blob: 814c12774f8b7789fa26079359c42fafd6820af6 [file] [log] [blame]
/*
* Copyright (c) 2017-2021 Nordic Semiconductor ASA
* Copyright (c) 2015-2016 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <sys/types.h>
#include <zephyr/sys/byteorder.h>
#include <zephyr/sys/check.h>
#include <zephyr/bluetooth/bluetooth.h>
#include <zephyr/bluetooth/iso.h>
#include <zephyr/bluetooth/buf.h>
#include <zephyr/bluetooth/direction.h>
#include <zephyr/bluetooth/addr.h>
#include <zephyr/bluetooth/hci.h>
#include <zephyr/bluetooth/hci_vs.h>
#include "hci_core.h"
#include "conn_internal.h"
#include "direction_internal.h"
#include "id.h"
#define BT_DBG_ENABLED IS_ENABLED(CONFIG_BT_DEBUG_HCI_CORE)
#define LOG_MODULE_NAME bt_scan
#include "common/log.h"
static bt_le_scan_cb_t *scan_dev_found_cb;
static sys_slist_t scan_cbs = SYS_SLIST_STATIC_INIT(&scan_cbs);
#if defined(CONFIG_BT_EXT_ADV)
/* A buffer used to reassemble advertisement data from the controller. */
NET_BUF_SIMPLE_DEFINE(ext_scan_buf, CONFIG_BT_EXT_SCAN_BUF_SIZE);
struct fragmented_advertiser {
bt_addr_le_t addr;
uint8_t sid;
enum {
FRAG_ADV_INACTIVE,
FRAG_ADV_REASSEMBLING,
FRAG_ADV_DISCARDING,
} state;
};
static struct fragmented_advertiser reassembling_advertiser;
static bool fragmented_advertisers_equal(const struct fragmented_advertiser *a,
const bt_addr_le_t *addr, uint8_t sid)
{
/* Two advertisers are equal if they are the same adv set from the same device */
return a->sid == sid && bt_addr_le_cmp(&a->addr, addr) == 0;
}
/* Sets the address and sid of the advertiser to be reassembled. */
static void init_reassembling_advertiser(const bt_addr_le_t *addr, uint8_t sid)
{
bt_addr_le_copy(&reassembling_advertiser.addr, addr);
reassembling_advertiser.sid = sid;
reassembling_advertiser.state = FRAG_ADV_REASSEMBLING;
}
static void reset_reassembling_advertiser(void)
{
net_buf_simple_reset(&ext_scan_buf);
reassembling_advertiser.state = FRAG_ADV_INACTIVE;
}
#if defined(CONFIG_BT_PER_ADV_SYNC)
static struct bt_le_per_adv_sync *get_pending_per_adv_sync(void);
static struct bt_le_per_adv_sync per_adv_sync_pool[CONFIG_BT_PER_ADV_SYNC_MAX];
static sys_slist_t pa_sync_cbs = SYS_SLIST_STATIC_INIT(&pa_sync_cbs);
#endif /* defined(CONFIG_BT_PER_ADV_SYNC) */
#endif /* defined(CONFIG_BT_EXT_ADV) */
void bt_scan_reset(void)
{
scan_dev_found_cb = NULL;
#if defined(CONFIG_BT_EXT_ADV)
reset_reassembling_advertiser();
#endif
}
static int set_le_ext_scan_enable(uint8_t enable, uint16_t duration)
{
struct bt_hci_cp_le_set_ext_scan_enable *cp;
struct bt_hci_cmd_state_set state;
struct net_buf *buf;
int err;
buf = bt_hci_cmd_create(BT_HCI_OP_LE_SET_EXT_SCAN_ENABLE, sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = net_buf_add(buf, sizeof(*cp));
if (enable == BT_HCI_LE_SCAN_ENABLE) {
cp->filter_dup = atomic_test_bit(bt_dev.flags,
BT_DEV_SCAN_FILTER_DUP);
} else {
cp->filter_dup = BT_HCI_LE_SCAN_FILTER_DUP_DISABLE;
}
cp->enable = enable;
cp->duration = sys_cpu_to_le16(duration);
cp->period = 0;
bt_hci_cmd_state_set_init(buf, &state, bt_dev.flags, BT_DEV_SCANNING,
enable == BT_HCI_LE_SCAN_ENABLE);
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_SET_EXT_SCAN_ENABLE, buf, NULL);
if (err) {
return err;
}
return 0;
}
static int bt_le_scan_set_enable_legacy(uint8_t enable)
{
struct bt_hci_cp_le_set_scan_enable *cp;
struct bt_hci_cmd_state_set state;
struct net_buf *buf;
int err;
buf = bt_hci_cmd_create(BT_HCI_OP_LE_SET_SCAN_ENABLE, sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = net_buf_add(buf, sizeof(*cp));
if (enable == BT_HCI_LE_SCAN_ENABLE) {
cp->filter_dup = atomic_test_bit(bt_dev.flags,
BT_DEV_SCAN_FILTER_DUP);
} else {
cp->filter_dup = BT_HCI_LE_SCAN_FILTER_DUP_DISABLE;
}
cp->enable = enable;
bt_hci_cmd_state_set_init(buf, &state, bt_dev.flags, BT_DEV_SCANNING,
enable == BT_HCI_LE_SCAN_ENABLE);
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_SET_SCAN_ENABLE, buf, NULL);
if (err) {
return err;
}
return 0;
}
int bt_le_scan_set_enable(uint8_t enable)
{
if (IS_ENABLED(CONFIG_BT_EXT_ADV) &&
BT_DEV_FEAT_LE_EXT_ADV(bt_dev.le.features)) {
return set_le_ext_scan_enable(enable, 0);
}
return bt_le_scan_set_enable_legacy(enable);
}
static int start_le_scan_ext(struct bt_hci_ext_scan_phy *phy_1m,
struct bt_hci_ext_scan_phy *phy_coded,
uint16_t duration)
{
struct bt_hci_cp_le_set_ext_scan_param *set_param;
struct net_buf *buf;
uint8_t own_addr_type;
bool active_scan;
int err;
active_scan = (phy_1m && phy_1m->type == BT_HCI_LE_SCAN_ACTIVE) ||
(phy_coded && phy_coded->type == BT_HCI_LE_SCAN_ACTIVE);
if (duration > 0) {
atomic_set_bit(bt_dev.flags, BT_DEV_SCAN_LIMITED);
/* Allow bt_le_oob_get_local to be called directly before
* starting a scan limited by timeout.
