License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.
By default all files without license information are under the default
license of the kernel, which is GPL version 2.
Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.
How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,
Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.
The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.
The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.
Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if <5
lines).
All documentation files were explicitly excluded.
The following heuristics were used to determine which SPDX license
identifiers to apply.
- when both scanners couldn't find any license traces, file was
considered to have no license information in it, and the top level
COPYING file license applied.
For non */uapi/* files that summary was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 11139
and resulted in the first patch in this series.
If that file was a */uapi/* path one, it was "GPL-2.0 WITH
Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 WITH Linux-syscall-note 930
and resulted in the second patch in this series.
- if a file had some form of licensing information in it, and was one
of the */uapi/* ones, it was denoted with the Linux-syscall-note if
any GPL family license was found in the file or had no licensing in
it (per prior point). Results summary:
SPDX license identifier # files
---------------------------------------------------|------
GPL-2.0 WITH Linux-syscall-note 270
GPL-2.0+ WITH Linux-syscall-note 169
((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21
((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17
LGPL-2.1+ WITH Linux-syscall-note 15
GPL-1.0+ WITH Linux-syscall-note 14
((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5
LGPL-2.0+ WITH Linux-syscall-note 4
LGPL-2.1 WITH Linux-syscall-note 3
((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3
((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1
and that resulted in the third patch in this series.
- when the two scanners agreed on the detected license(s), that became
the concluded license(s).
- when there was disagreement between the two scanners (one detected a
license but the other didn't, or they both detected different
licenses) a manual inspection of the file occurred.
- In most cases a manual inspection of the information in the file
resulted in a clear resolution of the license that should apply (and
which scanner probably needed to revisit its heuristics).
- When it was not immediately clear, the license identifier was
confirmed with lawyers working with the Linux Foundation.
- If there was any question as to the appropriate license identifier,
the file was flagged for further research and to be revisited later
in time.
In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.
Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights. The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.
Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.
In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.
Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
- a full scancode scan run, collecting the matched texts, detected
license ids and scores
- reviewing anything where there was a license detected (about 500+
files) to ensure that the applied SPDX license was correct
- reviewing anything where there was no detection but the patch license
was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
SPDX license was correct
This produced a worksheet with 20 files needing minor correction. This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.
These .csv files were then reviewed by Greg. Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected. This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.) Finally Greg ran the script using the .csv files to
generate the patches.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/net/6lowpan/6lowpan_i.h b/net/6lowpan/6lowpan_i.h
index a67caee..53cf446 100644
--- a/net/6lowpan/6lowpan_i.h
+++ b/net/6lowpan/6lowpan_i.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __6LOWPAN_I_H
#define __6LOWPAN_I_H
diff --git a/net/6lowpan/Makefile b/net/6lowpan/Makefile
index 12d131a..2247b96 100644
--- a/net/6lowpan/Makefile
+++ b/net/6lowpan/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_6LOWPAN) += 6lowpan.o
6lowpan-y := core.o iphc.o nhc.o ndisc.o
diff --git a/net/6lowpan/nhc.h b/net/6lowpan/nhc.h
index 8030414..67951c4 100644
--- a/net/6lowpan/nhc.h
+++ b/net/6lowpan/nhc.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __6LOWPAN_NHC_H
#define __6LOWPAN_NHC_H
diff --git a/net/802/Makefile b/net/802/Makefile
index 37e654d..19406a8 100644
--- a/net/802/Makefile
+++ b/net/802/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the Linux 802.x protocol layers.
#
diff --git a/net/8021q/Makefile b/net/8021q/Makefile
index 7bc8db0..9b70345 100644
--- a/net/8021q/Makefile
+++ b/net/8021q/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the Linux VLAN layer.
#
diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h
index df8bd65..0e7afdf 100644
--- a/net/8021q/vlan.h
+++ b/net/8021q/vlan.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __BEN_VLAN_802_1Q_INC__
#define __BEN_VLAN_802_1Q_INC__
diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c
index 0bc31de..64aa9f7 100644
--- a/net/8021q/vlan_core.c
+++ b/net/8021q/vlan_core.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/if_vlan.h>
diff --git a/net/8021q/vlanproc.h b/net/8021q/vlanproc.h
index 8838a2e..48cd4b4 100644
--- a/net/8021q/vlanproc.h
+++ b/net/8021q/vlanproc.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __BEN_VLAN_PROC_INC__
#define __BEN_VLAN_PROC_INC__
diff --git a/net/9p/Makefile b/net/9p/Makefile
index 697ea7c..c0486cf 100644
--- a/net/9p/Makefile
+++ b/net/9p/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_NET_9P) := 9pnet.o
obj-$(CONFIG_NET_9P_XEN) += 9pnet_xen.o
obj-$(CONFIG_NET_9P_VIRTIO) += 9pnet_virtio.o
diff --git a/net/Makefile b/net/Makefile
index ae2fe22..14fede5 100644
--- a/net/Makefile
+++ b/net/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the linux networking.
#
diff --git a/net/appletalk/dev.c b/net/appletalk/dev.c
index e4158b8..284c8e5 100644
--- a/net/appletalk/dev.c
+++ b/net/appletalk/dev.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Moved here from drivers/net/net_init.c, which is:
* Written 1993,1994,1995 by Donald Becker.
diff --git a/net/appletalk/sysctl_net_atalk.c b/net/appletalk/sysctl_net_atalk.c
index ebb8643..c744a85 100644
--- a/net/appletalk/sysctl_net_atalk.c
+++ b/net/appletalk/sysctl_net_atalk.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* sysctl_net_atalk.c: sysctl interface to net AppleTalk subsystem.
*
diff --git a/net/atm/Makefile b/net/atm/Makefile
index cc50bd1..bfec0f2 100644
--- a/net/atm/Makefile
+++ b/net/atm/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the ATM Protocol Families.
#
diff --git a/net/atm/addr.c b/net/atm/addr.c
index dcda35c..0530b63 100644
--- a/net/atm/addr.c
+++ b/net/atm/addr.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/* net/atm/addr.c - Local ATM address registry */
/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
diff --git a/net/atm/addr.h b/net/atm/addr.h
index 6837e9e..da3f8484 100644
--- a/net/atm/addr.h
+++ b/net/atm/addr.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/* net/atm/addr.h - Local ATM address registry */
/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
diff --git a/net/atm/atm_misc.c b/net/atm/atm_misc.c
index 876fbe8..a30b83c 100644
--- a/net/atm/atm_misc.c
+++ b/net/atm/atm_misc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/* net/atm/atm_misc.c - Various functions for use by ATM drivers */
/* Written 1995-2000 by Werner Almesberger, EPFL ICA */
diff --git a/net/atm/atm_sysfs.c b/net/atm/atm_sysfs.c
index 350bf62..5d2fed9 100644
--- a/net/atm/atm_sysfs.c
+++ b/net/atm/atm_sysfs.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/* ATM driver model support. */
#include <linux/kernel.h>
diff --git a/net/atm/common.h b/net/atm/common.h
index 959436b..d9d5837 100644
--- a/net/atm/common.h
+++ b/net/atm/common.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/* net/atm/common.h - ATM sockets (common part for PVC and SVC) */
