Reorganize source tree to use single autotools instance

Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23
Signed-off-by: Damjan Marion <damarion@cisco.com>

9 files changed, 2234 insertions, 0 deletions

diff --git a/src/plugins/flowperpkt/flowperpkt.api b/src/plugins/flowperpkt/flowperpkt.api
new file mode 100644
index 00000000000..fa878f21ed3
--- /dev/null
+++ b/src/plugins/flowperpkt/flowperpkt.api
@@ -0,0 +1,42 @@
+/* Define a simple enable-disable binary API to control the feature */
+
+/** \file
+    This file defines the vpp control-plane API messages
+    used to control the flowperpkt plugin
+*/
+
+/** \brief Enable / disable per-packet IPFIX recording on an interface
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param is_add - add address if non-zero, else delete
+    @param is_ipv6 - if non-zero the address is ipv6, else ipv4
+    @param sw_if_index - index of the interface
+*/
+manual_print define flowperpkt_tx_interface_add_del
+{
+  /* Client identifier, set from api_main.my_client_index */
+  u32 client_index;
+
+  /* Arbitrary context, so client can match reply to request */
+  u32 context;
+
+  /* Enable / disable the feature */
+  u8 is_add;
+  u8 which;  /* 0 = ipv4, 1 = l2, 2 = ipv6 (not yet implemented) */
+
+  /* Interface handle */
+  u32 sw_if_index;
+};
+
+/** \brief Reply to enable/disable per-packet IPFIX recording messages
+    @param context - returned sender context, to match reply w/ request
+    @param retval - return code
+*/
+define flowperpkt_tx_interface_add_del_reply
+{
+  /* From the request */
+  u32 context;
+
+  /* Return value, zero means all OK */
+  i32 retval;
+};
diff --git a/src/plugins/flowperpkt/flowperpkt.c b/src/plugins/flowperpkt/flowperpkt.c
new file mode 100644
index 00000000000..fb71d5b0ffc
--- /dev/null
+++ b/src/plugins/flowperpkt/flowperpkt.c
@@ -0,0 +1,671 @@
+/*
+ * flowperpkt.c - per-packet data capture flow report plugin
+ *
+ * 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.
+ */
+
+/**
+ * @file
+ * @brief Per-packet IPFIX flow record generator plugin
+ *
+ * This file implements vpp plugin registration mechanics,
+ * debug CLI, and binary API handling.
+ */
+
+#include <vnet/vnet.h>
+#include <vnet/plugin/plugin.h>
+#include <flowperpkt/flowperpkt.h>
+
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+#include <vlibsocket/api.h>
+
+/* define message IDs */
+#include <flowperpkt/flowperpkt_msg_enum.h>
+
+/* define message structures */
+#define vl_typedefs
+#include <flowperpkt/flowperpkt_all_api_h.h>
+#undef vl_typedefs
+
+/* define generated endian-swappers */
+#define vl_endianfun
+#include <flowperpkt/flowperpkt_all_api_h.h>
+#undef vl_endianfun
+
+/* instantiate all the print functions we know about */
+#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
+#define vl_printfun
+#include <flowperpkt/flowperpkt_all_api_h.h>
+#undef vl_printfun
+
+flowperpkt_main_t flowperpkt_main;
+
+/* Get the API version number */
+#define vl_api_version(n,v) static u32 api_version=(v);
+#include <flowperpkt/flowperpkt_all_api_h.h>
+#undef vl_api_version
+
+/* Define the per-interface configurable features */
+/* *INDENT-OFF* */
+VNET_FEATURE_INIT (flow_perpacket_ipv4, static) =
+{
+  .arc_name = "ip4-output",
+  .node_name = "flowperpkt-ipv4",
+  .runs_before = VNET_FEATURES ("interface-output"),
+};
+
+VNET_FEATURE_INIT (flow_perpacket_l2, static) =
+{
+  .arc_name = "interface-output",
+  .node_name = "flowperpkt-l2",
+  .runs_before = VNET_FEATURES ("interface-tx"),
+};
+/* *INDENT-ON* */
+
+/*
+ * A handy macro to set up a message reply.
+ * Assumes that the following variables are available:
+ * mp - pointer to request message
+ * rmp - pointer to reply message type
+ * rv - return value
+ */
+#define REPLY_MACRO(t)                                          \
+do {                                                            \
+    unix_shared_memory_queue_t * q =                            \
+    vl_api_client_index_to_input_queue (mp->client_index);      \
+    if (!q)                                                     \
+        return;                                                 \
+                                                                \
+    rmp = vl_msg_api_alloc (sizeof (*rmp));                     \
+    rmp->_vl_msg_id = ntohs((t)+fm->msg_id_base);               \
+    rmp->context = mp->context;                                 \
+    rmp->retval = ntohl(rv);                                    \
+                                                                \
+    vl_msg_api_send_shmem (q, (u8 *)&rmp);                      \
+} while(0);
+
+/* Macro to finish up custom dump fns */
+#define FINISH                                  \
+    vec_add1 (s, 0);                            \
+    vl_print (handle, (char *)s);               \
+    vec_free (s);                               \
+    return handle;
+
+#define VALIDATE_SW_IF_INDEX(mp)				\
+ do { u32 __sw_if_index = ntohl(mp->sw_if_index);		\
+    vnet_main_t *__vnm = vnet_get_main();                       \
+    if (pool_is_free_index(__vnm->interface_main.sw_interfaces, \
+                           __sw_if_index)) {                    \
+        rv = VNET_API_ERROR_INVALID_SW_IF_INDEX;                \
+        goto bad_sw_if_index;                                   \
+    }                                                           \
+} while(0);
+
+#define BAD_SW_IF_INDEX_LABEL                   \
+do {                                            \
+bad_sw_if_index:                                \
+    ;                                           \
+} while (0);
+
+/**
+ * @brief Create an IPFIX template packet rewrite string
+ * @param frm flow_report_main_t *
+ * @param fr flow_report_t *
+ * @param collector_address ip4_address_t * the IPFIX collector address
+ * @param src_address ip4_address_t * the source address we should use
+ * @param collector_port u16 the collector port we should use, host byte order
+ * @returns u8 * vector containing the indicated IPFIX template packet
+ */
+static inline u8 *
+flowperpkt_template_rewrite_inline (flow_report_main_t * frm,
+				    flow_report_t * fr,
+				    ip4_address_t * collector_address,
+				    ip4_address_t * src_address,
+				    u16 collector_port, int variant)
+{
+  ip4_header_t *ip;
+  udp_header_t *udp;
+  ipfix_message_header_t *h;
+  ipfix_set_header_t *s;
+  ipfix_template_header_t *t;
+  ipfix_field_specifier_t *f;
+  ipfix_field_specifier_t *first_field;
+  u8 *rewrite = 0;
+  ip4_ipfix_template_packet_t *tp;
+  u32 field_count = 0;
+  flow_report_stream_t *stream;
+  flowperpkt_main_t *fm = &flowperpkt_main;
+
+  stream = &frm->streams[fr->stream_index];
+
+  if (variant == FLOW_VARIANT_IPV4)
+    {
+      /*
+       * ip4 Supported Fields:
+       *
+       * ingressInterface, TLV type 10, u32
+       * egressInterface, TLV type 14, u32
+       * sourceIpv4Address, TLV type 8, u32
+       * destinationIPv4Address, TLV type 12, u32
+       * ipClassOfService, TLV type 5, u8
+       * flowStartNanoseconds, TLV type 156, dateTimeNanoseconds (f64)
+       *   Implementation: f64 nanoseconds since VPP started
+       *   warning: wireshark doesn't really understand this TLV
+       * dataLinkFrameSize, TLV type 312, u16
+       *   warning: wireshark doesn't understand this TLV at all
+       */
+
+      /* Currently 7 fields */
+      field_count += 7;
+
+      /* allocate rewrite space */
+      vec_validate_aligned
+	(rewrite,
+	 sizeof (ip4_ipfix_template_packet_t)
+	 + field_count * sizeof (ipfix_field_specifier_t) - 1,
+	 CLIB_CACHE_LINE_BYTES);
+    }
+  else if (variant == FLOW_VARIANT_L2)
+    {
+      /*
+       * L2 Supported Fields:
+       *
+       * ingressInterface, TLV type 10, u32
+       * egressInterface, TLV type 14, u32
+       * sourceMacAddress, TLV type 56, u8[6] we hope
+       * destinationMacAddress, TLV type 57, u8[6] we hope
+       * ethernetType, TLV type 256, u16
+       * flowStartNanoseconds, TLV type 156, dateTimeNanoseconds (f64)
+       *   Implementation: f64 nanoseconds since VPP started
+       *   warning: wireshark doesn't really understand this TLV
+       * dataLinkFrameSize, TLV type 312, u16
+       *   warning: wireshark doesn't understand this TLV at all
+       */
+
+      /* Currently 7 fields */
+      field_count += 7;
+
+      /* allocate rewrite space */
+      vec_validate_aligned
+	(rewrite,
+	 sizeof (ip4_ipfix_template_packet_t)
+	 + field_count * sizeof (ipfix_field_specifier_t) - 1,
