[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, 697 deletions

diff --git a/hicn-plugin/src/data_input_node.c b/hicn-plugin/src/data_input_node.c
deleted file mode 100644
index 8d20f54a6..000000000
--- a/hicn-plugin/src/data_input_node.c
+++ /dev/null
@@ -1,697 +0,0 @@
-/*
- * Copyright (c) 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/vnet.h>
-#include <vnet/ip/ip.h>
-#include <vnet/fib/ip6_fib.h>
-#include <vnet/fib/fib_table.h>	/* for FIB table and entry creation */
-#include <vnet/fib/fib_entry.h>	/* for FIB table and entry creation */
-#include <vnet/fib/ip4_fib.h>
-#include <vnet/dpo/load_balance.h>
-
-#include "mgmt.h"
-#include "strategy_dpo_manager.h"
-
-static __clib_unused char *hicn_data_input_error_strings[] = {
-#define _(sym, string) string,
-  foreach_hicnfwd_error
-#undef _
-};
-
-typedef struct
-{
-  u32 next_index;
-  u32 sw_if_index;
-} hicn_data_input_t;
-
-typedef enum
-{
-  HICN_DATA_INPUT_IP6_NEXT_FACE,
-  HICN_DATA_INPUT_IP6_NEXT_IP6_LOCAL,
-  HICN_DATA_INPUT_IP6_N_NEXT,
-} hicn_data_input_ip6_next_t;
-
-typedef enum
-{
-  HICN_DATA_INPUT_IP4_NEXT_FACE,
-  HICN_DATA_INPUT_IP4_NEXT_IP4_LOCAL,
-  HICN_DATA_INPUT_IP4_N_NEXT,
-} hicn_data_input_ip4_next_t;
-
-typedef struct
-{
-  u32 next_index;
-  u32 sw_if_index;
-  u8 isv6;
-} hicn_data_input_trace_t;
-
-vlib_node_registration_t hicn_data_input_ip6_node;
-vlib_node_registration_t hicn_data_input_ip4_node;
-
-static __clib_unused u8 *
-format_hicn_data_input_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_input_trace_t *t = va_arg (*args, hicn_data_input_trace_t *);
-  u32 indent = format_get_indent (s);
-  u8 isv6 = (u8) va_arg (*args, int);
-
-  s =
-    format (s, "%U hicn_data_input%s: sw_if_index %d next-index %d",
-	    format_white_space, indent, isv6 ? "_ip6" : "_ip4",
-	    t->sw_if_index, t->next_index);
-  return s;
-}
-
-static uword
-hicn_data_input_ip6_fn (vlib_main_t * vm,
-			vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
-  ip6_main_t *im = &ip6_main;
-  vlib_combined_counter_main_t *cm = &load_balance_main.lbm_to_counters;
-  u32 n_left_from, n_left_to_next, *from, *to_next;
-  ip_lookup_next_t next;
-  u32 thread_index = vm->thread_index;
-
-  from = vlib_frame_vector_args (frame);
-  n_left_from = frame->n_vectors;
-  next = node->cached_next_index;
-
-  while (n_left_from > 0)
-    {
-      vlib_get_next_frame (vm, node, next, to_next, n_left_to_next);
-
-      while (n_left_from >= 4 && n_left_to_next >= 2)
-	{
-	  vlib_buffer_t *p0, *p1;
-	  u32 pi0, pi1, lbi0, lbi1, wrong_next;
-	  ip_lookup_next_t next0, next1;
-	  ip6_header_t *ip0, *ip1;
-	  ip6_address_t *src_addr0, *src_addr1;
-	  const dpo_id_t *dpo0, *dpo1;
-	  const load_balance_t *lb0, *lb1;
-
-	  /* 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, sizeof (ip0[0]), LOAD);
-	    CLIB_PREFETCH (p3->data, sizeof (ip0[0]), LOAD);
-	  }
-
-	  pi0 = to_next[0] = from[0];
-	  pi1 = to_next[1] = from[1];
-
-	  p0 = vlib_get_buffer (vm, pi0);
-	  p1 = vlib_get_buffer (vm, pi1);
-
-	  ip0 = vlib_buffer_get_current (p0);