/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
diff --git a/net/atm/ioctl.c b/net/atm/ioctl.c
index bbd3b63..2ff0e5e4 100644
--- a/net/atm/ioctl.c
+++ b/net/atm/ioctl.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/* ATM ioctl handling */
/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
diff --git a/net/atm/lec.h b/net/atm/lec.h
index 4149db1..be0e266 100644
--- a/net/atm/lec.h
+++ b/net/atm/lec.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Lan Emulation client header file
*
diff --git a/net/atm/lec_arpc.h b/net/atm/lec_arpc.h
index d923f53..1205d879 100644
--- a/net/atm/lec_arpc.h
+++ b/net/atm/lec_arpc.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Lec arp cache
*
diff --git a/net/atm/mpc.h b/net/atm/mpc.h
index cfc7b74..454abd0 100644
--- a/net/atm/mpc.h
+++ b/net/atm/mpc.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _MPC_H_
#define _MPC_H_
diff --git a/net/atm/mpoa_caches.c b/net/atm/mpoa_caches.c
index 4ccaa16..e01450b 100644
--- a/net/atm/mpoa_caches.c
+++ b/net/atm/mpoa_caches.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/types.h>
#include <linux/atmmpc.h>
#include <linux/slab.h>
diff --git a/net/atm/mpoa_caches.h b/net/atm/mpoa_caches.h
index 30fe348..6a26666 100644
--- a/net/atm/mpoa_caches.h
+++ b/net/atm/mpoa_caches.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef MPOA_CACHES_H
#define MPOA_CACHES_H
diff --git a/net/atm/mpoa_proc.c b/net/atm/mpoa_proc.c
index 2df34eb..8a0c17e 100644
--- a/net/atm/mpoa_proc.c
+++ b/net/atm/mpoa_proc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__
#ifdef CONFIG_PROC_FS
diff --git a/net/atm/proc.c b/net/atm/proc.c
index 4caca2a..642f927 100644
--- a/net/atm/proc.c
+++ b/net/atm/proc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/* net/atm/proc.c - ATM /proc interface
*
* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA
diff --git a/net/atm/protocols.h b/net/atm/protocols.h
index acdfc85..18d4d00 100644
--- a/net/atm/protocols.h
+++ b/net/atm/protocols.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/* net/atm/protocols.h - ATM protocol handler entry points */
/* Written 1995-1997 by Werner Almesberger, EPFL LRC */
diff --git a/net/atm/pvc.c b/net/atm/pvc.c
index 040207ec..e1140b3 100644
--- a/net/atm/pvc.c
+++ b/net/atm/pvc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/* net/atm/pvc.c - ATM PVC sockets */
/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
diff --git a/net/atm/raw.c b/net/atm/raw.c
index 821c079..ee10e8d 100644
--- a/net/atm/raw.c
+++ b/net/atm/raw.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/* net/atm/raw.c - Raw AAL0 and AAL5 transports */
/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
diff --git a/net/atm/resources.c b/net/atm/resources.c
index 9182447..bada395 100644
--- a/net/atm/resources.c
+++ b/net/atm/resources.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/* net/atm/resources.c - Statically allocated resources */
/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
diff --git a/net/atm/resources.h b/net/atm/resources.h
index 521431e..048232e 100644
--- a/net/atm/resources.h
+++ b/net/atm/resources.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/* net/atm/resources.h - ATM-related resources */
/* Written 1995-1998 by Werner Almesberger, EPFL LRC/ICA */
diff --git a/net/atm/signaling.c b/net/atm/signaling.c
index 0a20f6e..6c11cdf 100644
--- a/net/atm/signaling.c
+++ b/net/atm/signaling.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/* net/atm/signaling.c - ATM signaling */
/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
diff --git a/net/atm/signaling.h b/net/atm/signaling.h
index 08b2a69..2df8220f 100644
--- a/net/atm/signaling.h
+++ b/net/atm/signaling.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/* net/atm/signaling.h - ATM signaling */
/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
diff --git a/net/atm/svc.c b/net/atm/svc.c
index 5589de7..c458adc 100644
--- a/net/atm/svc.c
+++ b/net/atm/svc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/* net/atm/svc.c - ATM SVC sockets */
/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
diff --git a/net/ax25/Makefile b/net/ax25/Makefile
index 43c46d2..2e53aff 100644
--- a/net/ax25/Makefile
+++ b/net/ax25/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the Linux AX.25 layer.
#
diff --git a/net/bluetooth/Makefile b/net/bluetooth/Makefile
index 5d0a113..fda41c0 100644
--- a/net/bluetooth/Makefile
+++ b/net/bluetooth/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the Linux Bluetooth subsystem.
#
diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c
index aa300f3..d5c7c89 100644
--- a/net/bluetooth/hci_sysfs.c
+++ b/net/bluetooth/hci_sysfs.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/* Bluetooth HCI driver model support. */
#include <linux/module.h>
diff --git a/net/bridge/Makefile b/net/bridge/Makefile
index 40b1ede..f760e62 100644
--- a/net/bridge/Makefile
+++ b/net/bridge/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the IEEE 802.1d ethernet bridging layer.
#
diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c
index ca01def..31ddff2 100644
--- a/net/bridge/br_mdb.c
+++ b/net/bridge/br_mdb.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/err.h>
#include <linux/igmp.h>
#include <linux/kernel.h>
diff --git a/net/bridge/br_switchdev.c b/net/bridge/br_switchdev.c
index f6b1c7d..9700e0f 100644
--- a/net/bridge/br_switchdev.c
+++ b/net/bridge/br_switchdev.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/netdevice.h>
diff --git a/net/bridge/netfilter/Makefile b/net/bridge/netfilter/Makefile
index be4d0ce..2f28e16 100644
--- a/net/bridge/netfilter/Makefile
+++ b/net/bridge/netfilter/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the netfilter modules for Link Layer filtering on a bridge.
#
diff --git a/net/caif/Makefile b/net/caif/Makefile
index cc2b511..4f6c051 100644
--- a/net/caif/Makefile
+++ b/net/caif/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
ccflags-$(CONFIG_CAIF_DEBUG) := -DDEBUG
caif-y := caif_dev.o \
diff --git a/net/can/Makefile b/net/can/Makefile
index 10936754..1242bbb 100644
--- a/net/can/Makefile
+++ b/net/can/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the Linux Controller Area Network core.
#
diff --git a/net/ceph/Makefile b/net/ceph/Makefile
index 6a51809..b4bded4 100644
--- a/net/ceph/Makefile
+++ b/net/ceph/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for CEPH filesystem.
#
diff --git a/net/ceph/armor.c b/net/ceph/armor.c
index 1fc1ee1..0db8065 100644
--- a/net/ceph/armor.c
+++ b/net/ceph/armor.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/errno.h>
diff --git a/net/ceph/auth.c b/net/ceph/auth.c
index 48bb8d9..dbde2b3 100644
--- a/net/ceph/auth.c
+++ b/net/ceph/auth.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/ceph/ceph_debug.h>
#include <linux/module.h>
diff --git a/net/ceph/auth_none.c b/net/ceph/auth_none.c
index df45e46..41d2a0c 100644
--- a/net/ceph/auth_none.c
+++ b/net/ceph/auth_none.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/ceph/ceph_debug.h>
diff --git a/net/ceph/auth_none.h b/net/ceph/auth_none.h
index 6202153..860ed98 100644
--- a/net/ceph/auth_none.h
+++ b/net/ceph/auth_none.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _FS_CEPH_AUTH_NONE_H
#define _FS_CEPH_AUTH_NONE_H
diff --git a/net/ceph/auth_x.c b/net/ceph/auth_x.c
index 8757fb8..2f4a1ba 100644
--- a/net/ceph/auth_x.c
+++ b/net/ceph/auth_x.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/ceph/ceph_debug.h>
diff --git a/net/ceph/auth_x.h b/net/ceph/auth_x.h
index 48e9ad4..454cb54 100644
--- a/net/ceph/auth_x.h
+++ b/net/ceph/auth_x.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _FS_CEPH_AUTH_X_H
#define _FS_CEPH_AUTH_X_H
diff --git a/net/ceph/auth_x_protocol.h b/net/ceph/auth_x_protocol.h
index 671d305..32c13d7 100644
--- a/net/ceph/auth_x_protocol.h
+++ b/net/ceph/auth_x_protocol.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __FS_CEPH_AUTH_X_PROTOCOL
#define __FS_CEPH_AUTH_X_PROTOCOL
diff --git a/net/ceph/buffer.c b/net/ceph/buffer.c
index add5f92..5622763 100644
--- a/net/ceph/buffer.c
+++ b/net/ceph/buffer.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/ceph/ceph_debug.h>
