Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 016df0ab authored by Herbert Xu's avatar Herbert Xu
Browse files

crypto: api - Add crypto_requires_off helper 



This patch adds crypto_requires_off which is an extension of
crypto_requires_sync for similar bits such as NEED_FALLBACK.

Cc: stable@vger.kernel.org #4.10
Suggested-by: default avatarMarcelo Cerri <marcelo.cerri@canonical.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent c884b368

include/crypto/algapi.h

+6 −1
Original line number Diff line number Diff line
@@ -360,13 +360,18 @@ static inline struct crypto_alg *crypto_get_attr_alg(struct rtattr **tb, 
	return crypto_attr_alg(tb[1], type, mask);

}



static inline int crypto_requires_off(u32 type, u32 mask, u32 off)

{

	return (type ^ off) & mask & off;

}



/*

 * Returns CRYPTO_ALG_ASYNC if type/mask requires the use of sync algorithms.

 * Otherwise returns zero.

 */

static inline int crypto_requires_sync(u32 type, u32 mask)

{

	return (type ^ CRYPTO_ALG_ASYNC) & mask & CRYPTO_ALG_ASYNC;

	return crypto_requires_off(type, mask, CRYPTO_ALG_ASYNC);

}



noinline unsigned long __crypto_memneq(const void *a, const void *b, size_t size);