zephyr/subsys/bluetooth/controller/ll_sw/ull_llcp_internal.h
Erik Brockhoff 025b9745d3 Bluetooth: controller: implementing state check for ENC reply API
Now checking that encryption procedure is in correct state to accept
a reply from host.

Signed-off-by: Erik Brockhoff <erbr@oticon.com>
2022-04-27 10:09:03 +02:00

641 lines
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/*
* Copyright (c) 2020 Demant
*
* SPDX-License-Identifier: Apache-2.0
*/
/* LLCP Memory Pool Descriptor */
struct llcp_mem_pool {
void *free;
uint8_t *pool;
};
/* LLCP Procedure */
enum llcp_proc {
PROC_UNKNOWN,
PROC_LE_PING,
PROC_FEATURE_EXCHANGE,
PROC_MIN_USED_CHANS,
PROC_VERSION_EXCHANGE,
PROC_ENCRYPTION_START,
PROC_ENCRYPTION_PAUSE,
PROC_PHY_UPDATE,
PROC_CONN_UPDATE,
PROC_CONN_PARAM_REQ,
PROC_TERMINATE,
PROC_CHAN_MAP_UPDATE,
PROC_DATA_LENGTH_UPDATE,
PROC_CTE_REQ,
/* A helper enum entry, to use in pause procedure context */
PROC_NONE = 0x0,
};
enum llcp_tx_q_pause_data_mask {
LLCP_TX_QUEUE_PAUSE_DATA_ENCRYPTION = 0x01,
LLCP_TX_QUEUE_PAUSE_DATA_PHY_UPDATE = 0x02,
LLCP_TX_QUEUE_PAUSE_DATA_DATA_LENGTH = 0x04,
};
#if ((CONFIG_BT_CTLR_LLCP_COMMON_TX_CTRL_BUF_NUM <\
(CONFIG_BT_CTLR_LLCP_TX_PER_CONN_TX_CTRL_BUF_NUM_MAX *\
CONFIG_BT_CTLR_LLCP_CONN)) &&\
(CONFIG_BT_CTLR_LLCP_PER_CONN_TX_CTRL_BUF_NUM <\
CONFIG_BT_CTLR_LLCP_TX_PER_CONN_TX_CTRL_BUF_NUM_MAX))
#define LLCP_TX_CTRL_BUF_QUEUE_ENABLE
#define LLCP_TX_CTRL_BUF_COUNT ((CONFIG_BT_CTLR_LLCP_COMMON_TX_CTRL_BUF_NUM +\
(CONFIG_BT_CTLR_LLCP_CONN * CONFIG_BT_CTLR_LLCP_PER_CONN_TX_CTRL_BUF_NUM)))
#else
#define LLCP_TX_CTRL_BUF_COUNT (CONFIG_BT_CTLR_LLCP_TX_PER_CONN_TX_CTRL_BUF_NUM_MAX *\
CONFIG_BT_CTLR_LLCP_CONN)
#endif
#if defined(LLCP_TX_CTRL_BUF_QUEUE_ENABLE)
enum llcp_wait_reason {
WAITING_FOR_NOTHING,
WAITING_FOR_TX_BUFFER,
};
#endif /* LLCP_TX_CTRL_BUF_QUEUE_ENABLE */
#if defined(CONFIG_BT_CTLR_LE_ENC)
struct llcp_enc {
uint8_t error;
/* NOTE: To save memory, SKD(m|s) and IV(m|s) are
* generated just-in-time for PDU enqueuing and are
* therefore not present in this structure.
* Further candidates for optimizing memory layout.
* * Overlay memory
* * Repurpose memory used by lll.ccm_tx/rx?
*/
/* Central: Rand and EDIV are input copies from
* HCI that only live until the LL_ENC_REQ has
* been enqueued.
*
* Peripheral: Rand and EDIV are input copies from
* the LL_ENC_REQ that only live until host
* notification has been enqueued.
*/
/* 64 bit random number. */
uint8_t rand[8];
/* 16 bit encrypted diversifier.*/
uint8_t ediv[2];
/* 128 bit long term key. */
uint8_t ltk[16];
/* SKD is the concatenation of SKDm and SKDs and
* is used to calculate the session key, SK.
