node_funcs.c

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/*
 * Copyright (c) 2015 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 <stdint.h>
 
#include <vlib/vlib.h>
#include <vnet/vnet.h>
#include <vnet/policer/policer.h>
#include <vnet/policer/police_inlines.h>
#include <vnet/ip/ip.h>
#include <vnet/classify/policer_classify.h>
#include <vnet/classify/vnet_classify.h>
#include <vnet/l2/feat_bitmap.h>
#include <vnet/l2/l2_input.h>
 
 
/* Dispatch functions meant to be instantiated elsewhere */
 
typedef struct
{
  u32 next_index;
  u32 sw_if_index;
  u32 policer_index;
} vnet_policer_trace_t;
 
/* packet trace format function */
static u8 *
format_policer_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 *);
  vnet_policer_trace_t *t = va_arg (*args, vnet_policer_trace_t *);
 
  s = format (s, "VNET_POLICER: sw_if_index %d policer_index %d next %d",
              t->sw_if_index, t->policer_index, t->next_index);
  return s;
}
 
#define foreach_vnet_policer_error              \
_(TRANSMIT, "Packets Transmitted")              \
_(DROP, "Packets Dropped")
 
typedef enum
{
#define _(sym,str) VNET_POLICER_ERROR_##sym,
  foreach_vnet_policer_error
#undef _
    VNET_POLICER_N_ERROR,
} vnet_policer_error_t;
 
static char *vnet_policer_error_strings[] = {
#define _(sym,string) string,
  foreach_vnet_policer_error
#undef _
};
 
static inline uword
vnet_policer_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
                     vlib_frame_t *frame)
{
  u32 n_left_from, *from, *to_next;
  vnet_policer_next_t next_index;
  vnet_policer_main_t *pm = &vnet_policer_main;
  u64 time_in_policer_periods;
  u32 transmitted = 0;
 
  time_in_policer_periods =
    clib_cpu_time_now () >> POLICER_TICKS_PER_PERIOD_SHIFT;
 
  from = vlib_frame_vector_args (frame);
  n_left_from = frame->n_vectors;
  next_index = node->cached_next_index;
 
  while (n_left_from > 0)
    {
      u32 n_left_to_next;
 
      vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
 
      while (n_left_from >= 4 && n_left_to_next >= 2)
        {
          u32 bi0, bi1;
          vlib_buffer_t *b0, *b1;
          u32 next0, next1;
          u32 sw_if_index0, sw_if_index1;
          u32 pi0 = 0, pi1 = 0;
          u8 act0, act1;
 
          /* Prefetch next iteration. */
          {
            vlib_buffer_t *b2, *b3;
 
            b2 = vlib_get_buffer (vm, from[2]);
            b3 = vlib_get_buffer (vm, from[3]);
 
            vlib_prefetch_buffer_header (b2, LOAD);
            vlib_prefetch_buffer_header (b3, LOAD);
          }
 
          /* speculatively enqueue b0 and b1 to the current next frame */
          to_next[0] = bi0 = from[0];
          to_next[1] = bi1 = from[1];
          from += 2;
          to_next += 2;
          n_left_from -= 2;
          n_left_to_next -= 2;
 
          b0 = vlib_get_buffer (vm, bi0);
          b1 = vlib_get_buffer (vm, bi1);
 
          sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
          sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
 
          pi0 = pm->policer_index_by_sw_if_index[sw_if_index0];
          pi1 = pm->policer_index_by_sw_if_index[sw_if_index1];
 
          act0 = vnet_policer_police (vm, b0, pi0, time_in_policer_periods,
                                      POLICE_CONFORM /* no chaining */, true);
 
          act1 = vnet_policer_police (vm, b1, pi1, time_in_policer_periods,
                                      POLICE_CONFORM /* no chaining */, true);
 
          if (PREDICT_FALSE (act0 == QOS_ACTION_HANDOFF))
            {
              next0 = VNET_POLICER_NEXT_HANDOFF;
              vnet_buffer (b0)->policer.index = pi0;
            }
          else if (PREDICT_FALSE (act0 == QOS_ACTION_DROP))
            {
              next0 = VNET_POLICER_NEXT_DROP;
              b0->error = node->errors[VNET_POLICER_ERROR_DROP];
            }
          else /* transmit or mark-and-transmit action */
            {
              transmitted++;
              vnet_feature_next (&next0, b0);
            }
 
