SllLayer.h

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#pragma once
 
#include "MacAddress.h"
#include "Layer.h"
 
 
namespace pcpp
{
#pragma pack(push, 1)
    struct sll_header
    {
        uint16_t packet_type;
        uint16_t ARPHRD_type;
        uint16_t link_layer_addr_len;
        uint8_t link_layer_addr[8];
        uint16_t protocol_type;
    };
#pragma pack(pop)
    static_assert(sizeof(sll_header) == 16, "sll_header size is not 16 bytes");
 
    class SllLayer : public Layer
    {
    public:
        SllLayer(uint8_t* data, size_t dataLen, Packet* packet) : Layer(data, dataLen, nullptr, packet, SLL)
        {}
 
        SllLayer(uint16_t packetType, uint16_t ARPHRDType);
 
        ~SllLayer() override = default;
 
        sll_header* getSllHeader() const
        {
            return reinterpret_cast<sll_header*>(m_Data);
        }
 
        bool setLinkLayerAddr(uint8_t* addr, size_t addrLength);
 
        bool setMacAddressAsLinkLayer(const MacAddress& macAddr);
 
        void parseNextLayer() override;
 
        size_t getHeaderLen() const override
        {
            return sizeof(sll_header);
        }
 
        void computeCalculateFields() override;
 
        std::string toString() const override;
 
        OsiModelLayer getOsiModelLayer() const override
        {
            return OsiModelDataLinkLayer;
        }
 
        struct SerializedFields : Layer::SerializedFields
        {
            static std::vector<FieldDescriptor> all()
            {
                auto result = Layer::SerializedFields::all();
                std::initializer_list<FieldDescriptor> extra{ PacketType, ArpHeaderType, ProtocolType,
                                                              LinkLayerAddress };
                std::copy(extra.begin(), extra.end(), std::back_inserter(result));
                return result;
            }
 
            static const FieldDescriptor PacketType;
 
            static const FieldDescriptor ArpHeaderType;
 
            static const FieldDescriptor ProtocolType;
 
            static const FieldDescriptor LinkLayerAddress;
        };
 
    protected:
        void serializeLayer(ObjectScope& serializer) const override;
    };
 
}  // namespace pcpp