A Discrete-Event Network Simulator
API
rip-helper.cc
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2016 Universita' di Firenze, Italy
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: Tommaso Pecorella <tommaso.pecorella@unifi.it>
19  */
20 
21 #include "ns3/node.h"
22 #include "ns3/node-list.h"
23 #include "ns3/ipv4-list-routing.h"
24 #include "ns3/rip.h"
25 #include "rip-helper.h"
26 
27 namespace ns3 {
28 
30 {
31  m_factory.SetTypeId ("ns3::Rip");
32 }
33 
35  : m_factory (o.m_factory)
36 {
39 }
40 
42 {
43  m_interfaceExclusions.clear ();
44  m_interfaceMetrics.clear ();
45 }
46 
47 RipHelper*
48 RipHelper::Copy (void) const
49 {
50  return new RipHelper (*this);
51 }
52 
55 {
56  Ptr<Rip> rip = m_factory.Create<Rip> ();
57 
58  std::map<Ptr<Node>, std::set<uint32_t> >::const_iterator it = m_interfaceExclusions.find (node);
59 
60  if(it != m_interfaceExclusions.end ())
61  {
62  rip->SetInterfaceExclusions (it->second);
63  }
64 
65  std::map< Ptr<Node>, std::map<uint32_t, uint8_t> >::const_iterator iter = m_interfaceMetrics.find (node);
66 
67  if(iter != m_interfaceMetrics.end ())
68  {
69  std::map<uint32_t, uint8_t>::const_iterator subiter;
70  for (subiter = iter->second.begin (); subiter != iter->second.end (); subiter++)
71  {
72  rip->SetInterfaceMetric (subiter->first, subiter->second);
73  }
74  }
75 
76  node->AggregateObject (rip);
77  return rip;
78 }
79 
80 void
81 RipHelper::Set (std::string name, const AttributeValue &value)
82 {
83  m_factory.Set (name, value);
84 }
85 
86 
87 int64_t
89 {
90  int64_t currentStream = stream;
91  Ptr<Node> node;
92  for (NodeContainer::Iterator i = c.Begin (); i != c.End (); ++i)
93  {
94  node = (*i);
95  Ptr<Ipv4> ipv4 = node->GetObject<Ipv4> ();
96  NS_ASSERT_MSG (ipv4, "Ipv4 not installed on node");
97  Ptr<Ipv4RoutingProtocol> proto = ipv4->GetRoutingProtocol ();
98  NS_ASSERT_MSG (proto, "Ipv4 routing not installed on node");
99  Ptr<Rip> rip = DynamicCast<Rip> (proto);
100  if (rip)
101  {
102  currentStream += rip->AssignStreams (currentStream);
103  continue;
104  }
105  // RIP may also be in a list
106  Ptr<Ipv4ListRouting> list = DynamicCast<Ipv4ListRouting> (proto);
107  if (list)
108  {
109  int16_t priority;
110  Ptr<Ipv4RoutingProtocol> listProto;
111  Ptr<Rip> listRip;
112  for (uint32_t i = 0; i < list->GetNRoutingProtocols (); i++)
113  {
114  listProto = list->GetRoutingProtocol (i, priority);
115  listRip = DynamicCast<Rip> (listProto);
116  if (listRip)
117  {
118  currentStream += listRip->AssignStreams (currentStream);
119  break;
120  }
121  }
122  }
123  }
124  return (currentStream - stream);
125 }
126 
127 void RipHelper::SetDefaultRouter (Ptr<Node> node, Ipv4Address nextHop, uint32_t interface)
128 {
129  Ptr<Ipv4> ipv4 = node->GetObject<Ipv4> ();
130  NS_ASSERT_MSG (ipv4, "Ipv4 not installed on node");
131  Ptr<Ipv4RoutingProtocol> proto = ipv4->GetRoutingProtocol ();
132  NS_ASSERT_MSG (proto, "Ipv4 routing not installed on node");
133  Ptr<Rip> rip = DynamicCast<Rip> (proto);
134  if (rip)
135  {
136  rip->AddDefaultRouteTo (nextHop, interface);
137  }
138  // RIP may also be in a list
139  Ptr<Ipv4ListRouting> list = DynamicCast<Ipv4ListRouting> (proto);
140  if (list)
141  {
142  int16_t priority;
143  Ptr<Ipv4RoutingProtocol> listProto;
144  Ptr<Rip> listRip;
145  for (uint32_t i = 0; i < list->GetNRoutingProtocols (); i++)
146  {
147  listProto = list->GetRoutingProtocol (i, priority);
