Ethernet.h

Go to the documentation of this file.

// Product  OpenNet


// TEST COVERAGE  2019-05-10  KMS - Martin Dubois, ing.

#pragma once

// Constant

#define ETHERNET_VLAN_TAG_ID_nh (0x0081)

#ifndef _OPEN_NET_NO_FUNCTION_

// Functions

OPEN_NET_GLOBAL unsigned char * Ethernet_Data( OPEN_NET_GLOBAL unsigned char * aBase, OPEN_NET_GLOBAL const OpenNet_PacketInfo * aPacketInfo)
{
    unsigned short lType_nh = *((OPEN_NET_GLOBAL unsigned short *)(aBase + aPacketInfo->mOffset_byte + 12));

    return (aBase + aPacketInfo->mOffset_byte + ((ETHERNET_VLAN_TAG_ID_nh == lType_nh) ? 18 : 14));
}

unsigned int Ethernet_DataSize(OPEN_NET_GLOBAL unsigned char * aBase, OPEN_NET_GLOBAL const OpenNet_PacketInfo * aPacketInfo)
{
    unsigned short lType_nh = *((OPEN_NET_GLOBAL unsigned short *)(aBase + aPacketInfo->mOffset_byte + 12));

    return (aPacketInfo->mSize_byte - ((ETHERNET_VLAN_TAG_ID_nh == lType_nh) ? 18 : 14));
}

OPEN_NET_GLOBAL unsigned short * Ethernet_Destination(OPEN_NET_GLOBAL unsigned char * aBase, OPEN_NET_GLOBAL const OpenNet_PacketInfo * aPacketInfo)
{
    return ((OPEN_NET_GLOBAL unsigned short *)(aBase + aPacketInfo->mOffset_byte + 0));
}

OPEN_NET_GLOBAL unsigned short * Ethernet_Source(OPEN_NET_GLOBAL unsigned char * aBase, OPEN_NET_GLOBAL const OpenNet_PacketInfo * aPacketInfo)
{
    return ((OPEN_NET_GLOBAL unsigned short *)(aBase + aPacketInfo->mOffset_byte + 6));
}

unsigned short Ethernet_Type(OPEN_NET_GLOBAL const unsigned char * aBase, OPEN_NET_GLOBAL const OpenNet_PacketInfo * aPacketInfo)
{
    unsigned short lType_nh = *((OPEN_NET_GLOBAL const unsigned short *)(aBase + aPacketInfo->mOffset_byte + 12));

    return (ETHERNET_VLAN_TAG_ID_nh == lType_nh) ? (*((OPEN_NET_GLOBAL const unsigned short *)(aBase + aPacketInfo->mOffset_byte + 16))) : lType_nh;
}

int Ethernet_Vlan(OPEN_NET_GLOBAL const unsigned char * aBase, OPEN_NET_GLOBAL const OpenNet_PacketInfo * aPacketInfo)
{
    unsigned short lType_nh = *((OPEN_NET_GLOBAL const unsigned short *)(aBase + aPacketInfo->mOffset_byte + 12));

    return (ETHERNET_VLAN_TAG_ID_nh == lType_nh);
}

unsigned short Ethernet_VlanTag(OPEN_NET_GLOBAL const unsigned char * aBase, OPEN_NET_GLOBAL const OpenNet_PacketInfo * aPacketInfo)
{
    unsigned short lType_nh = *((OPEN_NET_GLOBAL const unsigned short *)(aBase + aPacketInfo->mOffset_byte + 12));

    return (ETHERNET_VLAN_TAG_ID_nh == lType_nh) ? (*((OPEN_NET_GLOBAL const unsigned short *)(aBase + aPacketInfo->mOffset_byte + 14))) : 0;
}

#endif // ! _OPEN_NET_NO_FUNCTION_