crypto: akcipher - Move reqsize into tfm

The value of reqsize cannot be determined in case of fallbacks.
Therefore it must be stored in the tfm and not the alg object.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

include/crypto/akcipher.h

@@ -43,9 +43,12 @@ struct akcipher_request {
  * struct crypto_akcipher - user-instantiated objects which encapsulate
  * algorithms and core processing logic
  *
+ * @reqsize:	Request context size required by algorithm implementation
  * @base:	Common crypto API algorithm data structure
  */
 struct crypto_akcipher {
+	unsigned int reqsize;
+
 	struct crypto_tfm base;
 };
 
@@ -86,7 +89,6 @@ struct crypto_akcipher {
  *		counterpart to @init, used to remove various changes set in
  *		@init.
  *
- * @reqsize:	Request context size required by algorithm implementation
  * @base:	Common crypto API algorithm data structure
  */
 struct akcipher_alg {
@@ -102,7 +104,6 @@ struct akcipher_alg {
 	int (*init)(struct crypto_akcipher *tfm);
 	void (*exit)(struct crypto_akcipher *tfm);
 
-	unsigned int reqsize;
 	struct crypto_alg base;
 };
 
@@ -155,7 +156,7 @@ static inline struct akcipher_alg *crypto_akcipher_alg(
 
 static inline unsigned int crypto_akcipher_reqsize(struct crypto_akcipher *tfm)
 {
-	return crypto_akcipher_alg(tfm)->reqsize;
+	return tfm->reqsize;
 }
 
 static inline void akcipher_request_set_tfm(struct akcipher_request *req,

include/crypto/internal/akcipher.h

@@ -36,7 +36,7 @@ static inline void *akcipher_request_ctx(struct akcipher_request *req)
 static inline void akcipher_set_reqsize(struct crypto_akcipher *akcipher,
 					unsigned int reqsize)
 {
-	crypto_akcipher_alg(akcipher)->reqsize = reqsize;
+	akcipher->reqsize = reqsize;
 }
 
 static inline void *akcipher_tfm_ctx(struct crypto_akcipher *tfm)