VPP-632 : InBand OAM Analyser

Refer to jira ticket for more details.

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

9 files changed, 128 insertions, 268 deletions

diff --git a/src/plugins/ioam/encap/ip6_ioam_e2e.c b/src/plugins/ioam/encap/ip6_ioam_e2e.c
index 2831a351d4f..cdaf740d251 100644
--- a/src/plugins/ioam/encap/ip6_ioam_e2e.c
+++ b/src/plugins/ioam/encap/ip6_ioam_e2e.c
@@ -37,7 +37,7 @@ static u8 * ioam_e2e_trace_handler (u8 * s,
 
   if (e2e)
     {
-      seqno = clib_net_to_host_u32 (e2e->e2e_data);
+      seqno = clib_net_to_host_u32 (e2e->e2e_hdr.e2e_data);
     }
 
   s = format (s, "SeqNo = 0x%Lx", seqno);
@@ -108,7 +108,7 @@ ioam_e2e_flow_handler (u32 ctx, u8 add)
     {
       pool_get(ioam_e2e_main.e2e_data, data);
       data->flow_ctx =  ctx;
-      ioam_seqno_init_bitmap(&data->seqno_data);
+      ioam_seqno_init_data(&data->seqno_data);
       return ((u32) (data - ioam_e2e_main.e2e_data));
     }
 
diff --git a/src/plugins/ioam/encap/ip6_ioam_e2e.h b/src/plugins/ioam/encap/ip6_ioam_e2e.h
index 18f35f80c60..fcec4a1447f 100644
--- a/src/plugins/ioam/encap/ip6_ioam_e2e.h
+++ b/src/plugins/ioam/encap/ip6_ioam_e2e.h
@@ -16,8 +16,16 @@
 #ifndef __included_ip6_ioam_e2e_h__
 #define __included_ip6_ioam_e2e_h__
 
+#include "../lib-e2e/e2e_util.h"
 #include "ip6_ioam_seqno.h"
 
+/* *INDENT-OFF* */
+typedef CLIB_PACKED(struct {
+  ip6_hop_by_hop_option_t hdr;
+  ioam_e2e_packet_t e2e_hdr;
+}) ioam_e2e_option_t;
+/* *INDENT-ON* */
+
 typedef struct ioam_e2e_data_t_ {
   u32 flow_ctx;
   u32 pad;
@@ -44,4 +52,13 @@ ioam_e2ec_get_seqno_data_from_flow_ctx (u32 flow_ctx)
   return &(data->seqno_data);
 }
 
+static inline u32
+ioam_e2e_get_cur_seqno_from_flow_ctx (u32 flow_ctx)
+{
+  ioam_seqno_data *data = NULL;
+
+  data =  ioam_e2ec_get_seqno_data_from_flow_ctx(flow_ctx);
+  return data->seq_num;
+}
+
 #endif /* __included_ioam_e2e_h__ */
diff --git a/src/plugins/ioam/encap/ip6_ioam_pot.c b/src/plugins/ioam/encap/ip6_ioam_pot.c
index 05f42c91d0f..9a76123330d 100644
--- a/src/plugins/ioam/encap/ip6_ioam_pot.c
+++ b/src/plugins/ioam/encap/ip6_ioam_pot.c
@@ -16,26 +16,15 @@
 #include <vnet/vnet.h>
 #include <vnet/pg/pg.h>
 #include <vppinfra/error.h>
-
 #include <vnet/ip/ip6.h>
-#include <vnet/ip/ip6_hop_by_hop.h>
-#include <vnet/ip/ip6_hop_by_hop_packet.h>
 
 #include <vppinfra/hash.h>
 #include <vppinfra/error.h>
 #include <vppinfra/elog.h>
 
