diff options
| author | Eric Biggers <ebiggers@google.com> | 2023-10-19 01:34:55 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2023-10-27 13:04:24 +0300 |
| commit | 08debaa5cb31da50725a8cb2f06d3f617a9caa98 (patch) | |
| tree | 29f3f1b9b6282469e3dda1441ce9e4d8bc16564e /include/crypto | |
| parent | a411f6debeb33e2ec8f5825f0c41497317c0504e (diff) | |
| download | linux-08debaa5cb31da50725a8cb2f06d3f617a9caa98.tar.xz | |
crypto: shash - eliminate indirect call for default import and export
Most shash algorithms don't have custom ->import and ->export functions,
resulting in the memcpy() based default being used. Yet,
crypto_shash_import() and crypto_shash_export() still make an indirect
call, which is expensive. Therefore, change how the default import and
export are called to make it so that crypto_shash_import() and
crypto_shash_export() don't do an indirect call in this case.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include/crypto')
| -rw-r--r-- | include/crypto/hash.h | 15 |
1 files changed, 2 insertions, 13 deletions
diff --git a/include/crypto/hash.h b/include/crypto/hash.h index f7c2a22cd776..52e57e93b2f5 100644 --- a/include/crypto/hash.h +++ b/include/crypto/hash.h @@ -952,10 +952,7 @@ int crypto_shash_tfm_digest(struct crypto_shash *tfm, const u8 *data, * Context: Any context. * Return: 0 if the export creation was successful; < 0 if an error occurred */ -static inline int crypto_shash_export(struct shash_desc *desc, void *out) -{ - return crypto_shash_alg(desc->tfm)->export(desc, out); -} +int crypto_shash_export(struct shash_desc *desc, void *out); /** * crypto_shash_import() - import operational state @@ -969,15 +966,7 @@ static inline int crypto_shash_export(struct shash_desc *desc, void *out) * Context: Any context. * Return: 0 if the import was successful; < 0 if an error occurred */ -static inline int crypto_shash_import(struct shash_desc *desc, const void *in) -{ - struct crypto_shash *tfm = desc->tfm; - - if (crypto_shash_get_flags(tfm) & CRYPTO_TFM_NEED_KEY) - return -ENOKEY; - - return crypto_shash_alg(tfm)->import(desc, in); -} +int crypto_shash_import(struct shash_desc *desc, const void *in); /** * crypto_shash_init() - (re)initialize message digest |