+
+#ifndef HAVE_SKB_UNCLONE
+static inline int skb_unclone(struct sk_buff *skb, gfp_t pri)
+{
+ might_sleep_if(pri & __GFP_WAIT);
+
+ if (skb_cloned(skb))
+ return pskb_expand_head(skb, 0, 0, pri);
+
+ return 0;
+}
+#endif
+
+#ifndef HAVE_SKB_ORPHAN_FRAGS
+static inline int skb_orphan_frags(struct sk_buff *skb, gfp_t gfp_mask)
+{
+ return 0;
+}
+#endif
+
+#ifndef HAVE_SKB_GET_HASH
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,8,0)
+#define __skb_get_hash rpl__skb_get_rxhash
+#define skb_get_hash rpl_skb_get_rxhash
+
+extern u32 __skb_get_hash(struct sk_buff *skb);
+static inline __u32 skb_get_hash(struct sk_buff *skb)
+{
+#ifdef HAVE_RXHASH
+ if (skb->rxhash)
+ return skb->rxhash;
+#endif
+ return __skb_get_hash(skb);
+}
+
+#else
+#define skb_get_hash skb_get_rxhash
+#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(3,8,0) */
+#endif /* HAVE_SKB_GET_HASH */
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,8,0)
+static inline void skb_tx_error(struct sk_buff *skb)
+{
+ return;
+}
+#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(3,8,0) */
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,14,0)
+unsigned int skb_zerocopy_headlen(const struct sk_buff *from);
+int skb_zerocopy(struct sk_buff *to, struct sk_buff *from, int len,
+ int hlen);
+#endif
+
+#ifndef HAVE_SKB_CLEAR_HASH
+static inline void skb_clear_hash(struct sk_buff *skb)
+{
+#if HAVE_RXHASH
+ skb->rxhash = 0;
+#endif
+#if HAVE_L4_RXHASH
+ skb->l4_rxhash = 0;
+#endif
+}
+#endif
+
+#ifndef HAVE_SKB_HAS_FRAG_LIST
+#define skb_has_frag_list skb_has_frags
+#endif
+
+#ifndef HAVE___SKB_FILL_PAGE_DESC
+static inline void __skb_fill_page_desc(struct sk_buff *skb, int i,
+ struct page *page, int off, int size)
+{
+ skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
+
+ __skb_frag_set_page(frag, page);
+ frag->page_offset = off;
+ skb_frag_size_set(frag, size);
+}
+#endif
+