#define BRNF_BRIDGED 0x08
#define BRNF_NF_BRIDGE_PREROUTING 0x10
-static inline
-struct nf_bridge_info *nf_bridge_alloc(struct sk_buff *skb)
-{
- struct nf_bridge_info **nf_bridge = &(skb->nf_bridge);
-
- if ((*nf_bridge = kmalloc(sizeof(**nf_bridge), GFP_ATOMIC)) != NULL) {
- atomic_set(&(*nf_bridge)->use, 1);
- (*nf_bridge)->mask = 0;
- (*nf_bridge)->physindev = (*nf_bridge)->physoutdev = NULL;
-#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
- (*nf_bridge)->netoutdev = NULL;
-#endif
- }
-
- return *nf_bridge;
-}
-
/* 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);
+ }
}
-}
-
-static inline
-void nf_bridge_save_header(struct sk_buff *skb)
-{
- int header_size = 16;
-
- if (skb->protocol == __constant_htons(ETH_P_8021Q))
- header_size = 18;
-
- memcpy(skb->nf_bridge->data, skb->data - header_size, header_size);
+ return 0;
}
/* This is called by the IP fragmenting code and it ensures there is