diff --git a/wireless/CMakeLists.txt b/wireless/CMakeLists.txt
index 9fc2919e61..72458cf1ae 100644
--- a/wireless/CMakeLists.txt
+++ b/wireless/CMakeLists.txt
@@ -1,6 +1,8 @@
 # ##############################################################################
 # wireless/CMakeLists.txt
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more contributor
 # license agreements.  See the NOTICE file distributed with this work for
 # additional information regarding copyright ownership.  The ASF licenses this
diff --git a/wireless/Makefile b/wireless/Makefile
index 24ad67151c..f5dcd04793 100644
--- a/wireless/Makefile
+++ b/wireless/Makefile
@@ -1,6 +1,8 @@
 ############################################################################
 # wireless/Makefile
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.  The
diff --git a/wireless/bluetooth/CMakeLists.txt b/wireless/bluetooth/CMakeLists.txt
index 58e90f5d8c..141dd73d1f 100644
--- a/wireless/bluetooth/CMakeLists.txt
+++ b/wireless/bluetooth/CMakeLists.txt
@@ -1,6 +1,8 @@
 # ##############################################################################
 # wireless/bluetooth/CMakeLists.txt
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more contributor
 # license agreements.  See the NOTICE file distributed with this work for
 # additional information regarding copyright ownership.  The ASF licenses this
diff --git a/wireless/bluetooth/Make.defs b/wireless/bluetooth/Make.defs
index 9df9daf468..b3511bc341 100644
--- a/wireless/bluetooth/Make.defs
+++ b/wireless/bluetooth/Make.defs
@@ -1,6 +1,8 @@
 ############################################################################
 # wireless/bluetooth/Make.defs
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.  The
diff --git a/wireless/bluetooth/bt_atomic.c b/wireless/bluetooth/bt_atomic.c
index 184d81431b..1a3f088fe9 100644
--- a/wireless/bluetooth/bt_atomic.c
+++ b/wireless/bluetooth/bt_atomic.c
@@ -1,6 +1,7 @@
 /****************************************************************************
  * wireless/bluetooth/bt_atomic.c
- * Linux like atomic operations
+ *
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
diff --git a/wireless/bluetooth/bt_atomic.h b/wireless/bluetooth/bt_atomic.h
index 8eee4f33dc..56af173350 100644
--- a/wireless/bluetooth/bt_atomic.h
+++ b/wireless/bluetooth/bt_atomic.h
@@ -1,6 +1,7 @@
 /****************************************************************************
  * wireless/bluetooth/bt_atomic.h
- * Linux like atomic operations
+ *
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
diff --git a/wireless/bluetooth/bt_att.c b/wireless/bluetooth/bt_att.c
index be5c87f8fa..11ffa3a8b7 100644
--- a/wireless/bluetooth/bt_att.c
+++ b/wireless/bluetooth/bt_att.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/bluetooth/bt_att.c
  *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  *   Copyright (c) 2016, Intel Corporation
  *   All rights reserved.
  *
diff --git a/wireless/bluetooth/bt_att.h b/wireless/bluetooth/bt_att.h
index c538794198..53e501a480 100644
--- a/wireless/bluetooth/bt_att.h
+++ b/wireless/bluetooth/bt_att.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/bluetooth/bt_att.h
  *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  *   Copyright (c) 2016, Intel Corporation
  *   All rights reserved.
  *
diff --git a/wireless/bluetooth/bt_buf.c b/wireless/bluetooth/bt_buf.c
index c7e217a8f4..4f370b5d13 100644
--- a/wireless/bluetooth/bt_buf.c
+++ b/wireless/bluetooth/bt_buf.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/bluetooth/bt_buf.c
  *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  *   Copyright (c) 2016, Intel Corporation
  *   All rights reserved.
  *
diff --git a/wireless/bluetooth/bt_buf.h b/wireless/bluetooth/bt_buf.h
index 8477bf717e..d6bd3a0876 100644
--- a/wireless/bluetooth/bt_buf.h
+++ b/wireless/bluetooth/bt_buf.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/bluetooth/bt_buf.h
  *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  *   Copyright (c) 2016, Intel Corporation
  *   All rights reserved.
  *
diff --git a/wireless/bluetooth/bt_conn.c b/wireless/bluetooth/bt_conn.c
index 7080a42d97..3bf15498e5 100644
--- a/wireless/bluetooth/bt_conn.c
+++ b/wireless/bluetooth/bt_conn.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/bluetooth/bt_conn.c
  *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  *   Copyright (c) 2016, Intel Corporation
  *   All rights reserved.
