typedef __u32 if_mask;
#define NIFBITS (sizeof(if_mask) * 8) /* bits per mask */
-#if !defined(__KERNEL__) && !defined(DIV_ROUND_UP)
+#if !defined(__KERNEL__)
+#if !defined(DIV_ROUND_UP)
#define DIV_ROUND_UP(x,y) (((x) + ((y) - 1)) / (y))
#endif
+#endif
typedef struct if_set {
if_mask ifs_bits[DIV_ROUND_UP(IF_SETSIZE, NIFBITS)];