+#include <ioam/encap/ip6_ioam_pot.h>
 #include <ioam/lib-pot/pot_util.h>
 
-typedef CLIB_PACKED(struct {
-  ip6_hop_by_hop_option_t hdr;
-  u8 pot_type;
-#define PROFILE_ID_MASK 0xF
-  u8 reserved_profile_id; /* 4 bits reserved, 4 bits to carry profile id */
-  u64 random;
-  u64 cumulative;
-}) ioam_pot_option_t;
-
 #define foreach_ip6_hop_by_hop_ioam_pot_stats				\
   _(PROCESSED, "Pkts with ip6 hop-by-hop pot options")			\
   _(PROFILE_MISS, "Pkts with ip6 hop-by-hop pot options but no profile set") \
@@ -180,19 +169,19 @@ ip6_hbh_ioam_proof_of_transit_pop_handler (vlib_buffer_t *b, ip6_header_t *ip,
   int rv = 0;
   pot_profile *pot_profile = 0;
   u8 result = 0;
-  
+
   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();
   result =  pot_validate (pot_profile,
 			  cumulative, random);
-	  
-  if (result == 1) 
+
+  if (result == 1)
     {
       ip6_ioam_stats_increment_counter (IP6_IOAM_POT_PASSED, 1);
     }
-  else 
+  else
     {
       ip6_ioam_stats_increment_counter (IP6_IOAM_POT_FAILED, 1);
     }
diff --git a/src/plugins/ioam/encap/ip6_ioam_pot.h b/src/plugins/ioam/encap/ip6_ioam_pot.h
new file mode 100644
index 00000000000..01ce4ac590f
--- /dev/null
+++ b/src/plugins/ioam/encap/ip6_ioam_pot.h
@@ -0,0 +1,40 @@
+/*
+ * 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_ENCAP_IP6_IOAM_POT_H_
+#define PLUGINS_IOAM_PLUGIN_IOAM_ENCAP_IP6_IOAM_POT_H_
+
+#include <vnet/ip/ip6_hop_by_hop_packet.h>
+
+/* *INDENT-OFF* */
+typedef CLIB_PACKED (struct {
+  ip6_hop_by_hop_option_t hdr;
+  u8 pot_type;
+  #define PROFILE_ID_MASK 0xF
+  u8 reserved_profile_id;	/* 4 bits reserved, 4 bits to carry profile id */
+  u64 random;
+  u64 cumulative;
+}) ioam_pot_option_t;
+/* *INDENT-ON* */
+
+#endif /* PLUGINS_IOAM_PLUGIN_IOAM_ENCAP_IP6_IOAM_POT_H_ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/src/plugins/ioam/encap/ip6_ioam_seqno.c b/src/plugins/ioam/encap/ip6_ioam_seqno.c
index 0b4d4192975..019771232b4 100644
--- a/src/plugins/ioam/encap/ip6_ioam_seqno.c
+++ b/src/plugins/ioam/encap/ip6_ioam_seqno.c
@@ -28,20 +28,6 @@
 #include "ip6_ioam_seqno.h"
 #include "ip6_ioam_e2e.h"
 
-ioam_seqno_data_main_t ioam_seqno_main;
-
-void ioam_seqno_init_bitmap (ioam_seqno_data *data)
-{
-  seqno_bitmap *bitmap = &data->seqno_rx.bitmap;
-  bitmap->window_size = SEQNO_WINDOW_SIZE;
-  bitmap->array_size = SEQNO_WINDOW_ARRAY_SIZE;
-  bitmap->mask = 32 * SEQNO_WINDOW_ARRAY_SIZE - 1;
-  bitmap->array[0] = 0x00000000;/* pretend we haven seen sequence numbers 0*/
-  bitmap->highest = 0;
-
-  data->seq_num = 0;
-  return ;
-}
 
