Add AIDL implementation for the vendor HAL service.
Bug: 205044134
Test: Pass AIDL VTS tests and regression tests.
Change-Id: Iad04ce01f71fc220443e05a4be05d7d5545227e8
diff --git a/wifi/aidl/default/wifi.cpp b/wifi/aidl/default/wifi.cpp
new file mode 100644
index 0000000..e30c38a
--- /dev/null
+++ b/wifi/aidl/default/wifi.cpp
@@ -0,0 +1,284 @@
+/*
+ * 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 "wifi.h"
+
+#include <android-base/logging.h>
+
+#include "aidl_return_util.h"
+#include "wifi_status_util.h"
+
+namespace {
+// Starting Chip ID, will be assigned to primary chip
+static constexpr int32_t kPrimaryChipId = 0;
+} // namespace
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace wifi {
+using aidl_return_util::validateAndCall;
+using aidl_return_util::validateAndCallWithLock;
+
+Wifi::Wifi(const std::shared_ptr<::android::wifi_system::InterfaceTool> iface_tool,
+ const std::shared_ptr<legacy_hal::WifiLegacyHalFactory> legacy_hal_factory,
+ const std::shared_ptr<mode_controller::WifiModeController> mode_controller,
+ const std::shared_ptr<feature_flags::WifiFeatureFlags> feature_flags)
+ : iface_tool_(iface_tool),
+ legacy_hal_factory_(legacy_hal_factory),
+ mode_controller_(mode_controller),
+ feature_flags_(feature_flags),
+ run_state_(RunState::STOPPED) {}
+
+bool Wifi::isValid() {
+ // This object is always valid.
+ return true;
+}
+
+ndk::ScopedAStatus Wifi::registerEventCallback(
+ const std::shared_ptr<IWifiEventCallback>& in_callback) {
+ return validateAndCall(this, WifiStatusCode::ERROR_UNKNOWN,
+ &Wifi::registerEventCallbackInternal, in_callback);
+}
+
+ndk::ScopedAStatus Wifi::isStarted(bool* _aidl_return) {
+ *_aidl_return = (run_state_ != RunState::STOPPED);
+ return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus Wifi::start() {
+ return validateAndCall(this, WifiStatusCode::ERROR_UNKNOWN, &Wifi::startInternal);
+}
+
+ndk::ScopedAStatus Wifi::stop() {
+ return validateAndCallWithLock(this, WifiStatusCode::ERROR_UNKNOWN, &Wifi::stopInternal);
+}
+
+ndk::ScopedAStatus Wifi::getChipIds(std::vector<int32_t>* _aidl_return) {
+ return validateAndCall(this, WifiStatusCode::ERROR_UNKNOWN, &Wifi::getChipIdsInternal,
+ _aidl_return);
+}
+
+ndk::ScopedAStatus Wifi::getChip(int32_t in_chipId, std::shared_ptr<IWifiChip>* _aidl_return) {
+ return validateAndCall(this, WifiStatusCode::ERROR_UNKNOWN, &Wifi::getChipInternal,
+ _aidl_return, in_chipId);
+}
+
+binder_status_t Wifi::dump(int fd, const char** args, uint32_t numArgs) {
+ LOG(INFO) << "-----------Debug was called----------------";
+ if (chips_.size() == 0) {
+ LOG(INFO) << "No chips to display.";
+ return STATUS_OK;
+ }
+
+ for (std::shared_ptr<WifiChip> chip : chips_) {
+ if (!chip.get()) continue;
+ chip->dump(fd, args, numArgs);
+ }
+ return STATUS_OK;
+}
+
+ndk::ScopedAStatus Wifi::registerEventCallbackInternal(
+ const std::shared_ptr<IWifiEventCallback>& event_callback) {
+ if (!event_cb_handler_.addCallback(event_callback)) {
+ return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+ }
+ return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus Wifi::startInternal() {
+ if (run_state_ == RunState::STARTED) {
+ return ndk::ScopedAStatus::ok();
