AIDL CAN HAL

CAN HAL: now HIDL-free with 100% of your daily value of AIDL.

Bug: 170405615
Test: atest CanControllerAidlTest
Test: manually test slcan and socketcan hardware
Change-Id: I06bbb1379f4385e89757722c0276009b54cc7255
diff --git a/automotive/can/aidl/default/CanBusVirtual.h b/automotive/can/aidl/default/CanBusVirtual.h
new file mode 100644
index 0000000..9c5d35d
--- /dev/null
+++ b/automotive/can/aidl/default/CanBusVirtual.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright 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.
+ */
+#pragma once
+
+#include "CanBus.h"
+
+namespace aidl::android::hardware::automotive::can {
+
+class CanBusVirtual : public CanBus {
+  public:
+    CanBusVirtual(const std::string& ifname);
+
+  protected:
+    virtual Result preUp() override;
+    virtual bool postDown() override;
+
+  private:
+    bool mWasCreated = false;
+};
+
+}  // namespace aidl::android::hardware::automotive::can