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Commit 7d6f5640 authored by Herbert Xu's avatar Herbert Xu
Browse files

crypto: shash - Add shash_attr_alg2 helper 



This patch adds the helper shash_attr_alg2 which locates a shash
algorithm based on the information in the given attribute.

Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent d06854f0

crypto/shash.c

+10 −0
Original line number Diff line number Diff line
@@ -518,5 +518,15 @@ int crypto_init_shash_spawn(struct crypto_shash_spawn *spawn, 
}

EXPORT_SYMBOL_GPL(crypto_init_shash_spawn);



struct shash_alg *shash_attr_alg(struct rtattr *rta, u32 type, u32 mask)

{

	struct crypto_alg *alg;



	alg = crypto_attr_alg2(rta, &crypto_shash_type, type, mask);

	return IS_ERR(alg) ? ERR_CAST(alg) :

	       container_of(alg, struct shash_alg, base);

}

EXPORT_SYMBOL_GPL(shash_attr_alg);



MODULE_LICENSE("GPL");

MODULE_DESCRIPTION("Synchronous cryptographic hash type");

include/crypto/internal/hash.h

+2 −0
Original line number Diff line number Diff line
@@ -60,6 +60,8 @@ int crypto_init_shash_spawn(struct crypto_shash_spawn *spawn, 
			    struct shash_alg *alg,

			    struct crypto_instance *inst);



struct shash_alg *shash_attr_alg(struct rtattr *rta, u32 type, u32 mask);



static inline void *crypto_ahash_ctx(struct crypto_ahash *tfm)

{

	return crypto_tfm_ctx(&tfm->base);