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 22:07:57 +08:00
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/* SPDX-License-Identifier: GPL-2.0 */
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2005-04-17 06:20:36 +08:00
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#ifndef _LINUX_INETDEVICE_H
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#define _LINUX_INETDEVICE_H
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#ifdef __KERNEL__
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2007-06-05 14:35:37 +08:00
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#include <linux/bitmap.h>
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2005-04-17 06:20:36 +08:00
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#include <linux/if.h>
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2013-08-22 12:09:47 +08:00
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#include <linux/ip.h>
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2005-04-17 06:20:36 +08:00
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#include <linux/netdevice.h>
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#include <linux/rcupdate.h>
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#include <linux/timer.h>
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2007-06-23 08:04:27 +08:00
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#include <linux/sysctl.h>
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2010-09-15 12:04:31 +08:00
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#include <linux/rtnetlink.h>
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2017-06-30 18:08:03 +08:00
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#include <linux/refcount.h>
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2005-04-17 06:20:36 +08:00
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2009-11-05 01:50:58 +08:00
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struct ipv4_devconf {
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2005-04-17 06:20:36 +08:00
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void *sysctl;
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2010-11-16 12:31:20 +08:00
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int data[IPV4_DEVCONF_MAX];
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DECLARE_BITMAP(state, IPV4_DEVCONF_MAX);
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2005-04-17 06:20:36 +08:00
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};
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2013-06-07 23:48:57 +08:00
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#define MC_HASH_SZ_LOG 9
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2009-11-05 01:50:58 +08:00
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struct in_device {
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2005-04-17 06:20:36 +08:00
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struct net_device *dev;
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2021-12-05 12:22:12 +08:00
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netdevice_tracker dev_tracker;
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2017-06-30 18:08:03 +08:00
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refcount_t refcnt;
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2005-04-17 06:20:36 +08:00
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int dead;
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2019-06-01 00:27:09 +08:00
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struct in_ifaddr __rcu *ifa_list;/* IP ifaddr chain */
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2013-06-07 23:48:57 +08:00
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2010-11-12 13:46:50 +08:00
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struct ip_mc_list __rcu *mc_list; /* IP multicast filter chain */
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2013-06-07 23:48:57 +08:00
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struct ip_mc_list __rcu * __rcu *mc_hash;
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2010-11-12 13:46:50 +08:00
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int mc_count; /* Number of installed mcasts */
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2005-04-17 06:20:36 +08:00
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spinlock_t mc_tomb_lock;
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struct ip_mc_list *mc_tomb;
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unsigned long mr_v1_seen;
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unsigned long mr_v2_seen;
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unsigned long mr_maxdelay;
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2018-10-26 11:30:35 +08:00
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unsigned long mr_qi; /* Query Interval */
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unsigned long mr_qri; /* Query Response Interval */
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unsigned char mr_qrv; /* Query Robustness Variable */
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2005-04-17 06:20:36 +08:00
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unsigned char mr_gq_running;
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2021-08-12 03:57:15 +08:00
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u32 mr_ifc_count;
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2005-04-17 06:20:36 +08:00
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struct timer_list mr_gq_timer; /* general query timer */
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struct timer_list mr_ifc_timer; /* interface change timer */
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struct neigh_parms *arp_parms;
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struct ipv4_devconf cnf;
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struct rcu_head rcu_head;
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};
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2010-02-14 11:25:51 +08:00
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#define IPV4_DEVCONF(cnf, attr) ((cnf).data[IPV4_DEVCONF_ ## attr - 1])
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2007-12-17 05:32:48 +08:00