*/
if (IS_ENABLED(CONFIG_BT_PRIVACY) && !bt_id_rpa_is_new()) {
atomic_clear_bit(bt_dev.flags, BT_DEV_RPA_VALID);
}
}
err = bt_id_set_scan_own_addr(active_scan, &own_addr_type);
if (err) {
return err;
}
buf = bt_hci_cmd_create(BT_HCI_OP_LE_SET_EXT_SCAN_PARAM,
sizeof(*set_param) +
(phy_1m ? sizeof(*phy_1m) : 0) +
(phy_coded ? sizeof(*phy_coded) : 0));
if (!buf) {
return -ENOBUFS;
}
set_param = net_buf_add(buf, sizeof(*set_param));
set_param->own_addr_type = own_addr_type;
set_param->phys = 0;
if (IS_ENABLED(CONFIG_BT_FILTER_ACCEPT_LIST) &&
atomic_test_bit(bt_dev.flags, BT_DEV_SCAN_FILTERED)) {
set_param->filter_policy = BT_HCI_LE_SCAN_FP_BASIC_FILTER;
} else {
set_param->filter_policy = BT_HCI_LE_SCAN_FP_BASIC_NO_FILTER;
}
if (phy_1m) {
set_param->phys |= BT_HCI_LE_EXT_SCAN_PHY_1M;
net_buf_add_mem(buf, phy_1m, sizeof(*phy_1m));
}
if (phy_coded) {
set_param->phys |= BT_HCI_LE_EXT_SCAN_PHY_CODED;
net_buf_add_mem(buf, phy_coded, sizeof(*phy_coded));
}
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_SET_EXT_SCAN_PARAM, buf, NULL);
if (err) {
return err;
}
err = set_le_ext_scan_enable(BT_HCI_LE_SCAN_ENABLE, duration);
if (err) {
return err;
}
atomic_set_bit_to(bt_dev.flags, BT_DEV_ACTIVE_SCAN, active_scan);
return 0;
}
static int start_le_scan_legacy(uint8_t scan_type, uint16_t interval, uint16_t window)
{
struct bt_hci_cp_le_set_scan_param set_param;
struct net_buf *buf;
int err;
bool active_scan;
(void)memset(&set_param, 0, sizeof(set_param));
set_param.scan_type = scan_type;
/* for the rest parameters apply default values according to
* spec 4.2, vol2, part E, 7.8.10
*/
set_param.interval = sys_cpu_to_le16(interval);
set_param.window = sys_cpu_to_le16(window);
if (IS_ENABLED(CONFIG_BT_FILTER_ACCEPT_LIST) &&
atomic_test_bit(bt_dev.flags, BT_DEV_SCAN_FILTERED)) {
set_param.filter_policy = BT_HCI_LE_SCAN_FP_BASIC_FILTER;
} else {
set_param.filter_policy = BT_HCI_LE_SCAN_FP_BASIC_NO_FILTER;
}
active_scan = scan_type == BT_HCI_LE_SCAN_ACTIVE;
err = bt_id_set_scan_own_addr(active_scan, &set_param.addr_type);
if (err) {
return err;
}
buf = bt_hci_cmd_create(BT_HCI_OP_LE_SET_SCAN_PARAM, sizeof(set_param));
if (!buf) {
return -ENOBUFS;
}
net_buf_add_mem(buf, &set_param, sizeof(set_param));
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_SET_SCAN_PARAM, buf, NULL);
if (err) {
return err;
}
err = bt_le_scan_set_enable(BT_HCI_LE_SCAN_ENABLE);
if (err) {
return err;
}
atomic_set_bit_to(bt_dev.flags, BT_DEV_ACTIVE_SCAN, active_scan);
return 0;
}
static int start_passive_scan(bool fast_scan)
{
uint16_t interval, window;
if (fast_scan) {
interval = BT_GAP_SCAN_FAST_INTERVAL;
window = BT_GAP_SCAN_FAST_WINDOW;
} else {
interval = CONFIG_BT_BACKGROUND_SCAN_INTERVAL;
window = CONFIG_BT_BACKGROUND_SCAN_WINDOW;
}
if (IS_ENABLED(CONFIG_BT_EXT_ADV) &&
BT_DEV_FEAT_LE_EXT_ADV(bt_dev.le.features)) {
struct bt_hci_ext_scan_phy scan;
scan.type = BT_HCI_LE_SCAN_PASSIVE;
scan.interval = sys_cpu_to_le16(interval);
scan.window = sys_cpu_to_le16(window);
return start_le_scan_ext(&scan, NULL, 0);
}
return start_le_scan_legacy(BT_HCI_LE_SCAN_PASSIVE, interval, window);
}
int bt_le_scan_update(bool fast_scan)
{
if (atomic_test_bit(bt_dev.flags, BT_DEV_EXPLICIT_SCAN)) {
return 0;
}
if (atomic_test_bit(bt_dev.flags, BT_DEV_SCANNING)) {
int err;
err = bt_le_scan_set_enable(BT_HCI_LE_SCAN_DISABLE);
if (err) {
return err;
}
}
if (IS_ENABLED(CONFIG_BT_CENTRAL)) {
struct bt_conn *conn;
/* don't restart scan if we have pending connection */
conn = bt_conn_lookup_state_le(BT_ID_DEFAULT, NULL,
BT_CONN_CONNECTING);
if (conn) {
bt_conn_unref(conn);
return 0;
}
conn = bt_conn_lookup_state_le(BT_ID_DEFAULT, NULL,
BT_CONN_CONNECTING_SCAN);
if (conn) {
atomic_set_bit(bt_dev.flags, BT_DEV_SCAN_FILTER_DUP);
bt_conn_unref(conn);
return start_passive_scan(fast_scan);
}
}
#if defined(CONFIG_BT_PER_ADV_SYNC)
if (get_pending_per_adv_sync()) {
return start_passive_scan(fast_scan);
}
#endif
return 0;
}
#if defined(CONFIG_BT_CENTRAL)
static void check_pending_conn(const bt_addr_le_t *id_addr,
const bt_addr_le_t *addr, uint8_t adv_props)
{
struct bt_conn *conn;
/* No connections are allowed during explicit scanning */
if (atomic_test_bit(bt_dev.flags, BT_DEV_EXPLICIT_SCAN)) {
return;
}
/* Return if event is not connectable */
if (!(adv_props & BT_HCI_LE_ADV_EVT_TYPE_CONN)) {
return;
}
conn = bt_conn_lookup_state_le(BT_ID_DEFAULT, id_addr,
BT_CONN_CONNECTING_SCAN);
if (!conn) {
return;
}
if (atomic_test_bit(bt_dev.flags, BT_DEV_SCANNING) &&
bt_le_scan_set_enable(BT_HCI_LE_SCAN_DISABLE)) {
goto failed;
}
bt_addr_le_copy(&conn->le.resp_addr, addr);
if (bt_le_create_conn(conn)) {
goto failed;
}
bt_conn_set_state(conn, BT_CONN_CONNECTING);
bt_conn_unref(conn);
return;
failed:
conn->err = BT_HCI_ERR_UNSPECIFIED;
bt_conn_set_state(conn, BT_CONN_DISCONNECTED);
bt_conn_unref(conn);
bt_le_scan_update(false);
}
#endif /* CONFIG_BT_CENTRAL */
/* Convert Legacy adv report evt_type field to adv props */
static uint8_t get_adv_props_legacy(uint8_t evt_type)
{
switch (evt_type) {
case BT_GAP_ADV_TYPE_ADV_IND:
return BT_GAP_ADV_PROP_CONNECTABLE |
BT_GAP_ADV_PROP_SCANNABLE;
case BT_GAP_ADV_TYPE_ADV_DIRECT_IND:
return BT_GAP_ADV_PROP_CONNECTABLE |
BT_GAP_ADV_PROP_DIRECTED;
case BT_GAP_ADV_TYPE_ADV_SCAN_IND:
return BT_GAP_ADV_PROP_SCANNABLE;
case BT_GAP_ADV_TYPE_ADV_NONCONN_IND:
return 0;
/* In legacy advertising report, we don't know if the scan
* response come from a connectable advertiser, so don't
* set connectable property bit.
