llsec.h 2.8 KB

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  1. /* SPDX-License-Identifier: GPL-2.0-only */
  2. /*
  3. * Copyright (C) 2014 Fraunhofer ITWM
  4. *
  5. * Written by:
  6. * Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
  7. */
  8. #ifndef MAC802154_LLSEC_H
  9. #define MAC802154_LLSEC_H
  10. #include <linux/slab.h>
  11. #include <linux/hashtable.h>
  12. #include <linux/kref.h>
  13. #include <linux/spinlock.h>
  14. #include <net/af_ieee802154.h>
  15. #include <net/ieee802154_netdev.h>
  16. struct mac802154_llsec_key {
  17. struct ieee802154_llsec_key key;
  18. /* one tfm for each authsize (4/8/16) */
  19. struct crypto_aead *tfm[3];
  20. struct crypto_sync_skcipher *tfm0;
  21. struct kref ref;
  22. };
  23. struct mac802154_llsec_device_key {
  24. struct ieee802154_llsec_device_key devkey;
  25. struct rcu_head rcu;
  26. };
  27. struct mac802154_llsec_device {
  28. struct ieee802154_llsec_device dev;
  29. struct hlist_node bucket_s;
  30. struct hlist_node bucket_hw;
  31. /* protects dev.frame_counter and the elements of dev.keys */
  32. spinlock_t lock;
  33. struct rcu_head rcu;
  34. };
  35. struct mac802154_llsec_seclevel {
  36. struct ieee802154_llsec_seclevel level;
  37. struct rcu_head rcu;
  38. };
  39. struct mac802154_llsec {
  40. struct ieee802154_llsec_params params;
  41. struct ieee802154_llsec_table table;
  42. DECLARE_HASHTABLE(devices_short, 6);
  43. DECLARE_HASHTABLE(devices_hw, 6);
  44. /* protects params, all other fields are fine with RCU */
  45. rwlock_t lock;
  46. };
  47. void mac802154_llsec_init(struct mac802154_llsec *sec);
  48. void mac802154_llsec_destroy(struct mac802154_llsec *sec);
  49. int mac802154_llsec_get_params(struct mac802154_llsec *sec,
  50. struct ieee802154_llsec_params *params);
  51. int mac802154_llsec_set_params(struct mac802154_llsec *sec,
  52. const struct ieee802154_llsec_params *params,
  53. int changed);
  54. int mac802154_llsec_key_add(struct mac802154_llsec *sec,
  55. const struct ieee802154_llsec_key_id *id,
  56. const struct ieee802154_llsec_key *key);
  57. int mac802154_llsec_key_del(struct mac802154_llsec *sec,
  58. const struct ieee802154_llsec_key_id *key);
  59. int mac802154_llsec_dev_add(struct mac802154_llsec *sec,
  60. const struct ieee802154_llsec_device *dev);
  61. int mac802154_llsec_dev_del(struct mac802154_llsec *sec,
  62. __le64 device_addr);
  63. int mac802154_llsec_devkey_add(struct mac802154_llsec *sec,
  64. __le64 dev_addr,
  65. const struct ieee802154_llsec_device_key *key);
  66. int mac802154_llsec_devkey_del(struct mac802154_llsec *sec,
  67. __le64 dev_addr,
  68. const struct ieee802154_llsec_device_key *key);
  69. int mac802154_llsec_seclevel_add(struct mac802154_llsec *sec,
  70. const struct ieee802154_llsec_seclevel *sl);
  71. int mac802154_llsec_seclevel_del(struct mac802154_llsec *sec,
  72. const struct ieee802154_llsec_seclevel *sl);
  73. int mac802154_llsec_encrypt(struct mac802154_llsec *sec, struct sk_buff *skb);
  74. int mac802154_llsec_decrypt(struct mac802154_llsec *sec, struct sk_buff *skb);
  75. #endif /* MAC802154_LLSEC_H */