l2tp_ctrl_txwin_size
return (l2tp_ctrl_txwin_size(_this) >= _this->snd_buffercnt)? 1 : 0;
if (l2tp_ctrl_txwin_size(_this) > 0) {
static int l2tp_ctrl_txwin_size(l2tp_ctrl *);
if (l2tp_ctrl_txwin_size(ctrl) <= 0) {