diff --git a/net/ceph/ceph_fs.c b/net/ceph/ceph_fs.c
index dcbe67f..756a2dc 100644
--- a/net/ceph/ceph_fs.c
+++ b/net/ceph/ceph_fs.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Some non-inline ceph helpers
*/
diff --git a/net/ceph/ceph_strings.c b/net/ceph/ceph_strings.c
index 19b7d8a..10e0149 100644
--- a/net/ceph/ceph_strings.c
+++ b/net/ceph/ceph_strings.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Ceph string constants
*/
diff --git a/net/ceph/cls_lock_client.c b/net/ceph/cls_lock_client.c
index 08ada89..8d2032b 100644
--- a/net/ceph/cls_lock_client.c
+++ b/net/ceph/cls_lock_client.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/ceph/ceph_debug.h>
#include <linux/types.h>
diff --git a/net/ceph/crush/crush.c b/net/ceph/crush/crush.c
index 4b428f4..3d70244 100644
--- a/net/ceph/crush/crush.c
+++ b/net/ceph/crush/crush.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#ifdef __KERNEL__
# include <linux/slab.h>
# include <linux/crush/crush.h>
diff --git a/net/ceph/crush/hash.c b/net/ceph/crush/hash.c
index ed123af..e5cc603 100644
--- a/net/ceph/crush/hash.c
+++ b/net/ceph/crush/hash.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#ifdef __KERNEL__
# include <linux/crush/hash.h>
#else
diff --git a/net/ceph/crypto.c b/net/ceph/crypto.c
index 46008d5..489610a 100644
--- a/net/ceph/crypto.c
+++ b/net/ceph/crypto.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/ceph/ceph_debug.h>
diff --git a/net/ceph/crypto.h b/net/ceph/crypto.h
index 58d83aa..bb45c7d 100644
--- a/net/ceph/crypto.h
+++ b/net/ceph/crypto.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _FS_CEPH_CRYPTO_H
#define _FS_CEPH_CRYPTO_H
diff --git a/net/ceph/debugfs.c b/net/ceph/debugfs.c
index fa5233e..1eef680 100644
--- a/net/ceph/debugfs.c
+++ b/net/ceph/debugfs.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/ceph/ceph_debug.h>
#include <linux/device.h>
diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index a67298c..ad93342 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/ceph/ceph_debug.h>
#include <linux/crc32c.h>
diff --git a/net/ceph/mon_client.c b/net/ceph/mon_client.c
index 63edc6e..9ae1bab 100644
--- a/net/ceph/mon_client.c
+++ b/net/ceph/mon_client.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/ceph/ceph_debug.h>
#include <linux/module.h>
diff --git a/net/ceph/msgpool.c b/net/ceph/msgpool.c
index aaed59a..7257153 100644
--- a/net/ceph/msgpool.c
+++ b/net/ceph/msgpool.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/ceph/ceph_debug.h>
#include <linux/err.h>
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index e02f01f..2814dba 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/ceph/ceph_debug.h>
diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
index 79d14d7..0da27c6 100644
--- a/net/ceph/osdmap.c
+++ b/net/ceph/osdmap.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/ceph/ceph_debug.h>
diff --git a/net/ceph/pagelist.c b/net/ceph/pagelist.c
index ce09f73..2ea0564 100644
--- a/net/ceph/pagelist.c
+++ b/net/ceph/pagelist.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/module.h>
#include <linux/gfp.h>
#include <linux/slab.h>
diff --git a/net/ceph/pagevec.c b/net/ceph/pagevec.c
index 1a7c9a7..ee43bc1 100644
--- a/net/ceph/pagevec.c
+++ b/net/ceph/pagevec.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/ceph/ceph_debug.h>
#include <linux/module.h>
diff --git a/net/ceph/string_table.c b/net/ceph/string_table.c
index 22fb96e..3191d9d 100644
--- a/net/ceph/string_table.c
+++ b/net/ceph/string_table.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/slab.h>
#include <linux/gfp.h>
#include <linux/string.h>
diff --git a/net/core/Makefile b/net/core/Makefile
index 56d771a..1fd0a9c 100644
--- a/net/core/Makefile
+++ b/net/core/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the Linux networking core.
#
diff --git a/net/core/datagram.c b/net/core/datagram.c
index f7fb7e3..3964c10 100644
--- a/net/core/datagram.c
+++ b/net/core/datagram.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* SUCS NET3:
*
diff --git a/net/core/dev_ioctl.c b/net/core/dev_ioctl.c
index f9c7a88..7e690d0 100644
--- a/net/core/dev_ioctl.c
+++ b/net/core/dev_ioctl.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/kmod.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
diff --git a/net/core/gro_cells.c b/net/core/gro_cells.c
index 814e58a..4b54e5f 100644
--- a/net/core/gro_cells.c
+++ b/net/core/gro_cells.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/skbuff.h>
#include <linux/slab.h>
#include <linux/netdevice.h>
diff --git a/net/core/net-procfs.c b/net/core/net-procfs.c
index 4847964..615ccab 100644
--- a/net/core/net-procfs.c
+++ b/net/core/net-procfs.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/netdevice.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
diff --git a/net/core/net-sysfs.h b/net/core/net-sysfs.h
index 2745a1b..006876c 100644
--- a/net/core/net-sysfs.h
+++ b/net/core/net-sysfs.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __NET_SYSFS_H__
#define __NET_SYSFS_H__
diff --git a/net/core/net-traces.c b/net/core/net-traces.c
index 1132820..71f2095 100644
--- a/net/core/net-traces.c
+++ b/net/core/net-traces.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* consolidates trace point definitions
*
diff --git a/net/core/sock_reuseport.c b/net/core/sock_reuseport.c
index b1e0dbe..5eeb1d2 100644
--- a/net/core/sock_reuseport.c
+++ b/net/core/sock_reuseport.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* To speed up listener socket lookup, create an array to store all sockets
* listening on the same port. This allows a decision to be made after finding
diff --git a/net/core/stream.c b/net/core/stream.c
index 20231db..1cff9c6 100644
--- a/net/core/stream.c
+++ b/net/core/stream.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* SUCS NET3:
*
diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c
index b7cd9aa..cbc3dde 100644
--- a/net/core/sysctl_net_core.c
+++ b/net/core/sysctl_net_core.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/* -*- linux-c -*-
* sysctl_net_core.c: sysctl interface to net core subsystem.
*
diff --git a/net/core/tso.c b/net/core/tso.c
index 5dca7ce..43f4eba 100644
--- a/net/core/tso.c
+++ b/net/core/tso.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/export.h>
#include <linux/if_vlan.h>
#include <net/ip.h>
diff --git a/net/dccp/Makefile b/net/dccp/Makefile
index 5c8362b..2e7b560 100644
--- a/net/dccp/Makefile
+++ b/net/dccp/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_IP_DCCP) += dccp.o dccp_ipv4.o
dccp-y := ccid.o feat.o input.o minisocks.o options.o output.o proto.o timer.o \
diff --git a/net/dccp/ccids/lib/tfrc.c b/net/dccp/ccids/lib/tfrc.c
index 62b5828..d7f265e 100644
--- a/net/dccp/ccids/lib/tfrc.c
+++ b/net/dccp/ccids/lib/tfrc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* TFRC library initialisation
*
diff --git a/net/decnet/Makefile b/net/decnet/Makefile
index e44003a..9e38122 100644
--- a/net/decnet/Makefile
+++ b/net/decnet/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_DECNET) += decnet.o
diff --git a/net/decnet/dn_dev.c b/net/decnet/dn_dev.c
index 4d339de..df042b6 100644
--- a/net/decnet/dn_dev.c
+++ b/net/decnet/dn_dev.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* DECnet An implementation of the DECnet protocol suite for the LINUX
* operating system. DECnet is implemented using the BSD Socket
diff --git a/net/decnet/dn_fib.c b/net/decnet/dn_fib.c
index 3d37464..b37a1b8 100644
--- a/net/decnet/dn_fib.c
+++ b/net/decnet/dn_fib.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* DECnet An implementation of the DECnet protocol suite for the LINUX
* operating system. DECnet is implemented using the BSD Socket
diff --git a/net/decnet/dn_neigh.c b/net/decnet/dn_neigh.c
index 22bf0b9..528119a 100644
--- a/net/decnet/dn_neigh.c
+++ b/net/decnet/dn_neigh.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* DECnet An implementation of the DECnet protocol suite for the LINUX
* operating system. DECnet is implemented using the BSD Socket
diff --git a/net/decnet/dn_rules.c b/net/decnet/dn_rules.c
index 295bbd6..c795c3f 100644
--- a/net/decnet/dn_rules.c
+++ b/net/decnet/dn_rules.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* DECnet An implementation of the DECnet protocol suite for the LINUX