-	  ip1 = vlib_buffer_get_current (p1);
-
-	  src_addr0 = &ip0->src_address;
-	  src_addr1 = &ip1->src_address;
-
-	  ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, p0);
-	  ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, p1);
-
-	  lbi0 = ip6_fib_table_fwding_lookup (vnet_buffer (p0)->ip.fib_index,
-					      src_addr0);
-	  lbi1 = ip6_fib_table_fwding_lookup (vnet_buffer (p1)->ip.fib_index,
-					      src_addr1);
-
-	  lb0 = load_balance_get (lbi0);
-	  lb1 = load_balance_get (lbi1);
-	  ASSERT (lb0->lb_n_buckets > 0);
-	  ASSERT (lb1->lb_n_buckets > 0);
-	  ASSERT (is_pow2 (lb0->lb_n_buckets));
-	  ASSERT (is_pow2 (lb1->lb_n_buckets));
-
-	  vnet_buffer (p0)->ip.flow_hash = vnet_buffer (p1)->ip.flow_hash = 0;
-
-	  //No vpp loadbalancing. Missing header file to exploit it
-	  dpo0 = load_balance_get_bucket_i (lb0, 0);
-	  dpo1 = load_balance_get_bucket_i (lb1, 0);
-
-	  if (dpo_is_hicn (dpo0))
-	    next0 = HICN_DATA_INPUT_IP6_NEXT_FACE;
-	  else
-	    next0 = HICN_DATA_INPUT_IP6_NEXT_IP6_LOCAL;
-
-	  if (dpo_is_hicn (dpo1))
-	    next1 = HICN_DATA_INPUT_IP6_NEXT_FACE;
-	  else
-	    next1 = HICN_DATA_INPUT_IP6_NEXT_IP6_LOCAL;
-
-	  if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) &&
-	      (p0->flags & VLIB_BUFFER_IS_TRACED))
-	    {
-	      hicn_data_input_trace_t *t =
-		vlib_add_trace (vm, node, p0, sizeof (*t));
-	      t->sw_if_index = vnet_buffer (p0)->sw_if_index[VLIB_RX];
-	      t->next_index = next0;
-	      t->isv6 = 1;
-	    }
-
-	  if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) &&
-	      (p1->flags & VLIB_BUFFER_IS_TRACED))
-	    {
-	      hicn_data_input_trace_t *t =
-		vlib_add_trace (vm, node, p1, sizeof (*t));
-	      t->sw_if_index = vnet_buffer (p1)->sw_if_index[VLIB_RX];
-	      t->next_index = next1;
-	      t->isv6 = 1;
-	    }
-
-
-	  vlib_increment_combined_counter
-	    (cm, thread_index, lbi0, 1, vlib_buffer_length_in_chain (vm, p0));
-	  vlib_increment_combined_counter
-	    (cm, thread_index, lbi1, 1, vlib_buffer_length_in_chain (vm, p1));
-
-	  from += 2;
-	  to_next += 2;
-	  n_left_to_next -= 2;
-	  n_left_from -= 2;
-
-	  wrong_next = (next0 != next) + 2 * (next1 != next);
-	  if (PREDICT_FALSE (wrong_next != 0))
-	    {
-	      switch (wrong_next)
-		{
-		case 1:
-		  /* A B A */
-		  to_next[-2] = pi1;
-		  to_next -= 1;
-		  n_left_to_next += 1;
-		  vlib_set_next_frame_buffer (vm, node, next0, pi0);
-		  break;
-
-		case 2:
-		  /* A A B */
-		  to_next -= 1;
-		  n_left_to_next += 1;
-		  vlib_set_next_frame_buffer (vm, node, next1, pi1);
-		  break;
-
-		case 3:
-		  /* A B C */
-		  to_next -= 2;
-		  n_left_to_next += 2;
-		  vlib_set_next_frame_buffer (vm, node, next0, pi0);
-		  vlib_set_next_frame_buffer (vm, node, next1, pi1);
-		  if (next0 == next1)
-		    {
-		      /* A B B */
-		      vlib_put_next_frame (vm, node, next, n_left_to_next);
-		      next = next1;
-		      vlib_get_next_frame (vm, node, next, to_next,
-					   n_left_to_next);
-		    }
-		}
-	    }
-	}
-
-      while (n_left_from > 0 && n_left_to_next > 0)
-	{
