diff --git a/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/ISupplicantStaIface.aidl b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/ISupplicantStaIface.aidl
index 917668e..2704e5c 100644
--- a/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/ISupplicantStaIface.aidl
+++ b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/ISupplicantStaIface.aidl
@@ -103,5 +103,12 @@
   android.hardware.wifi.supplicant.QosPolicyScsRequestStatus[] removeQosPolicyForScs(in byte[] scsPolicyIds);
   void configureMscs(in android.hardware.wifi.supplicant.MscsParams params);
   void disableMscs();
+  android.hardware.wifi.supplicant.UsdCapabilities getUsdCapabilities();
+  int startUsdPublish(in int cmdId, in android.hardware.wifi.supplicant.UsdPublishConfig usdPublishConfig);
+  int startUsdSubscribe(in int cmdId, in android.hardware.wifi.supplicant.UsdSubscribeConfig usdSubscribeConfig);
+  void updateUsdPublish(in int publishId, in byte[] serviceSpecificInfo);
+  void cancelUsdPublish(in int publishId);
+  void cancelUsdSubscribe(in int subscribeId);
+  void sendUsdMessage(in android.hardware.wifi.supplicant.UsdMessageInfo messageInfo);
   const int MAX_POLICIES_PER_QOS_SCS_REQUEST = 16;
 }
diff --git a/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/ISupplicantStaIfaceCallback.aidl b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/ISupplicantStaIfaceCallback.aidl
index e96b386..1eb07d5 100644
--- a/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/ISupplicantStaIfaceCallback.aidl
+++ b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/ISupplicantStaIfaceCallback.aidl
@@ -82,6 +82,15 @@
   oneway void onSupplicantStateChanged(in android.hardware.wifi.supplicant.SupplicantStateChangeData stateChangeData);
   oneway void onQosPolicyResponseForScs(in android.hardware.wifi.supplicant.QosPolicyScsResponseStatus[] qosPolicyScsResponseStatus);
   oneway void onPmkSaCacheAdded(in android.hardware.wifi.supplicant.PmkSaCacheData pmkSaData);
+  oneway void onUsdPublishStarted(in int cmdId, in int publishId);
+  oneway void onUsdSubscribeStarted(in int cmdId, in int subscribeId);
+  oneway void onUsdPublishConfigFailed(in int cmdId);
+  oneway void onUsdSubscribeConfigFailed(in int cmdId);
+  oneway void onUsdPublishTerminated(in int publishId, in android.hardware.wifi.supplicant.UsdReasonCode reasonCode);
+  oneway void onUsdSubscribeTerminated(in int subscribeId, in android.hardware.wifi.supplicant.UsdReasonCode reasonCode);
+  oneway void onUsdPublishReplied(in android.hardware.wifi.supplicant.UsdServiceDiscoveryInfo info);
+  oneway void onUsdServiceDiscovered(in android.hardware.wifi.supplicant.UsdServiceDiscoveryInfo info);
+  oneway void onUsdMessageReceived(in android.hardware.wifi.supplicant.UsdMessageInfo messageInfo);
   @Backing(type="int") @VintfStability
   enum MloLinkInfoChangeReason {
     TID_TO_LINK_MAP = 0,
diff --git a/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/UsdBaseConfig.aidl b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/UsdBaseConfig.aidl
new file mode 100644
index 0000000..8d23922
--- /dev/null
+++ b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/UsdBaseConfig.aidl
@@ -0,0 +1,45 @@
+/*
+ * 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// 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.wifi.supplicant;
+@VintfStability
+parcelable UsdBaseConfig {
+  @utf8InCpp String serviceName;
+  android.hardware.wifi.supplicant.UsdServiceProtoType serviceProtoType;
+  byte[] serviceSpecificInfo;
+  @nullable byte[] txMatchFilter;
+  @nullable byte[] rxMatchfilter;
+  int ttlSec;
+  int defaultFreqMhz;
+  int[] freqsMhz;
+}
diff --git a/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/UsdCapabilities.aidl b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/UsdCapabilities.aidl
new file mode 100644
index 0000000..1c5ad67
--- /dev/null
+++ b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/UsdCapabilities.aidl
@@ -0,0 +1,44 @@
+/*
