mac_rx_def
flent->fe_cb_fn = (flow_fn_t)mac_rx_def;
mcip->mci_rx_fn = mac_rx_def;
mac_rx_set(mch, mac_rx_def, NULL);
if (mcip->mci_rx_fn != mac_rx_def) {
flent->fe_cb_fn = (flow_fn_t)mac_rx_def;
flent->fe_cb_fn = (flow_fn_t)mac_rx_def;
extern void mac_rx_def(void *, mac_resource_handle_t, mblk_t *, boolean_t);