inet::ieee80211::Fragmentation Class Reference

#include <Fragmentation.h>

Inheritance diagram for inet::ieee80211::Fragmentation:

Public Member Functions
virtual std::vector< Ieee80211DataOrMgmtFrame * > *	fragmentFrame (Ieee80211DataOrMgmtFrame *frame, const std::vector< int > &fragmentSizes) override
Public Member Functions inherited from inet::ieee80211::IFragmentation
virtual	~IFragmentation ()

Member Function Documentation

std::vector< Ieee80211DataOrMgmtFrame * > * inet::ieee80211::Fragmentation::fragmentFrame ( Ieee80211DataOrMgmtFrame *  frame, const std::vector< int > &  fragmentSizes  )

overridevirtual

Implements inet::ieee80211::IFragmentation.

{
    // Notes:
    // 1. only the MSDU is carried in the fragments (i.e. only frame's payload, without the 802.11 header)
    // 3. for convenience, this implementation sends the original frame encapsulated in the last fragment, all other fragments are dummies with no data
    //
    std::vector<Ieee80211DataOrMgmtFrame *> *fragments = new std::vector<Ieee80211DataOrMgmtFrame *>();

    cPacket *payload = frame->decapsulate();
    Ieee80211DataOrMgmtFrame *fragmentHeader = frame->dup();
    frame->encapsulate(payload); // restore original state

    for (int i = 0; i < (int)fragmentSizes.size(); i++) {
        bool lastFragment = i == (int)fragmentSizes.size() - 1;
        Ieee80211DataOrMgmtFrame *fragment = fragmentHeader->dup();
        fragment->setFragmentNumber(i);
        fragment->setMoreFragments(!lastFragment);
        if (lastFragment)
            fragment->encapsulate(frame); // TODO: khm, 802.11 in 802.11, convenient but wrong
        fragment->setByteLength(fragmentSizes.at(i));
        fragments->push_back(fragment);
    }
    delete fragmentHeader;
    return fragments;
}

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

• Fragmentation.h
• Fragmentation.cc