+	 CLIB_CACHE_LINE_BYTES);
+    }
+
+  tp = (ip4_ipfix_template_packet_t *) rewrite;
+  ip = (ip4_header_t *) & tp->ip4;
+  udp = (udp_header_t *) (ip + 1);
+  h = (ipfix_message_header_t *) (udp + 1);
+  s = (ipfix_set_header_t *) (h + 1);
+  t = (ipfix_template_header_t *) (s + 1);
+  first_field = f = (ipfix_field_specifier_t *) (t + 1);
+
+  ip->ip_version_and_header_length = 0x45;
+  ip->ttl = 254;
+  ip->protocol = IP_PROTOCOL_UDP;
+  ip->src_address.as_u32 = src_address->as_u32;
+  ip->dst_address.as_u32 = collector_address->as_u32;
+  udp->src_port = clib_host_to_net_u16 (stream->src_port);
+  udp->dst_port = clib_host_to_net_u16 (collector_port);
+  udp->length = clib_host_to_net_u16 (vec_len (rewrite) - sizeof (*ip));
+
+  /* FIXUP: message header export_time */
+  /* FIXUP: message header sequence_number */
+  h->domain_id = clib_host_to_net_u32 (stream->domain_id);
+
+  /* Add TLVs to the template */
+  if (variant == FLOW_VARIANT_IPV4)
+    {
+      f->e_id_length =
+	ipfix_e_id_length (0 /* enterprise */ , ingressInterface,
+			   4);
+      f++;
+      f->e_id_length =
+	ipfix_e_id_length (0 /* enterprise */ , egressInterface,
+			   4);
+      f++;
+      f->e_id_length =
+	ipfix_e_id_length (0 /* enterprise */ , sourceIPv4Address,
+			   4);
+      f++;
+      f->e_id_length =
+	ipfix_e_id_length (0 /* enterprise */ , destinationIPv4Address, 4);
+      f++;
+      f->e_id_length =
+	ipfix_e_id_length (0 /* enterprise */ , ipClassOfService,
+			   1);
+      f++;
+      f->e_id_length =
+	ipfix_e_id_length (0 /* enterprise */ , flowStartNanoseconds,
+			   8);
+      f++;
+      f->e_id_length =
+	ipfix_e_id_length (0 /* enterprise */ , dataLinkFrameSize,
+			   2);
+      f++;
+    }
+  else if (variant == FLOW_VARIANT_L2)
+    {
+      f->e_id_length =
+	ipfix_e_id_length (0 /* enterprise */ , ingressInterface,
+			   4);
+      f++;
+      f->e_id_length =
+	ipfix_e_id_length (0 /* enterprise */ , egressInterface,
+			   4);
+      f++;
+      f->e_id_length =
+	ipfix_e_id_length (0 /* enterprise */ , sourceMacAddress,
+			   6);
+      f++;
+      f->e_id_length =
+	ipfix_e_id_length (0 /* enterprise */ , destinationMacAddress, 6);
+      f++;
+      f->e_id_length = ipfix_e_id_length (0 /* enterprise */ , ethernetType,
+					  2);
+      f++;
+      f->e_id_length =
+	ipfix_e_id_length (0 /* enterprise */ , flowStartNanoseconds,
+			   8);
+      f++;
+      f->e_id_length =
+	ipfix_e_id_length (0 /* enterprise */ , dataLinkFrameSize,
+			   2);
+      f++;
+    }
+
+  /* Extend in the obvious way, right here... */
+
+  /* Back to the template packet... */
+  ip = (ip4_header_t *) & tp->ip4;
+  udp = (udp_header_t *) (ip + 1);
+
+  ASSERT (f - first_field);
+  /* Field count in this template */
+  t->id_count = ipfix_id_count (fr->template_id, f - first_field);
+
+  if (variant == FLOW_VARIANT_IPV4)
+    fm->ipv4_report_id = fr->template_id;
+  else if (variant == FLOW_VARIANT_L2)
+    fm->l2_report_id = fr->template_id;
+
+  /* set length in octets */
+  s->set_id_length =
+    ipfix_set_id_length (2 /* set_id */ , (u8 *) f - (u8 *) s);
+
+  /* message length in octets */
+  h->version_length = version_length ((u8 *) f - (u8 *) h);
+
+  ip->length = clib_host_to_net_u16 ((u8 *) f - (u8 *) ip);
+  ip->checksum = ip4_header_checksum (ip);
+
+  return rewrite;
+}
+
+u8 *
+flowperpkt_template_rewrite_ipv4 (flow_report_main_t * frm,
+				  flow_report_t * fr,
+				  ip4_address_t * collector_address,
+				  ip4_address_t * src_address,
+				  u16 collector_port)
+{
+  return flowperpkt_template_rewrite_inline
+    (frm, fr, collector_address, src_address, collector_port,
+     FLOW_VARIANT_IPV4);
+}
+
+u8 *
+flowperpkt_template_rewrite_l2 (flow_report_main_t * frm,
+				flow_report_t * fr,
+				ip4_address_t * collector_address,
+				ip4_address_t * src_address,
+				u16 collector_port)
+{
+  return flowperpkt_template_rewrite_inline
+    (frm, fr, collector_address, src_address, collector_port,
+     FLOW_VARIANT_L2);
+}
+
+
+/**
+ * @brief Flush accumulated data
+ * @param frm flow_report_main_t *
+ * @param fr flow_report_t *
+ * @param f vlib_frame_t *
+ *
+ * <em>Notes:</em>
+ * This function must simply return the incoming frame, or no template packets
+ * will be sent.
+ */
+vlib_frame_t *
+flowperpkt_data_callback_ipv4 (flow_report_main_t * frm,
+			       flow_report_t * fr,
+			       vlib_frame_t * f, u32 * to_next,
+			       u32 node_index)
+{
+  flowperpkt_flush_callback_ipv4 ();
+  return f;
+}
+
+vlib_frame_t *
+flowperpkt_data_callback_l2 (flow_report_main_t * frm,
+			     flow_report_t * fr,
+			     vlib_frame_t * f, u32 * to_next, u32 node_index)
+{
+  flowperpkt_flush_callback_l2 ();
+  return f;
+}
+
+/**
+ * @brief configure / deconfigure the IPFIX flow-per-packet
+ * @param fm flowperpkt_main_t * fm
+ * @param sw_if_index u32 the desired interface
+ * @param is_add int 1 to enable the feature, 0 to disable it
+ * @returns 0 if successful, non-zero otherwise
+ */
+
+static int flowperpkt_tx_interface_add_del_feature
+  (flowperpkt_main_t * fm, u32 sw_if_index, int which, int is_add)
+{
+  flow_report_main_t *frm = &flow_report_main;
+  vnet_flow_report_add_del_args_t _a, *a = &_a;
+  int rv;
+
+  if (which == FLOW_VARIANT_IPV4 && !fm->ipv4_report_created)
+    {
+      memset (a, 0, sizeof (*a));
+      a->rewrite_callback = flowperpkt_template_rewrite_ipv4;
+      a->flow_data_callback = flowperpkt_data_callback_ipv4;
+      a->is_add = 1;
+      a->domain_id = 1;		/*$$$$ config parameter */
+      a->src_port = 4739;	/*$$$$ config parameter */
+      fm->ipv4_report_created = 1;
+
+      rv = vnet_flow_report_add_del (frm, a);
+      if (rv)
+	{
+	  clib_warning ("vnet_flow_report_add_del returned %d", rv);
+	  return -1;
+	}
+    }
+  else if (which == FLOW_VARIANT_L2 && !fm->l2_report_created)
+    {
+      memset (a, 0, sizeof (*a));
+      a->rewrite_callback = flowperpkt_template_rewrite_l2;
+      a->flow_data_callback = flowperpkt_data_callback_l2;
+      a->is_add = 1;
+      a->domain_id = 1;		/*$$$$ config parameter */
+      a->src_port = 4739;	/*$$$$ config parameter */
+      fm->l2_report_created = 1;
+
+      rv = vnet_flow_report_add_del (frm, a);
+      if (rv)
+	{
+	  clib_warning ("vnet_flow_report_add_del returned %d", rv);
+	  return -1;
+	}
+    }
+
+  if (which == FLOW_VARIANT_IPV4)
+    vnet_feature_enable_disable ("ip4-output", "flowperpkt-ipv4",
+				 sw_if_index, is_add, 0, 0);
+  else if (which == FLOW_VARIANT_L2)
+    vnet_feature_enable_disable ("interface-output", "flowperpkt-l2",
+				 sw_if_index, is_add, 0, 0);
+
+  return 0;
+}
+
+/**
+ * @brief API message handler
+ * @param mp vl_api_flowperpkt_tx_interface_add_del_t * mp the api message
+ */
+void vl_api_flowperpkt_tx_interface_add_del_t_handler
+  (vl_api_flowperpkt_tx_interface_add_del_t * mp)
+{
+  flowperpkt_main_t *fm = &flowperpkt_main;
+  vl_api_flowperpkt_tx_interface_add_del_reply_t *rmp;
+  u32 sw_if_index = ntohl (mp->sw_if_index);
+  int rv = 0;
+
+  VALIDATE_SW_IF_INDEX (mp);
+
+  if (mp->which != FLOW_VARIANT_IPV4 && mp->which != FLOW_VARIANT_L2)
+    {
+      rv = VNET_API_ERROR_UNIMPLEMENTED;
+      goto out;
+    }
+
+  rv = flowperpkt_tx_interface_add_del_feature (fm, sw_if_index, mp->which,
+						mp->is_add);
+out:
+  BAD_SW_IF_INDEX_LABEL;
+
+  REPLY_MACRO (VL_API_FLOWPERPKT_TX_INTERFACE_ADD_DEL_REPLY);
+}
+
+/**
+ * @brief API message custom-dump function
+ * @param mp vl_api_flowperpkt_tx_interface_add_del_t * mp the api message
+ * @param handle void * print function handle
+ * @returns u8 * output string
+ */
+static void *vl_api_flowperpkt_tx_interface_add_del_t_print
+  (vl_api_flowperpkt_tx_interface_add_del_t * mp, void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: flowperpkt_tx_interface_add_del ");
+  s = format (s, "sw_if_index %d is_add %d which %d ",
+	      clib_host_to_net_u32 (mp->sw_if_index),
+	      (int) mp->is_add, (int) mp->which);
+  FINISH;
+}
+
+/* List of message types that this plugin understands */
+#define foreach_flowperpkt_plugin_api_msg                           \
+_(FLOWPERPKT_TX_INTERFACE_ADD_DEL, flowperpkt_tx_interface_add_del)
+
+/**
+ * @brief plugin-api required function
+ * @param vm vlib_main_t * vlib main data structure pointer
+ * @param h vlib_plugin_handoff_t * handoff structure
+ * @param from_early_init int notused
+ *
+ * <em>Notes:</em>
+ * This routine exists to convince the vlib plugin framework that
+ * we haven't accidentally copied a random .dll into the plugin directory.
