/usr/include/ns3.17/ns3/dsr-gratuitous-reply-table.h is in libns3-dev 3.17+dfsg-1build1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 | /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
* Copyright (c) 2011 Yufei Cheng
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation;
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Yufei Cheng <yfcheng@ittc.ku.edu>
*
* James P.G. Sterbenz <jpgs@ittc.ku.edu>, director
* ResiliNets Research Group http://wiki.ittc.ku.edu/resilinets
* Information and Telecommunication Technology Center (ITTC)
* and Department of Electrical Engineering and Computer Science
* The University of Kansas Lawrence, KS USA.
*
* Work supported in part by NSF FIND (Future Internet Design) Program
* under grant CNS-0626918 (Postmodern Internet Architecture),
* NSF grant CNS-1050226 (Multilayer Network Resilience Analysis and Experimentation on GENI),
* US Department of Defense (DoD), and ITTC at The University of Kansas.
*/
#ifndef DSR_GRATUITOUS_REPLY_TABLE_H
#define DSR_GRATUITOUS_REPLY_TABLE_H
#include "ns3/simulator.h"
#include "ns3/timer.h"
#include "ns3/ipv4-address.h"
#include "ns3/callback.h"
#include <vector>
namespace ns3 {
namespace dsr {
/*
* The gratuitous table entries, it maintains the already sent gratuitous route reply entries.
* When the node "promiscuously" received a packet destined for other nodes, and inferred a shorter
* route for the data packet, it will construct a route reply and send back to the source
*/
struct GraReplyEntry
{
Ipv4Address m_replyTo;
Ipv4Address m_hearFrom;
Time m_gratReplyHoldoff;
GraReplyEntry (Ipv4Address t, Ipv4Address f, Time h)
: m_replyTo (t),
m_hearFrom (f),
m_gratReplyHoldoff (h)
{
}
};
/**
* \ingroup dsr
* \brief maintain the gratuitous reply
*/
class GraReply : public Object
{
public:
// / c-tor
/**
* \brief Get the type identificator.
* \return type identificator
*/
static TypeId GetTypeId ();
/**
* \brief Constructor.
*/
GraReply ();
/**
* \brief Destructor.
*/
virtual ~GraReply ();
// / Set the gratuitous reply table size
void SetGraTableSize (uint32_t g)
{
GraReplyTableSize = g;
}
// / Get the gratuitous reply table size
uint32_t GetGraTableSize () const
{
return GraReplyTableSize;
}
// / Add a new gratuitous reply entry
bool AddEntry (GraReplyEntry & graTableEntry);
// / Update the route entry if found, create a new one if not
bool FindAndUpdate (Ipv4Address replyTo, Ipv4Address replyFrom, Time gratReplyHoldoff);
// / Remove all expired entries
void Purge ();
// / Remove all entries
void Clear ()
{
m_graReply.clear ();
}
private:
// / Vector of entries
std::vector<GraReplyEntry> m_graReply;
// / The max # of gratuitous reply entries to hold
uint32_t GraReplyTableSize;
// / Check if the entry is expired or not
struct IsExpired
{
bool operator() (const struct GraReplyEntry & b) const
{
return (b.m_gratReplyHoldoff < Simulator::Now ());
}
};
};
} // namespace dsr
} // namespace ns3
#endif /* DSR_GRATUITOUS_REPLY_TABLE_H */
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