*/
case BT_GAP_ADV_TYPE_SCAN_RSP:
return BT_GAP_ADV_PROP_SCAN_RESPONSE |
BT_GAP_ADV_PROP_SCANNABLE;
default:
return 0;
}
}
static void le_adv_recv(bt_addr_le_t *addr, struct bt_le_scan_recv_info *info,
struct net_buf_simple *buf, uint16_t len)
{
struct bt_le_scan_cb *listener, *next;
struct net_buf_simple_state state;
bt_addr_le_t id_addr;
BT_DBG("%s event %u, len %u, rssi %d dBm", bt_addr_le_str(addr),
info->adv_type, len, info->rssi);
if (!IS_ENABLED(CONFIG_BT_PRIVACY) &&
!IS_ENABLED(CONFIG_BT_SCAN_WITH_IDENTITY) &&
atomic_test_bit(bt_dev.flags, BT_DEV_EXPLICIT_SCAN) &&
(info->adv_props & BT_HCI_LE_ADV_PROP_DIRECT)) {
BT_DBG("Dropped direct adv report");
return;
}
if (addr->type == BT_ADDR_LE_PUBLIC_ID ||
addr->type == BT_ADDR_LE_RANDOM_ID) {
bt_addr_le_copy(&id_addr, addr);
id_addr.type -= BT_ADDR_LE_PUBLIC_ID;
} else if (addr->type == BT_HCI_PEER_ADDR_ANONYMOUS) {
bt_addr_le_copy(&id_addr, BT_ADDR_LE_ANY);
} else {
bt_addr_le_copy(&id_addr,
bt_lookup_id_addr(BT_ID_DEFAULT, addr));
}
if (scan_dev_found_cb) {
net_buf_simple_save(buf, &state);
buf->len = len;
scan_dev_found_cb(&id_addr, info->rssi, info->adv_type, buf);
net_buf_simple_restore(buf, &state);
}
info->addr = &id_addr;
SYS_SLIST_FOR_EACH_CONTAINER_SAFE(&scan_cbs, listener, next, node) {
if (listener->recv) {
net_buf_simple_save(buf, &state);
buf->len = len;
listener->recv(info, buf);
net_buf_simple_restore(buf, &state);
}
}
/* Clear pointer to this stack frame before returning to calling function */
info->addr = NULL;
#if defined(CONFIG_BT_CENTRAL)
check_pending_conn(&id_addr, addr, info->adv_props);
#endif /* CONFIG_BT_CENTRAL */
}
#if defined(CONFIG_BT_EXT_ADV)
void bt_hci_le_scan_timeout(struct net_buf *buf)
{
struct bt_le_scan_cb *listener, *next;
atomic_clear_bit(bt_dev.flags, BT_DEV_SCANNING);
atomic_clear_bit(bt_dev.flags, BT_DEV_EXPLICIT_SCAN);
atomic_clear_bit(bt_dev.flags, BT_DEV_SCAN_LIMITED);
atomic_clear_bit(bt_dev.flags, BT_DEV_RPA_VALID);
#if defined(CONFIG_BT_SMP)
bt_id_pending_keys_update();
#endif
SYS_SLIST_FOR_EACH_CONTAINER_SAFE(&scan_cbs, listener, next, node) {
if (listener->timeout) {
listener->timeout();
}
}
}
/* Convert Extended adv report evt_type field into adv type */
static uint8_t get_adv_type(uint8_t evt_type)
{
switch (evt_type) {
case (BT_HCI_LE_ADV_EVT_TYPE_CONN |
BT_HCI_LE_ADV_EVT_TYPE_SCAN |
BT_HCI_LE_ADV_EVT_TYPE_LEGACY):
return BT_GAP_ADV_TYPE_ADV_IND;
case (BT_HCI_LE_ADV_EVT_TYPE_CONN |
BT_HCI_LE_ADV_EVT_TYPE_DIRECT |
BT_HCI_LE_ADV_EVT_TYPE_LEGACY):
return BT_GAP_ADV_TYPE_ADV_DIRECT_IND;
case (BT_HCI_LE_ADV_EVT_TYPE_SCAN |
BT_HCI_LE_ADV_EVT_TYPE_LEGACY):
return BT_GAP_ADV_TYPE_ADV_SCAN_IND;
case BT_HCI_LE_ADV_EVT_TYPE_LEGACY:
return BT_GAP_ADV_TYPE_ADV_NONCONN_IND;
case (BT_HCI_LE_ADV_EVT_TYPE_SCAN_RSP |
BT_HCI_LE_ADV_EVT_TYPE_CONN |
BT_HCI_LE_ADV_EVT_TYPE_SCAN |
BT_HCI_LE_ADV_EVT_TYPE_LEGACY):
case (BT_HCI_LE_ADV_EVT_TYPE_SCAN_RSP |
BT_HCI_LE_ADV_EVT_TYPE_SCAN |
BT_HCI_LE_ADV_EVT_TYPE_LEGACY):
/* Scan response from connectable or non-connectable advertiser.
*/
return BT_GAP_ADV_TYPE_SCAN_RSP;
default:
return BT_GAP_ADV_TYPE_EXT_ADV;
}
}
/* Convert extended adv report evt_type field to adv props */
static uint16_t get_adv_props_extended(uint16_t evt_type)
{
/* Converts from BT_HCI_LE_ADV_EVT_TYPE_* to BT_GAP_ADV_PROP_*
* The first 4 bits are the same (conn, scan, direct, scan_rsp).
* Bit 4 must be flipped as the meaning of 1 is opposite (legacy -> extended)
* The rest of the bits are zeroed out.
*/
return (evt_type ^ BT_HCI_LE_ADV_EVT_TYPE_LEGACY) & BIT_MASK(5);
}
static void create_ext_adv_info(struct bt_hci_evt_le_ext_advertising_info const *const evt,
struct bt_le_scan_recv_info *const scan_info)
{
scan_info->primary_phy = bt_get_phy(evt->prim_phy);
scan_info->secondary_phy = bt_get_phy(evt->sec_phy);
scan_info->tx_power = evt->tx_power;
scan_info->rssi = evt->rssi;
scan_info->sid = evt->sid;
scan_info->interval = sys_le16_to_cpu(evt->interval);
scan_info->adv_type = get_adv_type(evt->evt_type);
scan_info->adv_props = get_adv_props_extended(evt->evt_type);
}
void bt_hci_le_adv_ext_report(struct net_buf *buf)
{
uint8_t num_reports = net_buf_pull_u8(buf);
BT_DBG("Adv number of reports %u", num_reports);
while (num_reports--) {
struct bt_hci_evt_le_ext_advertising_info *evt;
struct bt_le_scan_recv_info scan_info;
uint16_t data_status;
bool is_report_complete;
bool more_to_come;
bool is_new_advertiser;
if (buf->len < sizeof(*evt)) {
BT_ERR("Unexpected end of buffer");
break;
}
evt = net_buf_pull_mem(buf, sizeof(*evt));
data_status = BT_HCI_LE_ADV_EVT_TYPE_DATA_STATUS(evt->evt_type);
is_report_complete = data_status == BT_HCI_LE_ADV_EVT_TYPE_DATA_STATUS_COMPLETE;
more_to_come = data_status == BT_HCI_LE_ADV_EVT_TYPE_DATA_STATUS_PARTIAL;
if (evt->evt_type & BT_HCI_LE_ADV_EVT_TYPE_LEGACY) {
/* Legacy advertising reports are complete.
* Create event immediately.
*/
create_ext_adv_info(evt, &scan_info);
le_adv_recv(&evt->addr, &scan_info, &buf->b, evt->length);
continue;
}
is_new_advertiser = reassembling_advertiser.state == FRAG_ADV_INACTIVE ||
!fragmented_advertisers_equal(&reassembling_advertiser,
&evt->addr, evt->sid);
if (is_new_advertiser && is_report_complete) {
/* Only advertising report from this advertiser.
* Create event immediately.
*/
create_ext_adv_info(evt, &scan_info);
le_adv_recv(&evt->addr, &scan_info, &buf->b, evt->length);
continue;
}
if (is_new_advertiser && reassembling_advertiser.state == FRAG_ADV_REASSEMBLING) {
BT_WARN("Received an incomplete advertising report while reassembling "
"advertising reports from a different advertiser. The advertising "
"report is discarded and future scan results may be incomplete. "
"Interleaving of fragmented advertising reports from different "
"advertisers is not yet supported.");
(void)net_buf_pull_mem(buf, evt->length);
continue;
}
if (data_status == BT_HCI_LE_ADV_EVT_TYPE_DATA_STATUS_INCOMPLETE) {
/* Controller truncated, no more data will come.
* We do not need to keep track of this advertiser.
* Discard this report.
*/
(void)net_buf_pull_mem(buf, evt->length);
reset_reassembling_advertiser();
continue;
}
if (is_new_advertiser) {
/* We are not reassembling reports from an advertiser and
* this is the first report from the new advertiser.
* Initialize the new advertiser.
*/
__ASSERT_NO_MSG(reassembling_advertiser.state == FRAG_ADV_INACTIVE);
init_reassembling_advertiser(&evt->addr, evt->sid);
}
if (evt->length + ext_scan_buf.len > ext_scan_buf.size) {
/* The report does not fit in the reassemby buffer
* Discard this and future reports from the advertiser.
*/
reassembling_advertiser.state = FRAG_ADV_DISCARDING;
}
if (reassembling_advertiser.state == FRAG_ADV_DISCARDING) {
(void)net_buf_pull_mem(buf, evt->length);
if (!more_to_come) {
/* We do no longer need to keep track of this advertiser as
* all the expected data is received.
*/
reset_reassembling_advertiser();
}
continue;
}
net_buf_simple_add_mem(&ext_scan_buf, buf->data, evt->length);
if (more_to_come) {
/* The controller will send additional reports to be reassembled */
continue;
}
/* No more data coming from the controller.
* Create event.
