/drivers/staging/rtl8192u/ieee80211/crypto_compat.h

https://bitbucket.org/wisechild/galaxy-nexus · C++ Header · 60 lines · 38 code · 10 blank · 12 comment · 7 complexity · dbc86f226320a6d4d51621c5b0d23dbf MD5 · raw file 

    

  1. /*
    2. 

  2.  * Header file to maintain compatibility among different kernel versions.
    3. 

  3.  *
    4. 

  4.  * Copyright (c) 2004-2006  <lawrence_wang@realsil.com.cn>
    5. 

  5.  *
    6. 

  6.  * This program is free software; you can redistribute it and/or modify
    7. 

  7.  * it under the terms of the GNU General Public License version 2 as
    8. 

  8.  * published by the Free Software Foundation. See README and COPYING for
    9. 

  9.  * more details.
    10. 

  10.  */
    11. 

  11. 

  12. #include <linux/crypto.h>
    13. 

  13. 

  14. static inline int crypto_cipher_encrypt(struct crypto_tfm *tfm,
    15. 

  15. 					struct scatterlist *dst,
    16. 

  16. 					struct scatterlist *src,
    17. 

  17. 					unsigned int nbytes)
    18. 

  18. {
    19. 

  19. 	BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
    20. 

  20. 	return tfm->crt_cipher.cit_encrypt(tfm, dst, src, nbytes);
    21. 

  21. }
    22. 

  22. 

  23. 

  24. static inline int crypto_cipher_decrypt(struct crypto_tfm *tfm,
    25. 

  25. 					struct scatterlist *dst,
    26. 

  26. 					struct scatterlist *src,
    27. 

  27. 					unsigned int nbytes)
    28. 

  28. {
    29. 

  29. 	BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
    30. 

  30. 	return tfm->crt_cipher.cit_decrypt(tfm, dst, src, nbytes);
    31. 

  31. }
    32. 

  32. 

  33.  struct crypto_tfm *crypto_alloc_tfm(const char *name, u32 flags)
    34. 

  34. {
    35. 

  35. 	struct crypto_tfm *tfm = NULL;
    36. 

  36. 	int err;
    37. 

  37. 	printk("call crypto_alloc_tfm!!!\n");
    38. 

  38. 	do {
    39. 

  39. 		struct crypto_alg *alg;
    40. 

  40. 

  41. 		alg = crypto_alg_mod_lookup(name, 0, CRYPTO_ALG_ASYNC);
    42. 

  42. 		err = PTR_ERR(alg);
    43. 

  43. 		if (IS_ERR(alg))
    44. 

  44. 			continue;
    45. 

  45. 

  46. 		tfm = __crypto_alloc_tfm(alg, flags);
    47. 

  47. 		err = 0;
    48. 

  48. 		if (IS_ERR(tfm)) {
    49. 

  49. 			crypto_mod_put(alg);
    50. 

  50. 			err = PTR_ERR(tfm);
    51. 

  51. 			tfm = NULL;
    52. 

  52. 		}
    53. 

  53. 	} while (err == -EAGAIN && !signal_pending(current));
    54. 

  54. 

  55. 	return tfm;
    56. 

  56. }
    57. 

  57. //EXPORT_SYMBOL_GPL(crypto_alloc_tfm);
    58. 

  58. //EXPORT_SYMBOL_GPL(crypto_free_tfm);
    59.