Zero length payload requests are not handled in
Broadcom SPU2 engine, so this patch adds conditional
check to fallback to software implementation for AES-GCM
and AES-CCM algorithms.
Fixes: 9d12ba86f818 ("crypto: brcm - Add Broadcom SPU driver")
Signed-off-by: Raveendra Padasalagi <raveendra.padasalagi@xxxxxxxxxxxx>
Reviewed-by: Ray Jui <ray.jui@xxxxxxxxxxxx>
Reviewed-by: Scott Branden <scott.branden@xxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
---
Changes in v1:
- Added Cc tag in the Signed-off area to send the patch to stable kernel
drivers/crypto/bcm/cipher.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/crypto/bcm/cipher.c b/drivers/crypto/bcm/cipher.c
index cc0d5b9..6c80863 100644
--- a/drivers/crypto/bcm/cipher.c
+++ b/drivers/crypto/bcm/cipher.c
@@ -2625,7 +2625,7 @@ static int aead_need_fallback(struct aead_request *req)
*/
if (((ctx->cipher.mode == CIPHER_MODE_GCM) ||
(ctx->cipher.mode == CIPHER_MODE_CCM)) &&
- (req->assoclen == 0)) {
+ ((req->assoclen == 0) || (req->cryptlen == 0))) {
if ((rctx->is_encrypt && (req->cryptlen == 0)) ||
(!rctx->is_encrypt && (req->cryptlen == ctx->digestsize))) {
flow_log("AES GCM/CCM needs fallback for 0 len req\n");
--
1.9.1