 /*
  * This Routine gets called from IPv6 hop-by-hop option handling.
@@ -60,7 +46,7 @@ ioam_seqno_encap_handler (vlib_buffer_t *b, ip6_header_t *ip,
 
   data = ioam_e2ec_get_seqno_data_from_flow_ctx(opaque_index);
   e2e = (ioam_e2e_option_t *) opt;
-  e2e->e2e_data = clib_host_to_net_u32(++data->seq_num);
+  e2e->e2e_hdr.e2e_data = clib_host_to_net_u32(++data->seq_num);
 
   return (rv);
 }
@@ -79,31 +65,8 @@ ioam_seqno_decap_handler (vlib_buffer_t *b, ip6_header_t *ip,
 
   data = ioam_e2ec_get_seqno_data_from_flow_ctx(opaque_index);
   e2e = (ioam_e2e_option_t *) opt;
-  ioam_analyze_seqno(&data->seqno_rx, (u64) clib_net_to_host_u32(e2e->e2e_data));
+  ioam_analyze_seqno(&data->seqno_rx,
+                     (u64) clib_net_to_host_u32(e2e->e2e_hdr.e2e_data));
 
   return (rv);
 }
-
-u8 *
-show_ioam_seqno_cmd_fn (u8 *s, ioam_seqno_data *seqno_data, u8 enc)
-{
-  seqno_rx_info *rx;
-
-  s = format(s, "SeqNo Data:\n");
-  if (enc)
-    {
-      s = format(s, "  Current Seq. Number : %llu\n", seqno_data->seq_num);
-    }
-  else
-    {
-      rx = &seqno_data->seqno_rx;
-      s = format(s, "  Highest Seq. Number : %llu\n", rx->bitmap.highest);
-      s = format(s, "     Packets received : %llu\n", rx->rx_packets);
-      s = format(s, "         Lost packets : %llu\n", rx->lost_packets);
-      s = format(s, "    Reordered packets : %llu\n", rx->reordered_packets);
-      s = format(s, "    Duplicate packets : %llu\n", rx->dup_packets);
-    }
-
-  format(s, "\n");
-  return s;
-}
diff --git a/src/plugins/ioam/encap/ip6_ioam_seqno.h b/src/plugins/ioam/encap/ip6_ioam_seqno.h
index 13a84db0d71..5c140246ad2 100644
--- a/src/plugins/ioam/encap/ip6_ioam_seqno.h
+++ b/src/plugins/ioam/encap/ip6_ioam_seqno.h
@@ -18,42 +18,7 @@
 
 #include <vnet/ip/ip6_packet.h>
 #include <vnet/ip/ip6_hop_by_hop.h>
-
-#define SEQ_CHECK_VALUE 0x80000000 /* for seq number wraparound detection */
-
-#define SEQNO_WINDOW_SIZE 2048
-#define SEQNO_WINDOW_ARRAY_SIZE 64
-
-typedef struct seqno_bitmap_ {
-  u32 window_size;
-  u32 array_size;
-  u32 mask;
-  u32 pad;
-  u64 highest;
-  u64 array[SEQNO_WINDOW_ARRAY_SIZE];    /* Will be alloc to array_size */
-} seqno_bitmap;
-
-typedef struct seqno_rx_info_ {
-  u64 rx_packets;
-  u64 lost_packets;
-  u64 reordered_packets;
-  u64 dup_packets;
-  seqno_bitmap bitmap;
-} seqno_rx_info;
-
-/* This structure is 64-byte aligned */
-typedef struct ioam_seqno_data_ {
-  union {
-    u32 seq_num; /* Useful only for encap node */
-    seqno_rx_info seqno_rx;
-  };
-} ioam_seqno_data;
-
-typedef struct ioam_seqno_data_main_t_ {
-  ioam_seqno_data *seqno_data;
-} ioam_seqno_data_main_t;
-
-void ioam_seqno_init_bitmap(ioam_seqno_data *data);
+#include <ioam/lib-e2e/e2e_util.h>
 
 int ioam_seqno_encap_handler(vlib_buffer_t *b, ip6_header_t *ip,
                              ip6_hop_by_hop_option_t *opt);
@@ -62,9 +27,4 @@ int
 ioam_seqno_decap_handler(vlib_buffer_t *b, ip6_header_t *ip,
                          ip6_hop_by_hop_option_t *opt);
 
