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diff --git a/src/plugins/flowperpkt/flowperpkt.h b/src/plugins/flowperpkt/flowperpkt.h
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+++ b/src/plugins/flowperpkt/flowperpkt.h
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+/*
+ * flowperpkt.h - skeleton vpp engine plug-in header file
+ *
+ * Copyright (c) <current-year> <your-organization>
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef __included_flowperpkt_h__
+#define __included_flowperpkt_h__
+
+#include <vnet/vnet.h>
+#include <vnet/ip/ip.h>
+#include <vnet/ethernet/ethernet.h>
+
+#include <vppinfra/hash.h>
+#include <vppinfra/error.h>
+#include <vnet/flow/flow_report.h>
+#include <vnet/flow/flow_report_classify.h>
+
+/**
+ * @file
+ * @brief flow-per-packet plugin header file
+ */
+typedef struct
+{
+  /** API message ID base */
+  u16 msg_id_base;
+
+  /** Have the reports [templates] been created? */
+  int ipv4_report_created;
+  int l2_report_created;
+
+  /** stream/template IDs */
+  u16 ipv4_report_id;
+  u16 l2_report_id;
+
+  /** ipfix buffers under construction, per-worker thread */
+  vlib_buffer_t **ipv4_buffers_per_worker;
+  vlib_buffer_t **l2_buffers_per_worker;
+
+  /** frames containing ipfix buffers, per-worker thread */
+  vlib_frame_t **ipv4_frames_per_worker;
+  vlib_frame_t **l2_frames_per_worker;
+
+  /** next record offset, per worker thread */
+  u16 *ipv4_next_record_offset_per_worker;
+  u16 *l2_next_record_offset_per_worker;
+
+  /** Time reference pair */
+  u64 nanosecond_time_0;
+  f64 vlib_time_0;
+
+  /** convenience vlib_main_t pointer */
+  vlib_main_t *vlib_main;
+  /** convenience vnet_main_t pointer */
+  vnet_main_t *vnet_main;
+} flowperpkt_main_t;
+
+typedef enum
+{
+  FLOW_VARIANT_IPV4,
+  FLOW_VARIANT_L2,
+  FLOW_N_VARIANTS,
+} flowperpkt_variant_t;
+
+extern flowperpkt_main_t flowperpkt_main;
+
+extern vlib_node_registration_t flowperpkt_ipv4_node;
+
+void flowperpkt_flush_callback_ipv4 (void);
+void flowperpkt_flush_callback_l2 (void);
+
+#endif /* __included_flowperpkt_h__ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */