RTASE_RING_END
status = (opts1 | len | RTASE_RING_END);
opts1 |= (len | RTASE_RING_END);
u32 eor = le32_to_cpu(desc->desc_cmd.opts1) & RTASE_RING_END;
desc->opts1 = cpu_to_le32(RTASE_RING_END);
desc->desc_cmd.opts1 |= cpu_to_le32(RTASE_RING_END);