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crypto: arm64/sha512-ce - 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 11:00:34 +08:00
parent 10e6f26ec6
commit f294a6d9e9
1 changed files with 12 additions and 37 deletions
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49
arch/arm64/crypto/sha512-ce-glue.c
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@ -10,14 +10,11 @@
*/
#include <asm/neon.h>
#include <asm/simd.h>
#include <linux/unaligned.h>
#include <crypto/internal/hash.h>
#include <crypto/internal/simd.h>
#include <crypto/sha2.h>
#include <crypto/sha512_base.h>
#include <linux/cpufeature.h>
#include <linux/crypto.h>
#include <linux/kernel.h>
#include <linux/module.h>
MODULE_DESCRIPTION("SHA-384/SHA-512 secure hash using ARMv8 Crypto Extensions");
@ -29,12 +26,10 @@ MODULE_ALIAS_CRYPTO("sha512");
asmlinkage int __sha512_ce_transform(struct sha512_state *sst, u8 const *src,
int blocks);
asmlinkage void sha512_block_data_order(u64 *digest, u8 const *src, int blocks);
static void sha512_ce_transform(struct sha512_state *sst, u8 const *src,
int blocks)
{
while (blocks) {
do {
int rem;
kernel_neon_begin();
@ -42,67 +37,47 @@ static void sha512_ce_transform(struct sha512_state *sst, u8 const *src,
kernel_neon_end();
src += (blocks - rem) * SHA512_BLOCK_SIZE;
blocks = rem;
}
}
static void sha512_arm64_transform(struct sha512_state *sst, u8 const *src,
int blocks)
{
sha512_block_data_order(sst->state, src, blocks);
} while (blocks);
}
static int sha512_ce_update(struct shash_desc *desc, const u8 *data,
unsigned int len)
{
sha512_block_fn *fn = crypto_simd_usable() ? sha512_ce_transform
: sha512_arm64_transform;
sha512_base_do_update(desc, data, len, fn);
return 0;
return sha512_base_do_update_blocks(desc, data, len,
sha512_ce_transform);
}
static int sha512_ce_finup(struct shash_desc *desc, const u8 *data,
unsigned int len, u8 *out)
{
sha512_block_fn *fn = crypto_simd_usable() ? sha512_ce_transform
: sha512_arm64_transform;
sha512_base_do_update(desc, data, len, fn);
sha512_base_do_finalize(desc, fn);
return sha512_base_finish(desc, out);
}
static int sha512_ce_final(struct shash_desc *desc, u8 *out)
{
sha512_block_fn *fn = crypto_simd_usable() ? sha512_ce_transform
: sha512_arm64_transform;
sha512_base_do_finalize(desc, fn);
sha512_base_do_finup(desc, data, len, sha512_ce_transform);
return sha512_base_finish(desc, out);
}
static struct shash_alg algs[] = { {
.init = sha384_base_init,
.update = sha512_ce_update,
.final = sha512_ce_final,
.finup = sha512_ce_finup,
.descsize = sizeof(struct sha512_state),
.descsize = SHA512_STATE_SIZE,
.digestsize = SHA384_DIGEST_SIZE,
.base.cra_name = "sha384",
.base.cra_driver_name = "sha384-ce",
.base.cra_priority = 200,
.base.cra_flags = CRYPTO_AHASH_ALG_BLOCK_ONLY |
CRYPTO_AHASH_ALG_FINUP_MAX,
.base.cra_blocksize = SHA512_BLOCK_SIZE,
.base.cra_module = THIS_MODULE,
}, {
.init = sha512_base_init,
.update = sha512_ce_update,
.final = sha512_ce_final,
.finup = sha512_ce_finup,
.descsize = sizeof(struct sha512_state),
.descsize = SHA512_STATE_SIZE,
.digestsize = SHA512_DIGEST_SIZE,
.base.cra_name = "sha512",
.base.cra_driver_name = "sha512-ce",
.base.cra_priority = 200,
.base.cra_flags = CRYPTO_AHASH_ALG_BLOCK_ONLY |
CRYPTO_AHASH_ALG_FINUP_MAX,
.base.cra_blocksize = SHA512_BLOCK_SIZE,
.base.cra_module = THIS_MODULE,
} };