#include <linux/sysctl.h>
#ifdef CONFIG_INET
-extern struct ctl_table ipv4_table[];
+#include <net/ip.h>
#endif
-extern struct ctl_table core_table[];
-
#ifdef CONFIG_NET
-extern struct ctl_table ether_table[];
+#include <linux/if_ether.h>
#endif
#ifdef CONFIG_TR
-extern struct ctl_table tr_table[];
+#include <linux/if_tr.h>
#endif
struct ctl_table net_table[] = {