Alexander Afanasyev | ad3757f | 2012-04-17 10:27:59 -0700 | [diff] [blame] | 1 | /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */ |
| 2 | /* |
| 3 | * Copyright (c) 2011 UCLA |
| 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 | */ |
| 20 | |
Alexander Afanasyev | 3898e1b | 2013-07-27 12:03:17 -0700 | [diff] [blame] | 21 | #if __clang__ |
| 22 | #pragma clang diagnostic push |
| 23 | #pragma clang diagnostic ignored "-Wunused-variable" |
| 24 | #pragma clang diagnostic ignored "-Wunneeded-internal-declaration" |
| 25 | #endif |
| 26 | |
Alexander Afanasyev | 0c39537 | 2014-12-20 15:54:02 -0800 | [diff] [blame] | 27 | #include "ndn-global-routing-helper.hpp" |
Alexander Afanasyev | ad3757f | 2012-04-17 10:27:59 -0700 | [diff] [blame] | 28 | |
Alexander Afanasyev | 0c39537 | 2014-12-20 15:54:02 -0800 | [diff] [blame] | 29 | #include "ns3/ndn-l3-protocol.hpp" |
| 30 | #include "../model/ndn-net-device-face.hpp" |
| 31 | #include "../model/ndn-global-router.hpp" |
| 32 | #include "ns3/ndn-name.hpp" |
| 33 | #include "ns3/ndn-fib.hpp" |
Alexander Afanasyev | ad3757f | 2012-04-17 10:27:59 -0700 | [diff] [blame] | 34 | |
| 35 | #include "ns3/node.h" |
Alexander Afanasyev | ce81014 | 2012-04-17 15:50:36 -0700 | [diff] [blame] | 36 | #include "ns3/node-container.h" |
Alexander Afanasyev | ad3757f | 2012-04-17 10:27:59 -0700 | [diff] [blame] | 37 | #include "ns3/net-device.h" |
| 38 | #include "ns3/channel.h" |
| 39 | #include "ns3/log.h" |
| 40 | #include "ns3/assert.h" |
| 41 | #include "ns3/names.h" |
| 42 | #include "ns3/node-list.h" |
| 43 | #include "ns3/channel-list.h" |
Alexander Afanasyev | f5c0774 | 2012-10-31 13:13:05 -0700 | [diff] [blame] | 44 | #include "ns3/object-factory.h" |
Alexander Afanasyev | ad3757f | 2012-04-17 10:27:59 -0700 | [diff] [blame] | 45 | |
| 46 | #include <boost/lexical_cast.hpp> |
Alexander Afanasyev | 8e2f112 | 2012-04-17 15:01:11 -0700 | [diff] [blame] | 47 | #include <boost/foreach.hpp> |
Alexander Afanasyev | a5abcd9 | 2012-04-17 13:34:43 -0700 | [diff] [blame] | 48 | #include <boost/concept/assert.hpp> |
| 49 | // #include <boost/graph/graph_concepts.hpp> |
| 50 | // #include <boost/graph/adjacency_list.hpp> |
| 51 | #include <boost/graph/dijkstra_shortest_paths.hpp> |
| 52 | |
Alexander Afanasyev | 0c39537 | 2014-12-20 15:54:02 -0800 | [diff] [blame] | 53 | #include "boost-graph-ndn-global-routing-helper.hpp" |
Alexander Afanasyev | ad3757f | 2012-04-17 10:27:59 -0700 | [diff] [blame] | 54 | |
Alexander Afanasyev | 7353251 | 2012-11-27 00:42:35 -0800 | [diff] [blame] | 55 | #include <math.h> |
| 56 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 57 | NS_LOG_COMPONENT_DEFINE("ndn.GlobalRoutingHelper"); |
Alexander Afanasyev | ad3757f | 2012-04-17 10:27:59 -0700 | [diff] [blame] | 58 | |
| 59 | using namespace std; |
| 60 | using namespace boost; |
| 61 | |
| 62 | namespace ns3 { |
Alexander Afanasyev | 2b4c947 | 2012-08-09 15:00:38 -0700 | [diff] [blame] | 63 | namespace ndn { |
Alexander Afanasyev | ad3757f | 2012-04-17 10:27:59 -0700 | [diff] [blame] | 64 | |
