2019-05-19 20:08:20 +08:00
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// SPDX-License-Identifier: GPL-2.0-only
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2007-04-24 03:20:05 +08:00
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/*
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* This is the linux wireless configuration interface.
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*
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2010-01-17 22:49:02 +08:00
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* Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
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2014-09-03 20:24:58 +08:00
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* Copyright 2013-2014 Intel Mobile Communications GmbH
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2018-06-09 14:14:42 +08:00
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* Copyright 2015-2017 Intel Deutschland GmbH
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2020-05-29 03:34:41 +08:00
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* Copyright (C) 2018-2020 Intel Corporation
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2007-04-24 03:20:05 +08:00
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*/
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2010-11-17 11:56:49 +08:00
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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2007-04-24 03:20:05 +08:00
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#include <linux/if.h>
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#include <linux/module.h>
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#include <linux/err.h>
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#include <linux/list.h>
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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 16:04:11 +08:00
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#include <linux/slab.h>
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2007-04-24 03:20:05 +08:00
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#include <linux/nl80211.h>
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#include <linux/debugfs.h>
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#include <linux/notifier.h>
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#include <linux/device.h>
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2009-08-19 16:08:22 +08:00
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#include <linux/etherdevice.h>
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2009-06-02 19:01:41 +08:00
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#include <linux/rtnetlink.h>
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2009-10-07 21:09:06 +08:00
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#include <linux/sched.h>
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2007-04-24 03:20:05 +08:00
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#include <net/genetlink.h>
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#include <net/cfg80211.h>
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2007-09-21 01:09:35 +08:00
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#include "nl80211.h"
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2007-04-24 03:20:05 +08:00
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#include "core.h"
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#include "sysfs.h"
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2009-05-02 12:37:21 +08:00
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#include "debugfs.h"
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2009-07-27 18:01:53 +08:00
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#include "wext-compat.h"
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2012-06-27 22:19:42 +08:00
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#include "rdev-ops.h"
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2007-04-24 03:20:05 +08:00
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/* name for sysfs, %d is appended */
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#define PHY_NAME "phy"
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MODULE_AUTHOR("Johannes Berg");
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("wireless configuration support");
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2013-04-29 07:22:06 +08:00
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MODULE_ALIAS_GENL_FAMILY(NL80211_GENL_NAME);
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2007-04-24 03:20:05 +08:00
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2013-05-09 03:45:15 +08:00
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/* RCU-protected (and RTNL for writers) */
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2009-07-07 09:56:12 +08:00
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LIST_HEAD(cfg80211_rdev_list);
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2009-08-07 22:17:38 +08:00
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int cfg80211_rdev_list_generation;
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2009-02-21 13:04:21 +08:00
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2007-04-24 03:20:05 +08:00
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/* for debugfs */
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static struct dentry *ieee80211_debugfs_dir;
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2009-11-25 22:13:00 +08:00
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/* for the cleanup, scan and event works */
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struct workqueue_struct *cfg80211_wq;
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2011-04-22 05:10:27 +08:00
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static bool cfg80211_disable_40mhz_24ghz;
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module_param(cfg80211_disable_40mhz_24ghz, bool, 0644);
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MODULE_PARM_DESC(cfg80211_disable_40mhz_24ghz,
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"Disable 40MHz support in the 2.4GHz band");
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2009-07-07 09:56:12 +08:00
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struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx)
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2007-09-21 01:09:35 +08:00
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{
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2009-07-07 09:56:12 +08:00
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struct cfg80211_registered_device *result = NULL, *rdev;
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2007-09-21 01:09:35 +08:00
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2013-05-09 03:45:15 +08:00
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ASSERT_RTNL();
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2009-02-21 13:04:25 +08:00
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2009-07-07 09:56:12 +08:00
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list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
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if (rdev->wiphy_idx == wiphy_idx) {
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result = rdev;
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2007-09-21 01:09:35 +08:00
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break;
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}
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}
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return result;
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}
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2009-02-21 13:04:26 +08:00
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int get_wiphy_idx(struct wiphy *wiphy)
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{
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2014-04-21 12:53:03 +08:00
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struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
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2012-12-04 01:23:37 +08:00
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2009-07-07 09:56:12 +08:00
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return rdev->wiphy_idx;
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2009-02-21 13:04:26 +08:00
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}
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struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx)
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{
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2009-07-07 09:56:12 +08:00
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struct cfg80211_registered_device *rdev;
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2009-02-21 13:04:26 +08:00
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2013-05-09 03:45:15 +08:00
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ASSERT_RTNL();
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2009-02-21 13:04:26 +08:00
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2009-07-07 09:56:12 +08:00
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rdev = cfg80211_rdev_by_wiphy_idx(wiphy_idx);
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if (!rdev)
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2009-02-21 13:04:26 +08:00
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return NULL;
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2009-07-07 09:56:12 +08:00
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return &rdev->wiphy;
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2009-02-21 13:04:26 +08:00
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}
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2014-10-23 03:23:00 +08:00
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static int cfg80211_dev_check_name(struct cfg80211_registered_device *rdev,
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const char *newname)
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2007-09-21 01:09:35 +08:00
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{
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2009-07-07 09:56:12 +08:00
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struct cfg80211_registered_device *rdev2;
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2014-10-23 03:23:00 +08:00
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int wiphy_idx, taken = -1, digits;
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2007-09-21 01:09:35 +08:00
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2013-05-09 03:45:15 +08:00
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ASSERT_RTNL();
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2008-05-09 05:30:18 +08:00
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2018-04-03 20:33:49 +08:00
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if (strlen(newname) > NL80211_WIPHY_NAME_MAXLEN)
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return -EINVAL;
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2010-10-12 02:46:52 +08:00
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/* prohibit calling the thing phy%d when %d is not its number */
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sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken);
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if (taken == strlen(newname) && wiphy_idx != rdev->wiphy_idx) {
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/* count number of places needed to print wiphy_idx */
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digits = 1;
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while (wiphy_idx /= 10)
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digits++;
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/*
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* deny the name if it is phy<idx> where <idx> is printed
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* without leading zeroes. taken == strlen(newname) here
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*/
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if (taken == strlen(PHY_NAME) + digits)
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return -EINVAL;
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}
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2014-10-23 03:23:00 +08:00
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/* Ensure another device does not already have this name. */
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list_for_each_entry(rdev2, &cfg80211_rdev_list, list)
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if (strcmp(newname, wiphy_name(&rdev2->wiphy)) == 0)
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return -EINVAL;
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return 0;
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}
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int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
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char *newname)
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{
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int result;
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ASSERT_RTNL();
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2010-10-12 02:46:52 +08:00
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2008-05-09 05:30:18 +08:00
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/* Ignore nop renames */
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2014-10-23 03:23:00 +08:00
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if (strcmp(newname, wiphy_name(&rdev->wiphy)) == 0)
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2009-03-24 16:35:46 +08:00
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return 0;
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2008-05-09 05:30:18 +08:00
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2014-10-23 03:23:00 +08:00
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result = cfg80211_dev_check_name(rdev, newname);
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if (result < 0)
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return result;
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2007-09-21 01:09:35 +08:00
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result = device_rename(&rdev->wiphy.dev, newname);
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if (result)
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2009-03-24 16:35:46 +08:00
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return result;
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2007-09-21 01:09:35 +08:00
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2020-05-25 17:38:17 +08:00
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if (!IS_ERR_OR_NULL(rdev->wiphy.debugfsdir))
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2019-07-03 15:01:42 +08:00
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debugfs_rename(rdev->wiphy.debugfsdir->d_parent,
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rdev->wiphy.debugfsdir,
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rdev->wiphy.debugfsdir->d_parent, newname);
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2007-09-21 01:09:35 +08:00
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2014-05-26 19:52:25 +08:00
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nl80211_notify_wiphy(rdev, NL80211_CMD_NEW_WIPHY);
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2007-09-21 01:09:35 +08:00
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2009-03-24 16:35:46 +08:00
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return 0;
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2007-09-21 01:09:35 +08:00
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}
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2009-07-14 06:33:35 +08:00
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int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
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struct net *net)
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{
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struct wireless_dev *wdev;
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int err = 0;
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2009-11-19 07:56:28 +08:00
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if (!(rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK))
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2009-07-14 06:33:35 +08:00
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return -EOPNOTSUPP;
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2016-05-03 21:52:04 +08:00
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list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
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2012-06-16 00:00:00 +08:00
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if (!wdev->netdev)
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continue;
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2009-07-14 06:33:35 +08:00
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wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL;
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err = dev_change_net_namespace(wdev->netdev, net, "wlan%d");