  *
diff --git a/wireless/bluetooth/bt_conn.h b/wireless/bluetooth/bt_conn.h
index 9973a70d74..2cedff50a9 100644
--- a/wireless/bluetooth/bt_conn.h
+++ b/wireless/bluetooth/bt_conn.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/bluetooth/bt_conn.h
  *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  *   Copyright (c) 2016, Intel Corporation
  *   All rights reserved.
  *
diff --git a/wireless/bluetooth/bt_gatt.c b/wireless/bluetooth/bt_gatt.c
index ae8a76cbb8..2e8d38e762 100644
--- a/wireless/bluetooth/bt_gatt.c
+++ b/wireless/bluetooth/bt_gatt.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/bluetooth/bt_gatt.c
  *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  *   Copyright (c) 2016, Intel Corporation
  *   All rights reserved.
  *
diff --git a/wireless/bluetooth/bt_hcicore.c b/wireless/bluetooth/bt_hcicore.c
index bff024e263..44e3b05ab8 100644
--- a/wireless/bluetooth/bt_hcicore.c
+++ b/wireless/bluetooth/bt_hcicore.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/bluetooth/bt_hcicore.c
  *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  *   Copyright (c) 2016, Intel Corporation
  *   All rights reserved.
  *
diff --git a/wireless/bluetooth/bt_hcicore.h b/wireless/bluetooth/bt_hcicore.h
index e4c29cbea4..e9609af743 100644
--- a/wireless/bluetooth/bt_hcicore.h
+++ b/wireless/bluetooth/bt_hcicore.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/bluetooth/bt_hcicore.h
  *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  *   Copyright (c) 2016, Intel Corporation
  *   All rights reserved.
  *
diff --git a/wireless/bluetooth/bt_ioctl.c b/wireless/bluetooth/bt_ioctl.c
index 13045f0661..75c0eb5fbc 100644
--- a/wireless/bluetooth/bt_ioctl.c
+++ b/wireless/bluetooth/bt_ioctl.c
@@ -1,6 +1,7 @@
 /****************************************************************************
  * wireless/bluetooth/bt_ioctl.c
- * Bluetooth network IOCTL handler
+ *
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
diff --git a/wireless/bluetooth/bt_ioctl.h b/wireless/bluetooth/bt_ioctl.h
index 4e220809f1..8bdd17d355 100644
--- a/wireless/bluetooth/bt_ioctl.h
+++ b/wireless/bluetooth/bt_ioctl.h
@@ -1,6 +1,7 @@
 /****************************************************************************
  * wireless/bluetooth/bt_ioctl.h
- * Bluetooth network IOCTL handler
+ *
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
diff --git a/wireless/bluetooth/bt_keys.c b/wireless/bluetooth/bt_keys.c
index f95c11b001..3dd32f7978 100644
--- a/wireless/bluetooth/bt_keys.c
+++ b/wireless/bluetooth/bt_keys.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/bluetooth/bt_keys.c
  *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  *   Copyright (c) 2016, Intel Corporation
  *   All rights reserved.
  *
diff --git a/wireless/bluetooth/bt_keys.h b/wireless/bluetooth/bt_keys.h
index 2eb8c9633b..1f8122b288 100644
--- a/wireless/bluetooth/bt_keys.h
+++ b/wireless/bluetooth/bt_keys.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/bluetooth/bt_keys.h
  *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  *   Copyright (c) 2016, Intel Corporation
  *   All rights reserved.
  *
diff --git a/wireless/bluetooth/bt_l2cap.c b/wireless/bluetooth/bt_l2cap.c
index 6465426c2d..d36e338bac 100644
--- a/wireless/bluetooth/bt_l2cap.c
+++ b/wireless/bluetooth/bt_l2cap.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/bluetooth/bt_l2cap.c
  *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  *   Copyright (c) 2016, Intel Corporation
  *   All rights reserved.
  *
diff --git a/wireless/bluetooth/bt_l2cap.h b/wireless/bluetooth/bt_l2cap.h
index 35cd1d14bc..1e3f4932d4 100644
--- a/wireless/bluetooth/bt_l2cap.h
+++ b/wireless/bluetooth/bt_l2cap.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/bluetooth/bt_l2cap.h
  *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  *   Copyright (c) 2016, Intel Corporation
  *   All rights reserved.