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#define IPV4_DEVCONF_ALL(net, attr) \
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IPV4_DEVCONF((*(net)->ipv4.devconf_all), attr)
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2007-06-05 14:34:44 +08:00
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static inline int ipv4_devconf_get(struct in_device *in_dev, int index)
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{
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index--;
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return in_dev->cnf.data[index];
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}
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static inline void ipv4_devconf_set(struct in_device *in_dev, int index,
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int val)
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{
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index--;
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2007-06-05 14:35:37 +08:00
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set_bit(index, in_dev->cnf.state);
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2007-06-05 14:34:44 +08:00
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in_dev->cnf.data[index] = val;
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}
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2007-06-05 14:36:06 +08:00
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static inline void ipv4_devconf_setall(struct in_device *in_dev)
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{
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2010-11-16 12:31:20 +08:00
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bitmap_fill(in_dev->cnf.state, IPV4_DEVCONF_MAX);
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2007-06-05 14:36:06 +08:00
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}
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2007-06-05 14:34:44 +08:00
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#define IN_DEV_CONF_GET(in_dev, attr) \
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2010-02-14 11:25:51 +08:00
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ipv4_devconf_get((in_dev), IPV4_DEVCONF_ ## attr)
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2007-06-05 14:34:44 +08:00
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#define IN_DEV_CONF_SET(in_dev, attr, val) \
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2010-02-14 11:25:51 +08:00
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ipv4_devconf_set((in_dev), IPV4_DEVCONF_ ## attr, (val))
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2007-06-05 14:34:44 +08:00
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#define IN_DEV_ANDCONF(in_dev, attr) \
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2008-03-25 20:47:49 +08:00
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(IPV4_DEVCONF_ALL(dev_net(in_dev->dev), attr) && \
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2007-12-17 05:32:48 +08:00
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IN_DEV_CONF_GET((in_dev), attr))
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2012-08-04 05:27:25 +08:00
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#define IN_DEV_NET_ORCONF(in_dev, net, attr) \
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(IPV4_DEVCONF_ALL(net, attr) || \
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2007-12-17 05:32:48 +08:00
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IN_DEV_CONF_GET((in_dev), attr))
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2012-08-04 05:27:25 +08:00
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#define IN_DEV_ORCONF(in_dev, attr) \
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IN_DEV_NET_ORCONF(in_dev, dev_net(in_dev->dev), attr)
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2007-06-05 14:34:44 +08:00
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#define IN_DEV_MAXCONF(in_dev, attr) \
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2008-03-25 20:47:49 +08:00
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(max(IPV4_DEVCONF_ALL(dev_net(in_dev->dev), attr), \
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2007-12-17 05:32:48 +08:00
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IN_DEV_CONF_GET((in_dev), attr)))
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2007-06-05 14:34:44 +08:00
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#define IN_DEV_FORWARD(in_dev) IN_DEV_CONF_GET((in_dev), FORWARDING)
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2007-12-11 18:16:47 +08:00
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#define IN_DEV_MFORWARD(in_dev) IN_DEV_ANDCONF((in_dev), MC_FORWARDING)
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2018-07-27 16:37:28 +08:00
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#define IN_DEV_BFORWARD(in_dev) IN_DEV_ANDCONF((in_dev), BC_FORWARDING)
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2009-07-28 09:39:45 +08:00
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#define IN_DEV_RPFILTER(in_dev) IN_DEV_MAXCONF((in_dev), RP_FILTER)
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2009-12-26 09:30:22 +08:00
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#define IN_DEV_SRC_VMARK(in_dev) IN_DEV_ORCONF((in_dev), SRC_VMARK)
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2007-06-05 14:34:44 +08:00
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#define IN_DEV_SOURCE_ROUTE(in_dev) IN_DEV_ANDCONF((in_dev), \
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ACCEPT_SOURCE_ROUTE)
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2009-12-03 09:25:58 +08:00
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#define IN_DEV_ACCEPT_LOCAL(in_dev) IN_DEV_ORCONF((in_dev), ACCEPT_LOCAL)
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2007-06-05 14:34:44 +08:00
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#define IN_DEV_BOOTP_RELAY(in_dev) IN_DEV_ANDCONF((in_dev), BOOTP_RELAY)
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#define IN_DEV_LOG_MARTIANS(in_dev) IN_DEV_ORCONF((in_dev), LOG_MARTIANS)
