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ble_gap.c
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ble_gap.c
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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
#include <assert.h>
#include <string.h>
#include <errno.h>
#include "nimble/nimble_opt.h"
#include "host/ble_hs_adv.h"
#include "host/ble_hs_hci.h"
#include "ble_hs_priv.h"
#include "ble_hs_resolv_priv.h"
#if MYNEWT
#include "bsp/bsp.h"
#else
#define bssnz_t
#endif
/**
* GAP - Generic Access Profile.
*
* Design overview:
*
* GAP procedures are initiated by the application via function calls. Such
* functions return when either of the following happens:
*
* (1) The procedure completes (success or failure).
* (2) The procedure cannot proceed until a BLE peer responds.
*
* For (1), the result of the procedure if fully indicated by the function
* return code.
* For (2), the procedure result is indicated by an application-configured
* callback. The callback is executed when the procedure completes.
*
* The GAP is always in one of two states:
* 1. Free
* 2. Preempted
*
* While GAP is in the free state, new procedures can be started at will.
* While GAP is in the preempted state, no new procedures are allowed. The
* host sets GAP to the preempted state when it needs to ensure no ongoing
* procedures, a condition required for some HCI commands to succeed. The host
* must take care to take GAP out of the preempted state as soon as possible.
*
* Notes on thread-safety:
* 1. The ble_hs mutex must always be unlocked when an application callback is
* executed. The purpose of this requirement is to allow callbacks to
* initiate additional host procedures, which may require locking of the
* mutex.
* 2. Functions called directly by the application never call callbacks.
* Generally, these functions lock the ble_hs mutex at the start, and only
* unlock it at return.
* 3. Functions which do call callbacks (receive handlers and timer
* expirations) generally only lock the mutex long enough to modify
* affected state and make copies of data needed for the callback. A copy
* of various pieces of data is called a "snapshot" (struct
* ble_gap_snapshot). The sole purpose of snapshots is to allow callbacks
* to be executed after unlocking the mutex.
*/
/** GAP procedure op codes. */
#define BLE_GAP_OP_NULL 0
#define BLE_GAP_OP_M_DISC 1
#define BLE_GAP_OP_M_CONN 2
#define BLE_GAP_OP_S_ADV 1
#define BLE_GAP_OP_S_PERIODIC_ADV 2
#define BLE_GAP_OP_SYNC 1
/**
* If an attempt to cancel an active procedure fails, the attempt is retried
* at this rate (ms).
*/
#define BLE_GAP_CANCEL_RETRY_TIMEOUT_MS 100 /* ms */
#define BLE_GAP_UPDATE_TIMEOUT_MS 40000 /* ms */
static const struct ble_gap_conn_params ble_gap_conn_params_dflt = {
.scan_itvl = 0x0010,
.scan_window = 0x0010,
.itvl_min = BLE_GAP_INITIAL_CONN_ITVL_MIN,
.itvl_max = BLE_GAP_INITIAL_CONN_ITVL_MAX,
.latency = BLE_GAP_INITIAL_CONN_LATENCY,
.supervision_timeout = BLE_GAP_INITIAL_SUPERVISION_TIMEOUT,
.min_ce_len = BLE_GAP_INITIAL_CONN_MIN_CE_LEN,
.max_ce_len = BLE_GAP_INITIAL_CONN_MAX_CE_LEN,
};
/**
* The state of the in-progress master connection. If no master connection is
* currently in progress, then the op field is set to BLE_GAP_OP_NULL.
*/
struct ble_gap_master_state {
uint8_t op;
uint8_t exp_set:1;
ble_npl_time_t exp_os_ticks;
ble_gap_event_fn *cb;
void *cb_arg;
/**
* Indicates the type of master procedure that was preempted, or
* BLE_GAP_OP_NULL if no procedure was preempted.
