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>
2017-11-01 08:07:57 -06:00
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/* SPDX-License-Identifier: GPL-2.0 */
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2015-03-30 08:45:21 -06:00
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#ifndef _MLX4_STATS_
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#define _MLX4_STATS_
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#ifdef MLX4_EN_PERF_STAT
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#define NUM_PERF_STATS NUM_PERF_COUNTERS
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#else
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#define NUM_PERF_STATS 0
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#endif
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#define NUM_PRIORITIES 9
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#define NUM_PRIORITY_STATS 2
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struct mlx4_en_pkt_stats {
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2015-03-30 08:45:26 -06:00
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unsigned long rx_multicast_packets;
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unsigned long rx_broadcast_packets;
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unsigned long rx_jabbers;
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unsigned long rx_in_range_length_error;
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unsigned long rx_out_range_length_error;
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unsigned long tx_multicast_packets;
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unsigned long tx_broadcast_packets;
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unsigned long rx_prio[NUM_PRIORITIES][NUM_PRIORITY_STATS];
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unsigned long tx_prio[NUM_PRIORITIES][NUM_PRIORITY_STATS];
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#define NUM_PKT_STATS 43
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2015-03-30 08:45:21 -06:00
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};
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2015-06-15 08:59:06 -06:00
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struct mlx4_en_counter_stats {
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unsigned long rx_packets;
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unsigned long rx_bytes;
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unsigned long tx_packets;
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unsigned long tx_bytes;
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#define NUM_PF_STATS 4
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};
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2015-03-30 08:45:21 -06:00
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struct mlx4_en_port_stats {
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unsigned long tso_packets;
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unsigned long xmit_more;
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unsigned long queue_stopped;
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unsigned long wake_queue;
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unsigned long tx_timeout;
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2017-03-08 09:17:14 -07:00
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unsigned long rx_alloc_pages;
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2015-03-30 08:45:21 -06:00
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unsigned long rx_chksum_good;
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unsigned long rx_chksum_none;
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unsigned long rx_chksum_complete;
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unsigned long tx_chksum_offload;
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#define NUM_PORT_STATS 10
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};
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struct mlx4_en_perf_stats {
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u32 tx_poll;
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u64 tx_pktsz_avg;
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u32 inflight_avg;
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u16 tx_coal_avg;
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u16 rx_coal_avg;
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u32 napi_quota;
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#define NUM_PERF_COUNTERS 6
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};
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2016-11-02 09:12:25 -06:00
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struct mlx4_en_xdp_stats {
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unsigned long rx_xdp_drop;
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unsigned long rx_xdp_tx;
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unsigned long rx_xdp_tx_full;
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#define NUM_XDP_STATS 3
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};
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2018-02-27 07:17:19 -07:00
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struct mlx4_en_phy_stats {
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unsigned long rx_packets_phy;
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unsigned long rx_bytes_phy;
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unsigned long tx_packets_phy;
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unsigned long tx_bytes_phy;
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#define NUM_PHY_STATS 4
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};
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2015-03-30 08:45:21 -06:00
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#define NUM_MAIN_STATS 21
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2015-03-30 08:45:25 -06:00
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#define MLX4_NUM_PRIORITIES 8
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struct mlx4_en_flow_stats_rx {
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u64 rx_pause;
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u64 rx_pause_duration;
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u64 rx_pause_transition;
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#define NUM_FLOW_STATS_RX 3
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#define NUM_FLOW_PRIORITY_STATS_RX (NUM_FLOW_STATS_RX * \
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MLX4_NUM_PRIORITIES)
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};
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2020-09-14 18:11:59 -06:00
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#define FLOW_PRIORITY_STATS_IDX_RX_FRAMES (NUM_MAIN_STATS + \
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NUM_PORT_STATS + \
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NUM_PF_STATS + \
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NUM_FLOW_PRIORITY_STATS_RX)
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2015-03-30 08:45:25 -06:00
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struct mlx4_en_flow_stats_tx {
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u64 tx_pause;
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u64 tx_pause_duration;
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u64 tx_pause_transition;
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#define NUM_FLOW_STATS_TX 3
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#define NUM_FLOW_PRIORITY_STATS_TX (NUM_FLOW_STATS_TX * \
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MLX4_NUM_PRIORITIES)
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};
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2020-09-14 18:11:59 -06:00
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#define FLOW_PRIORITY_STATS_IDX_TX_FRAMES (NUM_MAIN_STATS + \
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NUM_PORT_STATS + \
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NUM_PF_STATS + \
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NUM_FLOW_PRIORITY_STATS_RX + \
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NUM_FLOW_STATS_RX + \
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NUM_FLOW_PRIORITY_STATS_TX)
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2015-03-30 08:45:25 -06:00
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#define NUM_FLOW_STATS (NUM_FLOW_STATS_RX + NUM_FLOW_STATS_TX + \
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NUM_FLOW_PRIORITY_STATS_TX + \
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2015-06-23 08:14:12 -06:00
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NUM_FLOW_PRIORITY_STATS_RX)
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2015-03-30 08:45:25 -06:00
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struct mlx4_en_stat_out_flow_control_mbox {
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/* Total number of PAUSE frames received from the far-end port */
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__be64 rx_pause;
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/* Total number of microseconds that far-end port requested to pause
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* transmission of packets
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*/
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__be64 rx_pause_duration;
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/* Number of received transmission from XOFF state to XON state */
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__be64 rx_pause_transition;
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/* Total number of PAUSE frames sent from the far-end port */
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__be64 tx_pause;
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/* Total time in microseconds that transmission of packets has been
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* paused
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*/
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__be64 tx_pause_duration;
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/* Number of transmitter transitions from XOFF state to XON state */
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__be64 tx_pause_transition;
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/* Reserverd */
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__be64 reserved[2];
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};
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enum {
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MLX4_DUMP_ETH_STATS_FLOW_CONTROL = 1 << 12
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};
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2015-03-30 08:45:21 -06:00
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#define NUM_ALL_STATS (NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PKT_STATS + \
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2016-11-02 09:12:25 -06:00
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NUM_FLOW_STATS + NUM_PERF_STATS + NUM_PF_STATS + \
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2018-02-27 07:17:19 -07:00
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NUM_XDP_STATS + NUM_PHY_STATS)
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2015-03-30 08:45:23 -06:00
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#define MLX4_FIND_NETDEV_STAT(n) (offsetof(struct net_device_stats, n) / \
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sizeof(((struct net_device_stats *)0)->n))
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2015-03-30 08:45:21 -06:00
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#endif
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