF_LE, 0x000c)

#define BT_HCI_LE_SCAN_DISABLE                  0x00
#define BT_HCI_LE_SCAN_ENABLE                   0x01

#define BT_HCI_LE_SCAN_FILTER_DUP_DISABLE       0x00
#define BT_HCI_LE_SCAN_FILTER_DUP_ENABLE        0x01

struct bt_hci_cp_le_set_scan_enable {
	uint8_t  enable;
	uint8_t  filter_dup;
} __packed;

#define BT_HCI_OP_LE_CREATE_CONN                BT_OP(BT_OGF_LE, 0x000d)

#define BT_HCI_LE_CREATE_CONN_FP_NO_FILTER      0x00
#define BT_HCI_LE_CREATE_CONN_FP_FILTER         0x01

struct bt_hci_cp_le_create_conn {
	uint16_t     scan_interval;
	uint16_t     scan_window;
	uint8_t      filter_policy;
	bt_addr_le_t peer_addr;
	uint8_t      own_addr_type;
	uint16_t     conn_interval_min;
	uint16_t     conn_interval_max;
	uint16_t     conn_latency;
	uint16_t     supervision_timeout;
	uint16_t     min_ce_len;
	uint16_t     max_ce_len;
} __packed;

#define BT_HCI_OP_LE_CREATE_CONN_CANCEL         BT_OP(BT_OGF_LE, 0x000e)

#define BT_HCI_OP_LE_READ_FAL_SIZE               BT_OP(BT_OGF_LE, 0x000f)
struct bt_hci_rp_le_read_fal_size {
	uint8_t  status;
	uint8_t  fal_size;
} __packed;

#define BT_HCI_OP_LE_CLEAR_FAL                   BT_OP(BT_OGF_LE, 0x0010)

#define BT_HCI_OP_LE_ADD_DEV_TO_FAL              BT_OP(BT_OGF_LE, 0x0011)
struct bt_hci_cp_le_add_dev_to_fal {
	bt_addr_le_t  addr;
} __packed;

#define BT_HCI_OP_LE_REM_DEV_FROM_FAL            BT_OP(BT_OGF_LE, 0x0012)
struct bt_hci_cp_le_rem_dev_from_fal {
	bt_addr_le_t  addr;
} __packed;

#define BT_HCI_OP_LE_CONN_UPDATE                BT_OP(BT_OGF_LE, 0x0013)
struct hci_cp_le_conn_update {
	uint16_t handle;
	uint16_t conn_interval_min;
	uint16_t conn_interval_max;
	uint16_t conn_latency;
	uint16_t supervision_timeout;
	uint16_t min_ce_len;
	uint16_t max_ce_len;
} __packed;

#define BT_HCI_OP_LE_SET_HOST_CHAN_CLASSIF      BT_OP(BT_OGF_LE, 0x0014)
struct bt_hci_cp_le_set_host_chan_classif {
	uint8_t  ch_map[5];
} __packed;

#define BT_HCI_OP_LE_READ_CHAN_MAP              BT_OP(BT_OGF_LE, 0x0015)
struct bt_hci_cp_le_read_chan_map {
	uint16_t handle;
} __packed;
struct bt_hci_rp_le_read_chan_map {
	uint8_t  status;
	uint16_t handle;
	uint8_t  ch_map[5];
} __packed;

#define BT_HCI_OP_LE_READ_REMOTE_FEATURES       BT_OP(BT_OGF_LE, 0x0016)
struct bt_hci_cp_le_read_remote_features {
	uint16_t  handle;
} __packed;

#define BT_HCI_OP_LE_ENCRYPT                    BT_OP(BT_OGF_LE, 0x0017)
struct bt_hci_cp_le_encrypt {
	uint8_t  key[16];
	uint8_t  plaintext[16];
} __packed;
struct bt_hci_rp_le_encrypt {
	uint8_t  status;
	uint8_t  enc_data[16];
} __packed;

#define BT_HCI_OP_LE_RAND                       BT_OP(BT_OGF_LE, 0x0018)
struct bt_hci_rp_le_rand {
	uint8_t  status;
	uint8_t  rand[8];
} __packed;

#define BT_HCI_OP_LE_START_ENCRYPTION           BT_OP(BT_OGF_LE, 0x0019)
struct bt_hci_cp_le_start_encryption {
	uint16_t handle;
	uint64_t rand;
	uint16_t ediv;
	uint8_t  ltk[16];
} __packed;

#define BT_HCI_OP_LE_LTK_REQ_REPLY              BT_OP(BT_OGF_LE, 0x001a)
struct bt_hci_cp_le_ltk_req_reply {
	uint16_t handle;
	uint8_t  ltk[16];
} __packed;
struct bt_hci_rp_le_ltk_req_reply {
	uint8_t  status;
	uint16_t handle;
} __packed;

#define BT_HCI_OP_LE_LTK_REQ_NEG_REPLY          BT_OP(BT_OGF_LE, 0x001b)
struct bt_hci_cp_le_ltk_req_neg_reply {
	uint16_t handle;
} __packed;
struct bt_hci_rp_le_ltk_req_neg_reply {
	uint8_t  status;
	uint16_t handle;
} __packed;

#define BT_HCI_OP_LE_READ_SUPP_STATES           BT_OP(BT_OGF_LE, 0x001c)
struct bt_hci_rp_le_read_supp_states {
	uint8_t  status;
	uint8_t  le_states[8];
} __packed;

#define BT_HCI_OP_LE_RX_TEST                    BT_OP(BT_OGF_LE, 0x001d)
struct bt_hci_cp_le_rx_test {
	uint8_t  rx_ch;
} __packed;

#define BT_HCI_TEST_PKT_PAYLOAD_PRBS9           0x00
#define BT_HCI_TEST_PKT_PAYLOAD_11110000        0x01
#define BT_HCI_TEST_PKT_PAYLOAD_10101010        0x02
#define BT_HCI_TEST_PKT_PAYLOAD_PRBS15          0x03
#define BT_HCI_TEST_PKT_PAYLOAD_11111111        0x04
#define BT_HCI_TEST_PKT_PAYLOAD_00000000        0x05
#define BT_HCI_TEST_PKT_PAYLOAD_00001111        0x06
#define BT_HCI_TEST_PKT_PAYLOAD_01010101        0x07

#define BT_HCI_OP_LE_TX_TEST                    BT_OP(BT_OGF_LE, 0x001e)
struct bt_hci_cp_le_tx_test {
	uint8_t  tx_ch;
	uint8_t  test_data_len;
	uint8_t  pkt_payload;
} __packed;

#define BT_HCI_OP_LE_TEST_END                   BT_OP(BT_OGF_LE, 0x001f)
struct bt_hci_rp_le_test_end {
	uint8_t  status;
	uint16_t rx_pkt_count;
} __packed;

#define BT_HCI_OP_LE_CONN_PARAM_REQ_REPLY       BT_OP(BT_OGF_LE, 0x0020)
struct bt_hci_cp_le_conn_param_req_reply {
	uint16_t handle;
	uint16_t interval_min;
	uint16_t interval_max;
	uint16_t latency;
	uint16_t timeout;
	uint16_t min_ce_len;
	uint16_t max_ce_len;
} __packed;
struct bt_hci_rp_le_conn_param_req_reply {
	uint8_t  status;
	uint16_t handle;
} __packed;

#define BT_HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY   BT_OP(BT_OGF_LE, 0x0021)
struct bt_hci_cp_le_conn_param_req_neg_reply {
	uint16_t handle;
	uint8_t  reason;
} __packed;
struct bt_hci_rp_le_conn_param_req_neg_reply {
	uint8_t  status;
	uint16_t handle;
} __packed;

#define BT_HCI_OP_LE_SET_DATA_LEN               BT_OP(BT_OGF_LE, 0x0022)
struct bt_hci_cp_le_set_data_len {
	uint16_t handle;
	uint16_t tx_octets;
	uint16_t tx_time;
} __packed;
struct bt_hci_rp_le_set_data_len {
	uint8_t  status;
	uint16_t handle;
} __packed;

#define BT_HCI_OP_LE_READ_DEFAULT_DATA_LEN      BT_OP(BT_OGF_LE, 0x0023)
struct bt_hci_rp_le_read_default_data_len {
	uint8_t  status;
	uint16_t max_tx_octets;
	uint16_t max_tx_time;
} __packed;

#define BT_HCI_OP_LE_WRITE_DEFAULT_DATA_LEN     BT_OP(BT_OGF_LE, 0x0024)
struct bt_hci_cp_le_write_default_data_len {
	uint16_t max_tx_octets;
	uint16_t max_tx_time;
} __packed;

#define BT_HCI_OP_LE_P256_PUBLIC_KEY            BT_OP(BT_OGF_LE, 0x0025)

#define BT_HCI_OP_LE_GENERATE_DHKEY             BT_OP(BT_OGF_LE, 0x0026)
struct bt_hci_cp_le_generate_dhkey {
	uint8_t key[64];
} __packed;


#define BT_HCI_OP_LE_GENERATE_DHKEY_V2          BT_OP(BT_OGF_LE, 0x005e)

#define BT_HCI_LE_KEY_TYPE_GENERATED            0x00
#define BT_HCI_LE_KEY_TYPE_DEBUG                0x01

struct bt_hci_cp_le_generate_dhkey_v2 {
	uint8_t key[64];
	uint8_t key_type;
} __packed;


#define BT_HCI_OP_LE_ADD_DEV_TO_RL              BT_OP(BT_OGF_LE, 0x0027)
struct bt_hci_cp_le_add_dev_to_rl {
	bt_addr_le_t  peer_id_addr;
	uint8_t       peer_irk[16];
	uint8_t       local_irk[16];
} __packed;

#define BT_HCI_OP_LE_REM_DEV_FROM_RL            BT_OP(BT_OGF_LE, 0x0028)
struct bt_hci_cp_le_rem_dev_from_rl {
	bt_addr_le_t  peer_id_addr;
} __packed;

#define BT_HCI_OP_LE_CLEAR_RL                   BT_OP(BT_OGF_LE, 0x0029)

#define BT_HCI_OP_LE_READ_RL_SIZE               BT_OP(BT_OGF_LE, 0x002a)
struct bt_hci_rp_le_read_rl_size {
	uint8_t  status;
	uint8_t  rl_size;
} __packed;

#define BT_HCI_OP_LE_READ_PEER_RPA              BT_OP(BT_OGF_LE, 0x002b)
struct bt_hci_cp_le_read_peer_rpa {
	bt_addr_le_t  peer_id_addr;
} __packed;
struct bt_hci_rp_le_read_peer_rpa {
	uint8_t    status;
	bt_addr_t  peer_rpa;
} __packed;