*
* Lifetime:
* M : Generate SKDm and IVm
* M->S : LL_ENC_REQ(Rand, EDIV, SKDm, IVm)
* S : Notify host (Rand, EDIV)
* S : Generate SKDs and IVs
* S : Calculate SK = e(LTK, SKD)
* M<-S : LL_ENC_RSP(SKDs, IVs)
* M : Calculate SK = e(LTK, SKD)
*
* where security function e generates 128-bit
* encryptedData from a 128-bit key and 128-bit
* plaintextData using the AES-128-bit block
* cypher as defined in FIPS-1971:
* encryptedData = e(key, plaintextData)
*/
union {
/* 128-bit session key diversifier */
uint8_t skd[16];
struct {
uint8_t skdm[8];
uint8_t skds[8];
};
};
};
#endif /* CONFIG_BT_CTLR_LE_ENC */
/* LLCP Procedure Context */
struct proc_ctx {
/* Must be the first for sys_slist to work */
sys_snode_t node;
/* llcp_mem_pool owner of this context */
struct llcp_mem_pool *owner;
/* PROC_ */
enum llcp_proc proc;
enum pdu_data_llctrl_type response_opcode;
/* Procedure FSM */
uint8_t state;
/* Expected opcode to be received next */
enum pdu_data_llctrl_type rx_opcode;
/* Last transmitted opcode used for unknown/reject */
enum pdu_data_llctrl_type tx_opcode;
/* Instant collision */
int collision;
#if defined(LLCP_TX_CTRL_BUF_QUEUE_ENABLE)
/* Wait list next pointer */
sys_snode_t wait_node;
/* Procedure wait reason */
enum llcp_wait_reason wait_reason;
#endif /* LLCP_TX_CTRL_BUF_QUEUE_ENABLE */
/* TX node awaiting ack */
struct node_tx *tx_ack;
/*
* This flag is set to 1 when we are finished with the control
* procedure and it is safe to release the context ctx
*/
int done;
/* Procedure data */
union {
/* Used by Minimum Used Channels Procedure */
#if defined(CONFIG_BT_CTLR_MIN_USED_CHAN)
struct {
uint8_t phys;
uint8_t min_used_chans;
} muc;
#endif /* CONFIG_BT_CTLR_MIN_USED_CHAN */
#if defined(CONFIG_BT_CTLR_LE_ENC)
/* Used by Encryption Procedure */
struct llcp_enc enc;
#endif /* CONFIG_BT_CTLR_LE_ENC */
#if defined(CONFIG_BT_CTLR_PHY)
/* PHY Update */
struct {
uint8_t tx:3;
uint8_t rx:3;
uint8_t flags:1;
uint8_t host_initiated:1;
uint8_t ntf_pu:1;
#if defined(CONFIG_BT_CTLR_DATA_LENGTH)
uint8_t ntf_dle:1;
#endif /* CONFIG_BT_CTLR_DATA_LENGTH */
uint8_t error;
uint16_t instant;
uint8_t c_to_p_phy;
uint8_t p_to_c_phy;
} pu;
#endif /* CONFIG_BT_CTLR_PHY */
/* Connection Update & Connection Parameter Request */
struct {
uint8_t error;
uint8_t params_changed;
uint16_t instant;
uint8_t win_size;
uint16_t win_offset_us;
uint16_t interval_min;
uint16_t interval_max;
uint16_t latency;
uint16_t timeout;
#if defined(CONFIG_BT_CTLR_CONN_PARAM_REQ)
uint8_t preferred_periodicity;
uint16_t reference_conn_event_count;
uint16_t offset0;
uint16_t offset1;
uint16_t offset2;
uint16_t offset3;
uint16_t offset4;
uint16_t offset5;
#endif /* defined(CONFIG_BT_CTLR_CONN_PARAM_REQ) */
} cu;
/* Use by ACL Termination Procedure */
struct {
uint8_t error_code;
} term;
/* Use by Channel Map Update Procedure */
