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android / platform / system / bt / b3f12befdc4def7d695b6f1049cd02238eb1e4a8 / . / stack / btm / btm_ble_gap.cc
blob: 37cfeb5926c7940c858ab8cd7d3f99e161a93784 [file] [log] [blame]
/******************************************************************************
*
* Copyright 2008-2014 Broadcom Corporation
*
* Licensed 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.
*
******************************************************************************/
/******************************************************************************
*
* This file contains functions for BLE GAP.
*
******************************************************************************/
#define LOG_TAG "bt_btm_ble"
#include <base/bind.h>
#include <base/callback.h>
#include <base/strings/string_number_conversions.h>
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include <list>
#include <vector>
#include "bt_types.h"
#include "bt_utils.h"
#include "btm_ble_api.h"
#include "btm_int.h"
#include "btu.h"
#include "device/include/controller.h"
#include "gap_api.h"
#include "hcimsgs.h"
#include "osi/include/osi.h"
#include "advertise_data_parser.h"
#include "btm_ble_int.h"
#include "gatt_int.h"
#include "gattdefs.h"
#include "l2c_int.h"
#include "osi/include/log.h"
#include "common/time_util.h"
#include "main/shim/btm_api.h"
#include "main/shim/shim.h"
#define BTM_BLE_NAME_SHORT 0x01
#define BTM_BLE_NAME_CMPL 0x02
#define BTM_BLE_FILTER_TARGET_UNKNOWN 0xff
#define BTM_BLE_POLICY_UNKNOWN 0xff
#define BTM_EXT_BLE_RMT_NAME_TIMEOUT_MS (30 * 1000)
#define MIN_ADV_LENGTH 2
#define BTM_VSC_CHIP_CAPABILITY_RSP_LEN 9
#define BTM_VSC_CHIP_CAPABILITY_RSP_LEN_L_RELEASE \
BTM_VSC_CHIP_CAPABILITY_RSP_LEN
#define BTM_VSC_CHIP_CAPABILITY_RSP_LEN_M_RELEASE 15
namespace {
class AdvertisingCache {
public:
/* Set the data to |data| for device |addr_type, addr| */
const std::vector<uint8_t>& Set(uint8_t addr_type, const RawAddress& addr,
std::vector<uint8_t> data) {
auto it = Find(addr_type, addr);
if (it != items.end()) {
it->data = std::move(data);
return it->data;
}
if (items.size() > cache_max) {
items.pop_back();
}
items.emplace_front(addr_type, addr, std::move(data));
return items.front().data;
}
/* Append |data| for device |addr_type, addr| */
const std::vector<uint8_t>& Append(uint8_t addr_type, const RawAddress& addr,
std::vector<uint8_t> data) {
auto it = Find(addr_type, addr);
if (it != items.end()) {
it->data.insert(it->data.end(), data.begin(), data.end());
return it->data;
}
if (items.size() > cache_max) {
items.pop_back();
}
items.emplace_front(addr_type, addr, std::move(data));
return items.front().data;
}
/* Clear data for device |addr_type, addr| */
void Clear(uint8_t addr_type, const RawAddress& addr) {
auto it = Find(addr_type, addr);
if (it != items.end()) {
items.erase(it);
}
}
private:
struct Item {
uint8_t addr_type;
RawAddress addr;
std::vector<uint8_t> data;
Item(uint8_t addr_type, const RawAddress& addr, std::vector<uint8_t> data)
: addr_type(addr_type), addr(addr), data(data) {}
};
std::list<Item>::iterator Find(uint8_t addr_type, const RawAddress& addr) {
for (auto it = items.begin(); it != items.end(); it++) {
if (it->addr_type == addr_type && it->addr == addr) {
return it;
}
}
return items.end();
}
/* we keep maximum 7 devices in the cache */
const size_t cache_max = 7;
std::list<Item> items;
};
/* Devices in this cache are waiting for eiter scan response, or chained packets
* on secondary channel */
AdvertisingCache cache;
} // namespace
#if (BLE_VND_INCLUDED == TRUE)
static tBTM_BLE_CTRL_FEATURES_CBACK* p_ctrl_le_feature_rd_cmpl_cback = NULL;
#endif
/*******************************************************************************
* Local functions
******************************************************************************/
static void btm_ble_update_adv_flag(uint8_t flag);
void btm_ble_process_adv_pkt_cont(uint16_t evt_type, uint8_t addr_type,
const RawAddress& bda, uint8_t primary_phy,
uint8_t secondary_phy,
uint8_t advertising_sid, int8_t tx_power,
int8_t rssi, uint16_t periodic_adv_int,
uint8_t data_len, uint8_t* data);
static uint8_t btm_set_conn_mode_adv_init_addr(tBTM_BLE_INQ_CB* p_cb,
RawAddress& p_peer_addr_ptr,
tBLE_ADDR_TYPE* p_peer_addr_type,
tBLE_ADDR_TYPE* p_own_addr_type);
static void btm_ble_stop_observe(void);
static void btm_ble_fast_adv_timer_timeout(void* data);
static void btm_ble_start_slow_adv(void);
static void btm_ble_inquiry_timer_gap_limited_discovery_timeout(void* data);
static void btm_ble_inquiry_timer_timeout(void* data);
static void btm_ble_observer_timer_timeout(void* data);
#define BTM_BLE_INQ_RESULT 0x01
#define BTM_BLE_OBS_RESULT 0x02
bool ble_evt_type_is_connectable(uint16_t evt_type) {
return evt_type & (1 << BLE_EVT_CONNECTABLE_BIT);
}
bool ble_evt_type_is_scannable(uint16_t evt_type) {
return evt_type & (1 << BLE_EVT_SCANNABLE_BIT);
}
bool ble_evt_type_is_directed(uint16_t evt_type) {
return evt_type & (1 << BLE_EVT_DIRECTED_BIT);
}
bool ble_evt_type_is_scan_resp(uint16_t evt_type) {
return evt_type & (1 << BLE_EVT_SCAN_RESPONSE_BIT);
}
bool ble_evt_type_is_legacy(uint16_t evt_type) {
return evt_type & (1 << BLE_EVT_LEGACY_BIT);
}
uint8_t ble_evt_type_data_status(uint16_t evt_type) {
return (evt_type >> 5) & 3;
}
constexpr uint8_t UNSUPPORTED = 255;
/* LE states combo bit to check */
const uint8_t btm_le_state_combo_tbl[BTM_BLE_STATE_MAX][BTM_BLE_STATE_MAX] = {
{
/* single state support */
HCI_LE_STATES_CONN_ADV_BIT, /* conn_adv */
HCI_LE_STATES_INIT_BIT, /* init */
HCI_LE_STATES_INIT_BIT, /* master */
HCI_LE_STATES_SLAVE_BIT, /* slave */
UNSUPPORTED, /* todo: lo du dir adv, not covered ? */
HCI_LE_STATES_HI_DUTY_DIR_ADV_BIT, /* hi duty dir adv */
HCI_LE_STATES_NON_CONN_ADV_BIT, /* non connectable adv */
HCI_LE_STATES_PASS_SCAN_BIT, /* passive scan */
HCI_LE_STATES_ACTIVE_SCAN_BIT, /* active scan */
HCI_LE_STATES_SCAN_ADV_BIT /* scanable adv */
},
{
/* conn_adv =0 */
UNSUPPORTED, /* conn_adv */
HCI_LE_STATES_CONN_ADV_INIT_BIT, /* init: 32 */
HCI_LE_STATES_CONN_ADV_MASTER_BIT, /* master: 35 */
HCI_LE_STATES_CONN_ADV_SLAVE_BIT, /* slave: 38,*/
UNSUPPORTED, /* lo du dir adv */
UNSUPPORTED, /* hi duty dir adv */
UNSUPPORTED, /* non connectable adv */
HCI_LE_STATES_CONN_ADV_PASS_SCAN_BIT, /* passive scan */
HCI_LE_STATES_CONN_ADV_ACTIVE_SCAN_BIT, /* active scan */
UNSUPPORTED /* scanable adv */
},
{
/* init */
HCI_LE_STATES_CONN_ADV_INIT_BIT, /* conn_adv: 32 */
UNSUPPORTED, /* init */
HCI_LE_STATES_INIT_MASTER_BIT, /* master 28 */
HCI_LE_STATES_INIT_MASTER_SLAVE_BIT, /* slave 41 */
HCI_LE_STATES_LO_DUTY_DIR_ADV_INIT_BIT, /* lo du dir adv 34 */
HCI_LE_STATES_HI_DUTY_DIR_ADV_INIT_BIT, /* hi duty dir adv 33 */
HCI_LE_STATES_NON_CONN_INIT_BIT, /* non connectable adv */
HCI_LE_STATES_PASS_SCAN_INIT_BIT, /* passive scan */
HCI_LE_STATES_ACTIVE_SCAN_INIT_BIT, /* active scan */
HCI_LE_STATES_SCAN_ADV_INIT_BIT /* scanable adv */
},
{
/* master */
HCI_LE_STATES_CONN_ADV_MASTER_BIT, /* conn_adv: 35 */
HCI_LE_STATES_INIT_MASTER_BIT, /* init 28 */
HCI_LE_STATES_INIT_MASTER_BIT, /* master 28 */
HCI_LE_STATES_CONN_ADV_INIT_BIT, /* slave: 32 */
HCI_LE_STATES_LO_DUTY_DIR_ADV_MASTER_BIT, /* lo duty cycle adv 37 */
HCI_LE_STATES_HI_DUTY_DIR_ADV_MASTER_BIT, /* hi duty cycle adv 36 */
HCI_LE_STATES_NON_CONN_ADV_MASTER_BIT, /* non connectable adv*/
HCI_LE_STATES_PASS_SCAN_MASTER_BIT, /* passive scan */
HCI_LE_STATES_ACTIVE_SCAN_MASTER_BIT, /* active scan */
HCI_LE_STATES_SCAN_ADV_MASTER_BIT /* scanable adv */
},
{
/* slave */
HCI_LE_STATES_CONN_ADV_SLAVE_BIT, /* conn_adv: 38,*/
HCI_LE_STATES_INIT_MASTER_SLAVE_BIT, /* init 41 */
HCI_LE_STATES_INIT_MASTER_SLAVE_BIT, /* master 41 */
HCI_LE_STATES_CONN_ADV_SLAVE_BIT, /* slave: 38,*/
HCI_LE_STATES_LO_DUTY_DIR_ADV_SLAVE_BIT, /* lo duty cycle adv 40 */
HCI_LE_STATES_HI_DUTY_DIR_ADV_SLAVE_BIT, /* hi duty cycle adv 39 */
HCI_LE_STATES_NON_CONN_ADV_SLAVE_BIT, /* non connectable adv */
HCI_LE_STATES_PASS_SCAN_SLAVE_BIT, /* passive scan */
HCI_LE_STATES_ACTIVE_SCAN_SLAVE_BIT, /* active scan */
HCI_LE_STATES_SCAN_ADV_SLAVE_BIT /* scanable adv */
},
{
/* lo duty cycle adv */
UNSUPPORTED, /* conn_adv: 38,*/
HCI_LE_STATES_LO_DUTY_DIR_ADV_INIT_BIT, /* init 34 */
HCI_LE_STATES_LO_DUTY_DIR_ADV_MASTER_BIT, /* master 37 */
HCI_LE_STATES_LO_DUTY_DIR_ADV_SLAVE_BIT, /* slave: 40 */
UNSUPPORTED, /* lo duty cycle adv 40 */
UNSUPPORTED, /* hi duty cycle adv 39 */
UNSUPPORTED, /* non connectable adv */
UNSUPPORTED, /* TODO: passive scan, not covered? */
UNSUPPORTED, /* TODO: active scan, not covered? */
UNSUPPORTED /* scanable adv */
},
{
/* hi duty cycle adv */
UNSUPPORTED, /* conn_adv: 38,*/
HCI_LE_STATES_HI_DUTY_DIR_ADV_INIT_BIT, /* init 33 */
HCI_LE_STATES_HI_DUTY_DIR_ADV_MASTER_BIT, /* master 36 */
HCI_LE_STATES_HI_DUTY_DIR_ADV_SLAVE_BIT, /* slave: 39*/
UNSUPPORTED, /* lo duty cycle adv 40 */
UNSUPPORTED, /* hi duty cycle adv 39 */
UNSUPPORTED, /* non connectable adv */
HCI_LE_STATES_HI_DUTY_DIR_ADV_PASS_SCAN_BIT, /* passive scan */
HCI_LE_STATES_HI_DUTY_DIR_ADV_ACTIVE_SCAN_BIT, /* active scan */
UNSUPPORTED /* scanable adv */
},
{
/* non connectable adv */
UNSUPPORTED, /* conn_adv: */
HCI_LE_STATES_NON_CONN_INIT_BIT, /* init */
HCI_LE_STATES_NON_CONN_ADV_MASTER_BIT, /* master */
HCI_LE_STATES_NON_CONN_ADV_SLAVE_BIT, /* slave: */
UNSUPPORTED, /* lo duty cycle adv */
UNSUPPORTED, /* hi duty cycle adv */
UNSUPPORTED, /* non connectable adv */
HCI_LE_STATES_NON_CONN_ADV_PASS_SCAN_BIT, /* passive scan */
HCI_LE_STATES_NON_CONN_ADV_ACTIVE_SCAN_BIT, /* active scan */
UNSUPPORTED /* scanable adv */
},
{
/* passive scan */
HCI_LE_STATES_CONN_ADV_PASS_SCAN_BIT, /* conn_adv: */
HCI_LE_STATES_PASS_SCAN_INIT_BIT, /* init */
HCI_LE_STATES_PASS_SCAN_MASTER_BIT, /* master */
HCI_LE_STATES_PASS_SCAN_SLAVE_BIT, /* slave: */
UNSUPPORTED, /* lo duty cycle adv */
HCI_LE_STATES_HI_DUTY_DIR_ADV_PASS_SCAN_BIT, /* hi duty cycle adv */
HCI_LE_STATES_NON_CONN_ADV_PASS_SCAN_BIT, /* non connectable adv */
UNSUPPORTED, /* passive scan */
UNSUPPORTED, /* active scan */
HCI_LE_STATES_SCAN_ADV_PASS_SCAN_BIT /* scanable adv */
},
{
/* active scan */
HCI_LE_STATES_CONN_ADV_ACTIVE_SCAN_BIT, /* conn_adv: */
HCI_LE_STATES_ACTIVE_SCAN_INIT_BIT, /* init */
HCI_LE_STATES_ACTIVE_SCAN_MASTER_BIT, /* master */
HCI_LE_STATES_ACTIVE_SCAN_SLAVE_BIT, /* slave: */
UNSUPPORTED, /* lo duty cycle adv */
HCI_LE_STATES_HI_DUTY_DIR_ADV_ACTIVE_SCAN_BIT, /* hi duty cycle adv */
HCI_LE_STATES_NON_CONN_ADV_ACTIVE_SCAN_BIT, /* non connectable adv */
UNSUPPORTED, /* TODO: passive scan */
UNSUPPORTED, /* TODO: active scan */
HCI_LE_STATES_SCAN_ADV_ACTIVE_SCAN_BIT /* scanable adv */
},
{
/* scanable adv */
UNSUPPORTED, /* conn_adv: */
HCI_LE_STATES_SCAN_ADV_INIT_BIT, /* init */
HCI_LE_STATES_SCAN_ADV_MASTER_BIT, /* master */
HCI_LE_STATES_SCAN_ADV_SLAVE_BIT, /* slave: */
UNSUPPORTED, /* lo duty cycle adv */
UNSUPPORTED, /* hi duty cycle adv */
UNSUPPORTED, /* non connectable adv */
HCI_LE_STATES_SCAN_ADV_PASS_SCAN_BIT, /* passive scan */
HCI_LE_STATES_SCAN_ADV_ACTIVE_SCAN_BIT, /* active scan */
UNSUPPORTED /* scanable adv */
}};
/* check LE combo state supported */
inline bool BTM_LE_STATES_SUPPORTED(const uint8_t* x, uint8_t bit_num) {
uint8_t mask = 1 << (bit_num % 8);
uint8_t offset = bit_num / 8;
return ((x)[offset] & mask);
}
/*******************************************************************************
*
* Function BTM_BleUpdateAdvFilterPolicy
*
* Description This function update the filter policy of advertiser.