+ *
+ * Also collects global variable pointers passed from the vpp engine
+ */
+clib_error_t *
+vlib_plugin_register (vlib_main_t * vm, vnet_plugin_handoff_t * h,
+		      int from_early_init)
+{
+  flowperpkt_main_t *fm = &flowperpkt_main;
+  clib_error_t *error = 0;
+
+  fm->vlib_main = vm;
+  fm->vnet_main = h->vnet_main;
+
+  return error;
+}
+
+static clib_error_t *
+flowperpkt_tx_interface_add_del_feature_command_fn (vlib_main_t * vm,
+						    unformat_input_t * input,
+						    vlib_cli_command_t * cmd)
+{
+  flowperpkt_main_t *fm = &flowperpkt_main;
+  u32 sw_if_index = ~0;
+  int is_add = 1;
+  u8 which = FLOW_VARIANT_IPV4;
+
+  int rv;
+
+  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (input, "disable"))
+	is_add = 0;
+      else if (unformat (input, "%U", unformat_vnet_sw_interface,
+			 fm->vnet_main, &sw_if_index));
+      else if (unformat (input, "l2"))
+	which = FLOW_VARIANT_L2;
+      else
+	break;
+    }
+
+  if (sw_if_index == ~0)
+    return clib_error_return (0, "Please specify an interface...");
+
+  rv =
+    flowperpkt_tx_interface_add_del_feature (fm, sw_if_index, which, is_add);
+  switch (rv)
+    {
+    case 0:
+      break;
+
+    case VNET_API_ERROR_INVALID_SW_IF_INDEX:
+      return clib_error_return
+	(0, "Invalid interface, only works on physical ports");
+      break;
+
+    case VNET_API_ERROR_UNIMPLEMENTED:
+      return clib_error_return (0, "ip6 not supported");
+      break;
+
+    default:
+      return clib_error_return (0, "flowperpkt_enable_disable returned %d",
+				rv);
+    }
+  return 0;
+}
+
+/*?
+ * '<em>flowperpkt feature add-del</em>' commands to enable/disable
+ * per-packet IPFIX flow record generation on an interface
+ *
+ * @cliexpar
+ * @parblock
+ * To enable per-packet IPFIX flow-record generation on an interface:
+ * @cliexcmd{flowperpkt feature add-del GigabitEthernet2/0/0}
+ *
+ * To disable per-packet IPFIX flow-record generation on an interface:
+ * @cliexcmd{flowperpkt feature add-del GigabitEthernet2/0/0 disable}
+ * @cliexend
+ * @endparblock
+?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (flowperpkt_enable_disable_command, static) = {
+    .path = "flowperpkt feature add-del",
+    .short_help =
+    "flowperpkt feature add-del <interface-name> [disable]",
+    .function = flowperpkt_tx_interface_add_del_feature_command_fn,
+};
+/* *INDENT-ON* */
+
+/**
+ * @brief Set up the API message handling tables
+ * @param vm vlib_main_t * vlib main data structure pointer
+ * @returns 0 to indicate all is well
+ */
+static clib_error_t *
+flowperpkt_plugin_api_hookup (vlib_main_t * vm)
+{
+  flowperpkt_main_t *fm = &flowperpkt_main;
+#define _(N,n)                                                  \
+    vl_msg_api_set_handlers((VL_API_##N + fm->msg_id_base),     \
+                           #n,					\
+                           vl_api_##n##_t_handler,              \
+                           vl_noop_handler,                     \
+                           vl_api_##n##_t_endian,               \
+                           vl_api_##n##_t_print,                \
+                           sizeof(vl_api_##n##_t), 1);
+  foreach_flowperpkt_plugin_api_msg;
+#undef _
+
+  return 0;
+}
+
+#define vl_msg_name_crc_list
+#include <flowperpkt/flowperpkt_all_api_h.h>
+#undef vl_msg_name_crc_list
+
+static void
+setup_message_id_table (flowperpkt_main_t * fm, api_main_t * am)
+{
+#define _(id,n,crc) \
+  vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id + fm->msg_id_base);
+  foreach_vl_msg_name_crc_flowperpkt;
+#undef _
+}
+
+/**
+ * @brief Set up the API message handling tables
+ * @param vm vlib_main_t * vlib main data structure pointer
+ * @returns 0 to indicate all is well, or a clib_error_t
+ */
+static clib_error_t *
+flowperpkt_init (vlib_main_t * vm)
+{
+  flowperpkt_main_t *fm = &flowperpkt_main;
+  vlib_thread_main_t *tm = &vlib_thread_main;
+  clib_error_t *error = 0;
+  u32 num_threads;
+  u8 *name;
+
+  /* Construct the API name */
+  name = format (0, "flowperpkt_%08x%c", api_version, 0);
+
+  /* Ask for a correctly-sized block of API message decode slots */
+  fm->msg_id_base = vl_msg_api_get_msg_ids
+    ((char *) name, VL_MSG_FIRST_AVAILABLE);
+
+  /* Hook up message handlers */
+  error = flowperpkt_plugin_api_hookup (vm);
+
+  /* Add our API messages to the global name_crc hash table */
+  setup_message_id_table (fm, &api_main);
+
+  vec_free (name);
+
+  /* Decide how many worker threads we have */
+  num_threads = 1 /* main thread */  + tm->n_eal_threads;
+
+  /* Allocate per worker thread vectors */
+  vec_validate (fm->ipv4_buffers_per_worker, num_threads - 1);
+  vec_validate (fm->l2_buffers_per_worker, num_threads - 1);
+  vec_validate (fm->ipv4_frames_per_worker, num_threads - 1);
+  vec_validate (fm->l2_frames_per_worker, num_threads - 1);
+  vec_validate (fm->ipv4_next_record_offset_per_worker, num_threads - 1);
+  vec_validate (fm->l2_next_record_offset_per_worker, num_threads - 1);
+
+  /* Set up time reference pair */
+  fm->vlib_time_0 = vlib_time_now (vm);
+  fm->nanosecond_time_0 = unix_time_now_nsec ();
+
+  return error;
+}
+
+VLIB_INIT_FUNCTION (flowperpkt_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/src/plugins/flowperpkt/flowperpkt.h b/src/plugins/flowperpkt/flowperpkt.h
new file mode 100644
index 00000000000..20f6939dda5
--- /dev/null
+++ b/src/plugins/flowperpkt/flowperpkt.h
@@ -0,0 +1,90 @@
+/*
+ * 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:
+ */
diff --git a/src/plugins/flowperpkt/flowperpkt_all_api_h.h b/src/plugins/flowperpkt/flowperpkt_all_api_h.h
new file mode 100644
index 00000000000..329c375abca
--- /dev/null
+++ b/src/plugins/flowperpkt/flowperpkt_all_api_h.h
@@ -0,0 +1,18 @@
+/*
+ * flowperpkt_all_api_h.h - plug-in api #include 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.
+ */
+/* Include the generated file, see BUILT_SOURCES in Makefile.am */
+#include <flowperpkt/flowperpkt.api.h>
diff --git a/src/plugins/flowperpkt/flowperpkt_msg_enum.h b/src/plugins/flowperpkt/flowperpkt_msg_enum.h
new file mode 100644
index 00000000000..3177e77a63b
--- /dev/null
+++ b/src/plugins/flowperpkt/flowperpkt_msg_enum.h
@@ -0,0 +1,31 @@
+/*
+ * flowperpkt_msg_enum.h - vpp engine plug-in message enumeration
+ *
+ * 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_msg_enum_h
+#define included_flowperpkt_msg_enum_h
+
+#include <vppinfra/byte_order.h>
+
+#define vl_msg_id(n,h) n,
+typedef enum
+{
+#include <flowperpkt/flowperpkt_all_api_h.h>
+  /* We'll want to know how many messages IDs we need... */
+  VL_MSG_FIRST_AVAILABLE,
+} vl_msg_id_t;
+#undef vl_msg_id
+
+#endif /* included_flowperpkt_msg_enum_h */
diff --git a/src/plugins/flowperpkt/flowperpkt_plugin_doc.md b/src/plugins/flowperpkt/flowperpkt_plugin_doc.md
new file mode 100644
index 00000000000..ed76c45c2dc
--- /dev/null
+++ b/src/plugins/flowperpkt/flowperpkt_plugin_doc.md
@@ -0,0 +1,13 @@
+Per-packet IPFIX flow record plugin    {#flowperpkt_plugin_doc}
+===================================
+
+## Introduction
+
+This plugin generates one ipfix record entry per packet transmitted
+on interfaces which have the feature enabled
+
+## Sample configuration
+
+set ipfix exporter collector 192.168.6.2 src 192.168.6.1 template-interval 20 port 4739 path-mtu 1500
+
+flowperpkt feature add-del GigabitEthernet2/3/0
diff --git a/src/plugins/flowperpkt/flowperpkt_test.c b/src/plugins/flowperpkt/flowperpkt_test.c
new file mode 100644
index 00000000000..716818ffe0a
--- /dev/null
+++ b/src/plugins/flowperpkt/flowperpkt_test.c
@@ -0,0 +1,234 @@
+/*
+ * flowperpkt.c - skeleton vpp-api-test plug-in
+ *
+ * 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.
+ */
+#include <vat/vat.h>
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+#include <vlibsocket/api.h>
+#include <vppinfra/error.h>
+
+/**
+ * @file vpp_api_test plugin
+ */
+
+uword unformat_sw_if_index (unformat_input_t * input, va_list * args);
+
+/* Declare message IDs */
+#include <flowperpkt/flowperpkt_msg_enum.h>
+
+/* define message structures */
+#define vl_typedefs
+#include <flowperpkt/flowperpkt_all_api_h.h>
+#undef vl_typedefs
+
+/* declare message handlers for each api */
+
+#define vl_endianfun		/* define message structures */
+#include <flowperpkt/flowperpkt_all_api_h.h>
+#undef vl_endianfun
+
+/* instantiate all the print functions we know about */
+#define vl_print(handle, ...)
