crypto: x86/morus640 - convert to use AEAD SIMD helpers

Convert the x86 implementation of MORUS-640 to use the AEAD SIMD
helpers, rather than hand-rolling the same functionality.  This
simplifies the code and also fixes the bug where the user-provided
aead_request is modified.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

arch/x86/crypto/morus640-sse2-glue.c

@@ -12,6 +12,7 @@
  */
 
 #include <crypto/internal/aead.h>
+#include <crypto/internal/simd.h>
 #include <crypto/morus640_glue.h>
 #include <linux/module.h>
 #include <asm/fpu/api.h>
@@ -35,7 +36,9 @@ asmlinkage void crypto_morus640_sse2_dec_tail(void *state, const void *src,
 asmlinkage void crypto_morus640_sse2_final(void *state, void *tag_xor,
 					   u64 assoclen, u64 cryptlen);
 
-MORUS640_DECLARE_ALGS(sse2, "morus640-sse2", 400);
+MORUS640_DECLARE_ALG(sse2, "morus640-sse2", 400);
+
+static struct simd_aead_alg *simd_alg;
 
 static int __init crypto_morus640_sse2_module_init(void)
 {
@@ -43,14 +46,13 @@ static int __init crypto_morus640_sse2_module_init(void)
 	    !cpu_has_xfeatures(XFEATURE_MASK_SSE, NULL))
 		return -ENODEV;
 
-	return crypto_register_aeads(crypto_morus640_sse2_algs,
-				     ARRAY_SIZE(crypto_morus640_sse2_algs));
+	return simd_register_aeads_compat(&crypto_morus640_sse2_alg, 1,
+					  &simd_alg);
 }
 
 static void __exit crypto_morus640_sse2_module_exit(void)
 {
-	crypto_unregister_aeads(crypto_morus640_sse2_algs,
-				ARRAY_SIZE(crypto_morus640_sse2_algs));
+	simd_unregister_aeads(&crypto_morus640_sse2_alg, 1, &simd_alg);
 }
 
 module_init(crypto_morus640_sse2_module_init);

arch/x86/crypto/morus640_glue.c

@@ -11,7 +11,6 @@
  * any later version.
  */
 
-#include <crypto/cryptd.h>
 #include <crypto/internal/aead.h>
 #include <crypto/internal/skcipher.h>
 #include <crypto/morus640_glue.h>
@@ -200,90 +199,6 @@ void crypto_morus640_glue_init_ops(struct crypto_aead *aead,
 }
 EXPORT_SYMBOL_GPL(crypto_morus640_glue_init_ops);
 
-int cryptd_morus640_glue_setkey(struct crypto_aead *aead, const u8 *key,
-				unsigned int keylen)
-{
-	struct cryptd_aead **ctx = crypto_aead_ctx(aead);
-	struct cryptd_aead *cryptd_tfm = *ctx;
-
-	return crypto_aead_setkey(&cryptd_tfm->base, key, keylen);
-}
-EXPORT_SYMBOL_GPL(cryptd_morus640_glue_setkey);
-
-int cryptd_morus640_glue_setauthsize(struct crypto_aead *aead,
-				     unsigned int authsize)
-{
-	struct cryptd_aead **ctx = crypto_aead_ctx(aead);
-	struct cryptd_aead *cryptd_tfm = *ctx;
-
-	return crypto_aead_setauthsize(&cryptd_tfm->base, authsize);
-}
-EXPORT_SYMBOL_GPL(cryptd_morus640_glue_setauthsize);
-
-int cryptd_morus640_glue_encrypt(struct aead_request *req)
-{
-	struct crypto_aead *aead = crypto_aead_reqtfm(req);
-	struct cryptd_aead **ctx = crypto_aead_ctx(aead);
-	struct cryptd_aead *cryptd_tfm = *ctx;
-
-	aead = &cryptd_tfm->base;
-	if (irq_fpu_usable() && (!in_atomic() ||
-				 !cryptd_aead_queued(cryptd_tfm)))
-		aead = cryptd_aead_child(cryptd_tfm);
-
-	aead_request_set_tfm(req, aead);
-
-	return crypto_aead_encrypt(req);
-}
-EXPORT_SYMBOL_GPL(cryptd_morus640_glue_encrypt);
-
-int cryptd_morus640_glue_decrypt(struct aead_request *req)
-{
-	struct crypto_aead *aead = crypto_aead_reqtfm(req);
-	struct cryptd_aead **ctx = crypto_aead_ctx(aead);
-	struct cryptd_aead *cryptd_tfm = *ctx;
-
-	aead = &cryptd_tfm->base;
-	if (irq_fpu_usable() && (!in_atomic() ||
-				 !cryptd_aead_queued(cryptd_tfm)))
-		aead = cryptd_aead_child(cryptd_tfm);
-
-	aead_request_set_tfm(req, aead);
-
-	return crypto_aead_decrypt(req);
-}
-EXPORT_SYMBOL_GPL(cryptd_morus640_glue_decrypt);
-
-int cryptd_morus640_glue_init_tfm(struct crypto_aead *aead)
-{
-	struct cryptd_aead *cryptd_tfm;
-	struct cryptd_aead **ctx = crypto_aead_ctx(aead);
-	const char *name = crypto_aead_alg(aead)->base.cra_driver_name;
-	char internal_name[CRYPTO_MAX_ALG_NAME];
-
-	if (snprintf(internal_name, CRYPTO_MAX_ALG_NAME, "__%s", name)
-			>= CRYPTO_MAX_ALG_NAME)
-		return -ENAMETOOLONG;
-
-	cryptd_tfm = cryptd_alloc_aead(internal_name, CRYPTO_ALG_INTERNAL,
-				       CRYPTO_ALG_INTERNAL);
-	if (IS_ERR(cryptd_tfm))
-		return PTR_ERR(cryptd_tfm);
-
-	*ctx = cryptd_tfm;
-	crypto_aead_set_reqsize(aead, crypto_aead_reqsize(&cryptd_tfm->base));
-	return 0;
-}
-EXPORT_SYMBOL_GPL(cryptd_morus640_glue_init_tfm);
-
-void cryptd_morus640_glue_exit_tfm(struct crypto_aead *aead)
-{
-	struct cryptd_aead **ctx = crypto_aead_ctx(aead);
-
-	cryptd_free_aead(*ctx);
-}
-EXPORT_SYMBOL_GPL(cryptd_morus640_glue_exit_tfm);
-
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Ondrej Mosnacek <omosnacek@gmail.com>");
 MODULE_DESCRIPTION("MORUS-640 AEAD mode -- glue for x86 optimizations");

