From bd30cf533b77420b7c504c09cef5ba26b0c9dcb4 Mon Sep 17 00:00:00 2001
From: Iuliana Prodan <iuliana.prodan@nxp.com>
Date: Fri, 8 Feb 2019 15:50:08 +0200
Subject: [PATCH] crypto: export arc4 defines
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Some arc4 cipher algorithm defines show up in two places:
crypto/arc4.c and drivers/crypto/bcm/cipher.h.
Let's export them in a common header and update their users.

Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Reviewed-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 crypto/arc4.c               |  5 +----
 drivers/crypto/bcm/cipher.h |  4 +---
 include/crypto/arc4.h       | 13 +++++++++++++
 3 files changed, 15 insertions(+), 7 deletions(-)
 create mode 100644 include/crypto/arc4.h

diff --git a/crypto/arc4.c b/crypto/arc4.c
index 652d24399afa..6c93342e3405 100644
--- a/crypto/arc4.c
+++ b/crypto/arc4.c
@@ -13,14 +13,11 @@
  */
 
 #include <crypto/algapi.h>
+#include <crypto/arc4.h>
 #include <crypto/internal/skcipher.h>
 #include <linux/init.h>
 #include <linux/module.h>
 
-#define ARC4_MIN_KEY_SIZE	1
-#define ARC4_MAX_KEY_SIZE	256
-#define ARC4_BLOCK_SIZE		1
-
 struct arc4_ctx {
 	u32 S[256];
 	u32 x, y;
diff --git a/drivers/crypto/bcm/cipher.h b/drivers/crypto/bcm/cipher.h
index 763c425c41ca..f6da49758954 100644
--- a/drivers/crypto/bcm/cipher.h
+++ b/drivers/crypto/bcm/cipher.h
@@ -23,6 +23,7 @@
 #include <crypto/aes.h>
 #include <crypto/internal/hash.h>
 #include <crypto/aead.h>
+#include <crypto/arc4.h>
 #include <crypto/gcm.h>
 #include <crypto/sha.h>
 #include <crypto/sha3.h>
@@ -34,9 +35,6 @@
 /* Driver supports up to MAX_SPUS SPU blocks */
 #define MAX_SPUS 16
 
-#define ARC4_MIN_KEY_SIZE   1
-#define ARC4_MAX_KEY_SIZE   256
-#define ARC4_BLOCK_SIZE     1
 #define ARC4_STATE_SIZE     4
 
 #define CCM_AES_IV_SIZE    16
diff --git a/include/crypto/arc4.h b/include/crypto/arc4.h
new file mode 100644
index 000000000000..5b2c24ab0139
--- /dev/null
+++ b/include/crypto/arc4.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Common values for ARC4 Cipher Algorithm
+ */
+
+#ifndef _CRYPTO_ARC4_H
+#define _CRYPTO_ARC4_H
+
+#define ARC4_MIN_KEY_SIZE	1
+#define ARC4_MAX_KEY_SIZE	256
+#define ARC4_BLOCK_SIZE		1
+
+#endif /* _CRYPTO_ARC4_H */