From 5f815c8df327374ea13a5e2eca4d9f5ce894590e Mon Sep 17 00:00:00 2001
From: Huang Ying <ying.huang@intel.com>
Date: Sun, 18 Jan 2009 16:19:46 +1100
Subject: [PATCH] --- yaml --- r: 132685 b: refs/heads/master c:
 1cac2cbc76b9f3fce0d4ccc374e724e7f2533a47 h: refs/heads/master i:   132683:
 ab2680f091c80aec2951d53b8fb874c104d10718 v: v3

---
 [refs]                        |  2 +-
 trunk/crypto/cryptd.c         | 35 +++++++++++++++++++++++++++++++++++
 trunk/include/crypto/cryptd.h | 27 +++++++++++++++++++++++++++
 3 files changed, 63 insertions(+), 1 deletion(-)
 create mode 100644 trunk/include/crypto/cryptd.h

diff --git a/[refs] b/[refs]
index e1576635eced..f3fed5903a03 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 1693531e9ef11959300617c68a8322ad006b5475
+refs/heads/master: 1cac2cbc76b9f3fce0d4ccc374e724e7f2533a47
diff --git a/trunk/crypto/cryptd.c b/trunk/crypto/cryptd.c
index d29e06b350ff..93b98c525b3a 100644
--- a/trunk/crypto/cryptd.c
+++ b/trunk/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)
 {
diff --git a/trunk/include/crypto/cryptd.h b/trunk/include/crypto/cryptd.h
new file mode 100644
index 000000000000..55fa7bbdbc71
--- /dev/null
+++ b/trunk/include/crypto/cryptd.h
@@ -0,0 +1,27 @@
+/*
+ * Software async crypto daemon
+ */
+
+#ifndef _CRYPTO_CRYPT_H
+#define _CRYPTO_CRYPT_H
+
+#include <linux/crypto.h>
+#include <linux/kernel.h>
+
+struct cryptd_ablkcipher {
+	struct crypto_ablkcipher base;
+};
+
+static inline struct cryptd_ablkcipher *__cryptd_ablkcipher_cast(
+	struct crypto_ablkcipher *tfm)
+{
+	return (struct cryptd_ablkcipher *)tfm;
+}
+
+/* alg_name should be algorithm to be cryptd-ed */
+struct cryptd_ablkcipher *cryptd_alloc_ablkcipher(const char *alg_name,
+						  u32 type, u32 mask);
+struct crypto_blkcipher *cryptd_ablkcipher_child(struct cryptd_ablkcipher *tfm);
+void cryptd_free_ablkcipher(struct cryptd_ablkcipher *tfm);
+
+#endif