#define BT_HCI_OP_LE_READ_LOCAL_RPA             BT_OP(BT_OGF_LE, 0x002c)
struct bt_hci_cp_le_read_local_rpa {
	bt_addr_le_t  peer_id_addr;
} __packed;
struct bt_hci_rp_le_read_local_rpa {
	uint8_t    status;
	bt_addr_t  local_rpa;
} __packed;

#define BT_HCI_ADDR_RES_DISABLE                 0x00
#define BT_HCI_ADDR_RES_ENABLE                  0x01

#define BT_HCI_OP_LE_SET_ADDR_RES_ENABLE        BT_OP(BT_OGF_LE, 0x002d)
struct bt_hci_cp_le_set_addr_res_enable {
	uint8_t  enable;
} __packed;

#define BT_HCI_OP_LE_SET_RPA_TIMEOUT            BT_OP(BT_OGF_LE, 0x002e)
struct bt_hci_cp_le_set_rpa_timeout {
	uint16_t rpa_timeout;
} __packed;

#define BT_HCI_OP_LE_READ_MAX_DATA_LEN          BT_OP(BT_OGF_LE, 0x002f)
struct bt_hci_rp_le_read_max_data_len {
	uint8_t  status;
	uint16_t max_tx_octets;
	uint16_t max_tx_time;
	uint16_t max_rx_octets;
	uint16_t max_rx_time;
} __packed;

#define BT_HCI_LE_PHY_1M                        0x01
#define BT_HCI_LE_PHY_2M                        0x02
#define BT_HCI_LE_PHY_CODED                     0x03

#define BT_HCI_OP_LE_READ_PHY                   BT_OP(BT_OGF_LE, 0x0030)
struct bt_hci_cp_le_read_phy {
	uint16_t handle;
} __packed;
struct bt_hci_rp_le_read_phy {
	uint8_t  status;
	uint16_t handle;
	uint8_t  tx_phy;
	uint8_t  rx_phy;
} __packed;

#define BT_HCI_LE_PHY_TX_ANY                    BIT(0)
#define BT_HCI_LE_PHY_RX_ANY                    BIT(1)

#define BT_HCI_LE_PHY_PREFER_1M                 BIT(0)
#define BT_HCI_LE_PHY_PREFER_2M                 BIT(1)
#define BT_HCI_LE_PHY_PREFER_CODED              BIT(2)

#define BT_HCI_OP_LE_SET_DEFAULT_PHY            BT_OP(BT_OGF_LE, 0x0031)
struct bt_hci_cp_le_set_default_phy {
	uint8_t all_phys;
	uint8_t tx_phys;
	uint8_t rx_phys;
} __packed;

#define BT_HCI_LE_PHY_CODED_ANY                 0x00
#define BT_HCI_LE_PHY_CODED_S2                  0x01
#define BT_HCI_LE_PHY_CODED_S8                  0x02

#define BT_HCI_OP_LE_SET_PHY                    BT_OP(BT_OGF_LE, 0x0032)
struct bt_hci_cp_le_set_phy {
	uint16_t  handle;
	uint8_t   all_phys;
	uint8_t   tx_phys;
	uint8_t   rx_phys;
	uint16_t  phy_opts;
} __packed;

#define BT_HCI_LE_MOD_INDEX_STANDARD            0x00
#define BT_HCI_LE_MOD_INDEX_STABLE              0x01

#define BT_HCI_LE_RX_PHY_1M                     0x01
#define BT_HCI_LE_RX_PHY_2M                     0x02
#define BT_HCI_LE_RX_PHY_CODED                  0x03

#define BT_HCI_OP_LE_ENH_RX_TEST                BT_OP(BT_OGF_LE, 0x0033)
struct bt_hci_cp_le_enh_rx_test {
	uint8_t  rx_ch;
	uint8_t  phy;
	uint8_t  mod_index;
} __packed;

#define BT_HCI_LE_TX_PHY_1M                     0x01
#define BT_HCI_LE_TX_PHY_2M                     0x02
#define BT_HCI_LE_TX_PHY_CODED_S8               0x03
#define BT_HCI_LE_TX_PHY_CODED_S2               0x04

#define BT_HCI_OP_LE_ENH_TX_TEST                BT_OP(BT_OGF_LE, 0x0034)
struct bt_hci_cp_le_enh_tx_test {
	uint8_t  tx_ch;
	uint8_t  test_data_len;
	uint8_t  pkt_payload;
	uint8_t  phy;
} __packed;

#define BT_HCI_OP_LE_SET_ADV_SET_RANDOM_ADDR    BT_OP(BT_OGF_LE, 0x0035)
struct bt_hci_cp_le_set_adv_set_random_addr {
	uint8_t   handle;
	bt_addr_t bdaddr;
} __packed;

#define BT_HCI_LE_ADV_PROP_CONN                 BIT(0)
#define BT_HCI_LE_ADV_PROP_SCAN                 BIT(1)
#define BT_HCI_LE_ADV_PROP_DIRECT               BIT(2)
#define BT_HCI_LE_ADV_PROP_HI_DC_CONN           BIT(3)
#define BT_HCI_LE_ADV_PROP_LEGACY               BIT(4)
#define BT_HCI_LE_ADV_PROP_ANON                 BIT(5)
#define BT_HCI_LE_ADV_PROP_TX_POWER             BIT(6)

#define BT_HCI_LE_PRIM_ADV_INTERVAL_MIN         0x000020
#define BT_HCI_LE_PRIM_ADV_INTERVAL_MAX         0xFFFFFF

#define BT_HCI_LE_ADV_SCAN_REQ_ENABLE  1
#define BT_HCI_LE_ADV_SCAN_REQ_DISABLE 0

#define BT_HCI_LE_ADV_TX_POWER_NO_PREF 0x7F

#define BT_HCI_LE_ADV_HANDLE_MAX       0xEF

#define BT_HCI_LE_EXT_ADV_SID_INVALID  0xFF

#define BT_HCI_OP_LE_SET_EXT_ADV_PARAM          BT_OP(BT_OGF_LE, 0x0036)
struct bt_hci_cp_le_set_ext_adv_param {
	uint8_t      handle;
	uint16_t     props;
	uint8_t      prim_min_interval[3];
	uint8_t      prim_max_interval[3];
	uint8_t      prim_channel_map;
	uint8_t      own_addr_type;
	bt_addr_le_t peer_addr;
	uint8_t      filter_policy;
	int8_t       tx_power;
	uint8_t      prim_adv_phy;
	uint8_t      sec_adv_max_skip;
	uint8_t      sec_adv_phy;
	uint8_t      sid;
	uint8_t      scan_req_notify_enable;
} __packed;
struct bt_hci_rp_le_set_ext_adv_param {
	uint8_t status;
	int8_t  tx_power;
} __packed;

#define BT_HCI_LE_EXT_ADV_OP_INTERM_FRAG        0x00
#define BT_HCI_LE_EXT_ADV_OP_FIRST_FRAG         0x01
#define BT_HCI_LE_EXT_ADV_OP_LAST_FRAG          0x02
#define BT_HCI_LE_EXT_ADV_OP_COMPLETE_DATA      0x03
#define BT_HCI_LE_EXT_ADV_OP_UNCHANGED_DATA     0x04

#define BT_HCI_LE_EXT_ADV_FRAG_ENABLED          0x00
#define BT_HCI_LE_EXT_ADV_FRAG_DISABLED         0x01

#define BT_HCI_LE_EXT_ADV_FRAG_MAX_LEN          251

#define BT_HCI_OP_LE_SET_EXT_ADV_DATA           BT_OP(BT_OGF_LE, 0x0037)
struct bt_hci_cp_le_set_ext_adv_data {
	uint8_t  handle;
	uint8_t  op;
	uint8_t  frag_pref;
	uint8_t  len;
	uint8_t  data[0];
} __packed;

#define BT_HCI_OP_LE_SET_EXT_SCAN_RSP_DATA      BT_OP(BT_OGF_LE, 0x0038)
struct bt_hci_cp_le_set_ext_scan_rsp_data {
	uint8_t  handle;
	uint8_t  op;
	uint8_t  frag_pref;
	uint8_t  len;
	uint8_t  data[0];
} __packed;

#define BT_HCI_OP_LE_SET_EXT_ADV_ENABLE         BT_OP(BT_OGF_LE, 0x0039)
struct bt_hci_ext_adv_set {
	uint8_t  handle;
	uint16_t duration;
	uint8_t  max_ext_adv_evts;
} __packed;

struct bt_hci_cp_le_set_ext_adv_enable {
	uint8_t  enable;
	uint8_t  set_num;
	struct bt_hci_ext_adv_set s[0];
} __packed;

#define BT_HCI_OP_LE_READ_MAX_ADV_DATA_LEN      BT_OP(BT_OGF_LE, 0x003a)
struct bt_hci_rp_le_read_max_adv_data_len {
	uint8_t  status;
	uint16_t max_adv_data_len;
} __packed;

#define BT_HCI_OP_LE_READ_NUM_ADV_SETS          BT_OP(BT_OGF_LE, 0x003b)
struct bt_hci_rp_le_read_num_adv_sets {
	uint8_t  status;
	uint8_t  num_sets;
} __packed;

#define BT_HCI_OP_LE_REMOVE_ADV_SET             BT_OP(BT_OGF_LE, 0x003c)
struct bt_hci_cp_le_remove_adv_set {
	uint8_t  handle;
} __packed;

#define BT_HCI_OP_CLEAR_ADV_SETS                BT_OP(BT_OGF_LE, 0x003d)

#define BT_HCI_LE_PER_ADV_INTERVAL_MIN          0x0006
#define BT_HCI_LE_PER_ADV_INTERVAL_MAX          0xFFFF

#define BT_HCI_OP_LE_SET_PER_ADV_PARAM          BT_OP(BT_OGF_LE, 0x003e)
struct bt_hci_cp_le_set_per_adv_param {
	uint8_t  handle;
	uint16_t min_interval;
	uint16_t max_interval;
	uint16_t props;
} __packed;

#define BT_HCI_LE_PER_ADV_OP_INTERM_FRAG        0x00
#define BT_HCI_LE_PER_ADV_OP_FIRST_FRAG         0x01
#define BT_HCI_LE_PER_ADV_OP_LAST_FRAG          0x02
#define BT_HCI_LE_PER_ADV_OP_COMPLETE_DATA      0x03