*/
__ASSERT_NO_MSG(is_report_complete);
create_ext_adv_info(evt, &scan_info);
le_adv_recv(&evt->addr, &scan_info, &ext_scan_buf, ext_scan_buf.len);
/* We do no longer need to keep track of this advertiser. */
reset_reassembling_advertiser();
net_buf_pull(buf, evt->length);
}
}
#if defined(CONFIG_BT_PER_ADV_SYNC)
static void per_adv_sync_delete(struct bt_le_per_adv_sync *per_adv_sync)
{
atomic_clear(per_adv_sync->flags);
}
static struct bt_le_per_adv_sync *per_adv_sync_new(void)
{
struct bt_le_per_adv_sync *per_adv_sync = NULL;
for (int i = 0; i < ARRAY_SIZE(per_adv_sync_pool); i++) {
if (!atomic_test_bit(per_adv_sync_pool[i].flags,
BT_PER_ADV_SYNC_CREATED)) {
per_adv_sync = &per_adv_sync_pool[i];
break;
}
}
if (!per_adv_sync) {
return NULL;
}
(void)memset(per_adv_sync, 0, sizeof(*per_adv_sync));
atomic_set_bit(per_adv_sync->flags, BT_PER_ADV_SYNC_CREATED);
return per_adv_sync;
}
static struct bt_le_per_adv_sync *get_pending_per_adv_sync(void)
{
for (int i = 0; i < ARRAY_SIZE(per_adv_sync_pool); i++) {
if (atomic_test_bit(per_adv_sync_pool[i].flags,
BT_PER_ADV_SYNC_SYNCING)) {
return &per_adv_sync_pool[i];
}
}
return NULL;
}
void bt_periodic_sync_disable(void)
{
for (size_t i = 0; i < ARRAY_SIZE(per_adv_sync_pool); i++) {
per_adv_sync_delete(&per_adv_sync_pool[i]);
}
}
struct bt_le_per_adv_sync *bt_hci_get_per_adv_sync(uint16_t handle)
{
for (int i = 0; i < ARRAY_SIZE(per_adv_sync_pool); i++) {
if (per_adv_sync_pool[i].handle == handle &&
atomic_test_bit(per_adv_sync_pool[i].flags,
BT_PER_ADV_SYNC_SYNCED)) {
return &per_adv_sync_pool[i];
}
}
return NULL;
}
void bt_hci_le_per_adv_report_recv(struct bt_le_per_adv_sync *per_adv_sync,
struct net_buf_simple *buf,
const struct bt_le_per_adv_sync_recv_info *info)
{
struct net_buf_simple_state state;
struct bt_le_per_adv_sync_cb *listener;
SYS_SLIST_FOR_EACH_CONTAINER(&pa_sync_cbs, listener, node) {
if (listener->recv) {
net_buf_simple_save(buf, &state);
listener->recv(per_adv_sync, info, buf);
net_buf_simple_restore(buf, &state);
}
}
}
void bt_hci_le_per_adv_report(struct net_buf *buf)
{
struct bt_hci_evt_le_per_advertising_report *evt;
struct bt_le_per_adv_sync *per_adv_sync;
struct bt_le_per_adv_sync_recv_info info;
if (buf->len < sizeof(*evt)) {
BT_ERR("Unexpected end of buffer");
return;
}
evt = net_buf_pull_mem(buf, sizeof(*evt));
per_adv_sync = bt_hci_get_per_adv_sync(sys_le16_to_cpu(evt->handle));
if (!per_adv_sync) {
BT_ERR("Unknown handle 0x%04X for periodic advertising report",
sys_le16_to_cpu(evt->handle));
return;
}
if (atomic_test_bit(per_adv_sync->flags,
BT_PER_ADV_SYNC_RECV_DISABLED)) {
BT_ERR("Received PA adv report when receive disabled");
return;
}
info.tx_power = evt->tx_power;
info.rssi = evt->rssi;
info.cte_type = BIT(evt->cte_type);
info.addr = &per_adv_sync->addr;
info.sid = per_adv_sync->sid;
if (!per_adv_sync->report_truncated) {
#if CONFIG_BT_PER_ADV_SYNC_BUF_SIZE > 0
if (evt->data_status == BT_HCI_LE_ADV_EVT_TYPE_DATA_STATUS_COMPLETE &&
per_adv_sync->reassembly.len == 0) {
/* We have not received any partial data before.
* This buffer can be forwarded without an extra copy.
*/
bt_hci_le_per_adv_report_recv(per_adv_sync, &buf->b, &info);
} else {
if (net_buf_simple_tailroom(&per_adv_sync->reassembly) < evt->length) {
/* The buffer is too small for the entire report. Drop it */
BT_WARN("Buffer is too small to reassemble the report. "
"Use CONFIG_BT_PER_ADV_SYNC_BUF_SIZE to change "
"the buffer size.");
per_adv_sync->report_truncated = true;
net_buf_simple_reset(&per_adv_sync->reassembly);
return;
}
net_buf_simple_add_mem(&per_adv_sync->reassembly, buf->data, evt->length);
if (evt->data_status == BT_HCI_LE_ADV_EVT_TYPE_DATA_STATUS_COMPLETE) {
bt_hci_le_per_adv_report_recv(per_adv_sync,
&per_adv_sync->reassembly, &info);
net_buf_simple_reset(&per_adv_sync->reassembly);
}
}
#else /* CONFIG_BT_PER_ADV_SYNC_BUF_SIZE > 0 */
if (evt->data_status == BT_HCI_LE_ADV_EVT_TYPE_DATA_STATUS_COMPLETE) {
bt_hci_le_per_adv_report_recv(per_adv_sync, &buf->b, &info);
} else {
per_adv_sync->report_truncated = true;
}
#endif /* CONFIG_BT_PER_ADV_SYNC_BUF_SIZE > 0 */
} else if (evt->data_status == BT_HCI_LE_ADV_EVT_TYPE_DATA_STATUS_COMPLETE) {
per_adv_sync->report_truncated = false;
}
}
static int per_adv_sync_terminate(uint16_t handle)
{
struct bt_hci_cp_le_per_adv_terminate_sync *cp;
struct net_buf *buf;
buf = bt_hci_cmd_create(BT_HCI_OP_LE_PER_ADV_TERMINATE_SYNC,
sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = net_buf_add(buf, sizeof(*cp));
(void)memset(cp, 0, sizeof(*cp));
cp->handle = sys_cpu_to_le16(handle);
return bt_hci_cmd_send_sync(BT_HCI_OP_LE_PER_ADV_TERMINATE_SYNC, buf,
NULL);
}
void bt_hci_le_per_adv_sync_established(struct net_buf *buf)
{
struct bt_hci_evt_le_per_adv_sync_established *evt =
(struct bt_hci_evt_le_per_adv_sync_established *)buf->data;
struct bt_le_per_adv_sync_synced_info sync_info;
struct bt_le_per_adv_sync *pending_per_adv_sync;
struct bt_le_per_adv_sync_cb *listener;
bool unexpected_evt;
int err;
pending_per_adv_sync = get_pending_per_adv_sync();
if (pending_per_adv_sync) {
atomic_clear_bit(pending_per_adv_sync->flags,
BT_PER_ADV_SYNC_SYNCING);
err = bt_le_scan_update(false);
if (err) {
BT_ERR("Could not update scan (%d)", err);
}
}
if (evt->status == BT_HCI_ERR_OP_CANCELLED_BY_HOST) {
/* Cancelled locally, don't call CB */
if (pending_per_adv_sync) {
per_adv_sync_delete(pending_per_adv_sync);
} else {
BT_ERR("Unexpected per adv sync cancelled event");
}
return;
}
if (!pending_per_adv_sync ||
(!atomic_test_bit(pending_per_adv_sync->flags,
BT_PER_ADV_SYNC_SYNCING_USE_LIST) &&
((pending_per_adv_sync->sid != evt->sid) ||
bt_addr_le_cmp(&pending_per_adv_sync->addr, &evt->adv_addr)))) {
BT_ERR("Unexpected per adv sync established event");
/* Request terminate of pending periodic advertising in controller */
per_adv_sync_terminate(sys_le16_to_cpu(evt->handle));
unexpected_evt = true;
} else {
unexpected_evt = false;
}
if (unexpected_evt || evt->status != BT_HCI_ERR_SUCCESS) {
if (pending_per_adv_sync) {
struct bt_le_per_adv_sync_term_info term_info;
/* Terminate the pending PA sync and notify app */
term_info.addr = &evt->adv_addr;
term_info.sid = evt->sid;
term_info.reason = unexpected_evt ? BT_HCI_ERR_UNSPECIFIED : evt->status;
/* Deleting before callback, so the caller will be able
* to restart sync in the callback.
