RQ_ENET_LEN_MASK
desc->length_type = cpu_to_le16((length & RQ_ENET_LEN_MASK) |
*length = le16_to_cpu(desc->length_type) & RQ_ENET_LEN_MASK;
desc->length_type = cpu_to_le16((length & RQ_ENET_LEN_MASK) |
*length = le16_to_cpu(desc->length_type) & RQ_ENET_LEN_MASK;