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authorEric Biggers <ebiggers@google.com>2020-01-02 19:58:46 -0800
committerHerbert Xu <herbert@gondor.apana.org.au>2020-01-09 11:30:54 +0800
commitcd900f0cacd7601dabdd028e8cbdbf2a7041cee2 (patch)
treeee7a4e59f6dd405c03d544ec877f3f33ec3ba685
parentb9f76dddb1f9f70e008b982381bbc9a67c9b8c66 (diff)
crypto: aead - pass instance to crypto_grab_aead()
Initializing a crypto_aead_spawn currently requires: 1. Set spawn->base.inst to point to the instance. 2. Call crypto_grab_aead(). 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_aead() 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>
-rw-r--r--crypto/aead.c6
-rw-r--r--crypto/ccm.c8
-rw-r--r--crypto/cryptd.c4
-rw-r--r--crypto/essiv.c3
-rw-r--r--crypto/gcm.c16
-rw-r--r--crypto/geniv.c4
-rw-r--r--crypto/pcrypt.c5
-rw-r--r--include/crypto/internal/aead.h11
8 files changed, 29 insertions, 28 deletions
diff --git a/crypto/aead.c b/crypto/aead.c
index 47f16d139e8e..c7135e00b8ea 100644
--- a/crypto/aead.c
+++ b/crypto/aead.c
@@ -207,9 +207,11 @@ static const struct crypto_type crypto_aead_type = {
.tfmsize = offsetof(struct crypto_aead, base),
};
-int crypto_grab_aead(struct crypto_aead_spawn *spawn, const char *name,
- u32 type, u32 mask)
+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);
}
diff --git a/crypto/ccm.c b/crypto/ccm.c
index 4414f0ddfe5a..48766e81b933 100644
--- a/crypto/ccm.c
+++ b/crypto/ccm.c
@@ -734,6 +734,7 @@ static int crypto_rfc4309_create(struct crypto_template *tmpl,
struct rtattr **tb)
{
struct crypto_attr_type *algt;
+ u32 mask;
struct aead_instance *inst;
struct crypto_aead_spawn *spawn;
struct aead_alg *alg;
@@ -747,6 +748,8 @@ static int crypto_rfc4309_create(struct crypto_template *tmpl,
if ((algt->type ^ CRYPTO_ALG_TYPE_AEAD) & algt->mask)
return -EINVAL;
+ mask = crypto_requires_sync(algt->type, algt->mask);
+
ccm_name = crypto_attr_alg_name(tb[1]);
if (IS_ERR(ccm_name))
return PTR_ERR(ccm_name);
@@ -756,9 +759,8 @@ static int crypto_rfc4309_create(struct crypto_template *tmpl,
return -ENOMEM;
spawn = aead_instance_ctx(inst);
- crypto_set_aead_spawn(spawn, aead_crypto_instance(inst));
- err = crypto_grab_aead(spawn, ccm_name, 0,
- crypto_requires_sync(algt->type, algt->mask));
+ err = crypto_grab_aead(spawn, aead_crypto_instance(inst),
+ ccm_name, 0, mask);
if (err)
goto out_free_inst;
diff --git a/crypto/cryptd.c b/crypto/cryptd.c
index a0fe10624cfd..a03ac2878017 100644
--- a/crypto/cryptd.c
+++ b/crypto/cryptd.c
@@ -865,8 +865,8 @@ static int cryptd_create_aead(struct crypto_template *tmpl,
ctx = aead_instance_ctx(inst);
ctx->queue = queue;
- crypto_set_aead_spawn(&ctx->aead_spawn, aead_crypto_instance(inst));
- err = crypto_grab_aead(&ctx->aead_spawn, name, type, mask);
+ err = crypto_grab_aead(&ctx->aead_spawn, aead_crypto_instance(inst),
+ name, type, mask);
if (err)
goto out_free_inst;
diff --git a/crypto/essiv.c b/crypto/essiv.c
index 0e45f5b4f67f..20d7c1fdbf5d 100644
--- a/crypto/essiv.c
+++ b/crypto/essiv.c
@@ -500,8 +500,7 @@ static int essiv_create(struct crypto_template *tmpl, struct rtattr **tb)
ictx = crypto_instance_ctx(inst);
/* AEAD cipher, e.g., "authenc(hmac(sha256),cbc(aes))" */
- crypto_set_aead_spawn(&ictx->u.aead_spawn, inst);
- err = crypto_grab_aead(&ictx->u.aead_spawn,
+ err = crypto_grab_aead(&ictx->u.aead_spawn, inst,
inner_cipher_name, 0, mask);
if (err)
goto out_free_inst;
diff --git a/crypto/gcm.c b/crypto/gcm.c
index 887f472734b6..72649b8cbf2a 100644
--- a/crypto/gcm.c
+++ b/crypto/gcm.c
@@ -856,6 +856,7 @@ static int crypto_rfc4106_create(struct crypto_template *tmpl,
