1/*
 2 * OCB mode implementation
 3 *
 4 * Copyright: (c) 2014 Czech Technical University in Prague
 5 *            (c) 2014 Volkswagen Group Research
 
 6 * Author:    Rostislav Lisovy <rostislav.lisovy@fel.cvut.cz>
 7 * Funded by: Volkswagen Group Research
 8 *
 9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
14#include <linux/ieee80211.h>
15#include <net/cfg80211.h>
16#include "nl80211.h"
17#include "core.h"
18#include "rdev-ops.h"
19
20int __cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
21			struct net_device *dev,
22			struct ocb_setup *setup)
23{
24	struct wireless_dev *wdev = dev->ieee80211_ptr;
25	int err;
26
27	ASSERT_WDEV_LOCK(wdev);
28
29	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
30		return -EOPNOTSUPP;
31
32	if (!rdev->ops->join_ocb)
33		return -EOPNOTSUPP;
34
35	if (WARN_ON(!setup->chandef.chan))
36		return -EINVAL;
37
38	err = rdev_join_ocb(rdev, dev, setup);
39	if (!err)
40		wdev->chandef = setup->chandef;
41
42	return err;
43}
44
45int cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
46		      struct net_device *dev,
47		      struct ocb_setup *setup)
48{
49	struct wireless_dev *wdev = dev->ieee80211_ptr;
50	int err;
51
52	wdev_lock(wdev);
53	err = __cfg80211_join_ocb(rdev, dev, setup);
54	wdev_unlock(wdev);
55
56	return err;
57}
58
59int __cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
60			 struct net_device *dev)
61{
62	struct wireless_dev *wdev = dev->ieee80211_ptr;
63	int err;
64
65	ASSERT_WDEV_LOCK(wdev);
66
67	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
68		return -EOPNOTSUPP;
69
70	if (!rdev->ops->leave_ocb)
71		return -EOPNOTSUPP;
72
 
 
 
73	err = rdev_leave_ocb(rdev, dev);
74	if (!err)
75		memset(&wdev->chandef, 0, sizeof(wdev->chandef));
76
77	return err;
78}
79
80int cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
81		       struct net_device *dev)
82{
83	struct wireless_dev *wdev = dev->ieee80211_ptr;
84	int err;
85
86	wdev_lock(wdev);
87	err = __cfg80211_leave_ocb(rdev, dev);
88	wdev_unlock(wdev);
89
90	return err;
91}

 1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * OCB mode implementation
 4 *
 5 * Copyright: (c) 2014 Czech Technical University in Prague
 6 *            (c) 2014 Volkswagen Group Research
 7 * Copyright (C) 2022-2023 Intel Corporation
 8 * Author:    Rostislav Lisovy <rostislav.lisovy@fel.cvut.cz>
 9 * Funded by: Volkswagen Group Research
 
 
 
 
10 */
11
12#include <linux/ieee80211.h>
13#include <net/cfg80211.h>
14#include "nl80211.h"
15#include "core.h"
16#include "rdev-ops.h"
17
18int cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
19		      struct net_device *dev,
20		      struct ocb_setup *setup)
21{
22	struct wireless_dev *wdev = dev->ieee80211_ptr;
23	int err;
24
25	lockdep_assert_wiphy(wdev->wiphy);
26
27	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
28		return -EOPNOTSUPP;
29
30	if (!rdev->ops->join_ocb)
31		return -EOPNOTSUPP;
32
33	if (WARN_ON(!setup->chandef.chan))
34		return -EINVAL;
35
36	err = rdev_join_ocb(rdev, dev, setup);
37	if (!err)
38		wdev->u.ocb.chandef = setup->chandef;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
39
40	return err;
41}
42
43int cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
44		       struct net_device *dev)
45{
46	struct wireless_dev *wdev = dev->ieee80211_ptr;
47	int err;
48
49	lockdep_assert_wiphy(wdev->wiphy);
50
51	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
52		return -EOPNOTSUPP;
53
54	if (!rdev->ops->leave_ocb)
55		return -EOPNOTSUPP;
56
57	if (!wdev->u.ocb.chandef.chan)
58		return -ENOTCONN;
59
60	err = rdev_leave_ocb(rdev, dev);
61	if (!err)
62		memset(&wdev->u.ocb.chandef, 0, sizeof(wdev->u.ocb.chandef));
 
 
 
 
 
 
 
 
 
 
 
 
 
63
64	return err;
65}