*/
uint8_t preempted_op;
union {
struct {
uint8_t using_wl:1;
uint8_t our_addr_type:2;
uint8_t cancel:1;
} conn;
struct {
uint8_t limited:1;
} disc;
};
};
static bssnz_t struct ble_gap_master_state ble_gap_master;
#if MYNEWT_VAL(BLE_PERIODIC_ADV)
/**
* The state of the in-progress sync creation. If no sync creation connection is
* currently in progress, then the op field is set to BLE_GAP_OP_NULL.
*/
struct ble_gap_sync_state {
uint8_t op;
struct ble_hs_periodic_sync *psync;
ble_gap_event_fn *cb;
void *cb_arg;
};
static bssnz_t struct ble_gap_sync_state ble_gap_sync;
#endif
/**
* The state of the in-progress slave connection. If no slave connection is
* currently in progress, then the op field is set to BLE_GAP_OP_NULL.
*/
struct ble_gap_slave_state {
uint8_t op;
unsigned int our_addr_type:2;
unsigned int preempted:1; /** Set to 1 if advertising was preempted. */
unsigned int connectable:1;
#if MYNEWT_VAL(BLE_EXT_ADV)
unsigned int configured:1; /** If instance is configured */
unsigned int scannable:1;
unsigned int directed:1;
unsigned int legacy_pdu:1;
unsigned int rnd_addr_set:1;
#if MYNEWT_VAL(BLE_PERIODIC_ADV)
unsigned int periodic_configured:1;
uint8_t periodic_op;
#endif
uint8_t rnd_addr[6];
#else
/* timer is used only with legacy advertising */
unsigned int exp_set:1;
ble_npl_time_t exp_os_ticks;
#endif
ble_gap_event_fn *cb;
void *cb_arg;
};
static bssnz_t struct ble_gap_slave_state ble_gap_slave[BLE_ADV_INSTANCES];
struct ble_gap_update_entry {
SLIST_ENTRY(ble_gap_update_entry) next;
struct ble_gap_upd_params params;
ble_npl_time_t exp_os_ticks;
uint16_t conn_handle;
};
SLIST_HEAD(ble_gap_update_entry_list, ble_gap_update_entry);
struct ble_gap_snapshot {
struct ble_gap_conn_desc *desc;
ble_gap_event_fn *cb;
void *cb_arg;
};
static SLIST_HEAD(ble_gap_hook_list, ble_gap_event_listener) ble_gap_event_listener_list;
static os_membuf_t ble_gap_update_entry_mem[
OS_MEMPOOL_SIZE(MYNEWT_VAL(BLE_GAP_MAX_PENDING_CONN_PARAM_UPDATE),
sizeof (struct ble_gap_update_entry))];
static struct os_mempool ble_gap_update_entry_pool;
static struct ble_gap_update_entry_list ble_gap_update_entries;
static void ble_gap_update_entry_free(struct ble_gap_update_entry *entry);
static struct ble_gap_update_entry *
ble_gap_update_entry_find(uint16_t conn_handle,
struct ble_gap_update_entry **out_prev);
static struct ble_gap_update_entry *
ble_gap_update_entry_remove(uint16_t conn_handle);
static void
ble_gap_update_l2cap_cb(uint16_t conn_handle, int status, void *arg);
static int ble_gap_adv_enable_tx(int enable);
static int ble_gap_conn_cancel_tx(void);
#if NIMBLE_BLE_SCAN && !MYNEWT_VAL(BLE_EXT_ADV)
static int ble_gap_disc_enable_tx(int enable, int filter_duplicates);
#endif
STATS_SECT_DECL(ble_gap_stats) ble_gap_stats;
STATS_NAME_START(ble_gap_stats)
STATS_NAME(ble_gap_stats, wl_set)
STATS_NAME(ble_gap_stats, wl_set_fail)
