diff --git a/wireless/CMakeLists.txt b/wireless/CMakeLists.txt
index 9fc2919e61a..72458cf1aef 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 24ad67151ce..f5dcd047933 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 58e90f5d8c5..141dd73d1f2 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 9df9daf4688..b3511bc3416 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 184d81431bb..1a3f088fe98 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 8eee4f33dc8..56af1733504 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 be5c87f8fad..11ffa3a8b70 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 c5387941980..53e501a4804 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 c7e217a8f4b..4f370b5d13f 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 8477bf717e1..d6bd3a08769 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 7080a42d97b..3bf15498e53 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 9973a70d74b..2cedff50a9f 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 ae8a76cbb8e..2e8d38e7623 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 bff024e2636..44e3b05ab88 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 e4c29cbea49..e9609af743e 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 13045f06611..75c0eb5fbc9 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 4e220809f10..8bdd17d3552 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 f95c11b0016..3dd32f79787 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 2eb8c9633b1..1f8122b2883 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 6465426c2d4..d36e338bacf 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 35cd1d14bc8..1e3f4932d41 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 bcf30ba3841..4d7fecde319 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 3d237f59103..f7dced541df 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 64bf8a99bf9..d2f2b6cf5e6 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 da754349d27..0041e31d859 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 e4175f805e2..932bb150808 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 151e7196b03..13919bd603c 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 2ebfcd106be..21a5eea25dc 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 63883f78fa2..c3e77e7b2b7 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 0ef702d90f7..2dd1d7c92f2 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 03596b42956..dd23265424f 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 9789570c9ca..768df5e72ae 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 36377ba3872..1629d83d2f7 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 198c5e68a06..d9653b64d0f 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 2d20e4534b6..b9fc6d7eb35 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 435c9718146..13631f2c025 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 8d4729ce433..8ddd4e06734 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 10e5af4b4a1..1da09697cd5 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 536c14a3997..a85e361fa98 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 38ca98d5fec..8a3e8f1cc50 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 f03ac55244c..8681fb40dd5 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 f44e70cb12d..3b9581f6672 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 8949e584301..63730d60711 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 aa060f590eb..dc7434e5862 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 511e2706bdb..5a537bd76e8 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 53005f6e80c..1ed2afaaf6f 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 2a813b86928..8510e6b8ffb 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 2801ae389bf..dd55cbddc87 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 63fb90802e3..3341e9e21e9 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 81e988977ce..bf9bf84b324 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 ae4be89008a..43f813939bb 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 672453abfeb..0be9992ffed 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 401d58ce458..66f2562378f 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 27c5a534a1b..1af5ffffb0e 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 9f49b1d3f23..03dcec00347 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 5fa03755bba..ab93fe2e348 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 f20e0491e67..a522d68812d 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 a1fa20e17b6..3e6d11751e2 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 8dd86f49436..19c7fe038c9 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 55f03dec361..610c18e2d46 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 e3aa4a442f3..4f0968aa6f2 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