static int xfrm4_tunnel_input(struct xfrm_state *x, struct sk_buff *skb)
{
struct iphdr *iph = skb->nh.iph;
+ const unsigned char *old_mac;
int err = -EINVAL;
- switch(iph->protocol){
+ switch (iph->protocol){
case IPPROTO_IPIP:
break;
#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
skb->protocol = htons(ETH_P_IPV6);
}
#endif
- skb->mac.raw = memmove(skb->data - skb->mac_len,
- skb->mac.raw, skb->mac_len);
+ old_mac = skb_mac_header(skb);
+ skb_set_mac_header(skb, -skb->mac_len);
+ memmove(skb_mac_header(skb), old_mac, skb->mac_len);
skb->nh.raw = skb->data;
err = 0;