+always_inline vnet_hw_interface_t *
+vnet_get_sup_hw_interface_api_visible_or_null (vnet_main_t * vnm,
+ u32 sw_if_index)
+{
+ vnet_sw_interface_t *si;
+ if (PREDICT_FALSE (pool_is_free_index (vnm->interface_main.sw_interfaces,
+ sw_if_index)))
+ return NULL;
+ si = vnet_get_sup_sw_interface (vnm, sw_if_index);
+ if (PREDICT_FALSE (si->flags & VNET_SW_INTERFACE_FLAG_HIDDEN))
+ return NULL;
+ ASSERT ((si->type == VNET_SW_INTERFACE_TYPE_HARDWARE) ||
+ (si->type == VNET_SW_INTERFACE_TYPE_PIPE));
+ return vnet_get_hw_interface (vnm, si->hw_if_index);
+}
+