#include <sys/types.h>
#include <sys/param.h>
#ifdef HAVE_SYS_SYSCTL_H
-#ifndef GNU_LINUX
+#ifdef GNU_LINUX
+#include <linux/types.h>
+#else
#include <sys/sysctl.h>
#endif
#endif /* HAVE_SYS_SYSCTL_H */
AFI_MAX = 4
} afi_t;
+#define IS_VALID_AFI(a) ((a) > AFI_UNSPEC && (a) < AFI_MAX)
+
/* Subsequent Address Family Identifier. */
typedef enum {
SAFI_UNSPEC = 0,