Msg File src/inet/linklayer/ethernet/EtherFrame.msg

Name	Type	Description
EthernetControlOpCode	enum	(no description)
EthernetMacHeader	class	Ethernet MAC header
EthernetControlFrame	class	Ethernet control frames used by the PAUSE protocol
EthernetPauseFrame	class	Ethernet frame used by the PAUSE protocol
EthernetPadding	class	(no description)
EthernetFcs	class	(no description)

Source code

//
// Copyright (C) 2003 Andras Varga; CTIE, Monash University, Australia
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program; if not, see <http://www.gnu.org/licenses/>.
//

import inet.common.INETDefs;
import inet.common.packet.chunk.Chunk;
import inet.linklayer.common.EtherType;
import inet.linklayer.common.FcsMode;
import inet.linklayer.common.Ieee802Ctrl;
import inet.linklayer.common.MacAddress;
import inet.linklayer.ieee8021q.Ieee8021qHeader;

cplusplus {{
#include "inet/linklayer/ethernet/Ethernet.h"
}}

namespace inet;

enum EthernetControlOpCode
{
    ETHERNET_CONTROL_PAUSE = 1;
}

enum SapCode;

//
// Ethernet MAC header
//
class EthernetMacHeader extends FieldsChunk
{
    chunkLength = B(ETHER_MAC_HEADER_BYTES);
    MacAddress dest;
    MacAddress src;
    Ieee8021qHeader *cTag @owned;
    Ieee8021qHeader *sTag @owned;
    int typeOrLength;
}

cplusplus {{
    inline bool isEth2Header(const EthernetMacHeader& hdr)  { return isEth2Type(hdr.getTypeOrLength()); }  // typeOrLength is type
    inline bool isIeee8023Header(const EthernetMacHeader& hdr)  { return isIeee8023Length(hdr.getTypeOrLength()); }  // typeOrLength is length
}}

//
//
// Ethernet control frames used by the PAUSE protocol
//
class EthernetControlFrame extends FieldsChunk
{
//    EthernetHeader.etherType = ETHERTYPE_FLOW_CONTROL;
    int opCode = -1;
}

//
// Ethernet frame used by the PAUSE protocol
//
class EthernetPauseFrame extends EthernetControlFrame
{
    chunkLength = ETHER_PAUSE_COMMAND_BYTES;
    opCode = ETHERNET_CONTROL_PAUSE;
    int pauseTime; // in 512 bit-time units
}

class EthernetPadding extends FieldsChunk
{
}

class EthernetFcs extends FieldsChunk
{
    chunkLength = ETHER_FCS_BYTES;
    uint32_t fcs;
    FcsMode fcsMode = FCS_MODE_UNDEFINED;
}

cplusplus(EthernetFcs) {{
    EthernetFcs(FcsMode _fcsMode) : EthernetFcs() { fcsMode = _fcsMode; }
}}