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crypto: hash - Add statesize to crypto_ahash 

As ahash drivers may need to use fallbacks, their state size
is thus variable.  Deal with this by making it an attribute
of crypto_ahash.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2023-04-20 18:05:16 +08:00
parent a4ca033d32
commit c7535fb2dd
3 changed files with 11 additions and 1 deletions
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3
crypto/ahash.c
View File

@ -432,6 +432,8 @@ static int crypto_ahash_init_tfm(struct crypto_tfm *tfm)
hash->setkey = ahash_nosetkey; hash->setkey = ahash_nosetkey;
crypto_ahash_set_statesize(hash, alg->halg.statesize);
if (tfm->__crt_alg->cra_type != &crypto_ahash_type) if (tfm->__crt_alg->cra_type != &crypto_ahash_type)
return crypto_init_shash_ops_async(tfm); return crypto_init_shash_ops_async(tfm);
@ -573,6 +575,7 @@ struct crypto_ahash *crypto_clone_ahash(struct crypto_ahash *hash)
nhash->import = hash->import; nhash->import = hash->import;
nhash->setkey = hash->setkey; nhash->setkey = hash->setkey;
nhash->reqsize = hash->reqsize; nhash->reqsize = hash->reqsize;
nhash->statesize = hash->statesize;
if (tfm->__crt_alg->cra_type != &crypto_ahash_type) if (tfm->__crt_alg->cra_type != &crypto_ahash_type)
return crypto_clone_shash_ops_async(nhash, hash); return crypto_clone_shash_ops_async(nhash, hash);

3
include/crypto/hash.h
View File

@ -260,6 +260,7 @@ struct crypto_ahash {
int (*setkey)(struct crypto_ahash *tfm, const u8 *key, int (*setkey)(struct crypto_ahash *tfm, const u8 *key,
unsigned int keylen); unsigned int keylen);
unsigned int statesize;
unsigned int reqsize; unsigned int reqsize;
struct crypto_tfm base; struct crypto_tfm base;
}; };
@ -400,7 +401,7 @@ static inline unsigned int crypto_ahash_digestsize(struct crypto_ahash *tfm)
*/ */
static inline unsigned int crypto_ahash_statesize(struct crypto_ahash *tfm) static inline unsigned int crypto_ahash_statesize(struct crypto_ahash *tfm)
{ {
return crypto_hash_alg_common(tfm)->statesize; return tfm->statesize;
} }
static inline u32 crypto_ahash_get_flags(struct crypto_ahash *tfm) static inline u32 crypto_ahash_get_flags(struct crypto_ahash *tfm)

6
include/crypto/internal/hash.h
View File

@ -149,6 +149,12 @@ static inline struct ahash_alg *__crypto_ahash_alg(struct crypto_alg *alg)
halg); halg);
} }
static inline void crypto_ahash_set_statesize(struct crypto_ahash *tfm,
unsigned int size)
{
tfm->statesize = size;
}
static inline void crypto_ahash_set_reqsize(struct crypto_ahash *tfm, static inline void crypto_ahash_set_reqsize(struct crypto_ahash *tfm,
unsigned int reqsize) unsigned int reqsize)
{ {