struct rtattr **tb)
{
struct crypto_attr_type *algt;
+ u32 mask;
struct aead_instance *inst;
struct crypto_aead_spawn *spawn;
struct aead_alg *alg;
@@ -869,6 +870,8 @@ static int crypto_rfc4106_create(struct crypto_template *tmpl,
if ((algt->type ^ CRYPTO_ALG_TYPE_AEAD) & algt->mask)
return -EINVAL;
+ mask = crypto_requires_sync(algt->type, algt->mask);
+
ccm_name = crypto_attr_alg_name(tb[1]);
if (IS_ERR(ccm_name))
return PTR_ERR(ccm_name);
@@ -878,9 +881,8 @@ static int crypto_rfc4106_create(struct crypto_template *tmpl,
return -ENOMEM;
spawn = aead_instance_ctx(inst);
- crypto_set_aead_spawn(spawn, aead_crypto_instance(inst));
- err = crypto_grab_aead(spawn, ccm_name, 0,
- crypto_requires_sync(algt->type, algt->mask));
+ err = crypto_grab_aead(spawn, aead_crypto_instance(inst),
+ ccm_name, 0, mask);
if (err)
goto out_free_inst;
@@ -1087,6 +1089,7 @@ static int crypto_rfc4543_create(struct crypto_template *tmpl,
struct rtattr **tb)
{
struct crypto_attr_type *algt;
+ u32 mask;
struct aead_instance *inst;
struct crypto_aead_spawn *spawn;
struct aead_alg *alg;
@@ -1101,6 +1104,8 @@ static int crypto_rfc4543_create(struct crypto_template *tmpl,
if ((algt->type ^ CRYPTO_ALG_TYPE_AEAD) & algt->mask)
return -EINVAL;
+ mask = crypto_requires_sync(algt->type, algt->mask);
+
ccm_name = crypto_attr_alg_name(tb[1]);
if (IS_ERR(ccm_name))
return PTR_ERR(ccm_name);
@@ -1111,9 +1116,8 @@ static int crypto_rfc4543_create(struct crypto_template *tmpl,
ctx = aead_instance_ctx(inst);
spawn = &ctx->aead;
- crypto_set_aead_spawn(spawn, aead_crypto_instance(inst));
- err = crypto_grab_aead(spawn, ccm_name, 0,
- crypto_requires_sync(algt->type, algt->mask));
+ err = crypto_grab_aead(spawn, aead_crypto_instance(inst),
+ ccm_name, 0, mask);
if (err)
goto out_free_inst;
diff --git a/crypto/geniv.c b/crypto/geniv.c
index b9e45a2a98b5..7afa48414f3a 100644
--- a/crypto/geniv.c
+++ b/crypto/geniv.c
@@ -64,8 +64,8 @@ struct aead_instance *aead_geniv_alloc(struct crypto_template *tmpl,
/* Ignore async algorithms if necessary. */
mask |= crypto_requires_sync(algt->type, algt->mask);
- crypto_set_aead_spawn(spawn, aead_crypto_instance(inst));
- err = crypto_grab_aead(spawn, name, type, mask);
+ err = crypto_grab_aead(spawn, aead_crypto_instance(inst),
+ name, type, mask);
if (err)
goto err_free_inst;
diff --git a/crypto/pcrypt.c b/crypto/pcrypt.c
index d6696e217128..1b632139a8c1 100644
--- a/crypto/pcrypt.c
+++ b/crypto/pcrypt.c
@@ -258,9 +258,8 @@ static int pcrypt_create_aead(struct crypto_template *tmpl, struct rtattr **tb,
if (!ctx->psdec)
goto out_free_psenc;
- crypto_set_aead_spawn(&ctx->spawn, aead_crypto_instance(inst));
-
- err = crypto_grab_aead(&ctx->spawn, name, 0, 0);
+ err = crypto_grab_aead(&ctx->spawn, aead_crypto_instance(inst),
+ name, 0, 0);
if (err)
goto out_free_psdec;
diff --git a/include/crypto/internal/aead.h b/include/crypto/internal/aead.h
index 374185a7567f..27b7b0224ea6 100644
--- a/include/crypto/internal/aead.h
+++ b/include/crypto/internal/aead.h
@@ -81,14 +81,9 @@ static inline struct aead_request *aead_request_cast(
return container_of(req, struct aead_request, base);
}
-static inline void crypto_set_aead_spawn(
- struct crypto_aead_spawn *spawn, struct crypto_instance *inst)
-{
- crypto_set_spawn(&spawn->base, inst);
-}
-
-int crypto_grab_aead(struct crypto_aead_spawn *spawn, const char *name,
- u32 type, u32 mask);
+int crypto_grab_aead(struct crypto_aead_spawn *spawn,
+ struct crypto_instance *inst,
+ const char *name, u32 type, u32 mask);
static inline void crypto_drop_aead(struct crypto_aead_spawn *spawn)
{