RX_CFG_B
data = lan743x_csr_read(adapter, RX_CFG_B(channel_number));
lan743x_csr_write(adapter, RX_CFG_B(channel_number),
data = lan743x_csr_read(adapter, RX_CFG_B(rx->channel_number));
lan743x_csr_write(adapter, RX_CFG_B(rx->channel_number), data);