ethernet_interface_info.h

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#ifndef ETHERNET_INTERFACE_INFO_H
#define ETHERNET_INTERFACE_INFO_H

#include <string>
#include <stdint.h>

#include <diagnostic_updater/DiagnosticStatusWrapper.h>

struct EthtoolStats
{
  EthtoolStats();
  uint64_t rx_errors_;
  uint64_t rx_crc_errors_;
  uint64_t rx_frame_errors_;
  uint64_t rx_align_errors_;

  EthtoolStats& operator-=(const EthtoolStats& right);
};

struct InterfaceState
{
  InterfaceState() :
    up_(false), running_(false)
  {
  }
  bool up_;
  bool running_;
};

class EthernetInterfaceInfo
{
public:
  EthernetInterfaceInfo();
  void initialize(const std::string &interface);
  ~EthernetInterfaceInfo();

  void publishDiagnostics(diagnostic_updater::DiagnosticStatusWrapper &d);

protected:
  bool getEthtoolStats(EthtoolStats &stats);

  bool getInterfaceState(InterfaceState &state);

  std::string interface_;
  int sock_;
  unsigned n_stats_;
  char *ethtool_stats_buf_;

  // Indexes of statistics that come from ethtool ioctl
  // An index of -1 indicates that statistic is not available from network driver
  int rx_error_index_;
  int rx_crc_error_index_;
  int rx_frame_error_index_;
  int rx_align_error_index_;

  unsigned lost_link_count_;

  EthtoolStats orig_stats_;
  InterfaceState last_state_;
};

#endif //ETHERNET_INTERFACE_INFO_H