diff --git a/net/decnet/dn_table.c b/net/decnet/dn_table.c
index 2326754..08667f6 100644
--- a/net/decnet/dn_table.c
+++ b/net/decnet/dn_table.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* DECnet An implementation of the DECnet protocol suite for the LINUX
* operating system. DECnet is implemented using the BSD Socket
diff --git a/net/decnet/dn_timer.c b/net/decnet/dn_timer.c
index 1d330fd..f430dae 100644
--- a/net/decnet/dn_timer.c
+++ b/net/decnet/dn_timer.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* DECnet An implementation of the DECnet protocol suite for the LINUX
* operating system. DECnet is implemented using the BSD Socket
diff --git a/net/decnet/sysctl_net_decnet.c b/net/decnet/sysctl_net_decnet.c
index 6c7da6c..55bf64a 100644
--- a/net/decnet/sysctl_net_decnet.c
+++ b/net/decnet/sysctl_net_decnet.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* DECnet An implementation of the DECnet protocol suite for the LINUX
* operating system. DECnet is implemented using the BSD Socket
diff --git a/net/dsa/Makefile b/net/dsa/Makefile
index fcce25d..3d3c741 100644
--- a/net/dsa/Makefile
+++ b/net/dsa/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
# the core
obj-$(CONFIG_NET_DSA) += dsa_core.o
dsa_core-y += dsa.o dsa2.o legacy.o port.o slave.o switch.o
diff --git a/net/ieee802154/6lowpan/6lowpan_i.h b/net/ieee802154/6lowpan/6lowpan_i.h
index ac7c96b..d8de3bc 100644
--- a/net/ieee802154/6lowpan/6lowpan_i.h
+++ b/net/ieee802154/6lowpan/6lowpan_i.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __IEEE802154_6LOWPAN_I_H__
#define __IEEE802154_6LOWPAN_I_H__
diff --git a/net/ieee802154/Makefile b/net/ieee802154/Makefile
index 9b92ade..f05b7bd 100644
--- a/net/ieee802154/Makefile
+++ b/net/ieee802154/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_IEEE802154) += ieee802154.o
obj-$(CONFIG_IEEE802154_SOCKET) += ieee802154_socket.o
obj-y += 6lowpan/
diff --git a/net/ieee802154/core.h b/net/ieee802154/core.h
index 81141f5..1c19f57 100644
--- a/net/ieee802154/core.h
+++ b/net/ieee802154/core.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __IEEE802154_CORE_H
#define __IEEE802154_CORE_H
diff --git a/net/ieee802154/nl802154.h b/net/ieee802154/nl802154.h
index 3846a89..8c4b6d0 100644
--- a/net/ieee802154/nl802154.h
+++ b/net/ieee802154/nl802154.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __IEEE802154_NL802154_H
#define __IEEE802154_NL802154_H
diff --git a/net/ieee802154/rdev-ops.h b/net/ieee802154/rdev-ops.h
index 4441c63..598f5af 100644
--- a/net/ieee802154/rdev-ops.h
+++ b/net/ieee802154/rdev-ops.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __CFG802154_RDEV_OPS
#define __CFG802154_RDEV_OPS
diff --git a/net/ieee802154/sysfs.h b/net/ieee802154/sysfs.h
index aa42e39..337545b 100644
--- a/net/ieee802154/sysfs.h
+++ b/net/ieee802154/sysfs.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __IEEE802154_SYSFS_H
#define __IEEE802154_SYSFS_H
diff --git a/net/ieee802154/trace.h b/net/ieee802154/trace.h
index 9a471e41..19c2e5d 100644
--- a/net/ieee802154/trace.h
+++ b/net/ieee802154/trace.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/* Based on net/wireless/trace.h */
#undef TRACE_SYSTEM
diff --git a/net/ipv4/Makefile b/net/ipv4/Makefile
index afcb435..c6c8ad1 100644
--- a/net/ipv4/Makefile
+++ b/net/ipv4/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the Linux TCP/IP (INET) layer.
#
diff --git a/net/ipv4/fib_lookup.h b/net/ipv4/fib_lookup.h
index 5b2af19..e6ff282 100644
--- a/net/ipv4/fib_lookup.h
+++ b/net/ipv4/fib_lookup.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _FIB_LOOKUP_H
#define _FIB_LOOKUP_H
diff --git a/net/ipv4/fib_notifier.c b/net/ipv4/fib_notifier.c
index cfd420b0..b804ccb 100644
--- a/net/ipv4/fib_notifier.c
+++ b/net/ipv4/fib_notifier.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/rtnetlink.h>
#include <linux/notifier.h>
#include <linux/socket.h>
diff --git a/net/ipv4/ip_forward.c b/net/ipv4/ip_forward.c
index 9f0a7b9..2dd21c3 100644
--- a/net/ipv4/ip_forward.c
+++ b/net/ipv4/ip_forward.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* INET An implementation of the TCP/IP protocol suite for the LINUX
* operating system. INET is implemented using the BSD Socket
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index 46408c2..df8fe05 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* INET An implementation of the TCP/IP protocol suite for the LINUX
* operating system. INET is implemented using the BSD Socket
diff --git a/net/ipv4/ip_options.c b/net/ipv4/ip_options.c
index 525ae88..ed194d4 100644
--- a/net/ipv4/ip_options.c
+++ b/net/ipv4/ip_options.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* INET An implementation of the TCP/IP protocol suite for the LINUX
* operating system. INET is implemented using the BSD Socket
diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index a599aa8..60fb1eb 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* INET An implementation of the TCP/IP protocol suite for the LINUX
* operating system. INET is implemented using the BSD Socket
diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c
index 4c5dfe6..abdebca 100644
--- a/net/ipv4/ipconfig.c
+++ b/net/ipv4/ipconfig.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Automatic Configuration of IP -- use DHCP, BOOTP, RARP, or
* user-supplied information to configure own IP address and routes.
diff --git a/net/ipv4/netfilter/Makefile b/net/ipv4/netfilter/Makefile
index f462fee..adcdae3 100644
--- a/net/ipv4/netfilter/Makefile
+++ b/net/ipv4/netfilter/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the netfilter modules on top of IPv4.
#
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 0d3c038..0989e73 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* sysctl_net_ipv4.c: sysctl interface to net IPV4 subsystem.
*
diff --git a/net/ipv4/tcp_fastopen.c b/net/ipv4/tcp_fastopen.c
index e3c3322..fbbeda6 100644
--- a/net/ipv4/tcp_fastopen.c
+++ b/net/ipv4/tcp_fastopen.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/crypto.h>
#include <linux/err.h>
#include <linux/init.h>
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 7eec338..5a87a00 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* INET An implementation of the TCP/IP protocol suite for the LINUX
* operating system. INET is implemented using the BSD Socket
diff --git a/net/ipv4/tcp_metrics.c b/net/ipv4/tcp_metrics.c
index 102b2c9..0f0d740 100644
--- a/net/ipv4/tcp_metrics.c
+++ b/net/ipv4/tcp_metrics.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/rcupdate.h>
#include <linux/spinlock.h>
#include <linux/jiffies.h>
diff --git a/net/ipv4/tcp_recovery.c b/net/ipv4/tcp_recovery.c
index 449cd91..be8ef1e 100644
--- a/net/ipv4/tcp_recovery.c
+++ b/net/ipv4/tcp_recovery.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/tcp.h>
#include <net/tcp.h>
diff --git a/net/ipv4/tcp_vegas.h b/net/ipv4/tcp_vegas.h
index 248cfc0..4f24d0e 100644
--- a/net/ipv4/tcp_vegas.h
+++ b/net/ipv4/tcp_vegas.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* TCP Vegas congestion control interface
*/
diff --git a/net/ipv4/udp_impl.h b/net/ipv4/udp_impl.h
index a8cf8c6..e7d18b1 100644
--- a/net/ipv4/udp_impl.h
+++ b/net/ipv4/udp_impl.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _UDP4_IMPL_H
#define _UDP4_IMPL_H
#include <net/udp.h>
diff --git a/net/ipv4/xfrm4_input.c b/net/ipv4/xfrm4_input.c
index 1fc6841..e50b7fe 100644
--- a/net/ipv4/xfrm4_input.c
+++ b/net/ipv4/xfrm4_input.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* xfrm4_input.c
*
diff --git a/net/ipv4/xfrm4_policy.c b/net/ipv4/xfrm4_policy.c
index d7bf0b0..05017e2 100644
--- a/net/ipv4/xfrm4_policy.c
+++ b/net/ipv4/xfrm4_policy.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* xfrm4_policy.c
*
diff --git a/net/ipv4/xfrm4_state.c b/net/ipv4/xfrm4_state.c
index d6660a8..80c40b4 100644
--- a/net/ipv4/xfrm4_state.c
+++ b/net/ipv4/xfrm4_state.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* xfrm4_state.c
*
diff --git a/net/ipv6/Makefile b/net/ipv6/Makefile
index 10e3423..e0026fa 100644
--- a/net/ipv6/Makefile
+++ b/net/ipv6/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the Linux TCP/IP (INET6) layer.
