From: Fionnuala Gunter <fin@linux.vnet.ibm.com>
Date: Wed, 7 Aug 2013 23:15:50 +0000 (-0500)
Subject: crypto: nx - saves chaining value from co-processor
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=cc76daf793287b2c51b0b66153072b23cdb51c1c;p=linux-beck.git

crypto: nx - saves chaining value from co-processor

This patch fixes a bug that is triggered when cts(cbc(aes)) is used with
nx-crypto driver on input larger than 32 bytes.

The chaining value from co-processor was not being saved. This value is
needed because it is used as the IV by cts(cbc(aes)).

Signed-off-by: Fionnuala Gunter <fin@linux.vnet.ibm.com>
Reviewed-by: Marcelo Cerri <mhcerri@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/drivers/crypto/nx/nx-aes-cbc.c b/drivers/crypto/nx/nx-aes-cbc.c
index 35d483f8db66..a2f99a910e4a 100644
--- a/drivers/crypto/nx/nx-aes-cbc.c
+++ b/drivers/crypto/nx/nx-aes-cbc.c
@@ -95,6 +95,7 @@ static int cbc_aes_nx_crypt(struct blkcipher_desc *desc,
 	if (rc)
 		goto out;
 
+	memcpy(desc->info, csbcpb->cpb.aes_cbc.cv, AES_BLOCK_SIZE);
 	atomic_inc(&(nx_ctx->stats->aes_ops));
 	atomic64_add(csbcpb->csb.processed_byte_count,
 		     &(nx_ctx->stats->aes_bytes));