pxe_netdev now holds a reference to the network device.

Use generic fields in struct device_description rather than assuming
that the struct device * is contained within a pci_device or
isapnp_device; this assumption is broken when using the undionly
driver.

Add PXENV_UNDI_SET_STATION_ADDRESS.

src/include/gpxe/device.h

@@ -27,6 +27,12 @@ struct device_description {
 	unsigned int vendor;
 	/** Device ID */
 	unsigned int device;
+	/** Device class */
+	unsigned long class;
+	/** I/O address */
+	unsigned long ioaddr;
+	/** IRQ */
+	unsigned int irq;
 };
 
 /** PCI bus type */

src/include/pxe.h

@@ -137,4 +137,6 @@ struct pcir_header {
 
 extern struct net_device *pxe_netdev;
 
+extern void pxe_set_netdev ( struct net_device *netdev );
+
 #endif /* PXE_H */