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if (err)
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break;
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wdev->netdev->features |= NETIF_F_NETNS_LOCAL;
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}
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if (err) {
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/* failed -- clean up to old netns */
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net = wiphy_net(&rdev->wiphy);
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2016-05-03 21:52:04 +08:00
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list_for_each_entry_continue_reverse(wdev,
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&rdev->wiphy.wdev_list,
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2009-07-14 06:33:35 +08:00
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list) {
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2012-06-16 00:00:00 +08:00
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if (!wdev->netdev)
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continue;
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2009-07-14 06:33:35 +08:00
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wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL;
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err = dev_change_net_namespace(wdev->netdev, net,
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"wlan%d");
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WARN_ON(err);
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wdev->netdev->features |= NETIF_F_NETNS_LOCAL;
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}
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2010-08-05 23:45:15 +08:00
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return err;
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2009-07-14 06:33:35 +08:00
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}
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2018-10-27 15:31:24 +08:00
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list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
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if (!wdev->netdev)
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continue;
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nl80211_notify_iface(rdev, wdev, NL80211_CMD_DEL_INTERFACE);
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}
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nl80211_notify_wiphy(rdev, NL80211_CMD_DEL_WIPHY);
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2009-07-14 06:33:35 +08:00
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wiphy_net_set(&rdev->wiphy, net);
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2010-08-05 23:45:15 +08:00
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err = device_rename(&rdev->wiphy.dev, dev_name(&rdev->wiphy.dev));
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WARN_ON(err);
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2018-10-27 15:31:24 +08:00
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nl80211_notify_wiphy(rdev, NL80211_CMD_NEW_WIPHY);
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list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
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if (!wdev->netdev)
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continue;
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nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
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}
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2010-08-05 23:45:15 +08:00
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return 0;
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2009-07-14 06:33:35 +08:00
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}
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2009-06-02 19:01:41 +08:00
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static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data)
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{
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2009-07-07 09:56:12 +08:00
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struct cfg80211_registered_device *rdev = data;
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2009-06-02 19:01:41 +08:00
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2012-06-27 22:19:42 +08:00
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rdev_rfkill_poll(rdev);
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2009-06-02 19:01:41 +08:00
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}
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2013-03-19 22:04:07 +08:00
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void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
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struct wireless_dev *wdev)
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{
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2021-01-22 23:19:43 +08:00
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lockdep_assert_held(&rdev->wiphy.mtx);
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2013-03-19 22:04:07 +08:00
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if (WARN_ON(wdev->iftype != NL80211_IFTYPE_P2P_DEVICE))
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return;
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2016-10-21 03:08:22 +08:00
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if (!wdev_running(wdev))
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2013-03-19 22:04:07 +08:00
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return;
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rdev_stop_p2p_device(rdev, wdev);
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2016-10-21 03:08:22 +08:00
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wdev->is_running = false;
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2013-03-19 22:04:07 +08:00
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rdev->opencount--;
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2014-01-22 17:14:18 +08:00
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if (rdev->scan_req && rdev->scan_req->wdev == wdev) {
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2020-09-18 17:33:13 +08:00
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if (WARN_ON(!rdev->scan_req->notified &&
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(!rdev->int_scan_req ||
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!rdev->int_scan_req->notified)))
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2016-07-05 22:10:13 +08:00
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rdev->scan_req->info.aborted = true;
|
cfg80211: send scan results from work queue
Due to the previous commit, when a scan finishes, it is in theory
possible to hit the following sequence:
1. interface starts being removed
2. scan is cancelled by driver and cfg80211 is notified
3. scan done work is scheduled
4. interface is removed completely, rdev->scan_req is freed,
event sent to userspace but scan done work remains pending
5. new scan is requested on another virtual interface
6. scan done work runs, freeing the still-running scan
To fix this situation, hang on to the scan done message and block
new scans while that is the case, and only send the message from
the work function, regardless of whether the scan_req is already
freed from interface removal. This makes step 5 above impossible
and changes step 6 to be
5. scan done work runs, sending the scan done message
As this can't work for wext, so we send the message immediately,
but this shouldn't be an issue since we still return -EBUSY.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-01-22 17:14:19 +08:00
|
|
|
___cfg80211_scan_done(rdev, false);
|
2014-01-22 17:14:18 +08:00
|
|
|
}
|
2013-03-19 22:04:07 +08:00
|
|
|
}
|
|
|
|
|
2016-09-20 22:31:13 +08:00
|
|
|
void cfg80211_stop_nan(struct cfg80211_registered_device *rdev,
|
|
|
|
struct wireless_dev *wdev)
|
|
|
|
{
|
2021-01-22 23:19:43 +08:00
|
|
|
lockdep_assert_held(&rdev->wiphy.mtx);
|
2016-09-20 22:31:13 +08:00
|
|
|
|
|
|
|
if (WARN_ON(wdev->iftype != NL80211_IFTYPE_NAN))
|
|
|
|
return;
|
|
|
|
|
2016-10-21 03:08:22 +08:00
|
|
|
if (!wdev_running(wdev))
|
2016-09-20 22:31:13 +08:00
|
|
|
return;
|
|
|
|
|
|
|
|
rdev_stop_nan(rdev, wdev);
|
2016-10-21 03:08:22 +08:00
|
|
|
wdev->is_running = false;
|
2016-09-20 22:31:13 +08:00
|
|
|
|
|
|
|
rdev->opencount--;
|
|
|
|
}
|
|
|
|
|
2014-04-30 20:19:04 +08:00
|
|
|
void cfg80211_shutdown_all_interfaces(struct wiphy *wiphy)
|
2009-06-02 19:01:41 +08:00
|
|
|
{
|
2014-04-30 20:19:04 +08:00
|
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
|
2009-06-02 19:01:41 +08:00
|
|
|
struct wireless_dev *wdev;
|
|
|
|
|
2014-04-30 20:19:04 +08:00
|
|
|
ASSERT_RTNL();
|
2013-03-19 22:04:07 +08:00
|
|
|
|
2016-05-03 21:52:04 +08:00
|
|
|
list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
|
2012-06-16 06:19:54 +08:00
|
|
|
if (wdev->netdev) {
|
2012-06-16 00:00:00 +08:00
|
|
|
dev_close(wdev->netdev);
|
2012-06-16 06:19:54 +08:00
|
|
|
continue;
|
|
|
|
}
|
2021-01-22 23:19:43 +08:00
|
|
|
|
2012-06-16 06:19:54 +08:00
|
|
|
/* otherwise, check iftype */
|
2021-01-22 23:19:43 +08:00
|
|
|
|
|
|
|
wiphy_lock(wiphy);
|
|
|
|
|
2012-06-16 06:19:54 +08:00
|
|
|
switch (wdev->iftype) {
|
|
|
|
case NL80211_IFTYPE_P2P_DEVICE:
|
2013-03-19 22:04:07 +08:00
|
|
|
cfg80211_stop_p2p_device(rdev, wdev);
|
2012-06-16 06:19:54 +08:00
|
|
|
break;
|
2016-09-20 22:31:13 +08:00
|
|
|
case NL80211_IFTYPE_NAN:
|
|
|
|
cfg80211_stop_nan(rdev, wdev);
|
|
|
|
break;
|
2012-06-16 06:19:54 +08:00
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
2021-01-22 23:19:43 +08:00
|
|
|
|
|
|
|
wiphy_unlock(wiphy);
|
2012-06-16 06:19:54 +08:00
|
|
|
}
|
2014-04-30 20:19:04 +08:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(cfg80211_shutdown_all_interfaces);
|
2009-06-02 19:01:41 +08:00
|
|
|
|
2014-04-30 20:19:04 +08:00
|
|
|
static int cfg80211_rfkill_set_block(void *data, bool blocked)
|
|
|
|
{
|
|
|
|
struct cfg80211_registered_device *rdev = data;
|
|
|
|
|
|
|
|
if (!blocked)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
rtnl_lock();
|
|
|
|
cfg80211_shutdown_all_interfaces(&rdev->wiphy);
|
2009-06-02 19:01:41 +08:00
|
|
|
rtnl_unlock();
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2019-08-30 19:24:44 +08:00
|
|
|
static void cfg80211_rfkill_block_work(struct work_struct *work)
|
2009-06-02 19:01:41 +08:00
|
|
|
{
|
2009-07-07 09:56:12 +08:00
|
|
|
struct cfg80211_registered_device *rdev;
|
2009-06-02 19:01:41 +08:00
|
|
|
|
2019-08-30 19:24:44 +08:00
|
|
|
rdev = container_of(work, struct cfg80211_registered_device,
|
|
|
|
rfkill_block);
|
|
|
|
cfg80211_rfkill_set_block(rdev, true);
|
2009-06-02 19:01:41 +08:00
|
|
|
}
|
|
|
|
|
2009-07-07 09:56:11 +08:00
|
|
|
static void cfg80211_event_work(struct work_struct *work)
|
|
|
|
{
|
|
|
|
struct cfg80211_registered_device *rdev;
|
|
|
|
|
|
|
|
rdev = container_of(work, struct cfg80211_registered_device,
|
|
|
|
event_work);
|
|
|
|
|
2021-01-22 23:19:43 +08:00
|
|
|
wiphy_lock(&rdev->wiphy);
|
2009-08-21 20:51:05 +08:00
|
|
|
cfg80211_process_rdev_events(rdev);
|
2021-01-22 23:19:43 +08:00
|
|
|
wiphy_unlock(&rdev->wiphy);
|
2009-07-07 09:56:11 +08:00
|
|
|
}
|
|
|
|
|
2014-03-25 00:57:27 +08:00
|
|
|
void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev)
|
|
|
|
{
|
2017-04-26 13:43:41 +08:00
|
|
|
struct wireless_dev *wdev, *tmp;
|
2014-03-25 00:57:27 +08:00
|
|
|
|
|
|
|
ASSERT_RTNL();
|
2021-01-29 01:35:28 +08:00
|
|
|
lockdep_assert_wiphy(&rdev->wiphy);
|
2014-03-25 00:57:27 +08:00
|
|
|
|
2017-04-26 13:43:41 +08:00
|
|
|
list_for_each_entry_safe(wdev, tmp, &rdev->wiphy.wdev_list, list) {
|
|
|
|
if (wdev->nl_owner_dead)
|
|
|
|
rdev_del_virtual_intf(rdev, wdev);
|
2014-03-25 00:57:27 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void cfg80211_destroy_iface_wk(struct work_struct *work)
|
|
|
|
{
|
|
|
|
struct cfg80211_registered_device *rdev;
|
|
|
|
|
|
|
|
rdev = container_of(work, struct cfg80211_registered_device,
|
|
|
|
destroy_work);
|
|
|
|
|
|
|
|
rtnl_lock();
|
2021-01-29 01:35:28 +08:00
|
|
|
wiphy_lock(&rdev->wiphy);
|
2014-03-25 00:57:27 +08:00
|
|
|
cfg80211_destroy_ifaces(rdev);
|
2021-01-29 01:35:28 +08:00
|
|
|
wiphy_unlock(&rdev->wiphy);
|
2014-03-25 00:57:27 +08:00
|
|
|
rtnl_unlock();
|
|
|
|
}
|
|
|
|
|
2014-12-15 19:25:39 +08:00
|
|
|
static void cfg80211_sched_scan_stop_wk(struct work_struct *work)
|
|
|
|
{
|
|
|
|
struct cfg80211_registered_device *rdev;
|
2017-04-21 20:05:00 +08:00
|
|
|
struct cfg80211_sched_scan_request *req, *tmp;
|
2014-12-15 19:25:39 +08:00
|
|
|
|
|
|
|
rdev = container_of(work, struct cfg80211_registered_device,
|
|
|
|
sched_scan_stop_wk);
|
|
|
|
|
|
|
|
rtnl_lock();
|
2017-04-21 20:05:00 +08:00
|
|
|
list_for_each_entry_safe(req, tmp, &rdev->sched_scan_req_list, list) {
|
|
|
|
if (req->nl_owner_dead)
|
|
|
|
cfg80211_stop_sched_scan_req(rdev, req, false);
|
|
|
|
}
|
2014-12-15 19:25:39 +08:00
|
|
|
rtnl_unlock();
|
|
|
|
}
|
|
|
|
|
2017-02-27 19:34:35 +08:00
|
|
|
static void cfg80211_propagate_radar_detect_wk(struct work_struct *work)
|
|
|
|
{
|
|
|
|
struct cfg80211_registered_device *rdev;
|
|
|
|
|
|
|
|
rdev = container_of(work, struct cfg80211_registered_device,
|
|
|
|
propagate_radar_detect_wk);
|
|
|
|
|
|
|
|
rtnl_lock();
|
|
|
|
|
|
|
|
regulatory_propagate_dfs_state(&rdev->wiphy, &rdev->radar_chandef,
|
|
|
|
NL80211_DFS_UNAVAILABLE,
|
|
|
|
NL80211_RADAR_DETECTED);
|
|
|
|
|
|
|
|
rtnl_unlock();
|
|
|
|
}
|
|
|
|
|
|
|
|
static void cfg80211_propagate_cac_done_wk(struct work_struct *work)
|
|
|
|
{
|
|
|
|
struct cfg80211_registered_device *rdev;
|
|
|
|
|
|
|
|
rdev = container_of(work, struct cfg80211_registered_device,
|
|
|
|
propagate_cac_done_wk);
|
|
|
|
|
|
|
|
rtnl_lock();
|
|
|
|
|
|
|
|
regulatory_propagate_dfs_state(&rdev->wiphy, &rdev->cac_done_chandef,
|
|
|
|
NL80211_DFS_AVAILABLE,
|
|
|
|
NL80211_RADAR_CAC_FINISHED);
|
|
|
|
|
|
|
|
rtnl_unlock();
|
|
|
|
}
|
|
|
|
|
2007-04-24 03:20:05 +08:00
|
|
|
/* exported functions */
|
|
|
|
|
2014-10-23 03:23:00 +08:00
|
|
|
struct wiphy *wiphy_new_nm(const struct cfg80211_ops *ops, int sizeof_priv,
|
|
|
|
const char *requested_name)
|
2007-04-24 03:20:05 +08:00
|
|
|
{
|
2013-05-09 03:49:02 +08:00
|
|
|
static atomic_t wiphy_counter = ATOMIC_INIT(0);
|
2010-10-12 02:46:52 +08:00
|
|
|
|
|
|
|
struct cfg80211_registered_device *rdev;
|
2007-04-24 03:20:05 +08:00
|
|
|
int alloc_size;
|
|
|
|
|
2009-07-07 09:56:13 +08:00
|
|
|
WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key));
|
|
|
|
WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc));
|
|
|
|
WARN_ON(ops->connect && !ops->disconnect);
|
|
|
|
WARN_ON(ops->join_ibss && !ops->leave_ibss);
|
|
|
|
WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf);
|
|
|
|
WARN_ON(ops->add_station && !ops->del_station);
|
|
|
|
WARN_ON(ops->add_mpath && !ops->del_mpath);
|
2010-12-03 16:20:44 +08:00
|
|
|
WARN_ON(ops->join_mesh && !ops->leave_mesh);
|
2015-12-17 05:43:35 +08:00
|
|
|
WARN_ON(ops->start_p2p_device && !ops->stop_p2p_device);
|
|
|
|
WARN_ON(ops->start_ap && !ops->stop_ap);
|
|
|
|
WARN_ON(ops->join_ocb && !ops->leave_ocb);
|
|
|
|
WARN_ON(ops->suspend && !ops->resume);
|
|
|
|
WARN_ON(ops->sched_scan_start && !ops->sched_scan_stop);
|
|
|
|
WARN_ON(ops->remain_on_channel && !ops->cancel_remain_on_channel);
|
|
|
|
WARN_ON(ops->tdls_channel_switch && !ops->tdls_cancel_channel_switch);
|
|
|
|
WARN_ON(ops->add_tx_ts && !ops->del_tx_ts);
|
2007-12-19 09:03:29 +08:00
|
|
|
|
2009-07-07 09:56:12 +08:00
|
|
|
alloc_size = sizeof(*rdev) + sizeof_priv;
|
2007-04-24 03:20:05 +08:00
|
|
|
|
2009-07-07 09:56:12 +08:00
|
|
|
rdev = kzalloc(alloc_size, GFP_KERNEL);
|
|
|
|
if (!rdev)
|
2007-04-24 03:20:05 +08:00
|
|
|
return NULL;
|
|
|
|
|
2009-07-07 09:56:12 +08:00
|
|
|
rdev->ops = ops;
|
2007-04-24 03:20:05 +08:00
|
|
|
|
2013-05-09 03:49:02 +08:00
|
|
|
rdev->wiphy_idx = atomic_inc_return(&wiphy_counter);
|
2007-04-27 11:50:35 +08:00
|
|
|
|
2012-12-04 01:23:37 +08:00
|
|
|
if (unlikely(rdev->wiphy_idx < 0)) {
|
2010-10-12 02:46:52 +08:00
|
|
|
/* ugh, wrapped! */
|
2013-05-09 03:49:02 +08:00
|
|
|
atomic_dec(&wiphy_counter);
|
2009-07-07 09:56:12 +08:00
|
|
|
kfree(rdev);
|
2007-04-24 03:20:05 +08:00
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2013-06-05 04:23:36 +08:00
|
|
|
/* atomic_inc_return makes it start at 1, make it start at 0 */
|
|
|
|
rdev->wiphy_idx--;
|
|
|
|
|
2010-10-12 02:46:52 +08:00
|
|
|
/* give it a proper name */
|
2014-10-23 03:23:00 +08:00
|
|
|
if (requested_name && requested_name[0]) {
|
|
|
|
int rv;
|
|
|
|
|
|
|
|
rtnl_lock();
|
|
|
|
rv = cfg80211_dev_check_name(rdev, requested_name);
|
|
|
|
|
|
|
|
if (rv < 0) {
|
|
|
|
rtnl_unlock();
|
|
|
|
goto use_default_name;
|
|
|
|
}
|
|
|
|
|
|
|
|
rv = dev_set_name(&rdev->wiphy.dev, "%s", requested_name);
|
|
|
|
rtnl_unlock();
|
|
|
|
if (rv)
|
|
|
|
goto use_default_name;
|
|
|
|
} else {
|
2018-01-15 16:58:27 +08:00
|
|
|
int rv;
|
|
|
|
|
2014-10-23 03:23:00 +08:00
|
|
|
use_default_name:
|
|
|
|
/* NOTE: This is *probably* safe w/out holding rtnl because of
|
|
|
|
* the restrictions on phy names. Probably this call could
|
|
|
|
* fail if some other part of the kernel (re)named a device
|
|
|
|
* phyX. But, might should add some locking and check return
|
|
|
|
* value, and use a different name if this one exists?