struct {
uint16_t instant;
uint8_t chm[5];
} chmu;
#if defined(CONFIG_BT_CTLR_DF_CONN_CTE_REQ)
/* Use by CTE Request Procedure */
struct {
uint8_t type:2;
uint8_t min_len:5;
} cte_req;
struct llcp_df_cte_remote_rsp {
/* Storage for information that received LL_CTE_RSP PDU includes CTE */
uint8_t has_cte;
} cte_remote_rsp;
#endif /* CONFIG_BT_CTLR_DF_CONN_CTE_REQ */
#if defined(CONFIG_BT_CTLR_DF_CONN_CTE_RSP)
/* Use by CTE Response Procedure */
struct llcp_df_cte_remote_req {
uint8_t cte_type;
uint8_t min_cte_len;
} cte_remote_req;
#endif /* CONFIG_BT_CTLR_DF_CONN_CTE_RSP */
} data;
struct {
uint8_t type;
} unknown_response;
struct {
uint8_t reject_opcode;
uint8_t error_code;
} reject_ext_ind;
};
/* Procedure Incompatibility */
enum proc_incompat {
/* Local procedure has not sent first PDU */
INCOMPAT_NO_COLLISION,
/* Local incompatible procedure has sent first PDU */
INCOMPAT_RESOLVABLE,
/* Local incompatible procedure has received first PDU */
INCOMPAT_RESERVED,
};
/* Invalid LL Control PDU Opcode */
#define ULL_LLCP_INVALID_OPCODE (0xFFU)
static inline bool is_instant_passed(uint16_t instant, uint16_t event_count)
{
/*
* BLUETOOTH CORE SPECIFICATION Version 5.2 | Vol 6, Part B
* 5.5.1 ACL Control Procedures
* When a periph receives such a PDU where (Instant connEventCount) modulo
* 65536 is less than 32767 and Instant is not equal to connEventCount, the periph
* shall listen to all the connection events until it has confirmation that the central
* has received its acknowledgment of the PDU or connEventCount equals
* Instant.
*
* x % 2^n == x & (2^n - 1)
*
* 65535 = 2^16 - 1
* 65536 = 2^16
*/
return ((instant - event_count) & 0xFFFFU) > 0x7FFFU;
}
static inline bool is_instant_not_passed(uint16_t instant, uint16_t event_count)
{
/*
* BLUETOOTH CORE SPECIFICATION Version 5.2 | Vol 6, Part B
* 5.5.1 ACL Control Procedures
* When a periph receives such a PDU where (Instant connEventCount) modulo
* 65536 is less than 32767 and Instant is not equal to connEventCount, the periph
* shall listen to all the connection events until it has confirmation that the central
* has received its acknowledgment of the PDU or connEventCount equals
* Instant.
*
* x % 2^n == x & (2^n - 1)
*
* 65535 = 2^16 - 1
* 65536 = 2^16
*/
return ((instant - event_count) & 0xFFFFU) < 0x7FFFU;
}
static inline bool is_instant_reached_or_passed(uint16_t instant, uint16_t event_count)
{
/*
* BLUETOOTH CORE SPECIFICATION Version 5.2 | Vol 6, Part B
* 5.5.1 ACL Control Procedures
* When a periph receives such a PDU where (Instant connEventCount) modulo
* 65536 is less than 32767 and Instant is not equal to connEventCount, the periph
* shall listen to all the connection events until it has confirmation that the central
* has received its acknowledgment of the PDU or connEventCount equals
* Instant.
