Commit 378fe6fb authored Jan 18, 2018 by Kamil Konieczny Committed by Herbert Xu Feb 15, 2018

crypto: n2 - Add empty hash export and import

Crypto framework requires export/import in async hash. If driver do not
implement them, wrapper functions in framework will be used, and it will
cause error during ahash alg registration (unless one disables crypto
internal tests). To make change in framework and expose this requirement,
I will remove wrappers from crypto/ahash.c , but this can broke code which
depends on them. Add empty hash export and import, with the same behaviour
as in framework and expose this directly in driver. This can also prevent
OOPS when config option in Cryptographic API 'Disable run-time self tests'
will be enabled.

Signed-off-by: Kamil Konieczny <k.konieczny@partner.samsung.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

parent 9190b6fd

drivers/crypto/n2_core.c

+12 −0

Original line number	Diff line number	Diff line
		@@ -359,6 +359,16 @@ static int n2_hash_async_finup(struct ahash_request *req)
		return crypto_ahash_finup(&rctx->fallback_req);
		}

		static int n2_hash_async_noimport(struct ahash_request req, const void in)
		{
		return -ENOSYS;
		}

		static int n2_hash_async_noexport(struct ahash_request req, void out)
		{
		return -ENOSYS;
		}

		static int n2_hash_cra_init(struct crypto_tfm *tfm)
		{
		const char *fallback_driver_name = crypto_tfm_alg_name(tfm);
		@@ -1467,6 +1477,8 @@ static int __n2_register_one_ahash(const struct n2_hash_tmpl *tmpl)
		ahash->final = n2_hash_async_final;
		ahash->finup = n2_hash_async_finup;
		ahash->digest = n2_hash_async_digest;
		ahash->export = n2_hash_async_noexport;
		ahash->import = n2_hash_async_noimport;

		halg = &ahash->halg;
		halg->digestsize = tmpl->digest_size;