+ } else if (run_state_ == RunState::STOPPING) {
+ return createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE, "HAL is stopping");
+ }
+ ndk::ScopedAStatus wifi_status = initializeModeControllerAndLegacyHal();
+ if (wifi_status.isOk()) {
+ // Register the callback for subsystem restart
+ const auto& on_subsystem_restart_callback = [this](const std::string& error) {
+ ndk::ScopedAStatus wifi_status = createWifiStatus(WifiStatusCode::ERROR_UNKNOWN, error);
+ for (const auto& callback : event_cb_handler_.getCallbacks()) {
+ LOG(INFO) << "Attempting to invoke onSubsystemRestart "
+ "callback";
+ WifiStatusCode errorCode =
+ static_cast<WifiStatusCode>(wifi_status.getServiceSpecificError());
+ if (!callback->onSubsystemRestart(errorCode).isOk()) {
+ LOG(ERROR) << "Failed to invoke onSubsystemRestart callback";
+ } else {
+ LOG(INFO) << "Succeeded to invoke onSubsystemRestart "
+ "callback";
+ }
+ }
+ };
+
+ // Create the chip instance once the HAL is started.
+ int32_t chipId = kPrimaryChipId;
+ for (auto& hal : legacy_hals_) {
+ chips_.push_back(
+ WifiChip::create(chipId, chipId == kPrimaryChipId, hal, mode_controller_,
+ std::make_shared<iface_util::WifiIfaceUtil>(iface_tool_, hal),
+ feature_flags_, on_subsystem_restart_callback));
+ chipId++;
+ }
+ run_state_ = RunState::STARTED;
+ for (const auto& callback : event_cb_handler_.getCallbacks()) {
+ if (!callback->onStart().isOk()) {
+ LOG(ERROR) << "Failed to invoke onStart callback";
+ };
+ }
+ LOG(INFO) << "Wifi HAL started";
+ } else {
+ for (const auto& callback : event_cb_handler_.getCallbacks()) {
+ WifiStatusCode errorCode =
+ static_cast<WifiStatusCode>(wifi_status.getServiceSpecificError());
+ if (!callback->onFailure(errorCode).isOk()) {
+ LOG(ERROR) << "Failed to invoke onFailure callback";
+ }
+ }
+ LOG(ERROR) << "Wifi HAL start failed";
+ // Clear the event callback objects since the HAL start failed.
+ event_cb_handler_.invalidate();
+ }
+ return wifi_status;
+}
+
+ndk::ScopedAStatus Wifi::stopInternal(
+ /* NONNULL */ std::unique_lock<std::recursive_mutex>* lock) {
+ if (run_state_ == RunState::STOPPED) {
+ return ndk::ScopedAStatus::ok();
+ } else if (run_state_ == RunState::STOPPING) {
+ return createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE, "HAL is stopping");
+ }
+ // Clear the chip object and its child objects since the HAL is now
+ // stopped.
+ for (auto& chip : chips_) {
+ if (chip.get()) {
+ chip->invalidate();
+ chip.reset();
+ }
+ }
+ chips_.clear();
+ ndk::ScopedAStatus wifi_status = stopLegacyHalAndDeinitializeModeController(lock);
+ if (wifi_status.isOk()) {
+ for (const auto& callback : event_cb_handler_.getCallbacks()) {
+ if (!callback->onStop().isOk()) {
+ LOG(ERROR) << "Failed to invoke onStop callback";
+ };
+ }
+ LOG(INFO) << "Wifi HAL stopped";
+ } else {
+ for (const auto& callback : event_cb_handler_.getCallbacks()) {
+ WifiStatusCode errorCode =
+ static_cast<WifiStatusCode>(wifi_status.getServiceSpecificError());
+ if (!callback->onFailure(errorCode).isOk()) {
+ LOG(ERROR) << "Failed to invoke onFailure callback";
+ }
+ }
+ LOG(ERROR) << "Wifi HAL stop failed";
+ }
+ // Clear the event callback objects since the HAL is now stopped.