| 65 | void |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 66 | GlobalRoutingHelper::Install(Ptr<Node> node) |
Alexander Afanasyev | ad3757f | 2012-04-17 10:27:59 -0700 | [diff] [blame] | 67 | { |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 68 | NS_LOG_LOGIC("Node: " << node->GetId()); |
Alexander Afanasyev | 4916586 | 2013-01-31 00:38:20 -0800 | [diff] [blame] | 69 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 70 | Ptr<L3Protocol> ndn = node->GetObject<L3Protocol>(); |
| 71 | NS_ASSERT_MSG(ndn != 0, "Cannot install GlobalRoutingHelper before Ndn is installed on a node"); |
Alexander Afanasyev | ad3757f | 2012-04-17 10:27:59 -0700 | [diff] [blame] | 72 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 73 | Ptr<GlobalRouter> gr = node->GetObject<GlobalRouter>(); |
| 74 | if (gr != 0) { |
| 75 | NS_LOG_DEBUG("GlobalRouter is already installed: " << gr); |
| 76 | return; // already installed |
| 77 | } |
| 78 | |
| 79 | gr = CreateObject<GlobalRouter>(); |
| 80 | node->AggregateObject(gr); |
| 81 | |
| 82 | for (uint32_t faceId = 0; faceId < ndn->GetNFaces(); faceId++) { |
| 83 | Ptr<NetDeviceFace> face = DynamicCast<NetDeviceFace>(ndn->GetFace(faceId)); |
| 84 | if (face == 0) { |
| 85 | NS_LOG_DEBUG("Skipping non-netdevice face"); |
| 86 | continue; |
Alexander Afanasyev | ad3757f | 2012-04-17 10:27:59 -0700 | [diff] [blame] | 87 | } |
Alexander Afanasyev | 4916586 | 2013-01-31 00:38:20 -0800 | [diff] [blame] | 88 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 89 | Ptr<NetDevice> nd = face->GetNetDevice(); |
| 90 | if (nd == 0) { |
| 91 | NS_LOG_DEBUG("Not a NetDevice associated with NetDeviceFace"); |
| 92 | continue; |
Alexander Afanasyev | ad3757f | 2012-04-17 10:27:59 -0700 | [diff] [blame] | 93 | } |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 94 | |
| 95 | Ptr<Channel> ch = nd->GetChannel(); |
| 96 | |
| 97 | if (ch == 0) { |
| 98 | NS_LOG_DEBUG("Channel is not associated with NetDevice"); |
| 99 | continue; |
| 100 | } |
| 101 | |
| 102 | if (ch->GetNDevices() == 2) // e.g., point-to-point channel |
| 103 | { |
| 104 | for (uint32_t deviceId = 0; deviceId < ch->GetNDevices(); deviceId++) { |
| 105 | Ptr<NetDevice> otherSide = ch->GetDevice(deviceId); |
| 106 | if (nd == otherSide) |
| 107 | continue; |
| 108 | |
| 109 | Ptr<Node> otherNode = otherSide->GetNode(); |
| 110 | NS_ASSERT(otherNode != 0); |
| 111 | |
| 112 | Ptr<GlobalRouter> otherGr = otherNode->GetObject<GlobalRouter>(); |
| 113 | if (otherGr == 0) { |
| 114 | Install(otherNode); |
| 115 | } |
| 116 | otherGr = otherNode->GetObject<GlobalRouter>(); |
| 117 | NS_ASSERT(otherGr != 0); |
| 118 | gr->AddIncidency(face, otherGr); |
| 119 | } |
| 120 | } |
| 121 | else { |
| 122 | Ptr<GlobalRouter> grChannel = ch->GetObject<GlobalRouter>(); |
| 123 | if (grChannel == 0) { |
| 124 | Install(ch); |
| 125 | } |
| 126 | grChannel = ch->GetObject<GlobalRouter>(); |
| 127 | |
| 128 | gr->AddIncidency(face, grChannel); |
| 129 | } |
| 130 | } |
Alexander Afanasyev | ad3757f | 2012-04-17 10:27:59 -0700 | [diff] [blame] | 131 | } |
| 132 | |
