LXR linux/net/wireless/ocb.c

   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
  17int __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
  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