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 14:07:57 +00:00
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/* SPDX-License-Identifier: GPL-2.0 */
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2009-05-15 23:39:29 +00:00
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/*
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* linux/can/dev.h
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*
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* Definitions for the CAN network device driver interface
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*
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* Copyright (C) 2006 Andrey Volkov <avolkov@varma-el.com>
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* Varma Electronics Oy
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*
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* Copyright (C) 2008 Wolfgang Grandegger <wg@grandegger.com>
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*
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*/
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2014-05-15 18:31:56 +00:00
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#ifndef _CAN_DEV_H
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#define _CAN_DEV_H
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2009-05-15 23:39:29 +00:00
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2010-04-13 00:03:25 +00:00
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#include <linux/can.h>
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2021-01-11 14:19:18 +00:00
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#include <linux/can/bittiming.h>
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2009-05-15 23:39:29 +00:00
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#include <linux/can/error.h>
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2021-01-11 14:19:19 +00:00
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#include <linux/can/length.h>
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2015-05-09 15:47:52 +00:00
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#include <linux/can/netlink.h>
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2019-12-07 18:34:18 +00:00
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#include <linux/can/skb.h>
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2022-07-27 10:16:34 +00:00
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#include <linux/ethtool.h>
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2015-05-09 15:47:52 +00:00
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#include <linux/netdevice.h>
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2009-05-15 23:39:29 +00:00
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/*
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* CAN mode
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*/
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enum can_mode {
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CAN_MODE_STOP = 0,
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CAN_MODE_START,
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CAN_MODE_SLEEP
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};
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2021-08-18 07:12:32 +00:00
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enum can_termination_gpio {
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CAN_TERMINATION_GPIO_DISABLED = 0,
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CAN_TERMINATION_GPIO_ENABLED,
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CAN_TERMINATION_GPIO_MAX,
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};
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2009-05-15 23:39:29 +00:00
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/*
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* CAN common private data
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*/
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struct can_priv {
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2016-09-07 13:51:12 +00:00
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struct net_device *dev;
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2009-05-15 23:39:29 +00:00
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struct can_device_stats can_stats;
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2014-02-28 15:36:23 +00:00
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const struct can_bittiming_const *bittiming_const,
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*data_bittiming_const;
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can: dev: reorder struct can_priv members for better packing
Save eight bytes of holes on x86-64 architectures by reordering struct
can_priv members.
Before:
$ pahole -C can_priv drivers/net/can/dev/dev.o
struct can_priv {
struct net_device * dev; /* 0 8 */
struct can_device_stats can_stats; /* 8 24 */
struct can_bittiming bittiming; /* 32 32 */
/* --- cacheline 1 boundary (64 bytes) --- */
struct can_bittiming data_bittiming; /* 64 32 */
const struct can_bittiming_const * bittiming_const; /* 96 8 */
const struct can_bittiming_const * data_bittiming_const; /* 104 8 */
struct can_tdc tdc; /* 112 12 */
/* XXX 4 bytes hole, try to pack */
/* --- cacheline 2 boundary (128 bytes) --- */
const struct can_tdc_const * tdc_const; /* 128 8 */
const u16 * termination_const; /* 136 8 */
unsigned int termination_const_cnt; /* 144 4 */
u16 termination; /* 148 2 */
/* XXX 2 bytes hole, try to pack */
const u32 * bitrate_const; /* 152 8 */
unsigned int bitrate_const_cnt; /* 160 4 */
/* XXX 4 bytes hole, try to pack */
const u32 * data_bitrate_const; /* 168 8 */
unsigned int data_bitrate_const_cnt; /* 176 4 */
u32 bitrate_max; /* 180 4 */
struct can_clock clock; /* 184 4 */
enum can_state state; /* 188 4 */
/* --- cacheline 3 boundary (192 bytes) --- */
u32 ctrlmode; /* 192 4 */
u32 ctrlmode_supported; /* 196 4 */
u32 ctrlmode_static; /* 200 4 */
int restart_ms; /* 204 4 */
struct delayed_work restart_work; /* 208 168 */
/* XXX last struct has 4 bytes of padding */
/* --- cacheline 5 boundary (320 bytes) was 56 bytes ago --- */
int (*do_set_bittiming)(struct net_device *); /* 376 8 */
/* --- cacheline 6 boundary (384 bytes) --- */
int (*do_set_data_bittiming)(struct net_device *); /* 384 8 */
int (*do_set_mode)(struct net_device *, enum can_mode); /* 392 8 */
int (*do_set_termination)(struct net_device *, u16); /* 400 8 */
int (*do_get_state)(const struct net_device *, enum can_state *); /* 408 8 */
int (*do_get_berr_counter)(const struct net_device *, struct can_berr_counter *); /* 416 8 */
unsigned int echo_skb_max; /* 424 4 */
/* XXX 4 bytes hole, try to pack */
struct sk_buff * * echo_skb; /* 432 8 */
/* size: 440, cachelines: 7, members: 31 */
/* sum members: 426, holes: 4, sum holes: 14 */
/* paddings: 1, sum paddings: 4 */
/* last cacheline: 56 bytes */
};
After:
$ pahole -C can_priv drivers/net/can/dev/dev.o
struct can_priv {
struct net_device * dev; /* 0 8 */
struct can_device_stats can_stats; /* 8 24 */
const struct can_bittiming_const * bittiming_const; /* 32 8 */
const struct can_bittiming_const * data_bittiming_const; /* 40 8 */
struct can_bittiming bittiming; /* 48 32 */