*
* x % 2^n == x & (2^n - 1)
*
* 65535 = 2^16 - 1
* 65536 = 2^16
*/
return ((event_count - instant) & 0xFFFFU) <= 0x7FFFU;
}
/*
* LLCP Resource Management
*/
bool llcp_ntf_alloc_is_available(void);
bool llcp_ntf_alloc_num_available(uint8_t count);
struct node_rx_pdu *llcp_ntf_alloc(void);
struct proc_ctx *llcp_create_local_procedure(enum llcp_proc proc);
struct proc_ctx *llcp_create_remote_procedure(enum llcp_proc proc);
bool llcp_tx_alloc_peek(struct ll_conn *conn, struct proc_ctx *ctx);
void llcp_tx_alloc_unpeek(struct proc_ctx *ctx);
struct node_tx *llcp_tx_alloc(struct ll_conn *conn, struct proc_ctx *ctx);
void llcp_proc_ctx_release(struct proc_ctx *ctx);
/*
* ULL -> LLL Interface
*/
void llcp_tx_enqueue(struct ll_conn *conn, struct node_tx *tx);
void llcp_tx_pause_data(struct ll_conn *conn, enum llcp_tx_q_pause_data_mask pause_mask);
void llcp_tx_resume_data(struct ll_conn *conn, enum llcp_tx_q_pause_data_mask resume_mask);
void llcp_tx_flush(struct ll_conn *conn);
/*
* LLCP Procedure Response Timeout
*/
void llcp_lr_prt_restart(struct ll_conn *conn);
void llcp_lr_prt_stop(struct ll_conn *conn);
void llcp_rr_prt_restart(struct ll_conn *conn);
void llcp_rr_prt_stop(struct ll_conn *conn);
/*
* LLCP Local Procedure Common
*/
void llcp_lp_comm_tx_ack(struct ll_conn *conn, struct proc_ctx *ctx, struct node_tx *tx);
void llcp_lp_comm_rx(struct ll_conn *conn, struct proc_ctx *ctx, struct node_rx_pdu *rx);
void llcp_lp_comm_init_proc(struct proc_ctx *ctx);
void llcp_lp_comm_run(struct ll_conn *conn, struct proc_ctx *ctx, void *param);
/*
* LLCP Remote Procedure Common
*/
void llcp_rp_comm_tx_ack(struct ll_conn *conn, struct proc_ctx *ctx, struct node_tx *tx);
void llcp_rp_comm_rx(struct ll_conn *conn, struct proc_ctx *ctx, struct node_rx_pdu *rx);
void llcp_rp_comm_init_proc(struct proc_ctx *ctx);
void llcp_rp_comm_run(struct ll_conn *conn, struct proc_ctx *ctx, void *param);
#if defined(CONFIG_BT_CTLR_LE_ENC)
/*
* LLCP Local Procedure Encryption
*/
void llcp_lp_enc_rx(struct ll_conn *conn, struct proc_ctx *ctx, struct node_rx_pdu *rx);
void llcp_lp_enc_init_proc(struct proc_ctx *ctx);
void llcp_lp_enc_run(struct ll_conn *conn, struct proc_ctx *ctx, void *param);
/*
* LLCP Remote Procedure Encryption
*/
void llcp_rp_enc_rx(struct ll_conn *conn, struct proc_ctx *ctx, struct node_rx_pdu *rx);
void llcp_rp_enc_init_proc(struct proc_ctx *ctx);
void llcp_rp_enc_ltk_req_reply(struct ll_conn *conn, struct proc_ctx *ctx);
void llcp_rp_enc_ltk_req_neg_reply(struct ll_conn *conn, struct proc_ctx *ctx);
bool llcp_rp_enc_ltk_req_reply_allowed(struct ll_conn *conn, struct proc_ctx *ctx);
void llcp_rp_enc_run(struct ll_conn *conn, struct proc_ctx *ctx, void *param);
#endif /* CONFIG_BT_CTLR_LE_ENC */
#if defined(CONFIG_BT_CTLR_PHY)
/*
* LLCP Local Procedure PHY Update
*/
void llcp_lp_pu_rx(struct ll_conn *conn, struct proc_ctx *ctx, struct node_rx_pdu *rx);
void llcp_lp_pu_init_proc(struct proc_ctx *ctx);
void llcp_lp_pu_run(struct ll_conn *conn, struct proc_ctx *ctx, void *param);