*
* Parameter adv_policy: advertising filter policy
*
* Return void
******************************************************************************/
void BTM_BleUpdateAdvFilterPolicy(tBTM_BLE_AFP adv_policy) {
if (bluetooth::shim::is_gd_shim_enabled()) {
return bluetooth::shim::BTM_BleUpdateAdvFilterPolicy(adv_policy);
}
tBTM_BLE_INQ_CB* p_cb = &btm_cb.ble_ctr_cb.inq_var;
tBLE_ADDR_TYPE init_addr_type = BLE_ADDR_PUBLIC;
RawAddress adv_address = RawAddress::kEmpty;
uint8_t adv_mode = p_cb->adv_mode;
BTM_TRACE_EVENT("BTM_BleUpdateAdvFilterPolicy");
if (!controller_get_interface()->supports_ble()) return;
if (p_cb->afp != adv_policy) {
p_cb->afp = adv_policy;
/* if adv active, stop and restart */
btm_ble_stop_adv();
if (p_cb->connectable_mode & BTM_BLE_CONNECTABLE)
p_cb->evt_type = btm_set_conn_mode_adv_init_addr(
p_cb, adv_address, &init_addr_type, &p_cb->adv_addr_type);
btsnd_hcic_ble_write_adv_params(
(uint16_t)(p_cb->adv_interval_min ? p_cb->adv_interval_min
: BTM_BLE_GAP_ADV_SLOW_INT),
(uint16_t)(p_cb->adv_interval_max ? p_cb->adv_interval_max
: BTM_BLE_GAP_ADV_SLOW_INT),
p_cb->evt_type, p_cb->adv_addr_type, init_addr_type, adv_address,
p_cb->adv_chnl_map, p_cb->afp);
if (adv_mode == BTM_BLE_ADV_ENABLE) btm_ble_start_adv();
}
}
/*******************************************************************************
*
* Function BTM_BleObserve
*
* Description This procedure keep the device listening for advertising
* events from a broadcast device.
*
* Parameters start: start or stop observe.
* white_list: use white list in observer mode or not.
*
* Returns void
*
******************************************************************************/
tBTM_STATUS BTM_BleObserve(bool start, uint8_t duration,
tBTM_INQ_RESULTS_CB* p_results_cb,
tBTM_CMPL_CB* p_cmpl_cb) {
if (bluetooth::shim::is_gd_shim_enabled()) {
return bluetooth::shim::BTM_BleObserve(start, duration, p_results_cb,
p_cmpl_cb);
}
tBTM_BLE_INQ_CB* p_inq = &btm_cb.ble_ctr_cb.inq_var;
tBTM_STATUS status = BTM_WRONG_MODE;
uint32_t scan_interval =
!p_inq->scan_interval ? BTM_BLE_GAP_DISC_SCAN_INT : p_inq->scan_interval;
uint32_t scan_window =
!p_inq->scan_window ? BTM_BLE_GAP_DISC_SCAN_WIN : p_inq->scan_window;
BTM_TRACE_EVENT("%s : scan_type:%d, %d, %d", __func__,
btm_cb.btm_inq_vars.scan_type, p_inq->scan_interval,
p_inq->scan_window);
if (!controller_get_interface()->supports_ble()) return BTM_ILLEGAL_VALUE;
if (start) {
/* shared inquiry database, do not allow observe if any inquiry is active */
if (BTM_BLE_IS_OBS_ACTIVE(btm_cb.ble_ctr_cb.scan_activity)) {
BTM_TRACE_ERROR("%s Observe Already Active", __func__);
return status;
}
btm_cb.ble_ctr_cb.p_obs_results_cb = p_results_cb;
btm_cb.ble_ctr_cb.p_obs_cmpl_cb = p_cmpl_cb;
status = BTM_CMD_STARTED;
/* scan is not started */
if (!BTM_BLE_IS_SCAN_ACTIVE(btm_cb.ble_ctr_cb.scan_activity)) {
/* allow config of scan type */
p_inq->scan_type = (p_inq->scan_type == BTM_BLE_SCAN_MODE_NONE)
? BTM_BLE_SCAN_MODE_ACTI
: p_inq->scan_type;
/* assume observe always not using white list */
#if (defined BLE_PRIVACY_SPT && BLE_PRIVACY_SPT == TRUE)
/* enable resolving list */
btm_ble_enable_resolving_list_for_platform(BTM_BLE_RL_SCAN);
#endif
btm_send_hci_set_scan_params(
p_inq->scan_type, (uint16_t)scan_interval, (uint16_t)scan_window,
btm_cb.ble_ctr_cb.addr_mgnt_cb.own_addr_type, BTM_BLE_DEFAULT_SFP);
p_inq->scan_duplicate_filter = BTM_BLE_DUPLICATE_DISABLE;
status = btm_ble_start_scan();
}
if (status == BTM_CMD_STARTED) {
btm_cb.ble_ctr_cb.scan_activity |= BTM_LE_OBSERVE_ACTIVE;
if (duration != 0) {
/* start observer timer */
uint64_t duration_ms = duration * 1000;
alarm_set_on_mloop(btm_cb.ble_ctr_cb.observer_timer, duration_ms,
btm_ble_observer_timer_timeout, NULL);
}
}
} else if (BTM_BLE_IS_OBS_ACTIVE(btm_cb.ble_ctr_cb.scan_activity)) {
status = BTM_CMD_STARTED;
btm_ble_stop_observe();
} else {
BTM_TRACE_ERROR("%s Observe not active", __func__);
}
return status;
}
#if (BLE_VND_INCLUDED == TRUE)
/*******************************************************************************
*
* Function btm_vsc_brcm_features_complete
*
* Description Command Complete callback for HCI_BLE_VENDOR_CAP
*
* Returns void
*
******************************************************************************/
static void btm_ble_vendor_capability_vsc_cmpl_cback(
tBTM_VSC_CMPL* p_vcs_cplt_params) {
uint8_t status = 0xFF;
uint8_t* p;
BTM_TRACE_DEBUG("%s", __func__);
/* Check status of command complete event */
CHECK(p_vcs_cplt_params->opcode == HCI_BLE_VENDOR_CAP);
CHECK(p_vcs_cplt_params->param_len > 0);
p = p_vcs_cplt_params->p_param_buf;
STREAM_TO_UINT8(status, p);
if (status != HCI_SUCCESS) {
BTM_TRACE_DEBUG("%s: Status = 0x%02x (0 is success)", __func__, status);
return;
}
CHECK(p_vcs_cplt_params->param_len >= BTM_VSC_CHIP_CAPABILITY_RSP_LEN);
STREAM_TO_UINT8(btm_cb.cmn_ble_vsc_cb.adv_inst_max, p);
STREAM_TO_UINT8(btm_cb.cmn_ble_vsc_cb.rpa_offloading, p);
STREAM_TO_UINT16(btm_cb.cmn_ble_vsc_cb.tot_scan_results_strg, p);
STREAM_TO_UINT8(btm_cb.cmn_ble_vsc_cb.max_irk_list_sz, p);
STREAM_TO_UINT8(btm_cb.cmn_ble_vsc_cb.filter_support, p);
STREAM_TO_UINT8(btm_cb.cmn_ble_vsc_cb.max_filter, p);
STREAM_TO_UINT8(btm_cb.cmn_ble_vsc_cb.energy_support, p);
if (p_vcs_cplt_params->param_len >
BTM_VSC_CHIP_CAPABILITY_RSP_LEN_L_RELEASE) {
STREAM_TO_UINT16(btm_cb.cmn_ble_vsc_cb.version_supported, p);
} else {
btm_cb.cmn_ble_vsc_cb.version_supported = BTM_VSC_CHIP_CAPABILITY_L_VERSION;
}
if (btm_cb.cmn_ble_vsc_cb.version_supported >=
BTM_VSC_CHIP_CAPABILITY_M_VERSION) {
CHECK(p_vcs_cplt_params->param_len >= BTM_VSC_CHIP_CAPABILITY_RSP_LEN_M_RELEASE);
STREAM_TO_UINT16(btm_cb.cmn_ble_vsc_cb.total_trackable_advertisers, p);
STREAM_TO_UINT8(btm_cb.cmn_ble_vsc_cb.extended_scan_support, p);
STREAM_TO_UINT8(btm_cb.cmn_ble_vsc_cb.debug_logging_supported, p);
}
btm_cb.cmn_ble_vsc_cb.values_read = true;
BTM_TRACE_DEBUG(
"%s: stat=%d, irk=%d, ADV ins:%d, rpa=%d, ener=%d, ext_scan=%d", __func__,
status, btm_cb.cmn_ble_vsc_cb.max_irk_list_sz,
btm_cb.cmn_ble_vsc_cb.adv_inst_max, btm_cb.cmn_ble_vsc_cb.rpa_offloading,
btm_cb.cmn_ble_vsc_cb.energy_support,
btm_cb.cmn_ble_vsc_cb.extended_scan_support);
btm_ble_adv_init();
if (btm_cb.cmn_ble_vsc_cb.max_filter > 0) btm_ble_adv_filter_init();
#if (BLE_PRIVACY_SPT == TRUE)
/* VS capability included and non-4.2 device */
if (btm_cb.cmn_ble_vsc_cb.max_irk_list_sz > 0 &&
controller_get_interface()->get_ble_resolving_list_max_size() == 0)
btm_ble_resolving_list_init(btm_cb.cmn_ble_vsc_cb.max_irk_list_sz);
#endif /* (BLE_PRIVACY_SPT == TRUE) */
if (btm_cb.cmn_ble_vsc_cb.tot_scan_results_strg > 0) btm_ble_batchscan_init();
if (p_ctrl_le_feature_rd_cmpl_cback != NULL)
p_ctrl_le_feature_rd_cmpl_cback(status);
}
#endif /* (BLE_VND_INCLUDED == TRUE) */
/*******************************************************************************
*
* Function BTM_BleGetVendorCapabilities
*
* Description This function reads local LE features
*
* Parameters p_cmn_vsc_cb : Locala LE capability structure
*
* Returns void
*
******************************************************************************/
extern void BTM_BleGetVendorCapabilities(tBTM_BLE_VSC_CB* p_cmn_vsc_cb) {
BTM_TRACE_DEBUG("BTM_BleGetVendorCapabilities");
if (NULL != p_cmn_vsc_cb) {
*p_cmn_vsc_cb = btm_cb.cmn_ble_vsc_cb;
}
}
/******************************************************************************
*
* Function BTM_BleReadControllerFeatures
*
* Description Reads BLE specific controller features
*
* Parameters: tBTM_BLE_CTRL_FEATURES_CBACK : Callback to notify when
* features are read
*
* Returns void
*
******************************************************************************/
#if (BLE_VND_INCLUDED == TRUE)
extern void BTM_BleReadControllerFeatures(
tBTM_BLE_CTRL_FEATURES_CBACK* p_vsc_cback) {
if (btm_cb.cmn_ble_vsc_cb.values_read) return;
BTM_TRACE_DEBUG("BTM_BleReadControllerFeatures");
p_ctrl_le_feature_rd_cmpl_cback = p_vsc_cback;
BTM_VendorSpecificCommand(HCI_BLE_VENDOR_CAP, 0, NULL,
btm_ble_vendor_capability_vsc_cmpl_cback);
}
#else
extern void BTM_BleReadControllerFeatures(
UNUSED_ATTR tBTM_BLE_CTRL_FEATURES_CBACK* p_vsc_cback) {}
#endif
/*******************************************************************************
*
* Function BTM_BleEnableMixedPrivacyMode
*
* Description This function is called to enabled Mixed mode if privacy 1.2
* is applicable in controller.