+ * 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// 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.wifi.supplicant;
+@VintfStability
+parcelable UsdCapabilities {
+  boolean isUsdPublisherSupported;
+  boolean isUsdSubscriberSupported;
+  int maxLocalSsiLengthBytes;
+  int maxServiceNameLengthBytes;
+  int maxMatchFilterLengthBytes;
+  int maxNumPublishSessions;
+  int maxNumSubscribeSessions;
+}
diff --git a/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/UsdMessageInfo.aidl b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/UsdMessageInfo.aidl
new file mode 100644
index 0000000..40468bd
--- /dev/null
+++ b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/UsdMessageInfo.aidl
@@ -0,0 +1,41 @@
+/*
+ * 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// 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.wifi.supplicant;
+@VintfStability
+parcelable UsdMessageInfo {
+  int ownId;
+  int peerId;
+  byte[6] peerMacAddress;
+  byte[] message;
+}
diff --git a/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/UsdPublishConfig.aidl b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/UsdPublishConfig.aidl
new file mode 100644
index 0000000..791de52
--- /dev/null
+++ b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/UsdPublishConfig.aidl
@@ -0,0 +1,47 @@
+/*
+ * 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// 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.wifi.supplicant;
+@VintfStability
+parcelable UsdPublishConfig {
+  android.hardware.wifi.supplicant.UsdBaseConfig usdBaseConfig;
+  android.hardware.wifi.supplicant.UsdPublishConfig.PublishType publishType;
+  boolean isFsd;
+  int announcementPeriodMillis;
+  android.hardware.wifi.supplicant.UsdPublishTransmissionType transmissionType;
+  enum PublishType {
+    SOLICITED_ONLY = 0,
+    UNSOLICITED_ONLY = 1,
+    SOLICITED_AND_UNSOLICITED = 2,
+  }
+}
diff --git a/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/UsdPublishTransmissionType.aidl b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/UsdPublishTransmissionType.aidl
new file mode 100644
index 0000000..9486cd0
--- /dev/null
+++ b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/UsdPublishTransmissionType.aidl
@@ -0,0 +1,39 @@
+/*
+ * 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// 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.wifi.supplicant;
+@Backing(type="int") @VintfStability
+enum UsdPublishTransmissionType {
+  UNICAST = 0,
+  MULTICAST = 1,
+}
diff --git a/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/UsdReasonCode.aidl b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/UsdReasonCode.aidl
new file mode 100644
index 0000000..0600def
--- /dev/null
+++ b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/UsdReasonCode.aidl
@@ -0,0 +1,41 @@
+/*
+ * 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// 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.wifi.supplicant;
+@Backing(type="int") @VintfStability
+enum UsdReasonCode {
+  FAILURE_UNKNOWN = 0,
+  TIMEOUT = 1,
+  USER_REQUESTED = 2,
+  INVALID_ARGS = 3,
+}
diff --git a/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/UsdServiceDiscoveryInfo.aidl b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/UsdServiceDiscoveryInfo.aidl
new file mode 100644
index 0000000..3940ece
--- /dev/null
+++ b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/UsdServiceDiscoveryInfo.aidl
@@ -0,0 +1,44 @@
+/*
+ * 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// 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.wifi.supplicant;
+@VintfStability
+parcelable UsdServiceDiscoveryInfo {
+  int ownId;
+  int peerId;
+  byte[6] peerMacAddress;
+  byte[] matchFilter;
+  android.hardware.wifi.supplicant.UsdServiceProtoType protoType;
+  byte[] serviceSpecificInfo;
+  boolean isFsd;
+}
diff --git a/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/UsdServiceProtoType.aidl b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/UsdServiceProtoType.aidl
