datapath: clear l4_rxhash in skb_clear_hash.

[sliver-openvswitch.git] / datapath / linux / compat / include / linux / skbuff.h

diff --git a/datapath/linux/compat/include/linux/skbuff.h b/datapath/linux/compat/include/linux/skbuff.h
index 79b0b75..a9dc2e7 100644 (file)
--- a/datapath/linux/compat/include/linux/skbuff.h
+++ b/datapath/linux/compat/include/linux/skbuff.h
@@ -188,10 +188,40 @@ static inline bool skb_warn_if_lro(const struct sk_buff *skb)
 #endif
 
 #ifndef HAVE_SKB_FRAG_PAGE
+#include <linux/mm.h>
+
 static inline struct page *skb_frag_page(const skb_frag_t *frag)
 {
        return frag->page;
 }
+
+static inline void __skb_frag_set_page(skb_frag_t *frag, struct page *page)
+{
+       frag->page = page;
+}
+static inline void skb_frag_size_set(skb_frag_t *frag, unsigned int size)
+{
+       frag->size = size;
+}
+static inline void __skb_frag_ref(skb_frag_t *frag)
+{
+       get_page(skb_frag_page(frag));
+}
+static inline void __skb_frag_unref(skb_frag_t *frag)
+{
+       put_page(skb_frag_page(frag));
+}
+
+static inline void skb_frag_ref(struct sk_buff *skb, int f)
+{
+       __skb_frag_ref(&skb_shinfo(skb)->frags[f]);
+}
+
+static inline void skb_frag_unref(struct sk_buff *skb, int f)
+{
+       __skb_frag_unref(&skb_shinfo(skb)->frags[f]);
+}
+
 #endif
 
 #ifndef HAVE_SKB_RESET_MAC_LEN
@@ -213,15 +243,71 @@ static inline int skb_unclone(struct sk_buff *skb, gfp_t pri)
 }
 #endif
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37)
-extern u32 __skb_get_rxhash(struct sk_buff *skb);
-static inline __u32 skb_get_rxhash(struct sk_buff *skb)
+#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)
 {
-#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,34)
+#ifdef HAVE_RXHASH
        if (skb->rxhash)
                return skb->rxhash;
 #endif
-       return __skb_get_rxhash(skb);
+       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