text: /* Copyright (c) 2016-2017, Rafael Almeida <rlca at dcc dot ufmg dot br>
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *
   *   * Redistributions of source code must retain the above copyright notice,
   *     this list of conditions and the following disclaimer.
   *   * Redistributions in binary form must reproduce the above copyright
   *     notice, this list of conditions and the following disclaimer in the
   *     documentation and/or other materials provided with the distribution.
   *   * Neither the name of mtraceroute nor the names of its contributors may
   *     be used to endorse or promote products derived from this software
   *     without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   * POSSIBILITY OF SUCH DAMAGE.
   */
  
  #ifndef __MT_H__
  #define __MT_H__
  
  #include <time.h>
  #include <net/if.h>
  #include <pcap.h>
  
  #include "list.h"
  #include "probe.h"
  #include "route.h"
  
  #define MT_PCAP_SNAPLEN 1518
  #define MT_PCAP_PROMISC 0
  #define MT_PCAP_MS      20
  
  struct mt {
      struct list *interfaces;
      struct list *neighbors;
      struct list *routes;
  
      int retries;
      int probe_timeout;
      struct timespec send_wait;
  
      // Statistics
      int probes_count;
      struct timespec init_time;
      struct timespec first_probe_time;
      struct timespec last_probe_time;
  };
  
  struct interface {
      int if_index;
      char if_name[IF_NAMESIZE];
      struct addr *hw_addr;
      struct link *link;
      struct list *probes;
      pcap_t *pcap_handle;
  };
  
  struct neighbor {
      int if_index;
      struct addr *ip_addr;
      struct addr *hw_addr;
  };
  
  struct probe *mt_send(struct mt *a, int if_index, const uint8_t *buf, uint32_t len, match_fn fn);
  void mt_wait(struct mt *a, int if_index);
  struct route *mt_get_route(struct mt *a, const struct addr *dst);
  struct interface *mt_get_interface(struct mt *a, int if_index);
  struct neighbor *mt_get_neighbor(struct mt *a, const struct addr *dst, int if_index);
  
  #endif // __MT_H__
  