[HICN-574] Host stack plugin for VPP.

Signed-off-by: Mauro Sardara <msardara@cisco.com>
Change-Id: I8d8fdffef31a7013265d6529c5f52f3d5ec70d18
Signed-off-by: Mauro Sardara <msardara@cisco.com>
Signed-off-by: Mauro <you@example.com>
Signed-off-by: Mauro Sardara <msardara@cisco.com>

1 files changed, 0 insertions, 620 deletions

diff --git a/hicn-plugin/src/data_fwd_node.c b/hicn-plugin/src/data_fwd_node.c
deleted file mode 100644
index c65b62454..000000000
--- a/hicn-plugin/src/data_fwd_node.c
+++ /dev/null
@@ -1,620 +0,0 @@
-/*
- * Copyright (c) 2017-2020 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/dpo/dpo.h>
-
-#include "data_fwd.h"
-#include "mgmt.h"
-#include "parser.h"
-#include "infra.h"
-#include "strategy.h"
-#include "strategy_dpo_manager.h"
-#include "state.h"
-#include "error.h"
-
-/* Stats string values */
-static char *hicn_data_fwd_error_strings[] = {
-#define _(sym, string) string,
-  foreach_hicnfwd_error
-#undef _
-};
-
-/* Declarations */
-always_inline void
-drop_packet (vlib_main_t * vm, u32 bi0,
-	     u32 * n_left_to_next, u32 * next0, u32 ** to_next,
-	     u32 * next_index, vlib_node_runtime_t * node);
-
-always_inline int
-hicn_satisfy_faces (vlib_main_t * vm, u32 b0,
-		    hicn_pcs_entry_t * pitp, u32 * n_left_to_next,
-		    u32 ** to_next, u32 * next_index,
-		    vlib_node_runtime_t * node, u8 isv6,
-		    vl_api_hicn_api_node_stats_get_reply_t * stats);
-
-always_inline void
-clone_data_to_cs (vlib_main_t * vm, hicn_pit_cs_t * pitcs,
-		  hicn_pcs_entry_t * pitp, hicn_header_t * hicn0, f64 tnow,
-		  hicn_hash_node_t * nodep, vlib_buffer_t * b0,
-		  hicn_hash_entry_t * hash_entry, u64 name_hash,
-		  hicn_buffer_t * hicnb, const hicn_dpo_vft_t * dpo_vft,
-		  dpo_id_t * hicn_dpo_id, hicn_lifetime_t dmsg_lifetime);
-
-
-/* packet trace format function */
-always_inline u8 *hicn_data_fwd_format_trace (u8 * s, va_list * args);
-
-vlib_node_registration_t hicn_data_fwd_node;
-
-/*
- * ICN forwarder node for interests: handling of Data delivered based on ACL.
- * - 1 packet at a time - ipv4/tcp ipv6/tcp
- */
-static uword
-hicn_data_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
-		   vlib_frame_t * frame)
-{
-
-  u32 n_left_from, *from, *to_next;
-  hicn_data_fwd_next_t next_index;
-  hicn_pit_cs_t *pitcs = &hicn_main.pitcs;
-  vl_api_hicn_api_node_stats_get_reply_t stats = { 0 };
-  f64 tnow;
-  u32 data_received = 1;
-
-  from = vlib_frame_vector_args (frame);
-  n_left_from = frame->n_vectors;
-  next_index = node->cached_next_index;
-
-  /* Capture time in vpp terms */
-  tnow = vlib_time_now (vm);
-
-  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)
-	{
-	  vlib_buffer_t *b0;
-	  u8 isv6;
-	  u8 *nameptr;
-	  u16 namelen;
-	  u32 bi0;
-	  u32 next0 = HICN_DATA_FWD_NEXT_ERROR_DROP;
-	  hicn_name_t name;
-	  hicn_header_t *hicn0;
-	  hicn_buffer_t *hicnb0;
-	  hicn_hash_node_t *node0;
-	  const hicn_strategy_vft_t *strategy_vft0;
-	  const hicn_dpo_vft_t *dpo_vft0;
-	  u8 dpo_ctx_id0;
