From 1efcbf0eff1022f6a44f8c04691caa5f90606bac Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Mon, 9 Oct 2023 00:53:27 -0700 Subject: crypto: arm64/sha2-ce - implement ->digest for sha256 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 Signed-off-by: Herbert Xu --- arch/arm64/crypto/sha2-ce-glue.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'arch/arm64/crypto') diff --git a/arch/arm64/crypto/sha2-ce-glue.c b/arch/arm64/crypto/sha2-ce-glue.c index c57a6119fefc..f2f118b0e1c1 100644 --- a/arch/arm64/crypto/sha2-ce-glue.c +++ b/arch/arm64/crypto/sha2-ce-glue.c @@ -116,6 +116,13 @@ static int sha256_ce_final(struct shash_desc *desc, u8 *out) 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); @@ -155,6 +162,7 @@ static struct shash_alg algs[] = { { .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), -- cgit v1.2.3-58-ga151