4133842d36
For iscsi read/write, expected_data_xfer_len is 0, dxfer_dir is set to SPDK_SCSI_DIR_NONE. But we can still have read/write op in SCSI layer. This patch solves this issue. Change-Id: I950e163fffb06fefaf8a913d1f6de29c96a52264 Signed-off-by: Ziye Yang <ziye.yang@intel.com>