STATS_NAME(ble_gap_stats, adv_stop)
STATS_NAME(ble_gap_stats, adv_stop_fail)
STATS_NAME(ble_gap_stats, adv_start)
STATS_NAME(ble_gap_stats, adv_start_fail)
STATS_NAME(ble_gap_stats, adv_set_data)
STATS_NAME(ble_gap_stats, adv_set_data_fail)
STATS_NAME(ble_gap_stats, adv_rsp_set_data)
STATS_NAME(ble_gap_stats, adv_rsp_set_data_fail)
STATS_NAME(ble_gap_stats, discover)
STATS_NAME(ble_gap_stats, discover_fail)
STATS_NAME(ble_gap_stats, initiate)
STATS_NAME(ble_gap_stats, initiate_fail)
STATS_NAME(ble_gap_stats, terminate)
STATS_NAME(ble_gap_stats, terminate_fail)
STATS_NAME(ble_gap_stats, cancel)
STATS_NAME(ble_gap_stats, cancel_fail)
STATS_NAME(ble_gap_stats, update)
STATS_NAME(ble_gap_stats, update_fail)
STATS_NAME(ble_gap_stats, connect_mst)
STATS_NAME(ble_gap_stats, connect_slv)
STATS_NAME(ble_gap_stats, disconnect)
STATS_NAME(ble_gap_stats, rx_disconnect)
STATS_NAME(ble_gap_stats, rx_update_complete)
STATS_NAME(ble_gap_stats, rx_adv_report)
STATS_NAME(ble_gap_stats, rx_conn_complete)
STATS_NAME(ble_gap_stats, discover_cancel)
STATS_NAME(ble_gap_stats, discover_cancel_fail)
STATS_NAME(ble_gap_stats, security_initiate)
STATS_NAME(ble_gap_stats, security_initiate_fail)
STATS_NAME_END(ble_gap_stats)
/*****************************************************************************
* $debug *
*****************************************************************************/
#if MYNEWT_VAL(BLE_HS_DEBUG)
int
ble_gap_dbg_update_active(uint16_t conn_handle)
{
const struct ble_gap_update_entry *entry;
ble_hs_lock();
entry = ble_gap_update_entry_find(conn_handle, NULL);
ble_hs_unlock();
return entry != NULL;
}
#endif
/*****************************************************************************
* $log *
*****************************************************************************/
#if NIMBLE_BLE_SCAN && !MYNEWT_VAL(BLE_EXT_ADV)
static void
ble_gap_log_duration(int32_t duration_ms)
{
if (duration_ms == BLE_HS_FOREVER) {
BLE_HS_LOG(INFO, "duration=forever");
} else {
BLE_HS_LOG(INFO, "duration=%dms", duration_ms);
}
}
#endif
#if !MYNEWT_VAL(BLE_EXT_ADV)
static void
ble_gap_log_conn(uint8_t own_addr_type, const ble_addr_t *peer_addr,
const struct ble_gap_conn_params *params)
{
if (peer_addr != NULL) {
BLE_HS_LOG(INFO, "peer_addr_type=%d peer_addr=", peer_addr->type);
BLE_HS_LOG_ADDR(INFO, peer_addr->val);
}
BLE_HS_LOG(INFO, " scan_itvl=%d scan_window=%d itvl_min=%d itvl_max=%d "
"latency=%d supervision_timeout=%d min_ce_len=%d "
"max_ce_len=%d own_addr_type=%d",
params->scan_itvl, params->scan_window, params->itvl_min,
params->itvl_max, params->latency, params->supervision_timeout,
params->min_ce_len, params->max_ce_len, own_addr_type);
}
#endif
#if NIMBLE_BLE_SCAN && !MYNEWT_VAL(BLE_EXT_ADV)
static void
ble_gap_log_disc(uint8_t own_addr_type, int32_t duration_ms,
const struct ble_gap_disc_params *disc_params)
{
