- memcpy(&tmp_iph, iph, iph->ihl * 4);
- nexthdr = *(u8 *)skb->data;
- skb_pull(skb, sizeof(struct ip_comp_hdr));
- skb->nh.raw += sizeof(struct ip_comp_hdr);
- memcpy(skb->nh.raw, &tmp_iph, tmp_iph.iph.ihl * 4);
- iph = skb->nh.iph;
- iph->tot_len = htons(ntohs(iph->tot_len) - sizeof(struct ip_comp_hdr));
- iph->protocol = nexthdr;
- skb->h.raw = skb->data;
+ ipch = (void *)skb->data;
+ iph->protocol = ipch->nexthdr;
+ skb->h.raw = skb->nh.raw + sizeof(*ipch);
+ __skb_pull(skb, sizeof(*ipch));