new file mode 100644
index 0000000..4d4a4f5
--- /dev/null
+++ b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/UsdServiceProtoType.aidl
@@ -0,0 +1,40 @@
+/*
+ * 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// 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.wifi.supplicant;
+@Backing(type="int") @VintfStability
+enum UsdServiceProtoType {
+  UNKNOWN = 0,
+  GENERIC = 1,
+  CSA_MATTER = 2,
+}
diff --git a/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/UsdSubscribeConfig.aidl b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/UsdSubscribeConfig.aidl
new file mode 100644
index 0000000..6aede8c
--- /dev/null
+++ b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/UsdSubscribeConfig.aidl
@@ -0,0 +1,44 @@
+/*
+ * 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// 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.wifi.supplicant;
+@VintfStability
+parcelable UsdSubscribeConfig {
+  android.hardware.wifi.supplicant.UsdBaseConfig usdBaseConfig;
+  android.hardware.wifi.supplicant.UsdSubscribeConfig.SubscribeType subscribeType;
+  int queryPeriodMillis;
+  enum SubscribeType {
+    PASSIVE_MODE = 0,
+    ACTIVE_MODE = 1,
+  }
+}
diff --git a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/ISupplicantStaIface.aidl b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/ISupplicantStaIface.aidl
index fb1673e..f3703e8 100644
--- a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/ISupplicantStaIface.aidl
+++ b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/ISupplicantStaIface.aidl
@@ -35,6 +35,10 @@
 import android.hardware.wifi.supplicant.QosPolicyStatus;
 import android.hardware.wifi.supplicant.RxFilterType;
 import android.hardware.wifi.supplicant.SignalPollResult;
+import android.hardware.wifi.supplicant.UsdCapabilities;
+import android.hardware.wifi.supplicant.UsdMessageInfo;
+import android.hardware.wifi.supplicant.UsdPublishConfig;
+import android.hardware.wifi.supplicant.UsdSubscribeConfig;
 import android.hardware.wifi.supplicant.WpaDriverCapabilitiesMask;
 import android.hardware.wifi.supplicant.WpsConfigMethods;
 
@@ -877,4 +881,87 @@
      *         |SupplicantStatusCode.FAILURE_UNKNOWN|
      */
     void disableMscs();
+
+    /**
+     * Retrieve capabilities related to Unsynchronized Service Discovery (USD).
+     *
+     * @return Instance of |UsdCapabilities| containing the capability info.
+     */
+    UsdCapabilities getUsdCapabilities();
+
+    /**
+     * Start a USD publish session. Triggers a response via
+     * |ISupplicantStaIfaceCallback.onUsdPublishStarted| if successful, or
+     * |ISupplicantStaIfaceCallback.onUsdPublishConfigFailed| if failed.
+     *
+     * @param cmdId Identifier for this request. Will be returned in the callback to identify
+     *              the request.
+     * @param usdPublishConfig Parameters for the requested publish session.
+     * @return Publish ID identifying the publish session. This ID will also be returned in the
+               onStarted callback when the session setup is completed successfully.
+     * @throws ServiceSpecificException with one of the following values:
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|
+     *         |SupplicantStatusCode.FAILURE_UNSUPPORTED|
+     */
+    int startUsdPublish(in int cmdId, in UsdPublishConfig usdPublishConfig);
+
+    /**
+     * Start a USD subscribe session. Triggers a response via
+     * |ISupplicantStaIfaceCallback.onUsdSubscribeStarted| if successful, or
+     * |ISupplicantStaIfaceCallback.onUsdSubscribeConfigFailed| if failed.
+     *
+     * @param cmdId Identifier for this request. Will be returned in the callback to identify
+     *              the request.
+     * @param usdSubscribeConfig Parameters for the requested subscribe session.
+     * @return Subscribe ID identifying the subscribe session. This ID will also be returned in the
+               onStarted callback when the session setup is completed successfully.
