return ahash_def_finup_finish1(req, err);
}
+static void crypto_ahash_exit_tfm(struct crypto_tfm *tfm)
+{
+ struct crypto_ahash *hash = __crypto_ahash_cast(tfm);
+ struct ahash_alg *alg = crypto_ahash_alg(hash);
+
+ alg->exit_tfm(hash);
+}
+
static int crypto_ahash_init_tfm(struct crypto_tfm *tfm)
{
struct crypto_ahash *hash = __crypto_ahash_cast(tfm);
ahash_set_needkey(hash);
}
- return 0;
+ if (alg->exit_tfm)
+ tfm->exit = crypto_ahash_exit_tfm;
+
+ return alg->init_tfm ? alg->init_tfm(hash) : 0;
}
static unsigned int crypto_ahash_extsize(struct crypto_alg *alg)
* data so the transformation can continue from this point onward. No
* data processing happens at this point. Driver must not use
* req->result.
+ * @init_tfm: Initialize the cryptographic transformation object.
+ * This function is called only once at the instantiation
+ * time, right after the transformation context was
+ * allocated. In case the cryptographic hardware has
+ * some special requirements which need to be handled
+ * by software, this function shall check for the precise
+ * requirement of the transformation and put any software
+ * fallbacks in place.
+ * @exit_tfm: Deinitialize the cryptographic transformation object.
+ * This is a counterpart to @init_tfm, used to remove
+ * various changes set in @init_tfm.
* @halg: see struct hash_alg_common
*/
struct ahash_alg {
int (*import)(struct ahash_request *req, const void *in);
int (*setkey)(struct crypto_ahash *tfm, const u8 *key,
unsigned int keylen);
+ int (*init_tfm)(struct crypto_ahash *tfm);
+ void (*exit_tfm)(struct crypto_ahash *tfm);
struct hash_alg_common halg;
};