*/
per_adv_sync_delete(pending_per_adv_sync);
SYS_SLIST_FOR_EACH_CONTAINER(&pa_sync_cbs,
listener,
node) {
if (listener->term) {
listener->term(pending_per_adv_sync,
&term_info);
}
}
}
return;
}
pending_per_adv_sync->report_truncated = false;
#if CONFIG_BT_PER_ADV_SYNC_BUF_SIZE > 0
net_buf_simple_init_with_data(&pending_per_adv_sync->reassembly,
pending_per_adv_sync->reassembly_data,
CONFIG_BT_PER_ADV_SYNC_BUF_SIZE);
net_buf_simple_reset(&pending_per_adv_sync->reassembly);
#endif /* CONFIG_BT_PER_ADV_SYNC_BUF_SIZE > 0 */
atomic_set_bit(pending_per_adv_sync->flags, BT_PER_ADV_SYNC_SYNCED);
pending_per_adv_sync->handle = sys_le16_to_cpu(evt->handle);
pending_per_adv_sync->interval = sys_le16_to_cpu(evt->interval);
pending_per_adv_sync->clock_accuracy =
sys_le16_to_cpu(evt->clock_accuracy);
pending_per_adv_sync->phy = evt->phy;
memset(&sync_info, 0, sizeof(sync_info));
sync_info.interval = pending_per_adv_sync->interval;
sync_info.phy = bt_get_phy(pending_per_adv_sync->phy);
if (atomic_test_bit(pending_per_adv_sync->flags,
BT_PER_ADV_SYNC_SYNCING_USE_LIST)) {
/* Now we know which address and SID we synchronized to. */
bt_addr_le_copy(&pending_per_adv_sync->addr, &evt->adv_addr);
pending_per_adv_sync->sid = evt->sid;
/* Translate "enhanced" identity address type to normal one */
if (pending_per_adv_sync->addr.type == BT_ADDR_LE_PUBLIC_ID ||
pending_per_adv_sync->addr.type == BT_ADDR_LE_RANDOM_ID) {
pending_per_adv_sync->addr.type -= BT_ADDR_LE_PUBLIC_ID;
}
}
sync_info.addr = &pending_per_adv_sync->addr;
sync_info.sid = pending_per_adv_sync->sid;
sync_info.recv_enabled =
!atomic_test_bit(pending_per_adv_sync->flags,
BT_PER_ADV_SYNC_RECV_DISABLED);
SYS_SLIST_FOR_EACH_CONTAINER(&pa_sync_cbs, listener, node) {
if (listener->synced) {
listener->synced(pending_per_adv_sync, &sync_info);
}
}
}
void bt_hci_le_per_adv_sync_lost(struct net_buf *buf)
{
struct bt_hci_evt_le_per_adv_sync_lost *evt =
(struct bt_hci_evt_le_per_adv_sync_lost *)buf->data;
struct bt_le_per_adv_sync_term_info term_info;
struct bt_le_per_adv_sync *per_adv_sync;
struct bt_le_per_adv_sync_cb *listener;
per_adv_sync = bt_hci_get_per_adv_sync(sys_le16_to_cpu(evt->handle));
if (!per_adv_sync) {
BT_ERR("Unknown handle 0x%04Xfor periodic adv sync lost",
sys_le16_to_cpu(evt->handle));
return;
}
term_info.addr = &per_adv_sync->addr;
term_info.sid = per_adv_sync->sid;
/* There is no status in the per. adv. sync lost event */
term_info.reason = BT_HCI_ERR_UNSPECIFIED;
/* Deleting before callback, so the caller will be able to restart
* sync in the callback
*/
per_adv_sync_delete(per_adv_sync);
SYS_SLIST_FOR_EACH_CONTAINER(&pa_sync_cbs, listener, node) {
if (listener->term) {
listener->term(per_adv_sync, &term_info);
}
}
}
#if defined(CONFIG_BT_CONN)
void bt_hci_le_past_received(struct net_buf *buf)
{
struct bt_hci_evt_le_past_received *evt =
(struct bt_hci_evt_le_past_received *)buf->data;
struct bt_le_per_adv_sync_synced_info sync_info;
struct bt_le_per_adv_sync_cb *listener;
struct bt_le_per_adv_sync *per_adv_sync;
if (evt->status) {
/* No sync created, don't notify app */
BT_DBG("PAST receive failed with status 0x%02X", evt->status);
return;
}
sync_info.conn = bt_conn_lookup_handle(
sys_le16_to_cpu(evt->conn_handle));
if (!sync_info.conn) {
BT_ERR("Could not lookup connection handle from PAST");
per_adv_sync_terminate(sys_le16_to_cpu(evt->sync_handle));
return;
}
per_adv_sync = per_adv_sync_new();
if (!per_adv_sync) {
BT_WARN("Could not allocate new PA sync from PAST");
per_adv_sync_terminate(sys_le16_to_cpu(evt->sync_handle));
return;
}
atomic_set_bit(per_adv_sync->flags, BT_PER_ADV_SYNC_SYNCED);
per_adv_sync->handle = sys_le16_to_cpu(evt->sync_handle);
per_adv_sync->interval = sys_le16_to_cpu(evt->interval);
per_adv_sync->clock_accuracy = sys_le16_to_cpu(evt->clock_accuracy);
per_adv_sync->phy = evt->phy;
bt_addr_le_copy(&per_adv_sync->addr, &evt->addr);
per_adv_sync->sid = evt->adv_sid;
sync_info.interval = per_adv_sync->interval;
sync_info.phy = bt_get_phy(per_adv_sync->phy);
sync_info.addr = &per_adv_sync->addr;
sync_info.sid = per_adv_sync->sid;
sync_info.service_data = sys_le16_to_cpu(evt->service_data);
SYS_SLIST_FOR_EACH_CONTAINER(&pa_sync_cbs, listener, node) {
if (listener->synced) {
listener->synced(per_adv_sync, &sync_info);
}
}
}
#endif /* CONFIG_BT_CONN */
#if defined(CONFIG_BT_ISO_BROADCAST)
void bt_hci_le_biginfo_adv_report(struct net_buf *buf)
{
struct bt_hci_evt_le_biginfo_adv_report *evt;
struct bt_le_per_adv_sync *per_adv_sync;
struct bt_le_per_adv_sync_cb *listener;
struct bt_iso_biginfo biginfo;
evt = net_buf_pull_mem(buf, sizeof(*evt));
per_adv_sync = bt_hci_get_per_adv_sync(sys_le16_to_cpu(evt->sync_handle));
if (!per_adv_sync) {
BT_ERR("Unknown handle 0x%04X for periodic advertising report",
sys_le16_to_cpu(evt->sync_handle));
return;
}
biginfo.addr = &per_adv_sync->addr;
biginfo.sid = per_adv_sync->sid;
biginfo.num_bis = evt->num_bis;
biginfo.sub_evt_count = evt->nse;
biginfo.iso_interval = sys_le16_to_cpu(evt->iso_interval);
biginfo.burst_number = evt->bn;
biginfo.offset = evt->pto;
biginfo.rep_count = evt->irc;
biginfo.max_pdu = sys_le16_to_cpu(evt->max_pdu);
biginfo.sdu_interval = sys_get_le24(evt->sdu_interval);
biginfo.max_sdu = sys_le16_to_cpu(evt->max_sdu);
biginfo.phy = evt->phy;
biginfo.framing = evt->framing;
biginfo.encryption = evt->encryption ? true : false;
SYS_SLIST_FOR_EACH_CONTAINER(&pa_sync_cbs, listener, node) {
if (listener->biginfo) {
listener->biginfo(per_adv_sync, &biginfo);
}
}
}
#endif /* CONFIG_BT_ISO_BROADCAST */
#if defined(CONFIG_BT_DF_CONNECTIONLESS_CTE_RX)
static void bt_hci_le_df_connectionless_iq_report_common(uint8_t event, struct net_buf *buf)
{
int err;
struct bt_df_per_adv_sync_iq_samples_report cte_report;
struct bt_le_per_adv_sync *per_adv_sync;
struct bt_le_per_adv_sync_cb *listener;
if (event == BT_HCI_EVT_LE_CONNECTIONLESS_IQ_REPORT) {
err = hci_df_prepare_connectionless_iq_report(buf, &cte_report, &per_adv_sync);
if (err) {
BT_ERR("Prepare CTE conn IQ report failed %d", err);
return;
}
} else if (IS_ENABLED(CONFIG_BT_DF_VS_CL_IQ_REPORT_16_BITS_IQ_SAMPLES) &&
event == BT_HCI_EVT_VS_LE_CONNECTIONLESS_IQ_REPORT) {
err = hci_df_vs_prepare_connectionless_iq_report(buf, &cte_report, &per_adv_sync);
if (err) {
BT_ERR("Prepare CTE conn IQ report failed %d", err);
return;
}
} else {
BT_ERR("Unhandled VS connectionless IQ report");
return;
}
SYS_SLIST_FOR_EACH_CONTAINER(&pa_sync_cbs, listener, node) {
if (listener->cte_report_cb) {
listener->cte_report_cb(per_adv_sync, &cte_report);
}
}
}
void bt_hci_le_df_connectionless_iq_report(struct net_buf *buf)
{
bt_hci_le_df_connectionless_iq_report_common(BT_HCI_EVT_LE_CONNECTIONLESS_IQ_REPORT, buf);
}
#if defined(CONFIG_BT_DF_VS_CL_IQ_REPORT_16_BITS_IQ_SAMPLES)
