| /* |
| * Copyright (C) 2022 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 "chre_host/wifi_ext_hal_handler.h" |
| |
| namespace android { |
| namespace chre { |
| |
| WifiExtHalHandler::~WifiExtHalHandler() { |
| notifyThreadToExit(); |
| mThread.join(); |
| } |
| |
| WifiExtHalHandler::WifiExtHalHandler( |
| const std::function<void(bool)> &statusChangeCallback) { |
| mEnableConfig.reset(); |
| mThread = std::thread(&WifiExtHalHandler::wifiExtHandlerThreadEntry, this); |
| mDeathRecipient = |
| AIBinder_DeathRecipient_new(WifiExtHalHandler::onWifiExtHalServiceDeath); |
| mCallback = ndk::SharedRefBase::make<WifiExtCallback>(statusChangeCallback); |
| } |
| |
| void WifiExtHalHandler::handleConfigurationRequest(bool enable) { |
| std::lock_guard<std::mutex> lock(mMutex); |
| mEnableConfig = enable; |
| mCondVar.notify_one(); |
| } |
| |
| void WifiExtHalHandler::dispatchConfigurationRequest(bool enable) { |
| if (checkWifiExtHalConnected()) { |
| auto result = mService->requestWifiChreNanRtt(enable); |
| if (!result.isOk()) { |
| LOGE("wifi ext hal config request for %s failed with code: %d", |
| (enable == true) ? "Enable" : "Disable", |
| result.getServiceSpecificError()); |
| } |
| mCallback->onStatusChanged(result.isOk()); |
| } |
| } |
| |
| bool WifiExtHalHandler::checkWifiExtHalConnected() { |
| bool success = false; |
| if (mService == nullptr) { |
| auto serviceName = std::string() + IWifiExt::descriptor + "/default"; |
| mService = IWifiExt::fromBinder( |
| ndk::SpAIBinder(AServiceManager_waitForService(serviceName.c_str()))); |
| if (mService != nullptr) { |
| LOGD("Connected to Wifi Ext HAL service"); |
| AIBinder_linkToDeath(mService->asBinder().get(), mDeathRecipient, |
| reinterpret_cast<void *>(&mService) /* cookie */); |
| auto result = mService->registerChreCallback(mCallback); |
| if (!result.isOk()) { |
| LOGE("Failed to register CHRE callback with WifiExt, code: %d", |
| result.getServiceSpecificError()); |
| } else { |
| success = true; |
| } |
| } else { |
| LOGE("Failed to connect to Wifi Ext HAL service"); |
| } |
| } |
| return success; |
| } |
| |
| void WifiExtHalHandler::onWifiExtHalServiceDeath(void *cookie) { |
| LOGI("WiFi Ext HAL service died"); |
| // Cookie is expected to be a pointer to mService. |
| *((std::shared_ptr<IWifiExt> *)cookie) = nullptr; |
| // TODO(b/204226580): Figure out if wifi ext HAL is stateful and if it |
| // isn't, notify CHRE of a NAN disabled status change to enable nanoapps |
| // to not expect NAN data until the service is back up, and expect it to |
| // do a re-enable when needed. Or we could store the current status of |
| // enablement, and do a re-enable/disable when the service is back up. |
| } |
| |
| void WifiExtHalHandler::wifiExtHandlerThreadEntry() { |
| while (mThreadRunning) { |
| std::unique_lock<std::mutex> lock(mMutex); |
| mCondVar.wait( |
| lock, [this] { return mEnableConfig.has_value() || !mThreadRunning; }); |
| |
| if (mThreadRunning) { |
| dispatchConfigurationRequest(mEnableConfig.value()); |
| mEnableConfig.reset(); |
| } |
| } |
| } |
| |
| void WifiExtHalHandler::notifyThreadToExit() { |
| std::lock_guard<std::mutex> lock(mMutex); |
| mThreadRunning = false; |
| mCondVar.notify_one(); |
| } |
| |
| } // namespace chre |
| } // namespace android |