#define BT_HCI_LE_PER_ADV_FRAG_MAX_LEN          252

#define BT_HCI_OP_LE_SET_PER_ADV_DATA           BT_OP(BT_OGF_LE, 0x003f)
struct bt_hci_cp_le_set_per_adv_data {
	uint8_t  handle;
	uint8_t  op;
	uint8_t  len;
	uint8_t  data[0];
} __packed;

#define BT_HCI_LE_SET_PER_ADV_ENABLE_ENABLE     BIT(0)
#define BT_HCI_LE_SET_PER_ADV_ENABLE_ADI        BIT(1)

#define BT_HCI_OP_LE_SET_PER_ADV_ENABLE         BT_OP(BT_OGF_LE, 0x0040)
struct bt_hci_cp_le_set_per_adv_enable {
	uint8_t  enable;
	uint8_t  handle;
} __packed;

#define BT_HCI_OP_LE_SET_EXT_SCAN_PARAM         BT_OP(BT_OGF_LE, 0x0041)
struct bt_hci_ext_scan_phy {
	uint8_t  type;
	uint16_t interval;
	uint16_t window;
} __packed;

#define BT_HCI_LE_EXT_SCAN_PHY_1M               BIT(0)
#define BT_HCI_LE_EXT_SCAN_PHY_2M               BIT(1)
#define BT_HCI_LE_EXT_SCAN_PHY_CODED            BIT(2)

struct bt_hci_cp_le_set_ext_scan_param {
	uint8_t  own_addr_type;
	uint8_t  filter_policy;
	uint8_t  phys;
	struct bt_hci_ext_scan_phy p[0];
} __packed;

/* Extends BT_HCI_LE_SCAN_FILTER_DUP */
#define BT_HCI_LE_EXT_SCAN_FILTER_DUP_ENABLE_RESET  0x02

#define BT_HCI_OP_LE_SET_EXT_SCAN_ENABLE        BT_OP(BT_OGF_LE, 0x0042)
struct bt_hci_cp_le_set_ext_scan_enable {
	uint8_t  enable;
	uint8_t  filter_dup;
	uint16_t duration;
	uint16_t period;
} __packed;

#define BT_HCI_OP_LE_EXT_CREATE_CONN            BT_OP(BT_OGF_LE, 0x0043)
struct bt_hci_ext_conn_phy {
	uint16_t scan_interval;
	uint16_t scan_window;
	uint16_t conn_interval_min;
	uint16_t conn_interval_max;
	uint16_t conn_latency;
	uint16_t supervision_timeout;
	uint16_t min_ce_len;
	uint16_t max_ce_len;
} __packed;

struct bt_hci_cp_le_ext_create_conn {
	uint8_t      filter_policy;
	uint8_t      own_addr_type;
	bt_addr_le_t peer_addr;
	uint8_t      phys;
	struct bt_hci_ext_conn_phy p[0];
} __packed;

#define BT_HCI_LE_PER_ADV_CREATE_SYNC_FP_USE_LIST               BIT(0)
#define BT_HCI_LE_PER_ADV_CREATE_SYNC_FP_REPORTS_DISABLED       BIT(1)
#define BT_HCI_LE_PER_ADV_CREATE_SYNC_FP_FILTER_DUPLICATE       BIT(2)

#define BT_HCI_LE_PER_ADV_CREATE_SYNC_CTE_TYPE_NO_FILTERING     0
#define BT_HCI_LE_PER_ADV_CREATE_SYNC_CTE_TYPE_NO_AOA           BIT(0)
#define BT_HCI_LE_PER_ADV_CREATE_SYNC_CTE_TYPE_NO_AOD_1US       BIT(1)
#define BT_HCI_LE_PER_ADV_CREATE_SYNC_CTE_TYPE_NO_AOD_2US       BIT(2)
#define BT_HCI_LE_PER_ADV_CREATE_SYNC_CTE_TYPE_NO_CTE           BIT(3)
#define BT_HCI_LE_PER_ADV_CREATE_SYNC_CTE_TYPE_ONLY_CTE         BIT(4)
/* Constants to check correctness of CTE type */
#define BT_HCI_LE_PER_ADV_CREATE_SYNC_CTE_TYPE_ALLOWED_BITS 5
#define BT_HCI_LE_PER_ADV_CREATE_SYNC_CTE_TYPE_INVALID_VALUE \
	(~BIT_MASK(BT_HCI_LE_PER_ADV_CREATE_SYNC_CTE_TYPE_ALLOWED_BITS))

#define BT_HCI_OP_LE_PER_ADV_CREATE_SYNC        BT_OP(BT_OGF_LE, 0x0044)
struct bt_hci_cp_le_per_adv_create_sync {
	uint8_t options;
	uint8_t      sid;
	bt_addr_le_t addr;
	uint16_t     skip;
	uint16_t     sync_timeout;
	uint8_t      cte_type;
} __packed;

#define BT_HCI_OP_LE_PER_ADV_CREATE_SYNC_CANCEL BT_OP(BT_OGF_LE, 0x0045)

#define BT_HCI_OP_LE_PER_ADV_TERMINATE_SYNC     BT_OP(BT_OGF_LE, 0x0046)
struct bt_hci_cp_le_per_adv_terminate_sync {
	uint16_t handle;
} __packed;

#define BT_HCI_OP_LE_ADD_DEV_TO_PER_ADV_LIST    BT_OP(BT_OGF_LE, 0x0047)
struct bt_hci_cp_le_add_dev_to_per_adv_list {
	bt_addr_le_t addr;
	uint8_t      sid;
} __packed;

#define BT_HCI_OP_LE_REM_DEV_FROM_PER_ADV_LIST  BT_OP(BT_OGF_LE, 0x0048)
struct bt_hci_cp_le_rem_dev_from_per_adv_list {
	bt_addr_le_t addr;
	uint8_t      sid;
} __packed;

#define BT_HCI_OP_LE_CLEAR_PER_ADV_LIST         BT_OP(BT_OGF_LE, 0x0049)

#define BT_HCI_OP_LE_READ_PER_ADV_LIST_SIZE     BT_OP(BT_OGF_LE, 0x004a)
struct bt_hci_rp_le_read_per_adv_list_size {
	uint8_t  status;
	uint8_t  list_size;
} __packed;

#define BT_HCI_OP_LE_READ_TX_POWER              BT_OP(BT_OGF_LE, 0x004b)
struct bt_hci_rp_le_read_tx_power {
	uint8_t status;
	int8_t  min_tx_power;
	int8_t  max_tx_power;
} __packed;

#define BT_HCI_OP_LE_READ_RF_PATH_COMP          BT_OP(BT_OGF_LE, 0x004c)
struct bt_hci_rp_le_read_rf_path_comp {
	uint8_t status;
	int16_t tx_path_comp;
	int16_t rx_path_comp;
} __packed;

#define BT_HCI_OP_LE_WRITE_RF_PATH_COMP         BT_OP(BT_OGF_LE, 0x004d)
struct bt_hci_cp_le_write_rf_path_comp {
	int16_t  tx_path_comp;
	int16_t  rx_path_comp;
} __packed;

#define BT_HCI_LE_PRIVACY_MODE_NETWORK          0x00
#define BT_HCI_LE_PRIVACY_MODE_DEVICE           0x01

#define BT_HCI_OP_LE_SET_PRIVACY_MODE           BT_OP(BT_OGF_LE, 0x004e)
struct bt_hci_cp_le_set_privacy_mode {
	bt_addr_le_t id_addr;
	uint8_t         mode;
} __packed;

#define BT_HCI_LE_TEST_CTE_DISABLED             0x00
#define BT_HCI_LE_TEST_CTE_TYPE_ANY             0x00
#define BT_HCI_LE_TEST_SLOT_DURATION_ANY        0x00
#define BT_HCI_LE_TEST_SWITCH_PATTERN_LEN_ANY   0x00

#define BT_HCI_OP_LE_RX_TEST_V3                 BT_OP(BT_OGF_LE, 0x004f)
struct bt_hci_cp_le_rx_test_v3 {
	uint8_t  rx_ch;
	uint8_t  phy;
	uint8_t  mod_index;
	uint8_t  expected_cte_len;
	uint8_t  expected_cte_type;
	uint8_t  slot_durations;
	uint8_t  switch_pattern_len;
	uint8_t  ant_ids[0];
} __packed;

#define BT_HCI_OP_LE_TX_TEST_V3                 BT_OP(BT_OGF_LE, 0x0050)

struct bt_hci_cp_le_tx_test_v3 {
	uint8_t  tx_ch;
	uint8_t  test_data_len;
	uint8_t  pkt_payload;
	uint8_t  phy;
	uint8_t  cte_len;
	uint8_t  cte_type;
	uint8_t  switch_pattern_len;
	uint8_t  ant_ids[0];
} __packed;

/* Min and max Constant Tone Extension length in 8us units */
#define BT_HCI_LE_CTE_LEN_MIN                  0x2
#define BT_HCI_LE_CTE_LEN_MAX                  0x14

#define BT_HCI_LE_AOA_CTE                      0x0
#define BT_HCI_LE_AOD_CTE_1US                  0x1
#define BT_HCI_LE_AOD_CTE_2US                  0x2
#define BT_HCI_LE_NO_CTE                       0xFF

#define BT_HCI_LE_CTE_COUNT_MIN                0x1
#define BT_HCI_LE_CTE_COUNT_MAX                0x10

#define BT_HCI_OP_LE_SET_CL_CTE_TX_PARAMS      BT_OP(BT_OGF_LE, 0x0051)
struct bt_hci_cp_le_set_cl_cte_tx_params {
	uint8_t handle;
	uint8_t cte_len;
	uint8_t cte_type;
	uint8_t cte_count;
	uint8_t switch_pattern_len;
	uint8_t ant_ids[0];
} __packed;

#define BT_HCI_OP_LE_SET_CL_CTE_TX_ENABLE      BT_OP(BT_OGF_LE, 0x0052)
struct bt_hci_cp_le_set_cl_cte_tx_enable {
	uint8_t handle;
	uint8_t cte_enable;
} __packed;

#define BT_HCI_LE_ANTENNA_SWITCHING_SLOT_1US   0x1
#define BT_HCI_LE_ANTENNA_SWITCHING_SLOT_2US   0x2

#define BT_HCI_LE_SAMPLE_CTE_ALL               0x0
#define BT_HCI_LE_SAMPLE_CTE_COUNT_MIN         0x1
#define BT_HCI_LE_SAMPLE_CTE_COUNT_MAX         0x10

