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crypto: api - Add crypto_alg_extsize helper

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This patch adds a crypto_alg_extsize helper that can be used
by algorithm types such as pcompress and shash.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2015-04-20 13:39:00 +08:00
parent 2a57e4241e
commit 38d2143311
2 changed files with 8 additions and 0 deletions
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6
crypto/algapi.c
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@ -964,6 +964,12 @@ void crypto_xor(u8 *dst, const u8 *src, unsigned int size)
}
EXPORT_SYMBOL_GPL(crypto_xor);
unsigned int crypto_alg_extsize(struct crypto_alg *alg)
{
return alg->cra_ctxsize;
}
EXPORT_SYMBOL_GPL(crypto_alg_extsize);
static int __init crypto_algapi_init(void)
{
crypto_init_proc();

2
crypto/internal.h
View File

@ -103,6 +103,8 @@ int crypto_register_notifier(struct notifier_block *nb);
int crypto_unregister_notifier(struct notifier_block *nb);
int crypto_probing_notify(unsigned long val, void *v);
unsigned int crypto_alg_extsize(struct crypto_alg *alg);
static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg)
{
atomic_inc(&alg->cra_refcnt);