socket_traits.hpp

#ifndef SOCKET_TRAITS_HPP_
#define SOCKET_TRAITS_HPP_
 
#include <vanetza/net/osi_layer.hpp>
#include <type_traits>
 
namespace vanetza
{
 
template<typename SOCKET>
struct socket_layers
{
    static const OsiLayer min = SOCKET::min_layer;
    static const OsiLayer max = SOCKET::max_layer;
 
    static_assert(min <= max, "Corrupt layer ordering");
};
 
namespace pdu_tags
{
 
struct pdu_tag {};
struct empty_pdu_tag : public pdu_tag {};
 
struct phy_tag : public pdu_tag {};
struct mk2_tag : public phy_tag {};
 
struct mac_tag : public pdu_tag {};
struct ethernet_tag : public mac_tag {};
 
} // namespace pdu_tags
 
template<typename SOCKET, OsiLayer LAYER>
struct socket_layer_pdu
{
    typedef pdu_tags::empty_pdu_tag tag;
};
 
template<OsiLayer LAYER, typename TAG, class SOCKET>
bool constexpr pdu_match(const SOCKET&)
{
    return std::is_same<TAG, typename socket_layer_pdu<SOCKET, LAYER>::tag>::value;
}
 
} // namespace vanetza
 
#endif // SOCKET_TRAITS_HPP_