-	  vlib_buffer_t *p0;
-	  ip6_header_t *ip0;
-	  u32 pi0, lbi0;
-	  ip_lookup_next_t next0;
-	  load_balance_t *lb0;
-	  ip6_address_t *src_addr0;
-	  const dpo_id_t *dpo0;
-
-	  pi0 = from[0];
-	  to_next[0] = pi0;
-
-	  p0 = vlib_get_buffer (vm, pi0);
-	  ip0 = vlib_buffer_get_current (p0);
-	  src_addr0 = &ip0->src_address;
-	  ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, p0);
-	  lbi0 = ip6_fib_table_fwding_lookup (vnet_buffer (p0)->ip.fib_index,
-					      src_addr0);
-
-	  lb0 = load_balance_get (lbi0);
-	  ASSERT (lb0->lb_n_buckets > 0);
-	  ASSERT (is_pow2 (lb0->lb_n_buckets));
-
-	  //No vpp loadbalancing. Missing header file to exploit it
-	  dpo0 = load_balance_get_bucket_i (lb0, 0);
-
-	  if (dpo_is_hicn (dpo0))
-	    next0 = HICN_DATA_INPUT_IP6_NEXT_FACE;
-	  else
-	    next0 = HICN_DATA_INPUT_IP6_NEXT_IP6_LOCAL;
-
-	  if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) &&
-	      (p0->flags & VLIB_BUFFER_IS_TRACED))
-	    {
-	      hicn_data_input_trace_t *t =
-		vlib_add_trace (vm, node, p0, sizeof (*t));
-	      t->sw_if_index = vnet_buffer (p0)->sw_if_index[VLIB_RX];
-	      t->next_index = next0;
-	      t->isv6 = 1;
-	    }
-
-	  vlib_increment_combined_counter
-	    (cm, thread_index, lbi0, 1, vlib_buffer_length_in_chain (vm, p0));
-
-	  from += 1;
-	  to_next += 1;
-	  n_left_to_next -= 1;
-	  n_left_from -= 1;
-
-	  if (PREDICT_FALSE (next0 != next))
-	    {
-	      n_left_to_next += 1;
-	      vlib_put_next_frame (vm, node, next, n_left_to_next);
-	      next = next0;
-	      vlib_get_next_frame (vm, node, next, to_next, n_left_to_next);
-	      to_next[0] = pi0;
-	      to_next += 1;
-	      n_left_to_next -= 1;
-	    }
-	}
-
-      vlib_put_next_frame (vm, node, next, n_left_to_next);
-    }
-
-  return frame->n_vectors;
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE(hicn_data_input_ip6) =
-    {
-     .function = hicn_data_input_ip6_fn,
-     .name = "hicn-data-input-ip6",
-     .vector_size = sizeof(u32),
-     .format_trace = format_hicn_data_input_trace,
-     .type = VLIB_NODE_TYPE_INTERNAL,
-     .n_errors = ARRAY_LEN(hicn_data_input_error_strings),
-     .error_strings = hicn_data_input_error_strings,
-     .n_next_nodes = HICN_DATA_INPUT_IP6_N_NEXT,
-     .next_nodes =
-     {
-      [HICN_DATA_INPUT_IP6_NEXT_FACE] = "hicn6-face-input",
-      [HICN_DATA_INPUT_IP6_NEXT_IP6_LOCAL] = "ip6-local-end-of-arc"
-     },
-    };
-/* *INDENT-ON* */
-
-/* *INDENT-OFF* */
-VNET_FEATURE_INIT(hicn_data_input_ip6_arc, static)=
-    {
-     .arc_name = "ip6-local",
-     .node_name = "hicn-data-input-ip6",
-     .runs_before = VNET_FEATURES("ip6-local-end-of-arc"),
-    };
-/* *INDENT-ON* */
-
-
-
-always_inline uword
-hicn_data_input_ip4_fn (vlib_main_t * vm,
-			vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
-  ip4_main_t *im = &ip4_main;
-  vlib_combined_counter_main_t *cm = &load_balance_main.lbm_to_counters;
-  u32 n_left, *from;
-  u32 thread_index = vm->thread_index;
-  vlib_buffer_t *bufs[VLIB_FRAME_SIZE];
-  vlib_buffer_t **b = bufs;
-  u16 nexts[VLIB_FRAME_SIZE], *next;