BLE_HS_LOG(INFO, "own_addr_type=%d filter_policy=%d passive=%d limited=%d "
"filter_duplicates=%d ",
own_addr_type, disc_params->filter_policy, disc_params->passive,
disc_params->limited, disc_params->filter_duplicates);
ble_gap_log_duration(duration_ms);
}
#endif
static void
ble_gap_log_update(uint16_t conn_handle,
const struct ble_gap_upd_params *params)
{
BLE_HS_LOG(INFO, "connection parameter update; "
"conn_handle=%d itvl_min=%d itvl_max=%d latency=%d "
"supervision_timeout=%d min_ce_len=%d max_ce_len=%d",
conn_handle, params->itvl_min, params->itvl_max,
params->latency, params->supervision_timeout,
params->min_ce_len, params->max_ce_len);
}
static void
ble_gap_log_wl(const ble_addr_t *addr, uint8_t white_list_count)
{
int i;
BLE_HS_LOG(INFO, "count=%d ", white_list_count);
for (i = 0; i < white_list_count; i++, addr++) {
BLE_HS_LOG(INFO, "entry-%d={addr_type=%d addr=", i, addr->type);
BLE_HS_LOG_ADDR(INFO, addr->val);
BLE_HS_LOG(INFO, "} ");
}
}
#if NIMBLE_BLE_ADVERTISE && !MYNEWT_VAL(BLE_EXT_ADV)
static void
ble_gap_log_adv(uint8_t own_addr_type, const ble_addr_t *direct_addr,
const struct ble_gap_adv_params *adv_params)
{
BLE_HS_LOG(INFO, "disc_mode=%d", adv_params->disc_mode);
if (direct_addr) {
BLE_HS_LOG(INFO, " direct_addr_type=%d direct_addr=",
direct_addr->type);
BLE_HS_LOG_ADDR(INFO, direct_addr->val);
}
BLE_HS_LOG(INFO, " adv_channel_map=%d own_addr_type=%d "
"adv_filter_policy=%d adv_itvl_min=%d adv_itvl_max=%d",
adv_params->channel_map,
own_addr_type,
adv_params->filter_policy,
adv_params->itvl_min,
adv_params->itvl_max);
}
#endif
/*****************************************************************************
* $snapshot *
*****************************************************************************/
static void
ble_gap_fill_conn_desc(struct ble_hs_conn *conn,
struct ble_gap_conn_desc *desc)
{
struct ble_hs_conn_addrs addrs;
ble_hs_conn_addrs(conn, &addrs);
desc->our_id_addr = addrs.our_id_addr;
#if MYNEWT_VAL(BLE_HOST_BASED_PRIVACY)
/* Check if the privacy is enabled, change the address type accordingly
* */
if (ble_host_rpa_enabled())
{
uint8_t *local_id = NULL;
struct ble_hs_resolv_entry *rl = NULL;
rl = ble_hs_resolv_list_find(conn->bhc_peer_addr.val);
if (rl != NULL) {
/* Get public ID address here */
ble_hs_id_addr(BLE_ADDR_PUBLIC, (const uint8_t **) &local_id, NULL);
memcpy(desc->our_id_addr.val, local_id, BLE_DEV_ADDR_LEN);
desc->our_id_addr.type = BLE_ADDR_PUBLIC;
}
}
#endif
desc->peer_id_addr = addrs.peer_id_addr;
desc->our_ota_addr = addrs.our_ota_addr;
desc->peer_ota_addr = addrs.peer_ota_addr;
desc->conn_handle = conn->bhc_handle;
desc->conn_itvl = conn->bhc_itvl;
desc->conn_latency = conn->bhc_latency;
desc->supervision_timeout = conn->bhc_supervision_timeout;
desc->master_clock_accuracy = conn->bhc_master_clock_accuracy;
desc->sec_state = conn->bhc_sec_state;
