openwrt/target/linux/apm821xx/patches-4.14/023-0014-crypto-crypto4xx-fix-blocksize-for-cfb-and-ofb.patch

From 70c4997f34b6c6888b3ac157adec49e01d0df2d5 Mon Sep 17 00:00:00 2001
From: Christian Lamparter <chunkeey@gmail.com>
Date: Sat, 18 May 2019 23:28:11 +0200
Subject: [PATCH 14/15] crypto: crypto4xx - fix blocksize for cfb and ofb

While the hardware consider them to be blockciphers, the
reference implementation defines them as streamciphers.

Do the right thing and set the blocksize to 1. This
was found by CONFIG_CRYPTO_MANAGER_EXTRA_TESTS.

This fixes the following issues:
skcipher: blocksize for ofb-aes-ppc4xx (16) doesn't match generic impl (1)
skcipher: blocksize for cfb-aes-ppc4xx (16) doesn't match generic impl (1)

Cc: Eric Biggers <ebiggers@kernel.org>
Cc: stable@vger.kernel.org
Fixes: f2a13e7cba9e ("crypto: crypto4xx - enable AES RFC3686, ECB, CFB and OFB offloads")
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 drivers/crypto/amcc/crypto4xx_core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/crypto/amcc/crypto4xx_core.c
+++ b/drivers/crypto/amcc/crypto4xx_core.c
@@ -1227,7 +1227,7 @@ static struct crypto4xx_alg_common crypt
 			.cra_priority = CRYPTO4XX_CRYPTO_PRIORITY,
 			.cra_flags = CRYPTO_ALG_ASYNC |
 				CRYPTO_ALG_KERN_DRIVER_ONLY,
-			.cra_blocksize = AES_BLOCK_SIZE,
+			.cra_blocksize = 1,
 			.cra_ctxsize = sizeof(struct crypto4xx_ctx),
 			.cra_module = THIS_MODULE,
 		},
@@ -1307,7 +1307,7 @@ static struct crypto4xx_alg_common crypt
 			.cra_priority = CRYPTO4XX_CRYPTO_PRIORITY,
 			.cra_flags = CRYPTO_ALG_ASYNC |
 				CRYPTO_ALG_KERN_DRIVER_ONLY,
-			.cra_blocksize = AES_BLOCK_SIZE,
+			.cra_blocksize = 1,
 			.cra_ctxsize = sizeof(struct crypto4xx_ctx),
 			.cra_module = THIS_MODULE,
 		},