+/* Sets 'pa' element numbered 'idx' to NULL. */
+void
+port_array_delete(struct port_array *pa, uint16_t idx)
+{
+ unsigned int l1_idx = PORT_ARRAY_L1(idx);
+ unsigned int l2_idx = PORT_ARRAY_L2(idx);
+ unsigned int l3_idx = PORT_ARRAY_L3(idx);
+
+ pa->l1[l1_idx]->l2[l2_idx]->l3[l3_idx] = NULL;
+}
+