          if (PREDICT_FALSE (act1 == QOS_ACTION_HANDOFF))
            {
              next1 = VNET_POLICER_NEXT_HANDOFF;
              vnet_buffer (b1)->policer.index = pi1;
            }
          else if (PREDICT_FALSE (act1 == QOS_ACTION_DROP)) /* drop action */
            {
              next1 = VNET_POLICER_NEXT_DROP;
              b1->error = node->errors[VNET_POLICER_ERROR_DROP];
            }
          else /* transmit or mark-and-transmit action */
            {
              transmitted++;
              vnet_feature_next (&next1, b1);
            }
 
          if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
            {
              if (b0->flags & VLIB_BUFFER_IS_TRACED)
                {
                  vnet_policer_trace_t *t =
                    vlib_add_trace (vm, node, b0, sizeof (*t));
                  t->sw_if_index = sw_if_index0;
                  t->next_index = next0;
                }
              if (b1->flags & VLIB_BUFFER_IS_TRACED)
                {
                  vnet_policer_trace_t *t =
                    vlib_add_trace (vm, node, b1, sizeof (*t));
                  t->sw_if_index = sw_if_index1;
                  t->next_index = next1;
                }
            }
 
          /* verify speculative enqueues, maybe switch current next frame */
          vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
                                           to_next, n_left_to_next,
                                           bi0, bi1, next0, next1);
        }
 
      while (n_left_from > 0 && n_left_to_next > 0)
        {
          u32 bi0;
          vlib_buffer_t *b0;
          u32 next0;
          u32 sw_if_index0;
          u32 pi0 = 0;
          u8 act0;
 
          bi0 = from[0];
          to_next[0] = bi0;
          from += 1;
          to_next += 1;
          n_left_from -= 1;
          n_left_to_next -= 1;
 
          b0 = vlib_get_buffer (vm, bi0);
 
          sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
 
          pi0 = pm->policer_index_by_sw_if_index[sw_if_index0];
 
          act0 = vnet_policer_police (vm, b0, pi0, time_in_policer_periods,
                                      POLICE_CONFORM /* no chaining */, true);
 
          if (PREDICT_FALSE (act0 == QOS_ACTION_HANDOFF))
            {
              next0 = VNET_POLICER_NEXT_HANDOFF;
              vnet_buffer (b0)->policer.index = pi0;
            }
          else if (PREDICT_FALSE (act0 == QOS_ACTION_DROP))
            {
              next0 = VNET_POLICER_NEXT_DROP;
              b0->error = node->errors[VNET_POLICER_ERROR_DROP];
            }
          else /* transmit or mark-and-transmit action */
            {
              transmitted++;
              vnet_feature_next (&next0, b0);
            }
 
          if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
                             && (b0->flags & VLIB_BUFFER_IS_TRACED)))
            {
              vnet_policer_trace_t *t =
                vlib_add_trace (vm, node, b0, sizeof (*t));
              t->sw_if_index = sw_if_index0;
              t->next_index = next0;
              t->policer_index = pi0;
            }
 
          /* 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,
                               VNET_POLICER_ERROR_TRANSMIT, transmitted);
  return frame->n_vectors;
}
 
VLIB_NODE_FN (policer_input_node)
(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
{
  return vnet_policer_inline (vm, node, frame);
}
 
VLIB_REGISTER_NODE (policer_input_node) = {
  .name = "policer-input",
  .vector_size = sizeof (u32),
  .format_trace = format_policer_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,
  .n_errors = ARRAY_LEN(vnet_policer_error_strings),
  .error_strings = vnet_policer_error_strings,
  .n_next_nodes = VNET_POLICER_N_NEXT,
  .next_nodes = {
                 [VNET_POLICER_NEXT_DROP] = "error-drop",
                 [VNET_POLICER_NEXT_HANDOFF] = "policer-input-handoff",
                 },
};
 
VNET_FEATURE_INIT (policer_input_node, static) = {
  .arc_name = "device-input",
  .node_name = "policer-input",
  .runs_before = VNET_FEATURES ("ethernet-input"),
};
 
static char *policer_input_handoff_error_strings[] = { "congestion drop" };
 
VLIB_NODE_FN (policer_input_handoff_node)
(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
{
  return policer_handoff (vm, node, frame, vnet_policer_main.fq_index, ~0);
}
 
VLIB_REGISTER_NODE (policer_input_handoff_node) = {
  .name = "policer-input-handoff",
  .vector_size = sizeof (u32),
  .format_trace = format_policer_handoff_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,
  .n_errors = ARRAY_LEN(policer_input_handoff_error_strings),
  .error_strings = policer_input_handoff_error_strings,
 