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#define IN_DEV_PROXY_ARP(in_dev) IN_DEV_ORCONF((in_dev), PROXY_ARP)
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2020-11-08 03:35:14 +08:00
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#define IN_DEV_PROXY_ARP_PVLAN(in_dev) IN_DEV_ORCONF((in_dev), PROXY_ARP_PVLAN)
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2007-06-05 14:34:44 +08:00
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#define IN_DEV_SHARED_MEDIA(in_dev) IN_DEV_ORCONF((in_dev), SHARED_MEDIA)
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#define IN_DEV_TX_REDIRECTS(in_dev) IN_DEV_ORCONF((in_dev), SEND_REDIRECTS)
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#define IN_DEV_SEC_REDIRECTS(in_dev) IN_DEV_ORCONF((in_dev), \
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SECURE_REDIRECTS)
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#define IN_DEV_IDTAG(in_dev) IN_DEV_CONF_GET(in_dev, TAG)
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#define IN_DEV_MEDIUM_ID(in_dev) IN_DEV_CONF_GET(in_dev, MEDIUM_ID)
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#define IN_DEV_PROMOTE_SECONDARIES(in_dev) \
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IN_DEV_ORCONF((in_dev), \
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PROMOTE_SECONDARIES)
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2012-06-12 08:44:01 +08:00
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#define IN_DEV_ROUTE_LOCALNET(in_dev) IN_DEV_ORCONF(in_dev, ROUTE_LOCALNET)
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2012-08-04 05:27:25 +08:00
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#define IN_DEV_NET_ROUTE_LOCALNET(in_dev, net) \
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IN_DEV_NET_ORCONF(in_dev, net, ROUTE_LOCALNET)
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2005-04-17 06:20:36 +08:00
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#define IN_DEV_RX_REDIRECTS(in_dev) \
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((IN_DEV_FORWARD(in_dev) && \
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2007-06-05 14:34:44 +08:00
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IN_DEV_ANDCONF((in_dev), ACCEPT_REDIRECTS)) \
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2005-04-17 06:20:36 +08:00
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|| (!IN_DEV_FORWARD(in_dev) && \
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2007-06-05 14:34:44 +08:00
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IN_DEV_ORCONF((in_dev), ACCEPT_REDIRECTS)))
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2005-04-17 06:20:36 +08:00
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2015-06-24 01:45:37 +08:00
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#define IN_DEV_IGNORE_ROUTES_WITH_LINKDOWN(in_dev) \
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2020-11-08 03:35:13 +08:00
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IN_DEV_ORCONF((in_dev), IGNORE_ROUTES_WITH_LINKDOWN)
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2015-06-24 01:45:37 +08:00
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2007-06-05 14:34:44 +08:00
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#define IN_DEV_ARPFILTER(in_dev) IN_DEV_ORCONF((in_dev), ARPFILTER)
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2022-07-14 07:40:47 +08:00
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#define IN_DEV_ARP_ACCEPT(in_dev) IN_DEV_MAXCONF((in_dev), ARP_ACCEPT)
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2007-06-05 14:34:44 +08:00
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#define IN_DEV_ARP_ANNOUNCE(in_dev) IN_DEV_MAXCONF((in_dev), ARP_ANNOUNCE)
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#define IN_DEV_ARP_IGNORE(in_dev) IN_DEV_MAXCONF((in_dev), ARP_IGNORE)
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2009-02-01 17:04:33 +08:00
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#define IN_DEV_ARP_NOTIFY(in_dev) IN_DEV_MAXCONF((in_dev), ARP_NOTIFY)
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net: arp: introduce arp_evict_nocarrier sysctl parameter
This change introduces a new sysctl parameter, arp_evict_nocarrier.
When set (default) the ARP cache will be cleared on a NOCARRIER event.
This new option has been defaulted to '1' which maintains existing
behavior.
Clearing the ARP cache on NOCARRIER is relatively new, introduced by:
commit 859bd2ef1fc1110a8031b967ee656c53a6260a76
Author: David Ahern <dsahern@gmail.com>
Date: Thu Oct 11 20:33:49 2018 -0700
net: Evict neighbor entries on carrier down
The reason for this changes is to prevent the ARP cache from being
cleared when a wireless device roams. Specifically for wireless roams
the ARP cache should not be cleared because the underlying network has not
changed. Clearing the ARP cache in this case can introduce significant
delays sending out packets after a roam.
A user reported such a situation here:
https://lore.kernel.org/linux-wireless/CACsRnHWa47zpx3D1oDq9JYnZWniS8yBwW1h0WAVZ6vrbwL_S0w@mail.gmail.com/
After some investigation it was found that the kernel was holding onto
packets until ARP finished which resulted in this 1 second delay. It
was also found that the first ARP who-has was never responded to,
which is actually what caues the delay. This change is more or less
working around this behavior, but again, there is no reason to clear
the cache on a roam anyways.
As for the unanswered who-has, we know the packet made it OTA since
it was seen while monitoring. Why it never received a response is
unknown. In any case, since this is a problem on the AP side of things
all that can be done is to work around it until it is solved.
Some background on testing/reproducing the packet delay:
Hardware:
- 2 access points configured for Fast BSS Transition (Though I don't
see why regular reassociation wouldn't have the same behavior)
- Wireless station running IWD as supplicant
- A device on network able to respond to pings (I used one of the APs)
Procedure:
- Connect to first AP
- Ping once to establish an ARP entry
- Start a tcpdump
- Roam to second AP
- Wait for operstate UP event, and note the timestamp
- Start pinging
Results:
Below is the tcpdump after UP. It was recorded the interface went UP at
10:42:01.432875.
