skb_maybe_pull_tail
err = skb_maybe_pull_tail(skb, off + sizeof(struct tcphdr),
err = skb_maybe_pull_tail(skb, off + sizeof(struct udphdr),
err = skb_maybe_pull_tail(skb,
err = skb_maybe_pull_tail(skb, off, MAX_IPV6_HDR_LEN);
err = skb_maybe_pull_tail(skb,
err = skb_maybe_pull_tail(skb,
err = skb_maybe_pull_tail(skb,