-	  hicn_pcs_entry_t *pitp;
-	  hicn_hash_entry_t *hash_entry0;
-	  int ret = HICN_ERROR_NONE;
-
-	  /* Prefetch for next iteration. */
-	  if (n_left_from > 1)
-	    {
-	      vlib_buffer_t *b1;
-	      b1 = vlib_get_buffer (vm, from[1]);
-	      CLIB_PREFETCH (b1, 2 * CLIB_CACHE_LINE_BYTES, STORE);
-	      CLIB_PREFETCH (b1->data, CLIB_CACHE_LINE_BYTES, STORE);
-	    }
-	  /* Dequeue a packet buffer */
-	  /*
-	   * Do not copy the index in the next buffer, we'll do
-	   * it later. The packet might be cloned, so the buffer to move
-	   * to next must be the cloned one
-	   */
-	  bi0 = from[0];
-	  from += 1;
-	  n_left_from -= 1;
-
-	  b0 = vlib_get_buffer (vm, bi0);
-
-	  /* Get hicn buffer and state */
-	  hicnb0 = hicn_get_buffer (b0);
-	  hicn_get_internal_state (hicnb0, pitcs, &node0, &strategy_vft0,
-				   &dpo_vft0, &dpo_ctx_id0, &hash_entry0);
-
-	  ret = hicn_data_parse_pkt (b0, &name, &namelen, &hicn0, &isv6);
-	  pitp = hicn_pit_get_data (node0);
-	  nameptr = (u8 *) (&name);
-
-	  if (PREDICT_FALSE
-	      (ret != HICN_ERROR_NONE
-	       || !hicn_node_compare (nameptr, namelen, node0)
-	       || (hash_entry0->he_flags & HICN_HASH_ENTRY_FLAG_CS_ENTRY)))
-	    {
-	      /*
-	       * Remove the lock acquired from
-	       * data_pcslookup node
-	       */
-	      dpo_id_t hicn_dpo_id0 = { dpo_vft0->hicn_dpo_get_type (), 0, 0,
-		dpo_ctx_id0
-	      };
-	      hicn_pcs_remove_lock (pitcs, &pitp, &node0, vm,
-				    hash_entry0, dpo_vft0, &hicn_dpo_id0);
-
-	      drop_packet (vm, bi0, &n_left_to_next, &next0, &to_next,
-			   &next_index, node);
-
-	      goto end_processing;
-	    }
-	  /*
-	   * Check if the hit is instead a collision in the
-	   * hash table. Unlikely to happen.
-	   */
-	  /*
-	   * there is no guarantee that the type of entry has
-	   * not changed from the lookup.
-	   */
-
-	  if (tnow > pitp->shared.expire_time
-	      || (hash_entry0->he_flags & HICN_HASH_ENTRY_FLAG_DELETED))
-	    {
-	      dpo_id_t hicn_dpo_id0 =
-		{ dpo_vft0->hicn_dpo_get_type (), 0, 0, dpo_ctx_id0 };
-	      hicn_pcs_delete (pitcs, &pitp, &node0, vm, hash_entry0,
-			       dpo_vft0, &hicn_dpo_id0);
-
-              drop_packet (vm, bi0, &n_left_to_next, &next0, &to_next,
-                           &next_index, node);
-	      stats.pit_expired_count++;
-
-	      if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) &&
-				 (b0->flags & VLIB_BUFFER_IS_TRACED)))
-		{
-		  hicn_data_fwd_trace_t *t =
-		    vlib_add_trace (vm, node, b0, sizeof (*t));
-		  t->pkt_type = HICN_PKT_TYPE_CONTENT;
-		  t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
-		  t->next_index = next0;
-		  clib_memcpy (t->packet_data,
-			       vlib_buffer_get_current (b0),
-			       sizeof (t->packet_data));
-		}
-	    }
-	  else
-	    {
-	      ASSERT ((hash_entry0->he_flags & HICN_HASH_ENTRY_FLAG_DELETED)
-		      == 0);
-
-	      data_received++;
-	      /*
-	       * We do not check if the data is coming from
-	       * the outgoing interest face.
