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 (WARN_ON(!setup->chandef.chan))
33		return -EINVAL;
34
35	err = rdev_join_ocb(rdev, dev, setup);
36	if (!err)
37		wdev->chandef = setup->chandef;
38
39	return err;
40}
41
42int cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
43		      struct net_device *dev,
44		      struct ocb_setup *setup)
45{
46	struct wireless_dev *wdev = dev->ieee80211_ptr;
47	int err;
48
49	wdev_lock(wdev);
50	err = __cfg80211_join_ocb(rdev, dev, setup);
51	wdev_unlock(wdev);
52
53	return err;
54}
55
56int __cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
57			 struct net_device *dev)
58{
59	struct wireless_dev *wdev = dev->ieee80211_ptr;
60	int err;
61
62	ASSERT_WDEV_LOCK(wdev);
63
64	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
65		return -EOPNOTSUPP;
66
67	if (!rdev->ops->leave_ocb)
68		return -EOPNOTSUPP;
69
70	err = rdev_leave_ocb(rdev, dev);
71	if (!err)
72		memset(&wdev->chandef, 0, sizeof(wdev->chandef));
73
74	return err;
75}
76
77int cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
78		       struct net_device *dev)
79{
80	struct wireless_dev *wdev = dev->ieee80211_ptr;
81	int err;
82
83	wdev_lock(wdev);
84	err = __cfg80211_leave_ocb(rdev, dev);
85	wdev_unlock(wdev);
86
87	return err;
88}
89