1 files changed, 49 insertions, 0 deletions
diff --git a/fs/smb/server/crypto_ctx.h b/fs/smb/server/crypto_ctx.h
new file mode 100644
index 000000000000..b9476ed520ae
--- /dev/null
+++ b/fs/smb/server/crypto_ctx.h
@@ -0,0 +1,49 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ *   Copyright (C) 2019 Samsung Electronics Co., Ltd.
+ */
+
+#ifndef __CRYPTO_CTX_H__
+#define __CRYPTO_CTX_H__
+
+#include <crypto/hash.h>
+#include <crypto/aead.h>
+
+enum {
+	CRYPTO_SHASH_CMACAES	= 0,
+	CRYPTO_SHASH_MAX,
+};
+
+enum {
+	CRYPTO_AEAD_AES_GCM = 16,
+	CRYPTO_AEAD_AES_CCM,
+	CRYPTO_AEAD_MAX,
+};
+
+enum {
+	CRYPTO_BLK_ECBDES	= 32,
+	CRYPTO_BLK_MAX,
+};
+
+struct ksmbd_crypto_ctx {
+	struct list_head		list;
+
+	struct shash_desc		*desc[CRYPTO_SHASH_MAX];
+	struct crypto_aead		*ccmaes[CRYPTO_AEAD_MAX];
+};
+
+#define CRYPTO_CMACAES(c)	((c)->desc[CRYPTO_SHASH_CMACAES])
+
+#define CRYPTO_CMACAES_TFM(c)	((c)->desc[CRYPTO_SHASH_CMACAES]->tfm)
+
+#define CRYPTO_GCM(c)		((c)->ccmaes[CRYPTO_AEAD_AES_GCM])
+#define CRYPTO_CCM(c)		((c)->ccmaes[CRYPTO_AEAD_AES_CCM])
+
+void ksmbd_release_crypto_ctx(struct ksmbd_crypto_ctx *ctx);
+struct ksmbd_crypto_ctx *ksmbd_crypto_ctx_find_cmacaes(void);
+struct ksmbd_crypto_ctx *ksmbd_crypto_ctx_find_gcm(void);
+struct ksmbd_crypto_ctx *ksmbd_crypto_ctx_find_ccm(void);
+void ksmbd_crypto_destroy(void);
+int ksmbd_crypto_create(void);
+
+#endif /* __CRYPTO_CTX_H__ */