+     * @throws ServiceSpecificException with one of the following values:
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|
+     *         |SupplicantStatusCode.FAILURE_UNSUPPORTED|
+     */
+    int startUsdSubscribe(in int cmdId, in UsdSubscribeConfig usdSubscribeConfig);
+
+    /**
+     * Update the service-specific info for an active publish session.
+     *
+     * @param publishId Identifier for the active publish session.
+     * @param serviceSpecificInfo Byte array containing the service-specific info. Note that the
+     *                            maximum info length is |UsdCapabilities.maxLocalSsiLengthBytes|.
+     * @throws ServiceSpecificException with one of the following values:
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|
+     *         |SupplicantStatusCode.FAILURE_UNSUPPORTED|
+     */
+    void updateUsdPublish(in int publishId, in byte[] serviceSpecificInfo);
+
+    /**
+     * Cancel an existing USD publish session. |ISupplicantStaIfaceCallback.onUsdPublishTerminated|
+     * will be called upon completion.
+     *
+     * @param publishId Identifier for the publish session to cancel.
+     * @throws ServiceSpecificException with one of the following values:
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|
+     *         |SupplicantStatusCode.FAILURE_UNSUPPORTED|
+     */
+    void cancelUsdPublish(in int publishId);
+
+    /**
+     * Cancel an existing USD subscribe session.
+     * |ISupplicantStaIfaceCallback.onUsdSubscribeTerminated| will be called upon completion.
+     *
+     * @param subscribeId Identifier for the subscribe session to cancel.
+     * @throws ServiceSpecificException with one of the following values:
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|
+     *         |SupplicantStatusCode.FAILURE_UNSUPPORTED|
+     */
+    void cancelUsdSubscribe(in int subscribeId);
+
+    /**
+     * Send a message to a peer device across an active USD link.
+     *
+     * @param messageInfo Information for the message to be sent.
+     * @throws ServiceSpecificException with one of the following values:
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|
+     *         |SupplicantStatusCode.FAILURE_UNSUPPORTED|
+     */
+    void sendUsdMessage(in UsdMessageInfo messageInfo);
 }
diff --git a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/ISupplicantStaIfaceCallback.aidl b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/ISupplicantStaIfaceCallback.aidl
index e5e2e84..6a3f299 100644
--- a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/ISupplicantStaIfaceCallback.aidl
+++ b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/ISupplicantStaIfaceCallback.aidl
@@ -36,6 +36,9 @@
 import android.hardware.wifi.supplicant.StaIfaceCallbackState;
 import android.hardware.wifi.supplicant.StaIfaceReasonCode;
 import android.hardware.wifi.supplicant.SupplicantStateChangeData;
+import android.hardware.wifi.supplicant.UsdMessageInfo;
+import android.hardware.wifi.supplicant.UsdReasonCode;
+import android.hardware.wifi.supplicant.UsdServiceDiscoveryInfo;
 import android.hardware.wifi.supplicant.WpsConfigError;
 import android.hardware.wifi.supplicant.WpsErrorIndication;
 
@@ -416,4 +419,80 @@
      *
      */
     void onPmkSaCacheAdded(in PmkSaCacheData pmkSaData);
+
+    /**
+     * Called in response to |ISupplicantStaIface.startUsdPublish| to indicate that the
+     * publish session was started successfully.
+     *
+     * @param cmdId Identifier for the original request.
+     * @param publishId Identifier for the publish session.
+     */
+    void onUsdPublishStarted(in int cmdId, in int publishId);
+
+    /**
+     * Called in response to |ISupplicantStaIface.startUsdSubscribe| to indicate that the
+     * subscribe session was started successfully.
+     *
+     * @param cmdId Identifier for the original request.
+     * @param subscribeId Identifier for the subscribe session.