-	       */
-
-	      /* Prepare the buffer for the cloning */
-	      ret = hicn_satisfy_faces (vm, bi0, pitp, &n_left_to_next,
-					&to_next, &next_index, node,
-					isv6, &stats);
-
-	      dpo_id_t hicn_dpo_id0 = { dpo_vft0->hicn_dpo_get_type (), 0, 0,
-		dpo_ctx_id0
-	      };
-
-	      if (PREDICT_FALSE (ret != HICN_ERROR_NONE))
-		{
-		  hicn_pcs_pit_delete (pitcs, &pitp, &node0, vm,
-				       hash_entry0, dpo_vft0, &hicn_dpo_id0);
-		  continue;
-		}
-	      /*
-	       * Call the strategy callback since the
-	       * interest has been satisfied
-	       */
-	      strategy_vft0->hicn_receive_data (dpo_ctx_id0,
-						pitp->u.pit.pe_txnh);
-
-#if HICN_FEATURE_CS
-	      hicn_lifetime_t dmsg_lifetime;
-
-	      hicn_type_t type = hicnb0->type;
-	      hicn_ops_vft[type.l1]->get_lifetime (type, &hicn0->protocol,
-						   &dmsg_lifetime);
-
-	      if (dmsg_lifetime)
-		{
-		  /*
-		   * Clone data packet in the content store and
-		   * convert the PIT entry into a CS entry
-		   */
-		  clone_data_to_cs (vm, pitcs, pitp, hicn0, tnow, node0,
-				    b0, hash_entry0, hicnb0->name_hash,
-				    hicnb0, dpo_vft0, &hicn_dpo_id0,
-				    dmsg_lifetime);
-
-		  hicn_pcs_remove_lock (pitcs, &pitp, &node0, vm,
-					hash_entry0, NULL, NULL);
-		}
-	      else
-		{
-		  /*
-		   * If the packet is copied and not cloned, we need to free the vlib_buffer
-		   */
-		  if (hicnb0->flags & HICN_BUFFER_FLAGS_PKT_LESS_TWO_CL)
-		    {
-		      vlib_buffer_free_one (vm, bi0);
-		    }
-		  else
-		    {
-		      /*
-		       * Remove one reference as the buffer is no
-		       * longer in any frame. The vlib_buffer will be freed when
-		       * all its cloned vlib_buffer will be freed.
-		       */
-		      b0->ref_count--;
-		    }
-
-		  /* Delete the PIT entry */
-		  hicn_pcs_pit_delete (pitcs, &pitp, &node0, vm,
-				       hash_entry0, dpo_vft0, &hicn_dpo_id0);
-		}
-#else
-	      ASSERT (pitp == hicn_pit_get_data (node0));
-	      /*
-	       * If the packet is copied and not cloned, we need to free the vlib_buffer
-	       */
-	      if (hicnb0->flags & HICN_BUFFER_FLAGS_PKT_LESS_TWO_CL)
-		{
-		  vlib_buffer_free_one (vm, bi0);
-		}
-	      else
-		{
-		  /*
-		   * Remove one reference as the buffer is no
-		   * longer in any frame. The vlib_buffer will be freed when
-		   * all its cloned vlib_buffer will be freed.
-		   */
-		  b0->ref_count--;
-		}
-
-	      /* Delete the PIT entry */
-	      hicn_pcs_pit_delete (pitcs, &pitp, &node0, vm,
-				   hash_entry0, dpo_vft0, &hicn_dpo_id0);
-#endif
-	    }
-	end_processing:
-
-	  /* Incr packet counter */
-	  stats.pkts_processed += 1;
-	}
-
-      vlib_put_next_frame (vm, node, next_index, n_left_to_next);
-    }
-  u32 pit_int_count = hicn_pit_get_int_count (pitcs);
-  u32 pit_cs_count = hicn_pit_get_cs_count (pitcs);
-
-  vlib_node_increment_counter (vm, hicn_data_fwd_node.index,
-			       HICNFWD_ERROR_DATAS, stats.pkts_data_count);
-
-
-  update_node_counter (vm, hicn_data_fwd_node.index,
-		       HICNFWD_ERROR_INT_COUNT, pit_int_count);
-  update_node_counter (vm, hicn_data_fwd_node.index,
-		       HICNFWD_ERROR_CS_COUNT, pit_cs_count);