+ event_cb_handler_.invalidate();
+ return wifi_status;
+}
+
+std::pair<std::vector<int32_t>, ndk::ScopedAStatus> Wifi::getChipIdsInternal() {
+ std::vector<int32_t> chip_ids;
+
+ for (auto& chip : chips_) {
+ int32_t chip_id = getChipIdFromWifiChip(chip);
+ if (chip_id != INT32_MAX) chip_ids.emplace_back(chip_id);
+ }
+ return {std::move(chip_ids), ndk::ScopedAStatus::ok()};
+}
+
+std::pair<std::shared_ptr<IWifiChip>, ndk::ScopedAStatus> Wifi::getChipInternal(int32_t chip_id) {
+ for (auto& chip : chips_) {
+ int32_t cand_id = getChipIdFromWifiChip(chip);
+ if ((cand_id != INT32_MAX) && (cand_id == chip_id)) return {chip, ndk::ScopedAStatus::ok()};
+ }
+
+ return {nullptr, createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS)};
+}
+
+ndk::ScopedAStatus Wifi::initializeModeControllerAndLegacyHal() {
+ if (!mode_controller_->initialize()) {
+ LOG(ERROR) << "Failed to initialize firmware mode controller";
+ return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+ }
+
+ legacy_hals_ = legacy_hal_factory_->getHals();
+ if (legacy_hals_.empty()) return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+ int index = 0; // for failure log
+ for (auto& hal : legacy_hals_) {
+ legacy_hal::wifi_error legacy_status = hal->initialize();
+ if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+ // Currently WifiLegacyHal::initialize does not allocate extra mem,
+ // only initializes the function table. If this changes, need to
+ // implement WifiLegacyHal::deinitialize and deinitalize the
+ // HALs already initialized
+ LOG(ERROR) << "Failed to initialize legacy HAL index: " << index
+ << " error: " << legacyErrorToString(legacy_status);
+ return createWifiStatusFromLegacyError(legacy_status);
+ }
+ index++;
+ }
+ return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus Wifi::stopLegacyHalAndDeinitializeModeController(
+ /* NONNULL */ std::unique_lock<std::recursive_mutex>* lock) {
+ legacy_hal::wifi_error legacy_status = legacy_hal::WIFI_SUCCESS;
+ int index = 0;
+
+ run_state_ = RunState::STOPPING;
+ for (auto& hal : legacy_hals_) {
+ legacy_hal::wifi_error tmp = hal->stop(lock, [&]() {});
+ if (tmp != legacy_hal::WIFI_SUCCESS) {
+ LOG(ERROR) << "Failed to stop legacy HAL index: " << index
+ << " error: " << legacyErrorToString(legacy_status);
+ legacy_status = tmp;
+ }
+ index++;
+ }
+ run_state_ = RunState::STOPPED;
+
+ if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+ LOG(ERROR) << "One or more legacy HALs failed to stop";
+ return createWifiStatusFromLegacyError(legacy_status);
+ }
+ if (!mode_controller_->deinitialize()) {
+ LOG(ERROR) << "Failed to deinitialize firmware mode controller";
+ return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+ }
+ return ndk::ScopedAStatus::ok();
+}
+
+int32_t Wifi::getChipIdFromWifiChip(std::shared_ptr<WifiChip>& chip) {
+ int32_t chip_id = INT32_MAX;
+ if (chip.get()) {
+ ndk::ScopedAStatus status = chip->getId(&chip_id);
+ if (!status.isOk()) {
+ // Reset value if operation failed.
+ chip_id = INT32_MAX;
+ }
+ }
+ return chip_id;
+}
+
+} // namespace wifi
+} // namespace hardware
+} // namespace android
+} // namespace aidl