+     */
+    void onUsdSubscribeStarted(in int cmdId, in int subscribeId);
+
+    /**
+     * Called in response to |ISupplicantStaIface.startUsdPublish| to indicate that the
+     * publish session could not be configured.
+     *
+     * @param cmdId Identifier for the original request.
+     */
+    void onUsdPublishConfigFailed(in int cmdId);
+
+    /**
+     * Called in response to |ISupplicantStaIface.startUsdSubscribe| to indicate that the
+     * subscribe session could not be configured.
+     *
+     * @param cmdId Identifier for the original request.
+     */
+    void onUsdSubscribeConfigFailed(in int cmdId);
+
+    /**
+     * Called in response to |ISupplicantStaIface.cancelUsdPublish| to indicate that the session
+     * was cancelled successfully. May also be called unsolicited if the session terminated
+     * by supplicant.
+     *
+     * @param publishId Identifier for the publish session.
+     * @param reasonCode Code indicating the reason for the session cancellation.
+     */
+    void onUsdPublishTerminated(in int publishId, in UsdReasonCode reasonCode);
+
+    /**
+     * Called in response to |ISupplicantStaIface.cancelUsdSubscribe| to indicate that the session
+     * was cancelled successfully. May also be called unsolicited if the session terminated
+     * by supplicant.
+     *
+     * @param subscribeId Identifier for the subscribe session.
+     * @param reasonCode Code indicating the reason for the session cancellation.
+     */
+    void onUsdSubscribeTerminated(in int subscribeId, in UsdReasonCode reasonCode);
+
+    /**
+     * Indicates that the publisher sent solicited publish message to the subscriber.
+     *
+     * @param info Instance of |UsdServiceDiscoveryInfo| containing information about the reply.
+     */
+    void onUsdPublishReplied(in UsdServiceDiscoveryInfo info);
+
+    /**
+     * Indicates that a publisher was discovered. Only called if this device is acting as a
+     * subscriber.
+     *
+     * @param info Instance of |UsdServiceDiscoveryInfo| containing information about the service.
+     */
+    void onUsdServiceDiscovered(in UsdServiceDiscoveryInfo info);
+
+    /**
+     * Indicates that a message was received on an active USD link.
+     *
+     * @param messageInfo Information about the message that was received.
+     */
+    void onUsdMessageReceived(in UsdMessageInfo messageInfo);
 }
diff --git a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/UsdBaseConfig.aidl b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/UsdBaseConfig.aidl
new file mode 100644
index 0000000..f43f27b
--- /dev/null
+++ b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/UsdBaseConfig.aidl
@@ -0,0 +1,92 @@
+/*
+ * 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.
+ */
+
+package android.hardware.wifi.supplicant;
+
+import android.hardware.wifi.supplicant.UsdServiceProtoType;
+
+/**
+ * USD data used in both publish and subscribe configurations.
+ */
+@VintfStability
+parcelable UsdBaseConfig {
+    /**
+     * Service name of the USD session. A UTF-8 encoded string from 1 to 255 bytes in length.
+     * The only acceptable single-byte UTF-8 symbols for a Service Name are alphanumeric
+     * values (A-Z, a-z, 0-9), hyphen ('-'), period ('.'), and underscore ('_'). All
+     * valid multi-byte UTF-8 characters are acceptable in a Service Name.
+     */
+    @utf8InCpp String serviceName;
+
+    /**
+     * Service protocol type for the USD session (ex. Generic, CSA Matter).
+     */
+    UsdServiceProtoType serviceProtoType;
+
+    /**
+     * Details about the service being offered or being looked for. This information is transmitted
+     * within Service Discovery frames, and is used to help devices find each other and establish
+     * connections. The format and content of the service specific information are flexible and
+     * can be determined by the application.
+     */
+    byte[] serviceSpecificInfo;
+
+    /**
+     * Ordered sequence of <length, value> pairs (|length| uses 1 byte and contains the number of
+     * bytes in the |value| field) which specify further match criteria (beyond the service name).