148  listRip = DynamicCast<Rip> (listProto);
149  if (listRip)
150  {
151  listRip->AddDefaultRouteTo (nextHop, interface);
152  break;
153  }
154  }
155  }
156 }
157 
158 void
159 RipHelper::ExcludeInterface (Ptr<Node> node, uint32_t interface)
160 {
161  std::map< Ptr<Node>, std::set<uint32_t> >::iterator it = m_interfaceExclusions.find (node);
162 
163  if (it == m_interfaceExclusions.end ())
164  {
165  std::set<uint32_t> interfaces;
166  interfaces.insert (interface);
167 
168  m_interfaceExclusions.insert (std::make_pair (node, interfaces));
169  }
170  else
171  {
172  it->second.insert (interface);
173  }
174 }
175 
176 void RipHelper::SetInterfaceMetric (Ptr<Node> node, uint32_t interface, uint8_t metric)
177 {
178  m_interfaceMetrics[node][interface] = metric;
179 }
180 
181 }
182 
std::map< Ptr< Node >, std::set< uint32_t > > m_interfaceExclusions
Interface Exclusion set.
Definition: rip-helper.h:146
Smart pointer class similar to boost::intrusive_ptr.
Definition: ptr.h:73
std::vector< Ptr< Node > >::const_iterator Iterator
Node container iterator.
NS_ASSERT_MSG(false, "Ipv4AddressGenerator::MaskToIndex(): Impossible")
void ExcludeInterface(Ptr< Node > node, uint32_t interface)
Exclude an interface from RIP protocol.
Definition: rip-helper.cc:159
Hold a value for an Attribute.
Definition: attribute.h:68
void AggregateObject(Ptr< Object > other)
Aggregate two Objects together.
Definition: object.cc:252
void SetTypeId(TypeId tid)
Set the TypeId of the Objects to be created by this factory.
Helper class that adds RIP routing to nodes.
Definition: rip-helper.h:40
void SetDefaultRouter(Ptr< Node > node, Ipv4Address nextHop, uint32_t interface)
Install a default route in the node.
Definition: rip-helper.cc:127
Iterator End(void) const
Get an iterator which indicates past-the-last Node in the container.
ObjectFactory m_factory
Object Factory.
Definition: rip-helper.h:144
void Set(std::string name, const AttributeValue &value)
Definition: rip-helper.cc:81
Ptr< Object > Create(void) const
Create an Object instance of the configured TypeId.
RIP Routing Protocol, defined in RFC 2453.
Definition: rip.h:173
std::map< Ptr< Node >, std::map< uint32_t, uint8_t > > m_interfaceMetrics
Interface Metric set.
Definition: rip-helper.h:147
#define list
Access to the IPv4 forwarding table, interfaces, and configuration.
Definition: ipv4.h:76
Ptr< T > GetObject(void) const
Get a pointer to the requested aggregated Object.
Definition: object.h:459
virtual ~RipHelper()
Definition: rip-helper.cc:41
Every class exported by the ns3 library is enclosed in the ns3 namespace.
keep track of a set of node pointers.
void Set(std::string name, const AttributeValue &value)
Set an attribute to be set during construction.
void SetInterfaceMetric(Ptr< Node > node, uint32_t interface, uint8_t metric)
Set a metric for an interface.
Definition: rip-helper.cc:176
virtual Ptr< Ipv4RoutingProtocol > Create(Ptr< Node > node) const
Definition: rip-helper.cc:54
Ipv4 addresses are stored in host order in this class.
Definition: ipv4-address.h:40
interfaces
Definition: first.py:41
int64_t AssignStreams(NodeContainer c, int64_t stream)
Assign a fixed random variable stream number to the random variables used by this model...
Definition: rip-helper.cc:88
RipHelper * Copy(void) const
Definition: rip-helper.cc:48
Iterator Begin(void) const
Get an iterator which refers to the first Node in the container.