  *
diff --git a/wireless/bluetooth/bt_netdev.c b/wireless/bluetooth/bt_netdev.c
index bcf30ba384..4d7fecde31 100644
--- a/wireless/bluetooth/bt_netdev.c
+++ b/wireless/bluetooth/bt_netdev.c
@@ -1,6 +1,7 @@
 /****************************************************************************
  * wireless/bluetooth/bt_netdev.c
- * Network stack interface
+ *
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
diff --git a/wireless/bluetooth/bt_queue.c b/wireless/bluetooth/bt_queue.c
index 3d237f5910..f7dced541d 100644
--- a/wireless/bluetooth/bt_queue.c
+++ b/wireless/bluetooth/bt_queue.c
@@ -1,6 +1,7 @@
 /****************************************************************************
  * wireless/bluetooth/bt_queue.c
- * Inter-thread buffer queue management
+ *
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
diff --git a/wireless/bluetooth/bt_queue.h b/wireless/bluetooth/bt_queue.h
index 64bf8a99bf..d2f2b6cf5e 100644
--- a/wireless/bluetooth/bt_queue.h
+++ b/wireless/bluetooth/bt_queue.h
@@ -1,6 +1,7 @@
 /****************************************************************************
  * wireless/bluetooth/bt_queue.h
- * Inter-thread buffer queue management
+ *
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
diff --git a/wireless/bluetooth/bt_services.c b/wireless/bluetooth/bt_services.c
index da754349d2..0041e31d85 100644
--- a/wireless/bluetooth/bt_services.c
+++ b/wireless/bluetooth/bt_services.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/bluetooth/bt_services.c
  *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  *   Copyright (c) 2016, Intel Corporation
  *   All rights reserved.
  *
diff --git a/wireless/bluetooth/bt_smp.c b/wireless/bluetooth/bt_smp.c
index e4175f805e..932bb15080 100644
--- a/wireless/bluetooth/bt_smp.c
+++ b/wireless/bluetooth/bt_smp.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/bluetooth/bt_smp.c
  *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  *   Copyright (c) 2016, Intel Corporation
  *   All rights reserved.
  *
diff --git a/wireless/bluetooth/bt_smp.h b/wireless/bluetooth/bt_smp.h
index 151e7196b0..13919bd603 100644
--- a/wireless/bluetooth/bt_smp.h
+++ b/wireless/bluetooth/bt_smp.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/bluetooth/bt_smp.h
  *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  *   Copyright (c) 2016, Intel Corporation
  *   All rights reserved.
  *
diff --git a/wireless/bluetooth/bt_uuid.c b/wireless/bluetooth/bt_uuid.c
index 2ebfcd106b..21a5eea25d 100644
--- a/wireless/bluetooth/bt_uuid.c
+++ b/wireless/bluetooth/bt_uuid.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/bluetooth/bt_uuid.c
  *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  *   Copyright (c) 2016, Intel Corporation
  *   All rights reserved.
  *
diff --git a/wireless/ieee802154/CMakeLists.txt b/wireless/ieee802154/CMakeLists.txt
index 63883f78fa..c3e77e7b2b 100644
--- a/wireless/ieee802154/CMakeLists.txt
+++ b/wireless/ieee802154/CMakeLists.txt
@@ -1,6 +1,8 @@
 # ##############################################################################
 # wireless/ieee802154/CMakeLists.txt
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more contributor
 # license agreements.  See the NOTICE file distributed with this work for
 # additional information regarding copyright ownership.  The ASF licenses this
diff --git a/wireless/ieee802154/Make.defs b/wireless/ieee802154/Make.defs
index 0ef702d90f..2dd1d7c92f 100644
--- a/wireless/ieee802154/Make.defs
+++ b/wireless/ieee802154/Make.defs
@@ -1,6 +1,8 @@
 ############################################################################
 # wireless/ieee802154/Make.defs
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.  The
diff --git a/wireless/ieee802154/ieee802154_primitive.c b/wireless/ieee802154/ieee802154_primitive.c
index 03596b4295..dd23265424 100644
--- a/wireless/ieee802154/ieee802154_primitive.c
+++ b/wireless/ieee802154/ieee802154_primitive.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/ieee802154/ieee802154_primitive.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/ieee802154/mac802154.c b/wireless/ieee802154/mac802154.c
index 9789570c9c..768df5e72a 100644
--- a/wireless/ieee802154/mac802154.c
+++ b/wireless/ieee802154/mac802154.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/ieee802154/mac802154.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/ieee802154/mac802154.h b/wireless/ieee802154/mac802154.h
index 36377ba387..1629d83d2f 100644
--- a/wireless/ieee802154/mac802154.h
+++ b/wireless/ieee802154/mac802154.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/ieee802154/mac802154.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/ieee802154/mac802154_assoc.c b/wireless/ieee802154/mac802154_assoc.c
