inet::Ipv6ProtocolDissector Class Reference

#include <Ipv6ProtocolDissector.h>

Inheritance diagram for inet::Ipv6ProtocolDissector:

Public Member Functions
virtual void	dissect (Packet *packet, const Protocol *protocol, ICallback &callback) const override
	Dissects the packet according to the protocol implemented by this ProtocolDissector. More...

Member Function Documentation

dissect()

void inet::Ipv6ProtocolDissector::dissect ( Packet *  packet, const Protocol *  protocol, ICallback &  callback  ) const

overridevirtual

Dissects the packet according to the protocol implemented by this ProtocolDissector.

Implements inet::ProtocolDissector.

{
    auto trailerPopOffset = packet->getBackOffset();
    const auto& header = packet->popAtFront<Ipv6Header>();
    auto ipv6EndOffset = packet->getFrontOffset() + B(header->getPayloadLength());
    callback.startProtocolDataUnit(&Protocol::ipv6);
    bool incorrect = (ipv6EndOffset > trailerPopOffset);
    if (incorrect) {
        callback.markIncorrect();
        ipv6EndOffset = trailerPopOffset;
    }
    callback.visitChunk(header, &Protocol::ipv6);
    packet->setBackOffset(ipv6EndOffset);
    const Ipv6FragmentHeader *fh = dynamic_cast<const Ipv6FragmentHeader *>(header->findExtensionHeaderByType(IP_PROT_IPv6EXT_FRAGMENT));
    if (fh)
        callback.dissectPacket(packet, nullptr); // Fragment
    else
        callback.dissectPacket(packet, header->getProtocol());
    if (incorrect && packet->getDataLength() > b(0))
        callback.dissectPacket(packet, nullptr);
    ASSERT(packet->getDataLength() == B(0));
    packet->setFrontOffset(ipv6EndOffset);
    packet->setBackOffset(trailerPopOffset);
    callback.endProtocolDataUnit(&Protocol::ipv6);
}

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The documentation for this class was generated from the following files:

• Ipv6ProtocolDissector.h
• Ipv6ProtocolDissector.cc