#
diff --git a/net/ipv6/addrlabel.c b/net/ipv6/addrlabel.c
index b055bc7..f664871 100644
--- a/net/ipv6/addrlabel.c
+++ b/net/ipv6/addrlabel.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* IPv6 Address Label subsystem
* for the IPv6 "Default" Source Address Selection
diff --git a/net/ipv6/ila/ila_lwt.c b/net/ipv6/ila/ila_lwt.c
index 0c02a09..696281b4 100644
--- a/net/ipv6/ila/ila_lwt.c
+++ b/net/ipv6/ila/ila_lwt.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/errno.h>
#include <linux/ip.h>
#include <linux/kernel.h>
diff --git a/net/ipv6/ila/ila_xlat.c b/net/ipv6/ila/ila_xlat.c
index 5bd419c..3123b9d 100644
--- a/net/ipv6/ila/ila_xlat.c
+++ b/net/ipv6/ila/ila_xlat.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/jhash.h>
#include <linux/netfilter.h>
#include <linux/rcupdate.h>
diff --git a/net/ipv6/ip6_checksum.c b/net/ipv6/ip6_checksum.c
index c0cbcb2..ec43d18 100644
--- a/net/ipv6/ip6_checksum.c
+++ b/net/ipv6/ip6_checksum.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <net/ip.h>
#include <net/udp.h>
#include <net/udplite.h>
diff --git a/net/ipv6/ip6_icmp.c b/net/ipv6/ip6_icmp.c
index 713676f..0204549 100644
--- a/net/ipv6/ip6_icmp.c
+++ b/net/ipv6/ip6_icmp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/export.h>
#include <linux/icmpv6.h>
#include <linux/mutex.h>
diff --git a/net/ipv6/netfilter/Makefile b/net/ipv6/netfilter/Makefile
index fe180c9..c6ee0cd 100644
--- a/net/ipv6/netfilter/Makefile
+++ b/net/ipv6/netfilter/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the netfilter modules on top of IPv6.
#
diff --git a/net/ipv6/sysctl_net_ipv6.c b/net/ipv6/sysctl_net_ipv6.c
index 6fbf8ae..f7051ba 100644
--- a/net/ipv6/sysctl_net_ipv6.c
+++ b/net/ipv6/sysctl_net_ipv6.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* sysctl_net_ipv6.c: sysctl interface to net IPV6 subsystem.
*
diff --git a/net/ipv6/udp_impl.h b/net/ipv6/udp_impl.h
index f180b3d..7903e21 100644
--- a/net/ipv6/udp_impl.h
+++ b/net/ipv6/udp_impl.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _UDP6_IMPL_H
#define _UDP6_IMPL_H
#include <net/udp.h>
diff --git a/net/ipv6/xfrm6_input.c b/net/ipv6/xfrm6_input.c
index f95943a..fe04e23 100644
--- a/net/ipv6/xfrm6_input.c
+++ b/net/ipv6/xfrm6_input.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* xfrm6_input.c: based on net/ipv4/xfrm4_input.c
*
diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c
index 11d1314..17e95a0 100644
--- a/net/ipv6/xfrm6_policy.c
+++ b/net/ipv6/xfrm6_policy.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* xfrm6_policy.c: based on xfrm4_policy.c
*
diff --git a/net/ipv6/xfrm6_state.c b/net/ipv6/xfrm6_state.c
index 8a1f9c0..b15075a 100644
--- a/net/ipv6/xfrm6_state.c
+++ b/net/ipv6/xfrm6_state.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* xfrm6_state.c: based on xfrm4_state.c
*
diff --git a/net/ipx/ipx_proc.c b/net/ipx/ipx_proc.c
index 7d75e4c..38a3d51 100644
--- a/net/ipx/ipx_proc.c
+++ b/net/ipx/ipx_proc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* IPX proc routines
*
diff --git a/net/ipx/ipx_route.c b/net/ipx/ipx_route.c
index b5d9144..3cf93aa9 100644
--- a/net/ipx/ipx_route.c
+++ b/net/ipx/ipx_route.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Implements the IPX routing routines.
* Code moved from af_ipx.c.
diff --git a/net/ipx/pe2.c b/net/ipx/pe2.c
index 32dcd60..ba7d421 100644
--- a/net/ipx/pe2.c
+++ b/net/ipx/pe2.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/in.h>
#include <linux/mm.h>
#include <linux/module.h>
diff --git a/net/ipx/sysctl_net_ipx.c b/net/ipx/sysctl_net_ipx.c
index 0dafcc5..c3eef45 100644
--- a/net/ipx/sysctl_net_ipx.c
+++ b/net/ipx/sysctl_net_ipx.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/* -*- linux-c -*-
* sysctl_net_ipx.c: sysctl interface to net IPX subsystem.
*
diff --git a/net/kcm/kcmproc.c b/net/kcm/kcmproc.c
index c748e8a6..bd57233 100644
--- a/net/kcm/kcmproc.c
+++ b/net/kcm/kcmproc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/in.h>
#include <linux/inet.h>
#include <linux/list.h>
diff --git a/net/l2tp/Makefile b/net/l2tp/Makefile
index 2870f41..399a7e5 100644
--- a/net/l2tp/Makefile
+++ b/net/l2tp/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the L2TP.
#
diff --git a/net/llc/sysctl_net_llc.c b/net/llc/sysctl_net_llc.c
index 799bafc..8443a6d 100644
--- a/net/llc/sysctl_net_llc.c
+++ b/net/llc/sysctl_net_llc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* sysctl_net_llc.c: sysctl interface to LLC net subsystem.
*
diff --git a/net/mac80211/Makefile b/net/mac80211/Makefile
index 2829122..80bfe29 100644
--- a/net/mac80211/Makefile
+++ b/net/mac80211/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_MAC80211) += mac80211.o
# mac80211 objects
diff --git a/net/mac80211/debug.h b/net/mac80211/debug.h
index 1956b31..d90a8f9 100644
--- a/net/mac80211/debug.h
+++ b/net/mac80211/debug.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __MAC80211_DEBUG_H
#define __MAC80211_DEBUG_H
#include <net/cfg80211.h>
diff --git a/net/mac80211/debugfs.h b/net/mac80211/debugfs.h
index 60c35af..d2c4247 100644
--- a/net/mac80211/debugfs.h
+++ b/net/mac80211/debugfs.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __MAC80211_DEBUGFS_H
#define __MAC80211_DEBUGFS_H
diff --git a/net/mac80211/debugfs_key.h b/net/mac80211/debugfs_key.h
index 32adc77..1cd7b8b 100644
--- a/net/mac80211/debugfs_key.h
+++ b/net/mac80211/debugfs_key.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __MAC80211_DEBUGFS_KEY_H
#define __MAC80211_DEBUGFS_KEY_H
diff --git a/net/mac80211/debugfs_netdev.h b/net/mac80211/debugfs_netdev.h
index 9f5501a..a7e9d8d 100644
--- a/net/mac80211/debugfs_netdev.h
+++ b/net/mac80211/debugfs_netdev.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/* routines exported for debugfs handling */
#ifndef __IEEE80211_DEBUGFS_NETDEV_H
diff --git a/net/mac80211/debugfs_sta.h b/net/mac80211/debugfs_sta.h
index 8b608903..d2e7c27 100644
--- a/net/mac80211/debugfs_sta.h
+++ b/net/mac80211/debugfs_sta.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __MAC80211_DEBUGFS_STA_H
#define __MAC80211_DEBUGFS_STA_H
diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h
index 09f77e4..c7f93fd 100644
--- a/net/mac80211/driver-ops.h
+++ b/net/mac80211/driver-ops.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Portions of this file
* Copyright(c) 2016 Intel Deutschland GmbH
diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c
index a87d195..38c45e1 100644
--- a/net/mac80211/pm.c
+++ b/net/mac80211/pm.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <net/mac80211.h>
#include <net/rtnetlink.h>
diff --git a/net/mac80211/trace.c b/net/mac80211/trace.c
index edfe0c1..8378572 100644
--- a/net/mac80211/trace.c
+++ b/net/mac80211/trace.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/* bug in tracepoint.h, it should include this */
#include <linux/module.h>
diff --git a/net/mac80211/trace.h b/net/mac80211/trace.h
index 3d9ac17..591ad02 100644
--- a/net/mac80211/trace.h
+++ b/net/mac80211/trace.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Portions of this file
* Copyright(c) 2016 Intel Deutschland GmbH
diff --git a/net/mac80211/trace_msg.h b/net/mac80211/trace_msg.h
index 768f7c2..366b9e6 100644
--- a/net/mac80211/trace_msg.h
+++ b/net/mac80211/trace_msg.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifdef CONFIG_MAC80211_MESSAGE_TRACING
#if !defined(__MAC80211_MSG_DRIVER_TRACE) || defined(TRACE_HEADER_MULTI_READ)
diff --git a/net/mac802154/cfg.h b/net/mac802154/cfg.h
index e2718f9..3bb0896 100644
--- a/net/mac802154/cfg.h
+++ b/net/mac802154/cfg.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/* mac802154 configuration hooks for cfg802154
*/
diff --git a/net/mac802154/driver-ops.h b/net/mac802154/driver-ops.h
index fd9daf2..d23f0db 100644
--- a/net/mac802154/driver-ops.h
+++ b/net/mac802154/driver-ops.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __MAC802154_DRIVER_OPS
#define __MAC802154_DRIVER_OPS
diff --git a/net/mac802154/trace.c b/net/mac802154/trace.c
index 863e5e6..c36e3d5 100644
--- a/net/mac802154/trace.c
+++ b/net/mac802154/trace.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/module.h>
#ifndef __CHECKER__
diff --git a/net/mac802154/trace.h b/net/mac802154/trace.h
index 6f30e0c..2c8a43d 100644
--- a/net/mac802154/trace.h
+++ b/net/mac802154/trace.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/* Based on net/mac80211/trace.h */
#undef TRACE_SYSTEM
diff --git a/net/mpls/internal.h b/net/mpls/internal.h
index cf65aec..768a302 100644
--- a/net/mpls/internal.h
+++ b/net/mpls/internal.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef MPLS_INTERNAL_H
#define MPLS_INTERNAL_H
#include <net/mpls.h>
diff --git a/net/netfilter/Makefile b/net/netfilter/Makefile
index d3891c9..f78ed24 100644
--- a/net/netfilter/Makefile
+++ b/net/netfilter/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
netfilter-objs := core.o nf_log.o nf_queue.o nf_sockopt.o
nf_conntrack-y := nf_conntrack_core.o nf_conntrack_standalone.o nf_conntrack_expect.o nf_conntrack_helper.o nf_conntrack_proto.o nf_conntrack_l3proto_generic.o nf_conntrack_proto_generic.o nf_conntrack_proto_tcp.o nf_conntrack_proto_udp.o nf_conntrack_extend.o nf_conntrack_acct.o nf_conntrack_seqadj.o
diff --git a/net/netfilter/ipset/Makefile b/net/netfilter/ipset/Makefile
index 28ec148..a445a6b 100644
--- a/net/netfilter/ipset/Makefile
+++ b/net/netfilter/ipset/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the ipset modules
#
diff --git a/net/netfilter/ipvs/Makefile b/net/netfilter/ipvs/Makefile
index 67f3f43..c552993f 100644
--- a/net/netfilter/ipvs/Makefile
+++ b/net/netfilter/ipvs/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the IPVS modules on top of IPv4.
#
diff --git a/net/netfilter/ipvs/ip_vs_proto_sctp.c b/net/netfilter/ipvs/ip_vs_proto_sctp.c
index 57c8ee6..eff7569 100644
--- a/net/netfilter/ipvs/ip_vs_proto_sctp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/kernel.h>
#include <linux/ip.h>
#include <linux/sctp.h>
diff --git a/net/netfilter/ipvs/ip_vs_sync.c b/net/netfilter/ipvs/ip_vs_sync.c
index 0e5b64a..13f7408 100644
--- a/net/netfilter/ipvs/ip_vs_sync.c
+++ b/net/netfilter/ipvs/ip_vs_sync.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* IPVS An implementation of the IP virtual server support for the
* LINUX operating system. IPVS is now implemented as a module
diff --git a/net/netfilter/nf_internals.h b/net/netfilter/nf_internals.h
index 49f87ec..44284cd 100644
--- a/net/netfilter/nf_internals.h
+++ b/net/netfilter/nf_internals.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _NF_INTERNALS_H
#define _NF_INTERNALS_H
diff --git a/net/netfilter/nf_sockopt.c b/net/netfilter/nf_sockopt.c
index d2a9e6b..46cb378 100644
--- a/net/netfilter/nf_sockopt.c
+++ b/net/netfilter/nf_sockopt.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
diff --git a/net/netfilter/xt_repldata.h b/net/netfilter/xt_repldata.h
index 8fd3241..68ccbe5 100644
--- a/net/netfilter/xt_repldata.h
+++ b/net/netfilter/xt_repldata.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Today's hack: quantum tunneling in structs
*
diff --git a/net/netlabel/Makefile b/net/netlabel/Makefile
index d341ede..5a46381 100644
--- a/net/netlabel/Makefile
+++ b/net/netlabel/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the NetLabel subsystem.
#
diff --git a/net/netlink/af_netlink.h b/net/netlink/af_netlink.h
index 3490f24..0281885 100644
--- a/net/netlink/af_netlink.h
+++ b/net/netlink/af_netlink.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _AF_NETLINK_H
#define _AF_NETLINK_H
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c
index 10f8b4c..d444daf 100644
--- a/net/netlink/genetlink.c
+++ b/net/netlink/genetlink.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* NETLINK Generic Netlink Family
*
diff --git a/net/nfc/Makefile b/net/nfc/Makefile
index 2555ff8e..2ffc69b 100644
--- a/net/nfc/Makefile
+++ b/net/nfc/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the Linux NFC subsystem.
#
diff --git a/net/nfc/nci/Makefile b/net/nfc/nci/Makefile
index 0ca31d9..c3362c4 100644
--- a/net/nfc/nci/Makefile
+++ b/net/nfc/nci/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the Linux NFC NCI layer.
#
diff --git a/net/openvswitch/Makefile b/net/openvswitch/Makefile
index 60f8090..299f447 100644
--- a/net/openvswitch/Makefile
+++ b/net/openvswitch/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for Open vSwitch.
#
diff --git a/net/packet/internal.h b/net/packet/internal.h
index 94d1d40..562fbc1 100644
--- a/net/packet/internal.h
+++ b/net/packet/internal.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PACKET_INTERNAL_H__
#define __PACKET_INTERNAL_H__
diff --git a/net/phonet/Makefile b/net/phonet/Makefile
index e10b1b1..444f875 100644
--- a/net/phonet/Makefile
+++ b/net/phonet/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_PHONET) += phonet.o pn_pep.o
phonet-y := \
diff --git a/net/qrtr/qrtr.h b/net/qrtr/qrtr.h
index 2b84871..b81e695 100644
--- a/net/qrtr/qrtr.h
+++ b/net/qrtr/qrtr.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __QRTR_H_
#define __QRTR_H_
diff --git a/net/rds/Makefile b/net/rds/Makefile
index 56c7d27..b5d568b 100644
--- a/net/rds/Makefile
+++ b/net/rds/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_RDS) += rds.o
rds-y := af_rds.o bind.o cong.o connection.o info.o message.o \
recv.o send.o stats.o sysctl.o threads.o transport.o \
diff --git a/net/rds/ib.h b/net/rds/ib.h
index bf48224..86a8578 100644
--- a/net/rds/ib.h
+++ b/net/rds/ib.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _RDS_IB_H
#define _RDS_IB_H
diff --git a/net/rds/info.h b/net/rds/info.h
index b6c052c..a069b51 100644
--- a/net/rds/info.h
+++ b/net/rds/info.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _RDS_INFO_H
#define _RDS_INFO_H
diff --git a/net/rds/loop.h b/net/rds/loop.h
index f32b093..469fa4b 100644
--- a/net/rds/loop.h
+++ b/net/rds/loop.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _RDS_LOOP_H
#define _RDS_LOOP_H
diff --git a/net/rds/rdma_transport.h b/net/rds/rdma_transport.h
index ff2010e..d309c44 100644
--- a/net/rds/rdma_transport.h
+++ b/net/rds/rdma_transport.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _RDMA_TRANSPORT_H
#define _RDMA_TRANSPORT_H
diff --git a/net/rds/rds.h b/net/rds/rds.h
index 2e0315b..c349c71b 100644
--- a/net/rds/rds.h
+++ b/net/rds/rds.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _RDS_RDS_H
#define _RDS_RDS_H
diff --git a/net/rds/rds_single_path.h b/net/rds/rds_single_path.h
index e1241af..9521f6e 100644
--- a/net/rds/rds_single_path.h
+++ b/net/rds/rds_single_path.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _RDS_RDS_SINGLE_H
#define _RDS_RDS_SINGLE_H
diff --git a/net/rds/tcp.h b/net/rds/tcp.h
index f8800b7..1aafbf7 100644
--- a/net/rds/tcp.h
+++ b/net/rds/tcp.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _RDS_TCP_H
#define _RDS_TCP_H
diff --git a/net/rxrpc/Makefile b/net/rxrpc/Makefile
index 9c68d2f..6ffb7e9 100644
--- a/net/rxrpc/Makefile
+++ b/net/rxrpc/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for Linux kernel RxRPC
#
diff --git a/net/sched/Makefile b/net/sched/Makefile
index 7b915d2..9e43a47 100644
--- a/net/sched/Makefile
+++ b/net/sched/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the Linux Traffic Control Unit.
#
diff --git a/net/sctp/Makefile b/net/sctp/Makefile
index 70f1b57..8c434af 100644
--- a/net/sctp/Makefile
+++ b/net/sctp/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for SCTP support code.