+#define vl_printfun
+#include <flowperpkt/flowperpkt_all_api_h.h>
+#undef vl_printfun
+
+/* Get the API version number. */
+#define vl_api_version(n,v) static u32 api_version=(v);
+#include <flowperpkt/flowperpkt_all_api_h.h>
+#undef vl_api_version
+
+typedef struct
+{
+    /** API message ID base */
+  u16 msg_id_base;
+    /** vat_main_t pointer */
+  vat_main_t *vat_main;
+} flowperpkt_test_main_t;
+
+flowperpkt_test_main_t flowperpkt_test_main;
+
+#define foreach_standard_reply_retval_handler   \
+_(flowperpkt_tx_interface_add_del_reply)
+
+#define _(n)                                            \
+    static void vl_api_##n##_t_handler                  \
+    (vl_api_##n##_t * mp)                               \
+    {                                                   \
+        vat_main_t * vam = flowperpkt_test_main.vat_main;   \
+        i32 retval = ntohl(mp->retval);                 \
+        if (vam->async_mode) {                          \
+            vam->async_errors += (retval < 0);          \
+        } else {                                        \
+            vam->retval = retval;                       \
+            vam->result_ready = 1;                      \
+        }                                               \
+    }
+foreach_standard_reply_retval_handler;
+#undef _
+
+/*
+ * Table of message reply handlers, must include boilerplate handlers
+ * we just generated
+ */
+#define foreach_vpe_api_reply_msg               \
+_(FLOWPERPKT_TX_INTERFACE_ADD_DEL_REPLY,        \
+  flowperpkt_tx_interface_add_del_reply)
+
+
+/* M: construct, but don't yet send a message */
+
+#define M(T,t)                                                  \
+do {                                                            \
+    vam->result_ready = 0;                                      \
+    mp = vl_msg_api_alloc(sizeof(*mp));                         \
+    memset (mp, 0, sizeof (*mp));                               \
+    mp->_vl_msg_id = ntohs (VL_API_##T + sm->msg_id_base);      \
+    mp->client_index = vam->my_client_index;                    \
+} while(0);
+
+#define M2(T,t,n)                                               \
+do {                                                            \
+    vam->result_ready = 0;                                      \
+    mp = vl_msg_api_alloc(sizeof(*mp)+(n));                     \
+    memset (mp, 0, sizeof (*mp));                               \
+    mp->_vl_msg_id = ntohs (VL_API_##T + sm->msg_id_base);      \
+    mp->client_index = vam->my_client_index;                    \
+} while(0);
+
+/* S: send a message */
+#define S (vl_msg_api_send_shmem (vam->vl_input_queue, (u8 *)&mp))
+
+/* W: wait for results, with timeout */
+#define W                                       \
+do {                                            \
+    timeout = vat_time_now (vam) + 1.0;         \
+                                                \
+    while (vat_time_now (vam) < timeout) {      \
+        if (vam->result_ready == 1) {           \
+            return (vam->retval);               \
+        }                                       \
+    }                                           \
+    return -99;                                 \
+} while(0);
+
+static int
+api_flowperpkt_tx_interface_add_del (vat_main_t * vam)
+{
+  flowperpkt_test_main_t *sm = &flowperpkt_test_main;
+  unformat_input_t *i = vam->input;
+  f64 timeout;
+  int enable_disable = 1;
+  u8 which = 0;			/* ipv4 by default */
+  u32 sw_if_index = ~0;
+  vl_api_flowperpkt_tx_interface_add_del_t *mp;
+
+  /* Parse args required to build the message */
+  while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (i, "%U", unformat_sw_if_index, vam, &sw_if_index))
+	;
+      else if (unformat (i, "sw_if_index %d", &sw_if_index))
+	;
+      else if (unformat (i, "disable"))
+	enable_disable = 0;
+      else if (unformat (i, "l2"))
+	which = 1;
+      else
+	break;
+    }
+
+  if (sw_if_index == ~0)
+    {
+      errmsg ("missing interface name / explicit sw_if_index number \n");
+      return -99;
+    }
+
+  /* Construct the API message */
+  M (FLOWPERPKT_TX_INTERFACE_ADD_DEL, flowperpkt_tx_interface_add_del);
+  mp->sw_if_index = ntohl (sw_if_index);
+  mp->is_add = enable_disable;
+  mp->which = which;
+
+  /* send it... */
+  S;
+
+  /* Wait for a reply... */
+  W;
+}
+
+/*
+ * List of messages that the api test plugin sends,
+ * and that the data plane plugin processes
+ */
+#define foreach_vpe_api_msg \
+_(flowperpkt_tx_interface_add_del, "<intfc> [disable]")
+
+void
+vat_api_hookup (vat_main_t * vam)
+{
+  flowperpkt_test_main_t *sm = &flowperpkt_test_main;
+  /* Hook up handlers for replies from the data plane plug-in */
+#define _(N,n)                                                  \
+    vl_msg_api_set_handlers((VL_API_##N + sm->msg_id_base),     \
+                           #n,                                  \
+                           vl_api_##n##_t_handler,              \
+                           vl_noop_handler,                     \
+                           vl_api_##n##_t_endian,               \
+                           vl_api_##n##_t_print,                \
+                           sizeof(vl_api_##n##_t), 1);
+  foreach_vpe_api_reply_msg;
+#undef _
+
+  /* API messages we can send */
+#define _(n,h) hash_set_mem (vam->function_by_name, #n, api_##n);
+  foreach_vpe_api_msg;
+#undef _
+
+  /* Help strings */
+#define _(n,h) hash_set_mem (vam->help_by_name, #n, h);
+  foreach_vpe_api_msg;
+#undef _
+}
+
+clib_error_t *
+vat_plugin_register (vat_main_t * vam)
+{
+  flowperpkt_test_main_t *sm = &flowperpkt_test_main;
+  u8 *name;
+
+  sm->vat_main = vam;
+
+  /* Ask the vpp engine for the first assigned message-id */
+  name = format (0, "flowperpkt_%08x%c", api_version, 0);
+  sm->msg_id_base = vl_client_get_first_plugin_msg_id ((char *) name);
+
+  /* Don't attempt to hook up API messages if the data plane plugin is AWOL */
+  if (sm->msg_id_base != (u16) ~ 0)
+    vat_api_hookup (vam);
+
+  vec_free (name);
+
+  return 0;
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/src/plugins/flowperpkt/l2_node.c b/src/plugins/flowperpkt/l2_node.c
new file mode 100644
index 00000000000..1c2f681e1e1
--- /dev/null
+++ b/src/plugins/flowperpkt/l2_node.c
@@ -0,0 +1,561 @@
+/*
+ * l2_node.c - l2 ipfix-per-packet graph node
+ *
+ * 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.
+ */
+#include <vlib/vlib.h>
+#include <vnet/vnet.h>
+#include <vnet/pg/pg.h>
+#include <vppinfra/error.h>
+#include <flowperpkt/flowperpkt.h>
+
+/**
+ * @file l2 flow record generator graph node
+ */
+
+typedef struct
+{
+  /** interface handle */
+  u32 rx_sw_if_index;
+  u32 tx_sw_if_index;
+  /** src and dst L2 addresses */
+  u8 src_mac[6];
+  u8 dst_mac[6];
+  /** Ethertype */
+  u16 ethertype;
+  /** packet timestamp */
+  u64 timestamp;
+  /** size of the buffer */
+  u16 buffer_size;
+} flowperpkt_l2_trace_t;
+
+/* packet trace format function */
+static u8 *
+format_flowperpkt_l2_trace (u8 * s, va_list * args)
+{
+  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+  flowperpkt_l2_trace_t *t = va_arg (*args, flowperpkt_l2_trace_t *);
+
+  s = format (s,
+	      "FLOWPERPKT-L2: rx_sw_if_index %d, tx_sw_if_index %d, src %U dst %U ethertype %0x2, timestamp %lld, size %d",
+	      t->rx_sw_if_index, t->tx_sw_if_index,
+	      format_ethernet_address, &t->src_mac,
+	      format_ethernet_address, &t->dst_mac,
+	      t->ethertype, t->timestamp, t->buffer_size);
+  return s;
+}
+
+vlib_node_registration_t flowperpkt_l2_node;
+
+/* No counters at the moment */
+#define foreach_flowperpkt_l2_error
+
+typedef enum
+{
+#define _(sym,str) FLOWPERPKT_ERROR_##sym,
+  foreach_flowperpkt_l2_error
+#undef _
+    FLOWPERPKT_N_ERROR,
+} flowperpkt_l2_error_t;
+
