skb_gso_error_unwind
skb_gso_error_unwind(skb, protocol, tnl_hlen, mac_offset,
skb_gso_error_unwind(skb, protocol, tnl_hlen, mac_offset,
skb_gso_error_unwind(skb, mpls_protocol, mpls_hlen, mac_offset,
skb_gso_error_unwind(skb, htons(ETH_P_NSH), nsh_len,