#define BT_HCI_OP_LE_SET_CL_CTE_SAMPLING_ENABLE BT_OP(BT_OGF_LE, 0x0053)
struct bt_hci_cp_le_set_cl_cte_sampling_enable {
	uint16_t sync_handle;
	uint8_t  sampling_enable;
	uint8_t  slot_durations;
	uint8_t  max_sampled_cte;
	uint8_t  switch_pattern_len;
	uint8_t  ant_ids[0];
} __packed;

struct bt_hci_rp_le_set_cl_cte_sampling_enable {
	uint8_t  status;
	uint16_t sync_handle;
} __packed;

#define BT_HCI_OP_LE_SET_CONN_CTE_RX_PARAMS BT_OP(BT_OGF_LE, 0x0054)
struct bt_hci_cp_le_set_conn_cte_rx_params {
	uint16_t handle;
	uint8_t  sampling_enable;
	uint8_t  slot_durations;
	uint8_t  switch_pattern_len;
	uint8_t  ant_ids[0];
} __packed;

struct bt_hci_rp_le_set_conn_cte_rx_params {
	uint8_t  status;
	uint16_t handle;
} __packed;

#define BT_HCI_LE_AOA_CTE_RSP                   BIT(0)
#define BT_HCI_LE_AOD_CTE_RSP_1US               BIT(1)
#define BT_HCI_LE_AOD_CTE_RSP_2US               BIT(2)

#define BT_HCI_LE_SWITCH_PATTERN_LEN_MIN        0x2
#define BT_HCI_LE_SWITCH_PATTERN_LEN_MAX        0x4B

#define BT_HCI_OP_LE_SET_CONN_CTE_TX_PARAMS     BT_OP(BT_OGF_LE, 0x0055)
struct bt_hci_cp_le_set_conn_cte_tx_params {
	uint16_t handle;
	uint8_t  cte_types;
	uint8_t  switch_pattern_len;
	uint8_t  ant_ids[0];
} __packed;

struct bt_hci_rp_le_set_conn_cte_tx_params {
	uint8_t  status;
	uint16_t handle;
} __packed;

/* Interval between consecutive CTE request procedure starts in number of connection events. */
#define BT_HCI_REQUEST_CTE_ONCE                0x0
#define BT_HCI_REQUEST_CTE_INTERVAL_MIN        0x1
#define BT_HCI_REQUEST_CTE_INTERVAL_MAX        0xFFFF

#define BT_HCI_OP_LE_CONN_CTE_REQ_ENABLE       BT_OP(BT_OGF_LE, 0x0056)
struct bt_hci_cp_le_conn_cte_req_enable {
	uint16_t handle;
	uint8_t  enable;
	uint16_t cte_request_interval;
	uint8_t  requested_cte_length;
	uint8_t  requested_cte_type;
} __packed;

struct bt_hci_rp_le_conn_cte_req_enable {
	uint8_t  status;
	uint16_t handle;
} __packed;

#define BT_HCI_OP_LE_CONN_CTE_RSP_ENABLE       BT_OP(BT_OGF_LE, 0x0057)
struct bt_hci_cp_le_conn_cte_rsp_enable {
	uint16_t handle;
	uint8_t  enable;
} __packed;

struct bt_hci_rp_le_conn_cte_rsp_enable {
	uint8_t  status;
	uint16_t handle;
} __packed;

#define BT_HCI_LE_1US_AOD_TX                    BIT(0)
#define BT_HCI_LE_1US_AOD_RX                    BIT(1)
#define BT_HCI_LE_1US_AOA_RX                    BIT(2)

#define BT_HCI_LE_NUM_ANT_MIN                   0x1
#define BT_HCI_LE_NUM_ANT_MAX                   0x4B

#define BT_HCI_LE_MAX_SWITCH_PATTERN_LEN_MIN    0x2
#define BT_HCI_LE_MAX_SWITCH_PATTERN_LEN_MAX    0x4B

#define BT_HCI_LE_MAX_CTE_LEN_MIN               0x2
#define BT_HCI_LE_MAX_CTE_LEN_MAX               0x14

#define BT_HCI_OP_LE_READ_ANT_INFO              BT_OP(BT_OGF_LE, 0x0058)
struct bt_hci_rp_le_read_ant_info {
	uint8_t status;
	uint8_t switch_sample_rates;
	uint8_t num_ant;
	uint8_t max_switch_pattern_len;
	uint8_t max_cte_len;
};

#define BT_HCI_LE_SET_PER_ADV_RECV_ENABLE_ENABLE           BIT(0)
#define BT_HCI_LE_SET_PER_ADV_RECV_ENABLE_FILTER_DUPLICATE BIT(1)

#define BT_HCI_OP_LE_SET_PER_ADV_RECV_ENABLE     BT_OP(BT_OGF_LE, 0x0059)
struct bt_hci_cp_le_set_per_adv_recv_enable {
	uint16_t handle;
	uint8_t  enable;
} __packed;

#define BT_HCI_OP_LE_PER_ADV_SYNC_TRANSFER      BT_OP(BT_OGF_LE, 0x005a)
struct bt_hci_cp_le_per_adv_sync_transfer {
	uint16_t conn_handle;
	uint16_t service_data;
	uint16_t sync_handle;
} __packed;

struct bt_hci_rp_le_per_adv_sync_transfer {
	uint8_t  status;
	uint16_t conn_handle;
} __packed;

#define BT_HCI_OP_LE_PER_ADV_SET_INFO_TRANSFER  BT_OP(BT_OGF_LE, 0x005b)
struct bt_hci_cp_le_per_adv_set_info_transfer {
	uint16_t conn_handle;
	uint16_t service_data;
	uint8_t  adv_handle;
} __packed;

struct bt_hci_rp_le_per_adv_set_info_transfer {
	uint8_t  status;
	uint16_t conn_handle;
} __packed;

#define BT_HCI_LE_PAST_MODE_NO_SYNC              0x00
#define BT_HCI_LE_PAST_MODE_NO_REPORTS           0x01
#define BT_HCI_LE_PAST_MODE_SYNC                 0x02

#define BT_HCI_LE_PAST_CTE_TYPE_NO_AOA           BIT(0)
#define BT_HCI_LE_PAST_CTE_TYPE_NO_AOD_1US       BIT(1)
#define BT_HCI_LE_PAST_CTE_TYPE_NO_AOD_2US       BIT(2)
#define BT_HCI_LE_PAST_CTE_TYPE_NO_CTE           BIT(3)
#define BT_HCI_LE_PAST_CTE_TYPE_ONLY_CTE         BIT(4)

#define BT_HCI_OP_LE_PAST_PARAM                 BT_OP(BT_OGF_LE, 0x005c)
struct bt_hci_cp_le_past_param {
	uint16_t conn_handle;
	uint8_t  mode;
	uint16_t skip;
	uint16_t timeout;
	uint8_t  cte_type;
} __packed;

struct bt_hci_rp_le_past_param {
	uint8_t  status;
	uint16_t conn_handle;
} __packed;

#define BT_HCI_OP_LE_DEFAULT_PAST_PARAM         BT_OP(BT_OGF_LE, 0x005d)
struct bt_hci_cp_le_default_past_param {
	uint8_t  mode;
	uint16_t skip;
	uint16_t timeout;
	uint8_t  cte_type;
} __packed;

struct bt_hci_rp_le_default_past_param {
	uint8_t  status;
} __packed;

#define BT_HCI_OP_LE_READ_BUFFER_SIZE_V2        BT_OP(BT_OGF_LE, 0x0060)
struct bt_hci_rp_le_read_buffer_size_v2 {
	uint8_t  status;
	uint16_t acl_max_len;
	uint8_t  acl_max_num;
	uint16_t iso_max_len;
	uint8_t  iso_max_num;
} __packed;

#define BT_HCI_OP_LE_READ_ISO_TX_SYNC           BT_OP(BT_OGF_LE, 0x0061)
struct bt_hci_cp_le_read_iso_tx_sync {
	uint16_t handle;
} __packed;

struct bt_hci_rp_le_read_iso_tx_sync {
	uint8_t  status;
	uint16_t handle;
	uint16_t seq;
	uint32_t timestamp;
	uint8_t  offset[3];
} __packed;

#define BT_HCI_OP_LE_SET_CIG_PARAMS             BT_OP(BT_OGF_LE, 0x0062)
struct bt_hci_cis_params {
	uint8_t  cis_id;
	uint16_t c_sdu;
	uint16_t p_sdu;
	uint8_t  c_phy;
	uint8_t  p_phy;
	uint8_t  c_rtn;
	uint8_t  p_rtn;
} __packed;

struct bt_hci_cp_le_set_cig_params {
	uint8_t  cig_id;
	uint8_t  c_interval[3];
	uint8_t  p_interval[3];
	uint8_t  sca;
	uint8_t  packing;
	uint8_t  framing;
	uint16_t c_latency;
	uint16_t p_latency;
	uint8_t  num_cis;
	struct bt_hci_cis_params cis[0];
} __packed;

struct bt_hci_rp_le_set_cig_params {
	uint8_t  status;
	uint8_t  cig_id;
	uint8_t  num_handles;
	uint16_t handle[0];
} __packed;

#define BT_HCI_OP_LE_SET_CIG_PARAMS_TEST        BT_OP(BT_OGF_LE, 0x0063)
struct bt_hci_cis_params_test {
	uint8_t  cis_id;
	uint8_t  nse;
	uint16_t c_sdu;
	uint16_t p_sdu;
	uint16_t c_pdu;
	uint16_t p_pdu;
	uint8_t  c_phy;
	uint8_t  p_phy;
	uint8_t  c_bn;
	uint8_t  p_bn;
} __packed;

struct bt_hci_cp_le_set_cig_params_test {
	uint8_t  cig_id;
	uint8_t  c_interval[3];
	uint8_t  p_interval[3];
	uint8_t  c_ft;
	uint8_t  p_ft;
	uint16_t iso_interval;
	uint8_t  sca;
	uint8_t  packing;
	uint8_t  framing;
	uint8_t  num_cis;
	struct bt_hci_cis_params_test cis[0];
} __packed;

struct bt_hci_rp_le_set_cig_params_test {
	uint8_t  status;
	uint8_t  cig_id;
	uint8_t  num_handles;
	uint16_t handle[0];
} __packed;

#define BT_HCI_OP_LE_CREATE_CIS                 BT_OP(BT_OGF_LE, 0x0064)
struct bt_hci_cis {
	uint16_t  cis_handle;
	uint16_t  acl_handle;
} __packed;

struct bt_hci_cp_le_create_cis {
	uint8_t  num_cis;
	struct bt_hci_cis cis[0];
} __packed;