void llcp_lp_pu_tx_ack(struct ll_conn *conn, struct proc_ctx *ctx, void *param);
#endif /* CONFIG_BT_CTLR_PHY */
/*
* LLCP Local Procedure Connection Update
*/
void llcp_lp_cu_rx(struct ll_conn *conn, struct proc_ctx *ctx, struct node_rx_pdu *rx);
void llcp_lp_cu_init_proc(struct proc_ctx *ctx);
void llcp_lp_cu_run(struct ll_conn *conn, struct proc_ctx *ctx, void *param);
/*
* LLCP Local Channel Map Update
*/
void llcp_lp_chmu_rx(struct ll_conn *conn, struct proc_ctx *ctx, struct node_rx_pdu *rx);
void llcp_lp_chmu_init_proc(struct proc_ctx *ctx);
void llcp_lp_chmu_run(struct ll_conn *conn, struct proc_ctx *ctx, void *param);
#if defined(CONFIG_BT_CTLR_PHY)
/*
* LLCP Remote Procedure PHY Update
*/
void llcp_rp_pu_rx(struct ll_conn *conn, struct proc_ctx *ctx, struct node_rx_pdu *rx);
void llcp_rp_pu_init_proc(struct proc_ctx *ctx);
void llcp_rp_pu_run(struct ll_conn *conn, struct proc_ctx *ctx, void *param);
void llcp_rp_pu_tx_ack(struct ll_conn *conn, struct proc_ctx *ctx, void *param);
#endif /* CONFIG_BT_CTLR_PHY */
/*
* LLCP Remote Procedure Connection Update
*/
void llcp_rp_cu_rx(struct ll_conn *conn, struct proc_ctx *ctx, struct node_rx_pdu *rx);
void llcp_rp_cu_init_proc(struct proc_ctx *ctx);
void llcp_rp_cu_run(struct ll_conn *conn, struct proc_ctx *ctx, void *param);
void llcp_rp_conn_param_req_reply(struct ll_conn *conn, struct proc_ctx *ctx);
void llcp_rp_conn_param_req_neg_reply(struct ll_conn *conn, struct proc_ctx *ctx);
/*
* Terminate Helper
*/
void llcp_pdu_encode_terminate_ind(struct proc_ctx *ctx, struct pdu_data *pdu);
void llcp_ntf_encode_terminate_ind(struct proc_ctx *ctx, struct pdu_data *pdu);
void llcp_pdu_decode_terminate_ind(struct proc_ctx *ctx, struct pdu_data *pdu);
/*
* LLCP Local Request
*/
struct proc_ctx *llcp_lr_peek(struct ll_conn *conn);
bool llcp_lr_ispaused(struct ll_conn *conn);
void llcp_lr_pause(struct ll_conn *conn);
void llcp_lr_resume(struct ll_conn *conn);
void llcp_lr_tx_ack(struct ll_conn *conn, struct proc_ctx *ctx, struct node_tx *tx);
void llcp_lr_rx(struct ll_conn *conn, struct proc_ctx *ctx, struct node_rx_pdu *rx);
void llcp_lr_enqueue(struct ll_conn *conn, struct proc_ctx *ctx);
void llcp_lr_init(struct ll_conn *conn);
void llcp_lr_run(struct ll_conn *conn);
void llcp_lr_complete(struct ll_conn *conn);
void llcp_lr_connect(struct ll_conn *conn);
void llcp_lr_disconnect(struct ll_conn *conn);
void llcp_lr_abort(struct ll_conn *conn);
/*
* LLCP Remote Request
*/
void llcp_rr_set_incompat(struct ll_conn *conn, enum proc_incompat incompat);
bool llcp_rr_get_collision(struct ll_conn *conn);
void llcp_rr_set_paused_cmd(struct ll_conn *conn, enum llcp_proc);
enum llcp_proc llcp_rr_get_paused_cmd(struct ll_conn *conn);
struct proc_ctx *llcp_rr_peek(struct ll_conn *conn);
bool llcp_rr_ispaused(struct ll_conn *conn);
void llcp_rr_pause(struct ll_conn *conn);
void llcp_rr_resume(struct ll_conn *conn);
void llcp_rr_tx_ack(struct ll_conn *conn, struct proc_ctx *ctx, struct node_tx *tx);
void llcp_rr_rx(struct ll_conn *conn, struct proc_ctx *ctx, struct node_rx_pdu *rx);
