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587 lines
20 KiB
587 lines
20 KiB
/******************************************************************************
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*
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* Copyright 2014 Broadcom Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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#include <base/bind.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <string.h>
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#include <vector>
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#include "bt_target.h"
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#include "bt_types.h"
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#include "btm_ble_api.h"
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#include "btm_int.h"
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#include "btu.h"
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#include "device/include/controller.h"
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#include "hcimsgs.h"
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#include "stack/btm/btm_int_types.h"
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#include "utils/include/bt_utils.h"
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extern tBTM_CB btm_cb;
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using base::Bind;
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using base::Callback;
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using hci_cmd_cb = base::Callback<void(uint8_t* /* return_parameters */,
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uint16_t /* return_parameters_length*/)>;
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tBTM_BLE_BATCH_SCAN_CB ble_batchscan_cb;
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tBTM_BLE_ADV_TRACK_CB ble_advtrack_cb;
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/* length of each batch scan command */
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#define BTM_BLE_BATCH_SCAN_STORAGE_CFG_LEN 4
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#define BTM_BLE_BATCH_SCAN_PARAM_CONFIG_LEN 12
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#define BTM_BLE_BATCH_SCAN_ENB_DISB_LEN 2
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#define BTM_BLE_BATCH_SCAN_READ_RESULTS_LEN 2
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namespace {
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bool can_do_batch_scan() {
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if (!controller_get_interface()->supports_ble()) return false;
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tBTM_BLE_VSC_CB cmn_ble_vsc_cb;
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BTM_BleGetVendorCapabilities(&cmn_ble_vsc_cb);
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if (cmn_ble_vsc_cb.tot_scan_results_strg == 0) return false;
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return true;
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}
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/* VSE callback for batch scan, filter, and tracking events */
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void btm_ble_batchscan_filter_track_adv_vse_cback(uint8_t len, uint8_t* p) {
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tBTM_BLE_TRACK_ADV_DATA adv_data{};
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uint8_t sub_event = 0;
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tBTM_BLE_VSC_CB cmn_ble_vsc_cb;
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if (len < 1)
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goto err_out;
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STREAM_TO_UINT8(sub_event, p);
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len -= 1;
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BTM_TRACE_EVENT(
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"btm_ble_batchscan_filter_track_adv_vse_cback called with event:%x",
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sub_event);
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if (HCI_VSE_SUBCODE_BLE_THRESHOLD_SUB_EVT == sub_event &&
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NULL != ble_batchscan_cb.p_thres_cback) {
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ble_batchscan_cb.p_thres_cback(ble_batchscan_cb.ref_value);
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return;
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}
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if (HCI_VSE_SUBCODE_BLE_TRACKING_SUB_EVT == sub_event &&
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NULL != ble_advtrack_cb.p_track_cback) {
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BTM_BleGetVendorCapabilities(&cmn_ble_vsc_cb);
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adv_data.client_if = (uint8_t)ble_advtrack_cb.ref_value;
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if (cmn_ble_vsc_cb.version_supported > BTM_VSC_CHIP_CAPABILITY_L_VERSION) {
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if (len < 10) {
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goto err_out;
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}
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STREAM_TO_UINT8(adv_data.filt_index, p);
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STREAM_TO_UINT8(adv_data.advertiser_state, p);
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STREAM_TO_UINT8(adv_data.advertiser_info_present, p);
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STREAM_TO_BDADDR(adv_data.bd_addr, p);
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STREAM_TO_UINT8(adv_data.addr_type, p);
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len -= 10;
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/* Extract the adv info details */
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if (ADV_INFO_PRESENT == adv_data.advertiser_info_present) {
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if (len < 5) {
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goto err_out;
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}
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STREAM_TO_UINT8(adv_data.tx_power, p);
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STREAM_TO_UINT8(adv_data.rssi_value, p);
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STREAM_TO_UINT16(adv_data.time_stamp, p);
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STREAM_TO_UINT8(adv_data.adv_pkt_len, p);
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len -= 5;
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if (adv_data.adv_pkt_len > 0) {
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adv_data.p_adv_pkt_data =
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static_cast<uint8_t*>(osi_malloc(adv_data.adv_pkt_len));
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if (adv_data.p_adv_pkt_data == nullptr || \
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len < adv_data.adv_pkt_len) {
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goto err_out;
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}
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memcpy(adv_data.p_adv_pkt_data, p, adv_data.adv_pkt_len);
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len -= adv_data.adv_pkt_len;
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p += adv_data.adv_pkt_len;
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}
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STREAM_TO_UINT8(adv_data.scan_rsp_len, p);
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if (adv_data.scan_rsp_len > 0) {
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adv_data.p_scan_rsp_data =
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static_cast<uint8_t*>(osi_malloc(adv_data.scan_rsp_len));
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if (adv_data.p_scan_rsp_data == nullptr || len < adv_data.scan_rsp_len) {
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goto err_out;