-  update_node_counter (vm, hicn_data_fwd_node.index,
-		       HICNFWD_ERROR_INTEREST_AGG_ENTRY,
-		       stats.pkts_data_count / data_received);
-
-  return (frame->n_vectors);
-}
-
-always_inline void
-drop_packet (vlib_main_t * vm, u32 bi0,
-	     u32 * n_left_to_next, u32 * next0, u32 ** to_next,
-	     u32 * next_index, vlib_node_runtime_t * node)
-{
-  *next0 = HICN_DATA_FWD_NEXT_ERROR_DROP;
-
-  (*to_next)[0] = bi0;
-  *to_next += 1;
-  *n_left_to_next -= 1;
-
-  vlib_validate_buffer_enqueue_x1 (vm, node, *next_index,
-				   *to_next, *n_left_to_next, bi0, *next0);
-}
-
-always_inline int
-hicn_satisfy_faces (vlib_main_t * vm, u32 bi0,
-		    hicn_pcs_entry_t * pitp, u32 * n_left_to_next,
-		    u32 ** to_next, u32 * next_index,
-		    vlib_node_runtime_t * node, u8 isv6,
-		    vl_api_hicn_api_node_stats_get_reply_t * stats)
-{
-  int found = 0;
-  int ret = HICN_ERROR_NONE;
-  u32 *clones = NULL, *header = NULL;
-  u32 n_left_from = 0;
-  u32 next0 = HICN_DATA_FWD_NEXT_ERROR_DROP, next1 =
-    HICN_DATA_FWD_NEXT_ERROR_DROP;
-  word buffer_advance = CLIB_CACHE_LINE_BYTES * 2;
-
-  /*
-   * We have a hard limit on the number of vlib_buffer that we can
-   * chain (no more than 256)
-   */
-  /*
-   * The first group of vlib_buffer can be directly cloned from b0. We
-   * need to be careful to clone it only 254 times as the buffer
-   * already has n_add_reds=1.
-   */
-  vec_alloc (clones, pitp->u.pit.faces.n_faces);
-  header = clones;
-
-  /* Clone bi0 */
-  vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0);
-
-  hicn_buffer_t *hicnb = hicn_get_buffer (b0);
-
-  /*
-   * Mark the buffer as smaller than TWO_CL. It will be stored as is in the CS, without excluding
-   * the hicn_header. Cloning is not possible, it will be copied.
-   */
-  if (b0->current_length <= (buffer_advance + (CLIB_CACHE_LINE_BYTES * 2)))
-    {
-      /* In this case the packet is copied. We don't need to add a reference as no buffer are
-       * chained to it.
-       */
-      hicnb->flags |= HICN_BUFFER_FLAGS_PKT_LESS_TWO_CL;
-    }
-  else
-    {
-      /* Add one reference to maintain the buffer in the CS.
-       * b0->ref_count == 0 has two meaning: it has 1 buffer or no buffer chained to it.
-       * vlib_buffer_clone2 add a number of reference equalt to pitp->u.pit.faces.n_faces - 1
-       * as vlib_buffer_clone does. So after all the packet are forwarded the buffer stored in
-       * the CS will have ref_count == 0;
-       */
-      b0->ref_count++;
-    }
-
-  found = n_left_from =
-    vlib_buffer_clone2 (vm, bi0, clones, pitp->u.pit.faces.n_faces,
-			buffer_advance);
-
-  ASSERT (n_left_from == pitp->u.pit.faces.n_faces);
-
-  /* Index to iterate over the faces */
-  int i = 0;
-
-  while (n_left_from > 0)
-    {
-
-      //Dual loop, X2
-      while (n_left_from >= 4 && *n_left_to_next >= 2)
-	{
-	  vlib_buffer_t *h0, *h1;
-	  u32 hi0, hi1;
-	  hicn_face_id_t face0, face1;
-
-	  /* Prefetch for next iteration. */
-	  {
-	    vlib_buffer_t *h2, *h3;
-	    h2 = vlib_get_buffer (vm, clones[2]);
-	    h3 = vlib_get_buffer (vm, clones[3]);
-	    CLIB_PREFETCH (h2, 2 * CLIB_CACHE_LINE_BYTES, STORE);
-	    CLIB_PREFETCH (h3, 2 * CLIB_CACHE_LINE_BYTES, STORE);
