A Discrete-Event Network Simulator
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dsdv-packet.cc
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2010 Hemanth Narra
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License version 2 as
7  * published by the Free Software Foundation;
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17  *
18  * Author: Hemanth Narra <hemanth@ittc.ku.com>
19  *
20  * James P.G. Sterbenz <jpgs@ittc.ku.edu>, director
21  * ResiliNets Research Group http://wiki.ittc.ku.edu/resilinets
22  * Information and Telecommunication Technology Center (ITTC)
23  * and Department of Electrical Engineering and Computer Science
24  * The University of Kansas Lawrence, KS USA.
25  *
26  * Work supported in part by NSF FIND (Future Internet Design) Program
27  * under grant CNS-0626918 (Postmodern Internet Architecture),
28  * NSF grant CNS-1050226 (Multilayer Network Resilience Analysis and Experimentation on GENI),
29  * US Department of Defense (DoD), and ITTC at The University of Kansas.
30  */
31 #include "dsdv-packet.h"
32 #include "ns3/address-utils.h"
33 #include "ns3/packet.h"
34 
35 namespace ns3 {
36 namespace dsdv {
37 NS_OBJECT_ENSURE_REGISTERED (DsdvHeader);
38 DsdvHeader::DsdvHeader (Ipv4Address dst, uint32_t hopCount, uint32_t dstSeqNo)
39  : m_dst (dst),
40  m_hopCount (hopCount),
41  m_dstSeqNo (dstSeqNo)
42 {
43 }
44 
45 DsdvHeader::~DsdvHeader ()
46 {
47 }
48 
49 TypeId
50 DsdvHeader::GetTypeId (void)
51 {
52  static TypeId tid = TypeId ("ns3::dsdv::DsdvHeader")
53  .SetParent<Header> ()
54  .AddConstructor<DsdvHeader> ();
55  return tid;
56 }
57 
58 TypeId
59 DsdvHeader::GetInstanceTypeId () const
60 {
61  return GetTypeId ();
62 }
63 
64 uint32_t
65 DsdvHeader::GetSerializedSize () const
66 {
67  return 12;
68 }
69 
70 void
71 DsdvHeader::Serialize (Buffer::Iterator i) const
72 {
73  WriteTo (i, m_dst);
74  i.WriteHtonU32 (m_hopCount);
75  i.WriteHtonU32 (m_dstSeqNo);
76 
77 }
78 
79 uint32_t
80 DsdvHeader::Deserialize (Buffer::Iterator start)
81 {
82  Buffer::Iterator i = start;
83 
84  ReadFrom (i, m_dst);
85  m_hopCount = i.ReadNtohU32 ();
86  m_dstSeqNo = i.ReadNtohU32 ();
87 
88  uint32_t dist = i.GetDistanceFrom (start);
89  NS_ASSERT (dist == GetSerializedSize ());
90  return dist;
91 }
92 
93 void
94 DsdvHeader::Print (std::ostream &os) const
95 {
96  os << "DestinationIpv4: " << m_dst
97  << " Hopcount: " << m_hopCount
98  << " SequenceNumber: " << m_dstSeqNo;
99 }
100 }
101 }