/* --- cacheline 1 boundary (64 bytes) was 16 bytes ago --- */
struct can_bittiming data_bittiming; /* 80 32 */
const struct can_tdc_const * tdc_const; /* 112 8 */
struct can_tdc tdc; /* 120 12 */
/* --- cacheline 2 boundary (128 bytes) was 4 bytes ago --- */
unsigned int bitrate_const_cnt; /* 132 4 */
const u32 * bitrate_const; /* 136 8 */
const u32 * data_bitrate_const; /* 144 8 */
unsigned int data_bitrate_const_cnt; /* 152 4 */
u32 bitrate_max; /* 156 4 */
struct can_clock clock; /* 160 4 */
unsigned int termination_const_cnt; /* 164 4 */
const u16 * termination_const; /* 168 8 */
u16 termination; /* 176 2 */
/* XXX 2 bytes hole, try to pack */
enum can_state state; /* 180 4 */
u32 ctrlmode; /* 184 4 */
u32 ctrlmode_supported; /* 188 4 */
/* --- cacheline 3 boundary (192 bytes) --- */
u32 ctrlmode_static; /* 192 4 */
int restart_ms; /* 196 4 */
struct delayed_work restart_work; /* 200 168 */
/* XXX last struct has 4 bytes of padding */
/* --- cacheline 5 boundary (320 bytes) was 48 bytes ago --- */
int (*do_set_bittiming)(struct net_device *); /* 368 8 */
int (*do_set_data_bittiming)(struct net_device *); /* 376 8 */
/* --- cacheline 6 boundary (384 bytes) --- */
int (*do_set_mode)(struct net_device *, enum can_mode); /* 384 8 */
int (*do_set_termination)(struct net_device *, u16); /* 392 8 */
int (*do_get_state)(const struct net_device *, enum can_state *); /* 400 8 */
int (*do_get_berr_counter)(const struct net_device *, struct can_berr_counter *); /* 408 8 */
unsigned int echo_skb_max; /* 416 4 */
/* XXX 4 bytes hole, try to pack */
struct sk_buff * * echo_skb; /* 424 8 */
/* size: 432, cachelines: 7, members: 31 */
/* sum members: 426, holes: 2, sum holes: 6 */
/* paddings: 1, sum paddings: 4 */
/* last cacheline: 48 bytes */
};
Link: https://lore.kernel.org/r/20210224002008.4158-3-mailhol.vincent@wanadoo.fr
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2021-02-24 00:20:05 +00:00
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struct can_bittiming bittiming, data_bittiming;
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2021-02-24 00:20:04 +00:00
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const struct can_tdc_const *tdc_const;
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can: dev: reorder struct can_priv members for better packing
Save eight bytes of holes on x86-64 architectures by reordering struct
can_priv members.
Before:
$ pahole -C can_priv drivers/net/can/dev/dev.o
struct can_priv {
struct net_device * dev; /* 0 8 */
struct can_device_stats can_stats; /* 8 24 */
struct can_bittiming bittiming; /* 32 32 */
/* --- cacheline 1 boundary (64 bytes) --- */
struct can_bittiming data_bittiming; /* 64 32 */
const struct can_bittiming_const * bittiming_const; /* 96 8 */
const struct can_bittiming_const * data_bittiming_const; /* 104 8 */
struct can_tdc tdc; /* 112 12 */
/* XXX 4 bytes hole, try to pack */
/* --- cacheline 2 boundary (128 bytes) --- */
const struct can_tdc_const * tdc_const; /* 128 8 */
const u16 * termination_const; /* 136 8 */
unsigned int termination_const_cnt; /* 144 4 */
u16 termination; /* 148 2 */
/* XXX 2 bytes hole, try to pack */
const u32 * bitrate_const; /* 152 8 */
unsigned int bitrate_const_cnt; /* 160 4 */
/* XXX 4 bytes hole, try to pack */
const u32 * data_bitrate_const; /* 168 8 */
unsigned int data_bitrate_const_cnt; /* 176 4 */
u32 bitrate_max; /* 180 4 */
struct can_clock clock; /* 184 4 */
enum can_state state; /* 188 4 */
/* --- cacheline 3 boundary (192 bytes) --- */
u32 ctrlmode; /* 192 4 */
u32 ctrlmode_supported; /* 196 4 */
u32 ctrlmode_static; /* 200 4 */
int restart_ms; /* 204 4 */
struct delayed_work restart_work; /* 208 168 */
/* XXX last struct has 4 bytes of padding */
/* --- cacheline 5 boundary (320 bytes) was 56 bytes ago --- */
int (*do_set_bittiming)(struct net_device *); /* 376 8 */
/* --- cacheline 6 boundary (384 bytes) --- */
int (*do_set_data_bittiming)(struct net_device *); /* 384 8 */
int (*do_set_mode)(struct net_device *, enum can_mode); /* 392 8 */
int (*do_set_termination)(struct net_device *, u16); /* 400 8 */
int (*do_get_state)(const struct net_device *, enum can_state *); /* 408 8 */
int (*do_get_berr_counter)(const struct net_device *, struct can_berr_counter *); /* 416 8 */
unsigned int echo_skb_max; /* 424 4 */
/* XXX 4 bytes hole, try to pack */
struct sk_buff * * echo_skb; /* 432 8 */
/* size: 440, cachelines: 7, members: 31 */
/* sum members: 426, holes: 4, sum holes: 14 */
/* paddings: 1, sum paddings: 4 */
/* last cacheline: 56 bytes */
};
After:
$ pahole -C can_priv drivers/net/can/dev/dev.o
struct can_priv {
struct net_device * dev; /* 0 8 */
struct can_device_stats can_stats; /* 8 24 */
const struct can_bittiming_const * bittiming_const; /* 32 8 */
const struct can_bittiming_const * data_bittiming_const; /* 40 8 */
struct can_bittiming bittiming; /* 48 32 */
/* --- cacheline 1 boundary (64 bytes) was 16 bytes ago --- */
struct can_bittiming data_bittiming; /* 80 32 */
const struct can_tdc_const * tdc_const; /* 112 8 */
struct can_tdc tdc; /* 120 12 */
/* --- cacheline 2 boundary (128 bytes) was 4 bytes ago --- */
unsigned int bitrate_const_cnt; /* 132 4 */
const u32 * bitrate_const; /* 136 8 */
const u32 * data_bitrate_const; /* 144 8 */
unsigned int data_bitrate_const_cnt; /* 152 4 */
u32 bitrate_max; /* 156 4 */
struct can_clock clock; /* 160 4 */
unsigned int termination_const_cnt; /* 164 4 */
const u16 * termination_const; /* 168 8 */
u16 termination; /* 176 2 */
/* XXX 2 bytes hole, try to pack */
enum can_state state; /* 180 4 */
u32 ctrlmode; /* 184 4 */
u32 ctrlmode_supported; /* 188 4 */
/* --- cacheline 3 boundary (192 bytes) --- */
u32 ctrlmode_static; /* 192 4 */
int restart_ms; /* 196 4 */
struct delayed_work restart_work; /* 200 168 */
/* XXX last struct has 4 bytes of padding */
/* --- cacheline 5 boundary (320 bytes) was 48 bytes ago --- */
int (*do_set_bittiming)(struct net_device *); /* 368 8 */
int (*do_set_data_bittiming)(struct net_device *); /* 376 8 */
/* --- cacheline 6 boundary (384 bytes) --- */
int (*do_set_mode)(struct net_device *, enum can_mode); /* 384 8 */
int (*do_set_termination)(struct net_device *, u16); /* 392 8 */
int (*do_get_state)(const struct net_device *, enum can_state *); /* 400 8 */
int (*do_get_berr_counter)(const struct net_device *, struct can_berr_counter *); /* 408 8 */
unsigned int echo_skb_max; /* 416 4 */
/* XXX 4 bytes hole, try to pack */
struct sk_buff * * echo_skb; /* 424 8 */
/* size: 432, cachelines: 7, members: 31 */
/* sum members: 426, holes: 2, sum holes: 6 */
/* paddings: 1, sum paddings: 4 */
/* last cacheline: 48 bytes */
};
Link: https://lore.kernel.org/r/20210224002008.4158-3-mailhol.vincent@wanadoo.fr
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2021-02-24 00:20:05 +00:00
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struct can_tdc tdc;
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2021-02-24 00:20:04 +00:00
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2017-01-11 16:05:35 +00:00
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unsigned int bitrate_const_cnt;
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can: dev: reorder struct can_priv members for better packing
Save eight bytes of holes on x86-64 architectures by reordering struct
can_priv members.