| 133 | void |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 134 | GlobalRoutingHelper::Install(Ptr<Channel> channel) |
Alexander Afanasyev | ad3757f | 2012-04-17 10:27:59 -0700 | [diff] [blame] | 135 | { |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 136 | NS_LOG_LOGIC("Channel: " << channel->GetId()); |
Alexander Afanasyev | ad3757f | 2012-04-17 10:27:59 -0700 | [diff] [blame] | 137 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 138 | Ptr<GlobalRouter> gr = channel->GetObject<GlobalRouter>(); |
Alexander Afanasyev | ad3757f | 2012-04-17 10:27:59 -0700 | [diff] [blame] | 139 | if (gr != 0) |
| 140 | return; |
| 141 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 142 | gr = CreateObject<GlobalRouter>(); |
| 143 | channel->AggregateObject(gr); |
Alexander Afanasyev | 4916586 | 2013-01-31 00:38:20 -0800 | [diff] [blame] | 144 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 145 | for (uint32_t deviceId = 0; deviceId < channel->GetNDevices(); deviceId++) { |
| 146 | Ptr<NetDevice> dev = channel->GetDevice(deviceId); |
Alexander Afanasyev | ad3757f | 2012-04-17 10:27:59 -0700 | [diff] [blame] | 147 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 148 | Ptr<Node> node = dev->GetNode(); |
| 149 | NS_ASSERT(node != 0); |
Alexander Afanasyev | ad3757f | 2012-04-17 10:27:59 -0700 | [diff] [blame] | 150 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 151 | Ptr<GlobalRouter> grOther = node->GetObject<GlobalRouter>(); |
| 152 | if (grOther == 0) { |
| 153 | Install(node); |
Alexander Afanasyev | ad3757f | 2012-04-17 10:27:59 -0700 | [diff] [blame] | 154 | } |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 155 | grOther = node->GetObject<GlobalRouter>(); |
| 156 | NS_ASSERT(grOther != 0); |
| 157 | |
| 158 | gr->AddIncidency(0, grOther); |
| 159 | } |
Alexander Afanasyev | ad3757f | 2012-04-17 10:27:59 -0700 | [diff] [blame] | 160 | } |
| 161 | |
| 162 | void |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 163 | GlobalRoutingHelper::Install(const NodeContainer& nodes) |
Alexander Afanasyev | ce81014 | 2012-04-17 15:50:36 -0700 | [diff] [blame] | 164 | { |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 165 | for (NodeContainer::Iterator node = nodes.Begin(); node != nodes.End(); node++) { |
| 166 | Install(*node); |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | void |
| 171 | GlobalRoutingHelper::InstallAll() |
| 172 | { |
| 173 | Install(NodeContainer::GetGlobal()); |
| 174 | } |
| 175 | |
| 176 | void |
| 177 | GlobalRoutingHelper::AddOrigin(const std::string& prefix, Ptr<Node> node) |
| 178 | { |
| 179 | Ptr<GlobalRouter> gr = node->GetObject<GlobalRouter>(); |
| 180 | NS_ASSERT_MSG(gr != 0, "GlobalRouter is not installed on the node"); |
| 181 | |
| 182 | Ptr<Name> name = Create<Name>(boost::lexical_cast<Name>(prefix)); |
| 183 | gr->AddLocalPrefix(name); |
| 184 | } |
| 185 | |
| 186 | void |
| 187 | GlobalRoutingHelper::AddOrigins(const std::string& prefix, const NodeContainer& nodes) |
| 188 | { |
| 189 | for (NodeContainer::Iterator node = nodes.Begin(); node != nodes.End(); node++) { |
| 190 | AddOrigin(prefix, *node); |
| 191 | } |