|
|
|
|
*/
|
2018-01-15 16:58:27 +08:00
|
|
|
rv = dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx);
|
|
|
|
if (rv < 0) {
|
|
|
|
kfree(rdev);
|
|
|
|
return NULL;
|
|
|
|
}
|
2014-10-23 03:23:00 +08:00
|
|
|
}
|
2010-10-12 02:46:52 +08:00
|
|
|
|
2021-01-22 23:19:43 +08:00
|
|
|
mutex_init(&rdev->wiphy.mtx);
|
2016-05-03 21:52:04 +08:00
|
|
|
INIT_LIST_HEAD(&rdev->wiphy.wdev_list);
|
2012-10-27 05:49:25 +08:00
|
|
|
INIT_LIST_HEAD(&rdev->beacon_registrations);
|
|
|
|
spin_lock_init(&rdev->beacon_registrations_lock);
|
2009-07-07 09:56:12 +08:00
|
|
|
spin_lock_init(&rdev->bss_lock);
|
|
|
|
INIT_LIST_HEAD(&rdev->bss_list);
|
2017-04-21 20:05:00 +08:00
|
|
|
INIT_LIST_HEAD(&rdev->sched_scan_req_list);
|
2009-07-07 09:56:12 +08:00
|
|
|
INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done);
|
2013-02-09 01:16:19 +08:00
|
|
|
INIT_DELAYED_WORK(&rdev->dfs_update_channels_wk,
|
|
|
|
cfg80211_dfs_channels_update_work);
|
2009-09-30 05:27:28 +08:00
|
|
|
#ifdef CONFIG_CFG80211_WEXT
|
|
|
|
rdev->wiphy.wext = &cfg80211_wext_handler;
|
|
|
|
#endif
|
|
|
|
|
2009-07-07 09:56:12 +08:00
|
|
|
device_initialize(&rdev->wiphy.dev);
|
|
|
|
rdev->wiphy.dev.class = &ieee80211_class;
|
|
|
|
rdev->wiphy.dev.platform_data = rdev;
|
2015-09-19 10:40:14 +08:00
|
|
|
device_enable_async_suspend(&rdev->wiphy.dev);
|
2009-07-07 09:56:12 +08:00
|
|
|
|
2014-03-25 00:57:27 +08:00
|
|
|
INIT_WORK(&rdev->destroy_work, cfg80211_destroy_iface_wk);
|
2014-12-15 19:25:39 +08:00
|
|
|
INIT_WORK(&rdev->sched_scan_stop_wk, cfg80211_sched_scan_stop_wk);
|
2017-04-28 20:40:28 +08:00
|
|
|
INIT_WORK(&rdev->sched_scan_res_wk, cfg80211_sched_scan_results_wk);
|
2017-02-27 19:34:35 +08:00
|
|
|
INIT_WORK(&rdev->propagate_radar_detect_wk,
|
|
|
|
cfg80211_propagate_radar_detect_wk);
|
|
|
|
INIT_WORK(&rdev->propagate_cac_done_wk, cfg80211_propagate_cac_done_wk);
|
2020-06-04 18:04:20 +08:00
|
|
|
INIT_WORK(&rdev->mgmt_registrations_update_wk,
|
|
|
|
cfg80211_mgmt_registrations_update_wk);
|
2014-03-25 00:57:27 +08:00
|
|
|
|
2009-11-19 07:56:28 +08:00
|
|
|
#ifdef CONFIG_CFG80211_DEFAULT_PS
|
|
|
|
rdev->wiphy.flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
|
|
|
|
#endif
|
2009-08-13 05:33:20 +08:00
|
|
|
|
2009-07-14 06:33:35 +08:00
|
|
|
wiphy_net_set(&rdev->wiphy, &init_net);
|
|
|
|
|
2009-07-07 09:56:12 +08:00
|
|
|
rdev->rfkill_ops.set_block = cfg80211_rfkill_set_block;
|
|
|
|
rdev->rfkill = rfkill_alloc(dev_name(&rdev->wiphy.dev),
|
|
|
|
&rdev->wiphy.dev, RFKILL_TYPE_WLAN,
|
|
|
|
&rdev->rfkill_ops, rdev);
|
|
|
|
|
|
|
|
if (!rdev->rfkill) {
|
2019-06-11 04:02:19 +08:00
|
|
|
wiphy_free(&rdev->wiphy);
|
2009-06-02 19:01:41 +08:00
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2019-08-30 19:24:44 +08:00
|
|
|
INIT_WORK(&rdev->rfkill_block, cfg80211_rfkill_block_work);
|
2009-07-07 09:56:12 +08:00
|
|
|
INIT_WORK(&rdev->conn_work, cfg80211_conn_work);
|
|
|
|
INIT_WORK(&rdev->event_work, cfg80211_event_work);
|
2009-06-02 19:01:41 +08:00
|
|
|
|
2009-08-19 01:51:57 +08:00
|
|
|
init_waitqueue_head(&rdev->dev_wait);
|
|
|
|
|
2009-04-21 00:39:05 +08:00
|
|
|
/*
|
|
|
|
* Initialize wiphy parameters to IEEE 802.11 MIB default values.
|
|
|
|
* Fragmentation and RTS threshold are disabled by default with the
|
|
|
|
* special -1 value.
|
|
|
|
*/
|
2009-07-07 09:56:12 +08:00
|
|
|
rdev->wiphy.retry_short = 7;
|
|
|
|
rdev->wiphy.retry_long = 4;
|
|
|
|
rdev->wiphy.frag_threshold = (u32) -1;
|
|
|
|
rdev->wiphy.rts_threshold = (u32) -1;
|
2009-12-22 05:50:47 +08:00
|
|
|
rdev->wiphy.coverage_class = 0;
|
2009-04-21 00:39:05 +08:00
|
|
|
|
2014-05-09 19:11:46 +08:00
|
|
|
rdev->wiphy.max_num_csa_counters = 1;
|
|
|
|
|
2015-10-12 14:51:34 +08:00
|
|
|
rdev->wiphy.max_sched_scan_plans = 1;
|
|
|
|
rdev->wiphy.max_sched_scan_plan_interval = U32_MAX;
|
|
|
|
|
2009-07-07 09:56:12 +08:00
|
|
|
return &rdev->wiphy;
|
2007-04-24 03:20:05 +08:00
|
|
|
}
|
2014-10-23 03:23:00 +08:00
|
|
|
EXPORT_SYMBOL(wiphy_new_nm);
|
2007-04-24 03:20:05 +08:00
|
|
|
|
2011-05-13 16:58:57 +08:00
|
|
|
static int wiphy_verify_combinations(struct wiphy *wiphy)
|
|
|
|
{
|
|
|
|
const struct ieee80211_iface_combination *c;
|
|
|
|
int i, j;
|
|
|
|
|
|
|
|
for (i = 0; i < wiphy->n_iface_combinations; i++) {
|
|
|
|
u32 cnt = 0;
|
|
|
|
u16 all_iftypes = 0;
|
|
|
|
|
|
|
|
c = &wiphy->iface_combinations[i];
|
|
|
|
|
2013-01-08 21:04:07 +08:00
|
|
|
/*
|
|
|
|
* Combinations with just one interface aren't real,
|
|
|
|
* however we make an exception for DFS.
|
|
|
|
*/
|
|
|
|
if (WARN_ON((c->max_interfaces < 2) && !c->radar_detect_widths))
|
2011-05-13 16:58:57 +08:00
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
/* Need at least one channel */
|
|
|
|
if (WARN_ON(!c->num_different_channels))
|
|
|
|
return -EINVAL;
|
|
|
|
|
2012-06-29 18:47:07 +08:00
|
|
|
/*
|
|
|
|
* Put a sane limit on maximum number of different
|
|
|
|
* channels to simplify channel accounting code.
|
|
|
|
*/
|
|
|
|
if (WARN_ON(c->num_different_channels >
|
|
|
|
CFG80211_MAX_NUM_DIFFERENT_CHANNELS))
|
|
|
|
return -EINVAL;
|
|
|
|
|
2013-01-08 21:04:07 +08:00
|
|
|
/* DFS only works on one channel. */
|
|
|
|
if (WARN_ON(c->radar_detect_widths &&
|
|
|
|
(c->num_different_channels > 1)))
|
|
|
|
return -EINVAL;
|
|
|
|
|
2011-05-13 16:58:57 +08:00
|
|
|
if (WARN_ON(!c->n_limits))
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
for (j = 0; j < c->n_limits; j++) {
|
|
|
|
u16 types = c->limits[j].types;
|
|
|
|
|
2014-02-27 17:07:21 +08:00
|
|
|
/* interface types shouldn't overlap */
|
2011-05-13 16:58:57 +08:00
|
|
|
if (WARN_ON(types & all_iftypes))
|
|
|
|
return -EINVAL;
|
|
|
|
all_iftypes |= types;
|
|
|
|
|
|
|
|
if (WARN_ON(!c->limits[j].max))
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
/* Shouldn't list software iftypes in combinations! */
|
|
|
|
if (WARN_ON(wiphy->software_iftypes & types))
|
|
|
|
return -EINVAL;
|
|
|
|
|
2012-06-16 06:19:54 +08:00
|
|
|
/* Only a single P2P_DEVICE can be allowed */
|
|
|
|
if (WARN_ON(types & BIT(NL80211_IFTYPE_P2P_DEVICE) &&
|
|
|
|
c->limits[j].max > 1))
|
|
|
|
return -EINVAL;
|
|
|
|
|
2016-09-20 22:31:13 +08:00
|
|
|
/* Only a single NAN can be allowed */
|
|
|
|
if (WARN_ON(types & BIT(NL80211_IFTYPE_NAN) &&
|
|
|
|
c->limits[j].max > 1))
|
|
|
|
return -EINVAL;
|
|
|
|
|
2016-10-21 20:25:12 +08:00
|
|
|
/*
|
|
|
|
* This isn't well-defined right now. If you have an
|
|
|
|
* IBSS interface, then its beacon interval may change
|
|
|
|
* by joining other networks, and nothing prevents it
|
|
|
|
* from doing that.
|
|
|
|
* So technically we probably shouldn't even allow AP
|
|
|
|
* and IBSS in the same interface, but it seems that
|
|
|
|
* some drivers support that, possibly only with fixed
|
|
|
|
* beacon intervals for IBSS.
|
|
|
|
*/
|
|
|
|
if (WARN_ON(types & BIT(NL80211_IFTYPE_ADHOC) &&
|
|
|
|
c->beacon_int_min_gcd)) {
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2011-05-13 16:58:57 +08:00
|
|
|
cnt += c->limits[j].max;
|
|
|
|
/*
|
|
|
|
* Don't advertise an unsupported type
|
|
|
|
* in a combination.
|
|
|
|
*/
|
|
|
|
if (WARN_ON((wiphy->interface_modes & types) != types))
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2016-10-18 16:28:57 +08:00
|
|
|
if (WARN_ON(all_iftypes & BIT(NL80211_IFTYPE_WDS)))
|
|
|
|
return -EINVAL;
|
|
|
|
|
2011-05-13 16:58:57 +08:00
|
|
|
/* You can't even choose that many! */
|
|
|
|
if (WARN_ON(cnt < c->max_interfaces))
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2007-04-24 03:20:05 +08:00
|
|
|
int wiphy_register(struct wiphy *wiphy)
|
|
|
|
{
|
2014-04-21 12:53:03 +08:00
|
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
|
2007-04-24 03:20:05 +08:00
|
|
|
int res;
|
2016-04-12 21:56:15 +08:00
|
|
|
enum nl80211_band band;
|
2008-01-25 02:38:38 +08:00
|
|
|
struct ieee80211_supported_band *sband;
|
|
|
|
bool have_band = false;
|
|
|
|
int i;
|
2008-08-30 07:26:43 +08:00
|
|
|
u16 ifmodes = wiphy->interface_modes;
|
|
|
|
|
2012-06-27 15:23:48 +08:00
|
|
|
#ifdef CONFIG_PM
|
2013-06-03 23:25:34 +08:00
|
|
|
if (WARN_ON(wiphy->wowlan &&
|
|
|
|
(wiphy->wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
|
|
|
|
!(wiphy->wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY)))
|
|
|
|
return -EINVAL;
|
|
|
|
if (WARN_ON(wiphy->wowlan &&
|
|
|
|
!wiphy->wowlan->flags && !wiphy->wowlan->n_patterns &&
|
|
|
|
!wiphy->wowlan->tcp))
|
2011-07-13 16:48:55 +08:00
|
|
|
return -EINVAL;
|
2012-06-27 15:23:48 +08:00
|
|
|
#endif
|
2014-11-19 18:54:26 +08:00
|
|
|
if (WARN_ON((wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) &&
|
|
|
|
(!rdev->ops->tdls_channel_switch ||
|
|
|
|
!rdev->ops->tdls_cancel_channel_switch)))
|
|
|
|
return -EINVAL;
|
2011-07-13 16:48:55 +08:00
|
|
|
|
2016-09-20 22:31:13 +08:00
|
|
|
if (WARN_ON((wiphy->interface_modes & BIT(NL80211_IFTYPE_NAN)) &&
|
2016-09-20 22:31:15 +08:00
|
|
|
(!rdev->ops->start_nan || !rdev->ops->stop_nan ||
|
2017-02-08 21:00:34 +08:00
|
|
|
!rdev->ops->add_nan_func || !rdev->ops->del_nan_func ||
|
|
|
|
!(wiphy->nan_supported_bands & BIT(NL80211_BAND_2GHZ)))))
|
2016-09-20 22:31:13 +08:00
|
|
|
return -EINVAL;
|
|
|
|
|
2016-10-18 16:28:57 +08:00
|
|
|
if (WARN_ON(wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS)))
|
|
|
|
return -EINVAL;
|
|
|
|
|
cfg80211: add peer measurement with FTM initiator API
Add a new "peer measurement" API, that can be used to measure
certain things related to a peer. Right now, only implement
FTM (flight time measurement) over it, but the idea is that
it'll be extensible to also support measuring the necessary
things to calculate e.g. angle-of-arrival for WiGig.
The API is structured to have a generic list of peers and
channels to measure with/on, and then for each of those a
set of measurements (again, only FTM right now) to perform.
Results are sent to the requesting socket, including a final
complete message.
Closing the controlling netlink socket will abort a running
measurement.
v3:
- add a bit to report "final" for partial results
- remove list keeping etc. and just unicast out the results
to the requester (big code reduction ...)
