[PATCH v3 2/6] crypto: arm64/sm3-ce - make dependent on sm3 library

Tianjia Zhang
2021-12-23T04:38:09Z

SM3 generic library is stand-alone implementation, sm3-ce can depend
on the SM3 library instead of sm3-generic.

Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
---
arch/arm64/crypto/Kconfig | 2 +-
arch/arm64/crypto/sm3-ce-glue.c | 20 ++++++++++++++------
2 files changed, 15 insertions(+), 7 deletions(-)

diff --git a/arch/arm64/crypto/Kconfig b/arch/arm64/crypto/Kconfig
index addfa413650b..2a965aa0188d 100644
--- a/arch/arm64/crypto/Kconfig
+++ b/arch/arm64/crypto/Kconfig
@@ -45,7 +45,7 @@ config CRYPTO_SM3_ARM64_CE
tristate "SM3 digest algorithm (ARMv8.2 Crypto Extensions)"
depends on KERNEL_MODE_NEON
select CRYPTO_HASH
- select CRYPTO_SM3
+ select CRYPTO_LIB_SM3

config CRYPTO_SM4_ARM64_CE
tristate "SM4 symmetric cipher (ARMv8.2 Crypto Extensions)"
diff --git a/arch/arm64/crypto/sm3-ce-glue.c b/arch/arm64/crypto/sm3-ce-glue.c
index d71faca322f2..3198f31c9446 100644
--- a/arch/arm64/crypto/sm3-ce-glue.c
+++ b/arch/arm64/crypto/sm3-ce-glue.c
@@ -27,7 +27,7 @@ static int sm3_ce_update(struct shash_desc *desc, const u8 *data,
unsigned int len)
{
if (!crypto_simd_usable())
- return crypto_sm3_update(desc, data, len);
+ return sm3_update(shash_desc_ctx(desc), data, len);

kernel_neon_begin();
sm3_base_do_update(desc, data, len, sm3_ce_transform);
@@ -39,7 +39,7 @@ static int sm3_ce_update(struct shash_desc *desc, const u8 *data,
static int sm3_ce_final(struct shash_desc *desc, u8 *out)
{
if (!crypto_simd_usable())
- return crypto_sm3_finup(desc, NULL, 0, out);
+ return sm3_final(shash_desc_ctx(desc), out);

kernel_neon_begin();
sm3_base_do_finalize(desc, sm3_ce_transform);
@@ -51,14 +51,22 @@ static int sm3_ce_final(struct shash_desc *desc, u8 *out)
static int sm3_ce_finup(struct shash_desc *desc, const u8 *data,
unsigned int len, u8 *out)
{
- if (!crypto_simd_usable())
- return crypto_sm3_finup(desc, data, len, out);
+ if (!crypto_simd_usable()) {
+ struct sm3_state *sctx = shash_desc_ctx(desc);
+
+ if (len)
+ sm3_update(sctx, data, len);
+ sm3_final(sctx, out);
+ return 0;
+ }

kernel_neon_begin();
- sm3_base_do_update(desc, data, len, sm3_ce_transform);
+ if (len)
+ sm3_base_do_update(desc, data, len, sm3_ce_transform);
+ sm3_base_do_finalize(desc, sm3_ce_transform);
kernel_neon_end();

- return sm3_ce_final(desc, out);
+ return sm3_base_finish(desc, out);
}

static struct shash_alg sm3_alg = {