mac_hwring_enable_intr
return (mac_hwring_enable_intr(rr_ring->arr_hw_rh));
extern int mac_hwring_enable_intr(mac_ring_handle_t);
(void) mac_hwring_enable_intr((mac_ring_handle_t) \
return (mac_hwring_enable_intr(rx_ringp->hw_rh));