/*
* Copyright (c) 2016 Nordic Semiconductor ASA
* Copyright (c) 2016 Vinayak Kariappa Chettimada
*
* SPDX-License-Identifier: Apache-2.0
*/
enum llcp {
LLCP_NONE,
LLCP_CONN_UPD,
LLCP_CHAN_MAP,
#if defined(CONFIG_BT_CTLR_LE_ENC)
LLCP_ENCRYPTION,
#endif /* CONFIG_BT_CTLR_LE_ENC */
LLCP_FEATURE_EXCHANGE,
LLCP_VERSION_EXCHANGE,
/* LLCP_TERMINATE, */
LLCP_CONNECTION_PARAM_REQ,
#if defined(CONFIG_BT_CTLR_LE_PING)
LLCP_PING,
#endif /* CONFIG_BT_CTLR_LE_PING */
#if defined(CONFIG_BT_CTLR_PHY)
LLCP_PHY_UPD,
#endif /* CONFIG_BT_CTLR_PHY */
};
struct shdr {
u32_t ticks_xtal_to_start;
u32_t ticks_active_to_start;
u32_t ticks_preempt_to_start;
u32_t ticks_slot;
};
struct connection {
struct shdr hdr;
u8_t access_addr[4];
u8_t crc_init[3];
u8_t data_chan_map[5];
u8_t chm_update;
u8_t data_chan_count:6;
u8_t data_chan_sel:1;
u8_t role:1;
union {
struct {
u8_t data_chan_hop;
u8_t data_chan_use;
};
u16_t data_chan_id;
};
u16_t handle;
u16_t event_counter;
u16_t conn_interval;
u16_t latency;
u16_t latency_prepare;
u16_t latency_event;
#if defined(CONFIG_BT_CTLR_DATA_LENGTH)
u16_t default_tx_octets;
u16_t max_tx_octets;
u16_t max_rx_octets;
#if defined(CONFIG_BT_CTLR_PHY)
u16_t default_tx_time;
u16_t max_tx_time;
u16_t max_rx_time;
#endif /* CONFIG_BT_CTLR_PHY */
#endif /* CONFIG_BT_CTLR_DATA_LENGTH */
#if defined(CONFIG_BT_CTLR_PHY)
u8_t phy_pref_tx:3;
u8_t phy_tx:3;
u8_t phy_pref_flags:1;
u8_t phy_flags:1;
u8_t phy_tx_time:3;
u8_t phy_pref_rx:3;
u8_t phy_rx:3;
#endif /* CONFIG_BT_CTLR_PHY */
u16_t connect_expire;
u16_t supervision_reload;
u16_t supervision_expire;
u16_t procedure_reload;
u16_t procedure_expire;
#if defined(CONFIG_BT_CTLR_LE_PING)
u16_t appto_reload;
u16_t appto_expire;
u16_t apto_reload;
u16_t apto_expire;
#endif /* CONFIG_BT_CTLR_LE_PING */
union {
struct {
u8_t reserved:5;
u8_t fex_valid:1;
} common;
struct {
u8_t terminate_ack:1;
u8_t rfu:4;
u8_t fex_valid:1;
} master;
struct {
u8_t latency_enabled:1;
u8_t latency_cancel:1;
u8_t sca:3;
u8_t fex_valid:1;
u32_t window_widening_periodic_us;
u32_t window_widening_max_us;
u32_t window_widening_prepare_us;
u32_t window_widening_event_us;
u32_t window_size_prepare_us;
u32_t window_size_event_us;
u32_t force;
u32_t ticks_to_offset;
} slave;
};
u8_t llcp_req;
u8_t llcp_ack;
enum llcp llcp_type;
union {
struct {
enum {
LLCP_CUI_STATE_INPROG,
LLCP_CUI_STATE_USE,
LLCP_CUI_STATE_SELECT
} state:2 __packed;
u8_t is_internal:1;
u16_t interval;
u16_t latency;
u16_t timeout;
u16_t instant;
u32_t win_offset_us;
u8_t win_size;
u16_t *pdu_win_offset;
u32_t ticks_anchor;
} conn_upd;
struct {
u8_t initiate;
u8_t chm[5];
u16_t instant;
} chan_map;
#if defined(CONFIG_BT_CTLR_PHY)
struct {
