From: Jan Glauber <jang@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Jan Glauber <jang@xxxxxxxxxxxxxxxxxx>
---
Documentation/s390/kmsg/aes_s390 | 32 ++++++++++++++++++++++++++++++++
arch/s390/crypto/aes_s390.c | 14 +++++++++-----
2 files changed, 41 insertions(+), 5 deletions(-)
Index: quilt-2.6/arch/s390/crypto/aes_s390.c
===================================================================
--- quilt-2.6.orig/arch/s390/crypto/aes_s390.c
+++ quilt-2.6/arch/s390/crypto/aes_s390.c
@@ -22,8 +22,11 @@
#include <linux/err.h>
#include <linux/module.h>
#include <linux/init.h>
+#include <asm/kmsg.h>
#include "crypt_s390.h"
+#define KMSG_COMPONENT "aes_s390"
+
#define AES_KEYLEN_128 1
#define AES_KEYLEN_192 2
#define AES_KEYLEN_256 4
@@ -169,7 +172,8 @@ static int fallback_init_cip(struct cryp
CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK);
if (IS_ERR(sctx->fallback.cip)) {
- printk(KERN_ERR "Error allocating fallback algo %s\n", name);
+ kmsg_err(1, "Allocating AES fallback algorithm %s failed\n",
+ name);
return PTR_ERR(sctx->fallback.blk);
}
@@ -349,7 +353,8 @@ static int fallback_init_blk(struct cryp
CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK);
if (IS_ERR(sctx->fallback.blk)) {
- printk(KERN_ERR "Error allocating fallback algo %s\n", name);
+ kmsg_err(1, "Allocating AES fallback algorithm %s failed\n",
+ name);
return PTR_ERR(sctx->fallback.blk);
}
@@ -515,9 +520,8 @@ static int __init aes_s390_init(void)
/* z9 109 and z9 BC/EC only support 128 bit key length */
if (keylen_flag == AES_KEYLEN_128)
- printk(KERN_INFO
- "aes_s390: hardware acceleration only available for "
- "128 bit keys\n");
+ kmsg_info(2, "AES hardware acceleration is only available for"
+ " 128-bit keys\n");
ret = crypto_register_alg(&aes_alg);
if (ret)
Index: quilt-2.6/Documentation/s390/kmsg/aes_s390
===================================================================
--- /dev/null
+++ quilt-2.6/Documentation/s390/kmsg/aes_s390
@@ -0,0 +1,32 @@
+/*?
+ * Tag: aes_s390.1
+ * Text: "Allocating AES fallback algorithm %s failed"
+ * Severity: Error
+ * Parameter:
+ * @1: algorithm name
+ * Description:
+ * The advanced encryption standard (AES) algorithm includes three modes with
+ * 128-bit, 192-bit, and 256-bit keys. Your hardware system only provides
+ * hardware acceleration for the 128-bit mode. The aes_s390 module failed to
+ * allocate a software fallback for the AES modes that are not supported by the
+ * hardware. A possible reason for this problem is that the aes_generic module
+ * that provides the fallback algorithms is not available.
+ * User action:
+ * Use the 128-bit mode only or ensure that the aes_generic module is available
+ * and loaded and reload the aes_s390 module.
+ */
+
+/*?
+ * Tag: aes_s390.2
+ * Text: "AES hardware acceleration is only available for 128-bit keys"
+ * Severity: Informational
+ * Description:
+ * The advanced encryption standard (AES) algorithm includes three modes with
+ * 128-bit, 192-bit, and 256-bit keys. Your hardware system only provides
+ * hardware acceleration for the 128-bit key mode. The aes_s390 module
+ * will use the less performant software fallback algorithm for the 192-bit
+ * and 256-bit key modes.
+ * User action:
+ * None.
+ */
+
--
blue skies,
Martin.
"Reality continues to ruin my life." - Calvin.
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