+     *
+     * The match behavior is specified in details in the NAN spec.
+     * Publisher: used if provided.
+     * Subscriber: used (if provided) only in ACTIVE sessions.
+     *
+     * Max length: |UsdCapabilities.maxMatchFilterLength|.
+     * NAN Spec: matching_filter_tx and Service Descriptor Attribute (SDA) / Matching Filter
+     */
+    @nullable byte[] txMatchFilter;
+
+    /**
+     * Ordered sequence of <length, value> pairs (|length| uses 1 byte and contains the number of
+     * bytes in the |value| field) which specify further match criteria (beyond the service name).
+     *
+     * The match behavior is specified in details in the NAN spec.
+     * Publisher: used in SOLICITED or SOLICITED_UNSOLICITED sessions.
+     * Subscriber: used in ACTIVE or PASSIVE sessions.
+     *
+     * Max length: |UsdCapabilities.maxMatchFilterLength|.
+     * NAN Spec: matching_filter_rx
+     */
+    @nullable byte[] rxMatchfilter;
+
+    /**
+     * Time interval (in seconds) that a USD session will be alive.
+     * The session will be terminated when the time to live (TTL) is reached, triggering either
+     * |ISupplicantStaIfaceCallback.onUsdPublishTerminated| for Publish, or
+     * |ISupplicantStaIfaceCallback.onUsdSubscribeTerminated| for Subscribe.
+     */
+    int ttlSec;
+
+    /**
+     * Frequency where the device should begin to dwell. Default value is channel 6 (2.437 GHz),
+     * but other values may be selected per regulation in the geographical location.
+     */
+    int defaultFreqMhz;
+
+    /**
+     * Channels which can be switched to. May contain any of the 20 MHz channels in the
+     * 2.4 Ghz and/or 5 Ghz bands, per regulation in the geographical location.
+     */
+    int[] freqsMhz;
+}
diff --git a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/UsdCapabilities.aidl b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/UsdCapabilities.aidl
new file mode 100644
index 0000000..ffec893
--- /dev/null
+++ b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/UsdCapabilities.aidl
@@ -0,0 +1,59 @@
+/*
+ * 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.
+ */
+
+package android.hardware.wifi.supplicant;
+
+/**
+ * Capabilities supported by USD. Values are only valid if |isUsdPublisherSupported|
+ * and/or |isUsdSubscriberSupported| are true.
+ */
+@VintfStability
+parcelable UsdCapabilities {
+    /**
+     * Whether USD Publisher is supported on this device.
+     */
+    boolean isUsdPublisherSupported;
+
+    /**
+     * Whether USD Subscriber is supported on this device.
+     */
+    boolean isUsdSubscriberSupported;
+
+    /**
+     * Maximum allowed length (in bytes) for the Service Specific Info (SSI).
+     */
+    int maxLocalSsiLengthBytes;
+
+    /**
+     * Maximum allowed length (in bytes) for the service name.
+     */
+    int maxServiceNameLengthBytes;
+
+    /**
+     * Maximum allowed length (in bytes) for a match filter.
+     */
+    int maxMatchFilterLengthBytes;
+
+    /**
+     * Maximum number of allowed publish sessions.
+     */
+    int maxNumPublishSessions;
+
+    /**
+     * Maximum number of allowed subscribe sessions.
+     */
+    int maxNumSubscribeSessions;
+}
diff --git a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/UsdMessageInfo.aidl b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/UsdMessageInfo.aidl
new file mode 100644
index 0000000..fa7cc0e
--- /dev/null
+++ b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/UsdMessageInfo.aidl
@@ -0,0 +1,44 @@
+/*
+ * 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.
+ */
+
+package android.hardware.wifi.supplicant;
+
+/**
+ * Information for sending a USD message.
+ */
+@VintfStability
+parcelable UsdMessageInfo {
+    /**
+     * Identifier for this device, retrieved from |UsdServiceDiscoveryInfo|.
