RL_ADDR_LO
txptr->so1.TxBuffL = htole32(RL_ADDR_LO(segs->ds_addr));
rxptr->so0.RxBuffL = htole32(RL_ADDR_LO(segs->ds_addr));
CSR_WRITE_4(sc, 0xe4, RL_ADDR_LO(segs->ds_addr));
CSR_WRITE_4(sc, 0x20, RL_ADDR_LO(segs->ds_addr));