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}
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memcpy(adv_data.p_scan_rsp_data, p, adv_data.scan_rsp_len);
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}
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}
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} else {
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/* Based on L-release version */
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if (len < 9) {
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goto err_out;
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}
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STREAM_TO_UINT8(adv_data.filt_index, p);
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STREAM_TO_UINT8(adv_data.addr_type, p);
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STREAM_TO_BDADDR(adv_data.bd_addr, p);
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STREAM_TO_UINT8(adv_data.advertiser_state, p);
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}
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BTM_TRACE_EVENT("track_adv_vse_cback called: %d, %d, %d",
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adv_data.filt_index, adv_data.addr_type,
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adv_data.advertiser_state);
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// Make sure the device is known
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BTM_SecAddBleDevice(adv_data.bd_addr, BT_DEVICE_TYPE_BLE,
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adv_data.addr_type);
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ble_advtrack_cb.p_track_cback(&adv_data);
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}
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return;
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err_out:
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BTM_TRACE_ERROR("malformatted packet detected");
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osi_free_and_reset((void **) &adv_data.p_adv_pkt_data);
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osi_free_and_reset((void **) &adv_data.p_scan_rsp_data);
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}
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void feat_enable_cb(uint8_t* p, uint16_t len) {
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if (len < 2) {
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BTM_TRACE_ERROR("%s: wrong length", __func__);
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return;
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}
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uint8_t status, subcode;
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STREAM_TO_UINT8(status, p);
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STREAM_TO_UINT8(subcode, p);
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uint8_t expected_opcode = BTM_BLE_BATCH_SCAN_ENB_DISAB_CUST_FEATURE;
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if (subcode != expected_opcode) {
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BTM_TRACE_ERROR("%s: bad subcode, expected: %d got: %d", __func__,
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expected_opcode, subcode);
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return;
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}
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if (ble_batchscan_cb.cur_state != BTM_BLE_SCAN_ENABLE_CALLED)
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BTM_TRACE_ERROR("%s: state should be ENABLE_CALLED", __func__);
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ble_batchscan_cb.cur_state = BTM_BLE_SCAN_ENABLED_STATE;
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}
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void storage_config_cb(Callback<void(uint8_t /* status */)> cb, uint8_t* p,
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uint16_t len) {
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if (len < 2) {
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BTM_TRACE_ERROR("%s: wrong length", __func__);
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return;
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}
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uint8_t status, subcode;
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STREAM_TO_UINT8(status, p);
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STREAM_TO_UINT8(subcode, p);
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uint8_t expected_opcode = BTM_BLE_BATCH_SCAN_SET_STORAGE_PARAM;
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if (subcode != expected_opcode) {
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BTM_TRACE_ERROR("%s: bad subcode, expected: %d got: %d", __func__,
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expected_opcode, subcode);
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return;
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}
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cb.Run(status);
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}
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void param_enable_cb(Callback<void(uint8_t /* status */)> cb, uint8_t* p,
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uint16_t len) {
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if (len < 2) {
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BTM_TRACE_ERROR("%s: wrong length", __func__);
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return;
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}
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uint8_t status, subcode;
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STREAM_TO_UINT8(status, p);
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STREAM_TO_UINT8(subcode, p);
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uint8_t expected_opcode = BTM_BLE_BATCH_SCAN_SET_PARAMS;
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if (subcode != expected_opcode) {
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BTM_TRACE_ERROR("%s: bad subcode: 0x%02x 0x%02x", __func__, expected_opcode,
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subcode);
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return;
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}
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cb.Run(status);
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}
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void disable_cb(base::Callback<void(uint8_t /* status */)> cb, uint8_t* p,
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uint16_t len) {
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if (len < 2) {
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BTM_TRACE_ERROR("%s: wrong length", __func__);
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return;
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}
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uint8_t status, subcode;
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STREAM_TO_UINT8(status, p);
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STREAM_TO_UINT8(subcode, p);
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uint8_t expected_opcode = BTM_BLE_BATCH_SCAN_SET_PARAMS;
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if (subcode != expected_opcode) {
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BTM_TRACE_ERROR("%s: bad subcode: 0x%02x 0x%02x", __func__, expected_opcode,
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subcode);
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return;
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}
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if (ble_batchscan_cb.cur_state != BTM_BLE_SCAN_DISABLE_CALLED) {
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BTM_TRACE_ERROR("%s: state should be DISABLE_CALLED", __func__);
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}
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if (BTM_SUCCESS == status) {