  .n_next_nodes = 1,
  .next_nodes = {
    [0] = "error-drop",
  },
};
 
typedef struct
{
  u32 sw_if_index;
  u32 next_index;
  u32 table_index;
  u32 offset;
  u32 policer_index;
} policer_classify_trace_t;
 
static u8 *
format_policer_classify_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 *);
  policer_classify_trace_t *t = va_arg (*args, policer_classify_trace_t *);
 
  s = format (s, "POLICER_CLASSIFY: sw_if_index %d next %d table %d offset %d"
              " policer_index %d",
              t->sw_if_index, t->next_index, t->table_index, t->offset,
              t->policer_index);
  return s;
}
 
#define foreach_policer_classify_error                 \
_(MISS, "Policer classify misses")                     \
_(HIT, "Policer classify hits")                        \
_(CHAIN_HIT, "Policer classify hits after chain walk") \
_(DROP, "Policer classify action drop")
 
typedef enum
{
#define _(sym,str) POLICER_CLASSIFY_ERROR_##sym,
  foreach_policer_classify_error
#undef _
    POLICER_CLASSIFY_N_ERROR,
} policer_classify_error_t;
 
static char *policer_classify_error_strings[] = {
#define _(sym,string) string,
  foreach_policer_classify_error
#undef _
};
 
static inline uword
policer_classify_inline (vlib_main_t * vm,
                         vlib_node_runtime_t * node,
                         vlib_frame_t * frame,
                         policer_classify_table_id_t tid)
{
  u32 n_left_from, *from, *to_next;
  policer_classify_next_index_t next_index;
  policer_classify_main_t *pcm = &policer_classify_main;
  vnet_classify_main_t *vcm = pcm->vnet_classify_main;
  f64 now = vlib_time_now (vm);
  u32 hits = 0;
  u32 misses = 0;
  u32 chain_hits = 0;
  u32 n_next_nodes;
  u64 time_in_policer_periods;
 
  time_in_policer_periods =
    clib_cpu_time_now () >> POLICER_TICKS_PER_PERIOD_SHIFT;
 
  n_next_nodes = node->n_next_nodes;
 
  from = vlib_frame_vector_args (frame);
  n_left_from = frame->n_vectors;
 
  /* First pass: compute hashes */
  while (n_left_from > 2)
    {
      vlib_buffer_t *b0, *b1;
      u32 bi0, bi1;
      u8 *h0, *h1;
      u32 sw_if_index0, sw_if_index1;
      u32 table_index0, table_index1;
      vnet_classify_table_t *t0, *t1;
 
      /* Prefetch next iteration */
      {
        vlib_buffer_t *p1, *p2;
 
        p1 = vlib_get_buffer (vm, from[1]);
        p2 = vlib_get_buffer (vm, from[2]);
 
        vlib_prefetch_buffer_header (p1, STORE);
        CLIB_PREFETCH (p1->data, CLIB_CACHE_LINE_BYTES, STORE);
        vlib_prefetch_buffer_header (p2, STORE);
        CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, STORE);
      }
 
      bi0 = from[0];
      b0 = vlib_get_buffer (vm, bi0);
      h0 = b0->data;
 
      bi1 = from[1];
      b1 = vlib_get_buffer (vm, bi1);
      h1 = b1->data;
 
      sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
      table_index0 =
        pcm->classify_table_index_by_sw_if_index[tid][sw_if_index0];
 
      sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
      table_index1 =
        pcm->classify_table_index_by_sw_if_index[tid][sw_if_index1];
 
      t0 = pool_elt_at_index (vcm->tables, table_index0);
 
      t1 = pool_elt_at_index (vcm->tables, table_index1);
 
      vnet_buffer (b0)->l2_classify.hash =
        vnet_classify_hash_packet (t0, (u8 *) h0);
 
      vnet_classify_prefetch_bucket (t0, vnet_buffer (b0)->l2_classify.hash);
 
      vnet_buffer (b1)->l2_classify.hash =
        vnet_classify_hash_packet (t1, (u8 *) h1);
 
      vnet_classify_prefetch_bucket (t1, vnet_buffer (b1)->l2_classify.hash);
 
      vnet_buffer (b0)->l2_classify.table_index = table_index0;
 
      vnet_buffer (b1)->l2_classify.table_index = table_index1;
 
      from += 2;
      n_left_from -= 2;
    }
 
  while (n_left_from > 0)
    {
      vlib_buffer_t *b0;
      u32 bi0;
      u8 *h0;
      u32 sw_if_index0;
      u32 table_index0;
      vnet_classify_table_t *t0;
 
