From 7d6f56400a695af497a8b7c23ea0ff9c3d9d99f4 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Wed, 8 Jul 2009 17:56:28 +0800 Subject: [PATCH] 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: Herbert Xu --- crypto/shash.c | 10 ++++++++++ include/crypto/internal/hash.h | 2 ++ 2 files changed, 12 insertions(+) diff --git a/crypto/shash.c b/crypto/shash.c index 97f6c8ba103a..21bcff6be5b0 100644 --- a/crypto/shash.c +++ b/crypto/shash.c @@ -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"); diff --git a/include/crypto/internal/hash.h b/include/crypto/internal/hash.h index 6cc824b79331..e2ab35a74c62 100644 --- a/include/crypto/internal/hash.h +++ b/include/crypto/internal/hash.h @@ -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); -- 2.20.1