VPP-632 : InBand OAM Analyser

Refer to jira ticket for more details.

Change-Id: I6facb9ef8553a21464f9a2e612706f152badbb68
Signed-off-by: AkshayaNadahalli <anadahal@cisco.com>

6 files changed, 1674 insertions, 0 deletions

diff --git a/src/plugins/ioam/analyse/ioam_analyse.h b/src/plugins/ioam/analyse/ioam_analyse.h
new file mode 100644
index 00000000000..a416cb1a597
--- /dev/null
+++ b/src/plugins/ioam/analyse/ioam_analyse.h
@@ -0,0 +1,398 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ * 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 PLUGINS_IOAM_PLUGIN_IOAM_ANALYSE_IOAM_ANALYSE_H_
+#define PLUGINS_IOAM_PLUGIN_IOAM_ANALYSE_IOAM_ANALYSE_H_
+
+#include <vlib/vlib.h>
+#include <vnet/vnet.h>
+#include <vppinfra/types.h>
+#include <ioam/lib-e2e/e2e_util.h>
+#include <ioam/lib-trace/trace_util.h>
+
+#define IOAM_FLOW_TEMPLATE_ID    260
+#define IOAM_TRACE_MAX_NODES      10
+#define IOAM_MAX_PATHS_PER_FLOW   10
+
+typedef struct
+{
+  u16 ingress_if;
+  u16 egress_if;
+  u32 node_id;
+} ioam_path_map_t;
+
+/** @brief Analysed iOAM trace data.
+    @note cache aligned.
+*/
+typedef struct
+{
+  /** No of nodes in path. */
+  u8 num_nodes;
+
+  /** Data contained in trace - NodeId, TTL, Ingress & Egress Link, Timestamp. */
+  u8 trace_type;
+
+  /** Flag to indicate whether node is allocated. */
+  u8 is_free;
+
+  u8 pad[5];
+
+  /** Actual PATH flow has taken. */
+  ioam_path_map_t path[IOAM_TRACE_MAX_NODES];
+
+  /** Num of pkts in the flow going over path. */
+  u32 pkt_counter;
+
+  /** Num of bytes in the flow going over path. */
+  u32 bytes_counter;
+
+  /** Minumum Dealay for the flow. */
+  u32 min_delay;
+
+  /** Maximum Dealay for the flow. */
+  u32 max_delay;
+
+  /** Average Dealay for the flow. */
+  u32 mean_delay;
+
+  u32 reserve;
+} ioam_analyse_trace_record;
+
+typedef struct
+{
+  ioam_analyse_trace_record path_data[IOAM_MAX_PATHS_PER_FLOW];
+} ioam_analyse_trace_data;
+
+/** @brief Analysed iOAM pot data.
+    @note cache aligned.
+*/
+typedef struct
+{
+  /** Number of packets validated (passes through the service chain)
+      within the timestamps. */
+  u32 sfc_validated_count;
+
+  /** Number of packets invalidated (failed through the service chain)
+      within the timestamps. */
+  u32 sfc_invalidated_count;
+} ioam_analyse_pot_data;
+
+/** @brief Analysed iOAM data.
+    @note cache aligned.
+*/
+typedef struct ioam_analyser_data_t_
+{
+  u8 is_free;
+  u8 pad[3];
+
+  /** Num of pkts sent for this flow. */
+  u32 pkt_sent;
+
+  /** Num of pkts matching this flow. */
+  u32 pkt_counter;
+
+  /** Num of bytes matching this flow. */
+  u32 bytes_counter;
+
+  /** Analysed iOAM trace data. */
+  ioam_analyse_trace_data trace_data;
+
+  /** Analysed iOAM pot data. */
+  ioam_analyse_pot_data pot_data;
+
+  /** Analysed iOAM seqno data. */
+  seqno_rx_info seqno_data;
+
+  /** Cache of previously analysed data, useful for export. */
+  struct ioam_analyser_data_t_ *chached_data_list;
+
+  /** Lock to since we use this to export the data in other thread. */
+  volatile u32 *writer_lock;
+} ioam_analyser_data_t;
+
+always_inline f64
+ip6_ioam_analyse_calc_delay (ioam_trace_hdr_t * trace, u16 trace_len)
+{
+  u16 size_of_traceopt_per_node, size_of_all_traceopts;
+  u8 num_nodes;
+  u32 *start_elt, *end_elt;
+  u32 start_time, end_time;
+
+  size_of_traceopt_per_node = fetch_trace_data_size (trace->ioam_trace_type);
+  size_of_all_traceopts = trace_len;	/*ioam_trace_type,data_list_elts_left */
+
+  num_nodes = (u8) (size_of_all_traceopts / size_of_traceopt_per_node);
+
+  num_nodes -= trace->data_list_elts_left;
+
+  start_elt = trace->elts;
+  end_elt =
+    trace->elts +
+    (size_of_traceopt_per_node * (num_nodes - 1) / sizeof (u32));
+
+  if (trace->ioam_trace_type & BIT_TTL_NODEID)
+    {
+      start_elt++;
+      end_elt++;
+    }
+  if (trace->ioam_trace_type & BIT_ING_INTERFACE)
+    {
+      start_elt++;
+      end_elt++;
+    }
+
+  start_time = clib_net_to_host_u32 (*start_elt);
+  end_time = clib_net_to_host_u32 (*end_elt);
+
+  return (f64) (end_time - start_time);
+}
+
+always_inline int
+ip6_ioam_analyse_hbh_trace (ioam_analyser_data_t * data,
+			    ioam_trace_hdr_t * trace, u16 pak_len,
+			    u16 trace_len)
+{
+  ioam_analyse_trace_data *trace_data;
+  u16 size_of_traceopt_per_node;
+  u16 size_of_all_traceopts;
+  u8 i, j, k, num_nodes, max_nodes;
+  u8 *ptr;
+  u32 nodeid;
+  u16 ingress_if, egress_if;
+  ioam_path_map_t *path = NULL;
+  ioam_analyse_trace_record *trace_record;
+
+  while (__sync_lock_test_and_set (data->writer_lock, 1))
+    ;
+
+  trace_data = &data->trace_data;
+
+  size_of_traceopt_per_node = fetch_trace_data_size (trace->ioam_trace_type);
+  size_of_all_traceopts = trace_len;
+
+  ptr = (u8 *) trace->elts;
+  max_nodes = (u8) (size_of_all_traceopts / size_of_traceopt_per_node);
+  num_nodes = max_nodes - trace->data_list_elts_left;
+
+  for (i = 0; i < IOAM_MAX_PATHS_PER_FLOW; i++)
+    {
+      trace_record = trace_data->path_data + i;
+
+      if (trace_record->is_free ||
+	  (num_nodes != trace_record->num_nodes) ||
+	  (trace->ioam_trace_type != trace_record->trace_type))
+	continue;
+
+      path = trace_record->path;
+
+      for (j = max_nodes, k = 0; k < num_nodes; j--, k++)
+	{
+	  ptr =
+	    (u8 *) ((u8 *) trace->elts +
+		    (size_of_traceopt_per_node * (j - 1)));
+
+	  nodeid = clib_net_to_host_u32 (*((u32 *) ptr)) & 0x00ffffff;
+	  ptr += 4;
+
+	  if (nodeid != path[k].node_id)
+	    break;
+
+	  if ((trace->ioam_trace_type == TRACE_TYPE_IF_TS_APP) ||
+	      (trace->ioam_trace_type == TRACE_TYPE_IF))
+	    {
+	      ingress_if = clib_net_to_host_u16 (*((u16 *) ptr));
+	      ptr += 2;
+	      egress_if = clib_net_to_host_u16 (*((u16 *) ptr));
+	      if ((ingress_if != path[k].ingress_if) ||