*
* Parameters mixed_on: mixed mode to be used or not.
*
* Returns void
*
******************************************************************************/
void BTM_BleEnableMixedPrivacyMode(bool mixed_on) {
#if (BLE_PRIVACY_SPT == TRUE)
btm_cb.ble_ctr_cb.mixed_mode = mixed_on;
/* TODO: send VSC to enabled mixed mode */
#endif
}
/*******************************************************************************
*
* Function BTM_BleConfigPrivacy
*
* Description This function is called to enable or disable the privacy in
* LE channel of the local device.
*
* Parameters privacy_mode: privacy mode on or off.
*
* Returns bool privacy mode set success; otherwise failed.
*
******************************************************************************/
bool BTM_BleConfigPrivacy(bool privacy_mode) {
#if (BLE_PRIVACY_SPT == TRUE)
tBTM_BLE_CB* p_cb = &btm_cb.ble_ctr_cb;
BTM_TRACE_EVENT("%s", __func__);
/* if LE is not supported, return error */
if (!controller_get_interface()->supports_ble()) return false;
tGAP_BLE_ATTR_VALUE gap_ble_attr_value;
gap_ble_attr_value.addr_resolution = 0;
if (!privacy_mode) /* if privacy disabled, always use public address */
{
p_cb->addr_mgnt_cb.own_addr_type = BLE_ADDR_PUBLIC;
p_cb->privacy_mode = BTM_PRIVACY_NONE;
} else /* privacy is turned on*/
{
/* always set host random address, used when privacy 1.1 or priavcy 1.2 is
* disabled */
p_cb->addr_mgnt_cb.own_addr_type = BLE_ADDR_RANDOM;
btm_gen_resolvable_private_addr(base::Bind(&btm_gen_resolve_paddr_low));
/* 4.2 controller only allow privacy 1.2 or mixed mode, resolvable private
* address in controller */
if (controller_get_interface()->supports_ble_privacy()) {
gap_ble_attr_value.addr_resolution = 1;
/* check vendor specific capability */
p_cb->privacy_mode =
btm_cb.ble_ctr_cb.mixed_mode ? BTM_PRIVACY_MIXED : BTM_PRIVACY_1_2;
} else /* 4.1/4.0 controller */
p_cb->privacy_mode = BTM_PRIVACY_1_1;
}
GAP_BleAttrDBUpdate(GATT_UUID_GAP_CENTRAL_ADDR_RESOL, &gap_ble_attr_value);
return true;
#else
return false;
#endif
}
/*******************************************************************************
*
* Function BTM_BleMaxMultiAdvInstanceCount
*
* Description Returns max number of multi adv instances supported by
* controller
*
* Returns Max multi adv instance count
*
******************************************************************************/
extern uint8_t BTM_BleMaxMultiAdvInstanceCount(void) {
if (bluetooth::shim::is_gd_shim_enabled()) {
return bluetooth::shim::BTM_BleMaxMultiAdvInstanceCount();
}
return btm_cb.cmn_ble_vsc_cb.adv_inst_max < BTM_BLE_MULTI_ADV_MAX
? btm_cb.cmn_ble_vsc_cb.adv_inst_max
: BTM_BLE_MULTI_ADV_MAX;
}
/*******************************************************************************
*
* Function BTM_BleLocalPrivacyEnabled
*
* Description Checks if local device supports private address
*
* Returns Return true if local privacy is enabled else false
*
******************************************************************************/
bool BTM_BleLocalPrivacyEnabled(void) {
#if (BLE_PRIVACY_SPT == TRUE)
if (bluetooth::shim::is_gd_shim_enabled()) {
return bluetooth::shim::BTM_BleLocalPrivacyEnabled();
}
return (btm_cb.ble_ctr_cb.privacy_mode != BTM_PRIVACY_NONE);
#else
return false;
#endif
}
/*******************************************************************************
*
* Function BTM_BleSetConnectableMode
*
* Description This function is called to set BLE connectable mode for a
* peripheral device.
*
* Parameters conn_mode: directed connectable mode, or non-directed. It
* can be BTM_BLE_CONNECT_EVT,
* BTM_BLE_CONNECT_DIR_EVT or
* BTM_BLE_CONNECT_LO_DUTY_DIR_EVT
*
* Returns BTM_ILLEGAL_VALUE if controller does not support BLE.
* BTM_SUCCESS is status set successfully; otherwise failure.
*
******************************************************************************/
tBTM_STATUS BTM_BleSetConnectableMode(tBTM_BLE_CONN_MODE connectable_mode) {
tBTM_BLE_INQ_CB* p_cb = &btm_cb.ble_ctr_cb.inq_var;
BTM_TRACE_EVENT("%s connectable_mode = %d ", __func__, connectable_mode);
if (!controller_get_interface()->supports_ble()) return BTM_ILLEGAL_VALUE;
p_cb->directed_conn = connectable_mode;
return btm_ble_set_connectability(p_cb->connectable_mode);
}
#if (BLE_PRIVACY_SPT == TRUE)
static bool is_resolving_list_bit_set(void* data, void* context) {
tBTM_SEC_DEV_REC* p_dev_rec = static_cast<tBTM_SEC_DEV_REC*>(data);
if ((p_dev_rec->ble.in_controller_list & BTM_RESOLVING_LIST_BIT) != 0)
return false;
return true;
}
#endif
/*******************************************************************************
*
* Function btm_set_conn_mode_adv_init_addr
*
* Description set initator address type and local address type based on
* adv mode.
*
*
******************************************************************************/
static uint8_t btm_set_conn_mode_adv_init_addr(
tBTM_BLE_INQ_CB* p_cb, RawAddress& p_peer_addr_ptr,
tBLE_ADDR_TYPE* p_peer_addr_type, tBLE_ADDR_TYPE* p_own_addr_type) {
uint8_t evt_type;
#if (BLE_PRIVACY_SPT == TRUE)
tBTM_SEC_DEV_REC* p_dev_rec;
#endif
evt_type =
(p_cb->connectable_mode == BTM_BLE_NON_CONNECTABLE)
? ((p_cb->scan_rsp) ? BTM_BLE_DISCOVER_EVT : BTM_BLE_NON_CONNECT_EVT)
: BTM_BLE_CONNECT_EVT;
if (evt_type == BTM_BLE_CONNECT_EVT) {
evt_type = p_cb->directed_conn;
if (p_cb->directed_conn == BTM_BLE_CONNECT_DIR_EVT ||
p_cb->directed_conn == BTM_BLE_CONNECT_LO_DUTY_DIR_EVT) {
#if (BLE_PRIVACY_SPT == TRUE)
/* for privacy 1.2, convert peer address as static, own address set as ID
* addr */
if (btm_cb.ble_ctr_cb.privacy_mode == BTM_PRIVACY_1_2 ||
btm_cb.ble_ctr_cb.privacy_mode == BTM_PRIVACY_MIXED) {
/* only do so for bonded device */
if ((p_dev_rec = btm_find_or_alloc_dev(p_cb->direct_bda.bda)) != NULL &&
p_dev_rec->ble.in_controller_list & BTM_RESOLVING_LIST_BIT) {
btm_ble_enable_resolving_list(BTM_BLE_RL_ADV);
p_peer_addr_ptr = p_dev_rec->ble.identity_addr;
*p_peer_addr_type = p_dev_rec->ble.identity_addr_type;
*p_own_addr_type = BLE_ADDR_RANDOM_ID;
return evt_type;
}
/* otherwise fall though as normal directed adv */
else {
btm_ble_disable_resolving_list(BTM_BLE_RL_ADV, true);
}
}
#endif
/* direct adv mode does not have privacy, if privacy is not enabled */
*p_peer_addr_type = p_cb->direct_bda.type;
p_peer_addr_ptr = p_cb->direct_bda.bda;
return evt_type;
}
}
/* undirect adv mode or non-connectable mode*/
#if (BLE_PRIVACY_SPT == TRUE)
/* when privacy 1.2 privacy only mode is used, or mixed mode */
if ((btm_cb.ble_ctr_cb.privacy_mode == BTM_PRIVACY_1_2 &&
p_cb->afp != AP_SCAN_CONN_ALL) ||
btm_cb.ble_ctr_cb.privacy_mode == BTM_PRIVACY_MIXED) {
list_node_t* n =
list_foreach(btm_cb.sec_dev_rec, is_resolving_list_bit_set, NULL);
if (n) {
/* if enhanced privacy is required, set Identity address and matching IRK
* peer */
tBTM_SEC_DEV_REC* p_dev_rec =
static_cast<tBTM_SEC_DEV_REC*>(list_node(n));
p_peer_addr_ptr = p_dev_rec->ble.identity_addr;
*p_peer_addr_type = p_dev_rec->ble.identity_addr_type;
*p_own_addr_type = BLE_ADDR_RANDOM_ID;
} else {
/* resolving list is empty, not enabled */
*p_own_addr_type = BLE_ADDR_RANDOM;
}
}
/* privacy 1.1, or privacy 1.2, general discoverable/connectable mode, disable
privacy in */
/* controller fall back to host based privacy */
else if (btm_cb.ble_ctr_cb.privacy_mode != BTM_PRIVACY_NONE) {
*p_own_addr_type = BLE_ADDR_RANDOM;
}
#endif
/* if no privacy,do not set any peer address,*/
/* local address type go by global privacy setting */
return evt_type;
}
/**
* This function is called to set scan parameters. |cb| is called with operation
* status
**/
void BTM_BleSetScanParams(uint32_t scan_interval, uint32_t scan_window,
tBLE_SCAN_MODE scan_mode,
base::Callback<void(uint8_t)> cb) {
tBTM_BLE_INQ_CB* p_cb = &btm_cb.ble_ctr_cb.inq_var;
uint32_t max_scan_interval;
uint32_t max_scan_window;
BTM_TRACE_EVENT("%s", __func__);
if (!controller_get_interface()->supports_ble()) return;
/* If not supporting extended scan support, use the older range for checking
*/
if (btm_cb.cmn_ble_vsc_cb.extended_scan_support == 0) {
max_scan_interval = BTM_BLE_SCAN_INT_MAX;
max_scan_window = BTM_BLE_SCAN_WIN_MAX;
} else {
/* If supporting extended scan support, use the new extended range for
* checking */
max_scan_interval = BTM_BLE_EXT_SCAN_INT_MAX;
max_scan_window = BTM_BLE_EXT_SCAN_WIN_MAX;
}
if (BTM_BLE_ISVALID_PARAM(scan_interval, BTM_BLE_SCAN_INT_MIN,
max_scan_interval) &&
BTM_BLE_ISVALID_PARAM(scan_window, BTM_BLE_SCAN_WIN_MIN,
max_scan_window) &&
(scan_mode == BTM_BLE_SCAN_MODE_ACTI ||
scan_mode == BTM_BLE_SCAN_MODE_PASS)) {
p_cb->scan_type = scan_mode;
p_cb->scan_interval = scan_interval;
p_cb->scan_window = scan_window;
cb.Run(BTM_SUCCESS);
} else {
cb.Run(BTM_ILLEGAL_VALUE);
BTM_TRACE_ERROR("Illegal params: scan_interval = %d scan_window = %d",
scan_interval, scan_window);
}
}
/*******************************************************************************
*
* Function BTM_BleWriteScanRsp
*
* Description This function is called to write LE scan response.
*
* Parameters: p_scan_rsp: scan response information.
*
* Returns void
*
******************************************************************************/
void BTM_BleWriteScanRsp(uint8_t* data, uint8_t length,
tBTM_BLE_ADV_DATA_CMPL_CBACK* p_adv_data_cback) {
BTM_TRACE_EVENT("%s: length: %d", __func__, length);
if (!controller_get_interface()->supports_ble()) {
p_adv_data_cback(BTM_ILLEGAL_VALUE);
return;
}
btsnd_hcic_ble_set_scan_rsp_data(length, data);
if (length != 0)
btm_cb.ble_ctr_cb.inq_var.scan_rsp = true;
else
btm_cb.ble_ctr_cb.inq_var.scan_rsp = false;
p_adv_data_cback(BTM_SUCCESS);
}
/*******************************************************************************
*
* Function BTM__BLEReadDiscoverability
*
* Description This function is called to read the current LE
* discoverability mode of the device.
*
* Returns BTM_BLE_NON_DISCOVERABLE ,BTM_BLE_LIMITED_DISCOVERABLE or
* BTM_BLE_GENRAL_DISCOVERABLE
*
******************************************************************************/
uint16_t BTM_BleReadDiscoverability() {
BTM_TRACE_API("%s", __func__);
return (btm_cb.ble_ctr_cb.inq_var.discoverable_mode);
}
/*******************************************************************************
*
* Function BTM__BLEReadConnectability
*
* Description This function is called to read the current LE
* connectability mode of the device.
