targccblen
static size_t targccblen(xpt_opcode func_code);
ccb_len = targccblen(k_ccbh->func_code) - sizeof(struct ccb_hdr);
ccb_len = targccblen(ccb->ccb_h.func_code) - sizeof(struct ccb_hdr);
ccb_len = targccblen(type);