-
-  from = vlib_frame_vector_args (frame);
-  n_left = frame->n_vectors;
-  next = nexts;
-  vlib_get_buffers (vm, from, bufs, n_left);
-
-#if (CLIB_N_PREFETCHES >= 8)
-  while (n_left >= 4)
-    {
-      ip4_header_t *ip0, *ip1, *ip2, *ip3;
-      const load_balance_t *lb0, *lb1, *lb2, *lb3;
-      ip4_fib_mtrie_t *mtrie0, *mtrie1, *mtrie2, *mtrie3;
-      ip4_fib_mtrie_leaf_t leaf0, leaf1, leaf2, leaf3;
-      ip4_address_t *src_addr0, *src_addr1, *src_addr2, *src_addr3;
-      u32 lb_index0, lb_index1, lb_index2, lb_index3;
-      const dpo_id_t *dpo0, *dpo1, *dpo2, *dpo3;
-
-      /* Prefetch next iteration. */
-      if (n_left >= 8)
-	{
-	  vlib_prefetch_buffer_header (b[4], LOAD);
-	  vlib_prefetch_buffer_header (b[5], LOAD);
-	  vlib_prefetch_buffer_header (b[6], LOAD);
-	  vlib_prefetch_buffer_header (b[7], LOAD);
-
-	  CLIB_PREFETCH (b[4]->data, sizeof (ip0[0]), LOAD);
-	  CLIB_PREFETCH (b[5]->data, sizeof (ip0[0]), LOAD);
-	  CLIB_PREFETCH (b[6]->data, sizeof (ip0[0]), LOAD);
-	  CLIB_PREFETCH (b[7]->data, sizeof (ip0[0]), LOAD);
-	}
-
-      ip0 = vlib_buffer_get_current (b[0]);
-      ip1 = vlib_buffer_get_current (b[1]);
-      ip2 = vlib_buffer_get_current (b[2]);
-      ip3 = vlib_buffer_get_current (b[3]);
-
-      src_addr0 = &ip0->src_address;
-      src_addr1 = &ip1->src_address;
-      src_addr2 = &ip2->src_address;
-      src_addr3 = &ip3->src_address;
-
-      ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, b[0]);
-      ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, b[1]);
-      ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, b[2]);
-      ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, b[3]);
-
-      mtrie0 = &ip4_fib_get (vnet_buffer (b[0])->ip.fib_index)->mtrie;
-      mtrie1 = &ip4_fib_get (vnet_buffer (b[1])->ip.fib_index)->mtrie;
-      mtrie2 = &ip4_fib_get (vnet_buffer (b[2])->ip.fib_index)->mtrie;
-      mtrie3 = &ip4_fib_get (vnet_buffer (b[3])->ip.fib_index)->mtrie;
-
-      leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, src_addr0);
-      leaf1 = ip4_fib_mtrie_lookup_step_one (mtrie1, src_addr1);
-      leaf2 = ip4_fib_mtrie_lookup_step_one (mtrie2, src_addr2);
-      leaf3 = ip4_fib_mtrie_lookup_step_one (mtrie3, src_addr3);
-
-      leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, src_addr0, 2);
-      leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, src_addr1, 2);
-      leaf2 = ip4_fib_mtrie_lookup_step (mtrie2, leaf2, src_addr2, 2);
-      leaf3 = ip4_fib_mtrie_lookup_step (mtrie3, leaf3, src_addr3, 2);
-
-      leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, src_addr0, 3);
-      leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, src_addr1, 3);
-      leaf2 = ip4_fib_mtrie_lookup_step (mtrie2, leaf2, src_addr2, 3);
-      leaf3 = ip4_fib_mtrie_lookup_step (mtrie3, leaf3, src_addr3, 3);
-
-      lb_index0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0);
-      lb_index1 = ip4_fib_mtrie_leaf_get_adj_index (leaf1);
-      lb_index2 = ip4_fib_mtrie_leaf_get_adj_index (leaf2);