#define BT_HCI_OP_LE_REMOVE_CIG                 BT_OP(BT_OGF_LE, 0x0065)
struct bt_hci_cp_le_remove_cig {
	uint8_t  cig_id;
} __packed;

struct bt_hci_rp_le_remove_cig {
	uint8_t  status;
	uint8_t  cig_id;
} __packed;

#define BT_HCI_OP_LE_ACCEPT_CIS                 BT_OP(BT_OGF_LE, 0x0066)
struct bt_hci_cp_le_accept_cis {
	uint16_t handle;
} __packed;

#define BT_HCI_OP_LE_REJECT_CIS                 BT_OP(BT_OGF_LE, 0x0067)
struct bt_hci_cp_le_reject_cis {
	uint16_t handle;
	uint8_t  reason;
} __packed;

struct bt_hci_rp_le_reject_cis {
	uint8_t  status;
	uint16_t handle;
} __packed;

#define BT_HCI_OP_LE_CREATE_BIG                 BT_OP(BT_OGF_LE, 0x0068)
struct bt_hci_cp_le_create_big {
	uint8_t  big_handle;
	uint8_t  adv_handle;
	uint8_t  num_bis;
	uint8_t  sdu_interval[3];
	uint16_t max_sdu;
	uint16_t max_latency;
	uint8_t  rtn;
	uint8_t  phy;
	uint8_t  packing;
	uint8_t  framing;
	uint8_t  encryption;
	uint8_t  bcode[16];
} __packed;

#define BT_HCI_OP_LE_CREATE_BIG_TEST            BT_OP(BT_OGF_LE, 0x0069)
struct bt_hci_cp_le_create_big_test {
	uint8_t  big_handle;
	uint8_t  adv_handle;
	uint8_t  num_bis;
	uint8_t  sdu_interval[3];
	uint16_t iso_interval;
	uint8_t  nse;
	uint16_t max_sdu;
	uint16_t max_pdu;
	uint8_t  phy;
	uint8_t  packing;
	uint8_t  framing;
	uint8_t  bn;
	uint8_t  irc;
	uint8_t  pto;
	uint8_t  encryption;
	uint8_t  bcode[16];
} __packed;

#define BT_HCI_OP_LE_TERMINATE_BIG              BT_OP(BT_OGF_LE, 0x006a)
struct bt_hci_cp_le_terminate_big {
	uint8_t  big_handle;
	uint8_t  reason;
} __packed;

#define BT_HCI_OP_LE_BIG_CREATE_SYNC            BT_OP(BT_OGF_LE, 0x006b)
struct bt_hci_cp_le_big_create_sync {
	uint8_t  big_handle;
	uint16_t sync_handle;
	uint8_t  encryption;
	uint8_t  bcode[16];
	uint8_t  mse;
	uint16_t sync_timeout;
	uint8_t  num_bis;
	uint8_t  bis[0];
} __packed;

#define BT_HCI_OP_LE_BIG_TERMINATE_SYNC         BT_OP(BT_OGF_LE, 0x006c)
struct bt_hci_cp_le_big_terminate_sync {
	uint8_t  big_handle;
} __packed;

struct bt_hci_rp_le_big_terminate_sync {
	uint8_t  status;
	uint8_t  big_handle;
} __packed;

#define BT_HCI_OP_LE_REQ_PEER_SC                BT_OP(BT_OGF_LE, 0x006d)
struct bt_hci_cp_le_req_peer_sca {
	uint16_t handle;
} __packed;

#define BT_HCI_OP_LE_SETUP_ISO_PATH             BT_OP(BT_OGF_LE, 0x006e)
struct bt_hci_cp_le_setup_iso_path {
	uint16_t handle;
	uint8_t  path_dir;
	uint8_t  path_id;
	struct bt_hci_cp_codec_id codec_id;
	uint8_t  controller_delay[3];
	uint8_t  codec_config_len;
	uint8_t  codec_config[0];
} __packed;

struct bt_hci_rp_le_setup_iso_path {
	uint8_t  status;
	uint16_t handle;
} __packed;

#define BT_HCI_OP_LE_REMOVE_ISO_PATH            BT_OP(BT_OGF_LE, 0x006f)
struct bt_hci_cp_le_remove_iso_path {
	uint16_t handle;
	uint8_t  path_dir;
} __packed;

struct bt_hci_rp_le_remove_iso_path {
	uint8_t  status;
	uint16_t handle;
} __packed;

#define BT_HCI_OP_LE_ISO_TRANSMIT_TEST          BT_OP(BT_OGF_LE, 0x0070)
struct bt_hci_cp_le_iso_transmit_test {
	uint16_t handle;
	uint8_t  payload_type;
} __packed;

struct bt_hci_rp_le_iso_transmit_test {
	uint8_t  status;
	uint16_t handle;
} __packed;

#define BT_HCI_OP_LE_ISO_RECEIVE_TEST           BT_OP(BT_OGF_LE, 0x0071)
struct bt_hci_cp_le_iso_receive_test {
	uint16_t handle;
	uint8_t  payload_type;
} __packed;

struct bt_hci_rp_le_iso_receive_test {
	uint8_t  status;
	uint16_t handle;
} __packed;

#define BT_HCI_OP_LE_ISO_READ_TEST_COUNTERS     BT_OP(BT_OGF_LE, 0x0072)
struct bt_hci_cp_le_read_test_counters {
	uint16_t handle;
} __packed;

struct bt_hci_rp_le_read_test_counters {
	uint8_t  status;
	uint16_t handle;
	uint32_t received_cnt;
	uint32_t missed_cnt;
	uint32_t failed_cnt;
} __packed;

#define BT_HCI_OP_LE_ISO_TEST_END               BT_OP(BT_OGF_LE, 0x0073)
struct bt_hci_cp_le_iso_test_end {
	uint16_t handle;
} __packed;

struct bt_hci_rp_le_iso_test_end {
	uint8_t  status;
	uint16_t handle;
	uint32_t received_cnt;
	uint32_t missed_cnt;
	uint32_t failed_cnt;
} __packed;

#define BT_HCI_OP_LE_SET_HOST_FEATURE           BT_OP(BT_OGF_LE, 0x0074)
struct bt_hci_cp_le_set_host_feature {
	uint8_t  bit_number;
	uint8_t  bit_value;
} __packed;

struct bt_hci_rp_le_set_host_feature {
	uint8_t  status;
} __packed;

#define BT_HCI_OP_LE_READ_ISO_LINK_QUALITY      BT_OP(BT_OGF_LE, 0x0075)
struct bt_hci_cp_le_read_iso_link_quality {
	uint16_t handle;
} __packed;

struct bt_hci_rp_le_read_iso_link_quality {
	uint8_t  status;
	uint16_t handle;
	uint32_t tx_unacked_packets;
	uint32_t tx_flushed_packets;
	uint32_t tx_last_subevent_packets;
	uint32_t retransmitted_packets;
	uint32_t crc_error_packets;
	uint32_t rx_unreceived_packets;
	uint32_t duplicate_packets;
} __packed;

#define BT_HCI_OP_LE_TX_TEST_V4                 BT_OP(BT_OGF_LE, 0x007B)

struct bt_hci_cp_le_tx_test_v4 {
	uint8_t  tx_ch;
	uint8_t  test_data_len;
	uint8_t  pkt_payload;
	uint8_t  phy;
	uint8_t  cte_len;
	uint8_t  cte_type;
	uint8_t  switch_pattern_len;
	uint8_t  ant_ids[0];
} __packed;

#define BT_HCI_TX_TEST_POWER_MIN -0x7F
#define BT_HCI_TX_TEST_POWER_MAX 0x14

#define BT_HCI_TX_TEST_POWER_MIN_SET 0x7E
#define BT_HCI_TX_TEST_POWER_MAX_SET 0x7F

/* Helper structure for Tx power parameter in the HCI Tx Test v4 command.
 * Previous parameter of this command is variable size so having separated structure
 * for this parameter helps in command parameters unpacking.
 */
struct bt_hci_cp_le_tx_test_v4_tx_power {
	int8_t tx_power;
} __packed;

/* Event definitions */

#define BT_HCI_EVT_UNKNOWN                      0x00
#define BT_HCI_EVT_VENDOR                       0xff

#define BT_HCI_EVT_INQUIRY_COMPLETE             0x01
struct bt_hci_evt_inquiry_complete {
	uint8_t status;
} __packed;

#define BT_HCI_EVT_CONN_COMPLETE                0x03
struct bt_hci_evt_conn_complete {
	uint8_t   status;
	uint16_t  handle;
	bt_addr_t bdaddr;
	uint8_t   link_type;
	uint8_t   encr_enabled;
} __packed;

#define BT_HCI_EVT_CONN_REQUEST                 0x04
struct bt_hci_evt_conn_request {
	bt_addr_t bdaddr;
	uint8_t   dev_class[3];
	uint8_t   link_type;
} __packed;

#define BT_HCI_EVT_DISCONN_COMPLETE             0x05
struct bt_hci_evt_disconn_complete {
	uint8_t  status;
	uint16_t handle;
	uint8_t  reason;
} __packed;

#define BT_HCI_EVT_AUTH_COMPLETE                0x06
struct bt_hci_evt_auth_complete {
	uint8_t  status;
	uint16_t handle;
} __packed;

#define BT_HCI_EVT_REMOTE_NAME_REQ_COMPLETE     0x07
struct bt_hci_evt_remote_name_req_complete {
	uint8_t   status;
	bt_addr_t bdaddr;
	uint8_t   name[248];
} __packed;

#define BT_HCI_EVT_ENCRYPT_CHANGE               0x08
struct bt_hci_evt_encrypt_change {
	uint8_t  status;
	uint16_t handle;
	uint8_t  encrypt;
} __packed;

#define BT_HCI_EVT_REMOTE_FEATURES              0x0b
struct bt_hci_evt_remote_features {
	uint8_t  status;
	uint16_t handle;
	uint8_t  features[8];
} __packed;

#define BT_HCI_EVT_REMOTE_VERSION_INFO          0x0c
struct bt_hci_evt_remote_version_info {
	uint8_t  status;
	uint16_t handle;
	uint8_t  version;
	uint16_t manufacturer;
	uint16_t subversion;
} __packed;

#define BT_HCI_EVT_CMD_COMPLETE                 0x0e
struct bt_hci_evt_cmd_complete {
	uint8_t  ncmd;
	uint16_t opcode;
} __packed;

struct bt_hci_evt_cc_status {
	uint8_t  status;
} __packed;

#define BT_HCI_EVT_CMD_STATUS                   0x0f
struct bt_hci_evt_cmd_status {
	uint8_t  status;
	uint8_t  ncmd;
	uint16_t opcode;
} __packed;