+static char *flowperpkt_l2_error_strings[] = {
+#define _(sym,string) string,
+  foreach_flowperpkt_l2_error
+#undef _
+};
+
+typedef enum
+{
+  FLOWPERPKT_L2_NEXT_DROP,
+  FLOWPERPKT_L2_NEXT_IP4_LOOKUP,
+  FLOWPERPKT_L2_N_NEXT,
+} flowperpkt_l2_next_t;
+
+/**
+ * @brief add an entry to the flow record under construction
+ * @param vm vlib_main_t * current worker thread main structure pointer
+ * @param fm flowperpkt_main_t * flow-per-packet main structure pointer
+ * @param sw_if_index u32 interface handle
+ * @param tos u8 ToS bits from the packet
+ * @param timestamp u64 timestamp, nanoseconds since 1/1/70
+ * @param length u16 ip length of the packet
+ * @param do_flush int 1 = flush all cached records, 0 = construct a record
+ */
+
+static inline void
+add_to_flow_record_l2 (vlib_main_t * vm,
+		       vlib_node_runtime_t * node,
+		       flowperpkt_main_t * fm,
+		       u32 rx_sw_if_index, u32 tx_sw_if_index,
+		       u8 * src_mac, u8 * dst_mac,
+		       u16 ethertype, u64 timestamp, u16 length, int do_flush)
+{
+  u32 my_cpu_number = vm->cpu_index;
+  flow_report_main_t *frm = &flow_report_main;
+  ip4_header_t *ip;
+  udp_header_t *udp;
+  ip4_ipfix_template_packet_t *tp;
+  ipfix_message_header_t *h;
+  ipfix_set_header_t *s;
+  vlib_frame_t *f;
+  vlib_buffer_t *b0;
+  u16 offset;
+  u32 bi0;
+  vlib_buffer_free_list_t *fl;
+
+  /* Find or allocate a buffer */
+  b0 = fm->l2_buffers_per_worker[my_cpu_number];
+
+  /* Need to allocate a buffer? */
+  if (PREDICT_FALSE (b0 == 0))
+    {
+      /* Nothing to flush */
+      if (do_flush)
+	return;
+
+      /* $$$$ drop counter? */
+      if (vlib_buffer_alloc (vm, &bi0, 1) != 1)
+	return;
+
+      /* Initialize the buffer */
+      b0 = fm->l2_buffers_per_worker[my_cpu_number] =
+	vlib_get_buffer (vm, bi0);
+      fl =
+	vlib_buffer_get_free_list (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
+      vlib_buffer_init_for_free_list (b0, fl);
+      VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
+      offset = 0;
+    }
+  else
+    {
+      /* use the current buffer */
+      bi0 = vlib_get_buffer_index (vm, b0);
+      offset = fm->l2_next_record_offset_per_worker[my_cpu_number];
+    }
+
+  /* Find or allocate a frame */
+  f = fm->l2_frames_per_worker[my_cpu_number];
+  if (PREDICT_FALSE (f == 0))
+    {
+      u32 *to_next;
+      f = vlib_get_frame_to_node (vm, ip4_lookup_node.index);
+      fm->l2_frames_per_worker[my_cpu_number] = f;
+
+      /* Enqueue the buffer */
+      to_next = vlib_frame_vector_args (f);
+      to_next[0] = bi0;
+      f->n_vectors = 1;
+    }
+
+  /* Fresh packet, construct header */
+  if (PREDICT_FALSE (offset == 0))
+    {
+      flow_report_stream_t *stream;
+
+      stream = &frm->streams[0];
+
+      b0->current_data = 0;
+      b0->current_length = sizeof (*ip) + sizeof (*udp) + sizeof (*h) +
+	sizeof (*s);
+      b0->flags |= (VLIB_BUFFER_TOTAL_LENGTH_VALID | VLIB_BUFFER_FLOW_REPORT);
+      vnet_buffer (b0)->sw_if_index[VLIB_RX] = 0;
+      vnet_buffer (b0)->sw_if_index[VLIB_TX] = frm->fib_index;
+
+      tp = vlib_buffer_get_current (b0);
+      ip = (ip4_header_t *) & tp->ip4;
+      udp = (udp_header_t *) (ip + 1);
+      h = (ipfix_message_header_t *) (udp + 1);
+      s = (ipfix_set_header_t *) (h + 1);
+
+      ip->ip_version_and_header_length = 0x45;
+      ip->ttl = 254;
+      ip->protocol = IP_PROTOCOL_UDP;
+      ip->flags_and_fragment_offset = 0;
+      ip->src_address.as_u32 = frm->src_address.as_u32;
+      ip->dst_address.as_u32 = frm->ipfix_collector.as_u32;
+      udp->src_port = clib_host_to_net_u16 (UDP_DST_PORT_ipfix);
+      udp->dst_port = clib_host_to_net_u16 (UDP_DST_PORT_ipfix);
+      udp->checksum = 0;
+
+      /* FIXUP: message header export_time */
+      h->export_time = (u32)
+	(((f64) frm->unix_time_0) +
+	 (vlib_time_now (frm->vlib_main) - frm->vlib_time_0));
+      h->export_time = clib_host_to_net_u32 (h->export_time);
+      h->domain_id = clib_host_to_net_u32 (stream->domain_id);
+
+      /* FIXUP: message header sequence_number */
+      h->sequence_number = stream->sequence_number++;
+      h->sequence_number = clib_host_to_net_u32 (h->sequence_number);
+
+      offset = (u32) (((u8 *) (s + 1)) - (u8 *) tp);
+    }
+
+  /* Add data, unless we're flushing stale data */
+  if (PREDICT_TRUE (do_flush == 0))
+    {
+
+      /* Add data */
+      /* Ingress interface */
+      {
+	u32 ingress_interface = clib_host_to_net_u32 (rx_sw_if_index);
+	clib_memcpy (b0->data + offset, &ingress_interface,
+		     sizeof (ingress_interface));
+	offset += sizeof (ingress_interface);
+      }
+      /* Egress interface */
+      {
+	u32 egress_interface = clib_host_to_net_u32 (tx_sw_if_index);
+	clib_memcpy (b0->data + offset, &egress_interface,
+		     sizeof (egress_interface));
+	offset += sizeof (egress_interface);
+      }
+      /* src mac address */
+      {
+	clib_memcpy (b0->data + offset, src_mac, 6);
+	offset += 6;
+      }
+      /* dst mac address */
+      {
+	clib_memcpy (b0->data + offset, dst_mac, 6);
+	offset += 6;
+      }
+
+      /* ethertype */
+      b0->data[offset++] = ethertype >> 8;
+      b0->data[offset++] = ethertype & 0xFF;
+
+      /* Timestamp */
+      clib_memcpy (b0->data + offset, &timestamp, sizeof (f64));
+      offset += sizeof (f64);
+
+      /* pkt size */
+      {
+	u16 pkt_size = clib_host_to_net_u16 (length);
+	clib_memcpy (b0->data + offset, &pkt_size, sizeof (pkt_size));
+	offset += sizeof (pkt_size);
+      }
+
+      b0->current_length +=
+	/* 2*sw_if_index + 2*mac + ethertype + timestamp + length = 32 */
+	2 * sizeof (u32) + 12 + sizeof (u16) + sizeof (f64) + sizeof (u16);
+
+    }
+  /* Time to flush the buffer? */
+  if (PREDICT_FALSE
+      (do_flush || (offset + 2 * sizeof (u32) + 12 + sizeof (u16) +
+		    +sizeof (f64) + sizeof (u16)) > frm->path_mtu))
+    {
+      tp = vlib_buffer_get_current (b0);
+      ip = (ip4_header_t *) & tp->ip4;
+      udp = (udp_header_t *) (ip + 1);
+      h = (ipfix_message_header_t *) (udp + 1);
+      s = (ipfix_set_header_t *) (h + 1);
+
+      s->set_id_length = ipfix_set_id_length (fm->l2_report_id,
+					      b0->current_length -
+					      (sizeof (*ip) + sizeof (*udp) +
+					       sizeof (*h)));
+      h->version_length = version_length (b0->current_length -
+					  (sizeof (*ip) + sizeof (*udp)));
+
+      ip->length = clib_host_to_net_u16 (b0->current_length);
+
+      ip->checksum = ip4_header_checksum (ip);
+      udp->length = clib_host_to_net_u16 (b0->current_length - sizeof (*ip));
+
+      if (frm->udp_checksum)
+	{
+	  /* RFC 7011 section 10.3.2. */
+	  udp->checksum = ip4_tcp_udp_compute_checksum (vm, b0, ip);
+	  if (udp->checksum == 0)
+	    udp->checksum = 0xffff;
+	}
+
+      ASSERT (ip->checksum == ip4_header_checksum (ip));
+
+      if (PREDICT_FALSE (vlib_get_trace_count (vm, node) > 0))
+	{
+	  vlib_trace_buffer (vm, node, FLOWPERPKT_L2_NEXT_IP4_LOOKUP, b0,
+			     0 /* follow chain */ );
+	  flowperpkt_l2_trace_t *t =
+	    vlib_add_trace (vm, node, b0, sizeof (*t));
+	  memset (t, 0, sizeof (*t));
+	  t->rx_sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+	  t->tx_sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
+	  t->buffer_size = b0->current_length;
+	}
+
+      vlib_put_frame_to_node (vm, ip4_lookup_node.index,
+			      fm->l2_frames_per_worker[my_cpu_number]);
+      fm->l2_frames_per_worker[my_cpu_number] = 0;
+      fm->l2_buffers_per_worker[my_cpu_number] = 0;
+      offset = 0;
+    }
+
+  fm->l2_next_record_offset_per_worker[my_cpu_number] = offset;
+}
+
+void
+flowperpkt_flush_callback_l2 (void)
+{
+  vlib_main_t *vm = vlib_get_main ();
+  flowperpkt_main_t *fm = &flowperpkt_main;
+  vlib_node_runtime_t *node;
+  node = vlib_node_get_runtime (vm, flowperpkt_l2_node.index);
+
+  add_to_flow_record_l2 (vm, node, fm, 0 /* rx_sw_if_index */ ,