- also send complete message unicast, and as a result
remove the multicast group
- separate out struct cfg80211_pmsr_ftm_request_peer
from struct cfg80211_pmsr_request_peer
- document timeout == 0 if no timeout
- disallow setting timeout nl80211 attribute to 0,
must not include attribute for no timeout
- make MAC address randomization optional
- change num bursts exponent default to 0 (1 burst, rather
rather than the old default of 15==don't care)
v4:
- clarify NL80211_ATTR_TIMEOUT documentation
v5:
- remove unnecessary nl80211 multicast/family changes
- remove partial results bit/flag, final is sufficient
- add max_bursts_exponent, max_ftms_per_burst to capability
- rename "frames per burst" -> "FTMs per burst"
v6:
- rename cfg80211_pmsr_free_wdev() to cfg80211_pmsr_wdev_down()
and call it in leave, so the device can't go down with any
pending measurements
v7:
- wording fixes (Lior)
- fix ftm.max_bursts_exponent to allow having the limit of 0 (Lior)
v8:
- copyright statements
- minor coding style fixes
- fix error path leak
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-09-10 19:29:12 +08:00
|
|
|
if (WARN_ON(wiphy->pmsr_capa && !wiphy->pmsr_capa->ftm.supported))
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
if (wiphy->pmsr_capa && wiphy->pmsr_capa->ftm.supported) {
|
|
|
|
if (WARN_ON(!wiphy->pmsr_capa->ftm.asap &&
|
|
|
|
!wiphy->pmsr_capa->ftm.non_asap))
|
|
|
|
return -EINVAL;
|
|
|
|
if (WARN_ON(!wiphy->pmsr_capa->ftm.preambles ||
|
|
|
|
!wiphy->pmsr_capa->ftm.bandwidths))
|
|
|
|
return -EINVAL;
|
|
|
|
if (WARN_ON(wiphy->pmsr_capa->ftm.preambles &
|
|
|
|
~(BIT(NL80211_PREAMBLE_LEGACY) |
|
|
|
|
BIT(NL80211_PREAMBLE_HT) |
|
|
|
|
BIT(NL80211_PREAMBLE_VHT) |
|
2020-01-31 19:12:38 +08:00
|
|
|
BIT(NL80211_PREAMBLE_HE) |
|
cfg80211: add peer measurement with FTM initiator API
Add a new "peer measurement" API, that can be used to measure
certain things related to a peer. Right now, only implement
FTM (flight time measurement) over it, but the idea is that
it'll be extensible to also support measuring the necessary
things to calculate e.g. angle-of-arrival for WiGig.
The API is structured to have a generic list of peers and
channels to measure with/on, and then for each of those a
set of measurements (again, only FTM right now) to perform.
Results are sent to the requesting socket, including a final
complete message.
Closing the controlling netlink socket will abort a running
measurement.
v3:
- add a bit to report "final" for partial results
- remove list keeping etc. and just unicast out the results
to the requester (big code reduction ...)
- also send complete message unicast, and as a result
remove the multicast group
- separate out struct cfg80211_pmsr_ftm_request_peer
from struct cfg80211_pmsr_request_peer
- document timeout == 0 if no timeout
- disallow setting timeout nl80211 attribute to 0,
must not include attribute for no timeout
- make MAC address randomization optional
- change num bursts exponent default to 0 (1 burst, rather
rather than the old default of 15==don't care)
v4:
- clarify NL80211_ATTR_TIMEOUT documentation
v5:
- remove unnecessary nl80211 multicast/family changes
- remove partial results bit/flag, final is sufficient
- add max_bursts_exponent, max_ftms_per_burst to capability
- rename "frames per burst" -> "FTMs per burst"
v6:
- rename cfg80211_pmsr_free_wdev() to cfg80211_pmsr_wdev_down()
and call it in leave, so the device can't go down with any
pending measurements
v7:
- wording fixes (Lior)
- fix ftm.max_bursts_exponent to allow having the limit of 0 (Lior)
v8:
- copyright statements
- minor coding style fixes
- fix error path leak
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-09-10 19:29:12 +08:00
|
|
|
BIT(NL80211_PREAMBLE_DMG))))
|
|
|
|
return -EINVAL;
|
2020-01-31 19:12:38 +08:00
|
|
|
if (WARN_ON((wiphy->pmsr_capa->ftm.trigger_based ||
|
|
|
|
wiphy->pmsr_capa->ftm.non_trigger_based) &&
|
|
|
|
!(wiphy->pmsr_capa->ftm.preambles &
|
|
|
|
BIT(NL80211_PREAMBLE_HE))))
|
|
|
|
return -EINVAL;
|
cfg80211: add peer measurement with FTM initiator API
Add a new "peer measurement" API, that can be used to measure
certain things related to a peer. Right now, only implement
FTM (flight time measurement) over it, but the idea is that
it'll be extensible to also support measuring the necessary
things to calculate e.g. angle-of-arrival for WiGig.
The API is structured to have a generic list of peers and
channels to measure with/on, and then for each of those a
set of measurements (again, only FTM right now) to perform.
Results are sent to the requesting socket, including a final
complete message.
Closing the controlling netlink socket will abort a running
measurement.
v3:
- add a bit to report "final" for partial results
- remove list keeping etc. and just unicast out the results
to the requester (big code reduction ...)
- also send complete message unicast, and as a result
remove the multicast group
- separate out struct cfg80211_pmsr_ftm_request_peer
from struct cfg80211_pmsr_request_peer
- document timeout == 0 if no timeout
- disallow setting timeout nl80211 attribute to 0,
must not include attribute for no timeout
- make MAC address randomization optional
- change num bursts exponent default to 0 (1 burst, rather
rather than the old default of 15==don't care)
v4:
- clarify NL80211_ATTR_TIMEOUT documentation
v5:
- remove unnecessary nl80211 multicast/family changes
- remove partial results bit/flag, final is sufficient
- add max_bursts_exponent, max_ftms_per_burst to capability
- rename "frames per burst" -> "FTMs per burst"
v6:
- rename cfg80211_pmsr_free_wdev() to cfg80211_pmsr_wdev_down()
and call it in leave, so the device can't go down with any
pending measurements
v7:
- wording fixes (Lior)
- fix ftm.max_bursts_exponent to allow having the limit of 0 (Lior)
v8:
- copyright statements
- minor coding style fixes
- fix error path leak
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-09-10 19:29:12 +08:00
|
|
|
if (WARN_ON(wiphy->pmsr_capa->ftm.bandwidths &
|
|
|
|
~(BIT(NL80211_CHAN_WIDTH_20_NOHT) |
|
|
|
|
BIT(NL80211_CHAN_WIDTH_20) |
|
|
|
|
BIT(NL80211_CHAN_WIDTH_40) |
|
|
|
|
BIT(NL80211_CHAN_WIDTH_80) |
|
|
|
|
BIT(NL80211_CHAN_WIDTH_80P80) |
|
|
|
|
BIT(NL80211_CHAN_WIDTH_160) |
|
|
|
|
BIT(NL80211_CHAN_WIDTH_5) |
|
|
|
|
BIT(NL80211_CHAN_WIDTH_10))))
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2014-11-27 15:44:55 +08:00
|
|
|
/*
|
|
|
|
* if a wiphy has unsupported modes for regulatory channel enforcement,
|
|
|
|
* opt-out of enforcement checking
|
|
|
|
*/
|
|
|
|
if (wiphy->interface_modes & ~(BIT(NL80211_IFTYPE_STATION) |
|
|
|
|
BIT(NL80211_IFTYPE_P2P_CLIENT) |
|
|
|
|
BIT(NL80211_IFTYPE_AP) |
|
|
|
|
BIT(NL80211_IFTYPE_P2P_GO) |
|
|
|
|
BIT(NL80211_IFTYPE_ADHOC) |
|
|
|
|
BIT(NL80211_IFTYPE_P2P_DEVICE) |
|
2016-09-20 22:31:13 +08:00
|
|
|
BIT(NL80211_IFTYPE_NAN) |
|
2014-11-27 15:44:55 +08:00
|
|
|
BIT(NL80211_IFTYPE_AP_VLAN) |
|
|
|
|
BIT(NL80211_IFTYPE_MONITOR)))
|
|
|
|
wiphy->regulatory_flags |= REGULATORY_IGNORE_STALE_KICKOFF;
|
|
|
|
|
2014-12-16 01:26:00 +08:00
|
|
|
if (WARN_ON((wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) &&
|
|
|
|
(wiphy->regulatory_flags &
|
|
|
|
(REGULATORY_CUSTOM_REG |
|
|
|
|
REGULATORY_STRICT_REG |
|
|
|
|
REGULATORY_COUNTRY_IE_FOLLOW_POWER |
|
|
|
|
REGULATORY_COUNTRY_IE_IGNORE))))
|
|
|
|
return -EINVAL;
|
|
|
|
|
2013-06-29 02:51:26 +08:00
|
|
|
if (WARN_ON(wiphy->coalesce &&
|
|
|
|
(!wiphy->coalesce->n_rules ||
|
|
|
|
!wiphy->coalesce->n_patterns) &&
|
|
|
|
(!wiphy->coalesce->pattern_min_len ||
|
|
|
|
wiphy->coalesce->pattern_min_len >
|
|
|
|
wiphy->coalesce->pattern_max_len)))
|
|
|
|
return -EINVAL;
|
|
|
|
|
2011-11-07 19:39:33 +08:00
|
|
|
if (WARN_ON(wiphy->ap_sme_capa &&
|
|
|
|
!(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME)))
|
|
|
|
return -EINVAL;
|
|
|
|
|
2010-01-20 19:02:33 +08:00
|
|
|
if (WARN_ON(wiphy->addresses && !wiphy->n_addresses))
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
if (WARN_ON(wiphy->addresses &&
|
|
|
|
!is_zero_ether_addr(wiphy->perm_addr) &&
|
|
|
|
memcmp(wiphy->perm_addr, wiphy->addresses[0].addr,
|
|
|
|
ETH_ALEN)))
|
|
|
|
return -EINVAL;
|
|
|
|
|
2013-01-18 13:48:45 +08:00
|
|
|
if (WARN_ON(wiphy->max_acl_mac_addrs &&
|
|
|
|
(!(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME) ||
|
|
|
|
!rdev->ops->set_mac_acl)))
|
|
|
|
return -EINVAL;
|
|
|
|
|
2016-03-03 03:37:18 +08:00
|
|
|
/* assure only valid behaviours are flagged by driver
|
|
|
|
* hence subtract 2 as bit 0 is invalid.
|
|
|
|
*/
|
|
|
|
if (WARN_ON(wiphy->bss_select_support &&
|
|
|
|
(wiphy->bss_select_support & ~(BIT(__NL80211_BSS_SELECT_ATTR_AFTER_LAST) - 2))))
|
|
|
|
return -EINVAL;
|
|
|
|
|
2017-06-09 20:08:43 +08:00
|
|
|
if (WARN_ON(wiphy_ext_feature_isset(&rdev->wiphy,
|
|
|
|
NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X) &&
|
|
|
|
(!rdev->ops->set_pmk || !rdev->ops->del_pmk)))
|
|
|
|
return -EINVAL;
|
|
|
|
|
2018-05-22 16:19:08 +08:00
|
|
|
if (WARN_ON(!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
|
|
|
|
rdev->ops->update_connect_params))
|
|
|
|
return -EINVAL;
|
|
|
|
|
2010-01-20 19:02:33 +08:00
|
|
|
if (wiphy->addresses)
|
|
|
|
memcpy(wiphy->perm_addr, wiphy->addresses[0].addr, ETH_ALEN);
|
|
|
|
|
2008-08-30 07:26:43 +08:00
|
|
|
/* sanity check ifmodes */
|
|
|
|
WARN_ON(!ifmodes);
|
2010-08-12 21:38:38 +08:00
|
|
|
ifmodes &= ((1 << NUM_NL80211_IFTYPES) - 1) & ~1;
|
2008-08-30 07:26:43 +08:00
|
|
|
if (WARN_ON(ifmodes != wiphy->interface_modes))
|
|
|
|
wiphy->interface_modes = ifmodes;
|
2008-01-25 02:38:38 +08:00
|
|
|
|
2011-05-13 16:58:57 +08:00
|
|
|
res = wiphy_verify_combinations(wiphy);
|
|
|
|
if (res)
|
|
|
|
return res;
|
|
|
|
|
2008-01-25 02:38:38 +08:00
|
|
|
/* sanity check supported bands/channels */
|
2016-04-12 21:56:15 +08:00
|
|
|
for (band = 0; band < NUM_NL80211_BANDS; band++) {
|
2018-06-09 14:14:42 +08:00
|
|
|
u16 types = 0;
|
2020-05-29 03:34:42 +08:00
|
|
|
bool have_he = false;
|
2018-06-09 14:14:42 +08:00
|
|
|
|
2008-01-25 02:38:38 +08:00
|
|
|
sband = wiphy->bands[band];
|
|
|
|
if (!sband)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
sband->band = band;
|
2012-07-02 14:32:32 +08:00
|
|
|
if (WARN_ON(!sband->n_channels))
|
|
|
|
return -EINVAL;
|
|
|
|
/*
|
2020-06-02 14:22:47 +08:00
|
|
|
* on 60GHz or sub-1Ghz band, there are no legacy rates, so
|
2012-07-02 14:32:32 +08:00
|
|
|
* n_bitrates is 0
|
|
|
|
*/
|
2020-06-02 14:22:47 +08:00
|
|
|
if (WARN_ON((band != NL80211_BAND_60GHZ &&
|
|
|
|
band != NL80211_BAND_S1GHZ) &&
|
2012-07-02 14:32:32 +08:00
|
|
|
!sband->n_bitrates))
|
2009-01-21 22:13:48 +08:00
|
|
|
return -EINVAL;
|
|
|
|
|
2020-05-29 03:34:41 +08:00
|
|
|
if (WARN_ON(band == NL80211_BAND_6GHZ &&
|
|
|
|
(sband->ht_cap.ht_supported ||
|
|
|
|
sband->vht_cap.vht_supported)))
|
|
|
|
return -EINVAL;
|
|
|
|
|
2011-04-22 05:10:27 +08:00
|
|
|
/*
|
|
|
|
* Since cfg80211_disable_40mhz_24ghz is global, we can
|
|
|
|
* modify the sband's ht data even if the driver uses a
|
|
|
|
* global structure for that.
|
|
|
|
*/
|
|
|
|
if (cfg80211_disable_40mhz_24ghz &&
|
2016-04-12 21:56:15 +08:00
|
|
|
band == NL80211_BAND_2GHZ &&
|
2011-04-22 05:10:27 +08:00
|
|
|
sband->ht_cap.ht_supported) {
|
|
|
|
sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
|
|
|
|
sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SGI_40;
|
|
|
|
}
|
|
|
|
|
2009-01-21 22:13:48 +08:00
|
|
|
/*
|
|
|
|
* Since we use a u32 for rate bitmaps in
|
|
|
|
* ieee80211_get_response_rate, we cannot
|
|
|
|
* have more than 32 legacy rates.