+		  (egress_if != path[k].egress_if))
+		{
+		  break;
+		}
+	    }
+	}
+
+      if (k == num_nodes)
+	{
+	  goto found_match;
+	}
+    }
+
+  for (i = 0; i < IOAM_MAX_PATHS_PER_FLOW; i++)
+    {
+      trace_record = trace_data->path_data + i;
+      if (trace_record->is_free)
+	{
+	  trace_record->is_free = 0;
+	  trace_record->num_nodes = num_nodes;
+	  trace_record->trace_type = trace->ioam_trace_type;
+	  path = trace_data->path_data[i].path;
+	  trace_record->pkt_counter = 0;
+	  trace_record->bytes_counter = 0;
+	  trace_record->min_delay = 0xFFFFFFFF;
+	  trace_record->max_delay = 0;
+	  trace_record->mean_delay = 0;
+	  break;
+	}
+    }
+
+  for (j = max_nodes, k = 0; k < num_nodes; j--, k++)
+    {
+      ptr =
+	(u8 *) ((u8 *) trace->elts + (size_of_traceopt_per_node * (j - 1)));
+
+      path[k].node_id = clib_net_to_host_u32 (*((u32 *) ptr)) & 0x00ffffff;
+      ptr += 4;
+
+      if ((trace->ioam_trace_type == TRACE_TYPE_IF_TS_APP) ||
+	  (trace->ioam_trace_type == TRACE_TYPE_IF))
+	{
+	  path[k].ingress_if = clib_net_to_host_u16 (*((u16 *) ptr));
+	  ptr += 2;
+	  path[k].egress_if = clib_net_to_host_u16 (*((u16 *) ptr));
+	}
+    }
+
+found_match:
+  trace_record->pkt_counter++;
+  trace_record->bytes_counter += pak_len;
+
+  if (trace->ioam_trace_type & BIT_TIMESTAMP)
+    {
+      /* Calculate time delay */
+      u32 delay = (u32) ip6_ioam_analyse_calc_delay (trace, trace_len);
+      if (delay < trace_record->min_delay)
+	trace_record->min_delay = delay;
+      else if (delay > trace_record->max_delay)
+	trace_record->max_delay = delay;
+
+      u64 sum = (trace_record->mean_delay * data->seqno_data.rx_packets);
+      trace_record->mean_delay =
+	(u32) ((sum + delay) / (data->seqno_data.rx_packets + 1));
+    }
+
+  *(data->writer_lock) = 0;
+  return 0;
+}
+
+always_inline int
+ip6_ioam_analyse_hbh_e2e (ioam_analyser_data_t * data,
+			  ioam_e2e_packet_t * e2e, u16 len)
+{
+  while (__sync_lock_test_and_set (data->writer_lock, 1))
+    ;
+
+  ioam_analyze_seqno (&data->seqno_data,
+		      (u64) clib_net_to_host_u32 (e2e->e2e_data));
+
+  *(data->writer_lock) = 0;
+  return 0;
+}
+
+always_inline u8 *
+format_path_map (u8 * s, va_list * args)
+{
+  ioam_path_map_t *pm = va_arg (*args, ioam_path_map_t *);
+  u32 num_of_elts = va_arg (*args, u32);
+  u32 i;
+
+  for (i = 0; i < num_of_elts; i++)
+    {
+      s = format (s, "node_id: 0x%x, ingress_if: 0x%x, egress_if:0x%x\n",
+		  pm->node_id, pm->ingress_if, pm->egress_if);
+      pm++;
+    }
+
+  return (s);
+}
+
+always_inline u8 *
+print_analyse_flow (u8 * s, ioam_analyser_data_t * record)
+{
+  int j;
+  ioam_analyse_trace_record *trace_record;
+
+  s = format (s, "pkt_sent : %u\n", record->pkt_sent);
+  s = format (s, "pkt_counter : %u\n", record->pkt_counter);
+  s = format (s, "bytes_counter : %u\n", record->bytes_counter);
+
+  s = format (s, "Trace data: \n");
+
+  for (j = 0; j < IOAM_MAX_PATHS_PER_FLOW; j++)
+    {
+      trace_record = record->trace_data.path_data + j;
+      if (trace_record->is_free)
+	continue;
+
+      s = format (s, "path_map:\n%U", format_path_map,
+		  trace_record->path, trace_record->num_nodes);
+      s = format (s, "pkt_counter: %u\n", trace_record->pkt_counter);
+      s = format (s, "bytes_counter: %u\n", trace_record->bytes_counter);
+
+      s = format (s, "min_delay: %u\n", trace_record->min_delay);
+      s = format (s, "max_delay: %u\n", trace_record->max_delay);
+      s = format (s, "mean_delay: %u\n", trace_record->mean_delay);
+    }
+
+  s = format (s, "\nPOT data: \n");
+  s = format (s, "sfc_validated_count : %u\n",
+	      record->pot_data.sfc_validated_count);
+  s = format (s, "sfc_invalidated_count : %u\n",
+	      record->pot_data.sfc_invalidated_count);
+
+  s = format (s, "\nSeqno Data:\n");
+  s = format (s,
+	      "RX Packets        : %lu\n"
+	      "Lost Packets      : %lu\n"
+	      "Duplicate Packets : %lu\n"
+	      "Reordered Packets : %lu\n",
+	      record->seqno_data.rx_packets,
+	      record->seqno_data.lost_packets,
+	      record->seqno_data.dup_packets,
+	      record->seqno_data.reordered_packets);
+
+  s = format (s, "\n");
+  return s;
+}
+
+always_inline void
+ioam_analyse_init_data (ioam_analyser_data_t * data)
+{
+  u16 j;
+  ioam_analyse_trace_data *trace_data;
+
+  data->is_free = 1;
+
+  /* We maintain data corresponding to last IP-Fix export, this may
+   * get extended in future to maintain history of data */
+  vec_validate_aligned (data->chached_data_list, 0, CLIB_CACHE_LINE_BYTES);
+
+  data->writer_lock = clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES,
+					      CLIB_CACHE_LINE_BYTES);
+  *(data->writer_lock) = 0;
+
+  trace_data = &(data->trace_data);
+  for (j = 0; j < IOAM_MAX_PATHS_PER_FLOW; j++)
+    trace_data->path_data[j].is_free = 1;
+}
+
+#endif /* PLUGINS_IOAM_PLUGIN_IOAM_ANALYSE_IOAM_ANALYSE_H_ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/src/plugins/ioam/analyse/ioam_summary_export.c b/src/plugins/ioam/analyse/ioam_summary_export.c
new file mode 100644
index 00000000000..0056732327c
--- /dev/null
+++ b/src/plugins/ioam/analyse/ioam_summary_export.c
@@ -0,0 +1,437 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ * 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/ip/ip6_packet.h>
+#include <ioam/analyse/ioam_summary_export.h>
+#include <ioam/analyse/ip6/ip6_ioam_analyse.h>
+
+u8 *
+ioam_template_rewrite (flow_report_main_t * frm, flow_report_t * fr,
+		       ip4_address_t * collector_address,
+		       ip4_address_t * src_address, u16 collector_port)
+{
+  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;
+  u32 field_index = 0;
+  flow_report_stream_t *stream;
+
+  stream = &frm->streams[fr->stream_index];
+
+  /* Determine field count */
+#define _(field,mask,item,length)                                   \
