DPCPU_VARSUM
totalss.n_in = DPCPU_VARSUM(ss, n_in);
totalss.n_out = DPCPU_VARSUM(ss, n_out);
totalss.nskip_in_malloc = DPCPU_VARSUM(ss, nskip_in_malloc);
totalss.nskip_out_malloc = DPCPU_VARSUM(ss, nskip_out_malloc);
totalss.nskip_in_tcpcb = DPCPU_VARSUM(ss, nskip_in_tcpcb);
totalss.nskip_out_tcpcb = DPCPU_VARSUM(ss, nskip_out_tcpcb);
totalss.nskip_in_inpcb = DPCPU_VARSUM(ss, nskip_in_inpcb);
totalss.nskip_out_inpcb = DPCPU_VARSUM(ss, nskip_out_inpcb);