2 files changed, 76 insertions, 4 deletions

diff --git a/include/crypto/aead.h b/include/crypto/aead.h
index aebf57dfb903..177e6f46e2bb 100644
--- a/include/crypto/aead.h
+++ b/include/crypto/aead.h
@@ -17,8 +17,6 @@
 #include <linux/kernel.h>
 #include <linux/slab.h>
 
-#define aead_alg old_aead_alg
-
 /**
  * DOC: Authenticated Encryption With Associated Data (AEAD) Cipher API
  *
@@ -92,7 +90,48 @@ struct aead_givcrypt_request {
 	struct aead_request areq;
 };
 
+/**
+ * struct aead_alg - AEAD cipher definition
+ * @maxauthsize: Set the maximum authentication tag size supported by the
+ *		 transformation. A transformation may support smaller tag sizes.
+ *		 As the authentication tag is a message digest to ensure the
+ *		 integrity of the encrypted data, a consumer typically wants the
+ *		 largest authentication tag possible as defined by this
+ *		 variable.
+ * @setauthsize: Set authentication size for the AEAD transformation. This
+ *		 function is used to specify the consumer requested size of the
+ * 		 authentication tag to be either generated by the transformation
+ *		 during encryption or the size of the authentication tag to be
+ *		 supplied during the decryption operation. This function is also
+ *		 responsible for checking the authentication tag size for
+ *		 validity.
+ * @setkey: see struct ablkcipher_alg
+ * @encrypt: see struct ablkcipher_alg
+ * @decrypt: see struct ablkcipher_alg
+ * @geniv: see struct ablkcipher_alg
+ * @ivsize: see struct ablkcipher_alg
+ *
+ * All fields except @ivsize is mandatory and must be filled.
+ */
+struct aead_alg {
+	int (*setkey)(struct crypto_aead *tfm, const u8 *key,
+	              unsigned int keylen);
+	int (*setauthsize)(struct crypto_aead *tfm, unsigned int authsize);
+	int (*encrypt)(struct aead_request *req);
+	int (*decrypt)(struct aead_request *req);
+
+	const char *geniv;
+
+	unsigned int ivsize;
+	unsigned int maxauthsize;
+
+	struct crypto_alg base;
+};
+
 struct crypto_aead {
+	int (*setkey)(struct crypto_aead *tfm, const u8 *key,
+	              unsigned int keylen);
+	int (*setauthsize)(struct crypto_aead *tfm, unsigned int authsize);
 	int (*encrypt)(struct aead_request *req);
 	int (*decrypt)(struct aead_request *req);
 	int (*givencrypt)(struct aead_givcrypt_request *req);
@@ -102,6 +141,7 @@ struct crypto_aead {
 
 	unsigned int ivsize;
 	unsigned int authsize;
+	unsigned int maxauthsize;
 	unsigned int reqsize;
 
 	struct crypto_tfm base;
diff --git a/include/crypto/internal/aead.h b/include/crypto/internal/aead.h
index 4614f795f8bc..6cd31519c4f6 100644
--- a/include/crypto/internal/aead.h
+++ b/include/crypto/internal/aead.h
@@ -19,6 +19,10 @@
 
 struct rtattr;
 
+struct aead_instance {
+	struct aead_alg alg;
+};
+
 struct crypto_aead_spawn {
 	struct crypto_spawn base;
 };
@@ -33,7 +37,8 @@ static inline struct old_aead_alg *crypto_old_aead_alg(struct crypto_aead *tfm)
 
 static inline struct aead_alg *crypto_aead_alg(struct crypto_aead *tfm)
 {
-	return &crypto_aead_tfm(tfm)->__crt_alg->cra_aead;
+	return container_of(crypto_aead_tfm(tfm)->__crt_alg,
+			    struct aead_alg, base);
 }
 
 static inline void *crypto_aead_ctx(struct crypto_aead *tfm)
@@ -47,6 +52,22 @@ static inline struct crypto_instance *crypto_aead_alg_instance(
 	return crypto_tfm_alg_instance(&aead->base);
 }
 
+static inline struct crypto_instance *aead_crypto_instance(
+	struct aead_instance *inst)
+{
+	return container_of(&inst->alg.base, struct crypto_instance, alg);
+}
+
+static inline struct aead_instance *aead_instance(struct crypto_instance *inst)
+{
+	return container_of(&inst->alg, struct aead_instance, alg.base);
+}
+
+static inline void *aead_instance_ctx(struct aead_instance *inst)
+{
+	return crypto_instance_ctx(aead_crypto_instance(inst));
+}
+
 static inline void *aead_request_ctx(struct aead_request *req)
 {
 	return req->__ctx;
@@ -84,6 +105,12 @@ static inline struct crypto_alg *crypto_aead_spawn_alg(
 	return spawn->base.alg;
 }
 
+static inline struct aead_alg *crypto_spawn_aead_alg(
+	struct crypto_aead_spawn *spawn)
+{
+	return container_of(spawn->base.alg, struct aead_alg, base);
+}
+
 static inline struct crypto_aead *crypto_spawn_aead(
 	struct crypto_aead_spawn *spawn)
 {
@@ -121,8 +148,13 @@ static inline void crypto_aead_set_reqsize(struct crypto_aead *aead,
 
 static inline unsigned int crypto_aead_maxauthsize(struct crypto_aead *aead)
 {
-	return crypto_old_aead_alg(aead)->maxauthsize;
+	return aead->maxauthsize;
 }
 
+int crypto_register_aead(struct aead_alg *alg);
+int crypto_unregister_aead(struct aead_alg *alg);
+int aead_register_instance(struct crypto_template *tmpl,
+			   struct aead_instance *inst);
+
 #endif	/* _CRYPTO_INTERNAL_AEAD_H */