+    {                                                               \
+  field_count++;                                                    \
+  fr->fields_to_send = clib_bitmap_set (fr->fields_to_send,         \
+                                        field_index, 1);            \
+    }                                                               \
+    field_index++;
+
+  foreach_ioam_ipfix_field;
+#undef _
+
+  /* Add Src address, dest address, src port, dest port
+   * path map,  number of paths manually */
+  field_count += 6;
+
+  /* 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 (collector_port);
+  udp->dst_port = clib_host_to_net_u16 (UDP_DST_PORT_ipfix);
+  udp->length = clib_host_to_net_u16 (vec_len (rewrite) - sizeof (*ip));
+
+  h->domain_id = clib_host_to_net_u32 (stream->domain_id);	//fr->domain_id);
+
+  /* Add Src address, dest address, src port, dest port
+   * path map,  number of paths manually */
+  f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+				      sourceIPv6Address,
+				      sizeof (ip6_address_t));
+  f++;
+
+  f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+				      destinationIPv6Address,
+				      sizeof (ip6_address_t));
+  f++;
+
+  f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+				      sourceTransportPort, 2);
+  f++;
+
+  f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+				      destinationTransportPort, 2);
+  f++;
+
+#define _(field,mask,item,length)                               \
+    {                                                           \
+  f->e_id_length = ipfix_e_id_length (0 /* enterprise */,       \
+    item, length);                                              \
+    f++;                                                        \
+    }
+  foreach_ioam_ipfix_field;
+#undef _
+
+  f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+				      ioamNumberOfPaths, 2);
+  f++;
+
+  /* Add ioamPathMap manually */
+  f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+				      ioamPathMap, (1 * sizeof (ioam_path)));
+  f++;
+
+  /* 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 (IOAM_FLOW_TEMPLATE_ID, f - first_field);
+
+  /* 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;
+}
+
+u16
+ioam_analyse_add_ipfix_record (flow_report_t * fr,
+			       ioam_analyser_data_t * record,
+			       vlib_buffer_t * b0, u16 offset,
+			       ip6_address_t * src, ip6_address_t * dst,
+			       u16 src_port, u16 dst_port)
+{
+  while (__sync_lock_test_and_set (record->writer_lock, 1))
+    ;
+
+  int field_index = 0;
+  u16 tmp;
+  int i, j;
+  u16 num_paths = 0;
+  u16 num_paths_offset;
+
+
+  /* Add IPv6 source address manually */
+  memcpy (b0->data + offset, &src->as_u64[0], sizeof (u64));
+  offset += sizeof (u64);
+  memcpy (b0->data + offset, &src->as_u64[1], sizeof (u64));
+  offset += sizeof (u64);
+
+  /* Add IPv6 destination address manually */
+  memcpy (b0->data + offset, &dst->as_u64[0], sizeof (u64));
+  offset += sizeof (u64);
+  memcpy (b0->data + offset, &dst->as_u64[1], sizeof (u64));
+  offset += sizeof (u64);
+
+  /* Add source port manually */
+  tmp = clib_host_to_net_u16 (src_port);
+  memcpy (b0->data + offset, &tmp, sizeof (u16));
+  offset += sizeof (u16);
+
+  /* Add dest port manually */
+  tmp = clib_host_to_net_u16 (dst_port);
+  memcpy (b0->data + offset, &tmp, sizeof (u16));
+  offset += sizeof (u16);
+
+#define _(field,mask,item,length)                            \
+    if (clib_bitmap_get (fr->fields_to_send, field_index))   \
+    {                                                        \
+      /* Expect only 4 bytes */               \
+      u32 tmp;                                             \
+      tmp = clib_host_to_net_u32((u32)record->field - (u32)record->chached_data_list->field);\
+      memcpy (b0->data + offset, &tmp, length);       \
+      offset += length;                                 \
+    }
+  field_index++;
+  foreach_ioam_ipfix_field;
+#undef _
+
+  /* Store num_paths_offset here and update later */
+  num_paths_offset = offset;
+  offset += sizeof (u16);
+
+  /* Add ioamPathMap manually */
+  for (i = 0; i < IOAM_MAX_PATHS_PER_FLOW; i++)
+    {
+      ioam_analyse_trace_record *trace = record->trace_data.path_data + i;
+      ioam_analyse_trace_record *trace_cached =
+	record->chached_data_list->trace_data.path_data + i;
+      ioam_path *path = (ioam_path *) (b0->data + offset);
+
+      if (!trace->is_free)
+	{
+	  num_paths++;
+
+	  path->num_nodes = trace->num_nodes;
+
+	  path->trace_type = trace->trace_type;
+	  if (0 < (trace->pkt_counter - trace_cached->pkt_counter))
+	    {
+	      u64 new_sum = trace->mean_delay * record->seqno_data.rx_packets;
+	      u64 old_sum =
+		trace_cached->mean_delay *
+		record->chached_data_list->seqno_data.rx_packets;
+	      path->mean_delay =
+		(u32) ((new_sum - old_sum) / (trace->pkt_counter -
+					      trace_cached->pkt_counter));
+	      path->mean_delay = clib_host_to_net_u32 (path->mean_delay);
+	    }
+	  else
+	    path->mean_delay = 0;
+
+	  path->bytes_counter =
+	    trace->bytes_counter - trace_cached->bytes_counter;
+	  path->bytes_counter = clib_host_to_net_u32 (path->bytes_counter);
+
+	  path->pkt_counter = trace->pkt_counter - trace_cached->pkt_counter;
+	  path->pkt_counter = clib_host_to_net_u32 (path->pkt_counter);
+
+	  for (j = 0; j < IOAM_TRACE_MAX_NODES; j++)
+	    {
+	      path->path[j].node_id =
+		clib_host_to_net_u32 (trace->path[j].node_id);
+	      path->path[j].ingress_if =
+		clib_host_to_net_u16 (trace->path[j].ingress_if);
+	      path->path[j].egress_if =
+		clib_host_to_net_u16 (trace->path[j].egress_if);
+	    }
+
+	  offset += sizeof (ioam_path);
+	}
+    }
+
+  num_paths = clib_host_to_net_u16 (num_paths);
+  memcpy (b0->data + num_paths_offset, &num_paths, sizeof (u16));