|
|
|
|
*/
|
|
|
|
if (WARN_ON(sband->n_bitrates > 32))
|
2008-01-25 02:38:38 +08:00
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
for (i = 0; i < sband->n_channels; i++) {
|
|
|
|
sband->channels[i].orig_flags =
|
|
|
|
sband->channels[i].flags;
|
2012-10-17 19:56:19 +08:00
|
|
|
sband->channels[i].orig_mag = INT_MAX;
|
2008-01-25 02:38:38 +08:00
|
|
|
sband->channels[i].orig_mpwr =
|
|
|
|
sband->channels[i].max_power;
|
|
|
|
sband->channels[i].band = band;
|
2020-04-24 18:01:04 +08:00
|
|
|
|
|
|
|
if (WARN_ON(sband->channels[i].freq_offset >= 1000))
|
|
|
|
return -EINVAL;
|
2008-01-25 02:38:38 +08:00
|
|
|
}
|
|
|
|
|
2018-06-09 14:14:42 +08:00
|
|
|
for (i = 0; i < sband->n_iftype_data; i++) {
|
|
|
|
const struct ieee80211_sband_iftype_data *iftd;
|
|
|
|
|
|
|
|
iftd = &sband->iftype_data[i];
|
|
|
|
|
|
|
|
if (WARN_ON(!iftd->types_mask))
|
|
|
|
return -EINVAL;
|
|
|
|
if (WARN_ON(types & iftd->types_mask))
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
/* at least one piece of information must be present */
|
|
|
|
if (WARN_ON(!iftd->he_cap.has_he))
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
types |= iftd->types_mask;
|
2020-05-29 03:34:42 +08:00
|
|
|
|
|
|
|
if (i == 0)
|
|
|
|
have_he = iftd->he_cap.has_he;
|
|
|
|
else
|
|
|
|
have_he = have_he &&
|
|
|
|
iftd->he_cap.has_he;
|
2018-06-09 14:14:42 +08:00
|
|
|
}
|
|
|
|
|
2020-05-29 03:34:42 +08:00
|
|
|
if (WARN_ON(!have_he && band == NL80211_BAND_6GHZ))
|
|
|
|
return -EINVAL;
|
|
|
|
|
2008-01-25 02:38:38 +08:00
|
|
|
have_band = true;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!have_band) {
|
|
|
|
WARN_ON(1);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2019-05-28 16:56:03 +08:00
|
|
|
for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
|
|
|
|
/*
|
|
|
|
* Validate we have a policy (can be explicitly set to
|
|
|
|
* VENDOR_CMD_RAW_DATA which is non-NULL) and also that
|
|
|
|
* we have at least one of doit/dumpit.
|
|
|
|
*/
|
|
|
|
if (WARN_ON(!rdev->wiphy.vendor_commands[i].policy))
|
|
|
|
return -EINVAL;
|
|
|
|
if (WARN_ON(!rdev->wiphy.vendor_commands[i].doit &&
|
|
|
|
!rdev->wiphy.vendor_commands[i].dumpit))
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2012-06-27 15:23:48 +08:00
|
|
|
#ifdef CONFIG_PM
|
2013-06-03 23:25:34 +08:00
|
|
|
if (WARN_ON(rdev->wiphy.wowlan && rdev->wiphy.wowlan->n_patterns &&
|
|
|
|
(!rdev->wiphy.wowlan->pattern_min_len ||
|
|
|
|
rdev->wiphy.wowlan->pattern_min_len >
|
|
|
|
rdev->wiphy.wowlan->pattern_max_len)))
|
|
|
|
return -EINVAL;
|
2012-06-27 15:23:48 +08:00
|
|
|
#endif
|
2011-05-04 21:37:28 +08:00
|
|
|
|
2008-01-25 02:38:38 +08:00
|
|
|
/* check and set up bitrates */
|
|
|
|
ieee80211_set_bitrate_flags(wiphy);
|
|
|
|
|
2013-10-26 23:14:38 +08:00
|
|
|
rdev->wiphy.features |= NL80211_FEATURE_SCAN_FLUSH;
|
|
|
|
|
2013-09-27 02:03:45 +08:00
|
|
|
rtnl_lock();
|
2009-07-07 09:56:12 +08:00
|
|
|
res = device_add(&rdev->wiphy.dev);
|
2010-08-31 05:36:40 +08:00
|
|
|
if (res) {
|
2013-09-27 02:03:45 +08:00
|
|
|
rtnl_unlock();
|
2010-08-31 05:36:40 +08:00
|
|
|
return res;
|
|
|
|
}
|
2009-06-02 19:01:41 +08:00
|
|
|
|
2009-06-10 22:50:29 +08:00
|
|
|
/* set up regulatory info */
|
2012-07-13 02:49:18 +08:00
|
|
|
wiphy_regulatory_register(wiphy);
|
2009-06-10 22:50:29 +08:00
|
|
|
|
2010-01-17 22:49:02 +08:00
|
|
|
list_add_rcu(&rdev->list, &cfg80211_rdev_list);
|
2009-08-07 22:17:38 +08:00
|
|
|
cfg80211_rdev_list_generation++;
|
2007-04-24 03:20:05 +08:00
|
|
|
|
|
|
|
/* add to debugfs */
|
2019-07-03 15:01:42 +08:00
|
|
|
rdev->wiphy.debugfsdir = debugfs_create_dir(wiphy_name(&rdev->wiphy),
|
|
|
|
ieee80211_debugfs_dir);
|
2007-04-24 03:20:05 +08:00
|
|
|
|
2014-08-13 21:04:51 +08:00
|
|
|
cfg80211_debugfs_rdev_add(rdev);
|
|
|
|
nl80211_notify_wiphy(rdev, NL80211_CMD_NEW_WIPHY);
|
|
|
|
|
2013-11-12 05:15:29 +08:00
|
|
|
if (wiphy->regulatory_flags & REGULATORY_CUSTOM_REG) {
|
2009-03-10 10:07:42 +08:00
|
|
|
struct regulatory_request request;
|
|
|
|
|
|
|
|
request.wiphy_idx = get_wiphy_idx(wiphy);
|
|
|
|
request.initiator = NL80211_REGDOM_SET_BY_DRIVER;
|
|
|
|
request.alpha2[0] = '9';
|
|
|
|
request.alpha2[1] = '9';
|
|
|
|
|
|
|
|
nl80211_send_reg_change_event(&request);
|
|
|
|
}
|
|
|
|
|
2016-05-16 13:11:04 +08:00
|
|
|
/* Check that nobody globally advertises any capabilities they do not
|
|
|
|
* advertise on all possible interface types.
|
|
|
|
*/
|
|
|
|
if (wiphy->extended_capabilities_len &&
|
|
|
|
wiphy->num_iftype_ext_capab &&
|
|
|
|
wiphy->iftype_ext_capab) {
|
|
|
|
u8 supported_on_all, j;
|
|
|
|
const struct wiphy_iftype_ext_capab *capab;
|
|
|
|
|
|
|
|
capab = wiphy->iftype_ext_capab;
|
|
|
|
for (j = 0; j < wiphy->extended_capabilities_len; j++) {
|
|
|
|
if (capab[0].extended_capabilities_len > j)
|
|
|
|
supported_on_all =
|
|
|
|
capab[0].extended_capabilities[j];
|
|
|
|
else
|
|
|
|
supported_on_all = 0x00;
|
|
|
|
for (i = 1; i < wiphy->num_iftype_ext_capab; i++) {
|
|
|
|
if (j >= capab[i].extended_capabilities_len) {
|
|
|
|
supported_on_all = 0x00;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
supported_on_all &=
|
|
|
|
capab[i].extended_capabilities[j];
|
|
|
|
}
|
|
|
|
if (WARN_ON(wiphy->extended_capabilities[j] &
|
|
|
|
~supported_on_all))
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2011-08-12 20:00:59 +08:00
|
|
|
rdev->wiphy.registered = true;
|
|
|
|
rtnl_unlock();
|
2013-09-27 02:03:45 +08:00
|
|
|
|
|
|
|
res = rfkill_register(rdev->rfkill);
|
|
|
|
if (res) {
|
|
|
|
rfkill_destroy(rdev->rfkill);
|
|
|
|
rdev->rfkill = NULL;
|
|
|
|
wiphy_unregister(&rdev->wiphy);
|
|
|
|
return res;
|
|
|
|
}
|
|
|
|
|
2009-06-10 22:50:29 +08:00
|
|
|
return 0;
|
2007-04-24 03:20:05 +08:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(wiphy_register);
|
|
|
|
|
2009-06-02 19:01:41 +08:00
|
|
|
void wiphy_rfkill_start_polling(struct wiphy *wiphy)
|
|
|
|
{
|
2014-04-21 12:53:03 +08:00
|
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
|
2009-06-02 19:01:41 +08:00
|
|
|
|
2009-07-07 09:56:12 +08:00
|
|
|
if (!rdev->ops->rfkill_poll)
|
2009-06-02 19:01:41 +08:00
|
|
|
return;
|
2009-07-07 09:56:12 +08:00
|
|
|
rdev->rfkill_ops.poll = cfg80211_rfkill_poll;
|
|
|
|
rfkill_resume_polling(rdev->rfkill);
|
2009-06-02 19:01:41 +08:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(wiphy_rfkill_start_polling);
|
|
|
|
|
|
|
|
void wiphy_rfkill_stop_polling(struct wiphy *wiphy)
|
|
|
|
{
|
2014-04-21 12:53:03 +08:00
|
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
|
2009-06-02 19:01:41 +08:00
|
|
|
|
2009-07-07 09:56:12 +08:00
|
|
|
rfkill_pause_polling(rdev->rfkill);
|
2009-06-02 19:01:41 +08:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(wiphy_rfkill_stop_polling);
|
|
|
|
|
2007-04-24 03:20:05 +08:00
|
|
|
void wiphy_unregister(struct wiphy *wiphy)
|
|
|
|
{
|
2014-04-21 12:53:03 +08:00
|
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
|
2007-04-24 03:20:05 +08:00
|
|
|
|
2009-08-19 01:51:57 +08:00
|
|
|
wait_event(rdev->dev_wait, ({
|
|
|
|
int __count;
|
2021-01-22 23:19:43 +08:00
|
|
|
wiphy_lock(&rdev->wiphy);
|
2009-08-19 01:51:57 +08:00
|
|
|
__count = rdev->opencount;
|
2021-01-22 23:19:43 +08:00
|
|
|
wiphy_unlock(&rdev->wiphy);
|
2012-05-08 17:38:53 +08:00
|
|
|
__count == 0; }));
|
2009-08-19 01:51:57 +08:00
|
|
|
|
2013-09-27 02:03:45 +08:00
|
|
|
if (rdev->rfkill)
|
|
|
|
rfkill_unregister(rdev->rfkill);
|
2013-06-05 01:21:08 +08:00
|
|
|
|
2013-05-09 03:45:15 +08:00
|
|
|
rtnl_lock();
|
2021-01-22 23:19:43 +08:00
|
|
|
wiphy_lock(&rdev->wiphy);
|
2014-05-26 19:52:25 +08:00
|
|
|
nl80211_notify_wiphy(rdev, NL80211_CMD_DEL_WIPHY);
|
2013-05-09 03:45:15 +08:00
|
|
|
rdev->wiphy.registered = false;
|
|
|
|
|
2016-05-03 21:52:04 +08:00
|
|
|
WARN_ON(!list_empty(&rdev->wiphy.wdev_list));
|
2009-08-19 01:51:57 +08:00
|
|
|
|
|
|
|
/*
|
|
|
|
* First remove the hardware from everywhere, this makes
|
|
|
|
* it impossible to find from userspace.
