FCP_PRIO_CFG_HDR_SIZE
fcp_prio_addr << 2, FCP_PRIO_CFG_HDR_SIZE);
fcp_prio_addr += (FCP_PRIO_CFG_HDR_SIZE >> 2);
max_len = FCP_PRIO_CFG_SIZE - FCP_PRIO_CFG_HDR_SIZE;