+/*
+ * CentOS 5.5 have *_hdr helpers back-ported
+ */
+#ifdef RHEL_RELEASE_CODE
+#if RHEL_RELEASE_CODE < RHEL_RELEASE_VERSION(5,5)
+#define __DEFINE_IPHDR_HELPERS__
+#endif
+#else
+#define __DEFINE_IPHDR_HELPERS__
+#endif
+#else
+#define NET_STAT(priv) (priv->dev->stats)
+#define NETDEV_GET_STATS(netdev, fun_ptr)
+#define DECLARE_NET_DEVICE_STATS
+#endif
+
+#ifdef __DEFINE_IPHDR_HELPERS__