/*
 * Copyright (c) 2016,2020 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 <plugins/adl/adl.h>
#include <vnet/fib/ip4_fib.h>
#include <vnet/dpo/load_balance.h>

typedef struct {
  u32 next_index;
  u32 sw_if_index;
} ip4_adl_allowlist_trace_t;

/* packet trace format function */
static u8 * format_ip4_adl_allowlist_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 *);
  ip4_adl_allowlist_trace_t * t = va_arg (*args, ip4_adl_allowlist_trace_t *);

  s = format (s, "IP4_ADL_ALLOWLIST: sw_if_index %d, next index %d",
              t->sw_if_index, t->next_index);
  return s;
}

#define foreach_ip4_adl_allowlist_error         \
_(ALLOWED, "ip4 allowlist allowed")             \
_(DROPPED, "ip4 allowlist dropped")

typedef enum {
#define _(sym,str) IP4_ADL_ALLOWLIST_ERROR_##sym,
  foreach_ip4_adl_allowlist_error
#undef _
  IP4_ADL_ALLOWLIST_N_ERROR,
} ip4_adl_allowlist_error_t;

static char * ip4_adl_allowlist_error_strings[] = {
#define _(sym,string) string,
  foreach_ip4_adl_allowlist_error
#undef _
};

VLIB_NODE_FN (ip4_adl_allowlist_node) (vlib_main_t * vm,
		  vlib_node_runtime_t * node,
		  vlib_frame_t * frame)
{
  u32 n_left_from, * from, * to_next;
  adl_feature_type_t next_index;
  adl_main_t *cm = &adl_main;
  vlib_combined_counter_main_t * vcm = &load_balance_main.lbm_via_counters;
  u32 thread_index = vm->thread_index;
  u32 allowed_packets;

  from = vlib_frame_vector_args (frame);
  n_left_from = frame->n_vectors;
  allowed_packets = n_left_from;
  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;
          ip4_header_t * ip0, * ip1;
          adl_config_main_t * ccm0, * ccm1;</