ip6erspan_calc_hlen 1855 net/ipv6/ip6_gre.c t_hlen = ip6erspan_calc_hlen(tunnel); ip6erspan_calc_hlen 2236 net/ipv6/ip6_gre.c ip6gre_tnl_link_config_route(t, set_mtu, ip6erspan_calc_hlen(t));