10:42:01.461871 ARP, Request who-has 192.168.254.1 tell 192.168.254.71, length 28
10:42:02.497976 ARP, Request who-has 192.168.254.1 tell 192.168.254.71, length 28
10:42:02.507162 ARP, Reply 192.168.254.1 is-at ac:86:74:55:b0:20, length 46
10:42:02.507185 IP 192.168.254.71 > 192.168.254.1: ICMP echo request, id 52792, seq 1, length 64
10:42:02.507205 IP 192.168.254.71 > 192.168.254.1: ICMP echo request, id 52792, seq 2, length 64
10:42:02.507212 IP 192.168.254.71 > 192.168.254.1: ICMP echo request, id 52792, seq 3, length 64
10:42:02.507219 IP 192.168.254.71 > 192.168.254.1: ICMP echo request, id 52792, seq 4, length 64
10:42:02.507225 IP 192.168.254.71 > 192.168.254.1: ICMP echo request, id 52792, seq 5, length 64
10:42:02.507232 IP 192.168.254.71 > 192.168.254.1: ICMP echo request, id 52792, seq 6, length 64
10:42:02.515373 IP 192.168.254.1 > 192.168.254.71: ICMP echo reply, id 52792, seq 1, length 64
10:42:02.521399 IP 192.168.254.1 > 192.168.254.71: ICMP echo reply, id 52792, seq 2, length 64
10:42:02.521612 IP 192.168.254.1 > 192.168.254.71: ICMP echo reply, id 52792, seq 3, length 64
10:42:02.521941 IP 192.168.254.1 > 192.168.254.71: ICMP echo reply, id 52792, seq 4, length 64
10:42:02.522419 IP 192.168.254.1 > 192.168.254.71: ICMP echo reply, id 52792, seq 5, length 64
10:42:02.523085 IP 192.168.254.1 > 192.168.254.71: ICMP echo reply, id 52792, seq 6, length 64
You can see the first ARP who-has went out very quickly after UP, but
was never responded to. Nearly a second later the kernel retries and
gets a response. Only then do the ping packets go out. If an ARP entry
is manually added prior to UP (after the cache is cleared) it is seen
that the first ping is never responded to, so its not only an issue with
ARP but with data packets in general.
As mentioned prior, the wireless interface was also monitored to verify
the ping/ARP packet made it OTA which was observed to be true.
Signed-off-by: James Prestwood <prestwoj@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-11-02 01:36:28 +08:00
|
|
|
#define IN_DEV_ARP_EVICT_NOCARRIER(in_dev) IN_DEV_ANDCONF((in_dev), \
|
|
|
|
ARP_EVICT_NOCARRIER)
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2009-11-05 01:50:58 +08:00
|
|
|
struct in_ifaddr {
|
2011-02-19 04:42:28 +08:00
|
|
|
struct hlist_node hash;
|
2019-06-01 00:27:09 +08:00
|
|
|
struct in_ifaddr __rcu *ifa_next;
|
2005-04-17 06:20:36 +08:00
|
|
|
struct in_device *ifa_dev;
|
|
|
|
struct rcu_head rcu_head;
|
2006-09-29 09:00:55 +08:00
|
|
|
__be32 ifa_local;
|
|
|
|
__be32 ifa_address;
|
|
|
|
__be32 ifa_mask;
|
2018-05-27 23:09:57 +08:00
|
|
|
__u32 ifa_rt_priority;
|
2006-09-29 09:00:55 +08:00
|
|
|
__be32 ifa_broadcast;
|
2005-04-17 06:20:36 +08:00
|
|
|
unsigned char ifa_scope;
|
|
|
|
unsigned char ifa_prefixlen;
|
2022-02-17 23:02:02 +08:00
|
|
|
unsigned char ifa_proto;
|
2013-12-08 19:16:10 +08:00
|
|
|
__u32 ifa_flags;
|
2005-04-17 06:20:36 +08:00
