ipgre_newlink 1557 net/ipv4/ip_gre.c .newlink = ipgre_newlink, ipgre_newlink 1572 net/ipv4/ip_gre.c .newlink = ipgre_newlink, ipgre_newlink 1615 net/ipv4/ip_gre.c err = ipgre_newlink(net, dev, tb, NULL, NULL);