*
* Returns BTM_BLE_NON_CONNECTABLE or BTM_BLE_CONNECTABLE
*
******************************************************************************/
uint16_t BTM_BleReadConnectability() {
BTM_TRACE_API("%s", __func__);
return (btm_cb.ble_ctr_cb.inq_var.connectable_mode);
}
/*******************************************************************************
*
* Function btm_ble_select_adv_interval
*
* Description select adv interval based on device mode
*
* Returns void
*
******************************************************************************/
void btm_ble_select_adv_interval(tBTM_BLE_INQ_CB* p_cb, uint8_t evt_type,
uint16_t* p_adv_int_min,
uint16_t* p_adv_int_max) {
if (p_cb->adv_interval_min && p_cb->adv_interval_max) {
*p_adv_int_min = p_cb->adv_interval_min;
*p_adv_int_max = p_cb->adv_interval_max;
} else {
switch (evt_type) {
case BTM_BLE_CONNECT_EVT:
case BTM_BLE_CONNECT_LO_DUTY_DIR_EVT:
*p_adv_int_min = *p_adv_int_max = BTM_BLE_GAP_ADV_FAST_INT_1;
break;
case BTM_BLE_NON_CONNECT_EVT:
case BTM_BLE_DISCOVER_EVT:
*p_adv_int_min = *p_adv_int_max = BTM_BLE_GAP_ADV_FAST_INT_2;
break;
/* connectable directed event */
case BTM_BLE_CONNECT_DIR_EVT:
*p_adv_int_min = BTM_BLE_GAP_ADV_DIR_MIN_INT;
*p_adv_int_max = BTM_BLE_GAP_ADV_DIR_MAX_INT;
break;
default:
*p_adv_int_min = *p_adv_int_max = BTM_BLE_GAP_ADV_SLOW_INT;
break;
}
}
return;
}
/*******************************************************************************
*
* Function btm_ble_update_dmt_flag_bits
*
* Description Obtain updated adv flag value based on connect and
* discoverability mode. Also, setup DMT support value in the
* flag based on whether the controller supports both LE and
* BR/EDR.
*
* Parameters: flag_value (Input / Output) - flag value
* connect_mode (Input) - Connect mode value
* disc_mode (Input) - discoverability mode
*
* Returns void
*
******************************************************************************/
void btm_ble_update_dmt_flag_bits(uint8_t* adv_flag_value,
const uint16_t connect_mode,
const uint16_t disc_mode) {
/* BR/EDR non-discoverable , non-connectable */
if ((disc_mode & BTM_DISCOVERABLE_MASK) == 0 &&
(connect_mode & BTM_CONNECTABLE_MASK) == 0)
*adv_flag_value |= BTM_BLE_BREDR_NOT_SPT;
else
*adv_flag_value &= ~BTM_BLE_BREDR_NOT_SPT;
/* if local controller support, mark both controller and host support in flag
*/
if (controller_get_interface()->supports_simultaneous_le_bredr())
*adv_flag_value |= (BTM_BLE_DMT_CONTROLLER_SPT | BTM_BLE_DMT_HOST_SPT);
else
*adv_flag_value &= ~(BTM_BLE_DMT_CONTROLLER_SPT | BTM_BLE_DMT_HOST_SPT);
}
/*******************************************************************************
*
* Function btm_ble_set_adv_flag
*
* Description Set adv flag in adv data.
*
* Parameters: connect_mode (Input)- Connect mode value
* disc_mode (Input) - discoverability mode
*
* Returns void
*
******************************************************************************/
void btm_ble_set_adv_flag(uint16_t connect_mode, uint16_t disc_mode) {
uint8_t flag = 0, old_flag = 0;
tBTM_BLE_LOCAL_ADV_DATA* p_adv_data = &btm_cb.ble_ctr_cb.inq_var.adv_data;
if (p_adv_data->p_flags != NULL) flag = old_flag = *(p_adv_data->p_flags);
btm_ble_update_dmt_flag_bits(&flag, connect_mode, disc_mode);
LOG_DEBUG(LOG_TAG, "disc_mode %04x", disc_mode);
/* update discoverable flag */
if (disc_mode & BTM_BLE_LIMITED_DISCOVERABLE) {
flag &= ~BTM_BLE_GEN_DISC_FLAG;
flag |= BTM_BLE_LIMIT_DISC_FLAG;
} else if (disc_mode & BTM_BLE_GENERAL_DISCOVERABLE) {
flag |= BTM_BLE_GEN_DISC_FLAG;
flag &= ~BTM_BLE_LIMIT_DISC_FLAG;
} else /* remove all discoverable flags */
{
flag &= ~(BTM_BLE_LIMIT_DISC_FLAG | BTM_BLE_GEN_DISC_FLAG);
}
if (flag != old_flag) {
btm_ble_update_adv_flag(flag);
}
}
/*******************************************************************************
*
* Function btm_ble_set_discoverability
*
* Description This function is called to set BLE discoverable mode.
*
* Parameters: combined_mode: discoverability mode.
*
* Returns BTM_SUCCESS is status set successfully; otherwise failure.
*
******************************************************************************/
tBTM_STATUS btm_ble_set_discoverability(uint16_t combined_mode) {
tBTM_LE_RANDOM_CB* p_addr_cb = &btm_cb.ble_ctr_cb.addr_mgnt_cb;
tBTM_BLE_INQ_CB* p_cb = &btm_cb.ble_ctr_cb.inq_var;
uint16_t mode = (combined_mode & BTM_BLE_DISCOVERABLE_MASK);
uint8_t new_mode = BTM_BLE_ADV_ENABLE;
uint8_t evt_type;
tBTM_STATUS status = BTM_SUCCESS;
RawAddress address = RawAddress::kEmpty;
tBLE_ADDR_TYPE init_addr_type = BLE_ADDR_PUBLIC,
own_addr_type = p_addr_cb->own_addr_type;
uint16_t adv_int_min, adv_int_max;
BTM_TRACE_EVENT("%s mode=0x%0x combined_mode=0x%x", __func__, mode,
combined_mode);
/*** Check mode parameter ***/
if (mode > BTM_BLE_MAX_DISCOVERABLE) return (BTM_ILLEGAL_VALUE);
p_cb->discoverable_mode = mode;
evt_type = btm_set_conn_mode_adv_init_addr(p_cb, address, &init_addr_type,
&own_addr_type);
if (p_cb->connectable_mode == BTM_BLE_NON_CONNECTABLE &&
mode == BTM_BLE_NON_DISCOVERABLE)
new_mode = BTM_BLE_ADV_DISABLE;
btm_ble_select_adv_interval(p_cb, evt_type, &adv_int_min, &adv_int_max);
alarm_cancel(p_cb->fast_adv_timer);
/* update adv params if start advertising */
BTM_TRACE_EVENT("evt_type=0x%x p-cb->evt_type=0x%x ", evt_type,
p_cb->evt_type);
if (new_mode == BTM_BLE_ADV_ENABLE) {
btm_ble_set_adv_flag(btm_cb.btm_inq_vars.connectable_mode, combined_mode);
if (evt_type != p_cb->evt_type || p_cb->adv_addr_type != own_addr_type ||
!p_cb->fast_adv_on) {
btm_ble_stop_adv();
/* update adv params */
btsnd_hcic_ble_write_adv_params(adv_int_min, adv_int_max, evt_type,
own_addr_type, init_addr_type, address,
p_cb->adv_chnl_map, p_cb->afp);
p_cb->evt_type = evt_type;
p_cb->adv_addr_type = own_addr_type;
}
}
if (status == BTM_SUCCESS && p_cb->adv_mode != new_mode) {
if (new_mode == BTM_BLE_ADV_ENABLE)
status = btm_ble_start_adv();
else
status = btm_ble_stop_adv();
}
if (p_cb->adv_mode == BTM_BLE_ADV_ENABLE) {
p_cb->fast_adv_on = true;
/* start initial GAP mode adv timer */
alarm_set_on_mloop(p_cb->fast_adv_timer, BTM_BLE_GAP_FAST_ADV_TIMEOUT_MS,
btm_ble_fast_adv_timer_timeout, NULL);
} else {
#if (BLE_PRIVACY_SPT == TRUE)
btm_ble_disable_resolving_list(BTM_BLE_RL_ADV, true);
#endif
}
/* set up stop advertising timer */
if (status == BTM_SUCCESS && mode == BTM_BLE_LIMITED_DISCOVERABLE) {
BTM_TRACE_EVENT("start timer for limited disc mode duration=%d ms",
BTM_BLE_GAP_LIM_TIMEOUT_MS);
/* start Tgap(lim_timeout) */
alarm_set_on_mloop(p_cb->inquiry_timer, BTM_BLE_GAP_LIM_TIMEOUT_MS,
btm_ble_inquiry_timer_gap_limited_discovery_timeout,
NULL);
}
return status;
}
/*******************************************************************************
*
* Function btm_ble_set_connectability
*
* Description This function is called to set BLE connectability mode.
*
* Parameters: combined_mode: connectability mode.
*
* Returns BTM_SUCCESS is status set successfully; otherwise failure.
*
******************************************************************************/
tBTM_STATUS btm_ble_set_connectability(uint16_t combined_mode) {
tBTM_LE_RANDOM_CB* p_addr_cb = &btm_cb.ble_ctr_cb.addr_mgnt_cb;
tBTM_BLE_INQ_CB* p_cb = &btm_cb.ble_ctr_cb.inq_var;
uint16_t mode = (combined_mode & BTM_BLE_CONNECTABLE_MASK);
uint8_t new_mode = BTM_BLE_ADV_ENABLE;
uint8_t evt_type;
tBTM_STATUS status = BTM_SUCCESS;
RawAddress address = RawAddress::kEmpty;
tBLE_ADDR_TYPE peer_addr_type = BLE_ADDR_PUBLIC,
own_addr_type = p_addr_cb->own_addr_type;
uint16_t adv_int_min, adv_int_max;
BTM_TRACE_EVENT("%s mode=0x%0x combined_mode=0x%x", __func__, mode,
combined_mode);
/*** Check mode parameter ***/
if (mode > BTM_BLE_MAX_CONNECTABLE) return (BTM_ILLEGAL_VALUE);
p_cb->connectable_mode = mode;
evt_type = btm_set_conn_mode_adv_init_addr(p_cb, address, &peer_addr_type,
&own_addr_type);
if (mode == BTM_BLE_NON_CONNECTABLE &&
p_cb->discoverable_mode == BTM_BLE_NON_DISCOVERABLE)
new_mode = BTM_BLE_ADV_DISABLE;
btm_ble_select_adv_interval(p_cb, evt_type, &adv_int_min, &adv_int_max);
alarm_cancel(p_cb->fast_adv_timer);
/* update adv params if needed */
if (new_mode == BTM_BLE_ADV_ENABLE) {
btm_ble_set_adv_flag(combined_mode, btm_cb.btm_inq_vars.discoverable_mode);
if (p_cb->evt_type != evt_type ||
p_cb->adv_addr_type != p_addr_cb->own_addr_type || !p_cb->fast_adv_on) {
btm_ble_stop_adv();
btsnd_hcic_ble_write_adv_params(adv_int_min, adv_int_max, evt_type,
own_addr_type, peer_addr_type, address,
p_cb->adv_chnl_map, p_cb->afp);
p_cb->evt_type = evt_type;
p_cb->adv_addr_type = own_addr_type;
}
}
/* update advertising mode */
if (status == BTM_SUCCESS && new_mode != p_cb->adv_mode) {
if (new_mode == BTM_BLE_ADV_ENABLE)
status = btm_ble_start_adv();
else
status = btm_ble_stop_adv();
}
if (p_cb->adv_mode == BTM_BLE_ADV_ENABLE) {
p_cb->fast_adv_on = true;
/* start initial GAP mode adv timer */
alarm_set_on_mloop(p_cb->fast_adv_timer, BTM_BLE_GAP_FAST_ADV_TIMEOUT_MS,
btm_ble_fast_adv_timer_timeout, NULL);
} else {
#if (BLE_PRIVACY_SPT == TRUE)
btm_ble_disable_resolving_list(BTM_BLE_RL_ADV, true);
#endif
}
return status;
}
void btm_send_hci_scan_enable(uint8_t enable, uint8_t filter_duplicates) {
if (controller_get_interface()->supports_ble_extended_advertising()) {
btsnd_hcic_ble_set_extended_scan_enable(enable, filter_duplicates, 0x0000,
0x0000);
} else {
btsnd_hcic_ble_set_scan_enable(enable, filter_duplicates);
}
}
void btm_send_hci_set_scan_params(uint8_t scan_type, uint16_t scan_int,
uint16_t scan_win, uint8_t addr_type_own,
uint8_t scan_filter_policy) {
if (controller_get_interface()->supports_ble_extended_advertising()) {
scanning_phy_cfg phy_cfg;
phy_cfg.scan_type = scan_type;
phy_cfg.scan_int = scan_int;
phy_cfg.scan_win = scan_win;
btsnd_hcic_ble_set_extended_scan_params(addr_type_own, scan_filter_policy,
1, &phy_cfg);
} else {
btsnd_hcic_ble_set_scan_params(scan_type, scan_int, scan_win, addr_type_own,
scan_filter_policy);
}
}
/*******************************************************************************
*
* Function btm_ble_start_inquiry
*
* Description This function is called to start BLE inquiry procedure.
* If the duration is zero, the periodic inquiry mode is
* cancelled.
*
* Parameters: mode - GENERAL or LIMITED inquiry
* p_inq_params - pointer to the BLE inquiry parameter.
