From: Eric Biggers <ebiggers@xxxxxxxxxx>
Implement a ->digest function for sha256-ce. This improves the
performance of crypto_shash_digest() with this algorithm by reducing the
number of indirect calls that are made. This only adds ~112 bytes of
code, mostly for the inlined init, as the finup function is tail-called.
For now, don't bother with this for sha224, since sha224 is rarely used.
Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx>
---
arch/arm64/crypto/sha2-ce-glue.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/arm64/crypto/sha2-ce-glue.c b/arch/arm64/crypto/sha2-ce-glue.c
index c57a6119fefc5..f2f118b0e1c1f 100644
--- a/arch/arm64/crypto/sha2-ce-glue.c
+++ b/arch/arm64/crypto/sha2-ce-glue.c
@@ -109,20 +109,27 @@ static int sha256_ce_final(struct shash_desc *desc, u8 *out)
if (!crypto_simd_usable()) {
sha256_base_do_finalize(desc, __sha256_block_data_order);
return sha256_base_finish(desc, out);
}
sctx->finalize = 0;
sha256_base_do_finalize(desc, __sha2_ce_transform);
return sha256_base_finish(desc, out);
}
+static int sha256_ce_digest(struct shash_desc *desc, const u8 *data,
+ unsigned int len, u8 *out)
+{
+ sha256_base_init(desc);
+ return sha256_ce_finup(desc, data, len, out);
+}
+
static int sha256_ce_export(struct shash_desc *desc, void *out)
{
struct sha256_ce_state *sctx = shash_desc_ctx(desc);
memcpy(out, &sctx->sst, sizeof(struct sha256_state));
return 0;
}
static int sha256_ce_import(struct shash_desc *desc, const void *in)
{
@@ -148,20 +155,21 @@ static struct shash_alg algs[] = { {
.cra_driver_name = "sha224-ce",
.cra_priority = 200,
.cra_blocksize = SHA256_BLOCK_SIZE,
.cra_module = THIS_MODULE,
}
}, {
.init = sha256_base_init,
.update = sha256_ce_update,
.final = sha256_ce_final,
.finup = sha256_ce_finup,
+ .digest = sha256_ce_digest,
.export = sha256_ce_export,
.import = sha256_ce_import,
.descsize = sizeof(struct sha256_ce_state),
.statesize = sizeof(struct sha256_state),
.digestsize = SHA256_DIGEST_SIZE,
.base = {
.cra_name = "sha256",
.cra_driver_name = "sha256-ce",
.cra_priority = 200,
.cra_blocksize = SHA256_BLOCK_SIZE,
base-commit: 8468516f9f93a41dc65158b6428a1a1039c68f20
--
2.42.0
