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 <herbert@gondor.apana.org.au>
diff --git a/crypto/aead.c b/crypto/aead.c
index 8cdea89..4bab3cf 100644
--- a/crypto/aead.c
+++ b/crypto/aead.c
@@ -174,6 +174,14 @@
return 0;
}
+static void crypto_aead_exit_tfm(struct crypto_tfm *tfm)
+{
+ struct crypto_aead *aead = __crypto_aead_cast(tfm);
+ struct aead_alg *alg = crypto_aead_alg(aead);
+
+ alg->exit(aead);
+}
+
static int crypto_aead_init_tfm(struct crypto_tfm *tfm)
{
struct crypto_aead *aead = __crypto_aead_cast(tfm);
@@ -189,6 +197,12 @@
aead->child = __crypto_aead_cast(tfm);
aead->authsize = alg->maxauthsize;
+ if (alg->exit)
+ aead->base.exit = crypto_aead_exit_tfm;
+
+ if (alg->init)
+ return alg->init(aead);
+
return 0;
}