IP6_ECN_decapsulate
err = IP6_ECN_decapsulate(oiph, skb);
err = IP6_ECN_decapsulate(oiph, skb);
err = IP6_ECN_decapsulate(oiph, skb);
return IP6_ECN_decapsulate(ipv6h, skb);
return IP6_ECN_decapsulate(ipv6h, skb);