A Discrete-Event Network Simulator
API
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 
38 NS_OBJECT_ENSURE_REGISTERED (DsdvHeader);
39 
40 DsdvHeader::DsdvHeader (Ipv4Address dst, uint32_t hopCount, uint32_t dstSeqNo)
41  : m_dst (dst),
42  m_hopCount (hopCount),
43  m_dstSeqNo (dstSeqNo)
44 {
45 }
46 
48 {
49 }
50 
51 TypeId
53 {
54  static TypeId tid = TypeId ("ns3::dsdv::DsdvHeader")
55  .SetParent<Header> ()
56  .SetGroupName ("Dsdv")
57  .AddConstructor<DsdvHeader> ();
58  return tid;
59 }
60 
61 TypeId
63 {
64  return GetTypeId ();
65 }
66 
67 uint32_t
69 {
70  return 12;
71 }
72 
73 void
75 {
76  WriteTo (i, m_dst);
79 
80 }
81 
82 uint32_t
84 {
86 
87  ReadFrom (i, m_dst);
88  m_hopCount = i.ReadNtohU32 ();
89  m_dstSeqNo = i.ReadNtohU32 ();
90 
91  uint32_t dist = i.GetDistanceFrom (start);
92  NS_ASSERT (dist == GetSerializedSize ());
93  return dist;
94 }
95 
96 void
97 DsdvHeader::Print (std::ostream &os) const
98 {
99  os << "DestinationIpv4: " << m_dst
100  << " Hopcount: " << m_hopCount
101  << " SequenceNumber: " << m_dstSeqNo;
102 }
103 }
104 }
Protocol header serialization and deserialization.
Definition: header.h:42
#define NS_OBJECT_ENSURE_REGISTERED(type)
Register an Object subclass with the TypeId system.
Definition: object-base.h:45
virtual TypeId GetInstanceTypeId(void) const
Get the most derived TypeId for this Object.
Definition: dsdv-packet.cc:62
void ReadFrom(Buffer::Iterator &i, Ipv4Address &ad)
Read an Ipv4Address from a Buffer.
def start()
Definition: core.py:1844
virtual uint32_t GetSerializedSize() const
Definition: dsdv-packet.cc:68
#define NS_ASSERT(condition)
At runtime, in debugging builds, if this condition is not true, the program prints the source file...
Definition: assert.h:67
void WriteTo(Buffer::Iterator &i, Ipv4Address ad)
Write an Ipv4Address to a Buffer.
uint32_t m_hopCount
Number of Hops.
Definition: dsdv-packet.h:137
uint32_t m_dstSeqNo
Destination Sequence Number.
Definition: dsdv-packet.h:138
uint32_t ReadNtohU32(void)
Definition: buffer.h:970
iterator in a Buffer instance
Definition: buffer.h:98
uint32_t GetDistanceFrom(Iterator const &o) const
Definition: buffer.cc:783
virtual void Print(std::ostream &os) const
Definition: dsdv-packet.cc:97
static TypeId GetTypeId(void)
Get the type ID.
Definition: dsdv-packet.cc:52
Every class exported by the ns3 library is enclosed in the ns3 namespace.
void WriteHtonU32(uint32_t data)
Definition: buffer.h:924
Ipv4 addresses are stored in host order in this class.
Definition: ipv4-address.h:40
Ipv4Address m_dst
Destination IP Address.
Definition: dsdv-packet.h:136
DSDV Update Packet Format
Definition: dsdv-packet.h:58
virtual void Serialize(Buffer::Iterator start) const
Definition: dsdv-packet.cc:74
a unique identifier for an interface.
Definition: type-id.h:58
TypeId SetParent(TypeId tid)
Set the parent TypeId.
Definition: type-id.cc:915
DsdvHeader(Ipv4Address dst=Ipv4Address(), uint32_t hopcount=0, uint32_t dstSeqNo=0)
Constructor.
Definition: dsdv-packet.cc:40
virtual uint32_t Deserialize(Buffer::Iterator start)
Definition: dsdv-packet.cc:83