#
diff --git a/net/smc/smc.h b/net/smc/smc.h
index 0ccd6fa..0bee9d1 100644
--- a/net/smc/smc.h
+++ b/net/smc/smc.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Shared Memory Communications over RDMA (SMC-R) and RoCE
*
diff --git a/net/smc/smc_cdc.c b/net/smc/smc_cdc.c
index a7294ed..535e72c 100644
--- a/net/smc/smc_cdc.c
+++ b/net/smc/smc_cdc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Shared Memory Communications over RDMA (SMC-R) and RoCE
*
diff --git a/net/smc/smc_cdc.h b/net/smc/smc_cdc.h
index 8e1d76f..bea61da 100644
--- a/net/smc/smc_cdc.h
+++ b/net/smc/smc_cdc.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Shared Memory Communications over RDMA (SMC-R) and RoCE
*
diff --git a/net/smc/smc_clc.c b/net/smc/smc_clc.c
index b7dd274..1800e16 100644
--- a/net/smc/smc_clc.c
+++ b/net/smc/smc_clc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Shared Memory Communications over RDMA (SMC-R) and RoCE
*
diff --git a/net/smc/smc_clc.h b/net/smc/smc_clc.h
index 1c55414..12a9af1 100644
--- a/net/smc/smc_clc.h
+++ b/net/smc/smc_clc.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Shared Memory Communications over RDMA (SMC-R) and RoCE
*
diff --git a/net/smc/smc_close.c b/net/smc/smc_close.c
index f0d16fb..2427a1f 100644
--- a/net/smc/smc_close.c
+++ b/net/smc/smc_close.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Shared Memory Communications over RDMA (SMC-R) and RoCE
*
diff --git a/net/smc/smc_close.h b/net/smc/smc_close.h
index 4a3d99a..ed82506 100644
--- a/net/smc/smc_close.h
+++ b/net/smc/smc_close.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Shared Memory Communications over RDMA (SMC-R) and RoCE
*
diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c
index 20b66e7..413e386 100644
--- a/net/smc/smc_core.c
+++ b/net/smc/smc_core.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Shared Memory Communications over RDMA (SMC-R) and RoCE
*
diff --git a/net/smc/smc_core.h b/net/smc/smc_core.h
index 19c44bf..fe691bf 100644
--- a/net/smc/smc_core.h
+++ b/net/smc/smc_core.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Shared Memory Communications over RDMA (SMC-R) and RoCE
*
diff --git a/net/smc/smc_ib.c b/net/smc/smc_ib.c
index 0b58522..9033b8a 100644
--- a/net/smc/smc_ib.c
+++ b/net/smc/smc_ib.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Shared Memory Communications over RDMA (SMC-R) and RoCE
*
diff --git a/net/smc/smc_ib.h b/net/smc/smc_ib.h
index 9b927a3..e90630d 100644
--- a/net/smc/smc_ib.h
+++ b/net/smc/smc_ib.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Shared Memory Communications over RDMA (SMC-R) and RoCE
*
diff --git a/net/smc/smc_llc.c b/net/smc/smc_llc.c
index c2f9165..92fe4cc 100644
--- a/net/smc/smc_llc.c
+++ b/net/smc/smc_llc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Shared Memory Communications over RDMA (SMC-R) and RoCE
*
diff --git a/net/smc/smc_llc.h b/net/smc/smc_llc.h
index b472f85..51b27ce 100644
--- a/net/smc/smc_llc.h
+++ b/net/smc/smc_llc.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Shared Memory Communications over RDMA (SMC-R) and RoCE
*
diff --git a/net/smc/smc_pnet.c b/net/smc/smc_pnet.c
index 31f8453..74568cd 100644
--- a/net/smc/smc_pnet.c
+++ b/net/smc/smc_pnet.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Shared Memory Communications over RDMA (SMC-R) and RoCE
*
diff --git a/net/smc/smc_pnet.h b/net/smc/smc_pnet.h
index c4f1bccd..5a29519 100644
--- a/net/smc/smc_pnet.h
+++ b/net/smc/smc_pnet.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Shared Memory Communications over RDMA (SMC-R) and RoCE
*
diff --git a/net/smc/smc_rx.c b/net/smc/smc_rx.c
index 3e631ae4..cbf5863 100644
--- a/net/smc/smc_rx.c
+++ b/net/smc/smc_rx.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Shared Memory Communications over RDMA (SMC-R) and RoCE
*
diff --git a/net/smc/smc_rx.h b/net/smc/smc_rx.h
index b5b80e1..3a32b59 100644
--- a/net/smc/smc_rx.h
+++ b/net/smc/smc_rx.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Shared Memory Communications over RDMA (SMC-R) and RoCE
*
diff --git a/net/smc/smc_tx.c b/net/smc/smc_tx.c
index 38665732..710ab3f 100644
--- a/net/smc/smc_tx.c
+++ b/net/smc/smc_tx.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Shared Memory Communications over RDMA (SMC-R) and RoCE
*
diff --git a/net/smc/smc_tx.h b/net/smc/smc_tx.h
index 1d6a0dc..7825596 100644
--- a/net/smc/smc_tx.h
+++ b/net/smc/smc_tx.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Shared Memory Communications over RDMA (SMC-R) and RoCE
*
diff --git a/net/smc/smc_wr.c b/net/smc/smc_wr.c
index 525d91e..de4537f 100644
--- a/net/smc/smc_wr.c
+++ b/net/smc/smc_wr.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Shared Memory Communications over RDMA (SMC-R) and RoCE
*
diff --git a/net/smc/smc_wr.h b/net/smc/smc_wr.h
index 45eb538..2acf12b 100644
--- a/net/smc/smc_wr.h
+++ b/net/smc/smc_wr.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Shared Memory Communications over RDMA (SMC-R) and RoCE
*
diff --git a/net/sunrpc/Makefile b/net/sunrpc/Makefile
index ea7ffa12..090658c 100644
--- a/net/sunrpc/Makefile
+++ b/net/sunrpc/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for Linux kernel SUN RPC
#
diff --git a/net/sunrpc/auth_gss/Makefile b/net/sunrpc/auth_gss/Makefile
index 14e9e53..c374268 100644
--- a/net/sunrpc/auth_gss/Makefile
+++ b/net/sunrpc/auth_gss/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for Linux kernel rpcsec_gss implementation
#
diff --git a/net/sunrpc/auth_null.c b/net/sunrpc/auth_null.c
index 5f3d527..75d72e1 100644
--- a/net/sunrpc/auth_null.c
+++ b/net/sunrpc/auth_null.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* linux/net/sunrpc/auth_null.c
*
diff --git a/net/sunrpc/auth_unix.c b/net/sunrpc/auth_unix.c
index 82337e1..dafd6b8 100644
--- a/net/sunrpc/auth_unix.c
+++ b/net/sunrpc/auth_unix.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* linux/net/sunrpc/auth_unix.c
*
diff --git a/net/sunrpc/debugfs.c b/net/sunrpc/debugfs.c
index c8fd0b6..e980d2a4 100644
--- a/net/sunrpc/debugfs.c
+++ b/net/sunrpc/debugfs.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/**
* debugfs interface for sunrpc
*
diff --git a/net/sunrpc/netns.h b/net/sunrpc/netns.h
index 394ce52..7ec10b9 100644
--- a/net/sunrpc/netns.h
+++ b/net/sunrpc/netns.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __SUNRPC_NETNS_H__
#define __SUNRPC_NETNS_H__
diff --git a/net/sunrpc/xprtmultipath.c b/net/sunrpc/xprtmultipath.c
index ae92a9e..e2d64c7 100644
--- a/net/sunrpc/xprtmultipath.c
+++ b/net/sunrpc/xprtmultipath.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Multipath support for RPC
*
diff --git a/net/sunrpc/xprtrdma/Makefile b/net/sunrpc/xprtrdma/Makefile
index b8213dd..8bf19e1 100644
--- a/net/sunrpc/xprtrdma/Makefile
+++ b/net/sunrpc/xprtrdma/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_SUNRPC_XPRT_RDMA) += rpcrdma.o
rpcrdma-y := transport.o rpc_rdma.o verbs.o \
diff --git a/net/sunrpc/xprtrdma/backchannel.c b/net/sunrpc/xprtrdma/backchannel.c
index d31d0ac..823a781 100644
--- a/net/sunrpc/xprtrdma/backchannel.c
+++ b/net/sunrpc/xprtrdma/backchannel.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2015 Oracle. All rights reserved.
*
diff --git a/net/sunrpc/xprtrdma/fmr_ops.c b/net/sunrpc/xprtrdma/fmr_ops.c
index 6c71513..fa759dd 100644
--- a/net/sunrpc/xprtrdma/fmr_ops.c
+++ b/net/sunrpc/xprtrdma/fmr_ops.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2015 Oracle. All rights reserved.