-      lb_index3 = ip4_fib_mtrie_leaf_get_adj_index (leaf3);
-
-      ASSERT (lb_index0 && lb_index1 && lb_index2 && lb_index3);
-      lb0 = load_balance_get (lb_index0);
-      lb1 = load_balance_get (lb_index1);
-      lb2 = load_balance_get (lb_index2);
-      lb3 = load_balance_get (lb_index3);
-
-      ASSERT (lb0->lb_n_buckets > 0);
-      ASSERT (is_pow2 (lb0->lb_n_buckets));
-      ASSERT (lb1->lb_n_buckets > 0);
-      ASSERT (is_pow2 (lb1->lb_n_buckets));
-      ASSERT (lb2->lb_n_buckets > 0);
-      ASSERT (is_pow2 (lb2->lb_n_buckets));
-      ASSERT (lb3->lb_n_buckets > 0);
-      ASSERT (is_pow2 (lb3->lb_n_buckets));
-
-      dpo0 = load_balance_get_bucket_i (lb0, 0);
-      dpo1 = load_balance_get_bucket_i (lb1, 0);
-      dpo2 = load_balance_get_bucket_i (lb2, 0);
-      dpo3 = load_balance_get_bucket_i (lb3, 0);
-
-      if (dpo_is_hicn (dpo0))
-	next[0] = HICN_DATA_INPUT_IP4_NEXT_FACE;
-      else
-	next[0] = HICN_DATA_INPUT_IP4_NEXT_IP4_LOCAL;
-
-      if (dpo_is_hicn (dpo1))
-	next[1] = HICN_DATA_INPUT_IP4_NEXT_FACE;
-      else
-	next[1] = HICN_DATA_INPUT_IP4_NEXT_IP4_LOCAL;
-
-      if (dpo_is_hicn (dpo2))
-	next[2] = HICN_DATA_INPUT_IP4_NEXT_FACE;
-      else
-	next[2] = HICN_DATA_INPUT_IP4_NEXT_IP4_LOCAL;
-
-      if (dpo_is_hicn (dpo3))
-	next[3] = HICN_DATA_INPUT_IP4_NEXT_FACE;
-      else
-	next[3] = HICN_DATA_INPUT_IP4_NEXT_IP4_LOCAL;
-
-
-      if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) &&
-	  (b[0]->flags & VLIB_BUFFER_IS_TRACED))
-	{
-	  hicn_data_input_trace_t *t =
-	    vlib_add_trace (vm, node, b[0], sizeof (*t));
-	  t->sw_if_index = vnet_buffer (b[0])->sw_if_index[VLIB_RX];
-	  t->next_index = next[0];
-	  t->isv6 = 0;
-	}
-
-      if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) &&
-	  (b[1]->flags & VLIB_BUFFER_IS_TRACED))
-	{
-	  hicn_data_input_trace_t *t =
-	    vlib_add_trace (vm, node, b[1], sizeof (*t));
-	  t->sw_if_index = vnet_buffer (b[1])->sw_if_index[VLIB_RX];
-	  t->next_index = next[1];
-	  t->isv6 = 0;
-	}
-
-      if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) &&
-	  (b[2]->flags & VLIB_BUFFER_IS_TRACED))
-	{
-	  hicn_data_input_trace_t *t =
-	    vlib_add_trace (vm, node, b[2], sizeof (*t));
-	  t->sw_if_index = vnet_buffer (b[2])->sw_if_index[VLIB_RX];
-	  t->next_index = next[0];
-	  t->isv6 = 0;
-	}
-
-      if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) &&
-	  (b[3]->flags & VLIB_BUFFER_IS_TRACED))
-	{
-	  hicn_data_input_trace_t *t =
-	    vlib_add_trace (vm, node, b[3], sizeof (*t));
-	  t->sw_if_index = vnet_buffer (b[3])->sw_if_index[VLIB_RX];
-	  t->next_index = next[3];
-	  t->isv6 = 0;
-	}
-
-      vlib_increment_combined_counter
-	(cm, thread_index, lb_index0, 1,
-	 vlib_buffer_length_in_chain (vm, b[0]));
-      vlib_increment_combined_counter
-	(cm, thread_index, lb_index1, 1,
-	 vlib_buffer_length_in_chain (vm, b[1]));
-      vlib_increment_combined_counter
-	(cm, thread_index, lb_index2, 1,
-	 vlib_buffer_length_in_chain (vm, b[2]));
-      vlib_increment_combined_counter
-	(cm, thread_index, lb_index3, 1,
