diff --git a/tetheroffload/aidl/Android.bp b/tetheroffload/aidl/Android.bp
index b3b6ebf..6de27c3 100644
--- a/tetheroffload/aidl/Android.bp
+++ b/tetheroffload/aidl/Android.bp
@@ -4,7 +4,6 @@
 
 aidl_interface {
     name: "android.hardware.tetheroffload",
-    owner: "google",
     vendor_available: true,
     srcs: ["android/hardware/tetheroffload/*.aidl"],
     stability: "vintf",
@@ -24,4 +23,12 @@
             apps_enabled: false,
         },
     },
+    versions_with_info: [
+        {
+            version: "1",
+            imports: [],
+        },
+    ],
+    frozen: true,
+
 }
diff --git a/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/.hash b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/.hash
new file mode 100644
index 0000000..e7b452e
--- /dev/null
+++ b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/.hash
@@ -0,0 +1 @@
+ba3f0342e13af942628a6c00e920d55ce8ad1ea3
diff --git a/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/ForwardedStats.aidl b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/ForwardedStats.aidl
new file mode 100644
index 0000000..493a698
--- /dev/null
+++ b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/ForwardedStats.aidl
@@ -0,0 +1,39 @@
+/*
+ * 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.tetheroffload;
+@VintfStability
+parcelable ForwardedStats {
+  long rxBytes;
+  long txBytes;
+}
diff --git a/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/IOffload.aidl b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/IOffload.aidl
new file mode 100644
index 0000000..9a58b1f
--- /dev/null
+++ b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/IOffload.aidl
@@ -0,0 +1,46 @@
+/*
+ * 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.tetheroffload;
+@VintfStability
+interface IOffload {
+  void initOffload(in ParcelFileDescriptor fd1, in ParcelFileDescriptor fd2, in android.hardware.tetheroffload.ITetheringOffloadCallback cb);
+  void stopOffload();
+  void setLocalPrefixes(in String[] prefixes);
+  android.hardware.tetheroffload.ForwardedStats getForwardedStats(in String upstream);
+  void setDataWarningAndLimit(in String upstream, in long warningBytes, in long limitBytes);
+  void setUpstreamParameters(in String iface, in String v4Addr, in String v4Gw, in String[] v6Gws);
+  void addDownstream(in String iface, in String prefix);
+  void removeDownstream(in String iface, in String prefix);
+  const int ERROR_CODE_UNUSED = 0;
+}
diff --git a/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/IPv4AddrPortPair.aidl b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/IPv4AddrPortPair.aidl
new file mode 100644
index 0000000..2b42f0c
--- /dev/null
+++ b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/IPv4AddrPortPair.aidl
@@ -0,0 +1,39 @@
+/*
+ * 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.tetheroffload;
+@VintfStability
+parcelable IPv4AddrPortPair {
+  String addr;
+  int port;
+}
diff --git a/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/ITetheringOffloadCallback.aidl b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/ITetheringOffloadCallback.aidl
new file mode 100644
index 0000000..4eb7d04
--- /dev/null
+++ b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/ITetheringOffloadCallback.aidl
@@ -0,0 +1,39 @@
+/*
+ * 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.tetheroffload;
+@VintfStability
+interface ITetheringOffloadCallback {
+  oneway void onEvent(in android.hardware.tetheroffload.OffloadCallbackEvent event);
+  oneway void updateTimeout(in android.hardware.tetheroffload.NatTimeoutUpdate params);
+}
diff --git a/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/NatTimeoutUpdate.aidl b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/NatTimeoutUpdate.aidl
new file mode 100644
index 0000000..9eddaa2
--- /dev/null
+++ b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/NatTimeoutUpdate.aidl
@@ -0,0 +1,40 @@
+/*
+ * 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.tetheroffload;
+@VintfStability
+parcelable NatTimeoutUpdate {
+  android.hardware.tetheroffload.IPv4AddrPortPair src;
+  android.hardware.tetheroffload.IPv4AddrPortPair dst;
+  android.hardware.tetheroffload.NetworkProtocol proto;
+}
diff --git a/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/NetworkProtocol.aidl b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/NetworkProtocol.aidl
new file mode 100644
index 0000000..52bd2a6
--- /dev/null
+++ b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/NetworkProtocol.aidl
@@ -0,0 +1,39 @@
+/*
+ * 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.tetheroffload;
+@Backing(type="int") @VintfStability
+enum NetworkProtocol {
+  TCP = 6,
+  UDP = 17,
+}
diff --git a/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/OffloadCallbackEvent.aidl b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/OffloadCallbackEvent.aidl
new file mode 100644
index 0000000..026e18e
--- /dev/null
+++ b/tetheroffload/aidl/aidl_api/android.hardware.tetheroffload/1/android/hardware/tetheroffload/OffloadCallbackEvent.aidl
@@ -0,0 +1,43 @@
+/*
+ * 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.tetheroffload;
+@Backing(type="int") @VintfStability
+enum OffloadCallbackEvent {
+  OFFLOAD_STARTED = 1,
+  OFFLOAD_STOPPED_ERROR = 2,
+  OFFLOAD_STOPPED_UNSUPPORTED = 3,
+  OFFLOAD_SUPPORT_AVAILABLE = 4,
+  OFFLOAD_STOPPED_LIMIT_REACHED = 5,
+  OFFLOAD_WARNING_REACHED = 6,
+}