|
|
|
char ifa_label[IFNAMSIZ];
|
2013-01-24 17:41:41 +08:00
|
|
|
|
|
|
|
/* In seconds, relative to tstamp. Expiry is at tstamp + HZ * lft. */
|
|
|
|
__u32 ifa_valid_lft;
|
|
|
|
__u32 ifa_preferred_lft;
|
|
|
|
unsigned long ifa_cstamp; /* created timestamp */
|
|
|
|
unsigned long ifa_tstamp; /* updated timestamp */
|
2005-04-17 06:20:36 +08:00
|
|
|
};
|
|
|
|
|
2017-06-09 04:12:14 +08:00
|
|
|
struct in_validator_info {
|
|
|
|
__be32 ivi_addr;
|
|
|
|
struct in_device *ivi_dev;
|
2017-10-19 00:56:54 +08:00
|
|
|
struct netlink_ext_ack *extack;
|
2017-06-09 04:12:14 +08:00
|
|
|
};
|
|
|
|
|
2013-09-27 05:48:15 +08:00
|
|
|
int register_inetaddr_notifier(struct notifier_block *nb);
|
|
|
|
int unregister_inetaddr_notifier(struct notifier_block *nb);
|
2017-06-09 04:12:14 +08:00
|
|
|
int register_inetaddr_validator_notifier(struct notifier_block *nb);
|
|
|
|
int unregister_inetaddr_validator_notifier(struct notifier_block *nb);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2017-03-29 05:28:02 +08:00
|
|
|
void inet_netconf_notify_devconf(struct net *net, int event, int type,
|
|
|
|
int ifindex, struct ipv4_devconf *devconf);
|
2012-12-04 09:13:35 +08:00
|
|
|
|
2013-09-27 05:48:15 +08:00
|
|
|
struct net_device *__ip_dev_find(struct net *net, __be32 addr, bool devref);
|
2010-09-30 11:31:56 +08:00
|
|
|
static inline struct net_device *ip_dev_find(struct net *net, __be32 addr)
|
|
|
|
{
|
|
|
|
return __ip_dev_find(net, addr, true);
|
|
|
|
}
|
|
|
|
|
2013-09-27 05:48:15 +08:00
|
|
|
int inet_addr_onlink(struct in_device *in_dev, __be32 a, __be32 b);
|
2017-07-01 19:53:12 +08:00
|
|
|
int devinet_ioctl(struct net *net, unsigned int cmd, struct ifreq *);
|
2021-07-22 22:29:01 +08:00
|
|
|
#ifdef CONFIG_INET
|
|
|
|
int inet_gifconf(struct net_device *dev, char __user *buf, int len, int size);
|
|
|
|
#else
|
|
|
|
static inline int inet_gifconf(struct net_device *dev, char __user *buf,
|
|
|
|
int len, int size)
|
|
|
|
{
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
#endif
|
2013-09-27 05:48:15 +08:00
|
|
|
void devinet_init(void);
|
|
|
|
struct in_device *inetdev_by_index(struct net *, int);
|
|
|
|
__be32 inet_select_addr(const struct net_device *dev, __be32 dst, int scope);
|
2013-12-10 22:02:40 +08:00
|
|
|
__be32 inet_confirm_addr(struct net *net, struct in_device *in_dev, __be32 dst,
|
|
|
|
__be32 local, int scope);
|
2013-09-27 05:48:15 +08:00
|
|
|
struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, __be32 prefix,
|
|
|
|
__be32 mask);
|
2017-09-21 00:26:53 +08:00
|
|
|
struct in_ifaddr *inet_lookup_ifaddr_rcu(struct net *net, __be32 addr);
|
2019-06-01 00:27:04 +08:00
|
|
|
static inline bool inet_ifa_match(__be32 addr, const struct in_ifaddr *ifa)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
|
|
|
return !((addr^ifa->ifa_address)&ifa->ifa_mask);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Check if a mask is acceptable.
