net: add opaque struct around skb frag page

I've split this bit out of the skb frag destructor patch since it helps enforce
the use of the fragment API.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 3 deletions

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index e27104039a39..ca4db40e75b8 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -668,14 +668,14 @@ int skb_copy_ubufs(struct sk_buff *skb, gfp_t gfp_mask)
 
         /* skb frags release userspace buffers */
         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
-                put_page(skb_shinfo(skb)->frags[i].page);
+                skb_frag_unref(skb, i);
 
         uarg->callback(uarg);
 
         /* skb frags point to kernel buffers */
         for (i = skb_shinfo(skb)->nr_frags; i > 0; i--) {
-                skb_shinfo(skb)->frags[i - 1].page_offset = 0;
-                skb_shinfo(skb)->frags[i - 1].page = head;
+                __skb_fill_page_desc(skb, i-1, head, 0,
+                                     skb_shinfo(skb)->frags[i - 1].size);
                 head = (struct page *)head->private;
         }