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crypto: arm/sha256-neon - Use API partial block handling

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Use the Crypto API partial block handling.

Also remove the unnecessary SIMD fallback path.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2025-04-18 10:59:52 +08:00
parent e2d0c74670
commit 83498139b6
1 changed files with 16 additions and 33 deletions
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49
arch/arm/crypto/sha256_neon_glue.c
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@ -9,69 +9,51 @@
* Copyright © 2014 Jussi Kivilinna <jussi.kivilinna@iki.fi>
*/
#include <asm/neon.h>
#include <crypto/internal/hash.h>
#include <crypto/internal/simd.h>
#include <linux/types.h>
#include <linux/string.h>
#include <crypto/sha2.h>
#include <crypto/sha256_base.h>
#include <asm/byteorder.h>
#include <asm/simd.h>
#include <asm/neon.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include "sha256_glue.h"
asmlinkage void sha256_block_data_order_neon(struct sha256_state *digest,
const u8 *data, int num_blks);
asmlinkage void sha256_block_data_order_neon(
struct crypto_sha256_state *digest, const u8 *data, int num_blks);
static int crypto_sha256_neon_update(struct shash_desc *desc, const u8 *data,
unsigned int len)
{
struct sha256_state *sctx = shash_desc_ctx(desc);
if (!crypto_simd_usable() ||
(sctx->count % SHA256_BLOCK_SIZE) + len < SHA256_BLOCK_SIZE)
return crypto_sha256_arm_update(desc, data, len);
int remain;
kernel_neon_begin();
sha256_base_do_update(desc, data, len, sha256_block_data_order_neon);
remain = sha256_base_do_update_blocks(desc, data, len,
sha256_block_data_order_neon);
kernel_neon_end();
return 0;
return remain;
}
static int crypto_sha256_neon_finup(struct shash_desc *desc, const u8 *data,
unsigned int len, u8 *out)
{
if (!crypto_simd_usable())
return crypto_sha256_arm_finup(desc, data, len, out);
kernel_neon_begin();
if (len)
sha256_base_do_update(desc, data, len,
sha256_block_data_order_neon);
sha256_base_do_finalize(desc, sha256_block_data_order_neon);
sha256_base_do_finup(desc, data, len, sha256_block_data_order_neon);
kernel_neon_end();
return sha256_base_finish(desc, out);
}
static int crypto_sha256_neon_final(struct shash_desc *desc, u8 *out)
{
return crypto_sha256_neon_finup(desc, NULL, 0, out);
}
struct shash_alg sha256_neon_algs[] = { {
.digestsize = SHA256_DIGEST_SIZE,
.init = sha256_base_init,
.update = crypto_sha256_neon_update,
.final = crypto_sha256_neon_final,
.finup = crypto_sha256_neon_finup,
.descsize = sizeof(struct sha256_state),
.descsize = sizeof(struct crypto_sha256_state),
.base = {
.cra_name = "sha256",
.cra_driver_name = "sha256-neon",
.cra_priority = 250,
.cra_flags = CRYPTO_AHASH_ALG_BLOCK_ONLY |
CRYPTO_AHASH_ALG_FINUP_MAX,
.cra_blocksize = SHA256_BLOCK_SIZE,
.cra_module = THIS_MODULE,
}
@ -79,13 +61,14 @@ struct shash_alg sha256_neon_algs[] = { {
.digestsize = SHA224_DIGEST_SIZE,
.init = sha224_base_init,
.update = crypto_sha256_neon_update,
.final = crypto_sha256_neon_final,
.finup = crypto_sha256_neon_finup,
.descsize = sizeof(struct sha256_state),
.descsize = sizeof(struct crypto_sha256_state),
.base = {
.cra_name = "sha224",
.cra_driver_name = "sha224-neon",
.cra_priority = 250,
.cra_flags = CRYPTO_AHASH_ALG_BLOCK_ONLY |
CRYPTO_AHASH_ALG_FINUP_MAX,
.cra_blocksize = SHA224_BLOCK_SIZE,
.cra_module = THIS_MODULE,
}