|
|
|
|
*/
|
|
|
|
|
2015-10-08 21:29:01 +08:00
|
|
|
static __inline__ bool bad_mask(__be32 mask, __be32 addr)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2006-11-15 12:51:49 +08:00
|
|
|
__u32 hmask;
|
2005-04-17 06:20:36 +08:00
|
|
|
if (addr & (mask = ~mask))
|
2015-10-08 21:29:01 +08:00
|
|
|
return true;
|
2006-11-15 12:51:49 +08:00
|
|
|
hmask = ntohl(mask);
|
|
|
|
if (hmask & (hmask+1))
|
2015-10-08 21:29:01 +08:00
|
|
|
return true;
|
|
|
|
return false;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2019-06-01 00:27:04 +08:00
|
|
|
#define in_dev_for_each_ifa_rtnl(ifa, in_dev) \
|
2019-06-01 00:27:09 +08:00
|
|
|
for (ifa = rtnl_dereference((in_dev)->ifa_list); ifa; \
|
|
|
|
ifa = rtnl_dereference(ifa->ifa_next))
|
2019-06-01 00:27:04 +08:00
|
|
|
|
|
|
|
#define in_dev_for_each_ifa_rcu(ifa, in_dev) \
|
2019-06-01 00:27:09 +08:00
|
|
|
for (ifa = rcu_dereference((in_dev)->ifa_list); ifa; \
|
|
|
|
ifa = rcu_dereference(ifa->ifa_next))
|
2019-06-01 00:27:04 +08:00
|
|
|
|
2005-10-04 05:35:55 +08:00
|
|
|
static inline struct in_device *__in_dev_get_rcu(const struct net_device *dev)
|
|
|
|
{
|
2010-09-15 12:04:31 +08:00
|
|
|
return rcu_dereference(dev->ip_ptr);
|
2005-10-04 05:35:55 +08:00
|
|
|
}
|
|
|
|
|
2010-09-15 12:04:31 +08:00
|
|
|
static inline struct in_device *in_dev_get(const struct net_device *dev)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
|
|
|
struct in_device *in_dev;
|
|
|
|
|
|
|
|
rcu_read_lock();
|
2005-10-04 05:35:55 +08:00
|
|
|
in_dev = __in_dev_get_rcu(dev);
|
2005-04-17 06:20:36 +08:00
|
|
|
if (in_dev)
|
2017-06-30 18:08:03 +08:00
|
|
|
refcount_inc(&in_dev->refcnt);
|
2005-04-17 06:20:36 +08:00
|
|
|
rcu_read_unlock();
|
|
|
|
return in_dev;
|
|
|
|
}
|
|
|
|
|
2010-09-15 12:04:31 +08:00
|
|
|
static inline struct in_device *__in_dev_get_rtnl(const struct net_device *dev)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2010-12-01 09:37:42 +08:00
|
|
|
return rtnl_dereference(dev->ip_ptr);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2019-03-28 11:53:47 +08:00
|
|
|
/* called with rcu_read_lock or rtnl held */
|
|
|
|
static inline bool ip_ignore_linkdown(const struct net_device *dev)
|
|
|
|
{
|
|
|
|
struct in_device *in_dev;
|
|
|
|
bool rc = false;
|
|
|
|
|
|
|
|
in_dev = rcu_dereference_rtnl(dev->ip_ptr);
|
|
|
|
if (in_dev &&
|
|
|
|
IN_DEV_IGNORE_ROUTES_WITH_LINKDOWN(in_dev))
|
|
|
|
rc = true;
|
|
|
|
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
2013-12-08 02:26:56 +08:00
|
|
|
static inline struct neigh_parms *__in_dev_arp_parms_get_rcu(const struct net_device *dev)
|
|
|
|
{
|
|
|
|
struct in_device *in_dev = __in_dev_get_rcu(dev);
|
|
|
|
|
|
|
|
return in_dev ? in_dev->arp_parms : NULL;
|
|
|
|
}
|
|
|
|
|
2013-09-27 05:48:15 +08:00
|
|
|
void in_dev_finish_destroy(struct in_device *idev);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
static inline void in_dev_put(struct in_device *idev)
|
|
|
|
{
|
2017-06-30 18:08:03 +08:00
|
|
|
if (refcount_dec_and_test(&idev->refcnt))
|
2005-04-17 06:20:36 +08:00
|
|
|
in_dev_finish_destroy(idev);
|
|
|
|
}
|
|
|
|
|
2017-06-30 18:08:03 +08:00
|
|
|
#define __in_dev_put(idev) refcount_dec(&(idev)->refcnt)
|
|
|
|
#define in_dev_hold(idev) refcount_inc(&(idev)->refcnt)
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
|
2006-09-27 13:17:09 +08:00
|
|
|
static __inline__ __be32 inet_make_mask(int logmask)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
|
|
|
if (logmask)
|
2014-11-13 20:47:26 +08:00
|
|
|
return htonl(~((1U<<(32-logmask))-1));
|
2005-04-17 06:20:36 +08:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2006-11-15 12:51:49 +08:00
|
|
|
static __inline__ int inet_mask_len(__be32 mask)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2006-11-15 12:51:49 +08:00
|
|
|
__u32 hmask = ntohl(mask);
|
|
|
|
if (!hmask)
|
2005-04-17 06:20:36 +08:00
|
|
|
return 0;
|
2006-11-15 12:51:49 +08:00
|
|
|
return 32 - ffz(~hmask);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
#endif /* _LINUX_INETDEVICE_H */
|