crypto: ahash - Add unaligned handling and default operations

This patch exports the finup operation where available and adds
a default finup operation for ahash.  The operations final, finup
and digest also will now deal with unaligned result pointers by
copying it.  Finally export/import operations are will now be
exported too.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 8 insertions, 15 deletions

diff --git a/include/crypto/hash.h b/include/crypto/hash.h
index 45c2bddfdf32..3e89ce16b59c 100644
--- a/include/crypto/hash.h
+++ b/include/crypto/hash.h
@@ -31,6 +31,9 @@ struct ahash_request {
         struct scatterlist *src;
         u8 *result;
 
+        /* This field may only be used by the ahash API code. */
+        void *priv;
+
         void *__ctx[] CRYPTO_MINALIGN_ATTR;
 };
 
@@ -175,16 +178,11 @@ static inline void *ahash_request_ctx(struct ahash_request *req)
         return req->__ctx;
 }
 
-static inline int crypto_ahash_setkey(struct crypto_ahash *tfm,
-                                      const u8 *key, unsigned int keylen)
-{
-        return tfm->setkey(tfm, key, keylen);
-}
-
-static inline int crypto_ahash_digest(struct ahash_request *req)
-{
-        return crypto_ahash_reqtfm(req)->digest(req);
-}
+int crypto_ahash_setkey(struct crypto_ahash *tfm, const u8 *key,
+                        unsigned int keylen);
+int crypto_ahash_finup(struct ahash_request *req);
+int crypto_ahash_final(struct ahash_request *req);
+int crypto_ahash_digest(struct ahash_request *req);
 
 static inline int crypto_ahash_export(struct ahash_request *req, void *out)
 {
@@ -206,11 +204,6 @@ static inline int crypto_ahash_update(struct ahash_request *req)
         return crypto_ahash_reqtfm(req)->update(req);
 }
 
-static inline int crypto_ahash_final(struct ahash_request *req)
-{
-        return crypto_ahash_reqtfm(req)->final(req);
-}
-
 static inline void ahash_request_set_tfm(struct ahash_request *req,
                                          struct crypto_ahash *tfm)
 {