crypto: algapi - use common mechanism for inheriting flags

[linux-2.6-block.git] / crypto / gcm.c

diff --git a/crypto/gcm.c b/crypto/gcm.c
index 0103d28c541eb4137240c45fa74be7bde2638fb8..3a36a9533c96ea11193914ba0a90b64d1fbb34cb 100644 (file)
--- a/crypto/gcm.c
+++ b/crypto/gcm.c
@@ -578,7 +578,6 @@ static int crypto_gcm_create_common(struct crypto_template *tmpl,
                                    const char *ctr_name,
                                    const char *ghash_name)
 {
-       struct crypto_attr_type *algt;
        u32 mask;
        struct aead_instance *inst;
        struct gcm_instance_ctx *ctx;
@@ -586,14 +585,9 @@ static int crypto_gcm_create_common(struct crypto_template *tmpl,
        struct hash_alg_common *ghash;
        int err;
 
-       algt = crypto_get_attr_type(tb);
-       if (IS_ERR(algt))
-               return PTR_ERR(algt);
-
-       if ((algt->type ^ CRYPTO_ALG_TYPE_AEAD) & algt->mask)
-               return -EINVAL;
-
-       mask = crypto_requires_sync(algt->type, algt->mask);
+       err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_AEAD, &mask);
+       if (err)
+               return err;
 
        inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL);
        if (!inst)
@@ -635,8 +629,6 @@ static int crypto_gcm_create_common(struct crypto_template *tmpl,
            CRYPTO_MAX_ALG_NAME)
                goto err_free_inst;
 
-       inst->alg.base.cra_flags = (ghash->base.cra_flags |
-                                   ctr->base.cra_flags) & CRYPTO_ALG_ASYNC;
        inst->alg.base.cra_priority = (ghash->base.cra_priority +
                                       ctr->base.cra_priority) / 2;
        inst->alg.base.cra_blocksize = 1;
@@ -835,21 +827,15 @@ static void crypto_rfc4106_free(struct aead_instance *inst)
 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;
        int err;
 
-       algt = crypto_get_attr_type(tb);
-       if (IS_ERR(algt))
-               return PTR_ERR(algt);
-
-       if ((algt->type ^ CRYPTO_ALG_TYPE_AEAD) & algt->mask)
-               return -EINVAL;
-
-       mask = crypto_requires_sync(algt->type, algt->mask);
+       err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_AEAD, &mask);
+       if (err)
+               return err;
 
        inst = kzalloc(sizeof(*inst) + sizeof(*spawn), GFP_KERNEL);
        if (!inst)
@@ -882,7 +868,6 @@ static int crypto_rfc4106_create(struct crypto_template *tmpl,
            CRYPTO_MAX_ALG_NAME)
                goto err_free_inst;
 
-       inst->alg.base.cra_flags = alg->base.cra_flags & CRYPTO_ALG_ASYNC;
        inst->alg.base.cra_priority = alg->base.cra_priority;
        inst->alg.base.cra_blocksize = 1;
        inst->alg.base.cra_alignmask = alg->base.cra_alignmask;
@@ -1057,21 +1042,15 @@ static void crypto_rfc4543_free(struct aead_instance *inst)
 static int crypto_rfc4543_create(struct crypto_template *tmpl,
                                struct rtattr **tb)
 {
-       struct crypto_attr_type *algt;
        u32 mask;
        struct aead_instance *inst;
        struct aead_alg *alg;
        struct crypto_rfc4543_instance_ctx *ctx;
        int err;
 
-       algt = crypto_get_attr_type(tb);
-       if (IS_ERR(algt))
-               return PTR_ERR(algt);
-
-       if ((algt->type ^ CRYPTO_ALG_TYPE_AEAD) & algt->mask)
-               return -EINVAL;
-
-       mask = crypto_requires_sync(algt->type, algt->mask);
+       err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_AEAD, &mask);
+       if (err)
+               return err;
 
        inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL);
        if (!inst)
@@ -1104,7 +1083,6 @@ static int crypto_rfc4543_create(struct crypto_template *tmpl,
            CRYPTO_MAX_ALG_NAME)
                goto err_free_inst;
 
-       inst->alg.base.cra_flags = alg->base.cra_flags & CRYPTO_ALG_ASYNC;
        inst->alg.base.cra_priority = alg->base.cra_priority;
        inst->alg.base.cra_blocksize = 1;
        inst->alg.base.cra_alignmask = alg->base.cra_alignmask;