commsignia_layer.hh

/*!
 * \file      udp_layer_factory.hh
 * \brief     Header file for ITS Commsignia port protocol layer factory.
 * \author    ETSI STF525
 * \copyright ETSI Copyright Notification
 *            No part may be reproduced except as authorized by written permission.
 *            The copyright and the foregoing restriction extend to reproduction in all media.
 *            All rights reserved.
 * \version   0.1
 */
#pragma once

#include "t_layer.hh"
#include "params.hh"

class OCTETSTRING; //! Forward declaration of TITAN class

/*!
 * \class commsignia_layer
 * \brief  This class provides description of ITS Commsignia port protocol layer
 */
class commsignia_layer : public layer {
  static constexpr unsigned char LL_ADDR_LENGTH = 6;
  static constexpr unsigned char LL_ORG_CODE_LENGTH = 3;
  
  /**
   * \struct C2P packet description
   */
  typedef struct {
    unsigned char u8_ver_type;
    unsigned int u32_tst_sec;
    unsigned int u32_tst_msec;
  } c2p_s_header_t;
  typedef struct {
    c2p_s_header_t s_header;
    unsigned char u8_primary_channel;
    unsigned char u8_secondary_channel;
    unsigned char u8_used_interface;
    unsigned char u8_data_rate;
    unsigned char u8_antenna;
    int s32_latitude;
    int s32_longitude;
    unsigned short u16_speed;
    unsigned short u16_heading;
    signed char s8_txp;
    signed char s8_tssi_ant_1;
    signed char s8_tssi_ant_2;
  } c2p_s_v1_tx_t;

  /**
   * \struct Injected data header
   */
  typedef struct {
    unsigned short frame_ctrl;
    unsigned short duration;
    unsigned char dst_addr[commsignia_layer::LL_ADDR_LENGTH];
    unsigned char src_addr[commsignia_layer::LL_ADDR_LENGTH];
    unsigned char bss_id[commsignia_layer::LL_ADDR_LENGTH];
    unsigned short fragment_seq_num;
  } __attribute__((__packed__)) c2p_802_11p_hdr;

  typedef unsigned short c2p_qos_ctrl;
  
  /**
   * \struct C2P/c2p_s_llc_hdr_t
   */
  typedef struct {
    unsigned char dsap;
    unsigned char ssap;
    unsigned char ctrl;
    unsigned char org_code[commsignia_layer::LL_ORG_CODE_LENGTH];
    unsigned short type;
  } __attribute__((__packed__)) c2p_llc_hdr;

  params _params;                       //! Layer parameters
  c2p_s_v1_tx_t _c2p_recv;              //! \todo
  c2p_802_11p_hdr _802_11p_hdr;         //! \todo
  c2p_llc_hdr _c2p_llc_hdr;             //! \todo
  std::vector<unsigned char> _mac_src;  //! Used to optimize filtering on source mac address in \see commsignia_layer::receive_data method
  std::vector<unsigned char> _eth_type; //! Used to optimize filtering on ethernet type in \see commsignia_layer::receive_data method

  //! Fixed header for packet injection
  static unsigned char _fixed_header[12];
  
public:
  //! \publicsection
   /*!
    * \brief Specialised constructor
    *        Create a new instance of the commsignia_layer class
    * \param[in] p_type \todo
    * \param[in] p_param \todo
    */
  commsignia_layer(const std::string & p_type, const std::string & param);
  /*!
   * \brief Default destructor
   * \remark If \see _reconnect_on_send is set to false, the disconnection is done by the destructor
   */
  virtual ~commsignia_layer() {};

  virtual void send_data(OCTETSTRING& data, params& params);
  virtual void receive_data(OCTETSTRING& data, params& info);
}; // End of class commsignia_layer