* p_results_cb - callback returning pointer to results
* (tBTM_INQ_RESULTS)
* p_cmpl_cb - callback indicating the end of an inquiry
*
*
*
* Returns BTM_CMD_STARTED if successfully started
* BTM_NO_RESOURCES if could not allocate a message buffer
* BTM_BUSY - if an inquiry is already active
*
******************************************************************************/
tBTM_STATUS btm_ble_start_inquiry(uint8_t mode, uint8_t duration) {
tBTM_STATUS status = BTM_CMD_STARTED;
tBTM_BLE_CB* p_ble_cb = &btm_cb.ble_ctr_cb;
tBTM_INQUIRY_VAR_ST* p_inq = &btm_cb.btm_inq_vars;
BTM_TRACE_DEBUG("btm_ble_start_inquiry: mode = %02x inq_active = 0x%02x",
mode, btm_cb.btm_inq_vars.inq_active);
/* if selective connection is active, or inquiry is already active, reject it
*/
if (BTM_BLE_IS_INQ_ACTIVE(p_ble_cb->scan_activity)) {
BTM_TRACE_ERROR("LE Inquiry is active, can not start inquiry");
return (BTM_BUSY);
}
if (!BTM_BLE_IS_SCAN_ACTIVE(p_ble_cb->scan_activity)) {
btm_send_hci_set_scan_params(
BTM_BLE_SCAN_MODE_ACTI, BTM_BLE_LOW_LATENCY_SCAN_INT,
BTM_BLE_LOW_LATENCY_SCAN_WIN,
btm_cb.ble_ctr_cb.addr_mgnt_cb.own_addr_type, SP_ADV_ALL);
#if (BLE_PRIVACY_SPT == TRUE)
/* enable IRK list */
btm_ble_enable_resolving_list_for_platform(BTM_BLE_RL_SCAN);
#endif
p_ble_cb->inq_var.scan_type = BTM_BLE_SCAN_MODE_ACTI;
p_ble_cb->inq_var.scan_duplicate_filter = BTM_BLE_DUPLICATE_DISABLE;
status = btm_ble_start_scan();
} else if ((p_ble_cb->inq_var.scan_interval !=
BTM_BLE_LOW_LATENCY_SCAN_INT) ||
(p_ble_cb->inq_var.scan_window != BTM_BLE_LOW_LATENCY_SCAN_WIN)) {
BTM_TRACE_DEBUG("%s, restart LE scan with low latency scan params",
__func__);
btm_send_hci_scan_enable(BTM_BLE_SCAN_DISABLE, BTM_BLE_DUPLICATE_ENABLE);
btm_send_hci_set_scan_params(
BTM_BLE_SCAN_MODE_ACTI, BTM_BLE_LOW_LATENCY_SCAN_INT,
BTM_BLE_LOW_LATENCY_SCAN_WIN,
btm_cb.ble_ctr_cb.addr_mgnt_cb.own_addr_type, SP_ADV_ALL);
btm_send_hci_scan_enable(BTM_BLE_SCAN_ENABLE, BTM_BLE_DUPLICATE_DISABLE);
}
if (status == BTM_CMD_STARTED) {
p_inq->inq_active |= mode;
p_ble_cb->scan_activity |= mode;
BTM_TRACE_DEBUG("btm_ble_start_inquiry inq_active = 0x%02x",
p_inq->inq_active);
if (duration != 0) {
/* start inquiry timer */
uint64_t duration_ms = duration * 1000;
alarm_set_on_mloop(p_ble_cb->inq_var.inquiry_timer, duration_ms,
btm_ble_inquiry_timer_timeout, NULL);
}
}
return status;
}
/*******************************************************************************
*
* Function btm_ble_read_remote_name_cmpl
*
* Description This function is called when BLE remote name is received.
*
* Returns void
*
******************************************************************************/
void btm_ble_read_remote_name_cmpl(bool status, const RawAddress& bda,
uint16_t length, char* p_name) {
uint8_t hci_status = HCI_SUCCESS;
BD_NAME bd_name;
memset(bd_name, 0, (BD_NAME_LEN + 1));
if (length > BD_NAME_LEN) {
length = BD_NAME_LEN;
}
memcpy((uint8_t*)bd_name, p_name, length);
if ((!status) || (length == 0)) {
hci_status = HCI_ERR_HOST_TIMEOUT;
}
btm_process_remote_name(&bda, bd_name, length + 1, hci_status);
btm_sec_rmt_name_request_complete(&bda, (uint8_t*)p_name, hci_status);
}
/*******************************************************************************
*
* Function btm_ble_read_remote_name
*
* Description This function read remote LE device name using GATT read
* procedure.
*
* Parameters: None.
*
* Returns void
*
******************************************************************************/
tBTM_STATUS btm_ble_read_remote_name(const RawAddress& remote_bda,
tBTM_CMPL_CB* p_cb) {
tBTM_INQUIRY_VAR_ST* p_inq = &btm_cb.btm_inq_vars;
if (!controller_get_interface()->supports_ble()) return BTM_ERR_PROCESSING;
tINQ_DB_ENT* p_i = btm_inq_db_find(remote_bda);
if (p_i && !ble_evt_type_is_connectable(p_i->inq_info.results.ble_evt_type)) {
BTM_TRACE_DEBUG("name request to non-connectable device failed.");
return BTM_ERR_PROCESSING;
}
/* read remote device name using GATT procedure */
if (p_inq->remname_active) return BTM_BUSY;
if (!GAP_BleReadPeerDevName(remote_bda, btm_ble_read_remote_name_cmpl))
return BTM_BUSY;
p_inq->p_remname_cmpl_cb = p_cb;
p_inq->remname_active = true;
p_inq->remname_bda = remote_bda;
alarm_set_on_mloop(p_inq->remote_name_timer, BTM_EXT_BLE_RMT_NAME_TIMEOUT_MS,
btm_inq_remote_name_timer_timeout, NULL);
return BTM_CMD_STARTED;
}
/*******************************************************************************
*
* Function btm_ble_cancel_remote_name
*
* Description This function cancel read remote LE device name.
*
* Parameters: None.
*
* Returns void
*
******************************************************************************/
bool btm_ble_cancel_remote_name(const RawAddress& remote_bda) {
tBTM_INQUIRY_VAR_ST* p_inq = &btm_cb.btm_inq_vars;
bool status;
status = GAP_BleCancelReadPeerDevName(remote_bda);
p_inq->remname_active = false;
p_inq->remname_bda = RawAddress::kEmpty;
alarm_cancel(p_inq->remote_name_timer);
return status;
}
/*******************************************************************************
*
* Function btm_ble_update_adv_flag
*
* Description This function update the limited discoverable flag in the
* adv data.
*
* Parameters: None.
*
* Returns void
*
******************************************************************************/
static void btm_ble_update_adv_flag(uint8_t flag) {
tBTM_BLE_LOCAL_ADV_DATA* p_adv_data = &btm_cb.ble_ctr_cb.inq_var.adv_data;
uint8_t* p;
BTM_TRACE_DEBUG("btm_ble_update_adv_flag new=0x%x", flag);
if (p_adv_data->p_flags != NULL) {
BTM_TRACE_DEBUG("btm_ble_update_adv_flag old=0x%x", *p_adv_data->p_flags);
*p_adv_data->p_flags = flag;
} else /* no FLAGS in ADV data*/
{
p = (p_adv_data->p_pad == NULL) ? p_adv_data->ad_data : p_adv_data->p_pad;
/* need 3 bytes space to stuff in the flags, if not */
/* erase all written data, just for flags */
if ((BTM_BLE_AD_DATA_LEN - (p - p_adv_data->ad_data)) < 3) {
p = p_adv_data->p_pad = p_adv_data->ad_data;
memset(p_adv_data->ad_data, 0, BTM_BLE_AD_DATA_LEN);
}
*p++ = 2;
*p++ = BTM_BLE_AD_TYPE_FLAG;
p_adv_data->p_flags = p;
*p++ = flag;
p_adv_data->p_pad = p;
}
btsnd_hcic_ble_set_adv_data(
(uint8_t)(p_adv_data->p_pad - p_adv_data->ad_data), p_adv_data->ad_data);
p_adv_data->data_mask |= BTM_BLE_AD_BIT_FLAGS;
}
/**
* Check ADV flag to make sure device is discoverable and match the search
* condition
*/
uint8_t btm_ble_is_discoverable(const RawAddress& bda,
std::vector<uint8_t> const& adv_data) {
uint8_t flag = 0, rt = 0;
uint8_t data_len;
tBTM_INQ_PARMS* p_cond = &btm_cb.btm_inq_vars.inqparms;
/* for observer, always "discoverable */
if (BTM_BLE_IS_OBS_ACTIVE(btm_cb.ble_ctr_cb.scan_activity))
rt |= BTM_BLE_OBS_RESULT;
/* does not match filter condition */
if (p_cond->filter_cond_type == BTM_FILTER_COND_BD_ADDR &&
bda != p_cond->filter_cond.bdaddr_cond) {
BTM_TRACE_DEBUG("BD ADDR does not meet filter condition");
return rt;
}
if (!adv_data.empty()) {
const uint8_t* p_flag = AdvertiseDataParser::GetFieldByType(
adv_data, BTM_BLE_AD_TYPE_FLAG, &data_len);
if (p_flag != NULL && data_len != 0) {
flag = *p_flag;
if ((btm_cb.btm_inq_vars.inq_active & BTM_BLE_GENERAL_INQUIRY) &&
(flag & (BTM_BLE_LIMIT_DISC_FLAG | BTM_BLE_GEN_DISC_FLAG)) != 0) {
BTM_TRACE_DEBUG("Find Generable Discoverable device");
rt |= BTM_BLE_INQ_RESULT;
}
else if (btm_cb.btm_inq_vars.inq_active & BTM_BLE_LIMITED_INQUIRY &&
(flag & BTM_BLE_LIMIT_DISC_FLAG) != 0) {
BTM_TRACE_DEBUG("Find limited discoverable device");
rt |= BTM_BLE_INQ_RESULT;
}
}
}
return rt;
}
static void btm_ble_appearance_to_cod(uint16_t appearance, uint8_t* dev_class) {
dev_class[0] = 0;
switch (appearance) {
case BTM_BLE_APPEARANCE_GENERIC_PHONE:
dev_class[1] = BTM_COD_MAJOR_PHONE;
dev_class[2] = BTM_COD_MINOR_UNCLASSIFIED;
break;
case BTM_BLE_APPEARANCE_GENERIC_COMPUTER:
dev_class[1] = BTM_COD_MAJOR_COMPUTER;
dev_class[2] = BTM_COD_MINOR_UNCLASSIFIED;
break;
case BTM_BLE_APPEARANCE_GENERIC_REMOTE:
dev_class[1] = BTM_COD_MAJOR_PERIPHERAL;
dev_class[2] = BTM_COD_MINOR_REMOTE_CONTROL;
break;
case BTM_BLE_APPEARANCE_GENERIC_THERMOMETER:
case BTM_BLE_APPEARANCE_THERMOMETER_EAR:
dev_class[1] = BTM_COD_MAJOR_HEALTH;
dev_class[2] = BTM_COD_MINOR_THERMOMETER;
break;
case BTM_BLE_APPEARANCE_GENERIC_HEART_RATE:
case BTM_BLE_APPEARANCE_HEART_RATE_BELT:
dev_class[1] = BTM_COD_MAJOR_HEALTH;
dev_class[2] = BTM_COD_MINOR_HEART_PULSE_MONITOR;
break;
case BTM_BLE_APPEARANCE_GENERIC_BLOOD_PRESSURE:
case BTM_BLE_APPEARANCE_BLOOD_PRESSURE_ARM:
case BTM_BLE_APPEARANCE_BLOOD_PRESSURE_WRIST:
dev_class[1] = BTM_COD_MAJOR_HEALTH;
dev_class[2] = BTM_COD_MINOR_BLOOD_MONITOR;
break;
case BTM_BLE_APPEARANCE_GENERIC_PULSE_OXIMETER:
case BTM_BLE_APPEARANCE_PULSE_OXIMETER_FINGERTIP:
case BTM_BLE_APPEARANCE_PULSE_OXIMETER_WRIST:
dev_class[1] = BTM_COD_MAJOR_HEALTH;
dev_class[2] = BTM_COD_MINOR_PULSE_OXIMETER;
break;
case BTM_BLE_APPEARANCE_GENERIC_GLUCOSE:
dev_class[1] = BTM_COD_MAJOR_HEALTH;
dev_class[2] = BTM_COD_MINOR_GLUCOSE_METER;
break;
case BTM_BLE_APPEARANCE_GENERIC_WEIGHT:
dev_class[1] = BTM_COD_MAJOR_HEALTH;
dev_class[2] = BTM_COD_MINOR_WEIGHING_SCALE;
break;
case BTM_BLE_APPEARANCE_GENERIC_WALKING:
case BTM_BLE_APPEARANCE_WALKING_IN_SHOE:
case BTM_BLE_APPEARANCE_WALKING_ON_SHOE:
case BTM_BLE_APPEARANCE_WALKING_ON_HIP:
dev_class[1] = BTM_COD_MAJOR_HEALTH;
dev_class[2] = BTM_COD_MINOR_STEP_COUNTER;
break;
case BTM_BLE_APPEARANCE_GENERIC_WATCH:
case BTM_BLE_APPEARANCE_SPORTS_WATCH:
dev_class[1] = BTM_COD_MAJOR_WEARABLE;
dev_class[2] = BTM_COD_MINOR_WRIST_WATCH;
break;
case BTM_BLE_APPEARANCE_GENERIC_EYEGLASSES:
dev_class[1] = BTM_COD_MAJOR_WEARABLE;
dev_class[2] = BTM_COD_MINOR_GLASSES;
break;
case BTM_BLE_APPEARANCE_GENERIC_DISPLAY:
dev_class[1] = BTM_COD_MAJOR_IMAGING;
dev_class[2] = BTM_COD_MINOR_DISPLAY;
break;
case BTM_BLE_APPEARANCE_GENERIC_MEDIA_PLAYER:
dev_class[1] = BTM_COD_MAJOR_AUDIO;
dev_class[2] = BTM_COD_MINOR_UNCLASSIFIED;
break;
case BTM_BLE_APPEARANCE_GENERIC_BARCODE_SCANNER:
case BTM_BLE_APPEARANCE_HID_BARCODE_SCANNER:
case BTM_BLE_APPEARANCE_GENERIC_HID:
dev_class[1] = BTM_COD_MAJOR_PERIPHERAL;
dev_class[2] = BTM_COD_MINOR_UNCLASSIFIED;
break;
case BTM_BLE_APPEARANCE_HID_KEYBOARD:
dev_class[1] = BTM_COD_MAJOR_PERIPHERAL;
dev_class[2] = BTM_COD_MINOR_KEYBOARD;
break;
case BTM_BLE_APPEARANCE_HID_MOUSE:
dev_class[1] = BTM_COD_MAJOR_PERIPHERAL;
dev_class[2] = BTM_COD_MINOR_POINTING;
break;
case BTM_BLE_APPEARANCE_HID_JOYSTICK:
dev_class[1] = BTM_COD_MAJOR_PERIPHERAL;
dev_class[2] = BTM_COD_MINOR_JOYSTICK;
break;
case BTM_BLE_APPEARANCE_HID_GAMEPAD:
dev_class[1] = BTM_COD_MAJOR_PERIPHERAL;
dev_class[2] = BTM_COD_MINOR_GAMEPAD;
break;
case BTM_BLE_APPEARANCE_HID_DIGITIZER_TABLET:
dev_class[1] = BTM_COD_MAJOR_PERIPHERAL;
dev_class[2] = BTM_COD_MINOR_DIGITIZING_TABLET;
break;
case BTM_BLE_APPEARANCE_HID_CARD_READER:
dev_class[1] = BTM_COD_MAJOR_PERIPHERAL;
dev_class[2] = BTM_COD_MINOR_CARD_READER;
break;
case BTM_BLE_APPEARANCE_HID_DIGITAL_PEN:
dev_class[1] = BTM_COD_MAJOR_PERIPHERAL;
dev_class[2] = BTM_COD_MINOR_DIGITAL_PAN;
break;
case BTM_BLE_APPEARANCE_UKNOWN:
case BTM_BLE_APPEARANCE_GENERIC_CLOCK:
case BTM_BLE_APPEARANCE_GENERIC_TAG:
case BTM_BLE_APPEARANCE_GENERIC_KEYRING:
case BTM_BLE_APPEARANCE_GENERIC_CYCLING:
case BTM_BLE_APPEARANCE_CYCLING_COMPUTER:
case BTM_BLE_APPEARANCE_CYCLING_SPEED:
case BTM_BLE_APPEARANCE_CYCLING_CADENCE:
case BTM_BLE_APPEARANCE_CYCLING_POWER:
case BTM_BLE_APPEARANCE_CYCLING_SPEED_CADENCE:
case BTM_BLE_APPEARANCE_GENERIC_OUTDOOR_SPORTS:
case BTM_BLE_APPEARANCE_OUTDOOR_SPORTS_LOCATION:
case BTM_BLE_APPEARANCE_OUTDOOR_SPORTS_LOCATION_AND_NAV:
case BTM_BLE_APPEARANCE_OUTDOOR_SPORTS_LOCATION_POD:
case BTM_BLE_APPEARANCE_OUTDOOR_SPORTS_LOCATION_POD_AND_NAV:
default:
dev_class[1] = BTM_COD_MAJOR_UNCLASSIFIED;
dev_class[2] = BTM_COD_MINOR_UNCLASSIFIED;
};
}
/**
* Update adv packet information into inquiry result.