-	  }
-
-	  face0 = hicn_face_db_get_dpo_face (i++, &pitp->u.pit.faces);
-	  face1 = hicn_face_db_get_dpo_face (i++, &pitp->u.pit.faces);
-
-	  h0 = vlib_get_buffer (vm, clones[0]);
-	  h1 = vlib_get_buffer (vm, clones[1]);
-
-	  (*to_next)[0] = hi0 = clones[0];
-	  (*to_next)[1] = hi1 = clones[1];
-	  *to_next += 2;
-	  *n_left_to_next -= 2;
-	  n_left_from -= 2;
-	  clones += 2;
-
-	  next0 = isv6 ? HICN_DATA_FWD_NEXT_IFACE6_OUT :
-            HICN_DATA_FWD_NEXT_IFACE4_OUT;
-	  next1 = isv6 ? HICN_DATA_FWD_NEXT_IFACE6_OUT :
-            HICN_DATA_FWD_NEXT_IFACE4_OUT;
-
-          vnet_buffer (h0)->ip.adj_index[VLIB_TX] = face0;
-	  vnet_buffer (h1)->ip.adj_index[VLIB_TX] = face1;
-
-	  stats->pkts_data_count += 2;
-
-	  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) &&
-			     (h0->flags & VLIB_BUFFER_IS_TRACED)))
-	    {
-	      hicn_data_fwd_trace_t *t =
-		vlib_add_trace (vm, node, h0, sizeof (*t));
-	      t->pkt_type = HICN_PKT_TYPE_CONTENT;
-	      t->sw_if_index = vnet_buffer (h0)->sw_if_index[VLIB_RX];
-	      t->next_index = next0;
-	      clib_memcpy (t->packet_data,
-			   vlib_buffer_get_current (h0),
-			   sizeof (t->packet_data));
-	    }
-	  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) &&
-			     (h1->flags & VLIB_BUFFER_IS_TRACED)))
-	    {
-	      hicn_data_fwd_trace_t *t =
-		vlib_add_trace (vm, node, h1, sizeof (*t));
-	      t->pkt_type = HICN_PKT_TYPE_CONTENT;
-	      t->sw_if_index = vnet_buffer (h1)->sw_if_index[VLIB_RX];
-	      t->next_index = next1;
-	      clib_memcpy (t->packet_data,
-			   vlib_buffer_get_current (h1),
-			   sizeof (t->packet_data));
-	    }
-	  vlib_validate_buffer_enqueue_x2 (vm, node, *next_index,
-					   (*to_next), *n_left_to_next,
-					   hi0, hi1, next0, next1);
-	}
-
-
-      while (n_left_from > 0 && *n_left_to_next > 0)
-	{
-	  vlib_buffer_t *h0;
-	  u32 hi0;
-	  hicn_face_id_t face0;
-
-	  face0 = hicn_face_db_get_dpo_face (i++, &pitp->u.pit.faces);
-
-	  h0 = vlib_get_buffer (vm, clones[0]);
-
-	  (*to_next)[0] = hi0 = clones[0];
-	  *to_next += 1;
-	  *n_left_to_next -= 1;
-	  n_left_from -= 1;
-	  clones += 1;
-
-	  next0 = isv6 ? HICN_DATA_FWD_NEXT_IFACE6_OUT :
-            HICN_DATA_FWD_NEXT_IFACE4_OUT;
-	  vnet_buffer (h0)->ip.adj_index[VLIB_TX] = face0;
-
-	  stats->pkts_data_count++;
-
-	  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) &&
-			     (h0->flags & VLIB_BUFFER_IS_TRACED)))
-	    {
-	      hicn_data_fwd_trace_t *t =
-		vlib_add_trace (vm, node, h0, sizeof (*t));
-	      t->pkt_type = HICN_PKT_TYPE_CONTENT;
-	      t->sw_if_index = vnet_buffer (h0)->sw_if_index[VLIB_RX];
-	      t->next_index = next0;
-	      clib_memcpy (t->packet_data,
-			   vlib_buffer_get_current (h0),
-			   sizeof (t->packet_data));
-	    }
-	  /*
-	   * Verify speculative enqueue, maybe switch current
-	   * next frame
-	   */
-	  /*
-	   * Fix in case of a wrong speculation. Needed to
-	   * clone the data in the right frame
-	   */
-	  vlib_validate_buffer_enqueue_x1 (vm, node, *next_index,
-					   *to_next, *n_left_to_next,
-					   hi0, next0);
-
-	}
-
-      /* Ensure that there is space for the next clone (if any) */