| 192 | } |
| 193 | |
| 194 | void |
| 195 | GlobalRoutingHelper::AddOrigin(const std::string& prefix, const std::string& nodeName) |
| 196 | { |
| 197 | Ptr<Node> node = Names::Find<Node>(nodeName); |
| 198 | NS_ASSERT_MSG(node != 0, nodeName << "is not a Node"); |
| 199 | |
| 200 | AddOrigin(prefix, node); |
| 201 | } |
| 202 | |
| 203 | void |
| 204 | GlobalRoutingHelper::AddOriginsForAll() |
| 205 | { |
| 206 | for (NodeList::Iterator node = NodeList::Begin(); node != NodeList::End(); node++) { |
| 207 | Ptr<GlobalRouter> gr = (*node)->GetObject<GlobalRouter>(); |
| 208 | string name = Names::FindName(*node); |
| 209 | |
| 210 | if (gr != 0 && !name.empty()) { |
| 211 | AddOrigin("/" + name, *node); |
Alexander Afanasyev | ce81014 | 2012-04-17 15:50:36 -0700 | [diff] [blame] | 212 | } |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 213 | } |
Alexander Afanasyev | ce81014 | 2012-04-17 15:50:36 -0700 | [diff] [blame] | 214 | } |
| 215 | |
| 216 | void |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 217 | GlobalRoutingHelper::CalculateRoutes(bool invalidatedRoutes /* = true*/) |
Alexander Afanasyev | ad3757f | 2012-04-17 10:27:59 -0700 | [diff] [blame] | 218 | { |
Alexander Afanasyev | 8e2f112 | 2012-04-17 15:01:11 -0700 | [diff] [blame] | 219 | /** |
| 220 | * Implementation of route calculation is heavily based on Boost Graph Library |
| 221 | * See http://www.boost.org/doc/libs/1_49_0/libs/graph/doc/table_of_contents.html for more details |
| 222 | */ |
Alexander Afanasyev | 4916586 | 2013-01-31 00:38:20 -0800 | [diff] [blame] | 223 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 224 | BOOST_CONCEPT_ASSERT((VertexListGraphConcept<NdnGlobalRouterGraph>)); |
| 225 | BOOST_CONCEPT_ASSERT((IncidenceGraphConcept<NdnGlobalRouterGraph>)); |
Alexander Afanasyev | 4916586 | 2013-01-31 00:38:20 -0800 | [diff] [blame] | 226 | |
Alexander Afanasyev | 4aac557 | 2012-08-09 10:49:55 -0700 | [diff] [blame] | 227 | NdnGlobalRouterGraph graph; |
Zongyi Zhao | c837263 | 2014-04-28 15:36:49 -0700 | [diff] [blame] | 228 | // typedef graph_traits < NdnGlobalRouterGraph >::vertex_descriptor vertex_descriptor; |
Alexander Afanasyev | ad3757f | 2012-04-17 10:27:59 -0700 | [diff] [blame] | 229 | |
Alexander Afanasyev | 8e2f112 | 2012-04-17 15:01:11 -0700 | [diff] [blame] | 230 | // For now we doing Dijkstra for every node. Can be replaced with Bellman-Ford or Floyd-Warshall. |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 231 | // Other algorithms should be faster, but they need additional EdgeListGraph concept provided by |
| 232 | // the graph, which |
Alexander Afanasyev | 8e2f112 | 2012-04-17 15:01:11 -0700 | [diff] [blame] | 233 | // is not obviously how implement in an efficient manner |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 234 | for (NodeList::Iterator node = NodeList::Begin(); node != NodeList::End(); node++) { |
| 235 | Ptr<GlobalRouter> source = (*node)->GetObject<GlobalRouter>(); |
| 236 | if (source == 0) { |
| 237 | NS_LOG_DEBUG("Node " << (*node)->GetId() << " does not export GlobalRouter interface"); |
| 238 | continue; |