*/
void btm_ble_update_inq_result(tINQ_DB_ENT* p_i, uint8_t addr_type,
const RawAddress& bda, uint16_t evt_type,
uint8_t primary_phy, uint8_t secondary_phy,
uint8_t advertising_sid, int8_t tx_power,
int8_t rssi, uint16_t periodic_adv_int,
std::vector<uint8_t> const& data) {
tBTM_INQ_RESULTS* p_cur = &p_i->inq_info.results;
uint8_t len;
tBTM_INQUIRY_VAR_ST* p_inq = &btm_cb.btm_inq_vars;
/* Save the info */
p_cur->inq_result_type |= BTM_INQ_RESULT_BLE;
p_cur->ble_addr_type = addr_type;
p_cur->rssi = rssi;
p_cur->ble_primary_phy = primary_phy;
p_cur->ble_secondary_phy = secondary_phy;
p_cur->ble_advertising_sid = advertising_sid;
p_cur->ble_tx_power = tx_power;
p_cur->ble_periodic_adv_int = periodic_adv_int;
if (btm_cb.ble_ctr_cb.inq_var.scan_type == BTM_BLE_SCAN_MODE_ACTI &&
ble_evt_type_is_scannable(evt_type) &&
!ble_evt_type_is_scan_resp(evt_type)) {
p_i->scan_rsp = false;
} else
p_i->scan_rsp = true;
if (p_i->inq_count != p_inq->inq_counter)
p_cur->device_type = BT_DEVICE_TYPE_BLE;
else
p_cur->device_type |= BT_DEVICE_TYPE_BLE;
if (evt_type != BTM_BLE_SCAN_RSP_EVT) p_cur->ble_evt_type = evt_type;
p_i->inq_count = p_inq->inq_counter; /* Mark entry for current inquiry */
if (!data.empty()) {
const uint8_t* p_flag =
AdvertiseDataParser::GetFieldByType(data, BTM_BLE_AD_TYPE_FLAG, &len);
if (p_flag != NULL && len != 0) p_cur->flag = *p_flag;
}
if (!data.empty()) {
/* Check to see the BLE device has the Appearance UUID in the advertising
* data. If it does
* then try to convert the appearance value to a class of device value
* Bluedroid can use.
* Otherwise fall back to trying to infer if it is a HID device based on the
* service class.
*/
const uint8_t* p_uuid16 = AdvertiseDataParser::GetFieldByType(
data, BTM_BLE_AD_TYPE_APPEARANCE, &len);
if (p_uuid16 && len == 2) {
btm_ble_appearance_to_cod((uint16_t)p_uuid16[0] | (p_uuid16[1] << 8),
p_cur->dev_class);
} else {
p_uuid16 = AdvertiseDataParser::GetFieldByType(
data, BTM_BLE_AD_TYPE_16SRV_CMPL, &len);
if (p_uuid16 != NULL) {
uint8_t i;
for (i = 0; i + 2 <= len; i = i + 2) {
/* if this BLE device support HID over LE, set HID Major in class of
* device */
if ((p_uuid16[i] | (p_uuid16[i + 1] << 8)) == UUID_SERVCLASS_LE_HID) {
p_cur->dev_class[0] = 0;
p_cur->dev_class[1] = BTM_COD_MAJOR_PERIPHERAL;
p_cur->dev_class[2] = 0;
break;
}
}
}
}
}
/* if BR/EDR not supported is not set, assume is a DUMO device */
if ((p_cur->flag & BTM_BLE_BREDR_NOT_SPT) == 0 &&
!ble_evt_type_is_directed(evt_type)) {
if (p_cur->ble_addr_type != BLE_ADDR_RANDOM) {
BTM_TRACE_DEBUG("BR/EDR NOT support bit not set, treat as DUMO");
p_cur->device_type |= BT_DEVICE_TYPE_DUMO;
} else {
BTM_TRACE_DEBUG("Random address, treating device as LE only");
}
} else {
BTM_TRACE_DEBUG("BR/EDR NOT SUPPORT bit set, LE only device");
}
}
/*******************************************************************************
*
* Function btm_clear_all_pending_le_entry
*
* Description This function is called to clear all LE pending entry in
* inquiry database.
*
* Returns void
*
******************************************************************************/
void btm_clear_all_pending_le_entry(void) {
uint16_t xx;
tINQ_DB_ENT* p_ent = btm_cb.btm_inq_vars.inq_db;
for (xx = 0; xx < BTM_INQ_DB_SIZE; xx++, p_ent++) {
/* mark all pending LE entry as unused if an LE only device has scan
* response outstanding */
if ((p_ent->in_use) &&
(p_ent->inq_info.results.device_type == BT_DEVICE_TYPE_BLE) &&
!p_ent->scan_rsp)
p_ent->in_use = false;
}
}
void btm_ble_process_adv_addr(RawAddress& bda, uint8_t* addr_type) {
#if (BLE_PRIVACY_SPT == TRUE)
/* map address to security record */
bool match = btm_identity_addr_to_random_pseudo(&bda, addr_type, false);
VLOG(1) << __func__ << ": bda=" << bda;
/* always do RRA resolution on host */
if (!match && BTM_BLE_IS_RESOLVE_BDA(bda)) {
tBTM_SEC_DEV_REC* match_rec = btm_ble_resolve_random_addr(bda);
if (match_rec) {
match_rec->ble.active_addr_type = BTM_BLE_ADDR_RRA;
match_rec->ble.cur_rand_addr = bda;
if (btm_ble_init_pseudo_addr(match_rec, bda)) {
bda = match_rec->bd_addr;
} else {
// Assign the original address to be the current report address
bda = match_rec->ble.pseudo_addr;
*addr_type = match_rec->ble.ble_addr_type;
}
}
}
#endif
}
/**
* This function is called when extended advertising report event is received .
* It updates the inquiry database. If the inquiry database is full, the oldest
* entry is discarded.
*/
void btm_ble_process_ext_adv_pkt(uint8_t data_len, uint8_t* data) {
RawAddress bda, direct_address;
uint8_t* p = data;
uint8_t addr_type, num_reports, pkt_data_len, primary_phy, secondary_phy,
advertising_sid;
int8_t rssi, tx_power;
uint16_t event_type, periodic_adv_int, direct_address_type;
/* Only process the results if the inquiry is still active */
if (!BTM_BLE_IS_SCAN_ACTIVE(btm_cb.ble_ctr_cb.scan_activity)) return;
/* Extract the number of reports in this event. */
STREAM_TO_UINT8(num_reports, p);
while (num_reports--) {
if (p > data + data_len) {
// TODO(jpawlowski): we should crash the stack here
BTM_TRACE_ERROR(
"Malformed LE Extended Advertising Report Event from controller - "
"can't loop the data");
return;
}
/* Extract inquiry results */
STREAM_TO_UINT16(event_type, p);
STREAM_TO_UINT8(addr_type, p);
STREAM_TO_BDADDR(bda, p);
STREAM_TO_UINT8(primary_phy, p);
STREAM_TO_UINT8(secondary_phy, p);
STREAM_TO_UINT8(advertising_sid, p);
STREAM_TO_INT8(tx_power, p);
STREAM_TO_INT8(rssi, p);
STREAM_TO_UINT16(periodic_adv_int, p);
STREAM_TO_UINT8(direct_address_type, p);
STREAM_TO_BDADDR(direct_address, p);
STREAM_TO_UINT8(pkt_data_len, p);
uint8_t* pkt_data = p;
p += pkt_data_len; /* Advance to the the next packet*/
if (p > data + data_len) {
LOG(ERROR) << "Invalid pkt_data_len: " << +pkt_data_len;
return;
}
if (rssi >= 21 && rssi <= 126) {
BTM_TRACE_ERROR("%s: bad rssi value in advertising report: %d", __func__,
rssi);
}
if (addr_type != BLE_ADDR_ANONYMOUS) {
btm_ble_process_adv_addr(bda, &addr_type);
}
btm_ble_process_adv_pkt_cont(event_type, addr_type, bda, primary_phy,
secondary_phy, advertising_sid, tx_power, rssi,
periodic_adv_int, pkt_data_len, pkt_data);
}
}
/**
* This function is called when advertising report event is received. It updates
* the inquiry database. If the inquiry database is full, the oldest entry is
* discarded.
*/
void btm_ble_process_adv_pkt(uint8_t data_len, uint8_t* data) {
RawAddress bda;
uint8_t* p = data;
uint8_t legacy_evt_type, addr_type, num_reports, pkt_data_len;
int8_t rssi;
/* Only process the results if the inquiry is still active */
if (!BTM_BLE_IS_SCAN_ACTIVE(btm_cb.ble_ctr_cb.scan_activity)) return;
/* Extract the number of reports in this event. */
STREAM_TO_UINT8(num_reports, p);
while (num_reports--) {
if (p > data + data_len) {
// TODO(jpawlowski): we should crash the stack here
BTM_TRACE_ERROR("Malformed LE Advertising Report Event from controller");
return;
}
/* Extract inquiry results */
STREAM_TO_UINT8(legacy_evt_type, p);
STREAM_TO_UINT8(addr_type, p);
STREAM_TO_BDADDR(bda, p);
STREAM_TO_UINT8(pkt_data_len, p);
uint8_t* pkt_data = p;
p += pkt_data_len; /* Advance to the the rssi byte */
if (p > data + data_len - sizeof(rssi)) {
LOG(ERROR) << "Invalid pkt_data_len: " << +pkt_data_len;
return;
}
STREAM_TO_INT8(rssi, p);
if (rssi >= 21 && rssi <= 126) {
BTM_TRACE_ERROR("%s: bad rssi value in advertising report: ", __func__,
pkt_data_len, rssi);
}
btm_ble_process_adv_addr(bda, &addr_type);
uint16_t event_type;
event_type = 1 << BLE_EVT_LEGACY_BIT;
if (legacy_evt_type == BTM_BLE_ADV_IND_EVT) {
event_type |= (1 << BLE_EVT_CONNECTABLE_BIT)|
(1 << BLE_EVT_SCANNABLE_BIT);
} else if (legacy_evt_type == BTM_BLE_ADV_DIRECT_IND_EVT) {
event_type |= (1 << BLE_EVT_CONNECTABLE_BIT)|
(1 << BLE_EVT_DIRECTED_BIT);
} else if (legacy_evt_type == BTM_BLE_ADV_SCAN_IND_EVT) {
event_type |= (1 << BLE_EVT_SCANNABLE_BIT);
} else if (legacy_evt_type == BTM_BLE_ADV_NONCONN_IND_EVT) {
event_type = (1 << BLE_EVT_LEGACY_BIT);//0x0010;
} else if (legacy_evt_type == BTM_BLE_SCAN_RSP_EVT) { // SCAN_RSP;
// We can't distinguish between "SCAN_RSP to an ADV_IND", and "SCAN_RSP to
// an ADV_SCAN_IND", so always return "SCAN_RSP to an ADV_IND"
event_type |= (1 << BLE_EVT_CONNECTABLE_BIT)|
(1 << BLE_EVT_SCANNABLE_BIT)|
(1 << BLE_EVT_SCAN_RESPONSE_BIT);
} else {
BTM_TRACE_ERROR(
"Malformed LE Advertising Report Event - unsupported "
"legacy_event_type 0x%02x",
legacy_evt_type);
return;
}
btm_ble_process_adv_pkt_cont(
event_type, addr_type, bda, PHY_LE_1M, PHY_LE_NO_PACKET, NO_ADI_PRESENT,
TX_POWER_NOT_PRESENT, rssi, 0x00 /* no periodic adv */, pkt_data_len,
pkt_data);
}
}
/**
* This function is called after random address resolution is done, and proceed
* to process adv packet.