Before:
$ pahole -C can_priv drivers/net/can/dev/dev.o
struct can_priv {
struct net_device * dev; /* 0 8 */
struct can_device_stats can_stats; /* 8 24 */
struct can_bittiming bittiming; /* 32 32 */
/* --- cacheline 1 boundary (64 bytes) --- */
struct can_bittiming data_bittiming; /* 64 32 */
const struct can_bittiming_const * bittiming_const; /* 96 8 */
const struct can_bittiming_const * data_bittiming_const; /* 104 8 */
struct can_tdc tdc; /* 112 12 */
/* XXX 4 bytes hole, try to pack */
/* --- cacheline 2 boundary (128 bytes) --- */
const struct can_tdc_const * tdc_const; /* 128 8 */
const u16 * termination_const; /* 136 8 */
unsigned int termination_const_cnt; /* 144 4 */
u16 termination; /* 148 2 */
/* XXX 2 bytes hole, try to pack */
const u32 * bitrate_const; /* 152 8 */
unsigned int bitrate_const_cnt; /* 160 4 */
/* XXX 4 bytes hole, try to pack */
const u32 * data_bitrate_const; /* 168 8 */
unsigned int data_bitrate_const_cnt; /* 176 4 */
u32 bitrate_max; /* 180 4 */
struct can_clock clock; /* 184 4 */
enum can_state state; /* 188 4 */
/* --- cacheline 3 boundary (192 bytes) --- */
u32 ctrlmode; /* 192 4 */
u32 ctrlmode_supported; /* 196 4 */
u32 ctrlmode_static; /* 200 4 */
int restart_ms; /* 204 4 */
struct delayed_work restart_work; /* 208 168 */
/* XXX last struct has 4 bytes of padding */
/* --- cacheline 5 boundary (320 bytes) was 56 bytes ago --- */
int (*do_set_bittiming)(struct net_device *); /* 376 8 */
/* --- cacheline 6 boundary (384 bytes) --- */
int (*do_set_data_bittiming)(struct net_device *); /* 384 8 */
int (*do_set_mode)(struct net_device *, enum can_mode); /* 392 8 */
int (*do_set_termination)(struct net_device *, u16); /* 400 8 */
int (*do_get_state)(const struct net_device *, enum can_state *); /* 408 8 */
int (*do_get_berr_counter)(const struct net_device *, struct can_berr_counter *); /* 416 8 */
unsigned int echo_skb_max; /* 424 4 */
/* XXX 4 bytes hole, try to pack */
struct sk_buff * * echo_skb; /* 432 8 */
/* size: 440, cachelines: 7, members: 31 */
/* sum members: 426, holes: 4, sum holes: 14 */
/* paddings: 1, sum paddings: 4 */
/* last cacheline: 56 bytes */
};
After:
$ pahole -C can_priv drivers/net/can/dev/dev.o
struct can_priv {
struct net_device * dev; /* 0 8 */
struct can_device_stats can_stats; /* 8 24 */
const struct can_bittiming_const * bittiming_const; /* 32 8 */
const struct can_bittiming_const * data_bittiming_const; /* 40 8 */
struct can_bittiming bittiming; /* 48 32 */
/* --- cacheline 1 boundary (64 bytes) was 16 bytes ago --- */
struct can_bittiming data_bittiming; /* 80 32 */
const struct can_tdc_const * tdc_const; /* 112 8 */
struct can_tdc tdc; /* 120 12 */
/* --- cacheline 2 boundary (128 bytes) was 4 bytes ago --- */
unsigned int bitrate_const_cnt; /* 132 4 */
const u32 * bitrate_const; /* 136 8 */
const u32 * data_bitrate_const; /* 144 8 */
unsigned int data_bitrate_const_cnt; /* 152 4 */
u32 bitrate_max; /* 156 4 */
struct can_clock clock; /* 160 4 */
unsigned int termination_const_cnt; /* 164 4 */
const u16 * termination_const; /* 168 8 */
u16 termination; /* 176 2 */
/* XXX 2 bytes hole, try to pack */
enum can_state state; /* 180 4 */
u32 ctrlmode; /* 184 4 */
u32 ctrlmode_supported; /* 188 4 */
/* --- cacheline 3 boundary (192 bytes) --- */
u32 ctrlmode_static; /* 192 4 */
int restart_ms; /* 196 4 */
struct delayed_work restart_work; /* 200 168 */
/* XXX last struct has 4 bytes of padding */
/* --- cacheline 5 boundary (320 bytes) was 48 bytes ago --- */
int (*do_set_bittiming)(struct net_device *); /* 368 8 */
int (*do_set_data_bittiming)(struct net_device *); /* 376 8 */
/* --- cacheline 6 boundary (384 bytes) --- */
int (*do_set_mode)(struct net_device *, enum can_mode); /* 384 8 */
int (*do_set_termination)(struct net_device *, u16); /* 392 8 */
int (*do_get_state)(const struct net_device *, enum can_state *); /* 400 8 */
int (*do_get_berr_counter)(const struct net_device *, struct can_berr_counter *); /* 408 8 */
unsigned int echo_skb_max; /* 416 4 */
/* XXX 4 bytes hole, try to pack */
struct sk_buff * * echo_skb; /* 424 8 */
/* size: 432, cachelines: 7, members: 31 */
/* sum members: 426, holes: 2, sum holes: 6 */
/* paddings: 1, sum paddings: 4 */
/* last cacheline: 48 bytes */
};
Link: https://lore.kernel.org/r/20210224002008.4158-3-mailhol.vincent@wanadoo.fr
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2021-02-24 00:20:05 +00:00
|
|
|
const u32 *bitrate_const;
|
2017-01-11 16:05:35 +00:00
|
|
|
const u32 *data_bitrate_const;
|
|
|
|
|
unsigned int data_bitrate_const_cnt;
|
2018-01-10 10:55:18 +00:00
|
|
|
u32 bitrate_max;
|
2009-05-15 23:39:29 +00:00
|
|
|
struct can_clock clock;
|
|
|
|
|
|
can: dev: reorder struct can_priv members for better packing
Save eight bytes of holes on x86-64 architectures by reordering struct
can_priv members.
