a498dbf21a
For UDP encaps like VxLAN or Geneve, which can contain IP as payload, the UDP checksum was incorrect because when summing UDP payload (i.e. IP), we skipped the IPv4 checksum field, which should not be skipped in this case. Similar issue, for ICMP with IP as payload, ICMP checksum was incorrect. Essentially, any protocol which checksums over its payload and the payload contains protocols with checksum fields.
101 lines
2.7 KiB
C++
101 lines
2.7 KiB
C++
/*
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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 _IPV4_H
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#define _IPV4_H
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#include "abstractprotocol.h"
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#include "ip4.pb.h"
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#define IP_FLAG_MF 0x1
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#define IP_FLAG_DF 0x2
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#define IP_FLAG_UNUSED 0x4
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class Ip4Protocol : public AbstractProtocol
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{
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public:
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enum ip4field
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{
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ip4_ver = 0,
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ip4_hdrLen,
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ip4_tos,
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ip4_totLen,
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ip4_id,
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ip4_flags,
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ip4_fragOfs,
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ip4_ttl,
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ip4_proto,
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ip4_cksum,
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ip4_srcAddr,
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ip4_dstAddr,
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ip4_options,
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// Meta-fields
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ip4_isOverrideVer,
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ip4_isOverrideHdrLen,
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ip4_isOverrideTotLen,
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ip4_isOverrideProto,
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ip4_isOverrideCksum,
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ip4_srcAddrMode,
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ip4_srcAddrCount,
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ip4_srcAddrMask,
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ip4_dstAddrMode,
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ip4_dstAddrCount,
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ip4_dstAddrMask,
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ip4_fieldCount
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};
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Ip4Protocol(StreamBase *stream, AbstractProtocol *parent = 0);
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virtual ~Ip4Protocol();
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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 QString name() const;
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virtual QString shortName() const;
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virtual ProtocolIdType protocolIdType() const;
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virtual quint32 protocolId(ProtocolIdType type) const;
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virtual int fieldCount() const;
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virtual AbstractProtocol::FieldFlags fieldFlags(int index) 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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virtual int protocolFrameVariableCount() const;
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virtual quint32 protocolFrameCksum(int streamIndex = 0,
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CksumType cksumType = CksumIp, CksumFlags cksumFlags = 0) const;
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virtual bool hasErrors(QStringList *errors = nullptr) const;
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private:
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OstProto::Ip4 data;
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};
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#endif
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