*/
void btm_ble_process_adv_pkt_cont(uint16_t evt_type, uint8_t addr_type,
const RawAddress& bda, uint8_t primary_phy,
uint8_t secondary_phy,
uint8_t advertising_sid, int8_t tx_power,
int8_t rssi, uint16_t periodic_adv_int,
uint8_t data_len, uint8_t* data) {
tBTM_INQUIRY_VAR_ST* p_inq = &btm_cb.btm_inq_vars;
bool update = true;
std::vector<uint8_t> tmp;
if (data_len != 0) tmp.insert(tmp.begin(), data, data + data_len);
bool is_scannable = ble_evt_type_is_scannable(evt_type);
bool is_scan_resp = ble_evt_type_is_scan_resp(evt_type);
bool is_start =
ble_evt_type_is_legacy(evt_type) && is_scannable && !is_scan_resp;
if (ble_evt_type_is_legacy(evt_type))
AdvertiseDataParser::RemoveTrailingZeros(tmp);
// We might have send scan request to this device before, but didn't get the
// response. In such case make sure data is put at start, not appended to
// already existing data.
std::vector<uint8_t> const& adv_data =
is_start ? cache.Set(addr_type, bda, std::move(tmp))
: cache.Append(addr_type, bda, std::move(tmp));
bool data_complete = (ble_evt_type_data_status(evt_type) != 0x01);
if (!data_complete) {
// If we didn't receive whole adv data yet, don't report the device.
DVLOG(1) << "Data not complete yet, waiting for more " << bda;
return;
}
bool is_active_scan =
btm_cb.ble_ctr_cb.inq_var.scan_type == BTM_BLE_SCAN_MODE_ACTI;
if (is_active_scan && is_scannable && !is_scan_resp) {
// If we didn't receive scan response yet, don't report the device.
DVLOG(1) << " Waiting for scan response " << bda;
return;
}
if (!AdvertiseDataParser::IsValid(adv_data)) {
DVLOG(1) << __func__ << "Dropping bad advertisement packet: "
<< base::HexEncode(adv_data.data(), adv_data.size());
return;
}
tINQ_DB_ENT* p_i = btm_inq_db_find(bda);
/* Check if this address has already been processed for this inquiry */
if (btm_inq_find_bdaddr(bda)) {
/* never been report as an LE device */
if (p_i && (!(p_i->inq_info.results.device_type & BT_DEVICE_TYPE_BLE) ||
/* scan repsonse to be updated */
(!p_i->scan_rsp))) {
update = true;
} else if (BTM_BLE_IS_OBS_ACTIVE(btm_cb.ble_ctr_cb.scan_activity)) {
update = false;
} else {
/* if yes, skip it */
return; /* assumption: one result per event */
}
}
/* If existing entry, use that, else get a new one (possibly reusing the
* oldest) */
if (p_i == NULL) {
p_i = btm_inq_db_new(bda);
if (p_i != NULL) {
p_inq->inq_cmpl_info.num_resp++;
p_i->time_of_resp = bluetooth::common::time_get_os_boottime_ms();
} else
return;
} else if (p_i->inq_count !=
p_inq->inq_counter) /* first time seen in this inquiry */
{
p_i->time_of_resp = bluetooth::common::time_get_os_boottime_ms();
p_inq->inq_cmpl_info.num_resp++;
}
/* update the LE device information in inquiry database */
btm_ble_update_inq_result(p_i, addr_type, bda, evt_type, primary_phy,
secondary_phy, advertising_sid, tx_power, rssi,
periodic_adv_int, adv_data);
uint8_t result = btm_ble_is_discoverable(bda, adv_data);
if (result == 0) {
cache.Clear(addr_type, bda);
LOG_WARN(LOG_TAG,
"%s device no longer discoverable, discarding advertising packet",
__func__);
return;
}
if (!update) result &= ~BTM_BLE_INQ_RESULT;
/* If the number of responses found and limited, issue a cancel inquiry */
if (p_inq->inqparms.max_resps &&
p_inq->inq_cmpl_info.num_resp == p_inq->inqparms.max_resps) {
/* new device */
if (p_i == NULL ||
/* assume a DUMO device, BR/EDR inquiry is always active */
(p_i &&
(p_i->inq_info.results.device_type & BT_DEVICE_TYPE_BLE) ==
BT_DEVICE_TYPE_BLE &&
p_i->scan_rsp)) {
BTM_TRACE_WARNING(
"INQ RES: Extra Response Received...cancelling inquiry..");
/* if is non-periodic inquiry active, cancel now */
if ((p_inq->inq_active & BTM_BR_INQ_ACTIVE_MASK) != 0 &&
(p_inq->inq_active & BTM_PERIODIC_INQUIRY_ACTIVE) == 0)
btsnd_hcic_inq_cancel();
btm_ble_stop_inquiry();
btm_acl_update_busy_level(BTM_BLI_INQ_DONE_EVT);
}
}
tBTM_INQ_RESULTS_CB* p_inq_results_cb = p_inq->p_inq_results_cb;
if (p_inq_results_cb && (result & BTM_BLE_INQ_RESULT)) {
(p_inq_results_cb)((tBTM_INQ_RESULTS*)&p_i->inq_info.results,
const_cast<uint8_t*>(adv_data.data()), adv_data.size());
}
tBTM_INQ_RESULTS_CB* p_obs_results_cb = btm_cb.ble_ctr_cb.p_obs_results_cb;
if (p_obs_results_cb && (result & BTM_BLE_OBS_RESULT)) {
(p_obs_results_cb)((tBTM_INQ_RESULTS*)&p_i->inq_info.results,
const_cast<uint8_t*>(adv_data.data()), adv_data.size());
}
cache.Clear(addr_type, bda);
}
void btm_ble_process_phy_update_pkt(uint8_t len, uint8_t* data) {
uint8_t status, tx_phy, rx_phy;
uint16_t handle;
LOG_ASSERT(len == 5);
uint8_t* p = data;
STREAM_TO_UINT8(status, p);
STREAM_TO_UINT16(handle, p);
handle = handle & 0x0FFF;
STREAM_TO_UINT8(tx_phy, p);
STREAM_TO_UINT8(rx_phy, p);
gatt_notify_phy_updated(status, handle, tx_phy, rx_phy);
}
/*******************************************************************************
*
* Function btm_ble_start_scan
*
* Description Start the BLE scan.
*
* Returns void
*
******************************************************************************/
tBTM_STATUS btm_ble_start_scan(void) {
tBTM_BLE_INQ_CB* p_inq = &btm_cb.ble_ctr_cb.inq_var;
/* start scan, disable duplicate filtering */
btm_send_hci_scan_enable(BTM_BLE_SCAN_ENABLE, p_inq->scan_duplicate_filter);
if (p_inq->scan_type == BTM_BLE_SCAN_MODE_ACTI)
btm_ble_set_topology_mask(BTM_BLE_STATE_ACTIVE_SCAN_BIT);
else
btm_ble_set_topology_mask(BTM_BLE_STATE_PASSIVE_SCAN_BIT);
return BTM_CMD_STARTED;
}
/*******************************************************************************
*
* Function btm_ble_stop_scan
*
* Description Stop the BLE scan.
*
* Returns void
*
******************************************************************************/
void btm_ble_stop_scan(void) {
BTM_TRACE_EVENT("btm_ble_stop_scan ");
if (btm_cb.ble_ctr_cb.inq_var.scan_type == BTM_BLE_SCAN_MODE_ACTI)
btm_ble_clear_topology_mask(BTM_BLE_STATE_ACTIVE_SCAN_BIT);
else
btm_ble_clear_topology_mask(BTM_BLE_STATE_PASSIVE_SCAN_BIT);
/* Clear the inquiry callback if set */
btm_cb.ble_ctr_cb.inq_var.scan_type = BTM_BLE_SCAN_MODE_NONE;
/* stop discovery now */
btm_send_hci_scan_enable(BTM_BLE_SCAN_DISABLE, BTM_BLE_DUPLICATE_ENABLE);
btm_update_scanner_filter_policy(SP_ADV_ALL);
}
/*******************************************************************************
*
* Function btm_ble_stop_inquiry
*
* Description Stop the BLE Inquiry.
*
* Returns void
*
******************************************************************************/
void btm_ble_stop_inquiry(void) {
tBTM_INQUIRY_VAR_ST* p_inq = &btm_cb.btm_inq_vars;
tBTM_BLE_CB* p_ble_cb = &btm_cb.ble_ctr_cb;
alarm_cancel(p_ble_cb->inq_var.inquiry_timer);
p_ble_cb->scan_activity &= ~BTM_BLE_INQUIRY_MASK;
/* If no more scan activity, stop LE scan now */
if (!BTM_BLE_IS_SCAN_ACTIVE(p_ble_cb->scan_activity))
btm_ble_stop_scan();
else if ((p_ble_cb->inq_var.scan_interval != BTM_BLE_LOW_LATENCY_SCAN_INT) ||
(p_ble_cb->inq_var.scan_window != BTM_BLE_LOW_LATENCY_SCAN_WIN)) {
BTM_TRACE_DEBUG("%s: setting default params for ongoing observe", __func__);
btm_ble_stop_scan();
btm_ble_start_scan();
}
/* If we have a callback registered for inquiry complete, call it */
BTM_TRACE_DEBUG("BTM Inq Compl Callback: status 0x%02x, num results %d",
p_inq->inq_cmpl_info.status, p_inq->inq_cmpl_info.num_resp);
btm_process_inq_complete(
HCI_SUCCESS, (uint8_t)(p_inq->inqparms.mode & BTM_BLE_INQUIRY_MASK));
}
/*******************************************************************************
*
* Function btm_ble_stop_observe
*
* Description Stop the BLE Observe.
*
* Returns void
*
******************************************************************************/
static void btm_ble_stop_observe(void) {
tBTM_BLE_CB* p_ble_cb = &btm_cb.ble_ctr_cb;
tBTM_CMPL_CB* p_obs_cb = p_ble_cb->p_obs_cmpl_cb;
alarm_cancel(p_ble_cb->observer_timer);
p_ble_cb->scan_activity &= ~BTM_LE_OBSERVE_ACTIVE;
p_ble_cb->p_obs_results_cb = NULL;
p_ble_cb->p_obs_cmpl_cb = NULL;
if (!BTM_BLE_IS_SCAN_ACTIVE(p_ble_cb->scan_activity)) btm_ble_stop_scan();
if (p_obs_cb) (p_obs_cb)(&btm_cb.btm_inq_vars.inq_cmpl_info);
}
/*******************************************************************************
*
* Function btm_ble_adv_states_operation
*
* Description Set or clear adv states in topology mask
*
* Returns operation status. true if sucessful, false otherwise.
*
******************************************************************************/
typedef bool(BTM_TOPOLOGY_FUNC_PTR)(tBTM_BLE_STATE_MASK);
static bool btm_ble_adv_states_operation(BTM_TOPOLOGY_FUNC_PTR* p_handler,
uint8_t adv_evt) {
bool rt = false;
switch (adv_evt) {
case BTM_BLE_CONNECT_EVT:
rt = (*p_handler)(BTM_BLE_STATE_CONN_ADV_BIT);
break;
case BTM_BLE_NON_CONNECT_EVT:
rt = (*p_handler)(BTM_BLE_STATE_NON_CONN_ADV_BIT);
break;
case BTM_BLE_CONNECT_DIR_EVT:
rt = (*p_handler)(BTM_BLE_STATE_HI_DUTY_DIR_ADV_BIT);
break;
case BTM_BLE_DISCOVER_EVT:
rt = (*p_handler)(BTM_BLE_STATE_SCAN_ADV_BIT);
break;
case BTM_BLE_CONNECT_LO_DUTY_DIR_EVT:
rt = (*p_handler)(BTM_BLE_STATE_LO_DUTY_DIR_ADV_BIT);
break;
default:
BTM_TRACE_ERROR("unknown adv event : %d", adv_evt);
break;
}
return rt;
}
/*******************************************************************************
*
* Function btm_ble_start_adv
*
* Description start the BLE advertising.
*
* Returns void
*
******************************************************************************/
tBTM_STATUS btm_ble_start_adv(void) {
tBTM_BLE_INQ_CB* p_cb = &btm_cb.ble_ctr_cb.inq_var;
if (!btm_ble_adv_states_operation(btm_ble_topology_check, p_cb->evt_type))
return BTM_WRONG_MODE;
#if (BLE_PRIVACY_SPT == TRUE)
/* To relax resolving list, always have resolving list enabled, unless
* directed adv */
if (p_cb->evt_type != BTM_BLE_CONNECT_LO_DUTY_DIR_EVT &&
p_cb->evt_type != BTM_BLE_CONNECT_DIR_EVT)
/* enable resolving list is desired */
btm_ble_enable_resolving_list_for_platform(BTM_BLE_RL_ADV);
#endif
btsnd_hcic_ble_set_adv_enable(BTM_BLE_ADV_ENABLE);
p_cb->adv_mode = BTM_BLE_ADV_ENABLE;
btm_ble_adv_states_operation(btm_ble_set_topology_mask, p_cb->evt_type);
return BTM_SUCCESS;
}
/*******************************************************************************
*
* Function btm_ble_stop_adv
*
* Description Stop the BLE advertising.
