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authorHerbert Xu <herbert@gondor.apana.org.au>2007-01-01 18:37:02 +1100
committerHerbert Xu <herbert@gondor.apana.org.au>2007-05-02 14:38:31 +1000
commitebc610e5bc76df073221e64e86c3f7533a09ea40 (patch)
treed53f4fa3da412f6df4b5891e23ca7c7607a3a5ce /crypto/algapi.c
parent6158efc09016d3186263f6fd3a50667446ec4008 (diff)
downloadlinux-ebc610e5bc76df073221e64e86c3f7533a09ea40.tar.gz
[CRYPTO] templates: Pass type/mask when creating instances
This patch passes the type/mask along when constructing instances of templates. This is in preparation for templates that may support multiple types of instances depending on what is requested. For example, the planned software async crypto driver will use this construct. For the moment this allows us to check whether the instance constructed is of the correct type and avoid returning success if the type does not match. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/algapi.c')
-rw-r--r--crypto/algapi.c42
1 files changed, 36 insertions, 6 deletions
diff --git a/crypto/algapi.c b/crypto/algapi.c
index f7d2185b2c8..491205e11cb 100644
--- a/crypto/algapi.c
+++ b/crypto/algapi.c
@@ -425,15 +425,45 @@ int crypto_unregister_notifier(struct notifier_block *nb)
}
EXPORT_SYMBOL_GPL(crypto_unregister_notifier);
-struct crypto_alg *crypto_get_attr_alg(void *param, unsigned int len,
- u32 type, u32 mask)
+struct crypto_attr_type *crypto_get_attr_type(struct rtattr **tb)
{
- struct rtattr *rta = param;
+ struct rtattr *rta = tb[CRYPTOA_TYPE - 1];
+ struct crypto_attr_type *algt;
+
+ if (!rta)
+ return ERR_PTR(-ENOENT);
+ if (RTA_PAYLOAD(rta) < sizeof(*algt))
+ return ERR_PTR(-EINVAL);
+
+ algt = RTA_DATA(rta);
+
+ return algt;
+}
+EXPORT_SYMBOL_GPL(crypto_get_attr_type);
+
+int crypto_check_attr_type(struct rtattr **tb, u32 type)
+{
+ struct crypto_attr_type *algt;
+
+ algt = crypto_get_attr_type(tb);
+ if (IS_ERR(algt))
+ return PTR_ERR(algt);
+
+ if ((algt->type ^ type) & algt->mask)
+ return -EINVAL;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(crypto_check_attr_type);
+
+struct crypto_alg *crypto_get_attr_alg(struct rtattr **tb, u32 type, u32 mask)
+{
+ struct rtattr *rta = tb[CRYPTOA_ALG - 1];
struct crypto_attr_alg *alga;
- if (!RTA_OK(rta, len))
- return ERR_PTR(-EBADR);
- if (rta->rta_type != CRYPTOA_ALG || RTA_PAYLOAD(rta) < sizeof(*alga))
+ if (!rta)
+ return ERR_PTR(-ENOENT);
+ if (RTA_PAYLOAD(rta) < sizeof(*alga))
return ERR_PTR(-EINVAL);
alga = RTA_DATA(rta);