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/*
* Copyright (C) 2016 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.
*/
#include <android-base/logging.h>
#include "hidl_return_util.h"
#include "wifi.h"
#include "wifi_status_util.h"
namespace {
// Chip ID to use for the only supported chip.
static constexpr android::hardware::wifi::V1_0::ChipId kChipId = 0;
} // namespace
namespace android {
namespace hardware {
namespace wifi {
namespace V1_0 {
namespace implementation {
using hidl_return_util::validateAndCall;
Wifi::Wifi()
: legacy_hal_(new legacy_hal::WifiLegacyHal()),
run_state_(RunState::STOPPED) {}
bool Wifi::isValid() {
// This object is always valid.
return true;
}
Return<void> Wifi::registerEventCallback(
const sp<IWifiEventCallback>& event_callback,
registerEventCallback_cb hidl_status_cb) {
return validateAndCall(this,
WifiStatusCode::ERROR_UNKNOWN,
&Wifi::registerEventCallbackInternal,
hidl_status_cb,
event_callback);
}
Return<bool> Wifi::isStarted() {
return run_state_ != RunState::STOPPED;
}
Return<void> Wifi::start(start_cb hidl_status_cb) {
return validateAndCall(this,
WifiStatusCode::ERROR_UNKNOWN,
&Wifi::startInternal,
hidl_status_cb);
}
Return<void> Wifi::stop(stop_cb hidl_status_cb) {
return validateAndCall(
this, WifiStatusCode::ERROR_UNKNOWN, &Wifi::stopInternal, hidl_status_cb);
}
Return<void> Wifi::getChipIds(getChipIds_cb hidl_status_cb) {
return validateAndCall(this,
WifiStatusCode::ERROR_UNKNOWN,
&Wifi::getChipIdsInternal,
hidl_status_cb);
}
Return<void> Wifi::getChip(ChipId chip_id, getChip_cb hidl_status_cb) {
return validateAndCall(this,
WifiStatusCode::ERROR_UNKNOWN,
&Wifi::getChipInternal,
hidl_status_cb,
chip_id);
}
WifiStatus Wifi::registerEventCallbackInternal(
const sp<IWifiEventCallback>& event_callback) {
// TODO(b/31632518): remove the callback when the client is destroyed
event_callbacks_.emplace_back(event_callback);
return createWifiStatus(WifiStatusCode::SUCCESS);
}
WifiStatus Wifi::startInternal() {
if (run_state_ == RunState::STARTED) {
return createWifiStatus(WifiStatusCode::SUCCESS);
} else if (run_state_ == RunState::STOPPING) {
return createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE,
"HAL is stopping");
}
LOG(INFO) << "Starting HAL";
legacy_hal::wifi_error legacy_status = legacy_hal_->start();
if (legacy_status != legacy_hal::WIFI_SUCCESS) {
LOG(ERROR) << "Failed to start Wifi HAL: "
<< legacyErrorToString(legacy_status);
return createWifiStatusFromLegacyError(legacy_status,
"Failed to start HAL");
}
// Create the chip instance once the HAL is started.
chip_ = new WifiChip(kChipId, legacy_hal_);
run_state_ = RunState::STARTED;
for (const auto& callback : event_callbacks_) {
if (!callback->onStart().getStatus().isOk()) {
LOG(ERROR) << "Failed to invoke onStart callback";
};
}
return createWifiStatus(WifiStatusCode::SUCCESS);
}
WifiStatus Wifi::stopInternal() {
if (run_state_ == RunState::STOPPED) {
return createWifiStatus(WifiStatusCode::SUCCESS);
} else if (run_state_ == RunState::STOPPING) {
return createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE,
"HAL is stopping");
}
LOG(INFO) << "Stopping HAL";
run_state_ = RunState::STOPPING;
const auto on_complete_callback_ = [&]() {
if (chip_.get()) {
chip_->invalidate();
}
chip_.clear();
run_state_ = RunState::STOPPED;
for (const auto& callback : event_callbacks_) {
if (!callback->onStop().getStatus().isOk()) {
LOG(ERROR) << "Failed to invoke onStop callback";
};
}
};
legacy_hal::wifi_error legacy_status =
legacy_hal_->stop(on_complete_callback_);
if (legacy_status != legacy_hal::WIFI_SUCCESS) {
LOG(ERROR) << "Failed to stop Wifi HAL: "
<< legacyErrorToString(legacy_status);
WifiStatus wifi_status =
createWifiStatusFromLegacyError(legacy_status, "Failed to stop HAL");
for (const auto& callback : event_callbacks_) {
callback->onFailure(wifi_status);
}
return wifi_status;
}
return createWifiStatus(WifiStatusCode::SUCCESS);
}
std::pair<WifiStatus, std::vector<ChipId>> Wifi::getChipIdsInternal() {
std::vector<ChipId> chip_ids;
if (chip_.get()) {
chip_ids.emplace_back(kChipId);
}
return {createWifiStatus(WifiStatusCode::SUCCESS), std::move(chip_ids)};
}
std::pair<WifiStatus, sp<IWifiChip>> Wifi::getChipInternal(ChipId chip_id) {
if (!chip_.get()) {
return {createWifiStatus(WifiStatusCode::ERROR_NOT_STARTED), nullptr};
}
if (chip_id != kChipId) {
return {createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS), nullptr};
}
return {createWifiStatus(WifiStatusCode::SUCCESS), chip_};
}
} // namespace implementation
} // namespace V1_0
} // namespace wifi
} // namespace hardware
} // namespace android
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