*
* Returns void
*
******************************************************************************/
tBTM_STATUS btm_ble_stop_adv(void) {
tBTM_BLE_INQ_CB* p_cb = &btm_cb.ble_ctr_cb.inq_var;
if (p_cb->adv_mode == BTM_BLE_ADV_ENABLE) {
btsnd_hcic_ble_set_adv_enable(BTM_BLE_ADV_DISABLE);
p_cb->fast_adv_on = false;
p_cb->adv_mode = BTM_BLE_ADV_DISABLE;
/* clear all adv states */
btm_ble_clear_topology_mask(BTM_BLE_STATE_ALL_ADV_MASK);
}
return BTM_SUCCESS;
}
static void btm_ble_fast_adv_timer_timeout(UNUSED_ATTR void* data) {
/* fast adv is completed, fall back to slow adv interval */
btm_ble_start_slow_adv();
}
/*******************************************************************************
*
* Function btm_ble_start_slow_adv
*
* Description Restart adv with slow adv interval
*
* Returns void
*
******************************************************************************/
static void btm_ble_start_slow_adv(void) {
tBTM_BLE_INQ_CB* p_cb = &btm_cb.ble_ctr_cb.inq_var;
if (p_cb->adv_mode == BTM_BLE_ADV_ENABLE) {
tBTM_LE_RANDOM_CB* p_addr_cb = &btm_cb.ble_ctr_cb.addr_mgnt_cb;
RawAddress address = RawAddress::kEmpty;
tBLE_ADDR_TYPE init_addr_type = BLE_ADDR_PUBLIC;
tBLE_ADDR_TYPE own_addr_type = p_addr_cb->own_addr_type;
btm_ble_stop_adv();
p_cb->evt_type = btm_set_conn_mode_adv_init_addr(
p_cb, address, &init_addr_type, &own_addr_type);
/* slow adv mode never goes into directed adv */
btsnd_hcic_ble_write_adv_params(
BTM_BLE_GAP_ADV_SLOW_INT, BTM_BLE_GAP_ADV_SLOW_INT, p_cb->evt_type,
own_addr_type, init_addr_type, address, p_cb->adv_chnl_map, p_cb->afp);
btm_ble_start_adv();
}
}
static void btm_ble_inquiry_timer_gap_limited_discovery_timeout(
UNUSED_ATTR void* data) {
/* lim_timeout expired, limited discovery should exit now */
btm_cb.btm_inq_vars.discoverable_mode &= ~BTM_BLE_LIMITED_DISCOVERABLE;
btm_ble_set_adv_flag(btm_cb.btm_inq_vars.connectable_mode,
btm_cb.btm_inq_vars.discoverable_mode);
}
static void btm_ble_inquiry_timer_timeout(UNUSED_ATTR void* data) {
btm_ble_stop_inquiry();
}
static void btm_ble_observer_timer_timeout(UNUSED_ATTR void* data) {
btm_ble_stop_observe();
}
void btm_ble_refresh_raddr_timer_timeout(UNUSED_ATTR void* data) {
if (btm_cb.ble_ctr_cb.addr_mgnt_cb.own_addr_type == BLE_ADDR_RANDOM) {
/* refresh the random addr */
btm_gen_resolvable_private_addr(base::Bind(&btm_gen_resolve_paddr_low));
}
}
/*******************************************************************************
*
* Function btm_ble_read_remote_features_complete
*
* Description This function is called when the command complete message
* is received from the HCI for the read LE remote feature
* supported complete event.
*
* Returns void
*
******************************************************************************/
void btm_ble_read_remote_features_complete(uint8_t* p) {
BTM_TRACE_EVENT("%s", __func__);
uint16_t handle;
uint8_t status;
STREAM_TO_UINT8(status, p);
STREAM_TO_UINT16(handle, p);
handle = handle & 0x0FFF; // only 12 bits meaningful
if (status != HCI_SUCCESS) {
BTM_TRACE_ERROR("%s: failed for handle: 0x%04d, status 0x%02x", __func__,
handle, status);
if (status != HCI_ERR_UNSUPPORTED_REM_FEATURE) return;
}
int idx = btm_handle_to_acl_index(handle);
if (idx == MAX_L2CAP_LINKS) {
BTM_TRACE_ERROR("%s: can't find acl for handle: 0x%04d", __func__, handle);
return;
}
if (status == HCI_SUCCESS) {
STREAM_TO_ARRAY(btm_cb.acl_db[idx].peer_le_features, p, BD_FEATURES_LEN);
}
btsnd_hcic_rmt_ver_req(handle);
}
/*******************************************************************************
*
* Function btm_ble_write_adv_enable_complete
*
* Description This function process the write adv enable command complete.
*
* Returns void
*
******************************************************************************/
void btm_ble_write_adv_enable_complete(uint8_t* p) {
tBTM_BLE_INQ_CB* p_cb = &btm_cb.ble_ctr_cb.inq_var;
/* if write adv enable/disbale not succeed */
if (*p != HCI_SUCCESS) {
/* toggle back the adv mode */
p_cb->adv_mode = !p_cb->adv_mode;
}
}
/*******************************************************************************
*
* Function btm_ble_dir_adv_tout
*
* Description when directed adv time out
*
* Returns void
*
******************************************************************************/
void btm_ble_dir_adv_tout(void) {
btm_cb.ble_ctr_cb.inq_var.adv_mode = BTM_BLE_ADV_DISABLE;
/* make device fall back into undirected adv mode by default */
btm_cb.ble_ctr_cb.inq_var.directed_conn = false;
}
/*******************************************************************************
*
* Function btm_ble_set_topology_mask
*
* Description set BLE topology mask
*
* Returns true is request is allowed, false otherwise.
*
******************************************************************************/
bool btm_ble_set_topology_mask(tBTM_BLE_STATE_MASK request_state_mask) {
request_state_mask &= BTM_BLE_STATE_ALL_MASK;
btm_cb.ble_ctr_cb.cur_states |= (request_state_mask & BTM_BLE_STATE_ALL_MASK);
return true;
}
/*******************************************************************************
*
* Function btm_ble_clear_topology_mask
*
* Description Clear BLE topology bit mask
*
* Returns true is request is allowed, false otherwise.
*
******************************************************************************/
bool btm_ble_clear_topology_mask(tBTM_BLE_STATE_MASK request_state_mask) {
request_state_mask &= BTM_BLE_STATE_ALL_MASK;
btm_cb.ble_ctr_cb.cur_states &= ~request_state_mask;
return true;
}
/*******************************************************************************
*
* Function btm_ble_update_link_topology_mask
*
* Description This function update the link topology mask
*
* Returns void
*
******************************************************************************/
void btm_ble_update_link_topology_mask(uint8_t link_role, bool increase) {
btm_ble_clear_topology_mask(BTM_BLE_STATE_ALL_CONN_MASK);
if (increase)
btm_cb.ble_ctr_cb.link_count[link_role]++;
else if (btm_cb.ble_ctr_cb.link_count[link_role] > 0)
btm_cb.ble_ctr_cb.link_count[link_role]--;
if (btm_cb.ble_ctr_cb.link_count[HCI_ROLE_MASTER])
btm_ble_set_topology_mask(BTM_BLE_STATE_MASTER_BIT);
if (btm_cb.ble_ctr_cb.link_count[HCI_ROLE_SLAVE])
btm_ble_set_topology_mask(BTM_BLE_STATE_SLAVE_BIT);
if (link_role == HCI_ROLE_SLAVE && increase) {
btm_cb.ble_ctr_cb.inq_var.adv_mode = BTM_BLE_ADV_DISABLE;
/* make device fall back into undirected adv mode by default */
btm_cb.ble_ctr_cb.inq_var.directed_conn = BTM_BLE_CONNECT_EVT;
/* clear all adv states */
btm_ble_clear_topology_mask(BTM_BLE_STATE_ALL_ADV_MASK);
}
}
/*******************************************************************************
*
* Function btm_ble_update_mode_operation
*
* Description This function update the GAP role operation when a link
* status is updated.
*
* Returns void
*
******************************************************************************/
void btm_ble_update_mode_operation(uint8_t link_role, const RawAddress* bd_addr,
uint8_t status) {
if (status == HCI_ERR_ADVERTISING_TIMEOUT) {
btm_cb.ble_ctr_cb.inq_var.adv_mode = BTM_BLE_ADV_DISABLE;
/* make device fall back into undirected adv mode by default */
btm_cb.ble_ctr_cb.inq_var.directed_conn = BTM_BLE_CONNECT_EVT;
/* clear all adv states */
btm_ble_clear_topology_mask(BTM_BLE_STATE_ALL_ADV_MASK);
}
if (btm_cb.ble_ctr_cb.inq_var.connectable_mode == BTM_BLE_CONNECTABLE) {
btm_ble_set_connectability(btm_cb.btm_inq_vars.connectable_mode |
btm_cb.ble_ctr_cb.inq_var.connectable_mode);
}
/* in case of disconnected, we must cancel bgconn and restart
in order to add back device to white list in order to reconnect */
if (bd_addr) btm_ble_bgconn_cancel_if_disconnected(*bd_addr);
/* when no connection is attempted, and controller is not rejecting last
request
due to resource limitation, start next direct connection or background
connection
now in order */
if (btm_ble_get_conn_st() == BLE_CONN_IDLE &&
status != HCI_ERR_HOST_REJECT_RESOURCES &&
status != HCI_ERR_MAX_NUM_OF_CONNECTIONS) {
btm_ble_resume_bg_conn();
}
}
/*******************************************************************************
*
* Function btm_ble_init
*
* Description Initialize the control block variable values.
*
* Returns void
*
******************************************************************************/
void btm_ble_init(void) {
tBTM_BLE_CB* p_cb = &btm_cb.ble_ctr_cb;
BTM_TRACE_DEBUG("%s", __func__);
alarm_free(p_cb->observer_timer);
alarm_free(p_cb->inq_var.fast_adv_timer);
memset(p_cb, 0, sizeof(tBTM_BLE_CB));
memset(&(btm_cb.cmn_ble_vsc_cb), 0, sizeof(tBTM_BLE_VSC_CB));
btm_cb.cmn_ble_vsc_cb.values_read = false;
p_cb->observer_timer = alarm_new("btm_ble.observer_timer");
p_cb->cur_states = 0;
p_cb->inq_var.adv_mode = BTM_BLE_ADV_DISABLE;
p_cb->inq_var.scan_type = BTM_BLE_SCAN_MODE_NONE;
p_cb->inq_var.adv_chnl_map = BTM_BLE_DEFAULT_ADV_CHNL_MAP;
p_cb->inq_var.afp = BTM_BLE_DEFAULT_AFP;
p_cb->inq_var.sfp = BTM_BLE_DEFAULT_SFP;
p_cb->inq_var.connectable_mode = BTM_BLE_NON_CONNECTABLE;
p_cb->inq_var.discoverable_mode = BTM_BLE_NON_DISCOVERABLE;
p_cb->inq_var.fast_adv_timer = alarm_new("btm_ble_inq.fast_adv_timer");
p_cb->inq_var.inquiry_timer = alarm_new("btm_ble_inq.inquiry_timer");
/* for background connection, reset connection params to be undefined */
p_cb->scan_int = p_cb->scan_win = BTM_BLE_SCAN_PARAM_UNDEF;
p_cb->inq_var.evt_type = BTM_BLE_NON_CONNECT_EVT;
p_cb->addr_mgnt_cb.refresh_raddr_timer =
alarm_new("btm_ble_addr.refresh_raddr_timer");
#if (BLE_VND_INCLUDED == FALSE)
btm_ble_adv_filter_init();
#endif
}
/*******************************************************************************
*
* Function btm_ble_topology_check
*
* Description check to see requested state is supported. One state check
* at a time is supported
*
* Returns true is request is allowed, false otherwise.
*
******************************************************************************/
bool btm_ble_topology_check(tBTM_BLE_STATE_MASK request_state_mask) {
bool rt = false;
uint8_t state_offset = 0;
uint16_t cur_states = btm_cb.ble_ctr_cb.cur_states;
uint8_t request_state = 0;
/* check only one bit is set and within valid range */
if (request_state_mask == BTM_BLE_STATE_INVALID ||
request_state_mask > BTM_BLE_STATE_SCAN_ADV_BIT ||
(request_state_mask & (request_state_mask - 1)) != 0) {
BTM_TRACE_ERROR("illegal state requested: %d", request_state_mask);
return rt;
}
while (request_state_mask) {
request_state_mask >>= 1;
request_state++;
}
/* check if the requested state is supported or not */
uint8_t bit_num = btm_le_state_combo_tbl[0][request_state - 1];
const uint8_t* ble_supported_states =
controller_get_interface()->get_ble_supported_states();
if (!BTM_LE_STATES_SUPPORTED(ble_supported_states, bit_num)) {
BTM_TRACE_ERROR("state requested not supported: %d", request_state);
return rt;
}
rt = true;
/* make sure currently active states are all supported in conjunction with the
requested state. If the bit in table is UNSUPPORTED, the combination is not
supported */
while (cur_states != 0) {
if (cur_states & 0x01) {
uint8_t bit_num = btm_le_state_combo_tbl[request_state][state_offset];
if (bit_num != UNSUPPORTED) {
if (!BTM_LE_STATES_SUPPORTED(ble_supported_states, bit_num)) {
rt = false;
break;
}
}
}
cur_states >>= 1;
state_offset++;
}
return rt;
}