After commit 
308edfdf1563 ("gre6: Cleanup GREv6 receive path, call
common GRE functions") it's not used anywhere in the module, but
previously was used in ip6gre_rcv().
Fixes: 308edfdf1563 ("gre6: Cleanup GREv6 receive path, call common GRE functions")
Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
                                      &ipv6h->saddr, &ipv6h->daddr, tpi->key,
                                      tpi->proto);
        if (tunnel) {
-               ip6_tnl_rcv(tunnel, skb, tpi, NULL, false);
+               ip6_tnl_rcv(tunnel, skb, tpi, NULL, log_ecn_error);
 
                return PACKET_RCVD;
        }