void bt_hci_le_vs_df_connectionless_iq_report(struct net_buf *buf)
{
bt_hci_le_df_connectionless_iq_report_common(BT_HCI_EVT_VS_LE_CONNECTIONLESS_IQ_REPORT,
buf);
}
#endif /* CONFIG_BT_DF_VS_CL_IQ_REPORT_16_BITS_IQ_SAMPLES */
#endif /* CONFIG_BT_DF_CONNECTIONLESS_CTE_RX */
#endif /* defined(CONFIG_BT_PER_ADV_SYNC) */
#endif /* defined(CONFIG_BT_EXT_ADV) */
void bt_hci_le_adv_report(struct net_buf *buf)
{
uint8_t num_reports = net_buf_pull_u8(buf);
struct bt_hci_evt_le_advertising_info *evt;
BT_DBG("Adv number of reports %u", num_reports);
while (num_reports--) {
struct bt_le_scan_recv_info adv_info;
if (buf->len < sizeof(*evt)) {
BT_ERR("Unexpected end of buffer");
break;
}
evt = net_buf_pull_mem(buf, sizeof(*evt));
adv_info.primary_phy = BT_GAP_LE_PHY_1M;
adv_info.secondary_phy = 0;
adv_info.tx_power = BT_GAP_TX_POWER_INVALID;
adv_info.rssi = evt->data[evt->length];
adv_info.sid = BT_GAP_SID_INVALID;
adv_info.interval = 0U;
adv_info.adv_type = evt->evt_type;
adv_info.adv_props = get_adv_props_legacy(evt->evt_type);
le_adv_recv(&evt->addr, &adv_info, &buf->b, evt->length);
net_buf_pull(buf, evt->length + sizeof(adv_info.rssi));
}
}
static bool valid_le_scan_param(const struct bt_le_scan_param *param)
{
if (param->type != BT_HCI_LE_SCAN_PASSIVE &&
param->type != BT_HCI_LE_SCAN_ACTIVE) {
return false;
}
if (param->options & ~(BT_LE_SCAN_OPT_FILTER_DUPLICATE |
BT_LE_SCAN_OPT_FILTER_ACCEPT_LIST |
BT_LE_SCAN_OPT_CODED |
BT_LE_SCAN_OPT_NO_1M)) {
return false;
}
if (param->interval < 0x0004 || param->interval > 0x4000) {
return false;
}
if (param->window < 0x0004 || param->window > 0x4000) {
return false;
}
if (param->window > param->interval) {
return false;
}
return true;
}
int bt_le_scan_start(const struct bt_le_scan_param *param, bt_le_scan_cb_t cb)
{
int err;
if (!atomic_test_bit(bt_dev.flags, BT_DEV_READY)) {
return -EAGAIN;
}
/* Check that the parameters have valid values */
if (!valid_le_scan_param(param)) {
return -EINVAL;
}
if (param->type && !bt_id_scan_random_addr_check()) {
return -EINVAL;
}
/* Return if active scan is already enabled */
if (atomic_test_and_set_bit(bt_dev.flags, BT_DEV_EXPLICIT_SCAN)) {
return -EALREADY;
}
if (atomic_test_bit(bt_dev.flags, BT_DEV_SCANNING)) {
err = bt_le_scan_set_enable(BT_HCI_LE_SCAN_DISABLE);
if (err) {
atomic_clear_bit(bt_dev.flags, BT_DEV_EXPLICIT_SCAN);
return err;
}
}
atomic_set_bit_to(bt_dev.flags, BT_DEV_SCAN_FILTER_DUP,
param->options & BT_LE_SCAN_OPT_FILTER_DUPLICATE);
#if defined(CONFIG_BT_FILTER_ACCEPT_LIST)
atomic_set_bit_to(bt_dev.flags, BT_DEV_SCAN_FILTERED,
param->options & BT_LE_SCAN_OPT_FILTER_ACCEPT_LIST);
#endif /* defined(CONFIG_BT_FILTER_ACCEPT_LIST) */
if (IS_ENABLED(CONFIG_BT_EXT_ADV) &&
BT_DEV_FEAT_LE_EXT_ADV(bt_dev.le.features)) {
struct bt_hci_ext_scan_phy param_1m;
struct bt_hci_ext_scan_phy param_coded;
struct bt_hci_ext_scan_phy *phy_1m = NULL;
struct bt_hci_ext_scan_phy *phy_coded = NULL;
if (!(param->options & BT_LE_SCAN_OPT_NO_1M)) {
param_1m.type = param->type;
param_1m.interval = sys_cpu_to_le16(param->interval);
param_1m.window = sys_cpu_to_le16(param->window);
phy_1m = &param_1m;
}
if (param->options & BT_LE_SCAN_OPT_CODED) {
uint16_t interval = param->interval_coded ?
param->interval_coded :
param->interval;
uint16_t window = param->window_coded ?
param->window_coded :
param->window;
param_coded.type = param->type;
param_coded.interval = sys_cpu_to_le16(interval);
param_coded.window = sys_cpu_to_le16(window);
phy_coded = &param_coded;
}
err = start_le_scan_ext(phy_1m, phy_coded, param->timeout);
} else {
if (param->timeout) {
atomic_clear_bit(bt_dev.flags, BT_DEV_EXPLICIT_SCAN);
return -ENOTSUP;
}
err = start_le_scan_legacy(param->type, param->interval,
param->window);
}
if (err) {
atomic_clear_bit(bt_dev.flags, BT_DEV_EXPLICIT_SCAN);
return err;
}
scan_dev_found_cb = cb;
return 0;
}
int bt_le_scan_stop(void)
{
/* Return if active scanning is already disabled */
if (!atomic_test_and_clear_bit(bt_dev.flags, BT_DEV_EXPLICIT_SCAN)) {
return -EALREADY;
}
bt_scan_reset();
if (IS_ENABLED(CONFIG_BT_EXT_ADV) &&
atomic_test_and_clear_bit(bt_dev.flags, BT_DEV_SCAN_LIMITED)) {
atomic_clear_bit(bt_dev.flags, BT_DEV_RPA_VALID);
#if defined(CONFIG_BT_SMP)
bt_id_pending_keys_update();
#endif
}
return bt_le_scan_update(false);
}
void bt_le_scan_cb_register(struct bt_le_scan_cb *cb)
{
sys_slist_append(&scan_cbs, &cb->node);
}
void bt_le_scan_cb_unregister(struct bt_le_scan_cb *cb)
{
sys_slist_find_and_remove(&scan_cbs, &cb->node);
}
#if defined(CONFIG_BT_PER_ADV_SYNC)
uint8_t bt_le_per_adv_sync_get_index(struct bt_le_per_adv_sync *per_adv_sync)
{
ptrdiff_t index = per_adv_sync - per_adv_sync_pool;
__ASSERT(index >= 0 && ARRAY_SIZE(per_adv_sync_pool) > index,
"Invalid per_adv_sync pointer");
return (uint8_t)index;
}
int bt_le_per_adv_sync_get_info(struct bt_le_per_adv_sync *per_adv_sync,
struct bt_le_per_adv_sync_info *info)
{
CHECKIF(per_adv_sync == NULL || info == NULL) {
return -EINVAL;
}
bt_addr_le_copy(&info->addr, &per_adv_sync->addr);
info->sid = per_adv_sync->sid;
info->phy = per_adv_sync->phy;
info->interval = per_adv_sync->interval;
return 0;
}
struct bt_le_per_adv_sync *bt_le_per_adv_sync_lookup_addr(const bt_addr_le_t *adv_addr,
uint8_t sid)
{
for (int i = 0; i < ARRAY_SIZE(per_adv_sync_pool); i++) {
struct bt_le_per_adv_sync *sync = &per_adv_sync_pool[i];
if (!atomic_test_bit(per_adv_sync_pool[i].flags,
BT_PER_ADV_SYNC_CREATED)) {
continue;
}
if (!bt_addr_le_cmp(&sync->addr, adv_addr) && sync->sid == sid) {
return sync;
}
}
return NULL;
}
int bt_le_per_adv_sync_create(const struct bt_le_per_adv_sync_param *param,
struct bt_le_per_adv_sync **out_sync)
{
struct bt_hci_cp_le_per_adv_create_sync *cp;
struct net_buf *buf;
struct bt_le_per_adv_sync *per_adv_sync;
int err;
if (!BT_FEAT_LE_EXT_PER_ADV(bt_dev.le.features)) {
return -ENOTSUP;
}
if (get_pending_per_adv_sync()) {
return -EBUSY;
}
if (param->sid > BT_GAP_SID_MAX ||
param->skip > BT_GAP_PER_ADV_MAX_SKIP ||
param->timeout > BT_GAP_PER_ADV_MAX_TIMEOUT ||
param->timeout < BT_GAP_PER_ADV_MIN_TIMEOUT) {
return -EINVAL;
}
per_adv_sync = per_adv_sync_new();
if (!per_adv_sync) {
return -ENOMEM;
}
buf = bt_hci_cmd_create(BT_HCI_OP_LE_PER_ADV_CREATE_SYNC, sizeof(*cp));
if (!buf) {
per_adv_sync_delete(per_adv_sync);
return -ENOBUFS;
}
cp = net_buf_add(buf, sizeof(*cp));
(void)memset(cp, 0, sizeof(*cp));
if (param->options & BT_LE_PER_ADV_SYNC_OPT_USE_PER_ADV_LIST) {
atomic_set_bit(per_adv_sync->flags,
BT_PER_ADV_SYNC_SYNCING_USE_LIST);
cp->options |= BT_HCI_LE_PER_ADV_CREATE_SYNC_FP_USE_LIST;
} else {
/* If BT_LE_PER_ADV_SYNC_OPT_USE_PER_ADV_LIST is set, then the
* address and SID are ignored by the controller, so we only
* copy/assign them in case that the periodic advertising list
* is not used.
