include/wipal/phy/rtap_header.hh

/*
 * WiPal - A library and a set of tools to manipulate wireless traces.
 * Copyright (C) 2007, 2008, 2009  Universite Pierre et Marie Curie - Paris 6
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA  02110-1301  USA
 *
 * Author: Thomas Claveirole <thomas.claveirole@lip6.fr>
 */
#ifndef RTAP_HEADER_HH_
# define RTAP_HEADER_HH_

# include <wipal/phy/phy.hh>
# include <wipal/tool/microseconds.hh>

namespace wpl
{

  // Forward declarations.
  namespace rtap
  {
    struct      header;
  }

  // Virtual types.
  namespace tool
  {

    template <>
    struct types<rtap::header>
    {
      typedef phy::uint64_time<>        time_type;
    };

  } // End of namespace wpl::tool.

  namespace rtap
  {

    struct header: public phy::header<rtap::header>
    {
      typedef rtap::header                      exact_type;
      typedef WP_TYPE_(time_type, exact_type)   time_type;

      size_t    len_impl(size_t, bool) const;
      time_type time_get_impl(bool) const;
      void      time_set_impl(const time_type&, bool);

      template <class S1, class S2>
      static bool
      eq_time(const pkt::packet<S1>&            lhs,
              const pkt::packet<S2>&            rhs,
              const unsigned                    prec,
              const tool::end::endianness       phy_end);

      const void*
      first_field(size_t caplen) const;

      void*
      first_field(size_t caplen);

      uint64_t
      tsft_get(size_t caplen) const;


      enum field
        {
          tsft                  = 0x00000001,
          flags                 = 0x00000002,
          rate                  = 0x00000004,
          channel               = 0x00000008,
          fhss                  = 0x00000010,
          dbm_antsignal         = 0x00000020,
          dbm_antnoise          = 0x00000040,
          lock_quality          = 0x00000080,
          tx_attenuation        = 0x00000100,
          db_tx_attenuation     = 0x00000200,
          dbm_tx_power          = 0x00000400,
          antenna               = 0x00000800,
          db_antsignal          = 0x00001000,
          db_antnoise           = 0x00002000,
          ext                   = 0x10000000,
        };

      uint8_t   it_version;     
      uint8_t   it_pad;         
      uint16_t  it_len;         
      uint32_t  it_present;     
    } __attribute__((__packed__));

  } // End of namespace wpl::rtap.

} // End of namespace wpl.

# include "rtap_header.hxx"

#endif // ! RTAP_HEADER_HH_

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