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crypto: api - Rebirth of crypto_alloc_tfm

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This patch reintroduces a completely revamped crypto_alloc_tfm.
The biggest change is that we now take two crypto_type objects
when allocating a tfm, a frontend and a backend.  In fact this
simply formalises what we've been doing behind the API's back.

For example, as it stands crypto_alloc_ahash may use an
actual ahash algorithm or a crypto_hash algorithm.  Putting
this in the API allows us to do this much more cleanly.

The existing types will be converted across gradually.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu
2008-09-21 06:52:53 +09:00
parent 4a7794860b
commit 7b0bac64cd
4 changed files with 123 additions and 1 deletions
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10
include/crypto/algapi.h
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@ -22,8 +22,18 @@ struct seq_file;
struct crypto_type {
unsigned int (*ctxsize)(struct crypto_alg *alg, u32 type, u32 mask);
unsigned int (*extsize)(struct crypto_alg *alg,
const struct crypto_type *frontend);
int (*init)(struct crypto_tfm *tfm, u32 type, u32 mask);
int (*init_tfm)(struct crypto_tfm *tfm,
const struct crypto_type *frontend);
void (*show)(struct seq_file *m, struct crypto_alg *alg);
struct crypto_alg *(*lookup)(const char *name, u32 type, u32 mask);
unsigned int type;
unsigned int maskclear;
unsigned int maskset;
unsigned int tfmsize;
};
struct crypto_instance {