*/
bt_addr_le_copy(&cp->addr, &param->addr);
cp->sid = param->sid;
}
if (param->options &
BT_LE_PER_ADV_SYNC_OPT_REPORTING_INITIALLY_DISABLED) {
cp->options |=
BT_HCI_LE_PER_ADV_CREATE_SYNC_FP_REPORTS_DISABLED;
atomic_set_bit(per_adv_sync->flags,
BT_PER_ADV_SYNC_RECV_DISABLED);
}
if (param->options & BT_LE_PER_ADV_SYNC_OPT_FILTER_DUPLICATE) {
cp->options |=
BT_HCI_LE_PER_ADV_CREATE_SYNC_FP_FILTER_DUPLICATE;
}
if (param->options & BT_LE_PER_ADV_SYNC_OPT_DONT_SYNC_AOA) {
cp->cte_type |= BT_HCI_LE_PER_ADV_CREATE_SYNC_CTE_TYPE_NO_AOA;
}
if (param->options & BT_LE_PER_ADV_SYNC_OPT_DONT_SYNC_AOD_1US) {
cp->cte_type |=
BT_HCI_LE_PER_ADV_CREATE_SYNC_CTE_TYPE_NO_AOD_1US;
}
if (param->options & BT_LE_PER_ADV_SYNC_OPT_DONT_SYNC_AOD_2US) {
cp->cte_type |=
BT_HCI_LE_PER_ADV_CREATE_SYNC_CTE_TYPE_NO_AOD_2US;
}
if (param->options & BT_LE_PER_ADV_SYNC_OPT_SYNC_ONLY_CONST_TONE_EXT) {
cp->cte_type |= BT_HCI_LE_PER_ADV_CREATE_SYNC_CTE_TYPE_ONLY_CTE;
}
cp->skip = sys_cpu_to_le16(param->skip);
cp->sync_timeout = sys_cpu_to_le16(param->timeout);
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_PER_ADV_CREATE_SYNC, buf, NULL);
if (err) {
per_adv_sync_delete(per_adv_sync);
return err;
}
atomic_set_bit(per_adv_sync->flags, BT_PER_ADV_SYNC_SYNCING);
/* Syncing requires that scan is enabled. If the caller doesn't enable
* scan first, we enable it here, and disable it once the sync has been
* established. We don't need to use any callbacks since we rely on
* the advertiser address in the sync params.
*/
if (!atomic_test_bit(bt_dev.flags, BT_DEV_SCANNING)) {
err = bt_le_scan_update(true);
if (err) {
bt_le_per_adv_sync_delete(per_adv_sync);
return err;
}
}
*out_sync = per_adv_sync;
bt_addr_le_copy(&per_adv_sync->addr, &param->addr);
per_adv_sync->sid = param->sid;
return 0;
}
static int bt_le_per_adv_sync_create_cancel(
struct bt_le_per_adv_sync *per_adv_sync)
{
struct net_buf *buf;
int err;
if (get_pending_per_adv_sync() != per_adv_sync) {
return -EINVAL;
}
buf = bt_hci_cmd_create(BT_HCI_OP_LE_PER_ADV_CREATE_SYNC_CANCEL, 0);
if (!buf) {
return -ENOBUFS;
}
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_PER_ADV_CREATE_SYNC_CANCEL, buf,
NULL);
if (err) {
return err;
}
return 0;
}
static int bt_le_per_adv_sync_terminate(struct bt_le_per_adv_sync *per_adv_sync)
{
int err;
if (!atomic_test_bit(per_adv_sync->flags, BT_PER_ADV_SYNC_SYNCED)) {
return -EINVAL;
}
err = per_adv_sync_terminate(per_adv_sync->handle);
if (err) {
return err;
}
return 0;
}
int bt_le_per_adv_sync_delete(struct bt_le_per_adv_sync *per_adv_sync)
{
int err = 0;
if (!BT_FEAT_LE_EXT_PER_ADV(bt_dev.le.features)) {
return -ENOTSUP;
}
if (atomic_test_bit(per_adv_sync->flags, BT_PER_ADV_SYNC_SYNCED)) {
err = bt_le_per_adv_sync_terminate(per_adv_sync);
if (!err) {
per_adv_sync_delete(per_adv_sync);
}
} else if (get_pending_per_adv_sync() == per_adv_sync) {
err = bt_le_per_adv_sync_create_cancel(per_adv_sync);
/* Delete of the per_adv_sync will be done in the event
* handler when cancelling.