index 198c5e68a0..d9653b64d0 100644
--- a/wireless/ieee802154/mac802154_assoc.c
+++ b/wireless/ieee802154/mac802154_assoc.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/ieee802154/mac802154_assoc.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/ieee802154/mac802154_assoc.h b/wireless/ieee802154/mac802154_assoc.h
index 2d20e4534b..b9fc6d7eb3 100644
--- a/wireless/ieee802154/mac802154_assoc.h
+++ b/wireless/ieee802154/mac802154_assoc.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/ieee802154/mac802154_assoc.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/ieee802154/mac802154_bind.c b/wireless/ieee802154/mac802154_bind.c
index 435c971814..13631f2c02 100644
--- a/wireless/ieee802154/mac802154_bind.c
+++ b/wireless/ieee802154/mac802154_bind.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/ieee802154/mac802154_bind.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/ieee802154/mac802154_data.c b/wireless/ieee802154/mac802154_data.c
index 8d4729ce43..8ddd4e0673 100644
--- a/wireless/ieee802154/mac802154_data.c
+++ b/wireless/ieee802154/mac802154_data.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/ieee802154/mac802154_data.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/ieee802154/mac802154_data.h b/wireless/ieee802154/mac802154_data.h
index 10e5af4b4a..1da09697cd 100644
--- a/wireless/ieee802154/mac802154_data.h
+++ b/wireless/ieee802154/mac802154_data.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/ieee802154/mac802154_data.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/ieee802154/mac802154_device.c b/wireless/ieee802154/mac802154_device.c
index 536c14a399..a85e361fa9 100644
--- a/wireless/ieee802154/mac802154_device.c
+++ b/wireless/ieee802154/mac802154_device.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/ieee802154/mac802154_device.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/ieee802154/mac802154_disassoc.c b/wireless/ieee802154/mac802154_disassoc.c
index 38ca98d5fe..8a3e8f1cc5 100644
--- a/wireless/ieee802154/mac802154_disassoc.c
+++ b/wireless/ieee802154/mac802154_disassoc.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/ieee802154/mac802154_disassoc.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/ieee802154/mac802154_get_mhrlen.c b/wireless/ieee802154/mac802154_get_mhrlen.c
index f03ac55244..8681fb40dd 100644
--- a/wireless/ieee802154/mac802154_get_mhrlen.c
+++ b/wireless/ieee802154/mac802154_get_mhrlen.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/ieee802154/mac802154_get_mhrlen.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/ieee802154/mac802154_getset.c b/wireless/ieee802154/mac802154_getset.c
index f44e70cb12..3b9581f667 100644
--- a/wireless/ieee802154/mac802154_getset.c
+++ b/wireless/ieee802154/mac802154_getset.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/ieee802154/mac802154_getset.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/ieee802154/mac802154_gts.c b/wireless/ieee802154/mac802154_gts.c
index 8949e58430..63730d6071 100644
--- a/wireless/ieee802154/mac802154_gts.c
+++ b/wireless/ieee802154/mac802154_gts.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/ieee802154/mac802154_gts.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/ieee802154/mac802154_internal.h b/wireless/ieee802154/mac802154_internal.h
index aa060f590e..dc7434e586 100644
--- a/wireless/ieee802154/mac802154_internal.h
+++ b/wireless/ieee802154/mac802154_internal.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/ieee802154/mac802154_internal.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/ieee802154/mac802154_ioctl.c b/wireless/ieee802154/mac802154_ioctl.c
index 511e2706bd..5a537bd76e 100644
--- a/wireless/ieee802154/mac802154_ioctl.c
+++ b/wireless/ieee802154/mac802154_ioctl.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/ieee802154/mac802154_ioctl.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/ieee802154/mac802154_loopback.c b/wireless/ieee802154/mac802154_loopback.c
index 53005f6e80..1ed2afaaf6 100644
--- a/wireless/ieee802154/mac802154_loopback.c
+++ b/wireless/ieee802154/mac802154_loopback.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/ieee802154/mac802154_loopback.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/ieee802154/mac802154_netdev.c b/wireless/ieee802154/mac802154_netdev.c
index 2a813b8692..8510e6b8ff 100644
--- a/wireless/ieee802154/mac802154_netdev.c
+++ b/wireless/ieee802154/mac802154_netdev.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/ieee802154/mac802154_netdev.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/ieee802154/mac802154_orphan.c b/wireless/ieee802154/mac802154_orphan.c
index 2801ae389b..dd55cbddc8 100644
--- a/wireless/ieee802154/mac802154_orphan.c
