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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2009-07-08 13:56:28 +0400 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2009-07-08 14:58:30 +0400 |
| commit | 7d6f56400a695af497a8b7c23ea0ff9c3d9d99f4 (patch) | |
| tree | 53447ff76fda984ca3fb59aca2bd5f3454842b14 | |
| parent | d06854f0243d91badabaab14503f7f3bb770061d (diff) | |
| download | linux-7d6f56400a695af497a8b7c23ea0ff9c3d9d99f4.tar.xz | |
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 <herbert@gondor.apana.org.au>
| -rw-r--r-- | crypto/shash.c | 10 | ||||
| -rw-r--r-- | include/crypto/internal/hash.h | 2 |
2 files changed, 12 insertions, 0 deletions
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); |