RDS_CTRLPKT_SIZE
memsize = (NDataRX * RdsPktSize) + (nctrlrx * RDS_CTRLPKT_SIZE);
mp = mp + RDS_CTRLPKT_SIZE;
memsize = MaxCtrlSendBuffers * RDS_CTRLPKT_SIZE;
rcv_len = RDS_CTRLPKT_SIZE;
bp->buf_ds.ds_len = RDS_CTRLPKT_SIZE;
rcv_len = RDS_CTRLPKT_SIZE;