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ble_batchscan_cb.cur_state = BTM_BLE_SCAN_DISABLED_STATE;
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} else {
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BTM_TRACE_ERROR("%s: Invalid state after disabled", __func__);
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ble_batchscan_cb.cur_state = BTM_BLE_SCAN_INVALID_STATE;
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}
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cb.Run(status);
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}
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/**
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* This function reads the reports from controller. |scan_mode| is the mode for
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* which the reports are to be read
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*/
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void btm_ble_read_batchscan_reports(tBTM_BLE_BATCH_SCAN_MODE scan_mode,
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hci_cmd_cb cb) {
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uint8_t len = BTM_BLE_BATCH_SCAN_READ_RESULTS_LEN;
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uint8_t param[len];
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memset(param, 0, len);
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uint8_t* pp = param;
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UINT8_TO_STREAM(pp, BTM_BLE_BATCH_SCAN_READ_RESULTS);
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UINT8_TO_STREAM(pp, scan_mode);
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btu_hcif_send_cmd_with_cb(FROM_HERE, HCI_BLE_BATCH_SCAN, param, len, cb);
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}
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/* read reports. data is accumulated in |data_all|, number of records is
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* accumulated in |num_records_all| */
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void read_reports_cb(std::vector<uint8_t> data_all, uint8_t num_records_all,
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tBTM_BLE_SCAN_REP_CBACK cb, uint8_t* p, uint16_t len) {
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if (len < 2) {
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BTM_TRACE_ERROR("%s: wrong length", __func__);
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return;
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}
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uint8_t status, subcode;
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STREAM_TO_UINT8(status, p);
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STREAM_TO_UINT8(subcode, p);
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uint8_t expected_opcode = BTM_BLE_BATCH_SCAN_READ_RESULTS;
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if (subcode != expected_opcode) {
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BTM_TRACE_ERROR("%s: bad subcode, expected: %d got: %d", __func__,
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expected_opcode, subcode);
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return;
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}
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if (len < 4) {
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BTM_TRACE_ERROR("%s: wrong length", __func__);
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return;
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}
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uint8_t report_format, num_records;
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STREAM_TO_UINT8(report_format, p);
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STREAM_TO_UINT8(num_records, p);
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BTM_TRACE_DEBUG("%s: status=%d,len=%d,rec=%d", __func__, status, len - 4,
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num_records);
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if (num_records == 0) {
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cb.Run(BTM_SUCCESS, report_format, num_records_all, data_all);
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return;
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}
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if (len > 4) {
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data_all.insert(data_all.end(), p, p + len - 4);
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num_records_all += num_records;
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/* More records could be in the buffer and needs to be pulled out */
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btm_ble_read_batchscan_reports(
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report_format, base::Bind(&read_reports_cb, std::move(data_all),
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num_records_all, std::move(cb)));
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}
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}
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/**
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* This function writes the storage configuration in controller
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*
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* Parameters batch_scan_full_max - Max storage space (in %) allocated to
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* full scanning
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* batch_scan_trunc_max - Max storage space (in %) allocated to
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* truncated scanning
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* batch_scan_notify_threshold - Set up notification level
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* based on total space
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*
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**/
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void btm_ble_set_storage_config(uint8_t batch_scan_full_max,
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uint8_t batch_scan_trunc_max,
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uint8_t batch_scan_notify_threshold,
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hci_cmd_cb cb) {
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uint8_t len = BTM_BLE_BATCH_SCAN_STORAGE_CFG_LEN;
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uint8_t param[len];
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memset(param, 0, len);
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uint8_t* pp = param;
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UINT8_TO_STREAM(pp, BTM_BLE_BATCH_SCAN_SET_STORAGE_PARAM);
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UINT8_TO_STREAM(pp, batch_scan_full_max);
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UINT8_TO_STREAM(pp, batch_scan_trunc_max);
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UINT8_TO_STREAM(pp, batch_scan_notify_threshold);
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btu_hcif_send_cmd_with_cb(FROM_HERE, HCI_BLE_BATCH_SCAN, param, len, cb);
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}
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/* This function writes the batch scan params in controller */
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void btm_ble_set_batchscan_param(tBTM_BLE_BATCH_SCAN_MODE scan_mode,
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uint32_t scan_interval, uint32_t scan_window,
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tBLE_ADDR_TYPE addr_type,
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tBTM_BLE_DISCARD_RULE discard_rule,
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hci_cmd_cb cb) {
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// Override param and decide addr_type based on own addr type
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// TODO: Remove upper layer parameter?