| 239 | } |
Alexander Afanasyev | 4916586 | 2013-01-31 00:38:20 -0800 | [diff] [blame] | 240 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 241 | DistancesMap distances; |
Alexander Afanasyev | ad3757f | 2012-04-17 10:27:59 -0700 | [diff] [blame] | 242 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 243 | dijkstra_shortest_paths(graph, source, |
| 244 | // predecessor_map (boost::ref(predecessors)) |
| 245 | // . |
| 246 | distance_map(boost::ref(distances)) |
| 247 | .distance_inf(WeightInf) |
| 248 | .distance_zero(WeightZero) |
| 249 | .distance_compare(boost::WeightCompare()) |
| 250 | .distance_combine(boost::WeightCombine())); |
| 251 | |
| 252 | // NS_LOG_DEBUG (predecessors.size () << ", " << distances.size ()); |
| 253 | |
| 254 | Ptr<Fib> fib = source->GetObject<Fib>(); |
| 255 | if (invalidatedRoutes) { |
| 256 | fib->InvalidateAll(); |
| 257 | } |
| 258 | NS_ASSERT(fib != 0); |
| 259 | |
| 260 | NS_LOG_DEBUG("Reachability from Node: " << source->GetObject<Node>()->GetId()); |
| 261 | for (DistancesMap::iterator i = distances.begin(); i != distances.end(); i++) { |
| 262 | if (i->first == source) |
| 263 | continue; |
| 264 | else { |
| 265 | // cout << " Node " << i->first->GetObject<Node> ()->GetId (); |
| 266 | if (i->second.get<0>() == 0) { |
| 267 | // cout << " is unreachable" << endl; |
| 268 | } |
| 269 | else { |
| 270 | BOOST_FOREACH (const Ptr<const Name>& prefix, i->first->GetLocalPrefixes()) { |
| 271 | NS_LOG_DEBUG(" prefix " << prefix << " reachable via face " << *i->second.get<0>() |
| 272 | << " with distance " << i->second.get<1>() << " with delay " |
| 273 | << i->second.get<2>()); |
| 274 | |
| 275 | Ptr<fib::Entry> entry = fib->Add(prefix, i->second.get<0>(), i->second.get<1>()); |
| 276 | entry->SetRealDelayToProducer(i->second.get<0>(), Seconds(i->second.get<2>())); |
| 277 | |
| 278 | Ptr<Limits> faceLimits = i->second.get<0>()->GetObject<Limits>(); |
| 279 | |
| 280 | Ptr<Limits> fibLimits = entry->GetObject<Limits>(); |
| 281 | if (fibLimits != 0) { |
| 282 | // if it was created by the forwarding strategy via DidAddFibEntry event |
| 283 | fibLimits->SetLimits(faceLimits->GetMaxRate(), 2 * i->second.get<2>() /*exact RTT*/); |
| 284 | NS_LOG_DEBUG("Set limit for prefix " |
| 285 | << *prefix << " " << faceLimits->GetMaxRate() << " / " |
| 286 | << 2 * i->second.get<2>() << "s (" |
| 287 | << faceLimits->GetMaxRate() * 2 * i->second.get<2>() << ")"); |
| 288 | } |
| 289 | } |
| 290 | } |
| 291 | } |
| 292 | } |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | void |
| 297 | GlobalRoutingHelper::CalculateAllPossibleRoutes(bool invalidatedRoutes /* = true*/) |
| 298 | { |
| 299 | /** |
| 300 | * Implementation of route calculation is heavily based on Boost Graph Library |
| 301 | * See http://www.boost.org/doc/libs/1_49_0/libs/graph/doc/table_of_contents.html for more details |
| 302 | */ |
| 303 | |
| 304 | BOOST_CONCEPT_ASSERT((VertexListGraphConcept<NdnGlobalRouterGraph>)); |
| 305 | BOOST_CONCEPT_ASSERT((IncidenceGraphConcept<NdnGlobalRouterGraph>)); |
| 306 | |
| 307 | NdnGlobalRouterGraph graph; |