      bi0 = from[0];
      b0 = vlib_get_buffer (vm, bi0);
      h0 = b0->data;
 
      sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
      table_index0 =
        pcm->classify_table_index_by_sw_if_index[tid][sw_if_index0];
 
      t0 = pool_elt_at_index (vcm->tables, table_index0);
      vnet_buffer (b0)->l2_classify.hash =
        vnet_classify_hash_packet (t0, (u8 *) h0);
 
      vnet_buffer (b0)->l2_classify.table_index = table_index0;
      vnet_classify_prefetch_bucket (t0, vnet_buffer (b0)->l2_classify.hash);
 
      from++;
      n_left_from--;
    }
 
  next_index = node->cached_next_index;
  from = vlib_frame_vector_args (frame);
  n_left_from = frame->n_vectors;
 
  while (n_left_from > 0)
    {
      u32 n_left_to_next;
 
      vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
 
      /* Not enough load/store slots to dual loop... */
      while (n_left_from > 0 && n_left_to_next > 0)
        {
          u32 bi0;
          vlib_buffer_t *b0;
          u32 next0 = POLICER_CLASSIFY_NEXT_INDEX_DROP;
          u32 table_index0;
          vnet_classify_table_t *t0;
          vnet_classify_entry_t *e0;
          u64 hash0;
          u8 *h0;
          u8 act0;
 
          /* Stride 3 seems to work best */
          if (PREDICT_TRUE (n_left_from > 3))
            {
              vlib_buffer_t *p1 = vlib_get_buffer (vm, from[3]);
              vnet_classify_table_t *tp1;
              u32 table_index1;
              u64 phash1;
 
              table_index1 = vnet_buffer (p1)->l2_classify.table_index;
 
              if (PREDICT_TRUE (table_index1 != ~0))
                {
                  tp1 = pool_elt_at_index (vcm->tables, table_index1);
                  phash1 = vnet_buffer (p1)->l2_classify.hash;
                  vnet_classify_prefetch_entry (tp1, phash1);
                }
            }
 
          /* Speculatively enqueue b0 to the current next frame */
          bi0 = from[0];
          to_next[0] = bi0;
          from += 1;
          to_next += 1;
          n_left_from -= 1;
          n_left_to_next -= 1;
 
          b0 = vlib_get_buffer (vm, bi0);
          h0 = b0->data;
          table_index0 = vnet_buffer (b0)->l2_classify.table_index;
          e0 = 0;
          t0 = 0;
 
          if (tid == POLICER_CLASSIFY_TABLE_L2)
            {
              /* Feature bitmap update and determine the next node */
              next0 = vnet_l2_feature_next (b0, pcm->feat_next_node_index,
                                            L2INPUT_FEAT_POLICER_CLAS);
            }
          else
            vnet_get_config_data (pcm->vnet_config_main[tid],
                                  &b0->current_config_index, &next0,
                                  /* # bytes of config data */ 0);
 
          vnet_buffer (b0)->l2_classify.opaque_index = ~0;
 
          if (PREDICT_TRUE (table_index0 != ~0))
            {
              hash0 = vnet_buffer (b0)->l2_classify.hash;
              t0 = pool_elt_at_index (vcm->tables, table_index0);
              e0 = vnet_classify_find_entry (t0, (u8 *) h0, hash0, now);
 
              if (e0)
                {
                  act0 = vnet_policer_police (vm, b0, e0->next_index,
                                              time_in_policer_periods,
                                              e0->opaque_index, false);
                  if (PREDICT_FALSE (act0 == QOS_ACTION_DROP))
                    {
                      next0 = POLICER_CLASSIFY_NEXT_INDEX_DROP;
                      b0->error = node->errors[POLICER_CLASSIFY_ERROR_DROP];
                    }
                  hits++;
                }
              else
                {
                  while (1)
                    {
                      if (PREDICT_TRUE (t0->next_table_index != ~0))
                        {
                          t0 = pool_elt_at_index (vcm->tables,
                                                  t0->next_table_index);
                        }
                      else
                        {
                          next0 = (t0->miss_next_index < n_next_nodes) ?
                            t0->miss_next_index : next0;
                          misses++;
                          break;
                        }
 