+
+  /* Update cache */
+  *(record->chached_data_list) = *record;
+  record->chached_data_list->chached_data_list = NULL;
+
+  *(record->writer_lock) = 0;
+  return offset;
+}
+
+vlib_frame_t *
+ioam_send_flows (flow_report_main_t * frm, flow_report_t * fr,
+		 vlib_frame_t * f, u32 * to_next, u32 node_index)
+{
+  vlib_buffer_t *b0 = NULL;
+  u32 next_offset = 0;
+  u32 bi0 = ~0;
+  int i;
+  ip4_ipfix_template_packet_t *tp;
+  ipfix_message_header_t *h;
+  ipfix_set_header_t *s = NULL;
+  ip4_header_t *ip;
+  udp_header_t *udp;
+  u32 records_this_buffer;
+  u16 new_l0, old_l0;
+  ip_csum_t sum0;
+  vlib_main_t *vm = frm->vlib_main;
+  ip6_address_t temp;
+  ioam_analyser_data_t *record = NULL;
+  flow_report_stream_t *stream;
+  ioam_analyser_data_t *aggregated_data;
+  u16 data_len;
+
+  stream = &frm->streams[fr->stream_index];
+
+  memset (&temp, 0, sizeof (ip6_address_t));
+
+  aggregated_data = ioam_analyser_main.aggregated_data;
+  data_len = vec_len (aggregated_data);
+
+  vec_foreach_index (i, aggregated_data)
+  {
+    u8 flush = 0;
+    record = aggregated_data + i;
+
+    /* Flush if last entry */
+    if (i == (data_len - 1))
+      flush = 1;
+
+    if (!record->is_free)
+      {
+
+	if (PREDICT_FALSE (b0 == NULL))
+	  {
+	    if (vlib_buffer_alloc (vm, &bi0, 1) != 1)
+	      break;
+
+	    b0 = vlib_get_buffer (vm, bi0);
+	    memcpy (b0->data, fr->rewrite, vec_len (fr->rewrite));
+	    b0->current_data = 0;
+	    b0->current_length = vec_len (fr->rewrite);
+	    b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
+	    vnet_buffer (b0)->sw_if_index[VLIB_RX] = 0;
+	    vnet_buffer (b0)->sw_if_index[VLIB_TX] = ~0;
+
+	    tp = vlib_buffer_get_current (b0);
+	    ip = &tp->ip4;
+	    udp = &tp->udp;
+	    h = &tp->ipfix.h;
+	    s = &tp->ipfix.s;
+
+	    /* FIXUP: message header export_time */
+	    h->export_time = clib_host_to_net_u32 (((u32) time (NULL)));
+
+	    /* FIXUP: message header sequence_number */
+	    h->sequence_number = stream->sequence_number++;
+	    h->sequence_number = clib_host_to_net_u32 (h->sequence_number);
+	    next_offset = (u32) (((u8 *) (s + 1)) - (u8 *) tp);
+	    records_this_buffer = 0;
+	  }
+
+	next_offset = ioam_analyse_add_ipfix_record (fr, record,
+						     b0, next_offset,
+						     &temp, &temp, 0, 0);
+	records_this_buffer++;
+
+	/* Flush data if packet len is about to reach path mtu */
+	if (next_offset > (frm->path_mtu - 250))
+	  flush = 1;
+      }
+
+    if (PREDICT_FALSE (flush && b0))
+      {
+	s->set_id_length = ipfix_set_id_length (IOAM_FLOW_TEMPLATE_ID,
+						next_offset - (sizeof (*ip) +
+							       sizeof (*udp) +
+							       sizeof (*h)));
+	b0->current_length = next_offset;
+	b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
+	tp = vlib_buffer_get_current (b0);
+	ip = (ip4_header_t *) & tp->ip4;
+	udp = (udp_header_t *) (ip + 1);
+
+	sum0 = ip->checksum;
+	old_l0 = ip->length;
+	new_l0 = clib_host_to_net_u16 ((u16) next_offset);
+	sum0 = ip_csum_update (sum0, old_l0, new_l0, ip4_header_t,
+			       length /* changed member */ );
+
+	ip->checksum = ip_csum_fold (sum0);
+	ip->length = new_l0;
+	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;
+	  }
+
+	to_next[0] = bi0;
+	f->n_vectors++;
+	to_next++;
+
+	if (f->n_vectors == VLIB_FRAME_SIZE)
+	  {
+	    vlib_put_frame_to_node (vm, node_index, f);
+	    f = vlib_get_frame_to_node (vm, node_index);
+	    f->n_vectors = 0;
+	    to_next = vlib_frame_vector_args (f);
+	  }
+	b0 = 0;
+	bi0 = ~0;
+      }
+  }
+
+  return f;
+}
+
+clib_error_t *
+ioam_flow_create (u8 del)
+{
+  vnet_flow_report_add_del_args_t args;
+  int rv;
+  u32 domain_id = 0;
+  flow_report_main_t *frm = &flow_report_main;
+
+  args.rewrite_callback = ioam_template_rewrite;
+  args.flow_data_callback = ioam_send_flows;
+  del ? (args.is_add = 0) : (args.is_add = 1);
+  args.domain_id = domain_id;
+
+  rv = vnet_flow_report_add_del (frm, &args);
+
+  switch (rv)
+    {
+    case 0:
+      break;
+    case VNET_API_ERROR_NO_SUCH_ENTRY:
+      return clib_error_return (0, "registration not found...");
+    default:
+      return clib_error_return (0, "vnet_flow_report_add_del returned %d",
+				rv);
+    }
+
+  return 0;
+}
+
+clib_error_t *
+ioam_flow_report_init (vlib_main_t * vm)
+{
+  clib_error_t *error;
+
+  if ((error = vlib_call_init_function (vm, flow_report_init)))
+    return error;
+
+  return 0;
+}
+
+VLIB_INIT_FUNCTION (ioam_flow_report_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/src/plugins/ioam/analyse/ioam_summary_export.h b/src/plugins/ioam/analyse/ioam_summary_export.h
new file mode 100755
index 00000000000..9be31d2e5ed
--- /dev/null
+++ b/src/plugins/ioam/analyse/ioam_summary_export.h
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ * 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_ip6_ioam_flow_report_h__
+#define __included_ip6_ioam_flow_report_h__
+
+#include <ioam/analyse/ioam_analyse.h>
+#include <vnet/flow/flow_report.h>
+
+#define foreach_ioam_ipfix_info_element           \
+_(ioamPacketSent, 5239, u32)                     \
+_(ioamPacketCount, 5237, u32)                     \
+_(ioamByteCount, 5238, u32)                       \
+_(ioamPathMap, 5262, u32)                         \
+_(ioamNumberOfPaths, 5264, u16)                   \
+_(ioamSfcValidatedCount, 5278, u32)               \
+_(ioamSfcInValidatedCount, 5279, u32)             \
+_(ioamSeqnoRxCount, 5280, u32)                    \
+_(ioamSeqnoLostCount, 5281, u32)                  \
+_(ioamSeqnoReorderedCount, 5282, u32)             \
+_(ioamSeqnoDupCount, 5283, u32)
+
+
+typedef enum
+{
+#define _(n,v,t) n = v,
+  foreach_ioam_ipfix_info_element
+#undef _
+} ioam_ipfix_info_element_id_t;
+
+#define foreach_ioam_ipfix_field                                          \
+_(pkt_sent, 0xffffffff, ioamPacketSent, 4)                      \
+_(pkt_counter, 0xffffffff, ioamPacketCount, 4)                      \
+_(bytes_counter, 0xffffffff, ioamByteCount, 4)                      \
+_(pot_data.sfc_validated_count, 0xffffffff, ioamSfcValidatedCount, 4)     \
+_(pot_data.sfc_invalidated_count, 0xffffffff, ioamSfcInValidatedCount, 4) \
+_(seqno_data.rx_packets, 0xffffffff, ioamSeqnoRxCount, 4) \
+_(seqno_data.lost_packets, 0xffffffff, ioamSeqnoLostCount, 4) \
+_(seqno_data.reordered_packets, 0xffffffff, ioamSeqnoReorderedCount, 4) \
+_(seqno_data.dup_packets, 0xffffffff, ioamSeqnoDupCount, 4)
+
+clib_error_t *ioam_flow_report_init (vlib_main_t * vm);
+
+typedef struct
+{
+  u8 num_nodes;
+  u8 trace_type;
+  u16 reserve;
+  u32 mean_delay;
+  u32 pkt_counter;
+  u32 bytes_counter;
+  ioam_path_map_t path[IOAM_TRACE_MAX_NODES];
+} ioam_path;
+
+clib_error_t *ioam_flow_create (u8 del);
+
+u8 *ioam_template_rewrite (flow_report_main_t * frm, flow_report_t * fr,
+			   ip4_address_t * collector_address,
+			   ip4_address_t * src_address, u16 collector_port);
+
+u16 ioam_analyse_add_ipfix_record (flow_report_t * fr,
+				   ioam_analyser_data_t * record,
+				   vlib_buffer_t * b0, u16 offset,
+				   ip6_address_t * src, ip6_address_t * dst,
+				   u16 src_port, u16 dst_port);
+
+#endif /* __included_ip6_ioam_flow_report_h__ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/src/plugins/ioam/analyse/ip6/ip6_ioam_analyse.c b/src/plugins/ioam/analyse/ip6/ip6_ioam_analyse.c
new file mode 100644
index 00000000000..c22ef0f46fd
--- /dev/null
+++ b/src/plugins/ioam/analyse/ip6/ip6_ioam_analyse.c
@@ -0,0 +1,162 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ * 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 <ioam/analyse/ioam_analyse.h>
+#include <ioam/export-common/ioam_export.h>
+#include <ioam/analyse/ip6/ip6_ioam_analyse.h>
+#include <ioam/analyse/ioam_summary_export.h>
+#include <vnet/ip/ip.h>
+#include <ioam/ipfixcollector/ipfixcollector.h>
+
+static clib_error_t *
+ioam_analyse_enable_disable (vlib_main_t * vm,
+			     int is_add, int is_export, int remote_listen)
+{
+  ipfix_client_add_del_t ipfix_reg;
+  clib_error_t *rv = 0;
+
+  ipfix_reg.client_name = format (0, "ip6-hbh-analyse-remote");
+  ipfix_reg.client_node = analyse_node_remote.index;
+  ipfix_reg.ipfix_setid = IPFIX_IOAM_EXPORT_ID;
+
+  if (is_export)
+    {
+      rv = ioam_flow_create (!is_add);
+      if (rv)
+	goto ret;
+    }
+
+  if (is_add)
+    {
+      ip6_ioam_analyse_register_handlers ();
+      if (remote_listen)
+	{
+	  ipfix_reg.del = 0;
+	  ipfix_collector_reg_setid (vm, &ipfix_reg);
+	}
+      else
+	{
+	  ioam_export_set_next_node (&ioam_export_main,
+				     (u8 *) "ip6-hbh-analyse-local");
+	}
+    }
+  else
+    {
+      ip6_ioam_analyse_unregister_handlers ();
+      if (remote_listen)
+	{
+	  ipfix_reg.del = 1;
+	  ipfix_collector_reg_setid (vm, &ipfix_reg);
+	}
+      else
+	ioam_export_reset_next_node (&ioam_export_main);
+    }
+
+ret:
+  vec_free (ipfix_reg.client_name);
+  return rv;
+}
+
+static clib_error_t *
+set_ioam_analyse_command_fn (vlib_main_t * vm, unformat_input_t * input,
+			     vlib_cli_command_t * cmd)
+{
+  int is_export = 0;
+  int is_add = 1;
+  int remote_listen = 0;
+
+  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (input, "export-ipfix-collector"))
+	is_export = 1;
+      else if (unformat (input, "disable"))
+	is_add = 0;
+      else if (unformat (input, "listen-ipfix"))
+	remote_listen = 1;
+      else
+	break;
+    }
+
+  return (ioam_analyse_enable_disable (vm, is_add, is_export, remote_listen));
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (set_ioam_analyse_command, static) = {
+  .path = "set ioam analyse",
+  .short_help = "set ioam analyse [export-ipfix-collector] [disable] [listen-ipfix]",
+  .function = set_ioam_analyse_command_fn,
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+show_ioam_analyse_cmd_fn (vlib_main_t * vm, unformat_input_t * input,
+			  vlib_cli_command_t * cmd)
+{
+  ip6_ioam_analyser_main_t *am = &ioam_analyser_main;
+  ioam_analyser_data_t *record = NULL;
+  u8 i;
+  u8 *s = 0;
+
+  vec_reset_length (s);
+  s = format (0, "iOAM Analyse Information: \n");
+  vec_foreach_index (i, am->aggregated_data)
+  {
+    record = am->aggregated_data + i;
+    if (record->is_free)
+      continue;
+
+    s = format (s, "Flow Number: %u\n", i);
+    s = print_analyse_flow (s, record);
+    s = format (s, "\n");
+  }
+  vlib_cli_output (vm, "%v", s);
+
+  vec_free (s);
+
+  return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (ip6_show_ioam_ipfix_cmd, static) = {
+  .path = "show ioam analyse ",
+  .short_help = "show ioam analyser information",
+  .function = show_ioam_analyse_cmd_fn,
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+ioam_analyse_init (vlib_main_t * vm)
+{
+  ip6_ioam_analyser_main_t *am = &ioam_analyser_main;
+  u16 i;
+
+  vec_validate_aligned (am->aggregated_data, 50, CLIB_CACHE_LINE_BYTES);
+  vec_foreach_index (i, am->aggregated_data)
+  {
+    ioam_analyse_init_data (am->aggregated_data + i);
+  }
+
+  return 0;
+}
+
+VLIB_INIT_FUNCTION (ioam_analyse_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/src/plugins/ioam/analyse/ip6/ip6_ioam_analyse.h b/src/plugins/ioam/analyse/ip6/ip6_ioam_analyse.h
new file mode 100644
index 00000000000..f6abdce3c9a
--- /dev/null
+++ b/src/plugins/ioam/analyse/ip6/ip6_ioam_analyse.h
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ * 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 PLUGINS_IOAM_PLUGIN_IOAM_ANALYSE_IP6_IOAM_ANALYSE_NODE_H_
+#define PLUGINS_IOAM_PLUGIN_IOAM_ANALYSE_IP6_IOAM_ANALYSE_NODE_H_
+
+#include <ioam/analyse/ioam_analyse.h>
+#include <vnet/ip/ip6_hop_by_hop.h>
+
+/** @brief IP6-iOAM analyser main structure.
