ipip_tunnel_locate 588 net/ipv4/ipip.c t = ipip_tunnel_locate(net, &p, 0); ipip_tunnel_locate 614 net/ipv4/ipip.c t = ipip_tunnel_locate(net, &p, cmd == SIOCADDTUNNEL); ipip_tunnel_locate 667 net/ipv4/ipip.c if ((t = ipip_tunnel_locate(net, &p, 0)) == NULL)