gether_get_ifname
return gether_get_ifname(to_f_phonet_opts(item)->net, page, PAGE_SIZE);
EXPORT_SYMBOL_GPL(gether_get_ifname);
int gether_get_ifname(struct net_device *net, char *name, int len);
ret = gether_get_ifname(opts->net, page, PAGE_SIZE); \