Changing igb to foo in if_igb.c

[Nomad Esst]

Hi list
I'm new here and I want you to excuse me for newish questions.
We have to types of igb cards(fiber and Ethernet) on our systems. Both of these cards are name igb# I want to change fiber ones to foo. I have took look at if_igb.c file, how can I detect the type of cards before filling driver_t structure out? e.g. If type=bar then filling with igb as name else if type=foo then filling with foo as name. 

static device_method_t igb_methods[] = {
	/* Device interface */
	DEVMETHOD(device_probe, igb_probe),
	DEVMETHOD(device_attach, igb_attach),
	DEVMETHOD(device_detach, igb_detach),
	DEVMETHOD(device_shutdown, igb_shutdown),
	DEVMETHOD(device_suspend, igb_suspend),
	DEVMETHOD(device_resume, igb_resume),
	{0, 0}
};

static driver_t igb_driver = {
	"igb", igb_methods, sizeof(struct adapter),
};

static devclass_t igb_devclass;
DRIVER_MODULE(igb, pci, igb_driver, igb_devclass, 0, 0);
MODULE_DEPEND(igb, pci, 1, 1, 1);
MODULE_DEPEND(igb, ether, 1, 1, 1);

Thanks in advance .