-void ioam_analyze_seqno(seqno_rx_info *ppc_rx, u64 seqno);
-
-u8 *
-show_ioam_seqno_cmd_fn(u8 *s, ioam_seqno_data *seqno_data, u8 enc);
-
 #endif
diff --git a/src/plugins/ioam/encap/ip6_ioam_seqno_analyse.c b/src/plugins/ioam/encap/ip6_ioam_seqno_analyse.c
deleted file mode 100644
index 4638871c224..00000000000
--- a/src/plugins/ioam/encap/ip6_ioam_seqno_analyse.c
+++ /dev/null
@@ -1,141 +0,0 @@
-/*
- * Copyright (c) 2016 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 <vnet/vnet.h>
-#include "ip6_ioam_seqno.h"
-
-static inline void BIT_SET (u64 *p, u32 n)
-{
-  p[ n>>5 ] |= (1 << (n&31));
-}
-
-static inline int BIT_TEST (u64 *p, u32 n)
-{
-  return p[ n>>5 ] & (1 << (n&31));
-}
-
-static void BIT_CLEAR (u64 *p, u64 start, int  num_bits, u32 mask)
-{
-  int n, t;
-  int start_index = (start >> 5);
-  int mask_index = (mask >> 5);
-
-  start_index &= mask_index;
-  if (start & 0x1f)
-    {
-      int start_bit = (start & 0x1f);
-
-      n = (1 << start_bit)-1;
-      t = start_bit + num_bits;
-      if (t < 32)
-        {
-          n |= ~((1 << t)-1);
-          p[ start_index ] &= n;
-          return;
-        }
-      p[ start_index ] &= n;
-      start_index = (start_index + 1) & mask_index;
-      num_bits -= (32 - start_bit);
-    }
-  while (num_bits >= 32)
-    {
-      p[ start_index ] = 0;
-      start_index = (start_index + 1) & mask_index;
-      num_bits -= 32;
-    }
-  n = ~((1 << num_bits) - 1);
-  p[ start_index ] &= n;
-}
-
-static inline u8 seqno_check_wraparound(u32 a, u32 b)
-{
-  if ((a != b) && (a > b) && ((a - b) > SEQ_CHECK_VALUE))
-    {
-      return 1;
-    }
-  return 0;
-}
-
-/*
- * Function to analyze the PPC value recevied.
- *     - Updates the bitmap with received sequence number
- *     - counts the received/lost/duplicate/reordered packets
- */
-void ioam_analyze_seqno (seqno_rx_info *seqno_rx, u64 seqno)
-{
-  int diff;
-  static int peer_dead_count;
-  seqno_bitmap *bitmap = &seqno_rx->bitmap;
-
-  seqno_rx->rx_packets++;
-
-  if (seqno > bitmap->highest)
-    {   /* new larger sequence number */
-      peer_dead_count = 0;
-      diff = seqno - bitmap->highest;
-      if (diff < bitmap->window_size)
-        {
-          if (diff > 1)
-            { /* diff==1 is *such* a common case it's a win to optimize it */
-              BIT_CLEAR(bitmap->array, bitmap->highest+1, diff-1, bitmap->mask);
-              seqno_rx->lost_packets += diff -1;
-            }
-        }
-      else
-        {
-          seqno_rx->lost_packets += diff -1;
-          memset( bitmap->array, 0, bitmap->array_size * sizeof(u64) );
-        }
-      BIT_SET(bitmap->array, seqno & bitmap->mask);
-      bitmap->highest = seqno;
-      return;
-    }
-
-  /* we've seen a bigger seq number before */
-  diff = bitmap->highest - seqno;
-  if (diff >= bitmap->window_size)
-    {
-      if (seqno_check_wraparound(bitmap->highest, seqno))
-        {
-          memset( bitmap->array, 0, bitmap->array_size * sizeof(u64));
-          BIT_SET(bitmap->array, seqno & bitmap->mask);
-          bitmap->highest = seqno;
-          return;
-        }
-      else
-        {
-          peer_dead_count++;
-          if (peer_dead_count > 25)
-            {
-              peer_dead_count = 0;
-              memset( bitmap->array, 0, bitmap->array_size * sizeof(u64) );
-              BIT_SET(bitmap->array, seqno & bitmap->mask);
-              bitmap->highest = seqno;
-            }
-          //ppc_rx->reordered_packets++;
-        }
-      return;
-    }
-
-  if (BIT_TEST(bitmap->array, seqno & bitmap->mask))
-    {
-      seqno_rx->dup_packets++;
-      return;    /* Already seen */
-    }
-  seqno_rx->reordered_packets++;
-  seqno_rx->lost_packets--;
-  BIT_SET(bitmap->array, seqno & bitmap->mask);
-  return;
-}
diff --git a/src/plugins/ioam/encap/ip6_ioam_trace.c b/src/plugins/ioam/encap/ip6_ioam_trace.c
index a836dfe817b..6972ba4be96 100644
--- a/src/plugins/ioam/encap/ip6_ioam_trace.c
+++ b/src/plugins/ioam/encap/ip6_ioam_trace.c
@@ -27,7 +27,7 @@
 #include <vppinfra/elog.h>
 #include <vnet/plugin/plugin.h>
 
