Network Drivers

Hi,We are planning to use Fusion network stack in one of our reference board. The board will be interfaced with National Semiconductor’s DP83815(Ethernet Controller). I would like to know if I will get the network drivers along with the fusion stack or is it user’s responsibility to implement it and does not come along with the fusion stack by default? If it does not come along with the fusion stack will it(network drivers) come along with the chip(DP83815)? Does chip providers provide network drivers for a particular stack? Thanking you in advance, Sudip Saha Philips Digital Systems Lab