From cffaf2b6b179227b31f8e21d7f65b68630fc6606 Mon Sep 17 00:00:00 2001
From: Corentin LABBE <clabbe.montjoie@gmail.com>
Date: Tue, 22 Aug 2017 10:08:08 +0200
Subject: [PATCH] crypto: gcm - add GCM IV size constant

commit ef780324592dd639e4bfbc5b9bf8934b234b7c99 upstream.

Many GCM users use directly GCM IV size instead of using some constant.

This patch add all IV size constant used by GCM.

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 include/crypto/gcm.h | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100644 include/crypto/gcm.h

diff --git a/include/crypto/gcm.h b/include/crypto/gcm.h
new file mode 100644
index 000000000000..c50e057ea17e
--- /dev/null
+++ b/include/crypto/gcm.h
@@ -0,0 +1,8 @@
+#ifndef _CRYPTO_GCM_H
+#define _CRYPTO_GCM_H
+
+#define GCM_AES_IV_SIZE 12
+#define GCM_RFC4106_IV_SIZE 8
+#define GCM_RFC4543_IV_SIZE 8
+
+#endif
-- 
2.20.1