-#include <ioam/lib-trace/trace_util.h>
+#include <ioam/encap/ip6_ioam_trace.h>
 
 /* Timestamp precision multipliers for seconds, milliseconds, microseconds
  * and nanoseconds respectively.
@@ -40,15 +40,6 @@ typedef union
   u32 as_u32[2];
 } time_u64_t;
 
-/* *INDENT-OFF* */
-typedef CLIB_PACKED(struct {
-  ip6_hop_by_hop_option_t hdr;
-  u8 ioam_trace_type;
-  u8 data_list_elts_left;
-  u32 elts[0]; /* Variable type. So keep it generic */
-}) ioam_trace_option_t;
-/* *INDENT-ON* */
-
 
 extern ip6_hop_by_hop_ioam_main_t ip6_hop_by_hop_ioam_main;
 extern ip6_main_t ip6_main;
@@ -201,8 +192,9 @@ ip6_hop_by_hop_ioam_trace_rewrite_handler (u8 * rewrite_string,
     HBH_OPTION_TYPE_DATA_CHANGE_ENROUTE;
   trace_option->hdr.length = 2 /*ioam_trace_type,data_list_elts_left */  +
     trace_option_elts * trace_data_size;
-  trace_option->ioam_trace_type = profile->trace_type & TRACE_TYPE_MASK;
-  trace_option->data_list_elts_left = trace_option_elts;
+  trace_option->trace_hdr.ioam_trace_type =
+    profile->trace_type & TRACE_TYPE_MASK;
+  trace_option->trace_hdr.data_list_elts_left = trace_option_elts;
   *rewrite_size =
     sizeof (ioam_trace_option_t) + (trace_option_elts * trace_data_size);
 
@@ -238,24 +230,24 @@ ip6_hbh_ioam_trace_data_list_handler (vlib_buffer_t * b, ip6_header_t * ip,
 
   time_u64.as_u64 = 0;
 
-  if (PREDICT_TRUE (trace->data_list_elts_left))
+  if (PREDICT_TRUE (trace->trace_hdr.data_list_elts_left))
     {
-      trace->data_list_elts_left--;
+      trace->trace_hdr.data_list_elts_left--;
       /* fetch_trace_data_size returns in bytes. Convert it to 4-bytes
        * to skip to this node's location.
        */
       elt_index =
-	trace->data_list_elts_left *
-	fetch_trace_data_size (trace->ioam_trace_type) / 4;
-      elt = &trace->elts[elt_index];
-      if (trace->ioam_trace_type & BIT_TTL_NODEID)
+	trace->trace_hdr.data_list_elts_left *
+	fetch_trace_data_size (trace->trace_hdr.ioam_trace_type) / 4;
+      elt = &trace->trace_hdr.elts[elt_index];
+      if (trace->trace_hdr.ioam_trace_type & BIT_TTL_NODEID)
 	{
 	  *elt =
 	    clib_host_to_net_u32 ((ip->hop_limit << 24) | profile->node_id);
 	  elt++;
 	}
 