void llcp_rr_init(struct ll_conn *conn);
void llcp_rr_prepare(struct ll_conn *conn, struct node_rx_pdu *rx);
void llcp_rr_run(struct ll_conn *conn);
void llcp_rr_complete(struct ll_conn *conn);
void llcp_rr_connect(struct ll_conn *conn);
void llcp_rr_disconnect(struct ll_conn *conn);
void llcp_rr_new(struct ll_conn *conn, struct node_rx_pdu *rx);
#if defined(CONFIG_BT_CTLR_LE_PING)
/*
* LE Ping Procedure Helper
*/
void llcp_pdu_encode_ping_req(struct pdu_data *pdu);
void llcp_pdu_encode_ping_rsp(struct pdu_data *pdu);
#endif /* CONFIG_BT_CTLR_LE_PING */
/*
* Unknown response helper
*/
void llcp_pdu_encode_unknown_rsp(struct proc_ctx *ctx,
struct pdu_data *pdu);
void llcp_pdu_decode_unknown_rsp(struct proc_ctx *ctx,
struct pdu_data *pdu);
void llcp_ntf_encode_unknown_rsp(struct proc_ctx *ctx,
struct pdu_data *pdu);
/*
* Feature Exchange Procedure Helper
*/
void llcp_pdu_encode_feature_req(struct ll_conn *conn,
struct pdu_data *pdu);
void llcp_pdu_encode_feature_rsp(struct ll_conn *conn,
struct pdu_data *pdu);
void llcp_ntf_encode_feature_rsp(struct ll_conn *conn,
struct pdu_data *pdu);
void llcp_ntf_encode_feature_req(struct ll_conn *conn,
struct pdu_data *pdu);
void llcp_pdu_decode_feature_req(struct ll_conn *conn,
struct pdu_data *pdu);
void llcp_pdu_decode_feature_rsp(struct ll_conn *conn,
struct pdu_data *pdu);
#if defined(CONFIG_BT_CTLR_MIN_USED_CHAN)
/*
* Minimum number of used channels Procedure Helper
*/
#if defined(CONFIG_BT_PERIPHERAL)
void llcp_pdu_encode_min_used_chans_ind(struct proc_ctx *ctx, struct pdu_data *pdu);
#endif /* CONFIG_BT_PERIPHERAL */
#if defined(CONFIG_BT_CENTRAL)
void llcp_pdu_decode_min_used_chans_ind(struct ll_conn *conn, struct pdu_data *pdu);
#endif /* CONFIG_BT_CENTRAL */
#endif /* CONFIG_BT_CTLR_MIN_USED_CHAN */
/*
* Version Exchange Procedure Helper
*/
void llcp_pdu_encode_version_ind(struct pdu_data *pdu);
void llcp_ntf_encode_version_ind(struct ll_conn *conn, struct pdu_data *pdu);
void llcp_pdu_decode_version_ind(struct ll_conn *conn, struct pdu_data *pdu);
#if defined(CONFIG_BT_CTLR_LE_ENC)
/*
* Encryption Start Procedure Helper
*/
#if defined(CONFIG_BT_CENTRAL)
void llcp_pdu_encode_enc_req(struct proc_ctx *ctx, struct pdu_data *pdu);
#endif /* CONFIG_BT_CENTRAL */
#if defined(CONFIG_BT_PERIPHERAL)
void llcp_ntf_encode_enc_req(struct proc_ctx *ctx, struct pdu_data *pdu);
void llcp_pdu_encode_enc_rsp(struct pdu_data *pdu);
void llcp_pdu_encode_start_enc_req(struct pdu_data *pdu);
#endif /* CONFIG_BT_PERIPHERAL */
void llcp_pdu_encode_start_enc_rsp(struct pdu_data *pdu);
#if defined(CONFIG_BT_CENTRAL)
void llcp_pdu_encode_pause_enc_req(struct pdu_data *pdu);
#endif /* CONFIG_BT_CENTRAL */
void llcp_pdu_encode_pause_enc_rsp(struct pdu_data *pdu);
#endif /* CONFIG_BT_CTLR_LE_ENC */
void llcp_pdu_encode_reject_ind(struct pdu_data *pdu, uint8_t error_code);
void llcp_pdu_encode_reject_ext_ind(struct pdu_data *pdu, uint8_t reject_opcode,
uint8_t error_code);
void llcp_pdu_decode_reject_ext_ind(struct proc_ctx *ctx, struct pdu_data *pdu);