-      if (PREDICT_FALSE (*n_left_to_next == 0))
-	{
-	  vlib_put_next_frame (vm, node, *next_index, *n_left_to_next);
-
-	  vlib_get_next_frame (vm, node, *next_index, *to_next,
-			       *n_left_to_next);
-	}
-    }
-
-  vec_free (header);
-
-  if (PREDICT_FALSE (!found))
-    {
-      ASSERT (0);
-      drop_packet (vm, bi0, n_left_to_next, &next0, to_next, next_index,
-		   node);
-      ret = HICN_ERROR_FACE_NOT_FOUND;
-    }
-  return ret;
-}
-
-always_inline void
-clone_data_to_cs (vlib_main_t * vm, hicn_pit_cs_t * pitcs,
-		  hicn_pcs_entry_t * pitp, hicn_header_t * hicn0, f64 tnow,
-		  hicn_hash_node_t * nodep, vlib_buffer_t * b0,
-		  hicn_hash_entry_t * hash_entry, u64 name_hash,
-		  hicn_buffer_t * hicnb, const hicn_dpo_vft_t * dpo_vft,
-		  dpo_id_t * hicn_dpo_id, hicn_lifetime_t dmsg_lifetime)
-{
-  /*
-   * At this point we think we're safe to proceed. Store the CS buf in
-   * the PIT/CS hashtable entry
-   */
-
-  /*
-   * Start turning the PIT into a CS. Note that we may be stepping on
-   * the PIT part of the union as we update the CS part, so don't
-   * expect the PIT part to be valid after this point.
-   */
-  hicn_buffer_t *hicnb0 = hicn_get_buffer (b0);
-  hicn_pit_to_cs (vm, pitcs, pitp, hash_entry, nodep, dpo_vft, hicn_dpo_id,
-		  hicnb->face_id,
-		  hicnb0->flags & HICN_BUFFER_FLAGS_FACE_IS_APP);
-
-  pitp->shared.create_time = tnow;
-
-  if (dmsg_lifetime < HICN_PARAM_CS_LIFETIME_MIN
-      || dmsg_lifetime > HICN_PARAM_CS_LIFETIME_MAX)
-    {
-      dmsg_lifetime = HICN_PARAM_CS_LIFETIME_DFLT;
-    }
-  pitp->shared.expire_time = hicn_pcs_get_exp_time (tnow, dmsg_lifetime);
-
-  /* Store the original packet buffer in the CS node */
-  pitp->u.cs.cs_pkt_buf = vlib_get_buffer_index (vm, b0);
-}
-
-/* packet trace format function */
-always_inline u8 *
-hicn_data_fwd_format_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 *);
-  hicn_data_fwd_trace_t *t = va_arg (*args, hicn_data_fwd_trace_t *);
-  u32 indent = format_get_indent (s);
-
-  s = format (s, "DATAFWD: pkt: %d, sw_if_index %d, next index %d\n",
-	      (int) t->pkt_type, t->sw_if_index, t->next_index);
-
-  s = format (s, "%U%U", format_white_space, indent,
-	      format_ip6_header, t->packet_data, sizeof (t->packet_data));
-  return (s);
-}
-
-/*
- * Node registration for the data forwarder node
- */
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE(hicn_data_fwd_node) =
-{
-  .function = hicn_data_node_fn,
-  .name = "hicn-data-fwd",
-  .vector_size = sizeof(u32),
-  .format_trace = hicn_data_fwd_format_trace,
-  .type = VLIB_NODE_TYPE_INTERNAL,
-  .n_errors = ARRAY_LEN(hicn_data_fwd_error_strings),
-  .error_strings = hicn_data_fwd_error_strings,
-  .n_next_nodes = HICN_DATA_FWD_N_NEXT,
-  /* edit / add dispositions here */
-  .next_nodes = {
-    [HICN_DATA_FWD_NEXT_V4_LOOKUP] = "ip4-lookup",
-    [HICN_DATA_FWD_NEXT_V6_LOOKUP] = "ip6-lookup",
-    [HICN_DATA_FWD_NEXT_IFACE4_OUT] = "hicn4-iface-output",
-    [HICN_DATA_FWD_NEXT_IFACE6_OUT] = "hicn6-iface-output",
-    [HICN_DATA_FWD_NEXT_ERROR_DROP] = "error-drop",
-  },
-};
-/* *INDENT-ON* */
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables: eval: (c-set-style "gnu") End:
- */