+    @note cache aligned.
+*/
+typedef struct
+{
+  /** Array of function pointer to analyse each hop-by-hop option. */
+  int (*analyse_hbh_handler[MAX_IP6_HBH_OPTION]) (u32 flow_id,
+						  ip6_hop_by_hop_option_t *
+						  opt, u16 len);
+
+  /** This contains the aggregated data from the time VPP started analysing. */
+  ioam_analyser_data_t *aggregated_data;
+
+} ip6_ioam_analyser_main_t;
+
+extern ip6_ioam_analyser_main_t ioam_analyser_main;
+
+extern vlib_node_registration_t analyse_node_local;
+extern vlib_node_registration_t analyse_node_remote;
+
+void ip6_ioam_analyse_register_handlers (void);
+
+void ip6_ioam_analyse_unregister_handlers (void);
+
+clib_error_t *ip6_ioam_analyse_init (vlib_main_t * vm);
+
+inline static ioam_analyser_data_t *
+ioam_analyse_get_data_from_flow_id (u32 flow_id)
+{
+  if (flow_id >= vec_len (ioam_analyser_main.aggregated_data))
+    return NULL;
+
+  if (ioam_analyser_main.aggregated_data[flow_id].is_free)
+    ioam_analyser_main.aggregated_data[flow_id].is_free = 0;
+
+  return (ioam_analyser_main.aggregated_data + flow_id);
+}
+
+#endif /* PLUGINS_IOAM_PLUGIN_IOAM_ANALYSE_IP6_IOAM_ANALYSE_NODE_H_ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/src/plugins/ioam/analyse/ip6/node.c b/src/plugins/ioam/analyse/ip6/node.c
new file mode 100644
index 00000000000..6db6355e9f0
--- /dev/null
+++ b/src/plugins/ioam/analyse/ip6/node.c
@@ -0,0 +1,523 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ * 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 <vppinfra/error.h>
+#include <vnet/ip/ip.h>
+#include <ioam/export-common/ioam_export.h>
+#include <ioam/encap/ip6_ioam_trace.h>
+#include <ioam/encap/ip6_ioam_pot.h>
+#include <ioam/lib-pot/pot_util.h>
+#include <ioam/encap/ip6_ioam_e2e.h>
+#include <ioam/analyse/ioam_analyse.h>
+#include <ioam/analyse/ip6/ip6_ioam_analyse.h>
+#include <vnet/plugin/plugin.h>
+
+typedef struct
+{
+  u32 next_index;
+  u32 flow_id;
+} analyse_trace_t;
+
+vlib_node_registration_t analyse_node_local;
+vlib_node_registration_t analyse_node_remote;
+
+#define foreach_analyse_error \
+_(ANALYSED, "Packets analysed for summarization") \
+_(FAILED, "Packets analysis failed") \
+
+typedef enum
+{
+#define _(sym,str) ANALYSE_ERROR_##sym,
+  foreach_analyse_error
+#undef _
+    ANALYSE_N_ERROR,
+} analyse_error_t;
+
+static char *analyse_error_strings[] = {
+#define _(sym,string) string,
+  foreach_analyse_error
+#undef _
+};
+
+typedef enum
+{
+  ANALYSE_NEXT_IP4_LOOKUP,
+  ANALYSE_NEXT_IP4_DROP,
+  ANALYSE_N_NEXT,
+} analyse_next_t;
+
+ip6_ioam_analyser_main_t ioam_analyser_main;
+
+/* packet trace format function */
+static u8 *
+format_analyse_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 *);
+  analyse_trace_t *t = va_arg (*args, analyse_trace_t *);
+
+  s = format (s, "IP6-ioam-analyse: flow_id %d, next index %d",
+	      t->flow_id, t->next_index);
+  return s;
+}
+
+always_inline u8
+ioam_analyse_hbh (u32 flow_id,
+		  ip6_hop_by_hop_header_t * hbh0,
+		  ip6_hop_by_hop_option_t * opt0,
+		  ip6_hop_by_hop_option_t * limit0, u16 len)
+{
+  ip6_ioam_analyser_main_t *am = &ioam_analyser_main;
+  u8 type0;
+  u8 error0 = 0;
+
+  while (opt0 < limit0)
+    {
+      type0 = opt0->type;
+      switch (type0)
+	{
+	case 0:		/* Pad1 */
+	  opt0 = (ip6_hop_by_hop_option_t *) ((u8 *) opt0) + 1;
+	  continue;
+	case 1:		/* PadN */
+	  break;
+	default:
+	  if (am->analyse_hbh_handler[type0])
+	    {
+	      if (PREDICT_TRUE
+		  ((*am->analyse_hbh_handler[type0]) (flow_id, opt0,
+						      len) < 0))
+		{
+		  error0 = ANALYSE_ERROR_FAILED;
+		  return (error0);
+		}
+	    }
+	}
+      opt0 =
+	(ip6_hop_by_hop_option_t *) (((u8 *) opt0) + opt0->length +
+				     sizeof (ip6_hop_by_hop_option_t));
+    }
+  return (error0);
+}
+
+/**
+ * @brief IPv6 InBandOAM Analyse node.
+ * @node ip6-hbh-analyse-local, ip6-hbh-analyse-remote
+ *
+ * This function receives IP-FIX packets containing IPv6-iOAM records, analyses
+ * them and collects/aggregates the statistics.
+ *
+ * @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, next index usage
+ *
+ * <em>Uses:</em>
+ * - <code>vlib_buffer_get_current(p0)</code>
+ *     - Walks on each ioam record present in IP-Fix record, analyse them and
+ *       store the statistics.
+ *
+ * <em>Next Index:</em>
+ * - Dispatches the packet to ip4-lookup if executed under ip6-hbh-analyse-local
+ *   node context and to ip4-drop if executed under ip6-hbh-analyse-remote node
+ *   context.
