@@ -203,6 +203,15 @@ struct skb_shared_info {
void * destructor_arg;
};
+/* The structure is for a skb which pages may point to
+ * an external buffer, which is not allocated from kernel space.
+ * It also contains a destructor for itself.
+ */
+struct skb_ext_page {
+ struct page *page;
+ void (*dtor)(struct skb_ext_page *);
+};
+
/* We divide dataref into two halves. The higher 16 bits hold references
* to the payload part of skb->data. The lower 16 bits hold references to
* the entire skb->data. A clone of a headerless skb holds the length of