99 lines
2.6 KiB
C
99 lines
2.6 KiB
C
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/*
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Copyright (C) 2010 Srivats P.
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This file is part of "Ostinato"
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This is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>
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*/
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#ifndef _IGMP_H
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#define _IGMP_H
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#include "gmp.h"
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#include "igmp.pb.h"
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// IGMP uses the same msg type value for 'Query' messages across
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// versions despite the fields being different. To distinguish
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// Query messages of different versions, we use an additional
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// upper byte
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enum IgmpMsgType
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{
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kIgmpV1Query = 0x11,
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kIgmpV1Report = 0x12,
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kIgmpV2Query = 0xFF11,
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kIgmpV2Report = 0x16,
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kIgmpV2Leave = 0x17,
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kIgmpV3Query = 0xFE11,
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kIgmpV3Report = 0x22,
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};
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class IgmpProtocol : public GmpProtocol
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{
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public:
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IgmpProtocol(StreamBase *stream, AbstractProtocol *parent = 0);
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virtual ~IgmpProtocol();
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static AbstractProtocol* createInstance(StreamBase *stream,
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AbstractProtocol *parent = 0);
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virtual quint32 protocolNumber() const;
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virtual void protoDataCopyInto(OstProto::Protocol &protocol) const;
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virtual void protoDataCopyFrom(const OstProto::Protocol &protocol);
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virtual quint32 protocolId(ProtocolIdType type) const;
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virtual QString name() const;
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virtual QString shortName() const;
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virtual QVariant fieldData(int index, FieldAttrib attrib,
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int streamIndex = 0) const;
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virtual bool setFieldData(int index, const QVariant &value,
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FieldAttrib attrib = FieldValue);
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protected:
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virtual bool isSsmReport() const;
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virtual bool isQuery() const;
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virtual bool isSsmQuery() const;
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virtual quint16 checksum(int streamIndex) const;
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private:
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int mrc(int value) const;
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};
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inline bool IgmpProtocol::isSsmReport() const
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{
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return (msgType() == kIgmpV3Report);
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}
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inline bool IgmpProtocol::isQuery() const
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{
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return ((msgType() == kIgmpV1Query)
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|| (msgType() == kIgmpV2Query)
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|| (msgType() == kIgmpV3Query));
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}
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inline bool IgmpProtocol::isSsmQuery() const
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{
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return (msgType() == kIgmpV3Query);
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}
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inline int IgmpProtocol::mrc(int value) const
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{
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return quint8(value); // TODO: if value > 128, convert to mantissa/exp form
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}
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#endif
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