+ */
+static uword
+ip6_ioam_analyse_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
+			  vlib_frame_t * frame)
+{
+  u32 n_left_from, *from, *to_next;
+  analyse_next_t next_index;
+  u32 pkts_analysed = 0;
+  u32 pkts_failed = 0;
+  u8 remote = 0;
+  u32 next0 = ANALYSE_NEXT_IP4_LOOKUP;
+
+  from = vlib_frame_vector_args (frame);
+  n_left_from = frame->n_vectors;
+  next_index = node->cached_next_index;
+
+  if (PREDICT_FALSE (analyse_node_remote.index == node->node_index))
+    {
+      remote = 1;
+      next0 = ANALYSE_NEXT_IP4_DROP;
+    }
+
+  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 > 0 && n_left_to_next > 0)
+	{
+	  u32 bi0;
+	  vlib_buffer_t *p0;
+	  ip4_header_t *ip40;
+	  u8 *data, *limit;
+	  u16 num_ioam_records;
+
+	  /* speculatively enqueue p0 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;
+
+	  p0 = vlib_get_buffer (vm, bi0);
+	  if (PREDICT_FALSE (remote))
+	    {
+	      vlib_buffer_advance (p0, -(word) (sizeof (udp_header_t) +
+						sizeof (ip4_header_t) +
+						sizeof
+						(ipfix_message_header_t) +
+						sizeof (ipfix_set_header_t)));
+	    }
+	  data = (u8 *) vlib_buffer_get_current (p0);
+	  ip40 = (ip4_header_t *) vlib_buffer_get_current (p0);
+	  limit = data + clib_net_to_host_u16 (ip40->length);
+	  data += sizeof (ip4_header_t) + sizeof (udp_header_t)
+	    + sizeof (ipfix_message_header_t) + sizeof (ipfix_set_header_t);
+
+	  num_ioam_records = (limit - data) / DEFAULT_EXPORT_SIZE;
+
+	  while (num_ioam_records >= 4)
+	    {
+	      /* Prefetch next 2 ioam records */
+	      {
+		CLIB_PREFETCH (data + (2 * DEFAULT_EXPORT_SIZE),
+			       (DEFAULT_EXPORT_SIZE), LOAD);
+		CLIB_PREFETCH (data + (3 * DEFAULT_EXPORT_SIZE),
+			       (DEFAULT_EXPORT_SIZE), LOAD);
+	      }
+
+	      num_ioam_records -= 2;
+
+	      ip6_header_t *ip60, *ip61;
+	      ip6_hop_by_hop_header_t *hbh0, *hbh1;
+	      ip6_hop_by_hop_option_t *opt0, *limit0, *opt1, *limit1;
+	      u32 flow_id0, flow_id1;
+	      u8 error0, error1;
+	      ioam_analyser_data_t *data0, *data1;
+	      u16 p_len0, p_len1;
+
+	      ip60 = (ip6_header_t *) data;
+	      ip61 = (ip6_header_t *) (data + DEFAULT_EXPORT_SIZE);
+
+	      data += (2 * DEFAULT_EXPORT_SIZE);
+
+	      hbh0 = (ip6_hop_by_hop_header_t *) (ip60 + 1);
+	      hbh1 = (ip6_hop_by_hop_header_t *) (ip61 + 1);
+
+	      opt0 = (ip6_hop_by_hop_option_t *) (hbh0 + 1);
+	      opt1 = (ip6_hop_by_hop_option_t *) (hbh1 + 1);
+
+	      limit0 =
+		(ip6_hop_by_hop_option_t *) ((u8 *) hbh0 +
+					     ((hbh0->length + 1) << 3));
+	      limit1 =
+		(ip6_hop_by_hop_option_t *) ((u8 *) hbh1 +
+					     ((hbh1->length + 1) << 3));
+
+	      flow_id0 =
+		clib_net_to_host_u32
+		(ip60->ip_version_traffic_class_and_flow_label) & 0xFFFFF;
+	      flow_id1 =
+		clib_net_to_host_u32
+		(ip61->ip_version_traffic_class_and_flow_label) & 0xFFFFF;
+
+	      p_len0 = clib_net_to_host_u16 (ip60->payload_length);
+	      p_len1 = clib_net_to_host_u16 (ip61->payload_length);
+
+	      error0 =
+		ioam_analyse_hbh (flow_id0, hbh0, opt0, limit0, p_len0);
+	      error1 =
+		ioam_analyse_hbh (flow_id1, hbh1, opt1, limit1, p_len0);
+
+	      if (PREDICT_TRUE ((error0 == 0) && (error1 == 0)))
+		{
+		  pkts_analysed += 2;
+		  data0 = ioam_analyse_get_data_from_flow_id (flow_id0);
+		  data1 = ioam_analyse_get_data_from_flow_id (flow_id1);
+
+		  while (__sync_lock_test_and_set (data0->writer_lock, 1))
+		    ;
+		  data0->pkt_counter++;
+		  data0->bytes_counter += p_len0;
+		  *(data0->writer_lock) = 0;
+
+		  while (__sync_lock_test_and_set (data1->writer_lock, 1))
+		    ;
+		  data1->pkt_counter++;
+		  data1->bytes_counter += p_len1;
+		  *(data1->writer_lock) = 0;
+		}
+	      else if (error0 == 0)
+		{
+		  pkts_analysed++;
+		  pkts_failed++;
+
+		  data0 = ioam_analyse_get_data_from_flow_id (flow_id0);
+		  while (__sync_lock_test_and_set (data0->writer_lock, 1))
+		    ;
+		  data0->pkt_counter++;
+		  data0->bytes_counter += p_len0;
+		  *(data0->writer_lock) = 0;
+		}
+	      else if (error1 == 0)
+		{
+		  pkts_analysed++;
+		  pkts_failed++;
+
+		  data1 = ioam_analyse_get_data_from_flow_id (flow_id1);
+		  while (__sync_lock_test_and_set (data1->writer_lock, 1))
+		    ;
+		  data1->pkt_counter++;
+		  data1->bytes_counter += p_len1;
+		  *(data1->writer_lock) = 0;
+		}
+	      else
+		pkts_failed += 2;
+	    }
+
+	  while (num_ioam_records > 0)
+	    {
+	      num_ioam_records--;
+
+	      ip6_header_t *ip60;
+	      ip6_hop_by_hop_header_t *hbh0;
+	      ip6_hop_by_hop_option_t *opt0, *limit0;
+	      u32 flow_id0;
+	      u8 error0;
+	      ioam_analyser_data_t *data0;
+	      u16 p_len0;
+
+	      ip60 = (ip6_header_t *) data;
+	      data += (1 * DEFAULT_EXPORT_SIZE);
+	      hbh0 = (ip6_hop_by_hop_header_t *) (ip60 + 1);
+	      opt0 = (ip6_hop_by_hop_option_t *) (hbh0 + 1);
+	      limit0 =
+		(ip6_hop_by_hop_option_t *) ((u8 *) hbh0 +
+					     ((hbh0->length + 1) << 3));
+
+	      flow_id0 =
+		clib_net_to_host_u32
+		(ip60->ip_version_traffic_class_and_flow_label) & 0xFFFFF;
+	      p_len0 = clib_net_to_host_u16 (ip60->payload_length);
+	      error0 =
