[CRYPTO] blkcipher: Added blkcipher_walk_virt_block
This patch adds the helper blkcipher_walk_virt_block which is similar to
blkcipher_walk_virt but uses a supplied block size instead of the block
size of the block cipher. This is useful for CTR where the block size is
1 but we still want to walk by the block size of the underlying cipher.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h
index 4af72dc..b9b05d3 100644
--- a/include/crypto/algapi.h
+++ b/include/crypto/algapi.h
@@ -91,6 +91,7 @@
u8 *iv;
int flags;
+ unsigned int blocksize;
};
extern const struct crypto_type crypto_ablkcipher_type;
@@ -129,6 +130,9 @@
struct blkcipher_walk *walk);
int blkcipher_walk_phys(struct blkcipher_desc *desc,
struct blkcipher_walk *walk);
+int blkcipher_walk_virt_block(struct blkcipher_desc *desc,
+ struct blkcipher_walk *walk,
+ unsigned int blocksize);
static inline void *crypto_tfm_ctx_aligned(struct crypto_tfm *tfm)
{