From 5eb8ec6dc857d5027bc8cf7268a199107a583ae5 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Thu, 28 May 2015 22:07:53 +0800 Subject: crypto: aead - Add type-safe init/exit functions As it stands the only non-type safe functions left in the new AEAD interface are the cra_init/cra_exit functions. It means exposing the ugly __crypto_aead_cast to every AEAD implementor. This patch adds type-safe init/exit functions to AEAD. Existing algorithms are unaffected while new implementations can simply fill in these two instead of cra_init/cra_exit. Signed-off-by: Herbert Xu --- include/crypto/aead.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/crypto/aead.h') diff --git a/include/crypto/aead.h b/include/crypto/aead.h index 1a273bc5656c..5cb0066be30b 100644 --- a/include/crypto/aead.h +++ b/include/crypto/aead.h @@ -109,6 +109,17 @@ struct aead_givcrypt_request { * @decrypt: see struct ablkcipher_alg * @geniv: see struct ablkcipher_alg * @ivsize: see struct ablkcipher_alg + * @init: Initialize the cryptographic transformation object. This function + * is used to initialize the cryptographic transformation object. + * This function is called only once at the instantiation time, right + * after the transformation context was allocated. In case the + * cryptographic hardware has some special requirements which need to + * be handled by software, this function shall check for the precise + * requirement of the transformation and put any software fallbacks + * in place. + * @exit: Deinitialize the cryptographic transformation object. This is a + * counterpart to @init, used to remove various changes set in + * @init. * * All fields except @ivsize is mandatory and must be filled. */ @@ -118,6 +129,8 @@ struct aead_alg { int (*setauthsize)(struct crypto_aead *tfm, unsigned int authsize); int (*encrypt)(struct aead_request *req); int (*decrypt)(struct aead_request *req); + int (*init)(struct crypto_aead *tfm); + void (*exit)(struct crypto_aead *tfm); const char *geniv; -- cgit v1.2.3-55-g7522