| 308 | // typedef graph_traits < NdnGlobalRouterGraph >::vertex_descriptor vertex_descriptor; |
| 309 | |
| 310 | // For now we doing Dijkstra for every node. Can be replaced with Bellman-Ford or Floyd-Warshall. |
| 311 | // Other algorithms should be faster, but they need additional EdgeListGraph concept provided by |
| 312 | // the graph, which |
| 313 | // is not obviously how implement in an efficient manner |
| 314 | for (NodeList::Iterator node = NodeList::Begin(); node != NodeList::End(); node++) { |
| 315 | Ptr<GlobalRouter> source = (*node)->GetObject<GlobalRouter>(); |
| 316 | if (source == 0) { |
| 317 | NS_LOG_DEBUG("Node " << (*node)->GetId() << " does not export GlobalRouter interface"); |
| 318 | continue; |
| 319 | } |
| 320 | |
| 321 | Ptr<Fib> fib = source->GetObject<Fib>(); |
| 322 | if (invalidatedRoutes) { |
| 323 | fib->InvalidateAll(); |
| 324 | } |
| 325 | NS_ASSERT(fib != 0); |
| 326 | |
| 327 | NS_LOG_DEBUG("==========="); |
| 328 | NS_LOG_DEBUG("Reachability from Node: " << source->GetObject<Node>()->GetId() << " (" |
| 329 | << Names::FindName(source->GetObject<Node>()) << ")"); |
| 330 | |
| 331 | Ptr<L3Protocol> l3 = source->GetObject<L3Protocol>(); |
| 332 | NS_ASSERT(l3 != 0); |
| 333 | |
| 334 | // remember interface statuses |
| 335 | std::vector<uint16_t> originalMetric(l3->GetNFaces()); |
| 336 | for (uint32_t faceId = 0; faceId < l3->GetNFaces(); faceId++) { |
| 337 | originalMetric[faceId] = l3->GetFace(faceId)->GetMetric(); |
| 338 | l3->GetFace(faceId) |
| 339 | ->SetMetric(std::numeric_limits<uint16_t>::max() |
| 340 | - 1); // value std::numeric_limits<uint16_t>::max () MUST NOT be used (reserved) |
| 341 | } |
| 342 | |
| 343 | for (uint32_t enabledFaceId = 0; enabledFaceId < l3->GetNFaces(); enabledFaceId++) { |
| 344 | if (DynamicCast<ndn::NetDeviceFace>(l3->GetFace(enabledFaceId)) == 0) |
| 345 | continue; |
| 346 | |
| 347 | // enabling only faceId |
| 348 | l3->GetFace(enabledFaceId)->SetMetric(originalMetric[enabledFaceId]); |
| 349 | |
| 350 | DistancesMap distances; |
| 351 | |
| 352 | NS_LOG_DEBUG("-----------"); |
| 353 | |
| 354 | dijkstra_shortest_paths(graph, source, |
| 355 | // predecessor_map (boost::ref(predecessors)) |
| 356 | // . |
| 357 | distance_map(boost::ref(distances)) |
| 358 | .distance_inf(WeightInf) |
| 359 | .distance_zero(WeightZero) |
| 360 | .distance_compare(boost::WeightCompare()) |
| 361 | .distance_combine(boost::WeightCombine())); |
Alexander Afanasyev | ad3757f | 2012-04-17 10:27:59 -0700 | [diff] [blame] | 362 | |
Alexander Afanasyev | a5abcd9 | 2012-04-17 13:34:43 -0700 | [diff] [blame] | 363 | // NS_LOG_DEBUG (predecessors.size () << ", " << distances.size ()); |
Alexander Afanasyev | 8e2f112 | 2012-04-17 15:01:11 -0700 | [diff] [blame] | 364 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 365 | for (DistancesMap::iterator i = distances.begin(); i != distances.end(); i++) { |
| 366 | if (i->first == source) |
| 367 | continue; |
| 368 | else { |
| 369 | // cout << " Node " << i->first->GetObject<Node> ()->GetId (); |
| 370 | if (i->second.get<0>() == 0) { |