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addr_type = btm_cb.ble_ctr_cb.addr_mgnt_cb.own_addr_type;
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uint8_t len = BTM_BLE_BATCH_SCAN_PARAM_CONFIG_LEN;
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uint8_t param[len];
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memset(param, 0, len);
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uint8_t* p = param;
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UINT8_TO_STREAM(p, BTM_BLE_BATCH_SCAN_SET_PARAMS);
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UINT8_TO_STREAM(p, scan_mode);
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UINT32_TO_STREAM(p, scan_window);
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UINT32_TO_STREAM(p, scan_interval);
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UINT8_TO_STREAM(p, addr_type);
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UINT8_TO_STREAM(p, discard_rule);
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btu_hcif_send_cmd_with_cb(FROM_HERE, HCI_BLE_BATCH_SCAN, param, len, cb);
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}
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/* This function enables the customer specific feature in controller */
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void btm_ble_enable_batchscan(hci_cmd_cb cb) {
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uint8_t len = BTM_BLE_BATCH_SCAN_ENB_DISB_LEN;
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uint8_t param[len];
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memset(param, 0, len);
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uint8_t* p = param;
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UINT8_TO_STREAM(p, BTM_BLE_BATCH_SCAN_ENB_DISAB_CUST_FEATURE);
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UINT8_TO_STREAM(p, 0x01 /* enable */);
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btu_hcif_send_cmd_with_cb(FROM_HERE, HCI_BLE_BATCH_SCAN, param, len, cb);
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}
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} // namespace
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/*******************************************************************************
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*
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* Description This function is called to write storage config params.
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*
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* Parameters: batch_scan_full_max - Max storage space (in %) allocated to
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* full style
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* batch_scan_trunc_max - Max storage space (in %) allocated to
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* trunc style
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* batch_scan_notify_threshold - Setup notification level based
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* on total space
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* cb - Setup callback pointer
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* p_thres_cback - Threshold callback pointer
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* ref_value - Reference value
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*
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******************************************************************************/
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void BTM_BleSetStorageConfig(uint8_t batch_scan_full_max,
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uint8_t batch_scan_trunc_max,
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uint8_t batch_scan_notify_threshold,
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Callback<void(uint8_t /* status */)> cb,
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tBTM_BLE_SCAN_THRESHOLD_CBACK* p_thres_cback,
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tBTM_BLE_REF_VALUE ref_value) {
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if (!can_do_batch_scan()) {
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cb.Run(BTM_ERR_PROCESSING);
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return;
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}
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BTM_TRACE_EVENT("%s: %d, %d, %d, %d, %d", __func__,
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ble_batchscan_cb.cur_state, ref_value, batch_scan_full_max,
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batch_scan_trunc_max, batch_scan_notify_threshold);
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ble_batchscan_cb.p_thres_cback = p_thres_cback;
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ble_batchscan_cb.ref_value = ref_value;
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if (batch_scan_full_max > BTM_BLE_ADV_SCAN_FULL_MAX ||
