flow sync state is not in flow_data

Author: jimmyzhai

dash-pipeline/bmv2/dash_headers.p4

@@ -236,7 +236,6 @@ const bit<16> FLOW_KEY_HDR_SIZE=flow_key_t.minSizeInBytes();
 header flow_data_t {
     bit<7> reserved;
     bit<1> is_unidirectional;
-    dash_flow_sync_state_t sync_state;
     dash_direction_t direction;
     bit<32> version;
     dash_flow_action_t actions;

dash-pipeline/bmv2/dash_metadata.p4

@@ -210,6 +210,7 @@ struct metadata_t {
 #else
     flow_data_t flow_data;
 #endif // TARGET_DPDK_PNA
+    dash_flow_sync_state_t flow_sync_state;
     flow_table_data_t flow_table;
     bit<16> bulk_get_session_id;
     bit<16> bulk_get_session_filter_id;

dash-pipeline/bmv2/dash_pipeline.p4

@@ -275,7 +275,7 @@ control dash_ingress(
         ha_stage.apply(hdr, meta);
 
         if (!meta.flow_enabled ||
-            (meta.flow_data.sync_state == dash_flow_sync_state_t.FLOW_MISS &&
+            (meta.flow_sync_state == dash_flow_sync_state_t.FLOW_MISS &&
              hdr.packet_meta.packet_source == dash_packet_source_t.EXTERNAL))
         {
             dash_match_stage.apply(hdr, meta);

dash-pipeline/bmv2/stages/conntrack_lookup.p4

@@ -173,7 +173,7 @@ control conntrack_flow_created_handle(inout headers_t hdr, inout metadata_t meta
 control conntrack_flow_handle(inout headers_t hdr, inout metadata_t meta)
 {
     apply {
-        switch (meta.flow_data.sync_state) {
+        switch (meta.flow_sync_state) {
             dash_flow_sync_state_t.FLOW_MISS: {
                 conntrack_flow_miss_handle.apply(hdr, meta);
             }
@@ -269,9 +269,9 @@ control conntrack_lookup_stage(inout headers_t hdr, inout metadata_t meta) {
         meta.flow_data.actions = dash_flow_action;
         meta.flow_data.meter_class = meter_class;
         meta.flow_data.is_unidirectional= is_unidirectional_flow;
-        meta.flow_data.sync_state = dash_flow_sync_state;
 
         /* Also set basic metadata */
+        meta.flow_sync_state = dash_flow_sync_state;
         meta.direction = dash_direction;
         meta.routing_actions = dash_flow_action;
         meta.meter_class = meter_class;
@@ -304,7 +304,7 @@ control conntrack_lookup_stage(inout headers_t hdr, inout metadata_t meta) {
     }
 
     action flow_miss() {
-        meta.flow_data.sync_state = dash_flow_sync_state_t.FLOW_MISS;
+        meta.flow_sync_state = dash_flow_sync_state_t.FLOW_MISS;
     }
 
     @SaiTable[name = "flow", api = "dash_flow", order = 1, enable_bulk_get_api = "true", enable_bulk_get_server = "true"]