|
|
|
|
*/
|
2009-10-27 19:59:03 +08:00
|
|
|
debugfs_remove_recursive(rdev->wiphy.debugfsdir);
|
2010-01-17 22:49:02 +08:00
|
|
|
list_del_rcu(&rdev->list);
|
|
|
|
synchronize_rcu();
|
2007-04-27 11:51:12 +08:00
|
|
|
|
2012-07-13 02:49:19 +08:00
|
|
|
/*
|
|
|
|
* If this device got a regulatory hint tell core its
|
|
|
|
* free to listen now to a new shiny device regulatory hint
|
|
|
|
*/
|
|
|
|
wiphy_regulatory_deregister(wiphy);
|
2008-11-13 06:22:02 +08:00
|
|
|
|
2009-08-07 22:17:38 +08:00
|
|
|
cfg80211_rdev_list_generation++;
|
2009-07-07 09:56:12 +08:00
|
|
|
device_del(&rdev->wiphy.dev);
|
2007-04-24 03:20:05 +08:00
|
|
|
|
2021-01-22 23:19:43 +08:00
|
|
|
wiphy_unlock(&rdev->wiphy);
|
2013-05-09 03:45:15 +08:00
|
|
|
rtnl_unlock();
|
2009-07-13 19:24:44 +08:00
|
|
|
|
2009-08-13 04:21:21 +08:00
|
|
|
flush_work(&rdev->scan_done_wk);
|
2009-07-13 19:24:44 +08:00
|
|
|
cancel_work_sync(&rdev->conn_work);
|
|
|
|
flush_work(&rdev->event_work);
|
2013-02-09 01:16:19 +08:00
|
|
|
cancel_delayed_work_sync(&rdev->dfs_update_channels_wk);
|
2014-03-25 00:57:27 +08:00
|
|
|
flush_work(&rdev->destroy_work);
|
2014-12-15 19:25:39 +08:00
|
|
|
flush_work(&rdev->sched_scan_stop_wk);
|
2017-02-27 19:34:35 +08:00
|
|
|
flush_work(&rdev->propagate_radar_detect_wk);
|
|
|
|
flush_work(&rdev->propagate_cac_done_wk);
|
2020-06-04 18:04:20 +08:00
|
|
|
flush_work(&rdev->mgmt_registrations_update_wk);
|
2012-04-04 21:05:25 +08:00
|
|
|
|
2013-05-15 15:30:07 +08:00
|
|
|
#ifdef CONFIG_PM
|
|
|
|
if (rdev->wiphy.wowlan_config && rdev->ops->set_wakeup)
|
2012-06-27 22:19:42 +08:00
|
|
|
rdev_set_wakeup(rdev, false);
|
2013-05-15 15:30:07 +08:00
|
|
|
#endif
|
2012-04-04 21:05:25 +08:00
|
|
|
cfg80211_rdev_free_wowlan(rdev);
|
2013-06-29 02:51:26 +08:00
|
|
|
cfg80211_rdev_free_coalesce(rdev);
|
2007-04-24 03:20:05 +08:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(wiphy_unregister);
|
|
|
|
|
2009-07-07 09:56:12 +08:00
|
|
|
void cfg80211_dev_free(struct cfg80211_registered_device *rdev)
|
2007-04-24 03:20:05 +08:00
|
|
|
{
|
2009-02-11 04:25:55 +08:00
|
|
|
struct cfg80211_internal_bss *scan, *tmp;
|
2012-10-27 05:49:25 +08:00
|
|
|
struct cfg80211_beacon_registration *reg, *treg;
|
2009-07-07 09:56:12 +08:00
|
|
|
rfkill_destroy(rdev->rfkill);
|
2012-10-27 05:49:25 +08:00
|
|
|
list_for_each_entry_safe(reg, treg, &rdev->beacon_registrations, list) {
|
|
|
|
list_del(®->list);
|
|
|
|
kfree(reg);
|
|
|
|
}
|
2009-07-07 09:56:12 +08:00
|
|
|
list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list)
|
2013-02-01 08:49:58 +08:00
|
|
|
cfg80211_put_bss(&rdev->wiphy, &scan->pub);
|
2021-01-22 23:19:43 +08:00
|
|
|
mutex_destroy(&rdev->wiphy.mtx);
|
2009-07-07 09:56:12 +08:00
|
|
|
kfree(rdev);
|
2007-04-24 03:20:05 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
void wiphy_free(struct wiphy *wiphy)
|
|
|
|
{
|
|
|
|
put_device(&wiphy->dev);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(wiphy_free);
|
|
|
|
|
2009-06-02 19:01:41 +08:00
|
|
|
void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked)
|
|
|
|
{
|
2014-04-21 12:53:03 +08:00
|
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
|
2009-06-02 19:01:41 +08:00
|
|
|
|
2009-07-07 09:56:12 +08:00
|
|
|
if (rfkill_set_hw_state(rdev->rfkill, blocked))
|
2019-08-30 19:24:44 +08:00
|
|
|
schedule_work(&rdev->rfkill_block);
|
2009-06-02 19:01:41 +08:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(wiphy_rfkill_set_hw_state);
|
|
|
|
|
2017-02-10 17:02:31 +08:00
|
|
|
void cfg80211_cqm_config_free(struct wireless_dev *wdev)
|
|
|
|
{
|
|
|
|
kfree(wdev->cqm_config);
|
|
|
|
wdev->cqm_config = NULL;
|
|
|
|
}
|
|
|
|
|
2021-01-22 23:19:42 +08:00
|
|
|
static void _cfg80211_unregister_wdev(struct wireless_dev *wdev,
|
|
|
|
bool unregister_netdev)
|
2012-06-16 06:19:54 +08:00
|
|
|
{
|
2014-04-21 12:53:03 +08:00
|
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
|
2012-06-16 06:19:54 +08:00
|
|
|
|
|
|
|
ASSERT_RTNL();
|
2021-01-22 23:19:43 +08:00
|
|
|
lockdep_assert_held(&rdev->wiphy.mtx);
|
2012-06-16 06:19:54 +08:00
|
|
|
|
2019-02-06 14:03:10 +08:00
|
|
|
flush_work(&wdev->pmsr_free_wk);
|
|
|
|
|
2016-08-04 05:58:35 +08:00
|
|
|
nl80211_notify_iface(rdev, wdev, NL80211_CMD_DEL_INTERFACE);
|
|
|
|
|
2021-01-22 23:19:42 +08:00
|
|
|
wdev->registered = false;
|
|
|
|
|
|
|
|
if (wdev->netdev) {
|
|
|
|
sysfs_remove_link(&wdev->netdev->dev.kobj, "phy80211");
|
|
|
|
if (unregister_netdev)
|
|
|
|
unregister_netdevice(wdev->netdev);
|
|
|
|
}
|
|
|
|
|
2012-06-16 06:19:54 +08:00
|
|
|
list_del_rcu(&wdev->list);
|
2021-01-22 23:19:42 +08:00
|
|
|
synchronize_net();
|
2012-06-16 06:19:54 +08:00
|
|
|
rdev->devlist_generation++;
|
|
|
|
|
2018-10-01 20:09:17 +08:00
|
|
|
cfg80211_mlme_purge_registrations(wdev);
|
|
|
|
|
2012-06-16 06:19:54 +08:00
|
|
|
switch (wdev->iftype) {
|
|
|
|
case NL80211_IFTYPE_P2P_DEVICE:
|
2013-03-19 22:04:07 +08:00
|
|
|
cfg80211_stop_p2p_device(rdev, wdev);
|
2012-06-16 06:19:54 +08:00
|
|
|
break;
|
2016-09-20 22:31:13 +08:00
|
|
|
case NL80211_IFTYPE_NAN:
|
|
|
|
cfg80211_stop_nan(rdev, wdev);
|
|
|
|
break;
|
2012-06-16 06:19:54 +08:00
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
2017-02-10 17:02:31 +08:00
|
|
|
|
2018-10-01 20:09:17 +08:00
|
|
|
#ifdef CONFIG_CFG80211_WEXT
|
2020-08-07 14:18:13 +08:00
|
|
|
kfree_sensitive(wdev->wext.keys);
|
2019-11-26 18:05:44 +08:00
|
|
|
wdev->wext.keys = NULL;
|
2018-10-01 20:09:17 +08:00
|
|
|
#endif
|
|
|
|
/* only initialized if we have a netdev */
|
|
|
|
if (wdev->netdev)
|
|
|
|
flush_work(&wdev->disconnect_wk);
|
|
|
|
|
2017-02-10 17:02:31 +08:00
|
|
|
cfg80211_cqm_config_free(wdev);
|
2021-01-22 23:19:42 +08:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Ensure that all events have been processed and
|
|
|
|
* freed.
|
|
|
|
*/
|
|
|
|
cfg80211_process_wdev_events(wdev);
|
|
|
|
|
|
|
|
if (WARN_ON(wdev->current_bss)) {
|
|
|
|
cfg80211_unhold_bss(wdev->current_bss);
|
|
|
|
cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
|
|
|
|
wdev->current_bss = NULL;
|
|
|
|
}
|
2012-06-16 06:19:54 +08:00
|
|
|
}
|
2018-10-01 20:09:17 +08:00
|
|
|
|
|
|
|
void cfg80211_unregister_wdev(struct wireless_dev *wdev)
|
|
|
|
{
|
2021-01-22 23:19:42 +08:00
|
|
|
_cfg80211_unregister_wdev(wdev, true);
|
2018-10-01 20:09:17 +08:00
|
|
|
}
|
2012-06-16 06:19:54 +08:00
|
|
|
EXPORT_SYMBOL(cfg80211_unregister_wdev);
|
|
|
|
|
2014-01-21 07:00:56 +08:00
|
|
|
static const struct device_type wiphy_type = {
|
2009-10-02 13:15:28 +08:00
|
|
|
.name = "wlan",
|
|
|
|
};
|
|
|
|
|
2012-06-29 18:47:01 +08:00
|
|
|
void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
|
|
|
|
enum nl80211_iftype iftype, int num)
|
|
|
|
{
|
2021-01-22 23:19:43 +08:00
|
|
|
lockdep_assert_held(&rdev->wiphy.mtx);
|
2012-06-29 18:47:01 +08:00
|
|
|
|
|
|
|
rdev->num_running_ifaces += num;
|
|
|
|
if (iftype == NL80211_IFTYPE_MONITOR)
|
|
|
|
rdev->num_running_monitor_ifaces += num;
|
|
|
|
}
|
|
|
|
|
2014-04-09 21:11:01 +08:00
|
|
|
void __cfg80211_leave(struct cfg80211_registered_device *rdev,
|
|
|
|
struct wireless_dev *wdev)
|
2013-02-28 17:55:25 +08:00
|
|
|
{
|
|
|
|
struct net_device *dev = wdev->netdev;
|
2017-04-21 20:05:00 +08:00
|
|
|
struct cfg80211_sched_scan_request *pos, *tmp;
|
2013-02-28 17:55:25 +08:00
|
|
|
|
2021-01-22 23:19:43 +08:00
|
|
|
lockdep_assert_held(&rdev->wiphy.mtx);
|
2014-04-09 21:11:01 +08:00
|
|
|
ASSERT_WDEV_LOCK(wdev);
|
2013-12-05 17:21:26 +08:00
|
|
|
|
cfg80211: add peer measurement with FTM initiator API
Add a new "peer measurement" API, that can be used to measure
certain things related to a peer. Right now, only implement
FTM (flight time measurement) over it, but the idea is that
it'll be extensible to also support measuring the necessary
things to calculate e.g. angle-of-arrival for WiGig.
The API is structured to have a generic list of peers and
channels to measure with/on, and then for each of those a
set of measurements (again, only FTM right now) to perform.
Results are sent to the requesting socket, including a final
complete message.
Closing the controlling netlink socket will abort a running
measurement.
v3:
- add a bit to report "final" for partial results
- remove list keeping etc. and just unicast out the results
to the requester (big code reduction ...)
- also send complete message unicast, and as a result
remove the multicast group
- separate out struct cfg80211_pmsr_ftm_request_peer
from struct cfg80211_pmsr_request_peer
- document timeout == 0 if no timeout
- disallow setting timeout nl80211 attribute to 0,
must not include attribute for no timeout
- make MAC address randomization optional
- change num bursts exponent default to 0 (1 burst, rather
rather than the old default of 15==don't care)
v4:
- clarify NL80211_ATTR_TIMEOUT documentation
v5:
- remove unnecessary nl80211 multicast/family changes
- remove partial results bit/flag, final is sufficient
- add max_bursts_exponent, max_ftms_per_burst to capability
- rename "frames per burst" -> "FTMs per burst"
v6:
- rename cfg80211_pmsr_free_wdev() to cfg80211_pmsr_wdev_down()
and call it in leave, so the device can't go down with any
pending measurements
v7:
- wording fixes (Lior)
- fix ftm.max_bursts_exponent to allow having the limit of 0 (Lior)
v8:
- copyright statements
- minor coding style fixes
- fix error path leak
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-09-10 19:29:12 +08:00
|
|
|
cfg80211_pmsr_wdev_down(wdev);
|
|
|
|
|
2013-02-28 17:55:25 +08:00
|
|
|
switch (wdev->iftype) {
|
|
|
|
case NL80211_IFTYPE_ADHOC:
|
2014-04-09 21:11:01 +08:00
|
|
|
__cfg80211_leave_ibss(rdev, dev, true);
|
2013-02-28 17:55:25 +08:00
|
|
|
break;
|
|
|
|
case NL80211_IFTYPE_P2P_CLIENT:
|
|
|
|
case NL80211_IFTYPE_STATION:
|
2017-04-21 20:05:00 +08:00
|
|
|
list_for_each_entry_safe(pos, tmp, &rdev->sched_scan_req_list,
|
|
|
|
list) {
|
|
|
|
if (dev == pos->dev)
|
|
|
|
cfg80211_stop_sched_scan_req(rdev, pos, false);
|
|
|
|
}
|
2013-02-28 17:55:25 +08:00
|
|
|
|
|
|
|
#ifdef CONFIG_CFG80211_WEXT
|
|
|
|
kfree(wdev->wext.ie);
|
|
|
|
wdev->wext.ie = NULL;
|
|
|
|
wdev->wext.ie_len = 0;
|
|
|
|
wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
|
|
|
|
#endif
|
2013-05-15 23:44:01 +08:00
|
|
|
cfg80211_disconnect(rdev, dev,
|
|
|
|
WLAN_REASON_DEAUTH_LEAVING, true);
|
2013-02-28 17:55:25 +08:00
|
|
|
break;
|
|
|
|
case NL80211_IFTYPE_MESH_POINT:
|
2014-04-09 21:11:01 +08:00
|
|
|
__cfg80211_leave_mesh(rdev, dev);
|
2013-02-28 17:55:25 +08:00
|
|
|
break;
|
|
|
|
case NL80211_IFTYPE_AP:
|
2013-07-30 16:11:25 +08:00
|
|
|
case NL80211_IFTYPE_P2P_GO:
|
2014-04-09 21:11:01 +08:00
|
|
|
__cfg80211_stop_ap(rdev, dev, true);
|
2013-02-28 17:55:25 +08:00
|
|
|
break;
|
2014-11-03 17:33:18 +08:00
|
|
|
case NL80211_IFTYPE_OCB:
|
|
|
|
__cfg80211_leave_ocb(rdev, dev);
|
|
|
|
break;
|
2014-10-31 21:16:12 +08:00
|
|
|
case NL80211_IFTYPE_P2P_DEVICE:
|
2016-09-20 22:31:13 +08:00
|
|
|
case NL80211_IFTYPE_NAN:
|
2014-10-31 21:16:12 +08:00
|
|
|
/* cannot happen, has no netdev */
|
|
|
|
break;
|
|
|
|
case NL80211_IFTYPE_AP_VLAN:
|
|
|
|
case NL80211_IFTYPE_MONITOR:
|
|
|
|
/* nothing to do */
|
|
|
|
break;
|
|
|
|
case NL80211_IFTYPE_UNSPECIFIED:
|
2020-11-09 17:57:47 +08:00
|
|
|
case NL80211_IFTYPE_WDS:
|
2014-10-31 21:16:12 +08:00
|
|
|
case NUM_NL80211_IFTYPES:
|
|
|
|
/* invalid */
|
2013-02-28 17:55:25 +08:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-04-09 21:11:01 +08:00
|
|
|
void cfg80211_leave(struct cfg80211_registered_device *rdev,
|
|
|
|
struct wireless_dev *wdev)
|
|
|
|
{
|
|
|
|
wdev_lock(wdev);
|
|
|
|
__cfg80211_leave(rdev, wdev);
|
|
|
|
wdev_unlock(wdev);
|
|
|
|
}
|
|
|
|
|
|
|
|
void cfg80211_stop_iface(struct wiphy *wiphy, struct wireless_dev *wdev,
|
|
|
|
gfp_t gfp)
|
|
|
|
{
|
|
|
|
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
|
|
|
|
struct cfg80211_event *ev;
|
|
|
|
unsigned long flags;
|
|
|
|
|
|
|
|
trace_cfg80211_stop_iface(wiphy, wdev);
|
|
|
|
|
|
|
|
ev = kzalloc(sizeof(*ev), gfp);
|
|
|
|
if (!ev)
|
|
|
|
return;
|
|
|
|
|
|
|
|
ev->type = EVENT_STOPPED;
|
|
|
|
|
|
|
|
spin_lock_irqsave(&wdev->event_lock, flags);
|
|
|
|
list_add_tail(&ev->list, &wdev->event_list);
|
|
|
|
spin_unlock_irqrestore(&wdev->event_lock, flags);
|
|
|
|
queue_work(cfg80211_wq, &rdev->event_work);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(cfg80211_stop_iface);
|
|
|
|
|
cfg80211: initialize wdev data earlier
There's a race condition in the netdev registration in that
NETDEV_REGISTER actually happens after the netdev is available,
and so if we initialize things only there, we might get called
with an uninitialized wdev through nl80211 - not using a wdev
but using a netdev interface index.