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batch_scan_trunc_max > BTM_BLE_ADV_SCAN_TRUNC_MAX ||
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batch_scan_notify_threshold > BTM_BLE_ADV_SCAN_THR_MAX) {
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BTM_TRACE_ERROR("Illegal set storage config params");
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cb.Run(BTM_ILLEGAL_VALUE);
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return;
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}
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if (BTM_BLE_SCAN_INVALID_STATE == ble_batchscan_cb.cur_state ||
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BTM_BLE_SCAN_DISABLED_STATE == ble_batchscan_cb.cur_state ||
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BTM_BLE_SCAN_DISABLE_CALLED == ble_batchscan_cb.cur_state) {
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btm_ble_enable_batchscan(Bind(&feat_enable_cb));
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ble_batchscan_cb.cur_state = BTM_BLE_SCAN_ENABLE_CALLED;
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}
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btm_ble_set_storage_config(batch_scan_full_max, batch_scan_trunc_max,
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batch_scan_notify_threshold,
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Bind(&storage_config_cb, cb));
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return;
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}
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/* This function is called to configure and enable batch scanning */
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void BTM_BleEnableBatchScan(tBTM_BLE_BATCH_SCAN_MODE scan_mode,
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uint32_t scan_interval, uint32_t scan_window,
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tBLE_ADDR_TYPE addr_type,
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tBTM_BLE_DISCARD_RULE discard_rule,
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Callback<void(uint8_t /* status */)> cb) {
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BTM_TRACE_EVENT("%s: %d, %d, %d, %d, %d, %d", __func__, scan_mode,
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scan_interval, scan_window, addr_type, discard_rule);
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if (!can_do_batch_scan()) {
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cb.Run(BTM_ERR_PROCESSING);
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return;
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}
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BTM_TRACE_DEBUG("%s: %d, %x, %x, %d, %d", __func__, scan_mode, scan_interval,
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scan_window, discard_rule, ble_batchscan_cb.cur_state);
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/* Only 16 bits will be used for scan interval and scan window as per
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* agreement with Google */
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/* So the standard LE range would suffice for scan interval and scan window */
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if ((BTM_BLE_ISVALID_PARAM(scan_interval, BTM_BLE_SCAN_INT_MIN,
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BTM_BLE_SCAN_INT_MAX) ||
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BTM_BLE_ISVALID_PARAM(scan_window, BTM_BLE_SCAN_WIN_MIN,
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BTM_BLE_SCAN_WIN_MAX)) &&
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(BTM_BLE_BATCH_SCAN_MODE_PASS == scan_mode ||
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BTM_BLE_BATCH_SCAN_MODE_ACTI == scan_mode ||
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BTM_BLE_BATCH_SCAN_MODE_PASS_ACTI == scan_mode) &&
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(BTM_BLE_DISCARD_OLD_ITEMS == discard_rule ||
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BTM_BLE_DISCARD_LOWER_RSSI_ITEMS == discard_rule)) {
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} else {
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BTM_TRACE_ERROR("%s: Illegal enable scan params", __func__);
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cb.Run(BTM_ILLEGAL_VALUE);
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return;
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}
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if (BTM_BLE_SCAN_INVALID_STATE == ble_batchscan_cb.cur_state ||
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BTM_BLE_SCAN_DISABLED_STATE == ble_batchscan_cb.cur_state ||
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BTM_BLE_SCAN_DISABLE_CALLED == ble_batchscan_cb.cur_state) {
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btm_ble_enable_batchscan(Bind(&feat_enable_cb));
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ble_batchscan_cb.cur_state = BTM_BLE_SCAN_ENABLE_CALLED;
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}