+			 0 /* tx_sw_if_index */ ,
+			 0 /* src mac */ ,
+			 0 /* dst mac */ ,
+			 0 /* ethertype */ ,
+			 0ULL /* timestamp */ ,
+			 0 /* length */ ,
+			 1 /* do_flush */ );
+}
+
+
+static uword
+flowperpkt_l2_node_fn (vlib_main_t * vm,
+		       vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+  u32 n_left_from, *from, *to_next;
+  flowperpkt_l2_next_t next_index;
+  flowperpkt_main_t *fm = &flowperpkt_main;
+  u64 now;
+
+  now = (u64) ((vlib_time_now (vm) - fm->vlib_time_0) * 1e9);
+  now += fm->nanosecond_time_0;
+
+  from = vlib_frame_vector_args (frame);
+  n_left_from = frame->n_vectors;
+  next_index = node->cached_next_index;
+
+  while (n_left_from > 0)
+    {
+      u32 n_left_to_next;
+
+      vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+      while (n_left_from >= 4 && n_left_to_next >= 2)
+	{
+	  u32 next0 = FLOWPERPKT_L2_NEXT_DROP;
+	  u32 next1 = FLOWPERPKT_L2_NEXT_DROP;
+	  ethernet_header_t *eh0, *eh1;
+	  u16 len0, len1;
+	  u32 bi0, bi1;
+	  vlib_buffer_t *b0, *b1;
+
+	  /* Prefetch next iteration. */
+	  {
+	    vlib_buffer_t *p2, *p3;
+
+	    p2 = vlib_get_buffer (vm, from[2]);
+	    p3 = vlib_get_buffer (vm, from[3]);
+
+	    vlib_prefetch_buffer_header (p2, LOAD);
+	    vlib_prefetch_buffer_header (p3, LOAD);
+
+	    CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, STORE);
+	    CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, STORE);
+	  }
+
+	  /* speculatively enqueue b0 and b1 to the current next frame */
+	  to_next[0] = bi0 = from[0];
+	  to_next[1] = bi1 = from[1];
+	  from += 2;
+	  to_next += 2;
+	  n_left_from -= 2;
+	  n_left_to_next -= 2;
+
+	  b0 = vlib_get_buffer (vm, bi0);
+	  b1 = vlib_get_buffer (vm, bi1);
+
+	  vnet_feature_next (vnet_buffer (b0)->sw_if_index[VLIB_TX],
+			     &next0, b0);
+	  vnet_feature_next (vnet_buffer (b1)->sw_if_index[VLIB_TX],
+			     &next1, b1);
+
+	  eh0 = vlib_buffer_get_current (b0);
+	  len0 = vlib_buffer_length_in_chain (vm, b0);
+
+	  if (PREDICT_TRUE ((b0->flags & VLIB_BUFFER_FLOW_REPORT) == 0))
+	    add_to_flow_record_l2 (vm, node, fm,
+				   vnet_buffer (b0)->sw_if_index[VLIB_RX],
+				   vnet_buffer (b0)->sw_if_index[VLIB_TX],
+				   eh0->src_address,
+				   eh0->dst_address,
+				   eh0->type, now, len0, 0 /* flush */ );
+
+	  eh1 = vlib_buffer_get_current (b0);
+	  len1 = vlib_buffer_length_in_chain (vm, b0);
+
+	  if (PREDICT_TRUE ((b1->flags & VLIB_BUFFER_FLOW_REPORT) == 0))
+	    add_to_flow_record_l2 (vm, node, fm,
+				   vnet_buffer (b1)->sw_if_index[VLIB_RX],
+				   vnet_buffer (b1)->sw_if_index[VLIB_TX],
+				   eh1->src_address,
+				   eh1->dst_address,
+				   eh1->type, now, len1, 0 /* flush */ );
+
+	  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
+	    {
+	      if (b0->flags & VLIB_BUFFER_IS_TRACED)
+		{
+		  flowperpkt_l2_trace_t *t =
+		    vlib_add_trace (vm, node, b0, sizeof (*t));
+		  t->rx_sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+		  t->tx_sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
+		  clib_memcpy (t->src_mac, eh0->src_address, 6);
+		  clib_memcpy (t->dst_mac, eh0->dst_address, 6);
+		  t->ethertype = clib_net_to_host_u16 (eh0->type);
+		  t->timestamp = now;
+		  t->buffer_size = len0;
+		}
+	      if (b1->flags & VLIB_BUFFER_IS_TRACED)
+		{
+		  flowperpkt_l2_trace_t *t =
+		    vlib_add_trace (vm, node, b1, sizeof (*t));
+		  t->rx_sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_RX];
+		  t->tx_sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_TX];
+		  clib_memcpy (t->src_mac, eh1->src_address, 6);
+		  clib_memcpy (t->dst_mac, eh1->dst_address, 6);
+		  t->ethertype = clib_net_to_host_u16 (eh1->type);
+		  t->timestamp = now;
+		  t->buffer_size = len1;
+		}
+	    }
+
+	  /* verify speculative enqueues, maybe switch current next frame */
+	  vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
+					   to_next, n_left_to_next,
+					   bi0, bi1, next0, next1);
+	}
+
+      while (n_left_from > 0 && n_left_to_next > 0)
+	{
+	  u32 bi0;
+	  vlib_buffer_t *b0;
+	  u32 next0 = FLOWPERPKT_L2_NEXT_DROP;
+	  ethernet_header_t *eh0;
+	  u16 len0;
+
+	  /* speculatively enqueue b0 to the current next frame */
+	  bi0 = from[0];
+	  to_next[0] = bi0;
+	  from += 1;
+	  to_next += 1;
+	  n_left_from -= 1;
+	  n_left_to_next -= 1;
+
+	  b0 = vlib_get_buffer (vm, bi0);
+
+	  vnet_feature_next (vnet_buffer (b0)->sw_if_index[VLIB_TX],
+			     &next0, b0);
+
+	  eh0 = vlib_buffer_get_current (b0);
+	  len0 = vlib_buffer_length_in_chain (vm, b0);
+
+	  if (PREDICT_TRUE ((b0->flags & VLIB_BUFFER_FLOW_REPORT) == 0))
+	    add_to_flow_record_l2 (vm, node, fm,
+				   vnet_buffer (b0)->sw_if_index[VLIB_RX],
+				   vnet_buffer (b0)->sw_if_index[VLIB_TX],
+				   eh0->src_address,
+				   eh0->dst_address,
+				   eh0->type, now, len0, 0 /* flush */ );
+
+	  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+			     && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+	    {
+	      flowperpkt_l2_trace_t *t =
+		vlib_add_trace (vm, node, b0, sizeof (*t));
+	      t->rx_sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+	      t->tx_sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
+	      clib_memcpy (t->src_mac, eh0->src_address, 6);
+	      clib_memcpy (t->dst_mac, eh0->dst_address, 6);
+	      t->ethertype = clib_net_to_host_u16 (eh0->type);
+	      t->timestamp = now;
+	      t->buffer_size = len0;
+	    }
+
+	  /* verify speculative enqueue, maybe switch current next frame */
+	  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+					   to_next, n_left_to_next,
+					   bi0, next0);
+	}
+
+      vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+    }
+  return frame->n_vectors;
+}
+
+/**
+ * @brief IPFIX l2 flow-per-packet graph node
+ * @node flowperpkt-l2
+ *
+ * This is the IPFIX flow-record-per-packet node.
+ *
+ * @param vm    vlib_main_t corresponding to the current thread.
+ * @param node  vlib_node_runtime_t data for this node.
+ * @param frame vlib_frame_t whose contents should be dispatched.
+ *
+ * @par Graph mechanics: buffer metadata, next index usage
+ *
+ * <em>Uses:</em>
+ * - <code>vnet_buffer(b)->ip.save_rewrite_length</code>
+ *     - tells the node the length of the rewrite which was applied in
+ *       ip4/6_rewrite_inline, allows the code to find the IP header without
+ *       having to parse L2 headers, or make stupid assumptions about their
+ *       length.
+ * - <code>vnet_buffer(b)->flags & VLIB_BUFFER_FLOW_REPORT</code>
+ *     - Used to suppress flow record generation for flow record packets.
+ *
+ * <em>Sets:</em>
+ * - <code>vnet_buffer(b)->flags & VLIB_BUFFER_FLOW_REPORT</code>
+ *     - To suppress flow record generation for flow record packets
+ *
+ * <em>Next Index:</em>
+ * - Next configured output feature on the interface, usually
+ *   "interface-output." Generated flow records head for ip4-lookup
+ */
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (flowperpkt_l2_node) = {
+  .function = flowperpkt_l2_node_fn,
+  .name = "flowperpkt-l2",
+  .vector_size = sizeof (u32),
+  .format_trace = format_flowperpkt_l2_trace,
+  .type = VLIB_NODE_TYPE_INTERNAL,
+
+  .n_errors = ARRAY_LEN(flowperpkt_l2_error_strings),
+  .error_strings = flowperpkt_l2_error_strings,
+
+  .n_next_nodes = FLOWPERPKT_L2_N_NEXT,
+
+  /* edit / add dispositions here */
+  .next_nodes = {
+    [FLOWPERPKT_L2_NEXT_DROP] = "error-drop",
+    [FLOWPERPKT_L2_NEXT_IP4_LOOKUP] = "ip4-lookup",
+  },
+};
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/src/plugins/flowperpkt/node.c b/src/plugins/flowperpkt/node.c
new file mode 100644
index 00000000000..f77f087dc78
--- /dev/null
+++ b/src/plugins/flowperpkt/node.c
@@ -0,0 +1,574 @@
+/*
+ * node.c - ipv4 ipfix-per-packet graph node
+ *
+ * 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.