* Copyright (c) 2003-2007 Network Appliance, Inc. All rights reserved.
diff --git a/net/sunrpc/xprtrdma/frwr_ops.c b/net/sunrpc/xprtrdma/frwr_ops.c
index df062e0..35d7517 100644
--- a/net/sunrpc/xprtrdma/frwr_ops.c
+++ b/net/sunrpc/xprtrdma/frwr_ops.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2015 Oracle. All rights reserved.
* Copyright (c) 2003-2007 Network Appliance, Inc. All rights reserved.
diff --git a/net/sunrpc/xprtrdma/svc_rdma_backchannel.c b/net/sunrpc/xprtrdma/svc_rdma_backchannel.c
index ec37ad8..992594b 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_backchannel.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_backchannel.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2015 Oracle. All rights reserved.
*
diff --git a/net/sunrpc/xprtrdma/svc_rdma_rw.c b/net/sunrpc/xprtrdma/svc_rdma_rw.c
index 7dcda45..9bd0454 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_rw.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_rw.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2016 Oracle. All rights reserved.
*
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index c1841f2..4dad5da 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* linux/net/sunrpc/xprtsock.c
*
diff --git a/net/tipc/Makefile b/net/tipc/Makefile
index 31b9f9c..2bfaa9d 100644
--- a/net/tipc/Makefile
+++ b/net/tipc/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the Linux TIPC layer
#
diff --git a/net/unix/Makefile b/net/unix/Makefile
index b663c60..ffd0a275 100644
--- a/net/unix/Makefile
+++ b/net/unix/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the Linux unix domain socket layer.
#
diff --git a/net/vmw_vsock/Makefile b/net/vmw_vsock/Makefile
index e63d574..30a2633 100644
--- a/net/vmw_vsock/Makefile
+++ b/net/vmw_vsock/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_VSOCKETS) += vsock.o
obj-$(CONFIG_VMWARE_VMCI_VSOCKETS) += vmw_vsock_vmci_transport.o
obj-$(CONFIG_VIRTIO_VSOCKETS) += vmw_vsock_virtio_transport.o
diff --git a/net/wimax/Makefile b/net/wimax/Makefile
index 8f1510d..eb2db0d 100644
--- a/net/wimax/Makefile
+++ b/net/wimax/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_WIMAX) += wimax.o
diff --git a/net/wireless/Makefile b/net/wireless/Makefile
index d06e501..b7c0300e 100644
--- a/net/wireless/Makefile
+++ b/net/wireless/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_CFG80211) += cfg80211.o
obj-$(CONFIG_LIB80211) += lib80211.o
obj-$(CONFIG_LIB80211_CRYPT_WEP) += lib80211_crypt_wep.o
diff --git a/net/wireless/ap.c b/net/wireless/ap.c
index 25666d3..6368217 100644
--- a/net/wireless/ap.c
+++ b/net/wireless/ap.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/ieee80211.h>
#include <linux/export.h>
#include <net/cfg80211.h>
diff --git a/net/wireless/chan.c b/net/wireless/chan.c
index b8aa5a7..fad1b5b 100644
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* This file contains helper code to handle channel
* settings and keeping track of what is possible at
diff --git a/net/wireless/core.h b/net/wireless/core.h
index 6e809325..7058350 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Wireless configuration interface internals.
*
diff --git a/net/wireless/debugfs.h b/net/wireless/debugfs.h
index 74fdd38..a8a135d 100644
--- a/net/wireless/debugfs.h
+++ b/net/wireless/debugfs.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __CFG80211_DEBUGFS_H
#define __CFG80211_DEBUGFS_H
diff --git a/net/wireless/ethtool.c b/net/wireless/ethtool.c
index e9e9129..a9c0f36 100644
--- a/net/wireless/ethtool.c
+++ b/net/wireless/ethtool.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/utsname.h>
#include <net/cfg80211.h>
#include "core.h"
diff --git a/net/wireless/ibss.c b/net/wireless/ibss.c
index 10bf040..413d4f4 100644
--- a/net/wireless/ibss.c
+++ b/net/wireless/ibss.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Some IBSS support code for cfg80211.
*
diff --git a/net/wireless/mesh.c b/net/wireless/mesh.c
index 421a6b8..51aa556 100644
--- a/net/wireless/mesh.c
+++ b/net/wireless/mesh.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/ieee80211.h>
#include <linux/export.h>
#include <net/cfg80211.h>
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index d8df7a5..e7c64a8 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* cfg80211 MLME SAP interface
*
diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h
index b969333..fc415c8 100644
--- a/net/wireless/nl80211.h
+++ b/net/wireless/nl80211.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __NET_WIRELESS_NL80211_H
#define __NET_WIRELESS_NL80211_H
diff --git a/net/wireless/rdev-ops.h b/net/wireless/rdev-ops.h
index ce23d7d..0c06240 100644
--- a/net/wireless/rdev-ops.h
+++ b/net/wireless/rdev-ops.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __CFG80211_RDEV_OPS
#define __CFG80211_RDEV_OPS
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index 9f0901f..f6c5fe48 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* cfg80211 scan result handling
*
diff --git a/net/wireless/sme.c b/net/wireless/sme.c
index 0a49b88..37cea4d9 100644
--- a/net/wireless/sme.c
+++ b/net/wireless/sme.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* SME code for cfg80211
* both driver SME event handling and the SME implementation
diff --git a/net/wireless/sysfs.h b/net/wireless/sysfs.h
index b533ed7..7b454c2 100644
--- a/net/wireless/sysfs.h
+++ b/net/wireless/sysfs.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __WIRELESS_SYSFS_H
#define __WIRELESS_SYSFS_H
diff --git a/net/wireless/trace.h b/net/wireless/trace.h
index 0f8db41..f3353fe 100644
--- a/net/wireless/trace.h
+++ b/net/wireless/trace.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM cfg80211
diff --git a/net/wireless/util.c b/net/wireless/util.c
index bcb1284..c1238d5 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Wireless utility functions
*
diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
index 5d4a02c7..7ca04a7 100644
--- a/net/wireless/wext-compat.c
+++ b/net/wireless/wext-compat.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* cfg80211 - wext compat code
*
diff --git a/net/wireless/wext-sme.c b/net/wireless/wext-sme.c
index c434f19..c67d7a8 100644
--- a/net/wireless/wext-sme.c
+++ b/net/wireless/wext-sme.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* cfg80211 wext compat for managed mode.
*
diff --git a/net/x25/Makefile b/net/x25/Makefile
index a2c34ab..5dd544a 100644
--- a/net/x25/Makefile
+++ b/net/x25/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the Linux X.25 Packet layer.
#
diff --git a/net/x25/sysctl_net_x25.c b/net/x25/sysctl_net_x25.c
index ba078c8..e9802af 100644
--- a/net/x25/sysctl_net_x25.c
+++ b/net/x25/sysctl_net_x25.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/* -*- linux-c -*-
* sysctl_net_x25.c: sysctl interface to net X.25 subsystem.
*
diff --git a/net/xfrm/Makefile b/net/xfrm/Makefile
index 55b2ac3..0bd2465 100644
--- a/net/xfrm/Makefile
+++ b/net/xfrm/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the XFRM subsystem.
#
diff --git a/net/xfrm/xfrm_hash.c b/net/xfrm/xfrm_hash.c
index 1e98bc0..2ad33ce 100644
--- a/net/xfrm/xfrm_hash.c
+++ b/net/xfrm/xfrm_hash.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/* xfrm_hash.c: Common hash table code.
*
* Copyright (C) 2006 David S. Miller (davem@davemloft.net)
diff --git a/net/xfrm/xfrm_hash.h b/net/xfrm/xfrm_hash.h
index eaea9c4..61be810 100644
--- a/net/xfrm/xfrm_hash.h
+++ b/net/xfrm/xfrm_hash.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _XFRM_HASH_H
#define _XFRM_HASH_H
diff --git a/net/xfrm/xfrm_input.c b/net/xfrm/xfrm_input.c
index 8ac9d32f..82d20ee 100644
--- a/net/xfrm/xfrm_input.c
+++ b/net/xfrm/xfrm_input.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* xfrm_input.c
*
diff --git a/net/xfrm/xfrm_sysctl.c b/net/xfrm/xfrm_sysctl.c
index 35a7e79..0c6c5ef 100644
--- a/net/xfrm/xfrm_sysctl.c
+++ b/net/xfrm/xfrm_sysctl.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#include <linux/sysctl.h>
#include <linux/slab.h>
#include <net/net_namespace.h>