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ble_batchscan_cb.scan_mode = scan_mode;
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ble_batchscan_cb.scan_interval = scan_interval;
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ble_batchscan_cb.scan_window = scan_window;
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ble_batchscan_cb.addr_type = addr_type;
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ble_batchscan_cb.discard_rule = discard_rule;
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/* This command starts batch scanning, if enabled */
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btm_ble_set_batchscan_param(scan_mode, scan_interval, scan_window, addr_type,
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discard_rule, Bind(¶m_enable_cb, cb));
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}
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|
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/* This function is called to disable batch scanning */
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void BTM_BleDisableBatchScan(base::Callback<void(uint8_t /* status */)> cb) {
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BTM_TRACE_EVENT(" BTM_BleDisableBatchScan");
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|
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if (!can_do_batch_scan()) {
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cb.Run(BTM_ERR_PROCESSING);
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return;
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}
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|
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btm_ble_set_batchscan_param(
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BTM_BLE_BATCH_SCAN_MODE_DISABLE, ble_batchscan_cb.scan_interval,
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ble_batchscan_cb.scan_window, ble_batchscan_cb.addr_type,
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ble_batchscan_cb.discard_rule, Bind(&disable_cb, cb));
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ble_batchscan_cb.cur_state = BTM_BLE_SCAN_DISABLE_CALLED;
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}
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/* This function is called to start reading batch scan reports */
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void BTM_BleReadScanReports(tBTM_BLE_BATCH_SCAN_MODE scan_mode,
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|
tBTM_BLE_SCAN_REP_CBACK cb) {
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uint8_t read_scan_mode = 0;
|
|
|
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BTM_TRACE_EVENT("%s; %d", __func__, scan_mode);
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|
|
|
if (!can_do_batch_scan()) {
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|
BTM_TRACE_ERROR("Controller does not support batch scan");
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cb.Run(BTM_ERR_PROCESSING, 0, 0, {});
|
|
return;
|
|
}
|
|
|
|
/* Check if the requested scan mode has already been setup by the user */
|
|
read_scan_mode = ble_batchscan_cb.scan_mode & BTM_BLE_BATCH_SCAN_MODE_ACTI;
|
|
if (0 == read_scan_mode)
|
|
read_scan_mode = ble_batchscan_cb.scan_mode & BTM_BLE_BATCH_SCAN_MODE_PASS;
|
|
|
|
/* Check only for modes, as scan reports can be called after disabling batch
|
|
* scan */
|
|
if (scan_mode != BTM_BLE_BATCH_SCAN_MODE_PASS &&
|
|
scan_mode != BTM_BLE_BATCH_SCAN_MODE_ACTI) {
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|
BTM_TRACE_ERROR("Illegal read scan params: %d, %d, %d", read_scan_mode,
|
|
scan_mode, ble_batchscan_cb.cur_state);
|
|
cb.Run(BTM_ILLEGAL_VALUE, 0, 0, {});
|
|
return;
|
|
}
|
|
|
|
btm_ble_read_batchscan_reports(
|
|
scan_mode, base::Bind(&read_reports_cb, std::vector<uint8_t>(), 0, cb));
|
|
return;
|
|
}
|
|
|
|
/* This function is called to setup the callback for tracking */
|
|
void BTM_BleTrackAdvertiser(tBTM_BLE_TRACK_ADV_CBACK* p_track_cback,
|
|
tBTM_BLE_REF_VALUE ref_value) {
|
|
BTM_TRACE_EVENT("%s:", __func__);
|
|
|
|
if (!can_do_batch_scan()) {
|
|
BTM_TRACE_ERROR("Controller does not support batch scan");
|
|
|
|
tBTM_BLE_TRACK_ADV_DATA track_adv_data;
|
|
memset(&track_adv_data, 0, sizeof(tBTM_BLE_TRACK_ADV_DATA));
|
|
track_adv_data.advertiser_info_present =
|
|
NO_ADV_INFO_PRESENT; /* Indicates failure */
|
|
track_adv_data.client_if = (uint8_t)ref_value;
|
|
p_track_cback(&track_adv_data);
|
|
return;
|
|
}
|
|
|
|
ble_advtrack_cb.p_track_cback = p_track_cback;
|
|
ble_advtrack_cb.ref_value = ref_value;
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* This function initialize the batch scan control block.
|
|
**/
|
|
void btm_ble_batchscan_init(void) {
|
|
BTM_TRACE_EVENT(" btm_ble_batchscan_init");
|
|
memset(&ble_batchscan_cb, 0, sizeof(tBTM_BLE_BATCH_SCAN_CB));
|
|
memset(&ble_advtrack_cb, 0, sizeof(tBTM_BLE_ADV_TRACK_CB));
|
|
BTM_RegisterForVSEvents(btm_ble_batchscan_filter_track_adv_vse_cback, true);
|
|
}
|