void llcp_ntf_encode_reject_ext_ind(struct proc_ctx *ctx, struct pdu_data *pdu);
/*
* PHY Update Procedure Helper
*/
void llcp_pdu_encode_phy_req(struct proc_ctx *ctx, struct pdu_data *pdu);
void llcp_pdu_decode_phy_req(struct proc_ctx *ctx, struct pdu_data *pdu);
#if defined(CONFIG_BT_PERIPHERAL)
void llcp_pdu_encode_phy_rsp(struct ll_conn *conn, struct pdu_data *pdu);
void llcp_pdu_decode_phy_update_ind(struct proc_ctx *ctx, struct pdu_data *pdu);
#endif /* CONFIG_BT_PERIPHERAL */
#if defined(CONFIG_BT_CENTRAL)
void llcp_pdu_encode_phy_update_ind(struct proc_ctx *ctx, struct pdu_data *pdu);
void llcp_pdu_decode_phy_rsp(struct proc_ctx *ctx, struct pdu_data *pdu);
#endif /* CONFIG_BT_CENTRAL */
/*
* Connection Update Procedure Helper
*/
void llcp_pdu_encode_conn_param_req(struct proc_ctx *ctx, struct pdu_data *pdu);
void llcp_pdu_decode_conn_param_req(struct proc_ctx *ctx, struct pdu_data *pdu);
void llcp_pdu_encode_conn_param_rsp(struct proc_ctx *ctx, struct pdu_data *pdu);
void llcp_pdu_decode_conn_param_rsp(struct proc_ctx *ctx, struct pdu_data *pdu);
void llcp_pdu_encode_conn_update_ind(struct proc_ctx *ctx, struct pdu_data *pdu);
void llcp_pdu_decode_conn_update_ind(struct proc_ctx *ctx, struct pdu_data *pdu);
/*
* Remote Channel Map Update Procedure Helper
*/
void llcp_pdu_encode_chan_map_update_ind(struct proc_ctx *ctx, struct pdu_data *pdu);
void llcp_pdu_decode_chan_map_update_ind(struct proc_ctx *ctx, struct pdu_data *pdu);
void llcp_rp_chmu_rx(struct ll_conn *conn, struct proc_ctx *ctx, struct node_rx_pdu *rx);
void llcp_rp_chmu_init_proc(struct proc_ctx *ctx);
void llcp_rp_chmu_run(struct ll_conn *conn, struct proc_ctx *ctx, void *param);
#if defined(CONFIG_BT_CTLR_DATA_LENGTH)
/*
* Data Length Update Procedure Helper
*/
void llcp_pdu_encode_length_req(struct ll_conn *conn, struct pdu_data *pdu);
void llcp_pdu_encode_length_rsp(struct ll_conn *conn, struct pdu_data *pdu);
void llcp_pdu_decode_length_req(struct ll_conn *conn, struct pdu_data *pdu);
void llcp_pdu_decode_length_rsp(struct ll_conn *conn, struct pdu_data *pdu);
void llcp_ntf_encode_length_change(struct ll_conn *conn,
struct pdu_data *pdu);
#endif /* CONFIG_BT_CTLR_DATA_LENGTH */
#if defined(CONFIG_BT_CTLR_DF_CONN_CTE_REQ)
/*
* Constant Tone Request Procedure Helper
*/
void llcp_pdu_encode_cte_req(struct proc_ctx *ctx, struct pdu_data *pdu);
void llcp_pdu_decode_cte_rsp(struct proc_ctx *ctx, const struct pdu_data *pdu);
void llcp_ntf_encode_cte_req(struct pdu_data *pdu);
#endif /* CONFIG_BT_CTLR_DF_CONN_CTE_REQ */
#if defined(CONFIG_BT_CTLR_DF_CONN_CTE_RSP)
/*
* Constant Tone Response Procedure Helper
*/
void llcp_pdu_decode_cte_req(struct proc_ctx *ctx, struct pdu_data *pdu);
void llcp_pdu_encode_cte_rsp(const struct proc_ctx *ctx, struct pdu_data *pdu);
#endif /* CONFIG_BT_CTLR_DF_CONN_CTE_RSP */
#ifdef ZTEST_UNITTEST
bool lr_is_disconnected(struct ll_conn *conn);
bool lr_is_idle(struct ll_conn *conn);
bool rr_is_disconnected(struct ll_conn *conn);
bool rr_is_idle(struct ll_conn *conn);
uint16_t ctx_buffers_free(void);
#endif