crypto: ahash - Add crypto_ahash_blocksize

Commit Message

Herbert Xu Oct. 19, 2015, 1:37 a.m. UTC

On Sun, Oct 18, 2015 at 05:23:30PM +0100, Russell King wrote:
> There's an easier way to get at the hash transform - rather than
> using crypto_ahash_tfm(ahash), we can get it directly from
> req->base.tfm.
> 
> Signed-off-by: Russell King <[e-mail]>

This should be converted to crypto_ahash_blocksize which doesn't
exist for some reason.  So I'm going to add it with the following
patch and then I'll change your patch to use it.

Thanks,

---8<---
This patch adds the missing helper crypto_ahash_blocksize which
returns the block size of an ahash algorithm.

Signed-off-by: Herbert Xu <[e-mail]>

Patch

diff --git a/include/crypto/hash.h b/include/crypto/hash.h
index 8e920b4..3d69c93 100644
--- a/include/crypto/hash.h
+++ b/include/crypto/hash.h
@@ -264,6 +264,20 @@  static inline unsigned int crypto_ahash_alignmask(
 	return crypto_tfm_alg_alignmask(crypto_ahash_tfm(tfm));
 }
 
+/**
+ * crypto_ahash_blocksize() - obtain block size for cipher
+ * @tfm: cipher handle
+ *
+ * The block size for the message digest cipher referenced with the cipher
+ * handle is returned.
+ *
+ * Return: block size of cipher
+ */
+static inline unsigned int crypto_ahash_blocksize(struct crypto_ahash *tfm)
+{
+	return crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm));
+}
+
 static inline struct hash_alg_common *__crypto_hash_alg_common(
 	struct crypto_alg *alg)
 {