+     */
+    int ownId;
+
+    /**
+     * Identifier for the peer device, retrieved from |UsdServiceDiscoveryInfo|.
+     */
+    int peerId;
+
+    /**
+     * MAC address for the peer device.
+     */
+    byte[6] peerMacAddress;
+
+    /**
+     * Message contents. Note that the maximum message length is
+     * |UsdCapabilities.maxLocalSsiLengthBytes|.
+     */
+    byte[] message;
+}
diff --git a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/UsdPublishConfig.aidl b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/UsdPublishConfig.aidl
new file mode 100644
index 0000000..e04974b
--- /dev/null
+++ b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/UsdPublishConfig.aidl
@@ -0,0 +1,71 @@
+/*
+ * 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.
+ */
+
+package android.hardware.wifi.supplicant;
+
+import android.hardware.wifi.supplicant.UsdBaseConfig;
+import android.hardware.wifi.supplicant.UsdPublishTransmissionType;
+
+/**
+ * Parameters for configuring a USD publish session.
+ */
+@VintfStability
+parcelable UsdPublishConfig {
+    /**
+     * Type of USD publishing.
+     */
+    enum PublishType {
+        /**
+         * Only transmissions that are triggered by a specific event.
+         */
+        SOLICITED_ONLY = 0,
+
+        /**
+         * Only transmissions that are not requested.
+         */
+        UNSOLICITED_ONLY = 1,
+
+        /**
+         * Both solicited and unsolicited transmissions.
+         */
+        SOLICITED_AND_UNSOLICITED = 2,
+    }
+
+    /**
+     * Base USD session parameters.
+     */
+    UsdBaseConfig usdBaseConfig;
+
+    /**
+     * Types of transmissions (solicited vs. unsolicited) which should be generated.
+     */
+    PublishType publishType;
+
+    /**
+     * Whether Further Service Discovery (FSD) is enabled.
+     */
+    boolean isFsd;
+
+    /**
+     * Interval (in milliseconds) for sending unsolicited publish transmissions.
+     */
+    int announcementPeriodMillis;
+
+    /**
+     * Type of the publish transmission (ex. unicast, multicast).
+     */
+    UsdPublishTransmissionType transmissionType;
+}
diff --git a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/UsdPublishTransmissionType.aidl b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/UsdPublishTransmissionType.aidl
new file mode 100644
index 0000000..45a3cf4
--- /dev/null
+++ b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/UsdPublishTransmissionType.aidl
@@ -0,0 +1,34 @@
+/*
+ * 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.
+ */
+
+package android.hardware.wifi.supplicant;
+
+/**
+ * Types of USD publish transmissions.
+ */
+@VintfStability
+@Backing(type="int")
+enum UsdPublishTransmissionType {
+    /**
+     * Sends data from one device to a single, specific destination device.
+     */
+    UNICAST = 0,
+
+    /**
+     * Sends data from one device to a group of devices on the network simultaneously.
+     */
+    MULTICAST = 1,
+}
diff --git a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/UsdReasonCode.aidl b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/UsdReasonCode.aidl
new file mode 100644
index 0000000..4b1aab0
--- /dev/null
+++ b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/UsdReasonCode.aidl
@@ -0,0 +1,44 @@
+/*
+ * 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.
+ */
+
+package android.hardware.wifi.supplicant;
+
+/**
+ * Codes indicating the status of USD operations.
+ */
+@VintfStability
+@Backing(type="int")
+enum UsdReasonCode {
+    /**
+     * Unknown failure occurred.
+     */
+    FAILURE_UNKNOWN = 0,
+
+    /**
+     * The operation timed out.
+     */
+    TIMEOUT = 1,
+
+    /**
+     * The operation was requested by the user.
+     */
+    USER_REQUESTED = 2,
+
+    /**
+     * Invalid arguments were provided.
