+ flow->key = masked_key;
+ flow->unmasked_key = key;
+
+ /* Make sure mask is unique in the system */
+ mask_p = ovs_sw_flow_mask_find(table, &mask);
+ if (!mask_p) {
+ /* Allocate a new mask if none exsits. */
+ mask_p = ovs_sw_flow_mask_alloc();
+ if (!mask_p)
+ goto err_flow_free;
+ mask_p->key = mask.key;
+ mask_p->range = mask.range;
+ ovs_sw_flow_mask_insert(table, mask_p);
+ }
+
+ ovs_sw_flow_mask_add_ref(mask_p);
+ flow->mask = mask_p;