+ */
+#include <vlib/vlib.h>
+#include <vnet/vnet.h>
+#include <vnet/pg/pg.h>
+#include <vppinfra/error.h>
+#include <flowperpkt/flowperpkt.h>
+
+/**
+ * @file ipv4 flow record generator graph node
+ */
+
+typedef struct
+{
+  /** interface handle */
+  u32 rx_sw_if_index;
+  u32 tx_sw_if_index;
+  u32 src_address;
+  u32 dst_address;
+  /** ToS bits */
+  u8 tos;
+  /** packet timestamp */
+  u64 timestamp;
+  /** size of the buffer */
+  u16 buffer_size;
+} flowperpkt_ipv4_trace_t;
+
+/* packet trace format function */
+static u8 *
+format_flowperpkt_ipv4_trace (u8 * s, va_list * args)
+{
+  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+  flowperpkt_ipv4_trace_t *t = va_arg (*args, flowperpkt_ipv4_trace_t *);
+
+  s = format (s,
+	      "FLOWPERPKT-V4: rx_sw_if_index %d, tx_sw_if_index %d, src %U dst %U tos %0x2, timestamp %lld, size %d",
+	      t->rx_sw_if_index, t->tx_sw_if_index,
+	      format_ip4_address, &t->src_address,
+	      format_ip4_address, &t->dst_address,
+	      t->tos, t->timestamp, t->buffer_size);
+  return s;
+}
+
+vlib_node_registration_t flowperpkt_ipv4_node;
+
+/* No counters at the moment */
+#define foreach_flowperpkt_ipv4_error
+
+typedef enum
+{
+#define _(sym,str) FLOWPERPKT_ERROR_##sym,
+  foreach_flowperpkt_ipv4_error
+#undef _
+    FLOWPERPKT_N_ERROR,
+} flowperpkt_ipv4_error_t;
+
+static char *flowperpkt_ipv4_error_strings[] = {
+#define _(sym,string) string,
+  foreach_flowperpkt_ipv4_error
+#undef _
+};
+
+typedef enum
+{
+  FLOWPERPKT_IPV4_NEXT_DROP,
+  FLOWPERPKT_IPV4_NEXT_LOOKUP,
+  FLOWPERPKT_IPV4_N_NEXT,
+} flowperpkt_ipv4_next_t;
+
+/**
+ * @brief add an entry to the flow record under construction
+ * @param vm vlib_main_t * current worker thread main structure pointer
+ * @param fm flowperpkt_main_t * flow-per-packet main structure pointer
+ * @param sw_if_index u32 interface handle
+ * @param tos u8 ToS bits from the packet
+ * @param timestamp u64 timestamp, nanoseconds since 1/1/70
+ * @param length u16 ip length of the packet
+ * @param do_flush int 1 = flush all cached records, 0 = construct a record
+ */
+
+static inline void
+add_to_flow_record_ipv4 (vlib_main_t * vm,
+			 vlib_node_runtime_t * node,
+			 flowperpkt_main_t * fm,
+			 u32 rx_sw_if_index, u32 tx_sw_if_index,
+			 u32 src_address, u32 dst_address,
+			 u8 tos, u64 timestamp, u16 length, int do_flush)
+{
+  u32 my_cpu_number = vm->cpu_index;
+  flow_report_main_t *frm = &flow_report_main;
+  ip4_header_t *ip;
+  udp_header_t *udp;
+  ip4_ipfix_template_packet_t *tp;
+  ipfix_message_header_t *h;
+  ipfix_set_header_t *s;
+  vlib_frame_t *f;
+  vlib_buffer_t *b0;
+  u16 offset;
+  u32 bi0;
+  vlib_buffer_free_list_t *fl;
+
+  /* Find or allocate a buffer */
+  b0 = fm->ipv4_buffers_per_worker[my_cpu_number];
+
+  /* Need to allocate a buffer? */
+  if (PREDICT_FALSE (b0 == 0))
+    {
+      /* Nothing to flush */
+      if (do_flush)
+	return;
+
+      /* $$$$ drop counter? */
+      if (vlib_buffer_alloc (vm, &bi0, 1) != 1)
+	return;
+
+      /* Initialize the buffer */
+      b0 = fm->ipv4_buffers_per_worker[my_cpu_number] =
+	vlib_get_buffer (vm, bi0);
+      fl =
+	vlib_buffer_get_free_list (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
+      vlib_buffer_init_for_free_list (b0, fl);
+      VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
+      offset = 0;
+    }
+  else
+    {
+      /* use the current buffer */
+      bi0 = vlib_get_buffer_index (vm, b0);
+      offset = fm->ipv4_next_record_offset_per_worker[my_cpu_number];
+    }
+
+  /* Find or allocate a frame */
+  f = fm->ipv4_frames_per_worker[my_cpu_number];
+  if (PREDICT_FALSE (f == 0))
+    {
+      u32 *to_next;
+      f = vlib_get_frame_to_node (vm, ip4_lookup_node.index);
+      fm->ipv4_frames_per_worker[my_cpu_number] = f;
+
+      /* Enqueue the buffer */
+      to_next = vlib_frame_vector_args (f);
+      to_next[0] = bi0;
+      f->n_vectors = 1;
+    }
+
+  /* Fresh packet, construct header */
+  if (PREDICT_FALSE (offset == 0))
+    {
+      flow_report_stream_t *stream;
+
+      stream = &frm->streams[0];
+
+      b0->current_data = 0;
+      b0->current_length = sizeof (*ip) + sizeof (*udp) + sizeof (*h) +
+	sizeof (*s);
+      b0->flags |= (VLIB_BUFFER_TOTAL_LENGTH_VALID | VLIB_BUFFER_FLOW_REPORT);
+      vnet_buffer (b0)->sw_if_index[VLIB_RX] = 0;
+      vnet_buffer (b0)->sw_if_index[VLIB_TX] = frm->fib_index;
+
+      tp = vlib_buffer_get_current (b0);
+      ip = (ip4_header_t *) & tp->ip4;
+      udp = (udp_header_t *) (ip + 1);
+      h = (ipfix_message_header_t *) (udp + 1);
+      s = (ipfix_set_header_t *) (h + 1);
+
+      ip->ip_version_and_header_length = 0x45;
+      ip->ttl = 254;
+      ip->protocol = IP_PROTOCOL_UDP;
+      ip->flags_and_fragment_offset = 0;
+      ip->src_address.as_u32 = frm->src_address.as_u32;
+      ip->dst_address.as_u32 = frm->ipfix_collector.as_u32;
+      udp->src_port = clib_host_to_net_u16 (UDP_DST_PORT_ipfix);
+      udp->dst_port = clib_host_to_net_u16 (UDP_DST_PORT_ipfix);
+      udp->checksum = 0;
+
+      /* FIXUP: message header export_time */
+      h->export_time = (u32)
+	(((f64) frm->unix_time_0) +
+	 (vlib_time_now (frm->vlib_main) - frm->vlib_time_0));
+      h->export_time = clib_host_to_net_u32 (h->export_time);
+      h->domain_id = clib_host_to_net_u32 (stream->domain_id);
+
+      /* FIXUP: message header sequence_number */
+      h->sequence_number = stream->sequence_number++;
+      h->sequence_number = clib_host_to_net_u32 (h->sequence_number);
+
+      offset = (u32) (((u8 *) (s + 1)) - (u8 *) tp);
+    }
+
+  /* Add data, unless we're flushing stale data */
+  if (PREDICT_TRUE (do_flush == 0))
+    {
+
+      /* Add data */
+      /* Ingress interface */
+      {
+	u32 ingress_interface = clib_host_to_net_u32 (rx_sw_if_index);
+	clib_memcpy (b0->data + offset, &ingress_interface,
+		     sizeof (ingress_interface));
+	offset += sizeof (ingress_interface);
+      }
+      /* Egress interface */
+      {
+	u32 egress_interface = clib_host_to_net_u32 (tx_sw_if_index);
+	clib_memcpy (b0->data + offset, &egress_interface,
+		     sizeof (egress_interface));
+	offset += sizeof (egress_interface);
+      }
+      /* ip4 src address */
+      {
+	clib_memcpy (b0->data + offset, &src_address, sizeof (src_address));
+	offset += sizeof (src_address);
+      }
+      /* ip4 dst address */
+      {
+	clib_memcpy (b0->data + offset, &dst_address, sizeof (dst_address));
+	offset += sizeof (dst_address);
+      }
+
+      /* ToS */
+      b0->data[offset++] = tos;
+
+      /* Timestamp */
+      clib_memcpy (b0->data + offset, &timestamp, sizeof (f64));
+      offset += sizeof (f64);
+
+      /* pkt size */
+      {
+	u16 pkt_size = clib_host_to_net_u16 (length);
+	clib_memcpy (b0->data + offset, &pkt_size, sizeof (pkt_size));
+	offset += sizeof (pkt_size);
+      }
+
+      b0->current_length +=
+	/* sw_if_index + tos + timestamp + length = 15 */
+	4 * sizeof (u32) + sizeof (u8) + sizeof (f64) + sizeof (u16);
+
+    }
+  /* Time to flush the buffer? */
+  if (PREDICT_FALSE
+      (do_flush || (offset + 4 * sizeof (u32) + sizeof (u8)
+		    + sizeof (f64) + sizeof (u16)) > frm->path_mtu))
+    {
+      tp = vlib_buffer_get_current (b0);
+      ip = (ip4_header_t *) & tp->ip4;
+      udp = (udp_header_t *) (ip + 1);
+      h = (ipfix_message_header_t *) (udp + 1);
+      s = (ipfix_set_header_t *) (h + 1);
+
+      s->set_id_length = ipfix_set_id_length (fm->ipv4_report_id,
+					      b0->current_length -
+					      (sizeof (*ip) + sizeof (*udp) +
+					       sizeof (*h)));
+      h->version_length = version_length (b0->current_length -
+					  (sizeof (*ip) + sizeof (*udp)));
+
+      ip->length = clib_host_to_net_u16 (b0->current_length);
+
+      ip->checksum = ip4_header_checksum (ip);
+      udp->length = clib_host_to_net_u16 (b0->current_length - sizeof (*ip));
+
+      if (frm->udp_checksum)
+	{
+	  /* RFC 7011 section 10.3.2. */
+	  udp->checksum = ip4_tcp_udp_compute_checksum (vm, b0, ip);
+	  if (udp->checksum == 0)
+	    udp->checksum = 0xffff;
+	}
+
+      ASSERT (ip->checksum == ip4_header_checksum (ip));
+
+      if (PREDICT_FALSE (vlib_get_trace_count (vm, node) > 0))
+	{
+	  vlib_trace_buffer (vm, node, FLOWPERPKT_IPV4_NEXT_LOOKUP, b0,
+			     0 /* follow chain */ );
+	  flowperpkt_ipv4_trace_t *t =
+	    vlib_add_trace (vm, node, b0, sizeof (*t));
+	  t->rx_sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+	  t->tx_sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
+	  t->src_address = 0;
+	  t->dst_address = 0;
+	  t->tos = 0;
+	  t->timestamp = 0;
+	  t->buffer_size = b0->current_length;
+	}
+