Before:
$ pahole -C can_priv drivers/net/can/dev/dev.o
struct can_priv {
struct net_device * dev; /* 0 8 */
struct can_device_stats can_stats; /* 8 24 */
struct can_bittiming bittiming; /* 32 32 */
/* --- cacheline 1 boundary (64 bytes) --- */
struct can_bittiming data_bittiming; /* 64 32 */
const struct can_bittiming_const * bittiming_const; /* 96 8 */
const struct can_bittiming_const * data_bittiming_const; /* 104 8 */
struct can_tdc tdc; /* 112 12 */
/* XXX 4 bytes hole, try to pack */
/* --- cacheline 2 boundary (128 bytes) --- */
const struct can_tdc_const * tdc_const; /* 128 8 */
const u16 * termination_const; /* 136 8 */
unsigned int termination_const_cnt; /* 144 4 */
u16 termination; /* 148 2 */
/* XXX 2 bytes hole, try to pack */
const u32 * bitrate_const; /* 152 8 */
unsigned int bitrate_const_cnt; /* 160 4 */
/* XXX 4 bytes hole, try to pack */
const u32 * data_bitrate_const; /* 168 8 */
unsigned int data_bitrate_const_cnt; /* 176 4 */
u32 bitrate_max; /* 180 4 */
struct can_clock clock; /* 184 4 */
enum can_state state; /* 188 4 */
/* --- cacheline 3 boundary (192 bytes) --- */
u32 ctrlmode; /* 192 4 */
u32 ctrlmode_supported; /* 196 4 */
u32 ctrlmode_static; /* 200 4 */
int restart_ms; /* 204 4 */
struct delayed_work restart_work; /* 208 168 */
/* XXX last struct has 4 bytes of padding */
/* --- cacheline 5 boundary (320 bytes) was 56 bytes ago --- */
int (*do_set_bittiming)(struct net_device *); /* 376 8 */
/* --- cacheline 6 boundary (384 bytes) --- */
int (*do_set_data_bittiming)(struct net_device *); /* 384 8 */
int (*do_set_mode)(struct net_device *, enum can_mode); /* 392 8 */
int (*do_set_termination)(struct net_device *, u16); /* 400 8 */
int (*do_get_state)(const struct net_device *, enum can_state *); /* 408 8 */
int (*do_get_berr_counter)(const struct net_device *, struct can_berr_counter *); /* 416 8 */
unsigned int echo_skb_max; /* 424 4 */
/* XXX 4 bytes hole, try to pack */
struct sk_buff * * echo_skb; /* 432 8 */
/* size: 440, cachelines: 7, members: 31 */
/* sum members: 426, holes: 4, sum holes: 14 */
/* paddings: 1, sum paddings: 4 */
/* last cacheline: 56 bytes */
};
After:
$ pahole -C can_priv drivers/net/can/dev/dev.o
struct can_priv {
struct net_device * dev; /* 0 8 */
struct can_device_stats can_stats; /* 8 24 */
const struct can_bittiming_const * bittiming_const; /* 32 8 */
const struct can_bittiming_const * data_bittiming_const; /* 40 8 */
struct can_bittiming bittiming; /* 48 32 */
/* --- cacheline 1 boundary (64 bytes) was 16 bytes ago --- */
struct can_bittiming data_bittiming; /* 80 32 */
const struct can_tdc_const * tdc_const; /* 112 8 */
struct can_tdc tdc; /* 120 12 */
/* --- cacheline 2 boundary (128 bytes) was 4 bytes ago --- */
unsigned int bitrate_const_cnt; /* 132 4 */
const u32 * bitrate_const; /* 136 8 */
const u32 * data_bitrate_const; /* 144 8 */
unsigned int data_bitrate_const_cnt; /* 152 4 */
u32 bitrate_max; /* 156 4 */
struct can_clock clock; /* 160 4 */
unsigned int termination_const_cnt; /* 164 4 */
const u16 * termination_const; /* 168 8 */
u16 termination; /* 176 2 */
/* XXX 2 bytes hole, try to pack */
enum can_state state; /* 180 4 */
u32 ctrlmode; /* 184 4 */
u32 ctrlmode_supported; /* 188 4 */
/* --- cacheline 3 boundary (192 bytes) --- */
u32 ctrlmode_static; /* 192 4 */
int restart_ms; /* 196 4 */
struct delayed_work restart_work; /* 200 168 */
/* XXX last struct has 4 bytes of padding */
/* --- cacheline 5 boundary (320 bytes) was 48 bytes ago --- */
int (*do_set_bittiming)(struct net_device *); /* 368 8 */
int (*do_set_data_bittiming)(struct net_device *); /* 376 8 */
/* --- cacheline 6 boundary (384 bytes) --- */
int (*do_set_mode)(struct net_device *, enum can_mode); /* 384 8 */
int (*do_set_termination)(struct net_device *, u16); /* 392 8 */
int (*do_get_state)(const struct net_device *, enum can_state *); /* 400 8 */
int (*do_get_berr_counter)(const struct net_device *, struct can_berr_counter *); /* 408 8 */
unsigned int echo_skb_max; /* 416 4 */
/* XXX 4 bytes hole, try to pack */
struct sk_buff * * echo_skb; /* 424 8 */
/* size: 432, cachelines: 7, members: 31 */
/* sum members: 426, holes: 2, sum holes: 6 */
/* paddings: 1, sum paddings: 4 */
/* last cacheline: 48 bytes */
};
Link: https://lore.kernel.org/r/20210224002008.4158-3-mailhol.vincent@wanadoo.fr
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2021-02-24 00:20:05 +00:00
|
|
|
unsigned int termination_const_cnt;
|
|
|
|
|
const u16 *termination_const;
|
|
|
|
|
u16 termination;
|
2021-08-18 07:12:32 +00:00
|
|
|
struct gpio_desc *termination_gpio;
|
|
|
|
|
u16 termination_gpio_ohms[CAN_TERMINATION_GPIO_MAX];
|
can: dev: reorder struct can_priv members for better packing
Save eight bytes of holes on x86-64 architectures by reordering struct
can_priv members.
