Minor refactoring for fabric.p4

Change-Id: I8c5bac678ead88bda42a0b49ea19d7c968bcc305
diff --git a/pipelines/fabric/src/main/resources/include/control/filtering.p4 b/pipelines/fabric/src/main/resources/include/control/filtering.p4
index 5a93e5b..58bf147 100644
--- a/pipelines/fabric/src/main/resources/include/control/filtering.p4
+++ b/pipelines/fabric/src/main/resources/include/control/filtering.p4
@@ -24,6 +24,8 @@
     inout parsed_headers_t hdr,
     inout fabric_metadata_t fabric_metadata,
     inout standard_metadata_t standard_metadata) {
+    direct_counter(CounterType.packets_and_bytes) ingress_port_vlan_counter;
+    direct_counter(CounterType.packets_and_bytes) fwd_classifier_counter;
 
     action drop() {
         mark_to_drop();
@@ -65,7 +67,9 @@
             nop;
             drop;
         }
-        const default_action = drop();
+
+        const default_action = nop();
+        counters = ingress_port_vlan_counter;
     }
 
     // Originally TMAC table in OF-DPA pipeline
@@ -81,6 +85,7 @@
         }
 
         const default_action = set_forwarding_type(FWD_BRIDGING);
+        counters = fwd_classifier_counter;
     }
 
     apply {