| 371 | // cout << " is unreachable" << endl; |
| 372 | } |
| 373 | else { |
| 374 | BOOST_FOREACH (const Ptr<const Name>& prefix, i->first->GetLocalPrefixes()) { |
| 375 | NS_LOG_DEBUG(" prefix " << *prefix << " reachable via face " << *i->second.get<0>() |
| 376 | << " with distance " << i->second.get<1>() << " with delay " |
| 377 | << i->second.get<2>()); |
Alexander Afanasyev | 4916586 | 2013-01-31 00:38:20 -0800 | [diff] [blame] | 378 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 379 | if (i->second.get<0>()->GetMetric() == std::numeric_limits<uint16_t>::max() - 1) |
Alexander Afanasyev | f484fb9 | 2013-03-04 10:37:27 -0800 | [diff] [blame] | 380 | continue; |
Alexander Afanasyev | f484fb9 | 2013-03-04 10:37:27 -0800 | [diff] [blame] | 381 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 382 | Ptr<fib::Entry> entry = fib->Add(prefix, i->second.get<0>(), i->second.get<1>()); |
| 383 | entry->SetRealDelayToProducer(i->second.get<0>(), Seconds(i->second.get<2>())); |
Alexander Afanasyev | f484fb9 | 2013-03-04 10:37:27 -0800 | [diff] [blame] | 384 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 385 | Ptr<Limits> faceLimits = i->second.get<0>()->GetObject<Limits>(); |
Alexander Afanasyev | f484fb9 | 2013-03-04 10:37:27 -0800 | [diff] [blame] | 386 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 387 | Ptr<Limits> fibLimits = entry->GetObject<Limits>(); |
| 388 | if (fibLimits != 0) { |
| 389 | // if it was created by the forwarding strategy via DidAddFibEntry event |
| 390 | fibLimits->SetLimits(faceLimits->GetMaxRate(), |
| 391 | 2 * i->second.get<2>() /*exact RTT*/); |
| 392 | NS_LOG_DEBUG("Set limit for prefix " |
| 393 | << *prefix << " " << faceLimits->GetMaxRate() << " / " |
| 394 | << 2 * i->second.get<2>() << "s (" |
| 395 | << faceLimits->GetMaxRate() * 2 * i->second.get<2>() << ")"); |
| 396 | } |
Alexander Afanasyev | f484fb9 | 2013-03-04 10:37:27 -0800 | [diff] [blame] | 397 | } |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 398 | } |
Alexander Afanasyev | f484fb9 | 2013-03-04 10:37:27 -0800 | [diff] [blame] | 399 | } |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 400 | } |
Alexander Afanasyev | f484fb9 | 2013-03-04 10:37:27 -0800 | [diff] [blame] | 401 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 402 | // disabling the face again |
| 403 | l3->GetFace(enabledFaceId)->SetMetric(std::numeric_limits<uint16_t>::max() - 1); |
Alexander Afanasyev | f484fb9 | 2013-03-04 10:37:27 -0800 | [diff] [blame] | 404 | } |
Alexander Afanasyev | f484fb9 | 2013-03-04 10:37:27 -0800 | [diff] [blame] | 405 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame^] | 406 | // recover original interface statuses |
| 407 | for (uint32_t faceId = 0; faceId < l3->GetNFaces(); faceId++) { |
| 408 | l3->GetFace(faceId)->SetMetric(originalMetric[faceId]); |
| 409 | } |
| 410 | } |
| 411 | } |
Alexander Afanasyev | ad3757f | 2012-04-17 10:27:59 -0700 | [diff] [blame] | 412 | |
Alexander Afanasyev | 2b4c947 | 2012-08-09 15:00:38 -0700 | [diff] [blame] | 413 | } // namespace ndn |
| 414 | } // namespace ns3 |