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Revision 4ffd96c9621fcec3b84f3f997e036cc7077ec465 authored by Linus Torvalds on 19 May 2023, 18:05:42 UTC, committed by Linus Torvalds on 19 May 2023, 18:05:42 UTC 
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
 
Pull arm64 fixes from Will Deacon:
 "A mixture of compiler/static checker resolutions and a couple of MTE
  fixes:

   - Avoid erroneously marking untagged pages with PG_mte_tagged

   - Always reset KASAN tags for destination page in copy_page()

   - Mark PMU header functions 'static inline'

   - Fix some sparse warnings due to missing casts"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: mte: Do not set PG_mte_tagged if tags were not initialized
  arm64: Also reset KASAN tag if page is not PG_mte_tagged
  arm64: perf: Mark all accessor functions inline
  ARM: perf: Mark all accessor functions inline
  arm64: vdso: Pass (void *) to virt_to_page()
  arm64/mm: mark private VM_FAULT_X defines as vm_fault_t
2 parent s 46be92e + c4c597f
Raw File
ocb.c 
// SPDX-License-Identifier: GPL-2.0-only
/*
 * OCB mode implementation
 *
 * Copyright: (c) 2014 Czech Technical University in Prague
 *            (c) 2014 Volkswagen Group Research
 * Copyright (C) 2022 Intel Corporation
 * Author:    Rostislav Lisovy <rostislav.lisovy@fel.cvut.cz>
 * Funded by: Volkswagen Group Research
 */

#include <linux/ieee80211.h>
#include <net/cfg80211.h>
#include "nl80211.h"
#include "core.h"
#include "rdev-ops.h"

int __cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
			struct net_device *dev,
			struct ocb_setup *setup)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	int err;

	ASSERT_WDEV_LOCK(wdev);

	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
		return -EOPNOTSUPP;

	if (!rdev->ops->join_ocb)
		return -EOPNOTSUPP;

	if (WARN_ON(!setup->chandef.chan))
		return -EINVAL;

	err = rdev_join_ocb(rdev, dev, setup);
	if (!err)
		wdev->u.ocb.chandef = setup->chandef;

	return err;
}

int cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
		      struct net_device *dev,
		      struct ocb_setup *setup)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	int err;

	wdev_lock(wdev);
	err = __cfg80211_join_ocb(rdev, dev, setup);
	wdev_unlock(wdev);

	return err;
}

int __cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
			 struct net_device *dev)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	int err;

	ASSERT_WDEV_LOCK(wdev);

	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
		return -EOPNOTSUPP;

	if (!rdev->ops->leave_ocb)
		return -EOPNOTSUPP;

	err = rdev_leave_ocb(rdev, dev);
	if (!err)
		memset(&wdev->u.ocb.chandef, 0, sizeof(wdev->u.ocb.chandef));

	return err;
}

int cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
		       struct net_device *dev)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	int err;

	wdev_lock(wdev);
	err = __cfg80211_leave_ocb(rdev, dev);
	wdev_unlock(wdev);

	return err;
}
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