if (conn->bhc_flags & BLE_HS_CONN_F_MASTER) {
desc->role = BLE_GAP_ROLE_MASTER;
} else {
desc->role = BLE_GAP_ROLE_SLAVE;
}
}
static void
ble_gap_conn_to_snapshot(struct ble_hs_conn *conn,
struct ble_gap_snapshot *snap)
{
ble_gap_fill_conn_desc(conn, snap->desc);
snap->cb = conn->bhc_cb;
snap->cb_arg = conn->bhc_cb_arg;
}
static int
ble_gap_find_snapshot(uint16_t handle, struct ble_gap_snapshot *snap)
{
struct ble_hs_conn *conn;
ble_hs_lock();
conn = ble_hs_conn_find(handle);
if (conn != NULL) {
ble_gap_conn_to_snapshot(conn, snap);
}
ble_hs_unlock();
if (conn == NULL) {
return BLE_HS_ENOTCONN;
} else {
return 0;
}
}
int
ble_gap_conn_find(uint16_t handle, struct ble_gap_conn_desc *out_desc)
{
struct ble_hs_conn *conn;
ble_hs_lock();
conn = ble_hs_conn_find(handle);
if (conn != NULL && out_desc != NULL) {
ble_gap_fill_conn_desc(conn, out_desc);
}
ble_hs_unlock();
if (conn == NULL) {
return BLE_HS_ENOTCONN;
} else {
return 0;
}
}
int
ble_gap_conn_find_by_addr(const ble_addr_t *addr,
struct ble_gap_conn_desc *out_desc)
{
struct ble_hs_conn *conn;
ble_hs_lock();
conn = ble_hs_conn_find_by_addr(addr);
if (conn != NULL && out_desc != NULL) {
ble_gap_fill_conn_desc(conn, out_desc);
}
ble_hs_unlock();
if (conn == NULL) {
return BLE_HS_ENOTCONN;
}
return 0;
}
static int
ble_gap_extract_conn_cb(uint16_t conn_handle,
ble_gap_event_fn **out_cb, void **out_cb_arg)
{
const struct ble_hs_conn *conn;
BLE_HS_DBG_ASSERT(conn_handle <= BLE_HCI_LE_CONN_HANDLE_MAX);
ble_hs_lock();
conn = ble_hs_conn_find(conn_handle);
if (conn != NULL) {
*out_cb = conn->bhc_cb;
*out_cb_arg = conn->bhc_cb_arg;
} else {
*out_cb = NULL;
*out_cb_arg = NULL;
}
ble_hs_unlock();
if (conn == NULL) {
return BLE_HS_ENOTCONN;
} else {
return 0;
}
}
int
ble_gap_set_priv_mode(const ble_addr_t *peer_addr, uint8_t priv_mode)
{
return ble_hs_pvcy_set_mode(peer_addr, priv_mode);
}
int
ble_gap_read_le_phy(uint16_t conn_handle, uint8_t *tx_phy, uint8_t *rx_phy)
{
struct ble_hs_conn *conn;
uint8_t buf[BLE_HCI_LE_RD_PHY_LEN];
uint8_t rspbuf[4];
uint8_t rsplen;
int rc;
ble_hs_lock();
conn = ble_hs_conn_find(conn_handle);
ble_hs_unlock();
if (conn == NULL) {
return BLE_HS_ENOTCONN;
}
rc = ble_hs_hci_cmd_build_le_read_phy(conn_handle, buf, sizeof(buf));
if (rc != 0) {
return rc;
}
rc = ble_hs_hci_cmd_tx(BLE_HCI_OP(BLE_HCI_OGF_LE, BLE_HCI_OCF_LE_RD_PHY),
buf, sizeof(buf), rspbuf, sizeof(rspbuf), &rsplen);
if (rc != 0) {
return rc;
}
if (rsplen != sizeof(rspbuf)) {
return BLE_HS_ECONTROLLER;
}
/* First two octets is conn_handle. We can ignore it */
*tx_phy = rspbuf[2];
*rx_phy = rspbuf[3];
return 0;
}
int
ble_gap_set_prefered_default_le_phy(uint8_t tx_phys_mask, uint8_t rx_phys_mask)
{
uint8_t buf[BLE_HCI_LE_SET_DEFAULT_PHY_LEN];
int rc;
rc = ble_hs_hci_cmd_build_le_set_default_phy(tx_phys_mask, rx_phys_mask,
buf, sizeof(buf));
if (rc != 0) {
return rc;
}
