aboutsummaryrefslogtreecommitdiffstats
path: root/crypto
diff options
context:
space:
mode:
authorHuang Ying <ying.huang@intel.com>2009-01-18 16:19:46 +1100
committerHerbert Xu <herbert@gondor.apana.org.au>2009-02-18 16:48:05 +0800
commit1cac2cbc76b9f3fce0d4ccc374e724e7f2533a47 (patch)
treeea54d0d42ca3775a57620cb3c4c115e15d96d9a3 /crypto
parent1693531e9ef11959300617c68a8322ad006b5475 (diff)
downloadmrst-s0i3-test-1cac2cbc76b9f3fce0d4ccc374e724e7f2533a47.tar.gz
mrst-s0i3-test-1cac2cbc76b9f3fce0d4ccc374e724e7f2533a47.tar.xz
mrst-s0i3-test-1cac2cbc76b9f3fce0d4ccc374e724e7f2533a47.zip
crypto: cryptd - Add support to access underlying blkcipher
cryptd_alloc_ablkcipher() will allocate a cryptd-ed ablkcipher for specified algorithm name. The new allocated one is guaranteed to be cryptd-ed ablkcipher, so the blkcipher underlying can be gotten via cryptd_ablkcipher_child(). Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
-rw-r--r--crypto/cryptd.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/crypto/cryptd.c b/crypto/cryptd.c
index d29e06b350f..93b98c525b3 100644
--- a/crypto/cryptd.c
+++ b/crypto/cryptd.c
@@ -12,6 +12,7 @@
#include <crypto/algapi.h>
#include <crypto/internal/hash.h>
+#include <crypto/cryptd.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/kernel.h>
@@ -537,6 +538,40 @@ static struct crypto_template cryptd_tmpl = {
.module = THIS_MODULE,
};
+struct cryptd_ablkcipher *cryptd_alloc_ablkcipher(const char *alg_name,
+ u32 type, u32 mask)
+{
+ char cryptd_alg_name[CRYPTO_MAX_ALG_NAME];
+ struct crypto_ablkcipher *tfm;
+
+ if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME,
+ "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME)
+ return ERR_PTR(-EINVAL);
+ tfm = crypto_alloc_ablkcipher(cryptd_alg_name, type, mask);
+ if (IS_ERR(tfm))
+ return ERR_CAST(tfm);
+ if (crypto_ablkcipher_tfm(tfm)->__crt_alg->cra_module != THIS_MODULE) {
+ crypto_free_ablkcipher(tfm);
+ return ERR_PTR(-EINVAL);
+ }
+
+ return __cryptd_ablkcipher_cast(tfm);
+}
+EXPORT_SYMBOL_GPL(cryptd_alloc_ablkcipher);
+
+struct crypto_blkcipher *cryptd_ablkcipher_child(struct cryptd_ablkcipher *tfm)
+{
+ struct cryptd_blkcipher_ctx *ctx = crypto_ablkcipher_ctx(&tfm->base);
+ return ctx->child;
+}
+EXPORT_SYMBOL_GPL(cryptd_ablkcipher_child);
+
+void cryptd_free_ablkcipher(struct cryptd_ablkcipher *tfm)
+{
+ crypto_free_ablkcipher(&tfm->base);
+}
+EXPORT_SYMBOL_GPL(cryptd_free_ablkcipher);
+
static inline int cryptd_create_thread(struct cryptd_state *state,
int (*fn)(void *data), const char *name)
{