geoff has merged some changes i made to ether82563.c to support
all currently-shipping intel gigabit pcie controllers. this includes
intel 82566 mm/dm/v, 82571, 82572, 82573[ev]. all of these chips
save the 82566 are in production use. 82566 is untested. the intel 82572 is
built into the intel pro 1000/PT adapter which is ~$35 at tiger direct.
the 82573 is part of the bearlake chipset.

i've seen up to 120MB/s/port AoE throughput on these cards with
jumbo frames, so the hardware's pretty fast once you figure out
which of the three billion option are important.

let me know if you have any problems with these parts. i'd be happy
to take a look.

- erik