Before:
$ pahole -C can_priv drivers/net/can/dev/dev.o
struct can_priv {
struct net_device * dev; /* 0 8 */
struct can_device_stats can_stats; /* 8 24 */
struct can_bittiming bittiming; /* 32 32 */
/* --- cacheline 1 boundary (64 bytes) --- */
struct can_bittiming data_bittiming; /* 64 32 */
const struct can_bittiming_const * bittiming_const; /* 96 8 */
const struct can_bittiming_const * data_bittiming_const; /* 104 8 */
struct can_tdc tdc; /* 112 12 */
/* XXX 4 bytes hole, try to pack */
/* --- cacheline 2 boundary (128 bytes) --- */
const struct can_tdc_const * tdc_const; /* 128 8 */
const u16 * termination_const; /* 136 8 */
unsigned int termination_const_cnt; /* 144 4 */
u16 termination; /* 148 2 */
/* XXX 2 bytes hole, try to pack */
const u32 * bitrate_const; /* 152 8 */
unsigned int bitrate_const_cnt; /* 160 4 */
/* XXX 4 bytes hole, try to pack */
const u32 * data_bitrate_const; /* 168 8 */
unsigned int data_bitrate_const_cnt; /* 176 4 */
u32 bitrate_max; /* 180 4 */
struct can_clock clock; /* 184 4 */
enum can_state state; /* 188 4 */
/* --- cacheline 3 boundary (192 bytes) --- */
u32 ctrlmode; /* 192 4 */
u32 ctrlmode_supported; /* 196 4 */
u32 ctrlmode_static; /* 200 4 */
int restart_ms; /* 204 4 */
struct delayed_work restart_work; /* 208 168 */
/* XXX last struct has 4 bytes of padding */
/* --- cacheline 5 boundary (320 bytes) was 56 bytes ago --- */
int (*do_set_bittiming)(struct net_device *); /* 376 8 */
/* --- cacheline 6 boundary (384 bytes) --- */
int (*do_set_data_bittiming)(struct net_device *); /* 384 8 */
int (*do_set_mode)(struct net_device *, enum can_mode); /* 392 8 */
int (*do_set_termination)(struct net_device *, u16); /* 400 8 */
int (*do_get_state)(const struct net_device *, enum can_state *); /* 408 8 */
int (*do_get_berr_counter)(const struct net_device *, struct can_berr_counter *); /* 416 8 */
unsigned int echo_skb_max; /* 424 4 */
/* XXX 4 bytes hole, try to pack */
struct sk_buff * * echo_skb; /* 432 8 */
/* size: 440, cachelines: 7, members: 31 */
/* sum members: 426, holes: 4, sum holes: 14 */
/* paddings: 1, sum paddings: 4 */
/* last cacheline: 56 bytes */
};
After:
$ pahole -C can_priv drivers/net/can/dev/dev.o
struct can_priv {
struct net_device * dev; /* 0 8 */
struct can_device_stats can_stats; /* 8 24 */
const struct can_bittiming_const * bittiming_const; /* 32 8 */
const struct can_bittiming_const * data_bittiming_const; /* 40 8 */
struct can_bittiming bittiming; /* 48 32 */
/* --- cacheline 1 boundary (64 bytes) was 16 bytes ago --- */
struct can_bittiming data_bittiming; /* 80 32 */
const struct can_tdc_const * tdc_const; /* 112 8 */
struct can_tdc tdc; /* 120 12 */
/* --- cacheline 2 boundary (128 bytes) was 4 bytes ago --- */
unsigned int bitrate_const_cnt; /* 132 4 */
const u32 * bitrate_const; /* 136 8 */
const u32 * data_bitrate_const; /* 144 8 */
unsigned int data_bitrate_const_cnt; /* 152 4 */
u32 bitrate_max; /* 156 4 */
struct can_clock clock; /* 160 4 */
unsigned int termination_const_cnt; /* 164 4 */
const u16 * termination_const; /* 168 8 */
u16 termination; /* 176 2 */
/* XXX 2 bytes hole, try to pack */
enum can_state state; /* 180 4 */
u32 ctrlmode; /* 184 4 */
u32 ctrlmode_supported; /* 188 4 */
/* --- cacheline 3 boundary (192 bytes) --- */
u32 ctrlmode_static; /* 192 4 */
int restart_ms; /* 196 4 */
struct delayed_work restart_work; /* 200 168 */
/* XXX last struct has 4 bytes of padding */
/* --- cacheline 5 boundary (320 bytes) was 48 bytes ago --- */
int (*do_set_bittiming)(struct net_device *); /* 368 8 */
int (*do_set_data_bittiming)(struct net_device *); /* 376 8 */
/* --- cacheline 6 boundary (384 bytes) --- */
int (*do_set_mode)(struct net_device *, enum can_mode); /* 384 8 */
int (*do_set_termination)(struct net_device *, u16); /* 392 8 */
int (*do_get_state)(const struct net_device *, enum can_state *); /* 400 8 */
int (*do_get_berr_counter)(const struct net_device *, struct can_berr_counter *); /* 408 8 */
unsigned int echo_skb_max; /* 416 4 */
/* XXX 4 bytes hole, try to pack */
struct sk_buff * * echo_skb; /* 424 8 */
/* size: 432, cachelines: 7, members: 31 */
/* sum members: 426, holes: 2, sum holes: 6 */
/* paddings: 1, sum paddings: 4 */
/* last cacheline: 48 bytes */
};
Link: https://lore.kernel.org/r/20210224002008.4158-3-mailhol.vincent@wanadoo.fr
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2021-02-24 00:20:05 +00:00
|
|
|
|
can: dev: reorder struct can_priv members for better packing
Save eight bytes of holes on x86-64 architectures by reordering the
members of struct can_priv.