return ble_hs_hci_cmd_tx(BLE_HCI_OP(BLE_HCI_OGF_LE,
BLE_HCI_OCF_LE_SET_DEFAULT_PHY),
buf, sizeof(buf), NULL, 0, NULL);
}
int
ble_gap_set_prefered_le_phy(uint16_t conn_handle, uint8_t tx_phys_mask,
uint8_t rx_phys_mask, uint16_t phy_opts)
{
struct ble_hs_conn *conn;
uint8_t buf[BLE_HCI_LE_SET_PHY_LEN];
int rc;
ble_hs_lock();
conn = ble_hs_conn_find(conn_handle);
ble_hs_unlock();
if (conn == NULL) {
return BLE_HS_ENOTCONN;
}
rc = ble_hs_hci_cmd_build_le_set_phy(conn_handle, tx_phys_mask,
rx_phys_mask, phy_opts, buf,
sizeof(buf));
if (rc != 0) {
return rc;
}
return ble_hs_hci_cmd_tx(
BLE_HCI_OP(BLE_HCI_OGF_LE, BLE_HCI_OCF_LE_SET_PHY),
buf, sizeof(buf), NULL, 0, NULL);
}
/*****************************************************************************
* $misc *
*****************************************************************************/
static int
ble_gap_event_listener_call(struct ble_gap_event *event);
static int
ble_gap_call_event_cb(struct ble_gap_event *event,
ble_gap_event_fn *cb, void *cb_arg)
{
int rc;
BLE_HS_DBG_ASSERT(!ble_hs_locked_by_cur_task());
if (cb != NULL) {
rc = cb(event, cb_arg);
} else {
if (event->type == BLE_GAP_EVENT_CONN_UPDATE_REQ) {
/* Just copy peer parameters back into the reply. */
*event->conn_update_req.self_params =
*event->conn_update_req.peer_params;
}
rc = 0;
}
return rc;
}
static int
ble_gap_call_conn_event_cb(struct ble_gap_event *event, uint16_t conn_handle)
{
ble_gap_event_fn *cb;
void *cb_arg;
int rc;
rc = ble_gap_extract_conn_cb(conn_handle, &cb, &cb_arg);
if (rc != 0) {
return rc;
}
rc = ble_gap_call_event_cb(event, cb, cb_arg);
if (rc != 0) {
return rc;
}
return 0;
}
static bool
ble_gap_is_preempted(void)
{
int i;
BLE_HS_DBG_ASSERT(ble_hs_locked_by_cur_task());
if (ble_gap_master.preempted_op != BLE_GAP_OP_NULL) {
return true;
}
for (i = 0; i < BLE_ADV_INSTANCES; i++) {
if (ble_gap_slave[i].preempted) {
return true;
}
}
return false;
}
static void
ble_gap_master_reset_state(void)
{
ble_gap_master.op = BLE_GAP_OP_NULL;
ble_gap_master.exp_set = 0;
ble_gap_master.conn.cancel = 0;
ble_hs_timer_resched();
}
static void
ble_gap_slave_reset_state(uint8_t instance)
{
ble_gap_slave[instance].op = BLE_GAP_OP_NULL;
#if !MYNEWT_VAL(BLE_EXT_ADV)
ble_gap_slave[instance].exp_set = 0;
ble_hs_timer_resched();
#endif
}
static bool
ble_gap_has_client(struct ble_gap_master_state *out_state)
{
if (!out_state) {
return 0;
}
return out_state->cb;
}
static void
ble_gap_master_extract_state(struct ble_gap_master_state *out_state,
int reset_state)
{
ble_hs_lock();
*out_state = ble_gap_master;
if (reset_state) {
ble_gap_master_reset_state();
ble_gap_master.preempted_op = BLE_GAP_OP_NULL;
}
ble_hs_unlock();
}
static void
ble_gap_slave_extract_cb(uint8_t instance,
ble_gap_event_fn **out_cb, void **out_cb_arg)
{
ble_hs_lock();
*out_cb = ble_gap_slave[instance].cb;
*out_cb_arg = ble_gap_slave[instance].cb_arg;
