inet::ieee80211::Fragmentation Class Reference

#include <Fragmentation.h>

Inheritance diagram for inet::ieee80211::Fragmentation:

Public Member Functions
virtual std::vector< Packet * > *	fragmentFrame (Packet *frame, const std::vector< int > &fragmentSizes) override
Public Member Functions inherited from inet::ieee80211::IFragmentation
virtual	~IFragmentation ()

Member Function Documentation

fragmentFrame()

std::vector< Packet * > * inet::ieee80211::Fragmentation::fragmentFrame ( Packet *  frame, const std::vector< int > &  fragmentSizes  )

overridevirtual

Implements inet::ieee80211::IFragmentation.

{
    EV_DEBUG << "Fragmenting " << *frame << " into " << fragmentSizes.size() << " fragments.\n";
    B offset = B(0);
    std::vector<Packet *> *fragments = new std::vector<Packet *>();
    const auto& frameHeader = frame->popAtFront<Ieee80211DataOrMgmtHeader>();
    frame->popAtBack<Ieee80211MacTrailer>(B(4));
    for (size_t i = 0; i < fragmentSizes.size(); i++) {
        bool lastFragment = i == fragmentSizes.size() - 1;
        std::string name = std::string(frame->getName()) + "-frag" + std::to_string(i);
        auto fragment = new Packet(name.c_str());
        B length = B(fragmentSizes.at(i));
        fragment->insertAtBack(frame->peekDataAt(offset, length));
        offset += length;
        const auto& fragmentHeader = staticPtrCast<Ieee80211DataOrMgmtHeader>(frameHeader->dupShared());
        fragmentHeader->setSequenceNumber(frameHeader->getSequenceNumber());
        fragmentHeader->setFragmentNumber(i);
        fragmentHeader->setMoreFragments(!lastFragment);
        fragment->insertAtFront(fragmentHeader);
        fragment->insertAtBack(makeShared<Ieee80211MacTrailer>());
        EV_TRACE << "Created " << *fragment << " fragment.\n";
        fragments->push_back(fragment);
    }
    delete frame;
    EV_TRACE << "Created " << fragments->size() << " fragments.\n";
    return fragments;
}

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

• Fragmentation.h
• Fragmentation.cc