gifconf_func_t    981 include/linux/netdevice.h extern int		register_gifconf(unsigned int family, gifconf_func_t * gifconf);
gifconf_func_t   2460 net/core/dev.c static gifconf_func_t * gifconf_list [NPROTO];
gifconf_func_t   2471 net/core/dev.c int register_gifconf(unsigned int family, gifconf_func_t * gifconf)