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crypto: api - Add crypto_type_has_alg helper 

This patch adds the helper crypto_type_has_alg which is meant
to replace crypto_has_alg for new-style crypto types.  Rather
than hard-coding type/mask information they're now retrieved
from the crypto_type object.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
hifive-unleashed-5.1
Herbert Xu 2016-01-23 13:51:01 +08:00
parent 1aaa753d91
commit f2aefdab5d
2 changed files with 18 additions and 0 deletions
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15
crypto/algapi.c
View File

@ -987,6 +987,21 @@ unsigned int crypto_alg_extsize(struct crypto_alg *alg)
}
EXPORT_SYMBOL_GPL(crypto_alg_extsize);
int crypto_type_has_alg(const char *name, const struct crypto_type *frontend,
u32 type, u32 mask)
{
int ret = 0;
struct crypto_alg *alg = crypto_find_alg(name, frontend, type, mask);
if (!IS_ERR(alg)) {
crypto_mod_put(alg);
ret = 1;
}
return ret;
}
EXPORT_SYMBOL_GPL(crypto_type_has_alg);
static int __init crypto_algapi_init(void)
{
crypto_init_proc();

3
crypto/internal.h
View File

@ -104,6 +104,9 @@ int crypto_probing_notify(unsigned long val, void *v);
unsigned int crypto_alg_extsize(struct crypto_alg *alg);
int crypto_type_has_alg(const char *name, const struct crypto_type *frontend,
u32 type, u32 mask);
static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg)
{
atomic_inc(&alg->cra_refcnt);