Merge to Fedora kernel-2.6.17-1.2187_FC5 patched with stable patch-2.6.17.13-vs2...

[linux-2.6.git] / include / linux / netfilter_bridge.h

diff --git a/include/linux/netfilter_bridge.h b/include/linux/netfilter_bridge.h
index a75b84b..178a97e 100644 (file)
--- a/include/linux/netfilter_bridge.h
+++ b/include/linux/netfilter_bridge.h
@@ -47,18 +47,26 @@ enum nf_br_hook_priorities {
 #define BRNF_BRIDGED                   0x08
 #define BRNF_NF_BRIDGE_PREROUTING      0x10
 
-
 /* Only used in br_forward.c */
-static inline
-void nf_bridge_maybe_copy_header(struct sk_buff *skb)
+static inline int nf_bridge_maybe_copy_header(struct sk_buff *skb)
 {
+       int err;
+
        if (skb->nf_bridge) {
                if (skb->protocol == __constant_htons(ETH_P_8021Q)) {
+                       err = skb_cow(skb, 18);
+                       if (err)
+                               return err;
                        memcpy(skb->data - 18, skb->nf_bridge->data, 18);
                        skb_push(skb, 4);
-               } else
+               } else {
+                       err = skb_cow(skb, 16);
+                       if (err)
+                               return err;
                        memcpy(skb->data - 16, skb->nf_bridge->data, 16);
+               }
        }
+       return 0;
 }
 
 /* This is called by the IP fragmenting code and it ensures there is