#define BT_HCI_EVT_HARDWARE_ERROR               0x10
struct bt_hci_evt_hardware_error {
	uint8_t  hardware_code;
} __packed;

#define BT_HCI_EVT_ROLE_CHANGE                  0x12
struct bt_hci_evt_role_change {
	uint8_t   status;
	bt_addr_t bdaddr;
	uint8_t   role;
} __packed;

#define BT_HCI_EVT_NUM_COMPLETED_PACKETS        0x13
struct bt_hci_evt_num_completed_packets {
	uint8_t  num_handles;
	struct bt_hci_handle_count h[0];
} __packed;

#define BT_HCI_EVT_PIN_CODE_REQ                 0x16
struct bt_hci_evt_pin_code_req {
	bt_addr_t bdaddr;
} __packed;

#define BT_HCI_EVT_LINK_KEY_REQ                 0x17
struct bt_hci_evt_link_key_req {
	bt_addr_t bdaddr;
} __packed;

/* Link Key types */
#define BT_LK_COMBINATION                       0x00
#define BT_LK_LOCAL_UNIT                        0x01
#define BT_LK_REMOTE_UNIT                       0x02
#define BT_LK_DEBUG_COMBINATION                 0x03
#define BT_LK_UNAUTH_COMBINATION_P192           0x04
#define BT_LK_AUTH_COMBINATION_P192             0x05
#define BT_LK_CHANGED_COMBINATION               0x06
#define BT_LK_UNAUTH_COMBINATION_P256           0x07
#define BT_LK_AUTH_COMBINATION_P256             0x08

#define BT_HCI_EVT_LINK_KEY_NOTIFY              0x18
struct bt_hci_evt_link_key_notify {
	bt_addr_t bdaddr;
	uint8_t   link_key[16];
	uint8_t   key_type;
} __packed;

/* Overflow link types */
#define BT_OVERFLOW_LINK_SYNCH                  0x00
#define BT_OVERFLOW_LINK_ACL                    0x01
#define BT_OVERFLOW_LINK_ISO                    0x02

#define BT_HCI_EVT_DATA_BUF_OVERFLOW            0x1a
struct bt_hci_evt_data_buf_overflow {
	uint8_t  link_type;
} __packed;

#define BT_HCI_EVT_INQUIRY_RESULT_WITH_RSSI     0x22
struct bt_hci_evt_inquiry_result_with_rssi {
	bt_addr_t addr;
	uint8_t   pscan_rep_mode;
	uint8_t   reserved;
	uint8_t   cod[3];
	uint16_t  clock_offset;
	int8_t    rssi;
} __packed;

#define BT_HCI_EVT_REMOTE_EXT_FEATURES          0x23
struct bt_hci_evt_remote_ext_features {
	uint8_t  status;
	uint16_t handle;
	uint8_t  page;
	uint8_t  max_page;
	uint8_t  features[8];
} __packed;

#define BT_HCI_EVT_SYNC_CONN_COMPLETE           0x2c
struct bt_hci_evt_sync_conn_complete {
	uint8_t    status;
	uint16_t   handle;
	bt_addr_t  bdaddr;
	uint8_t    link_type;
	uint8_t    tx_interval;
	uint8_t    retansmission_window;
	uint16_t   rx_pkt_length;
	uint16_t   tx_pkt_length;
	uint8_t    air_mode;
} __packed;

#define BT_HCI_EVT_EXTENDED_INQUIRY_RESULT      0x2f
struct bt_hci_evt_extended_inquiry_result {
	uint8_t    num_reports;
	bt_addr_t  addr;
	uint8_t    pscan_rep_mode;
	uint8_t    reserved;
	uint8_t    cod[3];
	uint16_t   clock_offset;
	int8_t     rssi;
	uint8_t    eir[240];
} __packed;

#define BT_HCI_EVT_ENCRYPT_KEY_REFRESH_COMPLETE 0x30
struct bt_hci_evt_encrypt_key_refresh_complete {
	uint8_t  status;
	uint16_t handle;
} __packed;

#define BT_HCI_EVT_IO_CAPA_REQ                  0x31
struct bt_hci_evt_io_capa_req {
	bt_addr_t bdaddr;
} __packed;

#define BT_HCI_EVT_IO_CAPA_RESP                 0x32
struct bt_hci_evt_io_capa_resp {
	bt_addr_t bdaddr;
	uint8_t   capability;
	uint8_t   oob_data;
	uint8_t   authentication;
} __packed;

#define BT_HCI_EVT_USER_CONFIRM_REQ             0x33
struct bt_hci_evt_user_confirm_req {
	bt_addr_t bdaddr;
	uint32_t  passkey;
} __packed;

#define BT_HCI_EVT_USER_PASSKEY_REQ             0x34
struct bt_hci_evt_user_passkey_req {
	bt_addr_t bdaddr;
} __packed;

#define BT_HCI_EVT_SSP_COMPLETE                 0x36
struct bt_hci_evt_ssp_complete {
	uint8_t   status;
	bt_addr_t bdaddr;
} __packed;

#define BT_HCI_EVT_USER_PASSKEY_NOTIFY          0x3b
struct bt_hci_evt_user_passkey_notify {
	bt_addr_t bdaddr;
	uint32_t  passkey;
} __packed;

#define BT_HCI_EVT_LE_META_EVENT                0x3e
struct bt_hci_evt_le_meta_event {
	uint8_t  subevent;
} __packed;

#define BT_HCI_EVT_AUTH_PAYLOAD_TIMEOUT_EXP     0x57
struct bt_hci_evt_auth_payload_timeout_exp {
	uint16_t handle;
} __packed;

#define BT_HCI_ROLE_CENTRAL                     0x00
#define BT_HCI_ROLE_PERIPHERAL                  0x01

#define BT_HCI_EVT_LE_CONN_COMPLETE             0x01
struct bt_hci_evt_le_conn_complete {
	uint8_t      status;
	uint16_t     handle;
	uint8_t      role;
	bt_addr_le_t peer_addr;
	uint16_t     interval;
	uint16_t     latency;
	uint16_t     supv_timeout;
	uint8_t      clock_accuracy;
} __packed;

#define BT_HCI_LE_RSSI_NOT_AVAILABLE            0x7F

#define BT_HCI_EVT_LE_ADVERTISING_REPORT        0x02
struct bt_hci_evt_le_advertising_info {
	uint8_t      evt_type;
	bt_addr_le_t addr;
	uint8_t      length;
	uint8_t      data[0];
} __packed;
struct bt_hci_evt_le_advertising_report {
	uint8_t num_reports;
	struct bt_hci_evt_le_advertising_info adv_info[0];
} __packed;

#define BT_HCI_EVT_LE_CONN_UPDATE_COMPLETE      0x03
struct bt_hci_evt_le_conn_update_complete {
	uint8_t  status;
	uint16_t handle;
	uint16_t interval;
	uint16_t latency;
	uint16_t supv_timeout;
} __packed;

#define BT_HCI_EVT_LE_REMOTE_FEAT_COMPLETE      0x04
struct bt_hci_evt_le_remote_feat_complete {
	uint8_t  status;
	uint16_t handle;
	uint8_t  features[8];
} __packed;

#define BT_HCI_EVT_LE_LTK_REQUEST               0x05
struct bt_hci_evt_le_ltk_request {
	uint16_t handle;
	uint64_t rand;
	uint16_t ediv;
} __packed;

#define BT_HCI_EVT_LE_CONN_PARAM_REQ            0x06
struct bt_hci_evt_le_conn_param_req {
	uint16_t handle;
	uint16_t interval_min;
	uint16_t interval_max;
	uint16_t latency;
	uint16_t timeout;
} __packed;

#define BT_HCI_EVT_LE_DATA_LEN_CHANGE           0x07
struct bt_hci_evt_le_data_len_change {
	uint16_t handle;
	uint16_t max_tx_octets;
	uint16_t max_tx_time;
	uint16_t max_rx_octets;
	uint16_t max_rx_time;
} __packed;

#define BT_HCI_EVT_LE_P256_PUBLIC_KEY_COMPLETE  0x08
struct bt_hci_evt_le_p256_public_key_complete {
	uint8_t status;
	uint8_t key[64];
} __packed;

#define BT_HCI_EVT_LE_GENERATE_DHKEY_COMPLETE   0x09
struct bt_hci_evt_le_generate_dhkey_complete {
	uint8_t status;
	uint8_t dhkey[32];
} __packed;

#define BT_HCI_EVT_LE_ENH_CONN_COMPLETE         0x0a
struct bt_hci_evt_le_enh_conn_complete {
	uint8_t      status;
	uint16_t     handle;
	uint8_t      role;
	bt_addr_le_t peer_addr;
	bt_addr_t    local_rpa;
	bt_addr_t    peer_rpa;
	uint16_t     interval;
	uint16_t     latency;
	uint16_t     supv_timeout;
	uint8_t      clock_accuracy;
} __packed;

#define BT_HCI_EVT_LE_DIRECT_ADV_REPORT         0x0b
struct bt_hci_evt_le_direct_adv_info {
	uint8_t      evt_type;
	bt_addr_le_t addr;
	bt_addr_le_t dir_addr;
	int8_t       rssi;
} __packed;
struct bt_hci_evt_le_direct_adv_report {
	uint8_t num_reports;
	struct bt_hci_evt_le_direct_adv_info direct_adv_info[0];
} __packed;

#define BT_HCI_EVT_LE_PHY_UPDATE_COMPLETE       0x0c
struct bt_hci_evt_le_phy_update_complete {
	uint8_t  status;
	uint16_t handle;
	uint8_t  tx_phy;
	uint8_t  rx_phy;
} __packed;

#define BT_HCI_EVT_LE_EXT_ADVERTISING_REPORT    0x0d

#define BT_HCI_LE_ADV_EVT_TYPE_CONN                 BIT(0)
#define BT_HCI_LE_ADV_EVT_TYPE_SCAN                 BIT(1)
#define BT_HCI_LE_ADV_EVT_TYPE_DIRECT               BIT(2)
#define BT_HCI_LE_ADV_EVT_TYPE_SCAN_RSP             BIT(3)
#define BT_HCI_LE_ADV_EVT_TYPE_LEGACY               BIT(4)

