crypto: ghash-generic - move common definitions to a new header file

Move common values and types used by ghash-generic to a new header file
so drivers can directly use ghash-generic as a fallback implementation.

Fixes: cc333cd68dfa ("crypto: vmx - Adding GHASH routines for VMX module")
Cc: stable@vger.kernel.org
Signed-off-by: Marcelo Cerri <marcelo.cerri@canonical.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

2 files changed, 24 insertions, 12 deletions

diff --git a/crypto/ghash-generic.c b/crypto/ghash-generic.c
index bac70995e064..12ad3e3a84e3 100644
--- a/crypto/ghash-generic.c
+++ b/crypto/ghash-generic.c
@@ -14,24 +14,13 @@
 
 #include <crypto/algapi.h>
 #include <crypto/gf128mul.h>
+#include <crypto/ghash.h>
 #include <crypto/internal/hash.h>
 #include <linux/crypto.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 
-#define GHASH_BLOCK_SIZE        16
-#define GHASH_DIGEST_SIZE       16
-
-struct ghash_ctx {
-        struct gf128mul_4k *gf128;
-};
-
-struct ghash_desc_ctx {
-        u8 buffer[GHASH_BLOCK_SIZE];
-        u32 bytes;
-};
-
 static int ghash_init(struct shash_desc *desc)
 {
         struct ghash_desc_ctx *dctx = shash_desc_ctx(desc);
diff --git a/include/crypto/ghash.h b/include/crypto/ghash.h
new file mode 100644
index 000000000000..2a61c9bbab8f
--- /dev/null
+++ b/include/crypto/ghash.h
@@ -0,0 +1,23 @@
+/*
+ * Common values for GHASH algorithms
+ */
+
+#ifndef __CRYPTO_GHASH_H__
+#define __CRYPTO_GHASH_H__
+
+#include <linux/types.h>
+#include <crypto/gf128mul.h>
+
+#define GHASH_BLOCK_SIZE        16
+#define GHASH_DIGEST_SIZE       16
+
+struct ghash_ctx {
+        struct gf128mul_4k *gf128;
+};
+
+struct ghash_desc_ctx {
+        u8 buffer[GHASH_BLOCK_SIZE];
+        u32 bytes;
+};
+
+#endif