crypto/qat: fix null cipher algo for non 8-byte multiple

[ upstream commit 20f1cb1 ]

NULL cipher algo of 4-byte multiple and other sizes caused firmware hang
due to use of wrong mode. Changed from ECB mode to CTR mode to fix.

Fixes: 98f0608 ("crypto/qat: add symmetric session file")

Signed-off-by: Fiona Trahe <fiona.trahe@intel.com>

drivers/crypto/qat/qat_sym_session.c

@@ -242,7 +242,8 @@ qat_sym_session_configure_cipher(struct rte_cryptodev *dev,
 		session->qat_mode = ICP_QAT_HW_CIPHER_ECB_MODE;
 		break;
 	case RTE_CRYPTO_CIPHER_NULL:
-		session->qat_mode = ICP_QAT_HW_CIPHER_ECB_MODE;
+		session->qat_cipher_alg = ICP_QAT_HW_CIPHER_ALGO_NULL;
+		session->qat_mode = ICP_QAT_HW_CIPHER_CTR_MODE;
 		break;
 	case RTE_CRYPTO_CIPHER_KASUMI_F8:
 		if (qat_sym_validate_kasumi_key(cipher_xform->key.length,