u8_t initiate:1;
u8_t cmd:1;
u8_t tx:3;
u8_t rx:3;
u16_t instant;
} phy_upd_ind;
#endif /* CONFIG_BT_CTLR_PHY */
struct {
u8_t initiate;
u8_t error_code;
u8_t rand[8];
u8_t ediv[2];
u8_t ltk[16];
u8_t skd[16];
} encryption;
} llcp;
u32_t llcp_features;
struct {
u8_t tx:1;
u8_t rx:1;
u8_t version_number;
u16_t company_id;
u16_t sub_version_number;
} llcp_version;
struct {
u8_t req;
u8_t ack;
u8_t reason_own;
u8_t reason_peer;
struct {
struct radio_pdu_node_rx_hdr hdr;
u8_t reason;
} radio_pdu_node_rx;
} llcp_terminate;
#if defined(CONFIG_BT_CTLR_CONN_PARAM_REQ)
struct {
u8_t req;
u8_t ack;
enum {
LLCP_CPR_STATE_REQ,
LLCP_CPR_STATE_RSP,
LLCP_CPR_STATE_APP_REQ,
LLCP_CPR_STATE_APP_WAIT,
LLCP_CPR_STATE_RSP_WAIT,
LLCP_CPR_STATE_UPD
} state:3 __packed;
u8_t cmd:1;
u8_t status;
u16_t interval;
u16_t latency;
u16_t timeout;
u8_t preferred_periodicity;
u16_t reference_conn_event_count;
u16_t offset0;
u16_t offset1;
u16_t offset2;
u16_t offset3;
u16_t offset4;
u16_t offset5;
u16_t *pdu_win_offset0;
u32_t ticks_ref;
u32_t ticks_to_offset_next;
} llcp_conn_param;
#endif /* CONFIG_BT_CTLR_CONN_PARAM_REQ */
#if defined(CONFIG_BT_CTLR_DATA_LENGTH)
struct {
u8_t req;
u8_t ack;
u8_t state:2;
#define LLCP_LENGTH_STATE_REQ 0
#define LLCP_LENGTH_STATE_ACK_WAIT 1
#define LLCP_LENGTH_STATE_RSP_WAIT 2
#define LLCP_LENGTH_STATE_RESIZE 3
u16_t rx_octets;
u16_t tx_octets;
#if defined(CONFIG_BT_CTLR_PHY)
u16_t rx_time;
u16_t tx_time;
#endif /* CONFIG_BT_CTLR_PHY */
} llcp_length;
#endif /* CONFIG_BT_CTLR_DATA_LENGTH */
#if defined(CONFIG_BT_CTLR_PHY)
struct {
u8_t req;
u8_t ack;
u8_t state:2;
#define LLCP_PHY_STATE_REQ 0
#define LLCP_PHY_STATE_ACK_WAIT 1
#define LLCP_PHY_STATE_RSP_WAIT 2
#define LLCP_PHY_STATE_UPD 3
u8_t tx:3;
u8_t rx:3;
u8_t flags:1;
u8_t cmd:1;
} llcp_phy;
#endif /* CONFIG_BT_CTLR_PHY */
u8_t sn:1;
u8_t nesn:1;
u8_t pause_rx:1;
u8_t pause_tx:1;
u8_t enc_rx:1;
u8_t enc_tx:1;
u8_t refresh:1;
u8_t empty:1;
struct ccm ccm_rx;
struct ccm ccm_tx;
struct radio_pdu_node_tx *pkt_tx_head;
struct radio_pdu_node_tx *pkt_tx_ctrl;
struct radio_pdu_node_tx *pkt_tx_ctrl_last;
struct radio_pdu_node_tx *pkt_tx_data;
struct radio_pdu_node_tx *pkt_tx_last;
u8_t packet_tx_head_len;
u8_t packet_tx_head_offset;
#if defined(CONFIG_BT_CTLR_CONN_RSSI)
u8_t rssi_latest;
u8_t rssi_reported;
u8_t rssi_sample_count;
#endif /* CONFIG_BT_CTLR_CONN_RSSI */
};
#define CONNECTION_T_SIZE MROUND(sizeof(struct connection))
struct pdu_data_q_tx {
u16_t handle;
struct radio_pdu_node_tx *node_tx;
};
/* Extra bytes for enqueued rx_node metadata: rssi (always) and resolving
* index and directed adv report (with privacy or extended scanner filter
* policies enabled).
