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 * Author: Rostislav Lisovy <rostislav.lisovy@fel.cvut.cz>
8 * Funded by: Volkswagen Group Research
9 */
10
11 #include <linux/ieee80211.h>
12 #include <net/cfg80211.h>
13 #include "nl80211.h"
14 #include "core.h"
15 #include "rdev-ops.h"
16
__cfg80211_join_ocb(struct cfg80211_registered_device * rdev,struct net_device * dev,struct ocb_setup * setup)17 int __cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
18 struct net_device *dev,
19 struct ocb_setup *setup)
20 {
21 struct wireless_dev *wdev = dev->ieee80211_ptr;
22 int err;
23
24 ASSERT_WDEV_LOCK(wdev);
25
26 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
27 return -EOPNOTSUPP;
28
29 if (!rdev->ops->join_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
cfg80211_join_ocb(struct cfg80211_registered_device * rdev,struct net_device * dev,struct ocb_setup * setup)42 int 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
__cfg80211_leave_ocb(struct cfg80211_registered_device * rdev,struct net_device * dev)56 int __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
cfg80211_leave_ocb(struct cfg80211_registered_device * rdev,struct net_device * dev)77 int 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