-	 vlib_buffer_length_in_chain (vm, b[3]));
-
-      b += 4;
-      next += 4;
-      n_left -= 4;
-    }
-#elif (CLIB_N_PREFETCHES >= 4)
-  while (n_left >= 4)
-    {
-      ip4_header_t *ip0, *ip1;
-      const load_balance_t *lb0, *lb1;
-      ip4_fib_mtrie_t *mtrie0, *mtrie1;
-      ip4_fib_mtrie_leaf_t leaf0, leaf1;
-      ip4_address_t *src_addr0, *src_addr1;
-      u32 lb_index0, lb_index1;
-      flow_hash_config_t flow_hash_config0, flow_hash_config1;
-      u32 hash_c0, hash_c1;
-      const dpo_id_t *dpo0, *dpo1;
-
-      /* Prefetch next iteration. */
-      {
-	vlib_prefetch_buffer_header (b[2], LOAD);
-	vlib_prefetch_buffer_header (b[3], LOAD);
-
-	CLIB_PREFETCH (b[2]->data, sizeof (ip0[0]), LOAD);
-	CLIB_PREFETCH (b[3]->data, sizeof (ip0[0]), LOAD);
-      }
-
-      ip0 = vlib_buffer_get_current (b[0]);
-      ip1 = vlib_buffer_get_current (b[1]);
-
-      src_addr0 = &ip0->src_address;
-      src_addr1 = &ip1->src_address;
-
-      ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, b[0]);
-      ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, b[1]);
-
-      mtrie0 = &ip4_fib_get (vnet_buffer (b[0])->ip.fib_index)->mtrie;
-      mtrie1 = &ip4_fib_get (vnet_buffer (b[1])->ip.fib_index)->mtrie;
-
-      leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, src_addr0);
-      leaf1 = ip4_fib_mtrie_lookup_step_one (mtrie1, src_addr1);
-
-      leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, src_addr0, 2);
-      leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, src_addr1, 2);
-
-      leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, src_addr0, 3);
-      leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, src_addr1, 3);
-
-      lb_index0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0);
-      lb_index1 = ip4_fib_mtrie_leaf_get_adj_index (leaf1);
-
-      ASSERT (lb_index0 && lb_index1);
-      lb0 = load_balance_get (lb_index0);
-      lb1 = load_balance_get (lb_index1);
-
-      ASSERT (lb0->lb_n_buckets > 0);
-      ASSERT (is_pow2 (lb0->lb_n_buckets));
-      ASSERT (lb1->lb_n_buckets > 0);
-      ASSERT (is_pow2 (lb1->lb_n_buckets));
-
-      dpo0 = load_balance_get_bucket_i (lb0, 0);
-      dpo1 = load_balance_get_bucket_i (lb1, 0);
-
-      if (dpo_is_hicn (dpo0))
-	next[0] = HICN_DATA_INPUT_IP4_NEXT_FACE;
-      else
-	next[0] = HICN_DATA_INPUT_IP4_NEXT_IP4_LOCAL;
-
-      if (dpo_is_hicn (dpo1))
-	next[1] = HICN_DATA_INPUT_IP4_NEXT_FACE;
-      else
-	next[1] = HICN_DATA_INPUT_IP4_NEXT_IP4_LOCAL;
-
-      if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) &&
-	  (b0->flags & VLIB_BUFFER_IS_TRACED))
-	{
-	  hicn_data_input_trace_t *t =
-	    vlib_add_trace (vm, node, b0, sizeof (*t));
-	  t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
-	  t->next_index = next[0];
-	  t->isv6 = 0;
-	}
-
-      if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) &&
-	  (b1->flags & VLIB_BUFFER_IS_TRACED))
-	{
-	  hicn_data_input_trace_t *t =
-	    vlib_add_trace (vm, node, b1, sizeof (*t));
-	  t->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_RX];