+++ b/wireless/ieee802154/mac802154_orphan.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/ieee802154/mac802154_orphan.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/ieee802154/mac802154_poll.c b/wireless/ieee802154/mac802154_poll.c
index 63fb90802e..3341e9e21e 100644
--- a/wireless/ieee802154/mac802154_poll.c
+++ b/wireless/ieee802154/mac802154_poll.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/ieee802154/mac802154_poll.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/ieee802154/mac802154_poll.h b/wireless/ieee802154/mac802154_poll.h
index 81e988977c..bf9bf84b32 100644
--- a/wireless/ieee802154/mac802154_poll.h
+++ b/wireless/ieee802154/mac802154_poll.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/ieee802154/mac802154_poll.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/ieee802154/mac802154_purge.c b/wireless/ieee802154/mac802154_purge.c
index ae4be89008..43f813939b 100644
--- a/wireless/ieee802154/mac802154_purge.c
+++ b/wireless/ieee802154/mac802154_purge.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/ieee802154/mac802154_purge.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/ieee802154/mac802154_reset.c b/wireless/ieee802154/mac802154_reset.c
index 672453abfe..0be9992ffe 100644
--- a/wireless/ieee802154/mac802154_reset.c
+++ b/wireless/ieee802154/mac802154_reset.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/ieee802154/mac802154_reset.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/ieee802154/mac802154_rxenable.c b/wireless/ieee802154/mac802154_rxenable.c
index 401d58ce45..66f2562378 100644
--- a/wireless/ieee802154/mac802154_rxenable.c
+++ b/wireless/ieee802154/mac802154_rxenable.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/ieee802154/mac802154_rxenable.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/ieee802154/mac802154_scan.c b/wireless/ieee802154/mac802154_scan.c
index 27c5a534a1..1af5ffffb0 100644
--- a/wireless/ieee802154/mac802154_scan.c
+++ b/wireless/ieee802154/mac802154_scan.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/ieee802154/mac802154_scan.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/ieee802154/mac802154_scan.h b/wireless/ieee802154/mac802154_scan.h
index 9f49b1d3f2..03dcec0034 100644
--- a/wireless/ieee802154/mac802154_scan.h
+++ b/wireless/ieee802154/mac802154_scan.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/ieee802154/mac802154_scan.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/ieee802154/mac802154_start.c b/wireless/ieee802154/mac802154_start.c
index 5fa03755bb..ab93fe2e34 100644
--- a/wireless/ieee802154/mac802154_start.c
+++ b/wireless/ieee802154/mac802154_start.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/ieee802154/mac802154_start.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/ieee802154/mac802154_sync.c b/wireless/ieee802154/mac802154_sync.c
index f20e0491e6..a522d68812 100644
--- a/wireless/ieee802154/mac802154_sync.c
+++ b/wireless/ieee802154/mac802154_sync.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/ieee802154/mac802154_sync.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/pktradio/CMakeLists.txt b/wireless/pktradio/CMakeLists.txt
index a1fa20e17b..3e6d11751e 100644
--- a/wireless/pktradio/CMakeLists.txt
+++ b/wireless/pktradio/CMakeLists.txt
@@ -1,6 +1,8 @@
 # ##############################################################################
 # wireless/pktradio/CMakeLists.txt
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more contributor
 # license agreements.  See the NOTICE file distributed with this work for
 # additional information regarding copyright ownership.  The ASF licenses this
diff --git a/wireless/pktradio/Make.defs b/wireless/pktradio/Make.defs
index 8dd86f4943..19c7fe038c 100644
--- a/wireless/pktradio/Make.defs
+++ b/wireless/pktradio/Make.defs
@@ -1,6 +1,8 @@
 ############################################################################
 # wireless/pktradio/Make.defs
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.  The
diff --git a/wireless/pktradio/pktradio_loopback.c b/wireless/pktradio/pktradio_loopback.c
index 55f03dec36..610c18e2d4 100644
--- a/wireless/pktradio/pktradio_loopback.c
+++ b/wireless/pktradio/pktradio_loopback.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/pktradio/pktradio_loopback.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The
diff --git a/wireless/pktradio/pktradio_metadata.c b/wireless/pktradio/pktradio_metadata.c
index e3aa4a442f..4f0968aa6f 100644
--- a/wireless/pktradio/pktradio_metadata.c
+++ b/wireless/pktradio/pktradio_metadata.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * wireless/pktradio/pktradio_metadata.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.  The