Before:
| $ pahole -C can_priv drivers/net/can/dev/dev.o
| struct can_priv {
| struct net_device * dev; /* 0 8 */
| struct can_device_stats can_stats; /* 8 24 */
| const struct can_bittiming_const * bittiming_const; /* 32 8 */
| const struct can_bittiming_const * data_bittiming_const; /* 40 8 */
| struct can_bittiming bittiming; /* 48 32 */
| /* --- cacheline 1 boundary (64 bytes) was 16 bytes ago --- */
| struct can_bittiming data_bittiming; /* 80 32 */
| const struct can_tdc_const * tdc_const; /* 112 8 */
| struct can_tdc tdc; /* 120 12 */
| /* --- cacheline 2 boundary (128 bytes) was 4 bytes ago --- */
| unsigned int bitrate_const_cnt; /* 132 4 */
| const u32 * bitrate_const; /* 136 8 */
| const u32 * data_bitrate_const; /* 144 8 */
| unsigned int data_bitrate_const_cnt; /* 152 4 */
| u32 bitrate_max; /* 156 4 */
| struct can_clock clock; /* 160 4 */
| unsigned int termination_const_cnt; /* 164 4 */
| const u16 * termination_const; /* 168 8 */
| u16 termination; /* 176 2 */
|
| /* XXX 6 bytes hole, try to pack */
|
| struct gpio_desc * termination_gpio; /* 184 8 */
| /* --- cacheline 3 boundary (192 bytes) --- */
| u16 termination_gpio_ohms[2]; /* 192 4 */
| enum can_state state; /* 196 4 */
| u32 ctrlmode; /* 200 4 */
| u32 ctrlmode_supported; /* 204 4 */
| int restart_ms; /* 208 4 */
|
| /* XXX 4 bytes hole, try to pack */
|
| struct delayed_work restart_work; /* 216 88 */
|
| /* XXX last struct has 4 bytes of padding */
|
| /* --- cacheline 4 boundary (256 bytes) was 48 bytes ago --- */
| int (*do_set_bittiming)(struct net_device *); /* 304 8 */
| int (*do_set_data_bittiming)(struct net_device *); /* 312 8 */
| /* --- cacheline 5 boundary (320 bytes) --- */
| int (*do_set_mode)(struct net_device *, enum can_mode); /* 320 8 */
| int (*do_set_termination)(struct net_device *, u16); /* 328 8 */
| int (*do_get_state)(const struct net_device *, enum can_state *); /* 336 8 */
| int (*do_get_berr_counter)(const struct net_device *, struct can_berr_counter *); /* 344 8 */
| unsigned int echo_skb_max; /* 352 4 */
|
| /* XXX 4 bytes hole, try to pack */
|
| struct sk_buff * * echo_skb; /* 360 8 */
|
| /* size: 368, cachelines: 6, members: 32 */
| /* sum members: 354, holes: 3, sum holes: 14 */
| /* paddings: 1, sum paddings: 4 */
| /* last cacheline: 48 bytes */
| };
After:
| $ pahole -C can_priv drivers/net/can/dev/dev.o
| struct can_priv {
| struct net_device * dev; /* 0 8 */
| struct can_device_stats can_stats; /* 8 24 */
| const struct can_bittiming_const * bittiming_const; /* 32 8 */
| const struct can_bittiming_const * data_bittiming_const; /* 40 8 */
| struct can_bittiming bittiming; /* 48 32 */
| /* --- cacheline 1 boundary (64 bytes) was 16 bytes ago --- */
| struct can_bittiming data_bittiming; /* 80 32 */
| const struct can_tdc_const * tdc_const; /* 112 8 */
| struct can_tdc tdc; /* 120 12 */
| /* --- cacheline 2 boundary (128 bytes) was 4 bytes ago --- */
| unsigned int bitrate_const_cnt; /* 132 4 */
| const u32 * bitrate_const; /* 136 8 */
| const u32 * data_bitrate_const; /* 144 8 */
| unsigned int data_bitrate_const_cnt; /* 152 4 */
| u32 bitrate_max; /* 156 4 */
| struct can_clock clock; /* 160 4 */
| unsigned int termination_const_cnt; /* 164 4 */
| const u16 * termination_const; /* 168 8 */
| u16 termination; /* 176 2 */
|
| /* XXX 6 bytes hole, try to pack */
|
| struct gpio_desc * termination_gpio; /* 184 8 */
| /* --- cacheline 3 boundary (192 bytes) --- */
| u16 termination_gpio_ohms[2]; /* 192 4 */
| unsigned int echo_skb_max; /* 196 4 */
| struct sk_buff * * echo_skb; /* 200 8 */
| enum can_state state; /* 208 4 */
| u32 ctrlmode; /* 212 4 */
| u32 ctrlmode_supported; /* 216 4 */
| int restart_ms; /* 220 4 */
| struct delayed_work restart_work; /* 224 88 */
|
| /* XXX last struct has 4 bytes of padding */
|
| /* --- cacheline 4 boundary (256 bytes) was 56 bytes ago --- */
| int (*do_set_bittiming)(struct net_device *); /* 312 8 */
| /* --- cacheline 5 boundary (320 bytes) --- */
| int (*do_set_data_bittiming)(struct net_device *); /* 320 8 */
| int (*do_set_mode)(struct net_device *, enum can_mode); /* 328 8 */
| int (*do_set_termination)(struct net_device *, u16); /* 336 8 */
| int (*do_get_state)(const struct net_device *, enum can_state *); /* 344 8 */
| int (*do_get_berr_counter)(const struct net_device *, struct can_berr_counter *); /* 352 8 */
|
| /* size: 360, cachelines: 6, members: 32 */
| /* sum members: 354, holes: 1, sum holes: 6 */
