4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Corentin LABBE <clabbe.montj...@gmail.com>

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.montj...@gmail.com>
Signed-off-by: Herbert Xu <herb...@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 include/crypto/gcm.h |    8 ++++++++
 1 file changed, 8 insertions(+)

--- /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


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