crypto: skcipher - pass instance to crypto_grab_skcipher()
Initializing a crypto_skcipher_spawn currently requires:
1. Set spawn->base.inst to point to the instance.
2. Call crypto_grab_skcipher().
But there's no reason for these steps to be separate, and in fact this
unneeded complication has caused at least one bug, the one fixed by
commit 6db43410179b ("crypto: adiantum - initialize crypto_spawn::inst")
So just make crypto_grab_skcipher() take the instance as an argument.
To keep the function calls from getting too unwieldy due to this extra
argument, also introduce a 'mask' variable into the affected places
which weren't already using one.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/ccm.c b/crypto/ccm.c
index 4410452..4414f0d 100644
--- a/crypto/ccm.c
+++ b/crypto/ccm.c
@@ -450,6 +450,7 @@ static int crypto_ccm_create_common(struct crypto_template *tmpl,
const char *mac_name)
{
struct crypto_attr_type *algt;
+ u32 mask;
struct aead_instance *inst;
struct skcipher_alg *ctr;
struct crypto_alg *mac_alg;
@@ -464,6 +465,8 @@ static int crypto_ccm_create_common(struct crypto_template *tmpl,
if ((algt->type ^ CRYPTO_ALG_TYPE_AEAD) & algt->mask)
return -EINVAL;
+ mask = crypto_requires_sync(algt->type, algt->mask);
+
mac_alg = crypto_find_alg(mac_name, &crypto_ahash_type,
CRYPTO_ALG_TYPE_HASH,
CRYPTO_ALG_TYPE_AHASH_MASK |
@@ -488,10 +491,8 @@ static int crypto_ccm_create_common(struct crypto_template *tmpl,
if (err)
goto err_free_inst;
- crypto_set_skcipher_spawn(&ictx->ctr, aead_crypto_instance(inst));
- err = crypto_grab_skcipher(&ictx->ctr, ctr_name, 0,
- crypto_requires_sync(algt->type,
- algt->mask));
+ err = crypto_grab_skcipher(&ictx->ctr, aead_crypto_instance(inst),
+ ctr_name, 0, mask);
if (err)
goto err_drop_mac;