| /* paddings: 1, sum paddings: 4 */
| /* last cacheline: 40 bytes */
| };
Link: https://lore.kernel.org/all/20211213160226.56219-4-mailhol.vincent@wanadoo.fr
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2021-12-13 16:02:25 +00:00
|
|
|
unsigned int echo_skb_max;
|
|
|
|
|
struct sk_buff **echo_skb;
|
|
|
|
|
|
2009-05-15 23:39:29 +00:00
|
|
|
enum can_state state;
|
2016-03-21 19:18:21 +00:00
|
|
|
|
|
|
|
|
/* CAN controller features - see include/uapi/linux/can/netlink.h */
|
|
|
|
|
u32 ctrlmode; /* current options setting */
|
|
|
|
|
u32 ctrlmode_supported; /* options that can be modified by netlink */
|
2009-05-15 23:39:29 +00:00
|
|
|
|
|
|
|
|
int restart_ms;
|
2016-09-07 13:51:12 +00:00
|
|
|
struct delayed_work restart_work;
|
2009-05-15 23:39:29 +00:00
|
|
|
|
|
|
|
|
int (*do_set_bittiming)(struct net_device *dev);
|
2014-02-28 15:36:23 +00:00
|
|
|
int (*do_set_data_bittiming)(struct net_device *dev);
|
2009-05-15 23:39:29 +00:00
|
|
|
int (*do_set_mode)(struct net_device *dev, enum can_mode mode);
|
2017-01-10 17:52:06 +00:00
|
|
|
int (*do_set_termination)(struct net_device *dev, u16 term);
|
2009-05-15 23:39:29 +00:00
|
|
|
int (*do_get_state)(const struct net_device *dev,
|
|
|
|
|
enum can_state *state);
|
2010-02-22 22:21:17 +00:00
|
|
|
int (*do_get_berr_counter)(const struct net_device *dev,
|
|
|
|
|
struct can_berr_counter *bec);
|
2021-09-18 09:56:36 +00:00
|
|
|
int (*do_get_auto_tdcv)(const struct net_device *dev, u32 *tdcv);
|
2009-05-15 23:39:29 +00:00
|
|
|
};
|
|
|
|
|
|
can: bittiming: allow TDC{V,O} to be zero and add can_tdc_const::tdc{v,o,f}_min
ISO 11898-1 specifies in section 11.3.3 "Transmitter delay
compensation" that "the configuration range for [the] SSP position
shall be at least 0 to 63 minimum time quanta."
Because SSP = TDCV + TDCO, it means that we should allow both TDCV and
TDCO to hold zero value in order to honor SSP's minimum possible
value.
However, current implementation assigned special meaning to TDCV and
TDCO's zero values:
* TDCV = 0 -> TDCV is automatically measured by the transceiver.
* TDCO = 0 -> TDC is off.
In order to allow for those values to really be zero and to maintain
current features, we introduce two new flags:
* CAN_CTRLMODE_TDC_AUTO indicates that the controller support
automatic measurement of TDCV.
* CAN_CTRLMODE_TDC_MANUAL indicates that the controller support
manual configuration of TDCV. N.B.: current implementation failed
to provide an option for the driver to indicate that only manual
mode was supported.
TDC is disabled if both CAN_CTRLMODE_TDC_AUTO and
CAN_CTRLMODE_TDC_MANUAL flags are off, c.f. the helper function
can_tdc_is_enabled() which is also introduced in this patch.
Also, this patch adds three fields: tdcv_min, tdco_min and tdcf_min to
struct can_tdc_const. While we are not convinced that those three
fields could be anything else than zero, we can imagine that some
controllers might specify a lower bound on these. Thus, those minimums
are really added "just in case".
Comments of struct can_tdc and can_tdc_const are updated accordingly.
Finally, the changes are applied to the etas_es58x driver.
Link: https://lore.kernel.org/all/20210918095637.20108-2-mailhol.vincent@wanadoo.fr
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2021-09-18 09:56:32 +00:00
|
|
|
static inline bool can_tdc_is_enabled(const struct can_priv *priv)
|
|
|
|
|
{
|
|
|
|
|
return !!(priv->ctrlmode & CAN_CTRLMODE_TDC_MASK);
|
|
|
|
|
}
|
2014-11-07 08:45:12 +00:00
|
|
|
|
2021-09-18 09:56:37 +00:00
|
|
|
/*
|
|
|
|
|
* can_get_relative_tdco() - TDCO relative to the sample point
|
|
|
|
|
*
|
|
|
|
|
* struct can_tdc::tdco represents the absolute offset from TDCV. Some
|
|
|
|
|
* controllers use instead an offset relative to the Sample Point (SP)
|
|
|
|
|
* such that:
|
|
|
|
|
*
|
|
|
|
|
* SSP = TDCV + absolute TDCO
|
|
|
|
|
* = TDCV + SP + relative TDCO
|
|
|
|
|
*
|
|
|
|
|
* -+----------- one bit ----------+-- TX pin
|
|
|
|
|
* |<--- Sample Point --->|
|
|
|
|
|
*
|
|
|
|
|
* --+----------- one bit ----------+-- RX pin
|
|
|
|
|
* |<-------- TDCV -------->|
|
|
|
|
|
* |<------------------------>| absolute TDCO
|
|
|
|
|
* |<--- Sample Point --->|
|
|
|
|
|
* | |<->| relative TDCO
|
|
|
|
|
* |<------------- Secondary Sample Point ------------>|
|
|
|
|
|
*/
|
|
|
|
|
static inline s32 can_get_relative_tdco(const struct can_priv *priv)
|
|
|
|
|
{
|
|
|
|
|
