NS-3 based Named Data Networking (NDN) simulator
ndnSIM: NDN, CCN, CCNx, content centric networks
API Documentation
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Groups Pages
ndn-link-control-helper.cc
1 /* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2013 University of California, Los Angeles
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: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
19  * : Saran Tarnoi <saran.tarnoi@gmail.com>
20  */
21 
22 #include "ndn-link-control-helper.h"
23 
24 #include "ns3/assert.h"
25 #include "ns3/names.h"
26 #include "ns3/point-to-point-net-device.h"
27 #include "ns3/point-to-point-channel.h"
28 #include "ns3/channel.h"
29 #include "ns3/log.h"
30 
31 #include "ns3/ndn-l3-protocol.h"
32 #include "ns3/ndn-net-device-face.h"
33 
34 NS_LOG_COMPONENT_DEFINE ("ndn.LinkControlHelper");
35 
36 namespace ns3 {
37 namespace ndn {
38 
39 void
40 LinkControlHelper::FailLink (Ptr<Node> node1, Ptr<Node> node2)
41 {
42  NS_LOG_FUNCTION (node1 << node2);
43 
44  NS_ASSERT (node1 != 0);
45  NS_ASSERT (node2 != 0);
46 
47  Ptr<ndn::L3Protocol> ndn1 = node1->GetObject<ndn::L3Protocol> ();
48  Ptr<ndn::L3Protocol> ndn2 = node2->GetObject<ndn::L3Protocol> ();
49 
50  NS_ASSERT (ndn1 != 0);
51  NS_ASSERT (ndn2 != 0);
52 
53  // iterate over all faces to find the right one
54  for (uint32_t faceId = 0; faceId < ndn1->GetNFaces (); faceId++)
55  {
56  Ptr<ndn::NetDeviceFace> ndFace = ndn1->GetFace (faceId)->GetObject<ndn::NetDeviceFace> ();
57  if (ndFace == 0) continue;
58 
59  Ptr<PointToPointNetDevice> nd1 = ndFace->GetNetDevice ()->GetObject<PointToPointNetDevice> ();
60  if (nd1 == 0) continue;
61 
62  Ptr<Channel> channel = nd1->GetChannel ();
63  if (channel == 0) continue;
64 
65  Ptr<PointToPointChannel> ppChannel = DynamicCast<PointToPointChannel> (channel);
66 
67  Ptr<NetDevice> nd2 = ppChannel->GetDevice (0);
68  if (nd2->GetNode () == node1)
69  nd2 = ppChannel->GetDevice (1);
70 
71  if (nd2->GetNode () == node2)
72  {
73  Ptr<ndn::Face> face1 = ndn1->GetFaceByNetDevice (nd1);
74  Ptr<ndn::Face> face2 = ndn2->GetFaceByNetDevice (nd2);
75 
76  face1->SetUp (false);
77  face2->SetUp (false);
78  break;
79  }
80  }
81 }
82 void
83 LinkControlHelper::FailLinkByName (const std::string &node1, const std::string &node2)
84 {
85  FailLink (Names::Find<Node> (node1), Names::Find<Node> (node2));
86 }
87 
88 void
89 LinkControlHelper::UpLink (Ptr<Node> node1, Ptr<Node> node2)
90 {
91  NS_LOG_FUNCTION (node1 << node2);
92 
93  NS_ASSERT (node1 != 0);
94  NS_ASSERT (node2 != 0);
95 
96  Ptr<ndn::L3Protocol> ndn1 = node1->GetObject<ndn::L3Protocol> ();
97  Ptr<ndn::L3Protocol> ndn2 = node2->GetObject<ndn::L3Protocol> ();
98 
99  NS_ASSERT (ndn1 != 0);
100  NS_ASSERT (ndn2 != 0);
101 
102  // iterate over all faces to find the right one
103  for (uint32_t faceId = 0; faceId < ndn1->GetNFaces (); faceId++)
104  {
105  Ptr<ndn::NetDeviceFace> ndFace = ndn1->GetFace (faceId)->GetObject<ndn::NetDeviceFace> ();
106  if (ndFace == 0) continue;
107 
108  Ptr<PointToPointNetDevice> nd1 = ndFace->GetNetDevice ()->GetObject<PointToPointNetDevice> ();
109  if (nd1 == 0) continue;
110 
111  Ptr<Channel> channel = nd1->GetChannel ();
112  if (channel == 0) continue;
113 
114  Ptr<PointToPointChannel> ppChannel = DynamicCast<PointToPointChannel> (channel);
115 
116  Ptr<NetDevice> nd2 = ppChannel->GetDevice (0);
117  if (nd2->GetNode () == node1)
118  nd2 = ppChannel->GetDevice (1);
119 
120  if (nd2->GetNode () == node2)
121  {
122  Ptr<ndn::Face> face1 = ndn1->GetFaceByNetDevice (nd1);
123  Ptr<ndn::Face> face2 = ndn2->GetFaceByNetDevice (nd2);
124 
125  face1->SetUp (true);
126  face2->SetUp (true);
127  break;
128  }
129  }
130 }
131 
132 void
133 LinkControlHelper::UpLinkByName (const std::string &node1, const std::string &node2)
134 {
135  UpLink (Names::Find<Node> (node1), Names::Find<Node> (node2));
136 }
137 
138 }
139 }
Implementation network-layer of NDN stack.
Implementation of layer-2 (Ethernet) Ndn face.
Ptr< NetDevice > GetNetDevice() const
Get NetDevice associated with the face.