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_p2p_iface.h b/wifi/aidl/default/wifi_p2p_iface.h
new file mode 100644
index 0000000..d17470e
--- /dev/null
+++ b/wifi/aidl/default/wifi_p2p_iface.h
@@ -0,0 +1,61 @@
+/*
+ * 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.
+ */
+
+#ifndef WIFI_P2P_IFACE_H_
+#define WIFI_P2P_IFACE_H_
+
+#include <aidl/android/hardware/wifi/BnWifiP2pIface.h>
+#include <android-base/macros.h>
+
+#include "wifi_legacy_hal.h"
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace wifi {
+
+/**
+ * AIDL interface object used to control a P2P Iface instance.
+ */
+class WifiP2pIface : public BnWifiP2pIface {
+  public:
+    WifiP2pIface(const std::string& ifname,
+                 const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal);
+    // Refer to |WifiChip::invalidate()|.
+    void invalidate();
+    bool isValid();
+    std::string getName();
+
+    // AIDL methods exposed.
+    ndk::ScopedAStatus getName(std::string* _aidl_return) override;
+
+  private:
+    // Corresponding worker functions for the AIDL methods.
+    std::pair<std::string, ndk::ScopedAStatus> getNameInternal();
+
+    std::string ifname_;
+    std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
+    bool is_valid_;
+
+    DISALLOW_COPY_AND_ASSIGN(WifiP2pIface);
+};
+
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
+
+#endif  // WIFI_P2P_IFACE_H_