#define BT_HCI_LE_ADV_EVT_TYPE_DATA_STATUS(ev_type) (((ev_type) >> 5) & 0x03)
#define BT_HCI_LE_ADV_EVT_TYPE_DATA_STATUS_COMPLETE   0
#define BT_HCI_LE_ADV_EVT_TYPE_DATA_STATUS_PARTIAL    1
#define BT_HCI_LE_ADV_EVT_TYPE_DATA_STATUS_INCOMPLETE 2

struct bt_hci_evt_le_ext_advertising_info {
	uint16_t     evt_type;
	bt_addr_le_t addr;
	uint8_t      prim_phy;
	uint8_t      sec_phy;
	uint8_t      sid;
	int8_t       tx_power;
	int8_t       rssi;
	uint16_t     interval;
	bt_addr_le_t direct_addr;
	uint8_t      length;
	uint8_t      data[0];
} __packed;
struct bt_hci_evt_le_ext_advertising_report {
	uint8_t num_reports;
	struct bt_hci_evt_le_ext_advertising_info adv_info[0];
} __packed;

#define BT_HCI_EVT_LE_PER_ADV_SYNC_ESTABLISHED  0x0e
struct bt_hci_evt_le_per_adv_sync_established {
	uint8_t      status;
	uint16_t     handle;
	uint8_t      sid;
	bt_addr_le_t adv_addr;
	uint8_t      phy;
	uint16_t     interval;
	uint8_t      clock_accuracy;
} __packed;

#define BT_HCI_EVT_LE_PER_ADVERTISING_REPORT    0x0f
struct bt_hci_evt_le_per_advertising_report {
	uint16_t handle;
	int8_t   tx_power;
	int8_t   rssi;
	uint8_t  cte_type;
	uint8_t  data_status;
	uint8_t  length;
	uint8_t  data[0];
} __packed;

#define BT_HCI_EVT_LE_PER_ADV_SYNC_LOST         0x10
struct bt_hci_evt_le_per_adv_sync_lost {
	uint16_t handle;
} __packed;

#define BT_HCI_EVT_LE_SCAN_TIMEOUT              0x11

#define BT_HCI_EVT_LE_ADV_SET_TERMINATED        0x12
struct bt_hci_evt_le_adv_set_terminated {
	uint8_t  status;
	uint8_t  adv_handle;
	uint16_t conn_handle;
	uint8_t  num_completed_ext_adv_evts;
} __packed;

#define BT_HCI_EVT_LE_SCAN_REQ_RECEIVED         0x13
struct bt_hci_evt_le_scan_req_received {
	uint8_t      handle;
	bt_addr_le_t addr;
} __packed;

#define BT_HCI_LE_CHAN_SEL_ALGO_1               0x00
#define BT_HCI_LE_CHAN_SEL_ALGO_2               0x01

#define BT_HCI_EVT_LE_CHAN_SEL_ALGO             0x14
struct bt_hci_evt_le_chan_sel_algo {
	uint16_t handle;
	uint8_t  chan_sel_algo;
} __packed;

#define BT_HCI_LE_CTE_CRC_OK                    0x0
#define BT_HCI_LE_CTE_CRC_ERR_CTE_BASED_TIME    0x1
#define BT_HCI_LE_CTE_CRC_ERR_CTE_BASED_OTHER   0x2
#define BT_HCI_LE_CTE_INSUFFICIENT_RESOURCES    0xFF

#define B_HCI_LE_CTE_REPORT_SAMPLE_COUNT_MIN    0x9
#define B_HCI_LE_CTE_REPORT_SAMPLE_COUNT_MAX    0x52

#define BT_HCI_LE_CTE_REPORT_NO_VALID_SAMPLE    0x80

#define BT_HCI_EVT_LE_CONNECTIONLESS_IQ_REPORT  0x15
struct bt_hci_le_iq_sample {
	int8_t i;
	int8_t q;
};

struct bt_hci_evt_le_connectionless_iq_report {
	uint16_t sync_handle;
	uint8_t  chan_idx;
	int16_t  rssi;
	uint8_t  rssi_ant_id;
	uint8_t  cte_type;
	uint8_t  slot_durations;
	uint8_t  packet_status;
	uint16_t per_evt_counter;
	uint8_t  sample_count;
	struct bt_hci_le_iq_sample sample[0];
} __packed;

#define BT_HCI_EVT_LE_CONNECTION_IQ_REPORT      0x16
struct bt_hci_evt_le_connection_iq_report {
	uint16_t conn_handle;
	uint8_t  rx_phy;
	uint8_t  data_chan_idx;
	int16_t  rssi;
	uint8_t  rssi_ant_id;
	uint8_t  cte_type;
	uint8_t  slot_durations;
	uint8_t  packet_status;
	uint16_t conn_evt_counter;
	uint8_t  sample_count;
	struct bt_hci_le_iq_sample sample[0];
} __packed;

#define BT_HCI_CTE_REQ_STATUS_RSP_WITHOUT_CTE  0x0

#define BT_HCI_EVT_LE_CTE_REQUEST_FAILED       0x17
struct bt_hci_evt_le_cte_req_failed {
	/* According to BT 5.3 Core Spec the status field may have following
	 * values:
	 * - BT_HCI_CTE_REQ_STATUS_RSP_WITHOUT_CTE when received LL_CTE_RSP_PDU without CTE.
	 * - Other Controller error code for peer rejected request.
	 */
	uint8_t  status;
	uint16_t conn_handle;
} __packed;

#define BT_HCI_EVT_LE_PAST_RECEIVED                0x18
struct bt_hci_evt_le_past_received {
	uint8_t      status;
	uint16_t     conn_handle;
	uint16_t     service_data;
	uint16_t     sync_handle;
	uint8_t      adv_sid;
	bt_addr_le_t addr;
	uint8_t      phy;
	uint16_t     interval;
	uint8_t      clock_accuracy;
} __packed;

#define BT_HCI_EVT_LE_CIS_ESTABLISHED           0x19
struct bt_hci_evt_le_cis_established {
	uint8_t  status;
	uint16_t conn_handle;
	uint8_t  cig_sync_delay[3];
	uint8_t  cis_sync_delay[3];
	uint8_t  c_latency[3];
	uint8_t  p_latency[3];
	uint8_t  c_phy;
	uint8_t  p_phy;
	uint8_t  nse;
	uint8_t  c_bn;
	uint8_t  p_bn;
	uint8_t  c_ft;
	uint8_t  p_ft;
	uint16_t c_max_pdu;
	uint16_t p_max_pdu;
	uint16_t interval;
} __packed;

#define BT_HCI_EVT_LE_CIS_REQ                   0x1a
struct bt_hci_evt_le_cis_req {
	uint16_t acl_handle;
	uint16_t cis_handle;
	uint8_t  cig_id;
	uint8_t  cis_id;
} __packed;

#define BT_HCI_EVT_LE_BIG_COMPLETE              0x1b
struct bt_hci_evt_le_big_complete {
	uint8_t  status;
	uint8_t  big_handle;
	uint8_t  sync_delay[3];
	uint8_t  latency[3];
	uint8_t  phy;
	uint8_t  nse;
	uint8_t  bn;
	uint8_t  pto;
	uint8_t  irc;
	uint16_t max_pdu;
	uint16_t iso_interval;
	uint8_t  num_bis;
	uint16_t handle[0];
} __packed;

#define BT_HCI_EVT_LE_BIG_TERMINATE             0x1c
struct bt_hci_evt_le_big_terminate {
	uint8_t  big_handle;
	uint8_t  reason;
} __packed;

#define BT_HCI_EVT_LE_BIG_SYNC_ESTABLISHED      0x1d
struct bt_hci_evt_le_big_sync_established {
	uint8_t  status;
	uint8_t  big_handle;
	uint8_t  latency[3];
	uint8_t  nse;
	uint8_t  bn;
	uint8_t  pto;
	uint8_t  irc;
	uint16_t max_pdu;
	uint16_t iso_interval;
	uint8_t  num_bis;
	uint16_t handle[0];
} __packed;

#define BT_HCI_EVT_LE_BIG_SYNC_LOST             0x1e
struct bt_hci_evt_le_big_sync_lost {
	uint8_t  big_handle;
	uint8_t  reason;
} __packed;

#define BT_HCI_EVT_LE_REQ_PEER_SCA_COMPLETE     0x1f
struct bt_hci_evt_le_req_peer_sca_complete {
	uint8_t  status;
	uint16_t handle;
	uint8_t  sca;
} __packed;

#define BT_HCI_EVT_LE_BIGINFO_ADV_REPORT        0x22
struct bt_hci_evt_le_biginfo_adv_report {
	uint16_t sync_handle;
	uint8_t  num_bis;
	uint8_t  nse;
	uint16_t iso_interval;
	uint8_t  bn;
	uint8_t  pto;
	uint8_t  irc;
	uint16_t max_pdu;
	uint8_t  sdu_interval[3];
	uint16_t max_sdu;
	uint8_t  phy;
	uint8_t  framing;
	uint8_t  encryption;
} __packed;

/* Event mask bits */

#define BT_EVT_BIT(n) (1ULL << (n))

#define BT_EVT_MASK_INQUIRY_COMPLETE             BT_EVT_BIT(0)
#define BT_EVT_MASK_CONN_COMPLETE                BT_EVT_BIT(2)
#define BT_EVT_MASK_CONN_REQUEST                 BT_EVT_BIT(3)
#define BT_EVT_MASK_DISCONN_COMPLETE             BT_EVT_BIT(4)
#define BT_EVT_MASK_AUTH_COMPLETE                BT_EVT_BIT(5)
#define BT_EVT_MASK_REMOTE_NAME_REQ_COMPLETE     BT_EVT_BIT(6)
#define BT_EVT_MASK_ENCRYPT_CHANGE               BT_EVT_BIT(7)
#define BT_EVT_MASK_REMOTE_FEATURES              BT_EVT_BIT(10)
#define BT_EVT_MASK_REMOTE_VERSION_INFO          BT_EVT_BIT(11)
#define BT_EVT_MASK_HARDWARE_ERROR               BT_EVT_BIT(15)
#define BT_EVT_MASK_ROLE_CHANGE                  BT_EVT_BIT(17)
#define BT_EVT_MASK_PIN_CODE_REQ                 BT_EVT_BIT(21)
#define BT_EVT_MASK_LINK_KEY_REQ                 BT_EVT_BIT(22)
#define BT_EVT_MASK_LINK_KEY_NOTIFY              BT_EVT_BIT(23)
#define BT_EVT_MASK_DATA_BUFFER_OVERFLOW         BT_EVT_BIT(25)
#define BT_EVT_MASK_INQUIRY_RESULT_WITH_RSSI     BT_EVT_BIT(33)
#define BT_EVT_MASK_REMOTE_EXT_FEATURES          BT_EVT_BIT(34)
#define BT_EVT_MASK_SYNC_CONN_COMPLETE           BT_EVT_BIT(43)
#define BT_EVT_MASK_EXTENDED_INQUIRY_RESULT      BT_EVT_BIT(46)
#define BT_EVT_MASK_ENCRYPT_KEY_REFRESH_COMPLETE BT_EVT_BIT(47)
#define BT_EVT_MASK_IO_CAPA_REQ                  BT_EVT_BIT(48)
#define BT_EVT_MASK_IO_CAPA_RESP                 BT_EVT_BIT(49)
#define BT_EVT_MASK_USER_CONFIRM_REQ             BT_EVT_BIT(50)
#define BT_EVT_MASK_USER_PASSKEY_REQ             BT_EVT_BIT(51)
#define BT_EVT_MASK_SSP_COMPLETE                 BT_EVT_BIT(53)
#define BT_EVT_MASK_USER_PASSKEY_NOTIFY          BT_EVT_BIT(58)
#define BT_EVT_MASK_LE_META_EVENT                BT_EVT_BIT(61)