+		ioam_analyse_hbh (flow_id0, hbh0, opt0, limit0, p_len0);
+
+	      if (PREDICT_TRUE (error0 == 0))
+		{
+		  pkts_analysed++;
+		  data0 = ioam_analyse_get_data_from_flow_id (flow_id0);
+		  while (__sync_lock_test_and_set (data0->writer_lock, 1))
+		    ;
+		  data0->pkt_counter++;
+		  data0->bytes_counter +=
+		    clib_net_to_host_u16 (ip60->payload_length);
+		  *(data0->writer_lock) = 0;
+		}
+	      else
+		pkts_failed++;
+	    }
+
+	  /* 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);
+    }
+
+  vlib_node_increment_counter (vm, node->node_index, ANALYSE_ERROR_ANALYSED,
+			       pkts_analysed);
+
+  if (PREDICT_FALSE (pkts_failed))
+    vlib_node_increment_counter (vm, node->node_index, ANALYSE_ERROR_FAILED,
+				 pkts_failed);
+
+  return frame->n_vectors;
+}
+
+int
+ip6_ioam_analyse_hbh_trace_internal (u32 flow_id,
+				     ip6_hop_by_hop_option_t * opt, u16 len)
+{
+  ioam_analyser_data_t *data;
+  ioam_trace_option_t *trace = (ioam_trace_option_t *) opt;
+
+  data = ioam_analyse_get_data_from_flow_id (flow_id);
+  ASSERT (data != NULL);
+
+  (void) ip6_ioam_analyse_hbh_trace (data, &trace->trace_hdr, len,
+				     (trace->hdr.length - 2)
+				     /*ioam_trace_type,data_list_elts_left */
+    );
+  return 0;
+}
+
+int
+ip6_ioam_analyse_hbh_pot (u32 flow_id, ip6_hop_by_hop_option_t * opt0,
+			  u16 len)
+{
+
+  ioam_pot_option_t *pot0;
+  u64 random = 0;
+  u64 cumulative = 0;
+  pot_profile *pot_profile = 0;
+  int ret;
+  ioam_analyser_data_t *data;
+
+  data = ioam_analyse_get_data_from_flow_id (flow_id);
+
+  pot0 = (ioam_pot_option_t *) opt0;
+  random = clib_net_to_host_u64 (pot0->random);
+  cumulative = clib_net_to_host_u64 (pot0->cumulative);
+  pot_profile = pot_profile_get_active ();
+  ret = pot_validate (pot_profile, cumulative, random);
+
+  while (__sync_lock_test_and_set (data->writer_lock, 1))
+    ;
+
+  (0 == ret) ? (data->pot_data.sfc_validated_count++) :
+    (data->pot_data.sfc_invalidated_count++);
+
+  *(data->writer_lock) = 0;
+  return 0;
+}
+
+int
+ip6_ioam_analyse_hbh_e2e_internal (u32 flow_id, ip6_hop_by_hop_option_t * opt,
+				   u16 len)
+{
+  ioam_analyser_data_t *data;
+  ioam_e2e_option_t *e2e;
+
+  data = ioam_analyse_get_data_from_flow_id (flow_id);
+  e2e = (ioam_e2e_option_t *) opt;
+  ip6_ioam_analyse_hbh_e2e (data, &e2e->e2e_hdr, len);
+  return 0;
+}
+
+int
+ip6_ioam_analyse_register_hbh_handler (u8 option,
+				       int options (u32 flow_id,
+						    ip6_hop_by_hop_option_t *
+						    opt, u16 len))
+{
+  ip6_ioam_analyser_main_t *am = &ioam_analyser_main;
+
+  ASSERT (option < ARRAY_LEN (am->analyse_hbh_handler));
+
+  /* Already registered */
+  if (am->analyse_hbh_handler[option])
+    return (-1);
+
+  am->analyse_hbh_handler[option] = options;
+
+  return (0);
+}
+
+int
+ip6_ioam_analyse_unregister_hbh_handler (u8 option)
+{
+  ip6_ioam_analyser_main_t *am = &ioam_analyser_main;
+
+  ASSERT (option < ARRAY_LEN (am->analyse_hbh_handler));
+
+  /* Not registered */
+  if (!am->analyse_hbh_handler[option])
+    return (-1);
+
+  am->analyse_hbh_handler[option] = NULL;
+  return (0);
+}
+
+void
+ip6_ioam_analyse_register_handlers ()
+{
+  ip6_ioam_analyse_register_hbh_handler (HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST,
+					 ip6_ioam_analyse_hbh_trace_internal);
+  ip6_ioam_analyse_register_hbh_handler
+    (HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT, ip6_ioam_analyse_hbh_pot);
+  ip6_ioam_analyse_register_hbh_handler (HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE,
+					 ip6_ioam_analyse_hbh_e2e_internal);
+}
+
+void
+ip6_ioam_analyse_unregister_handlers ()
+{
+  ip6_ioam_analyse_unregister_hbh_handler
+    (HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST);
+  ip6_ioam_analyse_unregister_hbh_handler
+    (HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT);
+  ip6_ioam_analyse_unregister_hbh_handler (HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE);
+}
+
+/* *INDENT-OFF* */
+
+/*
+ * Node for IP6 analyse - packets
+ */
+VLIB_REGISTER_NODE (analyse_node_local) = {
+  .function = ip6_ioam_analyse_node_fn,
+  .name = "ip6-hbh-analyse-local",
+  .vector_size = sizeof (u32),
+  .format_trace = format_analyse_trace,
+  .type = VLIB_NODE_TYPE_INTERNAL,
+  .n_errors = ARRAY_LEN (analyse_error_strings),
+  .error_strings = analyse_error_strings,
+  .n_next_nodes = ANALYSE_N_NEXT,
+  /* edit / add dispositions here */
+  .next_nodes = {
+    [ANALYSE_NEXT_IP4_LOOKUP] = "ip4-lookup",
+    [ANALYSE_NEXT_IP4_DROP] = "ip4-drop",
+  },
+};
+
+/*
+ * Node for IP6 analyse - packets
+ */
+VLIB_REGISTER_NODE (analyse_node_remote) =
+{
+  .function = ip6_ioam_analyse_node_fn,
+  .name = "ip6-hbh-analyse-remote",
+  .vector_size = sizeof (u32),
+  .format_trace = format_analyse_trace,
+  .type = VLIB_NODE_TYPE_INTERNAL,
+  .n_errors = ARRAY_LEN (analyse_error_strings),
+  .error_strings = analyse_error_strings,
+  .n_next_nodes = ANALYSE_N_NEXT,
+  /* edit / add dispositions here */
+  .next_nodes = {
+    [ANALYSE_NEXT_IP4_LOOKUP] = "ip4-lookup",
+    [ANALYSE_NEXT_IP4_DROP] = "ip4-drop",
+  },
+};
+
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */