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(s: &wdev->u.ocb.chandef, c: 0, n: sizeof(wdev->u.ocb.chandef));
63
64 return err;
65}
66