[Thread] Initialize socket interface

Bug: 31342557
Test: build pass & manual test
Change-Id: I9d2ef2f6da8d9c856498f4d89423f76c369cbc62

threadnetwork/aidl/default/Android.bp

@@ -37,6 +37,7 @@ cc_binary {
     srcs: [
         "main.cpp",
         "service.cpp",
+        "socket_interface.cpp",
         "thread_chip.cpp",
         "utils.cpp",
     ],
@@ -63,6 +64,7 @@ cc_fuzz {
     ],
 
     srcs: [
+        "socket_interface.cpp",
         "thread_chip.cpp",
         "utils.cpp",
         "fuzzer.cpp",

threadnetwork/aidl/default/socket_interface.cpp

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2024 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.
+ */
+
+/**
+ * @file
+ *   This file includes the implementation for the Socket interface to radio
+ * (RCP).
+ */
+
+#include "socket_interface.hpp"
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace threadnetwork {
+
+SocketInterface::SocketInterface(const ot::Url::Url& aRadioUrl)
+    : mReceiveFrameCallback(nullptr),
+      mReceiveFrameContext(nullptr),
+      mReceiveFrameBuffer(nullptr),
+      mSockFd(-1),
+      mRadioUrl(aRadioUrl) {
+    memset(&mInterfaceMetrics, 0, sizeof(mInterfaceMetrics));
+    mInterfaceMetrics.mRcpInterfaceType = kSpinelInterfaceTypeVendor;
+}
+
+}  // namespace threadnetwork
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl

threadnetwork/aidl/default/socket_interface.hpp

@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2024 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.
+ */
+
+/**
+ * @file
+ *   This file includes definitions for the Socket interface interface to radio
+ * (RCP).
+ */
+
+#include "lib/spinel/spinel_interface.hpp"
+#include "lib/url/url.hpp"
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace threadnetwork {
+
+/**
+ * Defines a Socket interface to the Radio Co-processor (RCP)
+ *
+ */
+class SocketInterface : public ot::Spinel::SpinelInterface {
+  public:
+    /**
+     * Initializes the object.
+     *
+     * @param[in] aRadioUrl  RadioUrl parsed from radio url.
+     *
+     */
+    explicit SocketInterface(const ot::Url::Url& aRadioUrl);
+
+    /**
+     * This destructor deinitializes the object.
+     *
+     */
+    ~SocketInterface();
+
+    /**
+     * Returns the RCP interface metrics.
+     *
+     * @return The RCP interface metrics.
+     *
+     */
+    const otRcpInterfaceMetrics* GetRcpInterfaceMetrics(void) const { return &mInterfaceMetrics; }
+
+    /**
+     * Indicates whether or not the given interface matches this interface name.
+     *
+     * @param[in] aInterfaceName A pointer to the interface name.
+     *
+     * @retval TRUE   The given interface name matches this interface name.
+     * @retval FALSE  The given interface name doesn't match this interface
+     * name.
+     */
+    static bool IsInterfaceNameMatch(const char* aInterfaceName) {
+        static const char kInterfaceName[] = "spinel+socket";
+        return (strncmp(aInterfaceName, kInterfaceName, strlen(kInterfaceName)) == 0);
+    }
+
+  private:
+    ReceiveFrameCallback mReceiveFrameCallback;
+    void* mReceiveFrameContext;
+    RxFrameBuffer* mReceiveFrameBuffer;
+
+    int mSockFd;
+    const ot::Url::Url& mRadioUrl;
+
+    otRcpInterfaceMetrics mInterfaceMetrics;
+
+    // Non-copyable, intentionally not implemented.
+    SocketInterface(const SocketInterface&);
+    SocketInterface& operator=(const SocketInterface&);
+};
+
+}  // namespace threadnetwork
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl