#define SIOCGETCPHYRD (SIOCDEVPRIVATE + 9)
#define SIOCSETCPHYWR (SIOCDEVPRIVATE + 10)
+/* linux 2.4 does not have 'bool' */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
+#define bool int
+#endif
/* Data structure for a Roboswitch device. */
struct robo_switch {