+      vlib_put_frame_to_node (vm, ip4_lookup_node.index,
+			      fm->ipv4_frames_per_worker[my_cpu_number]);
+      fm->ipv4_frames_per_worker[my_cpu_number] = 0;
+      fm->ipv4_buffers_per_worker[my_cpu_number] = 0;
+      offset = 0;
+    }
+
+  fm->ipv4_next_record_offset_per_worker[my_cpu_number] = offset;
+}
+
+void
+flowperpkt_flush_callback_ipv4 (void)
+{
+  vlib_main_t *vm = vlib_get_main ();
+  flowperpkt_main_t *fm = &flowperpkt_main;
+  vlib_node_runtime_t *node;
+  node = vlib_node_get_runtime (vm, flowperpkt_ipv4_node.index);
+
+  add_to_flow_record_ipv4 (vm, node, fm, 0 /* rx_sw_if_index */ ,
+			   0 /* tx_sw_if_index */ ,
+			   0 /* src_address */ ,
+			   0 /* dst_address */ ,
+			   0 /* ToS */ ,
+			   0ULL /* timestamp */ ,
+			   0 /* length */ ,
+			   1 /* do_flush */ );
+}
+
+
+static uword
+flowperpkt_ipv4_node_fn (vlib_main_t * vm,
+			 vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+  u32 n_left_from, *from, *to_next;
+  flowperpkt_ipv4_next_t next_index;
+  flowperpkt_main_t *fm = &flowperpkt_main;
+  u64 now;
+
+  now = (u64) ((vlib_time_now (vm) - fm->vlib_time_0) * 1e9);
+  now += fm->nanosecond_time_0;
+
+  from = vlib_frame_vector_args (frame);
+  n_left_from = frame->n_vectors;
+  next_index = node->cached_next_index;
+
+  while (n_left_from > 0)
+    {
+      u32 n_left_to_next;
+
+      vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+      while (n_left_from >= 4 && n_left_to_next >= 2)
+	{
+	  u32 next0 = FLOWPERPKT_IPV4_NEXT_DROP;
+	  u32 next1 = FLOWPERPKT_IPV4_NEXT_DROP;
+	  ip4_header_t *ip0, *ip1;
+	  u16 len0, len1;
+	  u32 bi0, bi1;
+	  vlib_buffer_t *b0, *b1;
+
+	  /* Prefetch next iteration. */
+	  {
+	    vlib_buffer_t *p2, *p3;
+
+	    p2 = vlib_get_buffer (vm, from[2]);
+	    p3 = vlib_get_buffer (vm, from[3]);
+
+	    vlib_prefetch_buffer_header (p2, LOAD);
+	    vlib_prefetch_buffer_header (p3, LOAD);
+
+	    CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, STORE);
+	    CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, STORE);
+	  }
+
+	  /* speculatively enqueue b0 and b1 to the current next frame */
+	  to_next[0] = bi0 = from[0];
+	  to_next[1] = bi1 = from[1];
+	  from += 2;
+	  to_next += 2;
+	  n_left_from -= 2;
+	  n_left_to_next -= 2;
+
+	  b0 = vlib_get_buffer (vm, bi0);
+	  b1 = vlib_get_buffer (vm, bi1);
+
+	  vnet_feature_next (vnet_buffer (b0)->sw_if_index[VLIB_TX],
+			     &next0, b0);
+	  vnet_feature_next (vnet_buffer (b1)->sw_if_index[VLIB_TX],
+			     &next1, b1);
+
+	  ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) +
+				  vnet_buffer (b0)->ip.save_rewrite_length);
+
+	  len0 = vlib_buffer_length_in_chain (vm, b0);
+
+	  if (PREDICT_TRUE ((b0->flags & VLIB_BUFFER_FLOW_REPORT) == 0))
+	    add_to_flow_record_ipv4 (vm, node, fm,
+				     vnet_buffer (b0)->sw_if_index[VLIB_RX],
+				     vnet_buffer (b0)->sw_if_index[VLIB_TX],
+				     ip0->src_address.as_u32,
+				     ip0->dst_address.as_u32,
+				     ip0->tos, now, len0, 0 /* flush */ );
+
+	  ip1 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b1) +
+				  vnet_buffer (b1)->ip.save_rewrite_length);
+	  len1 = vlib_buffer_length_in_chain (vm, b1);
+
+	  if (PREDICT_TRUE ((b1->flags & VLIB_BUFFER_FLOW_REPORT) == 0))
+	    add_to_flow_record_ipv4 (vm, node, fm,
+				     vnet_buffer (b1)->sw_if_index[VLIB_RX],
+				     vnet_buffer (b1)->sw_if_index[VLIB_TX],
+				     ip1->src_address.as_u32,
+				     ip1->dst_address.as_u32,
+				     ip1->tos, now, len1, 0 /* flush */ );
+
+	  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
+	    {
+	      if (b0->flags & VLIB_BUFFER_IS_TRACED)
+		{
+		  flowperpkt_ipv4_trace_t *t =
+		    vlib_add_trace (vm, node, b0, sizeof (*t));
+		  t->rx_sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+		  t->tx_sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
+		  t->src_address = ip0->src_address.as_u32;
+		  t->dst_address = ip0->dst_address.as_u32;
+		  t->tos = ip0->tos;
+		  t->timestamp = now;
+		  t->buffer_size = len0;
+		}
+	      if (b1->flags & VLIB_BUFFER_IS_TRACED)
+		{
+		  flowperpkt_ipv4_trace_t *t =
+		    vlib_add_trace (vm, node, b1, sizeof (*t));
+		  t->rx_sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_RX];
+		  t->tx_sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_TX];
+		  t->src_address = ip1->src_address.as_u32;
+		  t->dst_address = ip1->dst_address.as_u32;
+		  t->tos = ip1->tos;
+		  t->timestamp = now;
+		  t->buffer_size = len1;
+		}
+	    }
+
+	  /* verify speculative enqueues, maybe switch current next frame */
+	  vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
+					   to_next, n_left_to_next,
+					   bi0, bi1, next0, next1);
+	}
+
+      while (n_left_from > 0 && n_left_to_next > 0)
+	{
+	  u32 bi0;
+	  vlib_buffer_t *b0;
+	  u32 next0 = FLOWPERPKT_IPV4_NEXT_DROP;
+	  ip4_header_t *ip0;
+	  u16 len0;
+
+	  /* speculatively enqueue b0 to the current next frame */
+	  bi0 = from[0];
+	  to_next[0] = bi0;
+	  from += 1;
+	  to_next += 1;
+	  n_left_from -= 1;
+	  n_left_to_next -= 1;
+
+	  b0 = vlib_get_buffer (vm, bi0);
+
+	  vnet_feature_next (vnet_buffer (b0)->sw_if_index[VLIB_TX],
+			     &next0, b0);
+
+	  ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) +
+				  vnet_buffer (b0)->ip.save_rewrite_length);
+	  /*
+	   * egressInterface, TLV type 14, u32
+	   * ipClassOfService, TLV type 5, u8
+	   * flowStartNanoseconds, TLV type 156, dateTimeNanoseconds (f64)
+	   *   Implementation: f64 nanoseconds since VPP started
+	   * dataLinkFrameSize, TLV type 312, u16
+	   */
+	  len0 = vlib_buffer_length_in_chain (vm, b0);
+
+	  if (PREDICT_TRUE ((b0->flags & VLIB_BUFFER_FLOW_REPORT) == 0))
+	    add_to_flow_record_ipv4 (vm, node, fm,
+				     vnet_buffer (b0)->sw_if_index[VLIB_RX],
+				     vnet_buffer (b0)->sw_if_index[VLIB_TX],
+				     ip0->src_address.as_u32,
+				     ip0->dst_address.as_u32,
+				     ip0->tos, now, len0, 0 /* flush */ );
+
+	  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+			     && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+	    {
+	      flowperpkt_ipv4_trace_t *t =
+		vlib_add_trace (vm, node, b0, sizeof (*t));
+	      t->rx_sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+	      t->tx_sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
+	      t->src_address = ip0->src_address.as_u32;
+	      t->dst_address = ip0->dst_address.as_u32;
+	      t->tos = ip0->tos;
+	      t->timestamp = now;
+	      t->buffer_size = len0;
+	    }
+
+	  /* verify speculative enqueue, maybe switch current next frame */
+	  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+					   to_next, n_left_to_next,
+					   bi0, next0);
+	}
+
+      vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+    }
+  return frame->n_vectors;
+}
+
+/**
+ * @brief IPFIX ipv4 flow-per-packet graph node
+ * @node flowperpkt-ipv4
+ *
+ * This is the IPFIX flow-record-per-packet node.
+ *
+ * @param vm    vlib_main_t corresponding to the current thread.
+ * @param node  vlib_node_runtime_t data for this node.
+ * @param frame vlib_frame_t whose contents should be dispatched.
+ *
+ * @par Graph mechanics: buffer metadata, next index usage
+ *
+ * <em>Uses:</em>
+ * - <code>vnet_buffer(b)->ip.save_rewrite_length</code>
+ *     - tells the node the length of the rewrite which was applied in
+ *       ip4/6_rewrite_inline, allows the code to find the IP header without
+ *       having to parse L2 headers, or make stupid assumptions about their
+ *       length.
+ * - <code>vnet_buffer(b)->flags & VLIB_BUFFER_FLOW_REPORT</code>
+ *     - Used to suppress flow record generation for flow record packets.
+ *
+ * <em>Sets:</em>
+ * - <code>vnet_buffer(b)->flags & VLIB_BUFFER_FLOW_REPORT</code>
+ *     - To suppress flow record generation for flow record packets
+ *
+ * <em>Next Index:</em>
+ * - Next configured output feature on the interface, usually
+ *   "interface-output." Generated flow records head for ip4-lookup
+ */
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (flowperpkt_ipv4_node) = {
+  .function = flowperpkt_ipv4_node_fn,
+  .name = "flowperpkt-ipv4",
+  .vector_size = sizeof (u32),
+  .format_trace = format_flowperpkt_ipv4_trace,
+  .type = VLIB_NODE_TYPE_INTERNAL,
+
+  .n_errors = ARRAY_LEN(flowperpkt_ipv4_error_strings),
+  .error_strings = flowperpkt_ipv4_error_strings,
+
+  .n_next_nodes = FLOWPERPKT_IPV4_N_NEXT,
+
+  /* edit / add dispositions here */
+  .next_nodes = {
+    [FLOWPERPKT_IPV4_NEXT_DROP] = "error-drop",
+    /* Used only to trace ipfix data packets */
+    [FLOWPERPKT_IPV4_NEXT_LOOKUP] = "ip4-lookup",
+  },
+};
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */