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/*
* Copyright 2024 The Android Open Source Project
*
* 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.
*/
#define LOG_TAG "le_conn_params"
#include "common/le_conn_params.h"
#include <bluetooth/log.h>
#include <cstdint>
#include "os/system_properties.h"
#include "stack/include/btm_ble_api_types.h"
using namespace bluetooth;
const std::string LeConnectionParameters::kPropertyAggressiveConnThreshold =
"bluetooth.core.le.aggressive_connection_threshold";
const std::string LeConnectionParameters::kPropertyMinConnIntervalAggressive =
"bluetooth.core.le.min_connection_interval_aggressive";
const std::string LeConnectionParameters::kPropertyMaxConnIntervalAggressive =
"bluetooth.core.le.max_connection_interval_aggressive";
const std::string LeConnectionParameters::kPropertyMinConnIntervalRelaxed =
"bluetooth.core.le.min_connection_interval_relaxed";
const std::string LeConnectionParameters::kPropertyMaxConnIntervalRelaxed =
"bluetooth.core.le.max_connection_interval_relaxed";
bool LeConnectionParameters::initialized = false;
uint32_t LeConnectionParameters::aggressive_conn_threshold = kAggressiveConnThreshold;
uint32_t LeConnectionParameters::min_conn_interval_aggressive = kMinConnIntervalAggressive;
uint32_t LeConnectionParameters::max_conn_interval_aggressive = kMaxConnIntervalAggressive;
uint32_t LeConnectionParameters::min_conn_interval_relaxed = kMinConnIntervalRelaxed;
uint32_t LeConnectionParameters::max_conn_interval_relaxed = kMaxConnIntervalRelaxed;
void LeConnectionParameters::InitConnParamsWithSystemProperties() {
aggressive_conn_threshold =
os::GetSystemPropertyUint32(kPropertyAggressiveConnThreshold, kAggressiveConnThreshold);
min_conn_interval_aggressive = os::GetSystemPropertyUint32(kPropertyMinConnIntervalAggressive,
kMinConnIntervalAggressive);
max_conn_interval_aggressive = os::GetSystemPropertyUint32(kPropertyMaxConnIntervalAggressive,
kMaxConnIntervalAggressive);
min_conn_interval_relaxed =
os::GetSystemPropertyUint32(kPropertyMinConnIntervalRelaxed, kMinConnIntervalRelaxed);
max_conn_interval_relaxed =
os::GetSystemPropertyUint32(kPropertyMaxConnIntervalRelaxed, kMaxConnIntervalRelaxed);
log::debug("Before checking validity: threshold={}, aggressive={}/{}, relaxed={}/{}",
aggressive_conn_threshold, min_conn_interval_aggressive, max_conn_interval_aggressive,
min_conn_interval_relaxed, max_conn_interval_relaxed);
// Check validity of each values
if (aggressive_conn_threshold < 0) {
log::warn("Invalid aggressive connection threshold. Using default value.",
aggressive_conn_threshold);
aggressive_conn_threshold = kAggressiveConnThreshold;
}
if (min_conn_interval_aggressive < BTM_BLE_CONN_INT_MIN ||
min_conn_interval_aggressive > BTM_BLE_CONN_INT_MAX ||
max_conn_interval_aggressive < BTM_BLE_CONN_INT_MIN ||
max_conn_interval_aggressive > BTM_BLE_CONN_INT_MAX ||
max_conn_interval_aggressive < min_conn_interval_aggressive) {
log::warn("Invalid aggressive connection intervals. Using default values.");
min_conn_interval_aggressive = kMinConnIntervalAggressive;
max_conn_interval_aggressive = kMaxConnIntervalAggressive;
}
if (min_conn_interval_relaxed < BTM_BLE_CONN_INT_MIN ||
min_conn_interval_relaxed > BTM_BLE_CONN_INT_MAX ||
max_conn_interval_relaxed < BTM_BLE_CONN_INT_MIN ||
max_conn_interval_relaxed > BTM_BLE_CONN_INT_MAX ||
max_conn_interval_relaxed < min_conn_interval_relaxed) {
log::warn("Invalid relaxed connection intervals. Using default values.");
min_conn_interval_relaxed = kMinConnIntervalRelaxed;
max_conn_interval_relaxed = kMaxConnIntervalRelaxed;
}
if ((min_conn_interval_aggressive > min_conn_interval_relaxed) &&
(max_conn_interval_aggressive > max_conn_interval_relaxed)) {
log::warn(
"Relaxed connection intervals are more aggressive than aggressive ones."
" Setting all intervals to default values.");
min_conn_interval_aggressive = kMinConnIntervalAggressive;
max_conn_interval_aggressive = kMaxConnIntervalAggressive;
min_conn_interval_relaxed = kMinConnIntervalRelaxed;
max_conn_interval_relaxed = kMaxConnIntervalRelaxed;
}
log::debug("After checking validity: threshold={}, aggressive={}/{}, relaxed={}/{}",
aggressive_conn_threshold, min_conn_interval_aggressive, max_conn_interval_aggressive,
min_conn_interval_relaxed, max_conn_interval_relaxed);
initialized = true;
}
uint32_t LeConnectionParameters::GetAggressiveConnThreshold() {
if (!initialized) {
InitConnParamsWithSystemProperties();
}
return aggressive_conn_threshold;
}
uint32_t LeConnectionParameters::GetMinConnIntervalAggressive() {
if (!initialized) {
InitConnParamsWithSystemProperties();
}
return min_conn_interval_aggressive;
}
uint32_t LeConnectionParameters::GetMaxConnIntervalAggressive() {
if (!initialized) {
InitConnParamsWithSystemProperties();
}
return max_conn_interval_aggressive;
}
uint32_t LeConnectionParameters::GetMinConnIntervalRelaxed() {
if (!initialized) {
InitConnParamsWithSystemProperties();
}
return min_conn_interval_relaxed;
}
uint32_t LeConnectionParameters::GetMaxConnIntervalRelaxed() {
if (!initialized) {
InitConnParamsWithSystemProperties();
}
return max_conn_interval_relaxed;
}
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