*/
}
return err;
}
void bt_le_per_adv_sync_cb_register(struct bt_le_per_adv_sync_cb *cb)
{
sys_slist_append(&pa_sync_cbs, &cb->node);
}
static int bt_le_set_per_adv_recv_enable(
struct bt_le_per_adv_sync *per_adv_sync, bool enable)
{
struct bt_hci_cp_le_set_per_adv_recv_enable *cp;
struct bt_le_per_adv_sync_cb *listener;
struct bt_le_per_adv_sync_state_info info;
struct net_buf *buf;
struct bt_hci_cmd_state_set state;
int err;
if (!atomic_test_bit(bt_dev.flags, BT_DEV_READY)) {
return -EAGAIN;
}
if (!BT_FEAT_LE_EXT_PER_ADV(bt_dev.le.features)) {
return -ENOTSUP;
}
if (!atomic_test_bit(per_adv_sync->flags, BT_PER_ADV_SYNC_SYNCED)) {
return -EINVAL;
}
if ((enable && !atomic_test_bit(per_adv_sync->flags,
BT_PER_ADV_SYNC_RECV_DISABLED)) ||
(!enable && atomic_test_bit(per_adv_sync->flags,
BT_PER_ADV_SYNC_RECV_DISABLED))) {
return -EALREADY;
}
buf = bt_hci_cmd_create(BT_HCI_OP_LE_SET_PER_ADV_RECV_ENABLE,
sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = net_buf_add(buf, sizeof(*cp));
(void)memset(cp, 0, sizeof(*cp));
cp->handle = sys_cpu_to_le16(per_adv_sync->handle);
cp->enable = enable ? 1 : 0;
bt_hci_cmd_state_set_init(buf, &state, per_adv_sync->flags,
BT_PER_ADV_SYNC_RECV_DISABLED, !enable);
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_SET_PER_ADV_RECV_ENABLE,
buf, NULL);
if (err) {
return err;
}
info.recv_enabled = !atomic_test_bit(per_adv_sync->flags,
BT_PER_ADV_SYNC_RECV_DISABLED);
SYS_SLIST_FOR_EACH_CONTAINER(&pa_sync_cbs, listener, node) {
if (listener->state_changed) {
listener->state_changed(per_adv_sync, &info);
}
}
return 0;
}
int bt_le_per_adv_sync_recv_enable(struct bt_le_per_adv_sync *per_adv_sync)
{
return bt_le_set_per_adv_recv_enable(per_adv_sync, true);
}
int bt_le_per_adv_sync_recv_disable(struct bt_le_per_adv_sync *per_adv_sync)
{
return bt_le_set_per_adv_recv_enable(per_adv_sync, false);
}
#if defined(CONFIG_BT_CONN)
int bt_le_per_adv_sync_transfer(const struct bt_le_per_adv_sync *per_adv_sync,
const struct bt_conn *conn,
uint16_t service_data)
{
struct bt_hci_cp_le_per_adv_sync_transfer *cp;
struct net_buf *buf;
if (!BT_FEAT_LE_EXT_PER_ADV(bt_dev.le.features)) {
return -ENOTSUP;
} else if (!BT_FEAT_LE_PAST_SEND(bt_dev.le.features)) {
return -ENOTSUP;
}
buf = bt_hci_cmd_create(BT_HCI_OP_LE_PER_ADV_SYNC_TRANSFER,
sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = net_buf_add(buf, sizeof(*cp));
(void)memset(cp, 0, sizeof(*cp));
cp->conn_handle = sys_cpu_to_le16(conn->handle);
cp->sync_handle = sys_cpu_to_le16(per_adv_sync->handle);
cp->service_data = sys_cpu_to_le16(service_data);
return bt_hci_cmd_send_sync(BT_HCI_OP_LE_PER_ADV_SYNC_TRANSFER, buf,
NULL);
}
static bool valid_past_param(
const struct bt_le_per_adv_sync_transfer_param *param)
{
if (param->skip > 0x01f3 ||
param->timeout < 0x000A ||
param->timeout > 0x4000) {
return false;
}
return true;
}
static int past_param_set(const struct bt_conn *conn, uint8_t mode,
uint16_t skip, uint16_t timeout, uint8_t cte_type)
{
struct bt_hci_cp_le_past_param *cp;
struct net_buf *buf;
buf = bt_hci_cmd_create(BT_HCI_OP_LE_PAST_PARAM, sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = net_buf_add(buf, sizeof(*cp));
(void)memset(cp, 0, sizeof(*cp));
cp->conn_handle = sys_cpu_to_le16(conn->handle);
cp->mode = mode;
cp->skip = sys_cpu_to_le16(skip);
cp->timeout = sys_cpu_to_le16(timeout);
cp->cte_type = cte_type;
return bt_hci_cmd_send_sync(BT_HCI_OP_LE_PAST_PARAM, buf, NULL);
}
static int default_past_param_set(uint8_t mode, uint16_t skip, uint16_t timeout,
uint8_t cte_type)
{
struct bt_hci_cp_le_default_past_param *cp;
struct net_buf *buf;
buf = bt_hci_cmd_create(BT_HCI_OP_LE_DEFAULT_PAST_PARAM, sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = net_buf_add(buf, sizeof(*cp));
(void)memset(cp, 0, sizeof(*cp));
cp->mode = mode;
cp->skip = sys_cpu_to_le16(skip);
cp->timeout = sys_cpu_to_le16(timeout);
cp->cte_type = cte_type;
return bt_hci_cmd_send_sync(BT_HCI_OP_LE_DEFAULT_PAST_PARAM, buf, NULL);
}
int bt_le_per_adv_sync_transfer_subscribe(
const struct bt_conn *conn,
const struct bt_le_per_adv_sync_transfer_param *param)
{
uint8_t cte_type = 0;
if (!BT_FEAT_LE_EXT_PER_ADV(bt_dev.le.features)) {
return -ENOTSUP;
} else if (!BT_FEAT_LE_PAST_RECV(bt_dev.le.features)) {
return -ENOTSUP;
}
if (!valid_past_param(param)) {
return -EINVAL;
}
if (param->options & BT_LE_PER_ADV_SYNC_TRANSFER_OPT_SYNC_NO_AOA) {
cte_type |= BT_HCI_LE_PAST_CTE_TYPE_NO_AOA;
}
if (param->options & BT_LE_PER_ADV_SYNC_TRANSFER_OPT_SYNC_NO_AOD_1US) {
cte_type |= BT_HCI_LE_PAST_CTE_TYPE_NO_AOD_1US;
}
if (param->options & BT_LE_PER_ADV_SYNC_TRANSFER_OPT_SYNC_NO_AOD_2US) {
cte_type |= BT_HCI_LE_PAST_CTE_TYPE_NO_AOD_2US;
}
if (param->options & BT_LE_PER_ADV_SYNC_TRANSFER_OPT_SYNC_ONLY_CTE) {
cte_type |= BT_HCI_LE_PAST_CTE_TYPE_ONLY_CTE;
}
if (conn) {
return past_param_set(conn, BT_HCI_LE_PAST_MODE_SYNC,
param->skip, param->timeout, cte_type);
} else {
return default_past_param_set(BT_HCI_LE_PAST_MODE_SYNC,
param->skip, param->timeout,
cte_type);
}
}
int bt_le_per_adv_sync_transfer_unsubscribe(const struct bt_conn *conn)
{
if (!BT_FEAT_LE_EXT_PER_ADV(bt_dev.le.features)) {
return -ENOTSUP;
} else if (!BT_FEAT_LE_PAST_RECV(bt_dev.le.features)) {
return -ENOTSUP;
}
if (conn) {
return past_param_set(conn, BT_HCI_LE_PAST_MODE_NO_SYNC, 0,
0x0a, 0);
} else {
return default_past_param_set(BT_HCI_LE_PAST_MODE_NO_SYNC, 0,
0x0a, 0);
}
}
#endif /* CONFIG_BT_CONN */
int bt_le_per_adv_list_add(const bt_addr_le_t *addr, uint8_t sid)
{
struct bt_hci_cp_le_add_dev_to_per_adv_list *cp;
struct net_buf *buf;
int err;
if (!atomic_test_bit(bt_dev.flags, BT_DEV_READY)) {
return -EAGAIN;
}
buf = bt_hci_cmd_create(BT_HCI_OP_LE_ADD_DEV_TO_PER_ADV_LIST,
sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = net_buf_add(buf, sizeof(*cp));
bt_addr_le_copy(&cp->addr, addr);
cp->sid = sid;
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_ADD_DEV_TO_PER_ADV_LIST, buf,
NULL);
if (err) {
BT_ERR("Failed to add device to periodic advertiser list");
return err;
}
return 0;
}
int bt_le_per_adv_list_remove(const bt_addr_le_t *addr, uint8_t sid)
{
struct bt_hci_cp_le_rem_dev_from_per_adv_list *cp;
struct net_buf *buf;
int err;
if (!atomic_test_bit(bt_dev.flags, BT_DEV_READY)) {
return -EAGAIN;
}
buf = bt_hci_cmd_create(BT_HCI_OP_LE_REM_DEV_FROM_PER_ADV_LIST,
sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = net_buf_add(buf, sizeof(*cp));
bt_addr_le_copy(&cp->addr, addr);
cp->sid = sid;
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_REM_DEV_FROM_PER_ADV_LIST, buf,
NULL);
if (err) {
BT_ERR("Failed to remove device from periodic advertiser list");
return err;
}
return 0;
}
int bt_le_per_adv_list_clear(void)
{
int err;
if (!atomic_test_bit(bt_dev.flags, BT_DEV_READY)) {
return -EAGAIN;
}
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_CLEAR_PER_ADV_LIST, NULL, NULL);
if (err) {
BT_ERR("Failed to clear periodic advertiser list");
return err;
}
return 0;
}
#endif /* defined(CONFIG_BT_PER_ADV_SYNC) */