Commit 1efcbf0e authored by Eric Biggers's avatar Eric Biggers Committed by Herbert Xu
Browse files

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: default avatarEric Biggers <ebiggers@google.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 2e02c25a

arch/arm64/crypto/sha2-ce-glue.c

+8 −0
Original line number Diff line number Diff line
@@ -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),