mirror of https://gitee.com/openkylin/linux.git
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>
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@ -987,6 +987,21 @@ unsigned int crypto_alg_extsize(struct crypto_alg *alg)
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}
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EXPORT_SYMBOL_GPL(crypto_alg_extsize);
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int crypto_type_has_alg(const char *name, const struct crypto_type *frontend,
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u32 type, u32 mask)
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{
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int ret = 0;
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struct crypto_alg *alg = crypto_find_alg(name, frontend, type, mask);
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if (!IS_ERR(alg)) {
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crypto_mod_put(alg);
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ret = 1;
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}
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return ret;
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}
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EXPORT_SYMBOL_GPL(crypto_type_has_alg);
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static int __init crypto_algapi_init(void)
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{
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crypto_init_proc();
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@ -104,6 +104,9 @@ int crypto_probing_notify(unsigned long val, void *v);
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unsigned int crypto_alg_extsize(struct crypto_alg *alg);
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int crypto_type_has_alg(const char *name, const struct crypto_type *frontend,
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u32 type, u32 mask);
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static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg)
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{
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atomic_inc(&alg->cra_refcnt);
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