From: Eric Biggers <ebiggers@xxxxxxxxxx>
Currently, crypto_spawn::inst is first used temporarily to pass the
instance to crypto_grab_spawn(). Then crypto_init_spawn() overwrites it
with crypto_spawn::next, which shares the same union. Finally,
crypto_spawn::inst is set again when the instance is registered.
Make this less convoluted by just passing the instance as an argument to
crypto_grab_spawn() instead.
Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx>
---
crypto/adiantum.c | 6 +++---
crypto/aead.c | 3 +--
crypto/akcipher.c | 3 +--
crypto/algapi.c | 6 +++---
crypto/skcipher.c | 3 +--
include/crypto/algapi.h | 10 ++--------
6 files changed, 11 insertions(+), 20 deletions(-)
diff --git a/crypto/adiantum.c b/crypto/adiantum.c
index aaf8a66f871c..9e44180111c8 100644
--- a/crypto/adiantum.c
+++ b/crypto/adiantum.c
@@ -550,9 +550,9 @@ static int adiantum_create(struct crypto_template *tmpl, struct rtattr **tb)
streamcipher_alg = crypto_spawn_skcipher_alg(&ictx->streamcipher_spawn);
/* Block cipher, e.g. "aes" */
- crypto_set_spawn(&ictx->blockcipher_spawn,
- skcipher_crypto_instance(inst));
- err = crypto_grab_spawn(&ictx->blockcipher_spawn, blockcipher_name,
+ err = crypto_grab_spawn(&ictx->blockcipher_spawn,
+ skcipher_crypto_instance(inst),
+ blockcipher_name,
CRYPTO_ALG_TYPE_CIPHER, CRYPTO_ALG_TYPE_MASK);
if (err)
goto out_drop_streamcipher;
diff --git a/crypto/aead.c b/crypto/aead.c
index c7135e00b8ea..02a0db076d7e 100644
--- a/crypto/aead.c
+++ b/crypto/aead.c
@@ -211,9 +211,8 @@ int crypto_grab_aead(struct crypto_aead_spawn *spawn,
struct crypto_instance *inst,
const char *name, u32 type, u32 mask)
{
- spawn->base.inst = inst;
spawn->base.frontend = &crypto_aead_type;
- return crypto_grab_spawn(&spawn->base, name, type, mask);
+ return crypto_grab_spawn(&spawn->base, inst, name, type, mask);
}
EXPORT_SYMBOL_GPL(crypto_grab_aead);
diff --git a/crypto/akcipher.c b/crypto/akcipher.c
index 84ccf9b02bbe..eeed6c151d2f 100644
--- a/crypto/akcipher.c
+++ b/crypto/akcipher.c
@@ -94,9 +94,8 @@ int crypto_grab_akcipher(struct crypto_akcipher_spawn *spawn,
struct crypto_instance *inst,
const char *name, u32 type, u32 mask)
{
- spawn->base.inst = inst;
spawn->base.frontend = &crypto_akcipher_type;
- return crypto_grab_spawn(&spawn->base, name, type, mask);
+ return crypto_grab_spawn(&spawn->base, inst, name, type, mask);
}
EXPORT_SYMBOL_GPL(crypto_grab_akcipher);
diff --git a/crypto/algapi.c b/crypto/algapi.c
index a5223c5f2275..a25ce02918f8 100644
--- a/crypto/algapi.c
+++ b/crypto/algapi.c
@@ -714,8 +714,8 @@ int crypto_init_spawn2(struct crypto_spawn *spawn, struct crypto_alg *alg,
}
EXPORT_SYMBOL_GPL(crypto_init_spawn2);
-int crypto_grab_spawn(struct crypto_spawn *spawn, const char *name,
- u32 type, u32 mask)
+int crypto_grab_spawn(struct crypto_spawn *spawn, struct crypto_instance *inst,
+ const char *name, u32 type, u32 mask)
{
struct crypto_alg *alg;
int err;
@@ -729,7 +729,7 @@ int crypto_grab_spawn(struct crypto_spawn *spawn, const char *name,
return PTR_ERR(alg);
spawn->dropref = true;
- err = crypto_init_spawn(spawn, alg, spawn->inst, mask);
+ err = crypto_init_spawn(spawn, alg, inst, mask);
if (err)
crypto_mod_put(alg);
return err;
diff --git a/crypto/skcipher.c b/crypto/skcipher.c
index e5083dccccdc..a9418a7e80a9 100644
--- a/crypto/skcipher.c
+++ b/crypto/skcipher.c
@@ -761,9 +761,8 @@ int crypto_grab_skcipher(struct crypto_skcipher_spawn *spawn,
struct crypto_instance *inst,
const char *name, u32 type, u32 mask)
{
- spawn->base.inst = inst;
spawn->base.frontend = &crypto_skcipher_type;
- return crypto_grab_spawn(&spawn->base, name, type, mask);
+ return crypto_grab_spawn(&spawn->base, inst, name, type, mask);
}
EXPORT_SYMBOL_GPL(crypto_grab_skcipher);
diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h
index 5022cada4fc6..2779c8d34ba9 100644
--- a/include/crypto/algapi.h
+++ b/include/crypto/algapi.h
@@ -116,20 +116,14 @@ int crypto_init_spawn(struct crypto_spawn *spawn, struct crypto_alg *alg,
int crypto_init_spawn2(struct crypto_spawn *spawn, struct crypto_alg *alg,
struct crypto_instance *inst,
const struct crypto_type *frontend);
-int crypto_grab_spawn(struct crypto_spawn *spawn, const char *name,
- u32 type, u32 mask);
+int crypto_grab_spawn(struct crypto_spawn *spawn, struct crypto_instance *inst,
+ const char *name, u32 type, u32 mask);
void crypto_drop_spawn(struct crypto_spawn *spawn);
struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn, u32 type,
u32 mask);
void *crypto_spawn_tfm2(struct crypto_spawn *spawn);
-static inline void crypto_set_spawn(struct crypto_spawn *spawn,
- struct crypto_instance *inst)
-{
- spawn->inst = inst;
-}
-
struct crypto_attr_type *crypto_get_attr_type(struct rtattr **tb);
int crypto_check_attr_type(struct rtattr **tb, u32 type);
const char *crypto_attr_alg_name(struct rtattr *rta);
--
2.24.1
