sv_handshake
((sv_handshake *)data)->wr_time = port->wr_time;
((sv_handshake *)data)->wr_skipped = port->wr_skipped;
((sv_handshake *)data)->rd_time = port->rd_time;
((sv_handshake *)data)->rd_skipped = port->rd_skipped;
((sv_handshake *)data)->wr_total = port->wr_total;
((sv_handshake *)data)->rd_total = port->rd_total;
((sv_handshake *)data)->_reserved_[0] = 0xffffffffUL;