ble_gap_slave_reset_state(instance);
ble_hs_unlock();
}
static void
ble_gap_adv_finished(uint8_t instance, int reason, uint16_t conn_handle,
uint8_t num_events)
{
struct ble_gap_event event;
ble_gap_event_fn *cb;
void *cb_arg;
ble_gap_slave_extract_cb(instance, &cb, &cb_arg);
if (cb != NULL) {
memset(&event, 0, sizeof event);
event.type = BLE_GAP_EVENT_ADV_COMPLETE;
event.adv_complete.reason = reason;
#if MYNEWT_VAL(BLE_EXT_ADV)
event.adv_complete.instance = instance;
event.adv_complete.conn_handle = conn_handle;
event.adv_complete.num_ext_adv_events = num_events;
#endif
cb(&event, cb_arg);
}
}
#if MYNEWT_VAL(BLE_EXT_ADV)
static void
ble_gap_scan_req_rcvd(uint8_t instance, uint8_t scan_addr_type,
uint8_t *scan_addr)
{
struct ble_gap_event event;
ble_gap_event_fn *cb;
void *cb_arg;
ble_gap_slave_extract_cb(instance, &cb, &cb_arg);
if (cb != NULL) {
memset(&event, 0, sizeof event);
event.type = BLE_GAP_EVENT_SCAN_REQ_RCVD;
event.scan_req_rcvd.instance = instance;
event.scan_req_rcvd.scan_addr.type = scan_addr_type;
memcpy(event.scan_req_rcvd.scan_addr.val, scan_addr, 6);
cb(&event, cb_arg);
}
}
#endif
static int
ble_gap_master_connect_failure(int status)
{
struct ble_gap_master_state state;
struct ble_gap_event event;
int rc;
ble_gap_master_extract_state(&state, 1);
if (ble_gap_has_client(&state)) {
memset(&event, 0, sizeof event);
event.type = BLE_GAP_EVENT_CONNECT;
event.connect.status = status;
rc = state.cb(&event, state.cb_arg);
} else {
rc = 0;
}
return rc;
}
static void
ble_gap_master_connect_cancelled(void)
{
struct ble_gap_master_state state;
struct ble_gap_event event;
ble_gap_master_extract_state(&state, 1);
if (state.cb != NULL) {
memset(&event, 0, sizeof event);
event.type = BLE_GAP_EVENT_CONNECT;
event.connect.conn_handle = BLE_HS_CONN_HANDLE_NONE;
if (state.conn.cancel) {
/* Connect procedure successfully cancelled. */
event.connect.status = BLE_HS_EAPP;
} else {
/* Connect procedure timed out. */
event.connect.status = BLE_HS_ETIMEOUT;
}
state.cb(&event, state.cb_arg);
}
}
static void
ble_gap_disc_report(void *desc)
{
struct ble_gap_master_state state;
struct ble_gap_event event;
memset(&event, 0, sizeof event);
#if MYNEWT_VAL(BLE_EXT_ADV)
event.type = BLE_GAP_EVENT_EXT_DISC;
event.ext_disc = *((struct ble_gap_ext_disc_desc *)desc);
#else
event.type = BLE_GAP_EVENT_DISC;
event.disc = *((struct ble_gap_disc_desc *)desc);
#endif
ble_gap_master_extract_state(&state, 0);
if (ble_gap_has_client(&state)) {
state.cb(&event, state.cb_arg);
}
ble_gap_event_listener_call(&event);
}
#if NIMBLE_BLE_SCAN
static void
ble_gap_disc_complete(void)
{
struct ble_gap_master_state state;
struct ble_gap_event event;
memset(&event, 0, sizeof event);
event.type = BLE_GAP_EVENT_DISC_COMPLETE;
event.disc_complete.reason = 0;
ble_gap_master_extract_state(&state, 1);
if (ble_gap_has_client(&state)) {