+     */
+    INVALID_ARGS = 3
+}
diff --git a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/UsdServiceDiscoveryInfo.aidl b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/UsdServiceDiscoveryInfo.aidl
new file mode 100644
index 0000000..4f6eaf1
--- /dev/null
+++ b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/UsdServiceDiscoveryInfo.aidl
@@ -0,0 +1,62 @@
+/*
+ * 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.
+ */
+
+package android.hardware.wifi.supplicant;
+
+import android.hardware.wifi.supplicant.UsdServiceProtoType;
+
+/**
+ * Information about a USD discovery session with a specific peer.
+ */
+@VintfStability
+parcelable UsdServiceDiscoveryInfo {
+    /**
+     * Identifier for this device.
+     */
+    int ownId;
+
+    /**
+     * Identifier for the discovered peer device.
+     */
+    int peerId;
+
+    /**
+     * MAC address of the discovered peer device.
+     */
+    byte[6] peerMacAddress;
+
+    /**
+     * Match filter from the discovery packet (publish or subscribe) which caused service discovery.
+     */
+    byte[] matchFilter;
+
+    /**
+     * Service protocol that is being used (ex. Generic, CSA Matter).
+     */
+    UsdServiceProtoType protoType;
+
+    /**
+     * Arbitrary service specific information communicated in discovery packets.
+     * There is no semantic meaning to these bytes. They are passed-through from publisher to
+     * subscriber as-is with no parsing.
+     */
+    byte[] serviceSpecificInfo;
+
+    /**
+     * Whether Further Service Discovery (FSD) is enabled.
+     */
+    boolean isFsd;
+}
diff --git a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/UsdServiceProtoType.aidl b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/UsdServiceProtoType.aidl
new file mode 100644
index 0000000..de9beb5
--- /dev/null
+++ b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/UsdServiceProtoType.aidl
@@ -0,0 +1,42 @@
+/*
+ * 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.
+ */
+
+package android.hardware.wifi.supplicant;
+
+/**
+ * Service protocols that use USD.
+ */
+@VintfStability
+@Backing(type="int")
+enum UsdServiceProtoType {
+    /**
+     * Unknown service type.
+     */
+    UNKNOWN = 0,
+
+    /**
+     * Generic service.
+     */
+    GENERIC = 1,
+
+    /**
+     * CSA (Connectivity Standards Alliance) Matter.
+     *
+     * Note: CSA Matter is an open-source, royalty-free standard for smart home technology that
+     * allows devices to work with any Matter-certified ecosystem.
+     */
+    CSA_MATTER = 2,
+}
diff --git a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/UsdSubscribeConfig.aidl b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/UsdSubscribeConfig.aidl
new file mode 100644
index 0000000..4e8893e
--- /dev/null
+++ b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/UsdSubscribeConfig.aidl
@@ -0,0 +1,56 @@
+/*
+ * 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.
+ */
+
+package android.hardware.wifi.supplicant;
+
+import android.hardware.wifi.supplicant.UsdBaseConfig;
+
+/**
+ * Parameters for configuring a USD subscribe session.
+ */
+@VintfStability
+parcelable UsdSubscribeConfig {
+    /**
+     * Subscribe modes that this session can be configured in.
+     */
+    enum SubscribeType {
+        /**
+         * Subscribe function does not request transmission of any Subscribe messages, but checks
+         * for matches in received Publish messages.
+         */
+        PASSIVE_MODE = 0,
+        /**
+         * Subscribe function additionally requests transmission of Subscribe messages and processes
+         * Publish messages.
+         */
+        ACTIVE_MODE = 1,
+    }
+
+    /**
+     * Base USD session parameters.
+     */
+    UsdBaseConfig usdBaseConfig;
+
+    /**
+     * Subscribe mode that this session should be configured in.
+     */
+    SubscribeType subscribeType;
+
+    /**
+     * Recommended periodicity (in milliseconds) of query transmissions for the session.
+     */
+    int queryPeriodMillis;
+}