const struct can_bittiming *dbt = &priv->data_bittiming;
|
|
|
|
|
s32 sample_point_in_tc = (CAN_SYNC_SEG + dbt->prop_seg +
|
|
|
|
|
dbt->phase_seg1) * dbt->brp;
|
|
|
|
|
|
|
|
|
|
return (s32)priv->tdc.tdco - sample_point_in_tc;
|
|
|
|
|
}
|
|
|
|
|
|
2016-03-21 19:18:21 +00:00
|
|
|
/* helper to define static CAN controller features at device creation time */
|
2021-12-13 16:02:24 +00:00
|
|
|
static inline int __must_check can_set_static_ctrlmode(struct net_device *dev,
|
|
|
|
|
u32 static_mode)
|
2016-03-21 19:18:21 +00:00
|
|
|
{
|
|
|
|
|
struct can_priv *priv = netdev_priv(dev);
|
|
|
|
|
|
|
|
|
|
/* alloc_candev() succeeded => netdev_priv() is valid at this point */
|
2021-12-13 16:02:24 +00:00
|
|
|
if (priv->ctrlmode_supported & static_mode) {
|
|
|
|
|
netdev_warn(dev,
|
|
|
|
|
"Controller features can not be supported and static at the same time\n");
|
|
|
|
|
return -EINVAL;
|
|
|
|
|
}
|
2016-03-21 19:18:21 +00:00
|
|
|
priv->ctrlmode = static_mode;
|
|
|
|
|
|
|
|
|
|
/* override MTU which was set by default in can_setup()? */
|
|
|
|
|
if (static_mode & CAN_CTRLMODE_FD)
|
|
|
|
|
dev->mtu = CANFD_MTU;
|
2021-12-13 16:02:24 +00:00
|
|
|
|
|
|
|
|
return 0;
|
2016-03-21 19:18:21 +00:00
|
|
|
}
|
|
|
|
|
|
2021-12-13 16:02:23 +00:00
|
|
|
static inline u32 can_get_static_ctrlmode(struct can_priv *priv)
|
|
|
|
|
{
|
|
|
|
|
return priv->ctrlmode & ~priv->ctrlmode_supported;
|
|
|
|
|
}
|
|
|
|
|
|
2022-09-12 17:07:24 +00:00
|
|
|
static inline bool can_is_canxl_dev_mtu(unsigned int mtu)
|
|
|
|
|
{
|
|
|
|
|
return (mtu >= CANXL_MIN_MTU && mtu <= CANXL_MAX_MTU);
|
|
|
|
|
}
|
|
|
|
|
|
2022-11-02 09:54:31 +00:00
|
|
|
/* drop skb if it does not contain a valid CAN frame for sending */
|
|
|
|
|
static inline bool can_dev_dropped_skb(struct net_device *dev, struct sk_buff *skb)
|
|
|
|
|
{
|
|
|
|
|
struct can_priv *priv = netdev_priv(dev);
|
|
|
|
|
|
|
|
|
|
if (priv->ctrlmode & CAN_CTRLMODE_LISTENONLY) {
|
|
|
|
|
netdev_info_once(dev,
|
|
|
|
|
"interface in listen only mode, dropping skb\n");
|
|
|
|
|
kfree_skb(skb);
|
|
|
|
|
dev->stats.tx_dropped++;
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return can_dropped_invalid_skb(dev, skb);
|
|
|
|
|
}
|
|
|
|
|
|
2021-01-11 14:19:21 +00:00
|
|
|
void can_setup(struct net_device *dev);
|
|
|
|
|
|
2018-06-13 14:37:17 +00:00
|
|
|
struct net_device *alloc_candev_mqs(int sizeof_priv, unsigned int echo_skb_max,
|
|
|
|
|
unsigned int txqs, unsigned int rxqs);
|
|
|
|
|
#define alloc_candev(sizeof_priv, echo_skb_max) \
|
|
|
|
|
alloc_candev_mqs(sizeof_priv, echo_skb_max, 1, 1)
|
|
|
|
|
#define alloc_candev_mq(sizeof_priv, echo_skb_max, count) \
|
|
|
|
|
alloc_candev_mqs(sizeof_priv, echo_skb_max, count, count)
|
2009-05-15 23:39:29 +00:00
|
|
|
void free_candev(struct net_device *dev);
|
|
|
|
|
|
2012-12-18 17:50:56 +00:00
|
|
|
/* a candev safe wrapper around netdev_priv */
|
|
|
|
|
struct can_priv *safe_candev_priv(struct net_device *dev);
|
|
|
|
|
|
2009-05-15 23:39:29 +00:00
|
|
|
int open_candev(struct net_device *dev);
|
|
|
|
|
void close_candev(struct net_device *dev);
|
2014-02-28 15:36:24 +00:00
|
|
|
int can_change_mtu(struct net_device *dev, int new_mtu);
|
2022-07-27 10:16:35 +00:00
|
|
|
int can_eth_ioctl_hwts(struct net_device *netdev, struct ifreq *ifr, int cmd);
|
2022-07-27 10:16:34 +00:00
|
|
|
int can_ethtool_op_get_ts_info_hwts(struct net_device *dev,
|
|
|
|
|
struct ethtool_ts_info *info);
|
2009-05-15 23:39:29 +00:00
|
|
|
|
|
|
|
|
int register_candev(struct net_device *dev);
|
|
|
|
|
void unregister_candev(struct net_device *dev);
|
|
|
|
|
|
|
|
|
|
int can_restart_now(struct net_device *dev);
|
|
|
|
|
void can_bus_off(struct net_device *dev);
|
|
|
|
|
|
2021-01-19 17:03:55 +00:00
|
|
|
const char *can_get_state_str(const enum can_state state);
|
2014-12-03 17:54:13 +00:00
|
|
|
void can_change_state(struct net_device *dev, struct can_frame *cf,
|
|
|
|
|
enum can_state tx_state, enum can_state rx_state);
|
|
|
|
|
|
2018-01-10 10:55:18 +00:00
|
|
|
#ifdef CONFIG_OF
|
|
|
|
|
void of_can_transceiver(struct net_device *dev);
|
|
|
|
|
#else
|
|
|
|
|
static inline void of_can_transceiver(struct net_device *dev) { }
|
|
|
|
|
#endif
|
|
|
|
|
|
2021-01-11 14:19:21 +00:00
|
|
|
extern struct rtnl_link_ops can_link_ops;
|
|
|
|
|
int can_netlink_register(void);
|
|
|
|
|
void can_netlink_unregister(void);
|
|
|
|
|
|
2014-05-15 18:31:56 +00:00
|
|
|
#endif /* !_CAN_DEV_H */
|