I found this while looking into a syzbot report, but it doesn't
really seem to be related, and unfortunately there's no repro
for it (yet). I can't (yet) explain how it managed to get into
cfg80211_release_pmsr() from nl80211_netlink_notify() without
the wdev having been initialized, as the latter only iterates
the wdevs that are linked into the rdev, which even without the
change here happened after init.
However, looking at this, it seems fairly clear that the init
needs to be done earlier, otherwise we might even re-init on a
netns move, when data might still be pending.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20201009135821.fdcbba3aad65.Ie9201d91dbcb7da32318812effdc1561aeaf4cdc@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-10-09 19:58:22 +08:00
|
|
|
void cfg80211_init_wdev(struct wireless_dev *wdev)
|
2018-09-13 20:12:03 +08:00
|
|
|
{
|
|
|
|
mutex_init(&wdev->mtx);
|
|
|
|
INIT_LIST_HEAD(&wdev->event_list);
|
|
|
|
spin_lock_init(&wdev->event_lock);
|
|
|
|
INIT_LIST_HEAD(&wdev->mgmt_registrations);
|
|
|
|
spin_lock_init(&wdev->mgmt_registrations_lock);
|
cfg80211: add peer measurement with FTM initiator API
Add a new "peer measurement" API, that can be used to measure
certain things related to a peer. Right now, only implement
FTM (flight time measurement) over it, but the idea is that
it'll be extensible to also support measuring the necessary
things to calculate e.g. angle-of-arrival for WiGig.
The API is structured to have a generic list of peers and
channels to measure with/on, and then for each of those a
set of measurements (again, only FTM right now) to perform.
Results are sent to the requesting socket, including a final
complete message.
Closing the controlling netlink socket will abort a running
measurement.
v3:
- add a bit to report "final" for partial results
- remove list keeping etc. and just unicast out the results
to the requester (big code reduction ...)
- also send complete message unicast, and as a result
remove the multicast group
- separate out struct cfg80211_pmsr_ftm_request_peer
from struct cfg80211_pmsr_request_peer
- document timeout == 0 if no timeout
- disallow setting timeout nl80211 attribute to 0,
must not include attribute for no timeout
- make MAC address randomization optional
- change num bursts exponent default to 0 (1 burst, rather
rather than the old default of 15==don't care)
v4:
- clarify NL80211_ATTR_TIMEOUT documentation
v5:
- remove unnecessary nl80211 multicast/family changes
- remove partial results bit/flag, final is sufficient
- add max_bursts_exponent, max_ftms_per_burst to capability
- rename "frames per burst" -> "FTMs per burst"
v6:
- rename cfg80211_pmsr_free_wdev() to cfg80211_pmsr_wdev_down()
and call it in leave, so the device can't go down with any
pending measurements
v7:
- wording fixes (Lior)
- fix ftm.max_bursts_exponent to allow having the limit of 0 (Lior)
v8:
- copyright statements
- minor coding style fixes
- fix error path leak
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-09-10 19:29:12 +08:00
|
|
|
INIT_LIST_HEAD(&wdev->pmsr_list);
|
|
|
|
spin_lock_init(&wdev->pmsr_lock);
|
|
|
|
INIT_WORK(&wdev->pmsr_free_wk, cfg80211_pmsr_free_wk);
|
2018-09-13 20:12:03 +08:00
|
|
|
|
cfg80211: initialize wdev data earlier
There's a race condition in the netdev registration in that
NETDEV_REGISTER actually happens after the netdev is available,
and so if we initialize things only there, we might get called
with an uninitialized wdev through nl80211 - not using a wdev
but using a netdev interface index.
I found this while looking into a syzbot report, but it doesn't
really seem to be related, and unfortunately there's no repro
for it (yet). I can't (yet) explain how it managed to get into
cfg80211_release_pmsr() from nl80211_netlink_notify() without
the wdev having been initialized, as the latter only iterates
the wdevs that are linked into the rdev, which even without the
change here happened after init.
However, looking at this, it seems fairly clear that the init
needs to be done earlier, otherwise we might even re-init on a
netns move, when data might still be pending.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20201009135821.fdcbba3aad65.Ie9201d91dbcb7da32318812effdc1561aeaf4cdc@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-10-09 19:58:22 +08:00
|
|
|
#ifdef CONFIG_CFG80211_WEXT
|
|
|
|
wdev->wext.default_key = -1;
|
|
|
|
wdev->wext.default_mgmt_key = -1;
|
|
|
|
wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
if (wdev->wiphy->flags & WIPHY_FLAG_PS_ON_BY_DEFAULT)
|
|
|
|
wdev->ps = true;
|
|
|
|
else
|
|
|
|
wdev->ps = false;
|
|
|
|
/* allow mac80211 to determine the timeout */
|
|
|
|
wdev->ps_timeout = -1;
|
|
|
|
|
|
|
|
if ((wdev->iftype == NL80211_IFTYPE_STATION ||
|
|
|
|
wdev->iftype == NL80211_IFTYPE_P2P_CLIENT ||
|
|
|
|
wdev->iftype == NL80211_IFTYPE_ADHOC) && !wdev->use_4addr)
|
|
|
|
wdev->netdev->priv_flags |= IFF_DONT_BRIDGE;
|
|
|
|
|
|
|
|
INIT_WORK(&wdev->disconnect_wk, cfg80211_autodisconnect_wk);
|
|
|
|
}
|
|
|
|
|
|
|
|
void cfg80211_register_wdev(struct cfg80211_registered_device *rdev,
|
|
|
|
struct wireless_dev *wdev)
|
|
|
|
{
|
2021-01-22 23:19:43 +08:00
|
|
|
ASSERT_RTNL();
|
|
|
|
lockdep_assert_held(&rdev->wiphy.mtx);
|
|
|
|
|
2018-09-13 20:12:03 +08:00
|
|
|
/*
|
|
|
|
* We get here also when the interface changes network namespaces,
|
|
|
|
* as it's registered into the new one, but we don't want it to
|
|
|
|
* change ID in that case. Checking if the ID is already assigned
|
|
|
|
* works, because 0 isn't considered a valid ID and the memory is
|
|
|
|
* 0-initialized.
|
|
|
|
*/
|
|
|
|
if (!wdev->identifier)
|
|
|
|
wdev->identifier = ++rdev->wdev_id;
|
|
|
|
list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
|
|
|
|
rdev->devlist_generation++;
|
2021-01-22 23:19:42 +08:00
|
|
|
wdev->registered = true;
|
2018-10-01 20:18:31 +08:00
|
|
|
|
|
|
|
nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
|
2018-09-13 20:12:03 +08:00
|
|
|
}
|
|
|
|
|
2021-01-22 23:19:42 +08:00
|
|
|
int cfg80211_register_netdevice(struct net_device *dev)
|
|
|
|
{
|
|
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
|
|
struct cfg80211_registered_device *rdev;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ASSERT_RTNL();
|
|
|
|
|
|
|
|
if (WARN_ON(!wdev))
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
rdev = wiphy_to_rdev(wdev->wiphy);
|
|
|
|
|
|
|
|
lockdep_assert_held(&rdev->wiphy.mtx);
|
|
|
|
|
|
|
|
/* we'll take care of this */
|
|
|
|
wdev->registered = true;
|
2021-02-02 02:20:50 +08:00
|
|
|
wdev->registering = true;
|
2021-01-22 23:19:42 +08:00
|
|
|
ret = register_netdevice(dev);
|
|
|
|
if (ret)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj,
|
|
|
|
"phy80211")) {
|
|
|
|
pr_err("failed to add phy80211 symlink to netdev!\n");
|
|
|
|
unregister_netdevice(dev);
|
|
|
|
ret = -EINVAL;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
cfg80211_register_wdev(rdev, wdev);
|
|
|
|
ret = 0;
|
|
|
|
out:
|
2021-02-02 02:20:50 +08:00
|
|
|
wdev->registering = false;
|
2021-01-22 23:19:42 +08:00
|
|
|
if (ret)
|
|
|
|
wdev->registered = false;
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(cfg80211_register_netdevice);
|
|
|
|
|
2012-05-08 17:38:53 +08:00
|
|
|
static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
|
2013-05-28 09:30:21 +08:00
|
|
|
unsigned long state, void *ptr)
|
2007-04-24 03:20:05 +08:00
|
|
|
{
|
2013-05-28 09:30:21 +08:00
|
|
|
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
|
2009-07-02 03:26:45 +08:00
|
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
2007-04-24 03:20:05 +08:00
|
|
|
struct cfg80211_registered_device *rdev;
|
2017-04-21 20:05:00 +08:00
|
|
|
struct cfg80211_sched_scan_request *pos, *tmp;
|
2007-04-24 03:20:05 +08:00
|
|
|
|
2009-07-02 03:26:45 +08:00
|
|
|
if (!wdev)
|
2009-06-02 19:01:41 +08:00
|
|
|
return NOTIFY_DONE;
|
2007-04-24 03:20:05 +08:00
|
|
|
|
2014-04-21 12:53:03 +08:00
|
|
|
rdev = wiphy_to_rdev(wdev->wiphy);
|
2007-04-24 03:20:05 +08:00
|
|
|
|
2009-07-02 03:26:45 +08:00
|
|
|
WARN_ON(wdev->iftype == NL80211_IFTYPE_UNSPECIFIED);
|
2008-09-16 20:55:09 +08:00
|
|
|
|
2007-04-24 03:20:05 +08:00
|
|
|
switch (state) {
|
2009-10-02 13:15:28 +08:00
|
|
|
case NETDEV_POST_INIT:
|
|
|
|
SET_NETDEV_DEVTYPE(dev, &wiphy_type);
|
cfg80211: initialize wdev data earlier
There's a race condition in the netdev registration in that
NETDEV_REGISTER actually happens after the netdev is available,
and so if we initialize things only there, we might get called
with an uninitialized wdev through nl80211 - not using a wdev
but using a netdev interface index.
I found this while looking into a syzbot report, but it doesn't
really seem to be related, and unfortunately there's no repro
for it (yet). I can't (yet) explain how it managed to get into
cfg80211_release_pmsr() from nl80211_netlink_notify() without
the wdev having been initialized, as the latter only iterates
the wdevs that are linked into the rdev, which even without the
change here happened after init.
However, looking at this, it seems fairly clear that the init
needs to be done earlier, otherwise we might even re-init on a
netns move, when data might still be pending.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20201009135821.fdcbba3aad65.Ie9201d91dbcb7da32318812effdc1561aeaf4cdc@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-10-09 19:58:22 +08:00
|
|
|
wdev->netdev = dev;
|
|
|
|
/* can only change netns with wiphy */
|
|
|
|
dev->features |= NETIF_F_NETNS_LOCAL;
|
|
|
|
|
|
|
|
cfg80211_init_wdev(wdev);
|
2009-10-02 13:15:28 +08:00
|
|
|
break;
|
2007-04-24 03:20:05 +08:00
|
|
|
case NETDEV_REGISTER:
|
2021-01-22 23:19:43 +08:00
|
|
|
if (!wdev->registered) {
|
|
|
|
wiphy_lock(&rdev->wiphy);
|
2021-01-22 23:19:42 +08:00
|
|
|
cfg80211_register_wdev(rdev, wdev);
|
2021-01-22 23:19:43 +08:00
|
|
|
wiphy_unlock(&rdev->wiphy);
|
|
|
|
}
|
2021-01-22 23:19:42 +08:00
|
|
|
break;
|
|
|
|
case NETDEV_UNREGISTER:
|
2009-08-17 18:25:37 +08:00
|
|
|
/*
|
2021-01-22 23:19:42 +08:00
|
|
|
* It is possible to get NETDEV_UNREGISTER multiple times,
|
|
|
|
* so check wdev->registered.
