EthLayer.h

Go to the documentation of this file.

#ifndef PACKETPP_ETH_LAYER
#define PACKETPP_ETH_LAYER

#include "Layer.h"
#include "MacAddress.h"


namespace pcpp
{

#pragma pack(push, 1)
    struct ether_header {
        uint8_t dstMac[6];
        uint8_t srcMac[6];
        uint16_t etherType;
    };
#pragma pack(pop)

    /* Ethernet protocol ID's */

#define PCPP_ETHERTYPE_IP        0x0800

#define PCPP_ETHERTYPE_ARP       0x0806

#define PCPP_ETHERTYPE_ETHBRIDGE 0x6558

#define PCPP_ETHERTYPE_REVARP    0x8035

#define PCPP_ETHERTYPE_AT        0x809B

#define PCPP_ETHERTYPE_AARP      0x80F3

#define PCPP_ETHERTYPE_VLAN      0x8100

#define PCPP_ETHERTYPE_IPX       0x8137

#define PCPP_ETHERTYPE_IPV6      0x86dd

#define PCPP_ETHERTYPE_LOOPBACK  0x9000

#define PCPP_ETHERTYPE_PPPOED    0x8863

#define PCPP_ETHERTYPE_PPPOES    0x8864

#define PCPP_ETHERTYPE_MPLS      0x8847

#define PCPP_ETHERTYPE_PPP       0x880B

#define PCPP_ETHERTYPE_ROCEV1    0x8915


    class EthLayer : public Layer
    {
    public:
        EthLayer(uint8_t* data, size_t dataLen, Packet* packet) : Layer(data, dataLen, NULL, packet) { m_Protocol = Ethernet; }

        EthLayer(uint8_t* data, size_t dataLen, Layer* prevLayer, Packet* packet) : Layer(data, dataLen, prevLayer, packet) { m_Protocol = Ethernet; }

        EthLayer(const MacAddress& sourceMac, const MacAddress& destMac, uint16_t etherType = 0);

        ~EthLayer() {}

        ether_header* getEthHeader() const { return (ether_header*)m_Data; }

        MacAddress getSourceMac() const { return MacAddress(getEthHeader()->srcMac); }

        void setSourceMac(const MacAddress& sourceMac) { sourceMac.copyTo(getEthHeader()->srcMac); }

        MacAddress getDestMac() const { return MacAddress(getEthHeader()->dstMac); }

        void setDestMac(const MacAddress& destMac) { destMac.copyTo(getEthHeader()->dstMac); }

        // implement abstract methods

        void parseNextLayer();

        size_t getHeaderLen() const { return sizeof(ether_header); }

        void computeCalculateFields();

        std::string toString() const;

        OsiModelLayer getOsiModelLayer() const { return OsiModelDataLinkLayer; }

        static bool isDataValid(const uint8_t* data, size_t dataLen);
    };

} // namespace pcpp

#endif /* PACKETPP_ETH_LAYER */