                      hash0 = vnet_classify_hash_packet (t0, (u8 *) h0);
                      e0 =
                        vnet_classify_find_entry (t0, (u8 *) h0, hash0, now);
                      if (e0)
                        {
                          act0 = vnet_policer_police (vm, b0, e0->next_index,
                                                      time_in_policer_periods,
                                                      e0->opaque_index, false);
                          if (PREDICT_FALSE (act0 == QOS_ACTION_DROP))
                            {
                              next0 = POLICER_CLASSIFY_NEXT_INDEX_DROP;
                              b0->error =
                                node->errors[POLICER_CLASSIFY_ERROR_DROP];
                            }
                          hits++;
                          chain_hits++;
                          break;
                        }
                    }
                }
            }
          if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
                             && (b0->flags & VLIB_BUFFER_IS_TRACED)))
            {
              policer_classify_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 = next0;
              t->table_index = t0 ? t0 - vcm->tables : ~0;
              t->offset = (e0 && t0) ? vnet_classify_get_offset (t0, e0) : ~0;
              t->policer_index = e0 ? e0->next_index : ~0;
            }
 
          /* 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,
                               POLICER_CLASSIFY_ERROR_MISS, misses);
  vlib_node_increment_counter (vm, node->node_index,
                               POLICER_CLASSIFY_ERROR_HIT, hits);
  vlib_node_increment_counter (vm, node->node_index,
                               POLICER_CLASSIFY_ERROR_CHAIN_HIT, chain_hits);
 
  return frame->n_vectors;
}
 
VLIB_NODE_FN (ip4_policer_classify_node) (vlib_main_t * vm,
                                          vlib_node_runtime_t * node,
                                          vlib_frame_t * frame)
{
  return policer_classify_inline (vm, node, frame,
                                  POLICER_CLASSIFY_TABLE_IP4);
}
 
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (ip4_policer_classify_node) = {
  .name = "ip4-policer-classify",
  .vector_size = sizeof (u32),
  .format_trace = format_policer_classify_trace,
  .n_errors = ARRAY_LEN(policer_classify_error_strings),
  .error_strings = policer_classify_error_strings,
  .n_next_nodes = POLICER_CLASSIFY_NEXT_INDEX_N_NEXT,
  .next_nodes = {
    [POLICER_CLASSIFY_NEXT_INDEX_DROP] = "error-drop",
  },
};
/* *INDENT-ON* */
 
VLIB_NODE_FN (ip6_policer_classify_node) (vlib_main_t * vm,
                                          vlib_node_runtime_t * node,
                                          vlib_frame_t * frame)
{
  return policer_classify_inline (vm, node, frame,
                                  POLICER_CLASSIFY_TABLE_IP6);
}
 
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (ip6_policer_classify_node) = {
  .name = "ip6-policer-classify",
  .vector_size = sizeof (u32),
  .format_trace = format_policer_classify_trace,
  .n_errors = ARRAY_LEN(policer_classify_error_strings),
  .error_strings = policer_classify_error_strings,
  .n_next_nodes = POLICER_CLASSIFY_NEXT_INDEX_N_NEXT,
  .next_nodes = {
    [POLICER_CLASSIFY_NEXT_INDEX_DROP] = "error-drop",
  },
};
/* *INDENT-ON* */
 
VLIB_NODE_FN (l2_policer_classify_node) (vlib_main_t * vm,
                                         vlib_node_runtime_t * node,
                                         vlib_frame_t * frame)
{
  return policer_classify_inline (vm, node, frame, POLICER_CLASSIFY_TABLE_L2);
}
 
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (l2_policer_classify_node) = {
  .name = "l2-policer-classify",
  .vector_size = sizeof (u32),
  .format_trace = format_policer_classify_trace,
  .n_errors = ARRAY_LEN (policer_classify_error_strings),
  .error_strings = policer_classify_error_strings,
  .n_next_nodes = POLICER_CLASSIFY_NEXT_INDEX_N_NEXT,
  .next_nodes = {
    [POLICER_CLASSIFY_NEXT_INDEX_DROP] = "error-drop",
  },
};
/* *INDENT-ON* */
 
#ifndef CLIB_MARCH_VARIANT
static clib_error_t *
policer_classify_init (vlib_main_t * vm)
{
  policer_classify_main_t *pcm = &policer_classify_main;
 
  pcm->vlib_main = vm;
  pcm->vnet_main = vnet_get_main ();
  pcm->vnet_classify_main = &vnet_classify_main;
 
  /* Initialize L2 feature next-node indexes */
  feat_bitmap_init_next_nodes (vm,
                               l2_policer_classify_node.index,
                               L2INPUT_N_FEAT,
                               l2input_get_feat_names (),
                               pcm->feat_next_node_index);
 
  return 0;
}
 
VLIB_INIT_FUNCTION (policer_classify_init);
#endif /* CLIB_MARCH_VARIANT */
 
/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */