loxi-prep: subtype flow_mod classes
diff --git a/tests/load.py b/tests/load.py
index 2f0c05f..58471e4 100644
--- a/tests/load.py
+++ b/tests/load.py
@@ -61,7 +61,7 @@
         act = ofp.action.output()
         act.port = lb_port + 1
 
-        request = ofp.message.flow_mod()
+        request = ofp.message.flow_add()
         request.match = match
         request.hard_timeout = 2 * barrier_count
 
@@ -215,8 +215,7 @@
             match.eth_dst = [0, 1, 2, 3, i / 256, i % 256]
             act = ofp.action.output()
             act.port = ofp.OFPP_CONTROLLER
-            request = ofp.message.flow_mod()
-            request.command = ofp.OFPFC_ADD
+            request = ofp.message.flow_add()
             request.buffer_id = 0xffffffff
             request.priority = num_flows - i
             request.out_port = ofp.OFPP_NONE