/* Page 2 */
#define BT_EVT_MASK_NUM_COMPLETE_DATA_BLOCKS     BT_EVT_BIT(8)
#define BT_EVT_MASK_TRIGG_CLOCK_CAPTURE          BT_EVT_BIT(14)
#define BT_EVT_MASK_SYNCH_TRAIN_COMPLETE         BT_EVT_BIT(15)
#define BT_EVT_MASK_SYNCH_TRAIN_RX               BT_EVT_BIT(16)
#define BT_EVT_MASK_CL_PER_BC_RX                 BT_EVT_BIT(17)
#define BT_EVT_MASK_CL_PER_BC_TIMEOUT            BT_EVT_BIT(18)
#define BT_EVT_MASK_TRUNC_PAGE_COMPLETE          BT_EVT_BIT(19)
#define BT_EVT_MASK_PER_PAGE_RSP_TIMEOUT         BT_EVT_BIT(20)
#define BT_EVT_MASK_CL_PER_BC_CH_MAP_CHANGE      BT_EVT_BIT(21)
#define BT_EVT_MASK_INQUIRY_RSP_NOT              BT_EVT_BIT(22)
#define BT_EVT_MASK_AUTH_PAYLOAD_TIMEOUT_EXP     BT_EVT_BIT(23)
#define BT_EVT_MASK_SAM_STATUS_CHANGE            BT_EVT_BIT(24)

#define BT_EVT_MASK_LE_CONN_COMPLETE             BT_EVT_BIT(0)
#define BT_EVT_MASK_LE_ADVERTISING_REPORT        BT_EVT_BIT(1)
#define BT_EVT_MASK_LE_CONN_UPDATE_COMPLETE      BT_EVT_BIT(2)
#define BT_EVT_MASK_LE_REMOTE_FEAT_COMPLETE      BT_EVT_BIT(3)
#define BT_EVT_MASK_LE_LTK_REQUEST               BT_EVT_BIT(4)
#define BT_EVT_MASK_LE_CONN_PARAM_REQ            BT_EVT_BIT(5)
#define BT_EVT_MASK_LE_DATA_LEN_CHANGE           BT_EVT_BIT(6)
#define BT_EVT_MASK_LE_P256_PUBLIC_KEY_COMPLETE  BT_EVT_BIT(7)
#define BT_EVT_MASK_LE_GENERATE_DHKEY_COMPLETE   BT_EVT_BIT(8)
#define BT_EVT_MASK_LE_ENH_CONN_COMPLETE         BT_EVT_BIT(9)
#define BT_EVT_MASK_LE_DIRECT_ADV_REPORT         BT_EVT_BIT(10)
#define BT_EVT_MASK_LE_PHY_UPDATE_COMPLETE       BT_EVT_BIT(11)
#define BT_EVT_MASK_LE_EXT_ADVERTISING_REPORT    BT_EVT_BIT(12)
#define BT_EVT_MASK_LE_PER_ADV_SYNC_ESTABLISHED  BT_EVT_BIT(13)
#define BT_EVT_MASK_LE_PER_ADVERTISING_REPORT    BT_EVT_BIT(14)
#define BT_EVT_MASK_LE_PER_ADV_SYNC_LOST         BT_EVT_BIT(15)
#define BT_EVT_MASK_LE_SCAN_TIMEOUT              BT_EVT_BIT(16)
#define BT_EVT_MASK_LE_ADV_SET_TERMINATED        BT_EVT_BIT(17)
#define BT_EVT_MASK_LE_SCAN_REQ_RECEIVED         BT_EVT_BIT(18)
#define BT_EVT_MASK_LE_CHAN_SEL_ALGO             BT_EVT_BIT(19)
#define BT_EVT_MASK_LE_CONNECTIONLESS_IQ_REPORT  BT_EVT_BIT(20)
#define BT_EVT_MASK_LE_CONNECTION_IQ_REPORT      BT_EVT_BIT(21)
#define BT_EVT_MASK_LE_CTE_REQUEST_FAILED        BT_EVT_BIT(22)
#define BT_EVT_MASK_LE_PAST_RECEIVED             BT_EVT_BIT(23)
#define BT_EVT_MASK_LE_CIS_ESTABLISHED           BT_EVT_BIT(24)
#define BT_EVT_MASK_LE_CIS_REQ                   BT_EVT_BIT(25)
#define BT_EVT_MASK_LE_BIG_COMPLETE              BT_EVT_BIT(26)
#define BT_EVT_MASK_LE_BIG_TERMINATED            BT_EVT_BIT(27)
#define BT_EVT_MASK_LE_BIG_SYNC_ESTABLISHED      BT_EVT_BIT(28)
#define BT_EVT_MASK_LE_BIG_SYNC_LOST             BT_EVT_BIT(29)
#define BT_EVT_MASK_LE_REQ_PEER_SCA_COMPLETE     BT_EVT_BIT(30)
#define BT_EVT_MASK_LE_PATH_LOSS_THRESHOLD       BT_EVT_BIT(31)
#define BT_EVT_MASK_LE_TRANSMIT_POWER_REPORTING  BT_EVT_BIT(32)
#define BT_EVT_MASK_LE_BIGINFO_ADV_REPORT        BT_EVT_BIT(33)

/** Allocate a HCI command buffer.
  *
  * This function allocates a new buffer for a HCI command. It is given
  * the OpCode (encoded e.g. using the BT_OP macro) and the total length
  * of the parameters. Upon successful return the buffer is ready to have
  * the parameters encoded into it.
  *
  * @param opcode     Command OpCode.
  * @param param_len  Length of command parameters.
  *
  * @return Newly allocated buffer.
  */
struct net_buf *bt_hci_cmd_create(uint16_t opcode, uint8_t param_len);

/** Send a HCI command asynchronously.
  *
  * This function is used for sending a HCI command asynchronously. It can
  * either be called for a buffer created using bt_hci_cmd_create(), or
  * if the command has no parameters a NULL can be passed instead. The
  * sending of the command will happen asynchronously, i.e. upon successful
  * return from this function the caller only knows that it was queued
  * successfully.
  *
  * If synchronous behavior, and retrieval of the Command Complete parameters
  * is desired, the bt_hci_cmd_send_sync() API should be used instead.
  *
  * @param opcode Command OpCode.
  * @param buf    Command buffer or NULL (if no parameters).
  *
  * @return 0 on success or negative error value on failure.
  */
int bt_hci_cmd_send(uint16_t opcode, struct net_buf *buf);

/** Send a HCI command synchronously.
  *
  * This function is used for sending a HCI command synchronously. It can
  * either be called for a buffer created using bt_hci_cmd_create(), or
  * if the command has no parameters a NULL can be passed instead.
  *
  * The function will block until a Command Status or a Command Complete
  * event is returned. If either of these have a non-zero status the function
  * will return a negative error code and the response reference will not
  * be set. If the command completed successfully and a non-NULL rsp parameter
  * was given, this parameter will be set to point to a buffer containing
  * the response parameters.
  *
  * @param opcode Command OpCode.
  * @param buf    Command buffer or NULL (if no parameters).
  * @param rsp    Place to store a reference to the command response. May
  *               be NULL if the caller is not interested in the response
  *               parameters. If non-NULL is passed the caller is responsible
  *               for calling net_buf_unref() on the buffer when done parsing
  *               it.
  *
  * @return 0 on success or negative error value on failure.
  */
int bt_hci_cmd_send_sync(uint16_t opcode, struct net_buf *buf,
			 struct net_buf **rsp);

/** @brief Get connection handle for a connection.
 *
 * @param conn Connection object.
 * @param conn_handle Place to store the Connection handle.
 *
 * @return 0 on success or negative error value on failure.
 */
int bt_hci_get_conn_handle(const struct bt_conn *conn, uint16_t *conn_handle);

/** @brief Get advertising handle for an advertising set.
 *
 * @param adv Advertising set.
 * @param adv_handle Place to store the advertising handle.
 *
 * @return 0 on success or negative error value on failure.
 */
int bt_hci_get_adv_handle(const struct bt_le_ext_adv *adv, uint8_t *adv_handle);

/** @typedef bt_hci_vnd_evt_cb_t
  * @brief Callback type for vendor handling of HCI Vendor-Specific Events.
  *
  * A function of this type is registered with bt_hci_register_vnd_evt_cb()
  * and will be called for any HCI Vendor-Specific Event.
  *
  * @param buf Buffer containing event parameters.
  *
  * @return true if the function handles the event or false to defer the
  *         handling of this event back to the stack.
  */
typedef bool bt_hci_vnd_evt_cb_t(struct net_buf_simple *buf);

/** Register user callback for HCI Vendor-Specific Events
  *
  * @param cb Callback to be called when the stack receives a
  *           HCI Vendor-Specific Event.
  *
  * @return 0 on success or negative error value on failure.
  */
int bt_hci_register_vnd_evt_cb(bt_hci_vnd_evt_cb_t cb);

/** @brief Get Random bytes from the LE Controller.
 *
 * Send the HCI_LE_Rand to the LE Controller as many times as required to
 * fill the provided @p buffer.
 *
 * @note This function is provided as a helper to gather an arbitrary number of
 * random bytes from an LE Controller using the HCI_LE_Rand command.
 *
 * @param buffer Buffer to fill with random bytes.
 * @param len Length of the buffer in bytes.
 *
 * @return 0 on success or negative error value on failure.
 */
int bt_hci_le_rand(void *buffer, size_t len);


#ifdef __cplusplus
}
#endif

#endif /* ZEPHYR_INCLUDE_BLUETOOTH_HCI_H_ */