crypto/Kconfig

@@ -340,7 +340,7 @@ config CRYPTO_MORUS640_GLUE
 	tristate
 	depends on X86
 	select CRYPTO_AEAD
-	select CRYPTO_CRYPTD
+	select CRYPTO_SIMD
 	help
 	  Common glue for SIMD optimizations of the MORUS-640 dedicated AEAD
 	  algorithm.

include/crypto/morus640_glue.h

@@ -47,16 +47,7 @@ int crypto_morus640_glue_setauthsize(struct crypto_aead *tfm,
 int crypto_morus640_glue_encrypt(struct aead_request *req);
 int crypto_morus640_glue_decrypt(struct aead_request *req);
 
-int cryptd_morus640_glue_setkey(struct crypto_aead *aead, const u8 *key,
-				unsigned int keylen);
-int cryptd_morus640_glue_setauthsize(struct crypto_aead *aead,
-				     unsigned int authsize);
-int cryptd_morus640_glue_encrypt(struct aead_request *req);
-int cryptd_morus640_glue_decrypt(struct aead_request *req);
-int cryptd_morus640_glue_init_tfm(struct crypto_aead *aead);
-void cryptd_morus640_glue_exit_tfm(struct crypto_aead *aead);
-
-#define MORUS640_DECLARE_ALGS(id, driver_name, priority) \
+#define MORUS640_DECLARE_ALG(id, driver_name, priority) \
 	static const struct morus640_glue_ops crypto_morus640_##id##_ops = {\
 		.init = crypto_morus640_##id##_init, \
 		.ad = crypto_morus640_##id##_ad, \
@@ -77,8 +68,7 @@ void cryptd_morus640_glue_exit_tfm(struct crypto_aead *aead);
 	{ \
 	} \
 	\
-	static struct aead_alg crypto_morus640_##id##_algs[] = {\
-		{ \
+	static struct aead_alg crypto_morus640_##id##_alg = {\
 		.setkey = crypto_morus640_glue_setkey, \
 		.setauthsize = crypto_morus640_glue_setauthsize, \
 		.encrypt = crypto_morus640_glue_encrypt, \
@@ -95,38 +85,13 @@ void cryptd_morus640_glue_exit_tfm(struct crypto_aead *aead);
 			.cra_blocksize = 1, \
 			.cra_ctxsize = sizeof(struct morus640_ctx), \
 			.cra_alignmask = 0, \
+			.cra_priority = priority, \
 			\
 			.cra_name = "__morus640", \
 			.cra_driver_name = "__"driver_name, \
 			\
 			.cra_module = THIS_MODULE, \
 		} \
-		}, { \
-			.setkey = cryptd_morus640_glue_setkey, \
-			.setauthsize = cryptd_morus640_glue_setauthsize, \
-			.encrypt = cryptd_morus640_glue_encrypt, \
-			.decrypt = cryptd_morus640_glue_decrypt, \
-			.init = cryptd_morus640_glue_init_tfm, \
-			.exit = cryptd_morus640_glue_exit_tfm, \
-			\
-			.ivsize = MORUS_NONCE_SIZE, \
-			.maxauthsize = MORUS_MAX_AUTH_SIZE, \
-			.chunksize = MORUS640_BLOCK_SIZE, \
-			\
-			.base = { \
-				.cra_flags = CRYPTO_ALG_ASYNC, \
-				.cra_blocksize = 1, \
-				.cra_ctxsize = sizeof(struct crypto_aead *), \
-				.cra_alignmask = 0, \
-				\
-				.cra_priority = priority, \
-				\
-				.cra_name = "morus640", \
-				.cra_driver_name = driver_name, \
-				\
-				.cra_module = THIS_MODULE, \
-			} \
-		} \
 	}
 
 #endif /* _CRYPTO_MORUS640_GLUE_H */