* Note: to simplify the code, both bytes are allocated even if only one of
* the options is selected.
*/
#if defined(CONFIG_BT_CTLR_PRIVACY) || defined(CONFIG_BT_CTLR_EXT_SCAN_FP)
#define PDU_AC_SIZE_EXTRA 3
#else
#define PDU_AC_SIZE_EXTRA 1
#endif /* CONFIG_BT_CTLR_PRIVACY */
/* Minimum Rx Data allocation size */
#define PACKET_RX_DATA_SIZE_MIN \
MROUND(offsetof(struct radio_pdu_node_rx, pdu_data) + \
(PDU_AC_SIZE_MAX + PDU_AC_SIZE_EXTRA))
/* Minimum Tx Ctrl allocation size */
#define PACKET_TX_CTRL_SIZE_MIN \
MROUND(offsetof(struct radio_pdu_node_tx, pdu_data) + \
offsetof(struct pdu_data, payload) + 27)
/** @todo fix starvation when ctrl rx in radio ISR
* for multiple connections needs to tx back to peer.
*/
#define PACKET_MEM_COUNT_TX_CTRL 2
#define LL_MEM_CONN (sizeof(struct connection) * RADIO_CONNECTION_CONTEXT_MAX)
#define LL_MEM_RXQ (sizeof(void *) * (RADIO_PACKET_COUNT_RX_MAX + 4))
#define LL_MEM_TXQ (sizeof(struct pdu_data_q_tx) * \
(RADIO_PACKET_COUNT_TX_MAX + 2))
#define LL_MEM_RX_POOL_SZ (MROUND(offsetof(struct radio_pdu_node_rx,\
pdu_data) + ((\
(PDU_AC_SIZE_MAX + PDU_AC_SIZE_EXTRA) < \
(offsetof(struct pdu_data, payload) + \
RADIO_LL_LENGTH_OCTETS_RX_MAX)) ? \
(offsetof(struct pdu_data, payload) + \
RADIO_LL_LENGTH_OCTETS_RX_MAX) \
: \
(PDU_AC_SIZE_MAX + PDU_AC_SIZE_EXTRA))) * \
(RADIO_PACKET_COUNT_RX_MAX + 3))
#define LL_MEM_RX_LINK_POOL (sizeof(void *) * 2 * ((RADIO_PACKET_COUNT_RX_MAX +\
4) + RADIO_CONNECTION_CONTEXT_MAX))
#define LL_MEM_TX_CTRL_POOL (PACKET_TX_CTRL_SIZE_MIN * PACKET_MEM_COUNT_TX_CTRL)
#define LL_MEM_TX_DATA_POOL ((MROUND(offsetof( \
struct radio_pdu_node_tx, pdu_data) + \
offsetof(struct pdu_data, payload) + \
RADIO_PACKET_TX_DATA_SIZE)) \
* (RADIO_PACKET_COUNT_TX_MAX + 1))
#define LL_MEM_TOTAL (LL_MEM_CONN + LL_MEM_RXQ + (LL_MEM_TXQ * 2) + \
LL_MEM_RX_POOL_SZ + \
LL_MEM_RX_LINK_POOL + LL_MEM_TX_CTRL_POOL + LL_MEM_TX_DATA_POOL)