-	  t->next_index = next[1];
-	  t->isv6 = 0;
-	}
-
-
-      vlib_increment_combined_counter
-	(cm, thread_index, lb_index0, 1,
-	 vlib_buffer_length_in_chain (vm, b[0]));
-      vlib_increment_combined_counter
-	(cm, thread_index, lb_index1, 1,
-	 vlib_buffer_length_in_chain (vm, b[1]));
-
-      b += 2;
-      next += 2;
-      n_left -= 2;
-    }
-#endif
-  while (n_left > 0)
-    {
-      ip4_header_t *ip0;
-      const load_balance_t *lb0;
-      ip4_fib_mtrie_t *mtrie0;
-      ip4_fib_mtrie_leaf_t leaf0;
-      ip4_address_t *src_addr0;
-      u32 lbi0;
-      const dpo_id_t *dpo0;
-
-      ip0 = vlib_buffer_get_current (b[0]);
-      src_addr0 = &ip0->src_address;
-      ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, b[0]);
-
-      mtrie0 = &ip4_fib_get (vnet_buffer (b[0])->ip.fib_index)->mtrie;
-      leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, src_addr0);
-      leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, src_addr0, 2);
-      leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, src_addr0, 3);
-      lbi0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0);
-
-      ASSERT (lbi0);
-      lb0 = load_balance_get (lbi0);
-
-      ASSERT (lb0->lb_n_buckets > 0);
-      ASSERT (is_pow2 (lb0->lb_n_buckets));
-
-      dpo0 = load_balance_get_bucket_i (lb0, 0);
-
-      if (dpo_is_hicn (dpo0))
-	next[0] = HICN_DATA_INPUT_IP4_NEXT_FACE;
-      else
-	next[0] = HICN_DATA_INPUT_IP4_NEXT_IP4_LOCAL;
-
-      if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) &&
-	  (b[0]->flags & VLIB_BUFFER_IS_TRACED))
-	{
-	  hicn_data_input_trace_t *t =
-	    vlib_add_trace (vm, node, b[0], sizeof (*t));
-	  t->sw_if_index = vnet_buffer (b[0])->sw_if_index[VLIB_RX];
-	  t->next_index = next[0];
-	  t->isv6 = 0;
-	}
-
-      vlib_increment_combined_counter (cm, thread_index, lbi0, 1,
-				       vlib_buffer_length_in_chain (vm,
-								    b[0]));
-
-      b += 1;
-      next += 1;
-      n_left -= 1;
-    }
-
-  vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
-
-  if (node->flags & VLIB_NODE_FLAG_TRACE)
-    ip4_forward_next_trace (vm, node, frame, VLIB_TX);
-
-  return frame->n_vectors;
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE(hicn_data_input_ip4) =
-    {
-     .function = hicn_data_input_ip4_fn,
-     .name = "hicn-data-input-ip4",
-     .vector_size = sizeof(u32),
-     .format_trace = format_hicn_data_input_trace,
-     .type = VLIB_NODE_TYPE_INTERNAL,
-     .n_errors = ARRAY_LEN(hicn_data_input_error_strings),
-     .error_strings = hicn_data_input_error_strings,
-     .n_next_nodes = HICN_DATA_INPUT_IP4_N_NEXT,
-     .next_nodes =
-     {
-      [HICN_DATA_INPUT_IP4_NEXT_FACE] = "hicn4-face-input",
-      [HICN_DATA_INPUT_IP4_NEXT_IP4_LOCAL] = "ip4-local-end-of-arc"
-     },
-    };
-/* *INDENT-ON* */
-
-/* *INDENT-OFF* */
-VNET_FEATURE_INIT(hicn_data_input_ip4_arc, static)=
-    {
-     .arc_name = "ip4-local",
-     .node_name = "hicn-data-input-ip4",
-     .runs_before = VNET_FEATURES("ip4-local-end-of-arc"),
-    };
-/* *INDENT-ON* */