rfdr
struct atl1_rfd_ring *rfdr = &adapter->rfd_ring;
rfdr->count = (u16) max(ring->rx_pending, (u32) ATL1_MIN_RFD);
rfdr->count = rfdr->count > ATL1_MAX_RFD ? ATL1_MAX_RFD :
rfdr->count;
rfdr->count = (rfdr->count + 3) & ~3;
rrdr->count = rfdr->count;
sw32(rfdr, w);
net_dev->name, i, sr32(rfdr));
sw32(rfdr, mc_filter[i]);
addr[i] = sr16(rfdr);