ocb.c 1.8 KB

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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. #include <linux/ieee80211.h>
  11. #include <net/cfg80211.h>
  12. #include "nl80211.h"
  13. #include "core.h"
  14. #include "rdev-ops.h"
  15. int __cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
  16. struct net_device *dev,
  17. struct ocb_setup *setup)
  18. {
  19. struct wireless_dev *wdev = dev->ieee80211_ptr;
  20. int err;
  21. ASSERT_WDEV_LOCK(wdev);
  22. if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
  23. return -EOPNOTSUPP;
  24. if (!rdev->ops->join_ocb)
  25. return -EOPNOTSUPP;
  26. if (WARN_ON(!setup->chandef.chan))
  27. return -EINVAL;
  28. err = rdev_join_ocb(rdev, dev, setup);
  29. if (!err)
  30. wdev->chandef = setup->chandef;
  31. return err;
  32. }
  33. int cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
  34. struct net_device *dev,
  35. struct ocb_setup *setup)
  36. {
  37. struct wireless_dev *wdev = dev->ieee80211_ptr;
  38. int err;
  39. wdev_lock(wdev);
  40. err = __cfg80211_join_ocb(rdev, dev, setup);
  41. wdev_unlock(wdev);
  42. return err;
  43. }
  44. int __cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
  45. struct net_device *dev)
  46. {
  47. struct wireless_dev *wdev = dev->ieee80211_ptr;
  48. int err;
  49. ASSERT_WDEV_LOCK(wdev);
  50. if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
  51. return -EOPNOTSUPP;
  52. if (!rdev->ops->leave_ocb)
  53. return -EOPNOTSUPP;
  54. err = rdev_leave_ocb(rdev, dev);
  55. if (!err)
  56. memset(&wdev->chandef, 0, sizeof(wdev->chandef));
  57. return err;
  58. }
  59. int cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
  60. struct net_device *dev)
  61. {
  62. struct wireless_dev *wdev = dev->ieee80211_ptr;
  63. int err;
  64. wdev_lock(wdev);
  65. err = __cfg80211_leave_ocb(rdev, dev);
  66. wdev_unlock(wdev);
  67. return err;
  68. }