From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Fri, 18 Apr 2025 02:59:25 +0000 (+0800)
Subject: crypto: arm/sha1-neon - Use API partial block handling
X-Git-Tag: block-6.16-20250606~34^2~216
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=adfb79164c7959ae43f93f54430e3dee0ffab404;p=linux-block.git

crypto: arm/sha1-neon - Use API partial block handling

Use the Crypto API partial block handling.

Also remove the unnecessary SIMD fallback path.

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

diff --git a/arch/arm/crypto/sha1_neon_glue.c b/arch/arm/crypto/sha1_neon_glue.c
index 9c70b87e69f7..d321850f22a6 100644
--- a/arch/arm/crypto/sha1_neon_glue.c
+++ b/arch/arm/crypto/sha1_neon_glue.c
@@ -13,18 +13,12 @@
  *  Copyright (c) Chandramouli Narayanan <mouli@linux.intel.com>
  */
 
+#include <asm/neon.h>
 #include <crypto/internal/hash.h>
-#include <crypto/internal/simd.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/mm.h>
-#include <linux/types.h>
 #include <crypto/sha1.h>
 #include <crypto/sha1_base.h>
-#include <asm/neon.h>
-#include <asm/simd.h>
-
-#include "sha1.h"
+#include <linux/kernel.h>
+#include <linux/module.h>
 
 asmlinkage void sha1_transform_neon(struct sha1_state *state_h,
 				    const u8 *data, int rounds);
@@ -32,50 +26,37 @@ asmlinkage void sha1_transform_neon(struct sha1_state *state_h,
 static int sha1_neon_update(struct shash_desc *desc, const u8 *data,
 			  unsigned int len)
 {
-	struct sha1_state *sctx = shash_desc_ctx(desc);
-
-	if (!crypto_simd_usable() ||
-	    (sctx->count % SHA1_BLOCK_SIZE) + len < SHA1_BLOCK_SIZE)
-		return sha1_update_arm(desc, data, len);
+	int remain;
 
 	kernel_neon_begin();
-	sha1_base_do_update(desc, data, len, sha1_transform_neon);
+	remain = sha1_base_do_update_blocks(desc, data, len,
+					    sha1_transform_neon);
 	kernel_neon_end();
 
-	return 0;
+	return remain;
 }
 
 static int sha1_neon_finup(struct shash_desc *desc, const u8 *data,
 			   unsigned int len, u8 *out)
 {
-	if (!crypto_simd_usable())
-		return sha1_finup_arm(desc, data, len, out);
-
 	kernel_neon_begin();
-	if (len)
-		sha1_base_do_update(desc, data, len, sha1_transform_neon);
-	sha1_base_do_finalize(desc, sha1_transform_neon);
+	sha1_base_do_finup(desc, data, len, sha1_transform_neon);
 	kernel_neon_end();
 
 	return sha1_base_finish(desc, out);
 }
 
-static int sha1_neon_final(struct shash_desc *desc, u8 *out)
-{
-	return sha1_neon_finup(desc, NULL, 0, out);
-}
-
 static struct shash_alg alg = {
 	.digestsize	=	SHA1_DIGEST_SIZE,
 	.init		=	sha1_base_init,
 	.update		=	sha1_neon_update,
-	.final		=	sha1_neon_final,
 	.finup		=	sha1_neon_finup,
-	.descsize	=	sizeof(struct sha1_state),
+	.descsize		= SHA1_STATE_SIZE,
 	.base		=	{
 		.cra_name		= "sha1",
 		.cra_driver_name	= "sha1-neon",
 		.cra_priority		= 250,
+		.cra_flags		= CRYPTO_AHASH_ALG_BLOCK_ONLY,
 		.cra_blocksize		= SHA1_BLOCK_SIZE,
 		.cra_module		= THIS_MODULE,
 	}