lkml.org 
[lkml]   [2021]   [Feb]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v5 05/11] crypto: qce: skcipher: Return error for zero length messages
Date
Crypto engine BAM dma does not support 0 length data. Return unsupported
if zero length messages are passed for transformation.

Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org>
---
drivers/crypto/qce/skcipher.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/drivers/crypto/qce/skcipher.c b/drivers/crypto/qce/skcipher.c
index de1f37ed4ee6..331b3c3a5b59 100644
--- a/drivers/crypto/qce/skcipher.c
+++ b/drivers/crypto/qce/skcipher.c
@@ -8,6 +8,7 @@
#include <linux/interrupt.h>
#include <linux/moduleparam.h>
#include <linux/types.h>
+#include <linux/errno.h>
#include <crypto/aes.h>
#include <crypto/internal/des.h>
#include <crypto/internal/skcipher.h>
@@ -260,6 +261,10 @@ static int qce_skcipher_crypt(struct skcipher_request *req, int encrypt)
rctx->flags |= encrypt ? QCE_ENCRYPT : QCE_DECRYPT;
keylen = IS_XTS(rctx->flags) ? ctx->enc_keylen >> 1 : ctx->enc_keylen;

+ /* CE does not handle 0 length messages */
+ if (!req->cryptlen)
+ return -EOPNOTSUPP;
+
/* qce is hanging when AES-XTS request len > QCE_SECTOR_SIZE and
* is not a multiple of it; pass such requests to the fallback
*/
--
2.25.1
\
 
 \ /
  Last update: 2021-02-04 22:47    [W:0.071 / U:0.864 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site