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TOMOYO Linux Cross Reference
Linux/net/wireless/ocb.c

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  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 
 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 
 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 
 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 
 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 

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