ble_gap_call_event_cb(&event, state.cb, state.cb_arg);
}
ble_gap_event_listener_call(&event);
}
#endif
static void
ble_gap_update_notify(uint16_t conn_handle, int status)
{
struct ble_gap_event event;
memset(&event, 0, sizeof event);
event.type = BLE_GAP_EVENT_CONN_UPDATE;
event.conn_update.conn_handle = conn_handle;
event.conn_update.status = status;
ble_gap_event_listener_call(&event);
ble_gap_call_conn_event_cb(&event, conn_handle);
/* Terminate the connection on procedure timeout. */
if (status == BLE_HS_ETIMEOUT) {
ble_gap_terminate(conn_handle, BLE_ERR_REM_USER_CONN_TERM);
}
}
static uint32_t
ble_gap_master_ticks_until_exp(void)
{
ble_npl_stime_t ticks;
if (ble_gap_master.op == BLE_GAP_OP_NULL || !ble_gap_master.exp_set) {
/* Timer not set; infinity ticks until next event. */
return BLE_HS_FOREVER;
}
ticks = ble_gap_master.exp_os_ticks - ble_npl_time_get();
if (ticks > 0) {
/* Timer not expired yet. */
return ticks;
}
/* Timer just expired. */
return 0;
}
#if !MYNEWT_VAL(BLE_EXT_ADV)
static uint32_t
ble_gap_slave_ticks_until_exp(void)
{
ble_npl_stime_t ticks;
if (ble_gap_slave[0].op == BLE_GAP_OP_NULL || !ble_gap_slave[0].exp_set) {
/* Timer not set; infinity ticks until next event. */
return BLE_HS_FOREVER;
}
ticks = ble_gap_slave[0].exp_os_ticks - ble_npl_time_get();
if (ticks > 0) {
/* Timer not expired yet. */
return ticks;
}
/* Timer just expired. */
return 0;
}
#endif
/**
* Finds the update procedure that expires soonest.
*
* @param out_ticks_from_now On success, the ticks until the update
* procedure's expiry time gets written here.
*
* @return The connection handle of the update procedure
* that expires soonest, or
* BLE_HS_CONN_HANDLE_NONE if there are no
* active update procedures.
*/
static uint16_t
ble_gap_update_next_exp(int32_t *out_ticks_from_now)
{
struct ble_gap_update_entry *entry;
ble_npl_time_t now;
uint16_t conn_handle;
int32_t best_ticks;
int32_t ticks;
BLE_HS_DBG_ASSERT(ble_hs_locked_by_cur_task());
conn_handle = BLE_HS_CONN_HANDLE_NONE;
best_ticks = BLE_HS_FOREVER;
now = ble_npl_time_get();
SLIST_FOREACH(entry, &ble_gap_update_entries, next) {
ticks = entry->exp_os_ticks - now;
if (ticks <= 0) {
ticks = 0;
}
if (ticks < best_ticks) {
conn_handle = entry->conn_handle;
best_ticks = ticks;
}
}
if (out_ticks_from_now != NULL) {
*out_ticks_from_now = best_ticks;
}
return conn_handle;
}
static void
ble_gap_master_set_timer(uint32_t ticks_from_now)
{
ble_gap_master.exp_os_ticks = ble_npl_time_get() + ticks_from_now;
ble_gap_master.exp_set = 1;
ble_hs_timer_resched();
}
#if NIMBLE_BLE_ADVERTISE && !MYNEWT_VAL(BLE_EXT_ADV)
static void
ble_gap_slave_set_timer(uint32_t ticks_from_now)
{
ble_gap_slave[0].exp_os_ticks = ble_npl_time_get() + ticks_from_now;
ble_gap_slave[0].exp_set = 1;
ble_hs_timer_resched();
}
#endif
/**
* Called when an error is encountered while the master-connection-fsm is
* active.