net: Allow netdevices to specify needed head/tailroom

[pandora-kernel.git] / net / xfrm / xfrm_output.c

diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c
index 09cd9c0..3f964db 100644 (file)
--- a/net/xfrm/xfrm_output.c
+++ b/net/xfrm/xfrm_output.c
@@ -25,11 +25,11 @@ static int xfrm_state_check_space(struct xfrm_state *x, struct sk_buff *skb)
        struct dst_entry *dst = skb->dst;
        int nhead = dst->header_len + LL_RESERVED_SPACE(dst->dev)
                - skb_headroom(skb);
+       int ntail = dst->dev->needed_tailroom - skb_tailroom(skb);
 
-       if (nhead > 0)
-               return pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
+       if (nhead > 0 || ntail > 0)
+               return pskb_expand_head(skb, nhead, ntail, GFP_ATOMIC);
 
-       /* Check tail too... */
        return 0;
 }