-      if (trace->ioam_trace_type & BIT_ING_INTERFACE)
+      if (trace->trace_hdr.ioam_trace_type & BIT_ING_INTERFACE)
 	{
 	  *elt =
 	    (vnet_buffer (b)->sw_if_index[VLIB_RX] & 0xFFFF) << 16 |
@@ -264,7 +256,7 @@ ip6_hbh_ioam_trace_data_list_handler (vlib_buffer_t * b, ip6_header_t * ip,
 	  elt++;
 	}
 
-      if (trace->ioam_trace_type & BIT_TIMESTAMP)
+      if (trace->trace_hdr.ioam_trace_type & BIT_TIMESTAMP)
 	{
 	  /* Send least significant 32 bits */
 	  f64 time_f64 =
@@ -276,7 +268,7 @@ ip6_hbh_ioam_trace_data_list_handler (vlib_buffer_t * b, ip6_header_t * ip,
 	  elt++;
 	}
 
-      if (trace->ioam_trace_type & BIT_APPDATA)
+      if (trace->trace_hdr.ioam_trace_type & BIT_APPDATA)
 	{
 	  /* $$$ set elt0->app_data */
 	  *elt = clib_host_to_net_u32 (profile->app_data);
@@ -302,17 +294,19 @@ ip6_hbh_ioam_trace_data_list_trace_handler (u8 * s,
 
   trace = (ioam_trace_option_t *) opt;
   s =
-    format (s, "  Trace Type 0x%x , %d elts left\n", trace->ioam_trace_type,
-	    trace->data_list_elts_left);
+    format (s, "  Trace Type 0x%x , %d elts left\n",
+	    trace->trace_hdr.ioam_trace_type,
+	    trace->trace_hdr.data_list_elts_left);
   trace_data_size_in_words =
-    fetch_trace_data_size (trace->ioam_trace_type) / 4;
-  elt = &trace->elts[0];
-  while ((u8 *) elt < ((u8 *) (&trace->elts[0]) + trace->hdr.length - 2
-		       /* -2 accounts for ioam_trace_type,elts_left */ ))
+    fetch_trace_data_size (trace->trace_hdr.ioam_trace_type) / 4;
+  elt = &trace->trace_hdr.elts[0];
+  while ((u8 *) elt <
+	 ((u8 *) (&trace->trace_hdr.elts[0]) + trace->hdr.length - 2
+	  /* -2 accounts for ioam_trace_type,elts_left */ ))
     {
       s = format (s, "    [%d] %U\n", elt_index,
 		  format_ioam_data_list_element,
-		  elt, &trace->ioam_trace_type);
+		  elt, &trace->trace_hdr.ioam_trace_type);
       elt_index++;
       elt += trace_data_size_in_words;
     }
diff --git a/src/plugins/ioam/encap/ip6_ioam_trace.h b/src/plugins/ioam/encap/ip6_ioam_trace.h
new file mode 100644
index 00000000000..b332b3197e9
--- /dev/null
+++ b/src/plugins/ioam/encap/ip6_ioam_trace.h
@@ -0,0 +1,38 @@
+/*
+ * 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_ENCAP_IP6_IOAM_TRACE_H_
+#define PLUGINS_IOAM_PLUGIN_IOAM_ENCAP_IP6_IOAM_TRACE_H_
+
+#include <vnet/ip/ip6_hop_by_hop_packet.h>
+#include <ioam/lib-trace/trace_util.h>
+
+/* *INDENT-OFF* */
+typedef CLIB_PACKED(struct {
+  ip6_hop_by_hop_option_t hdr;
+  ioam_trace_hdr_t trace_hdr;
+}) ioam_trace_option_t;
+/* *INDENT-ON* */
+
+
+#endif /* PLUGINS_IOAM_PLUGIN_IOAM_ENCAP_IP6_IOAM_TRACE_H_ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */