RL_RXBUFLEN
RL_RXBUFLEN + RL_RX_8139_BUF_GUARD_SZ);
cur_rx = (CSR_READ_2(sc, RL_CURRXADDR) + 16) % RL_RXBUFLEN;
limit = CSR_READ_2(sc, RL_CURRXBUF) % RL_RXBUFLEN;
max_bytes = (RL_RXBUFLEN - cur_rx) + limit;
((cur_rx + sizeof(uint32_t)) % RL_RXBUFLEN);
if (rxbufpos == (sc->rl_cdata.rl_rx_buf + RL_RXBUFLEN))
wrap = (sc->rl_cdata.rl_rx_buf + RL_RXBUFLEN) - rxbufpos;
RL_RXBUFLEN + RL_RX_8139_BUF_GUARD_SZ, 1, /* maxsize,nsegments */
RL_RXBUFLEN + RL_RX_8139_BUF_GUARD_SZ, /* maxsegsize */
RL_RXBUFLEN + RL_RX_8139_BUF_GUARD_SZ, rl_dmamap_cb, &ctx,