|
2009-08-17 18:25:37 +08:00
|
|
|
*/
|
2021-02-02 02:20:50 +08:00
|
|
|
if (wdev->registered && !wdev->registering) {
|
2021-01-22 23:19:43 +08:00
|
|
|
wiphy_lock(&rdev->wiphy);
|
2021-01-22 23:19:42 +08:00
|
|
|
_cfg80211_unregister_wdev(wdev, false);
|
2021-01-22 23:19:43 +08:00
|
|
|
wiphy_unlock(&rdev->wiphy);
|
|
|
|
}
|
2007-04-24 03:20:05 +08:00
|
|
|
break;
|
2009-04-20 03:24:32 +08:00
|
|
|
case NETDEV_GOING_DOWN:
|
2021-01-22 23:19:43 +08:00
|
|
|
wiphy_lock(&rdev->wiphy);
|
2013-02-28 17:55:25 +08:00
|
|
|
cfg80211_leave(rdev, wdev);
|
2021-01-22 23:19:43 +08:00
|
|
|
wiphy_unlock(&rdev->wiphy);
|
2009-08-21 03:36:16 +08:00
|
|
|
break;
|
|
|
|
case NETDEV_DOWN:
|
2021-01-22 23:19:43 +08:00
|
|
|
wiphy_lock(&rdev->wiphy);
|
2012-06-29 18:47:01 +08:00
|
|
|
cfg80211_update_iface_num(rdev, wdev->iftype, -1);
|
2014-01-22 17:14:18 +08:00
|
|
|
if (rdev->scan_req && rdev->scan_req->wdev == wdev) {
|
2020-09-18 17:33:13 +08:00
|
|
|
if (WARN_ON(!rdev->scan_req->notified &&
|
|
|
|
(!rdev->int_scan_req ||
|
|
|
|
!rdev->int_scan_req->notified)))
|
2016-07-05 22:10:13 +08:00
|
|
|
rdev->scan_req->info.aborted = true;
|
cfg80211: send scan results from work queue
Due to the previous commit, when a scan finishes, it is in theory
possible to hit the following sequence:
1. interface starts being removed
2. scan is cancelled by driver and cfg80211 is notified
3. scan done work is scheduled
4. interface is removed completely, rdev->scan_req is freed,
event sent to userspace but scan done work remains pending
5. new scan is requested on another virtual interface
6. scan done work runs, freeing the still-running scan
To fix this situation, hang on to the scan done message and block
new scans while that is the case, and only send the message from
the work function, regardless of whether the scan_req is already
freed from interface removal. This makes step 5 above impossible
and changes step 6 to be
5. scan done work runs, sending the scan done message
As this can't work for wext, so we send the message immediately,
but this shouldn't be an issue since we still return -EBUSY.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-01-22 17:14:19 +08:00
|
|
|
___cfg80211_scan_done(rdev, false);
|
2014-01-22 17:14:18 +08:00
|
|
|
}
|
2013-05-09 03:45:15 +08:00
|
|
|
|
2017-04-21 20:05:00 +08:00
|
|
|
list_for_each_entry_safe(pos, tmp,
|
|
|
|
&rdev->sched_scan_req_list, list) {
|
2018-09-08 19:21:28 +08:00
|
|
|
if (WARN_ON(pos->dev == wdev->netdev))
|
2017-04-21 20:05:00 +08:00
|
|
|
cfg80211_stop_sched_scan_req(rdev, pos, false);
|
2013-05-09 03:45:15 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
rdev->opencount--;
|
2021-01-22 23:19:43 +08:00
|
|
|
wiphy_unlock(&rdev->wiphy);
|
2013-05-09 03:45:15 +08:00
|
|
|
wake_up(&rdev->dev_wait);
|
2009-04-20 03:24:32 +08:00
|
|
|
break;
|
|
|
|
case NETDEV_UP:
|
2021-01-22 23:19:43 +08:00
|
|
|
wiphy_lock(&rdev->wiphy);
|
2012-07-13 04:19:48 +08:00
|
|
|
cfg80211_update_iface_num(rdev, wdev->iftype, 1);
|
2009-07-07 09:56:11 +08:00
|
|
|
wdev_lock(wdev);
|
2009-07-02 03:26:56 +08:00
|
|
|
switch (wdev->iftype) {
|
2010-12-03 16:20:44 +08:00
|
|
|
#ifdef CONFIG_CFG80211_WEXT
|
2009-07-02 03:26:56 +08:00
|
|
|
case NL80211_IFTYPE_ADHOC:
|
cfg80211: rework key operation
This reworks the key operation in cfg80211, and now only
allows, from userspace, configuring keys (via nl80211)
after the connection has been established (in managed
mode), the IBSS been joined (in IBSS mode), at any time
(in AP[_VLAN] modes) or never for all the other modes.
In order to do shared key authentication correctly, it
is now possible to give a WEP key to the AUTH command.
To configure static WEP keys, these are given to the
CONNECT or IBSS_JOIN command directly, for a userspace
SME it is assumed it will configure it properly after
the connection has been established.
Since mac80211 used to check the default key in IBSS
mode to see whether or not the network is protected,
it needs an update in that area, as well as an update
to make use of the WEP key passed to auth() for shared
key authentication.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-07-08 20:22:54 +08:00
|
|
|
cfg80211_ibss_wext_join(rdev, wdev);
|
2009-04-20 03:24:32 +08:00
|
|
|
break;
|
2009-07-02 03:26:56 +08:00
|
|
|
case NL80211_IFTYPE_STATION:
|
cfg80211: rework key operation
This reworks the key operation in cfg80211, and now only
allows, from userspace, configuring keys (via nl80211)
after the connection has been established (in managed
mode), the IBSS been joined (in IBSS mode), at any time
(in AP[_VLAN] modes) or never for all the other modes.
In order to do shared key authentication correctly, it
is now possible to give a WEP key to the AUTH command.
To configure static WEP keys, these are given to the
CONNECT or IBSS_JOIN command directly, for a userspace
SME it is assumed it will configure it properly after
the connection has been established.
Since mac80211 used to check the default key in IBSS
mode to see whether or not the network is protected,
it needs an update in that area, as well as an update
to make use of the WEP key passed to auth() for shared
key authentication.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-07-08 20:22:54 +08:00
|
|
|
cfg80211_mgd_wext_connect(rdev, wdev);
|
2009-07-02 03:26:56 +08:00
|
|
|
break;
|
2010-12-03 16:20:44 +08:00
|
|
|
#endif
|
2010-12-17 09:37:49 +08:00
|
|
|
#ifdef CONFIG_MAC80211_MESH
|
2010-12-03 16:20:44 +08:00
|
|
|
case NL80211_IFTYPE_MESH_POINT:
|
2010-12-17 09:37:49 +08:00
|
|
|
{
|
|
|
|
/* backward compat code... */
|
|
|
|
struct mesh_setup setup;
|
|
|
|
memcpy(&setup, &default_mesh_setup,
|
|
|
|
sizeof(setup));
|
|
|
|
/* back compat only needed for mesh_id */
|
|
|
|
setup.mesh_id = wdev->ssid;
|
|
|
|
setup.mesh_id_len = wdev->mesh_id_up_len;
|
|
|
|
if (wdev->mesh_id_up_len)
|
|
|
|
__cfg80211_join_mesh(rdev, dev,
|
|
|
|
&setup,
|
|
|
|
&default_mesh_config);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
#endif
|
2009-07-02 03:26:56 +08:00
|
|
|
default:
|
2009-04-20 03:24:32 +08:00
|
|
|
break;
|
2009-07-02 03:26:56 +08:00
|
|
|
}
|
2009-07-07 09:56:11 +08:00
|
|
|
wdev_unlock(wdev);
|
2009-08-19 01:51:57 +08:00
|
|
|
rdev->opencount++;
|
2011-01-31 21:52:58 +08:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Configure power management to the driver here so that its
|
|
|
|
* correctly set also after interface type changes etc.
|
|
|
|
*/
|
2011-07-19 17:57:13 +08:00
|
|
|
if ((wdev->iftype == NL80211_IFTYPE_STATION ||
|
|
|
|
wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
|
2017-02-14 03:53:38 +08:00
|
|
|
rdev->ops->set_power_mgmt &&
|
|
|
|
rdev_set_power_mgmt(rdev, dev, wdev->ps,
|
|
|
|
wdev->ps_timeout)) {
|
|
|
|
/* assume this means it's off */
|
|
|
|
wdev->ps = false;
|
|
|
|
}
|
2021-01-22 23:19:43 +08:00
|
|
|
wiphy_unlock(&rdev->wiphy);
|
2009-07-02 03:26:45 +08:00
|
|
|
break;
|
2009-06-02 19:01:41 +08:00
|
|
|
case NETDEV_PRE_UP:
|
2019-07-22 15:14:50 +08:00
|
|
|
if (!cfg80211_iftype_allowed(wdev->wiphy, wdev->iftype,
|
|
|
|
wdev->use_4addr, 0))
|
2009-07-07 09:56:13 +08:00
|
|
|
return notifier_from_errno(-EOPNOTSUPP);
|
2019-05-08 17:25:33 +08:00
|
|
|
|
2014-02-27 17:07:21 +08:00
|
|
|
if (rfkill_blocked(rdev->rfkill))
|
|
|
|
return notifier_from_errno(-ERFKILL);
|
2009-06-02 19:01:41 +08:00
|
|
|
break;
|
2014-04-21 12:53:04 +08:00
|
|
|
default:
|
|
|
|
return NOTIFY_DONE;
|
2007-04-24 03:20:05 +08:00
|
|
|
}
|
|
|
|
|
2016-01-27 20:29:34 +08:00
|
|
|
wireless_nlevent_flush();
|
|
|
|
|
2014-04-21 12:53:04 +08:00
|
|
|
return NOTIFY_OK;
|
2007-04-24 03:20:05 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
static struct notifier_block cfg80211_netdev_notifier = {
|
|
|
|
.notifier_call = cfg80211_netdev_notifier_call,
|
|
|
|
};
|
|
|
|
|
2009-07-14 06:33:35 +08:00
|
|
|
static void __net_exit cfg80211_pernet_exit(struct net *net)
|
|
|
|
{
|
|
|
|
struct cfg80211_registered_device *rdev;
|
|
|
|
|
|
|
|
rtnl_lock();
|
|
|
|
list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
|
|
|
|
if (net_eq(wiphy_net(&rdev->wiphy), net))
|
|
|
|
WARN_ON(cfg80211_switch_netns(rdev, &init_net));
|
|
|
|
}
|
|
|
|
rtnl_unlock();
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct pernet_operations cfg80211_pernet_ops = {
|
|
|
|
.exit = cfg80211_pernet_exit,
|
|
|
|
};
|
|
|
|
|
|
|
|
static int __init cfg80211_init(void)
|
2007-04-24 03:20:05 +08:00
|
|
|
{
|
2008-09-10 14:19:48 +08:00
|
|
|
int err;
|
|
|
|
|
2009-07-14 06:33:35 +08:00
|
|
|
err = register_pernet_device(&cfg80211_pernet_ops);
|
|
|
|
if (err)
|
|
|
|
goto out_fail_pernet;
|
|
|
|
|
2008-09-10 14:19:48 +08:00
|
|
|
err = wiphy_sysfs_init();
|
2007-04-24 03:20:05 +08:00
|
|
|
if (err)
|
|
|
|
goto out_fail_sysfs;
|
|
|
|
|
|
|
|
err = register_netdevice_notifier(&cfg80211_netdev_notifier);
|
|
|
|
if (err)
|
|
|
|
goto out_fail_notifier;
|
|
|
|
|
2007-09-21 01:09:35 +08:00
|
|
|
err = nl80211_init();
|
|
|
|
if (err)
|
|
|
|
goto out_fail_nl80211;
|
|
|
|
|
2007-04-24 03:20:05 +08:00
|
|
|
ieee80211_debugfs_dir = debugfs_create_dir("ieee80211", NULL);
|
|
|
|
|
2008-09-10 14:19:48 +08:00
|
|
|
err = regulatory_init();
|
|
|
|
if (err)
|
|
|
|
goto out_fail_reg;
|
|
|
|
|
2016-08-31 03:05:07 +08:00
|
|
|
cfg80211_wq = alloc_ordered_workqueue("cfg80211", WQ_MEM_RECLAIM);
|
2013-03-20 20:22:54 +08:00
|
|
|
if (!cfg80211_wq) {
|
|
|
|
err = -ENOMEM;
|
2009-11-25 22:13:00 +08:00
|
|
|
goto out_fail_wq;
|
2013-03-20 20:22:54 +08:00
|
|
|
}
|
2009-11-25 22:13:00 +08:00
|
|
|
|
2007-04-24 03:20:05 +08:00
|
|
|
return 0;
|
|
|
|
|
2009-11-25 22:13:00 +08:00
|
|
|
out_fail_wq:
|
|
|
|
regulatory_exit();
|
2008-09-10 14:19:48 +08:00
|
|
|
out_fail_reg:
|
|
|
|
debugfs_remove(ieee80211_debugfs_dir);
|
2015-01-28 10:03:26 +08:00
|
|
|
nl80211_exit();
|
2007-09-21 01:09:35 +08:00
|
|
|
out_fail_nl80211:
|
|
|
|
unregister_netdevice_notifier(&cfg80211_netdev_notifier);
|
2007-04-24 03:20:05 +08:00
|
|
|
out_fail_notifier:
|
|
|
|
wiphy_sysfs_exit();
|
|
|
|
out_fail_sysfs:
|
2009-07-14 06:33:35 +08:00
|
|
|
unregister_pernet_device(&cfg80211_pernet_ops);
|
|
|
|
out_fail_pernet:
|
2007-04-24 03:20:05 +08:00
|
|
|
return err;
|
|
|
|
}
|
2015-10-15 17:22:58 +08:00
|
|
|
fs_initcall(cfg80211_init);
|
2007-04-24 03:20:05 +08:00
|
|
|
|
2010-06-18 15:38:54 +08:00
|
|
|
static void __exit cfg80211_exit(void)
|
2007-04-24 03:20:05 +08:00
|
|
|
{
|
|
|
|
debugfs_remove(ieee80211_debugfs_dir);
|
2007-09-21 01:09:35 +08:00
|
|
|
nl80211_exit();
|
2007-04-24 03:20:05 +08:00
|
|
|
unregister_netdevice_notifier(&cfg80211_netdev_notifier);
|
|
|
|
wiphy_sysfs_exit();
|
2008-09-10 14:19:48 +08:00
|
|
|
regulatory_exit();
|
2009-07-14 06:33:35 +08:00
|
|
|
unregister_pernet_device(&cfg80211_pernet_ops);
|
2009-11-25 22:13:00 +08:00
|
|
|
destroy_workqueue(cfg80211_wq);
|
2007-04-24 03:20:05 +08:00
|
|
|
}
|
|
|
|
module_exit(cfg80211_exit);
|