calc_x
calc_x(*key_x, p[offset], p[moffset]);
calc_x(tmp_x_s, *(u16 *)(&p[offset]), *(u16 *)(&p[moffset]));
calc_x(tmp_x_l, *(u32 *)(&p[offset]), *(u32 *)(&p[moffset]));
calc_x(key_x[ETH_ALEN - 1 - i], p[offset + i],
calc_x(tmp_x_l, *(u32 *)(&p[offset + ip_offset]),
calc_x(tmp_x, meta_data, 0xFFFFFFFF);