+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 11, 9)
+
+/* work around missing attribute needs_free_netdev and priv_destructor in
+ * net_device
+ */
+#define ether_setup(dev) \
+ void batadv_softif_free2(struct net_device *dev) \
+ { \
+ batadv_softif_free(dev); \
+ free_netdev(dev); \
+ } \
+ void (*t1)(struct net_device *dev) __attribute__((unused)); \
+ bool t2 __attribute__((unused)); \
+ ether_setup(dev)
+#define needs_free_netdev destructor = batadv_softif_free2; t2
+#define priv_destructor destructor = batadv_softif_free2; t1
+
+#endif /* < KERNEL_VERSION(4, 11, 9) */
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 13, 0)
+
+static inline void *batadv_skb_put(struct sk_buff *skb, unsigned int len)
+{
+ return (void *)skb_put(skb, len);
+}
+#define skb_put batadv_skb_put
+
+static inline void *skb_put_zero(struct sk_buff *skb, unsigned int len)
+{
+ void *tmp = skb_put(skb, len);
+
+ memset(tmp, 0, len);
+
+ return tmp;
+}
+
+static inline void *skb_put_data(struct sk_buff *skb, const void *data,
+ unsigned int len)
+{
+ void *tmp = skb_put(skb, len);
+
+ memcpy(tmp, data, len);
+
+ return tmp;
+}
+
+#endif /* < KERNEL_VERSION(4, 13, 0) */
+