X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/8cef00b18f68304c259dcae04a052d8414ad101e..eb2a8cfe75036e67d7dcb24eb46f6703295a673f:/src/surf/network_ns3.cpp diff --git a/src/surf/network_ns3.cpp b/src/surf/network_ns3.cpp index d5a4eccfec..e83f84ecf2 100644 --- a/src/surf/network_ns3.cpp +++ b/src/surf/network_ns3.cpp @@ -1,4 +1,4 @@ -/* Copyright (c) 2007-2019. The SimGrid Team. All rights reserved. */ +/* Copyright (c) 2007-2020. The SimGrid Team. All rights reserved. */ /* This program is free software; you can redistribute it and/or modify it * under the terms of the license (GNU LGPL) which comes with this package. */ @@ -44,22 +44,17 @@ extern std::map flow_from_sock; extern std::map sink_from_sock; static ns3::InternetStackHelper stack; -static ns3::NodeContainer nodes; -static ns3::NodeContainer Cluster_nodes; static ns3::Ipv4InterfaceContainer interfaces; static int number_of_nodes = 0; -static int number_of_clusters_nodes = 0; static int number_of_links = 1; static int number_of_networks = 1; simgrid::xbt::Extension NetPointNs3::EXTENSION_ID; -NetPointNs3::NetPointNs3() +NetPointNs3::NetPointNs3() : ns3_node_(ns3::CreateObject(0)) { - ns3_node_ = ns3::CreateObject(0); stack.Install(ns3_node_); - nodes.Add(ns3_node_); node_num = number_of_nodes++; } @@ -69,6 +64,8 @@ NetPointNs3::NetPointNs3() static void clusterCreation_cb(simgrid::kernel::routing::ClusterCreationArgs const& cluster) { + ns3::NodeContainer Nodes; + for (int const& i : *cluster.radicals) { // Routers don't create a router on the other end of the private link by themselves. // We just need this router to be given an ID so we create a temporary NetPointNS3 so that it gets one @@ -76,28 +73,53 @@ static void clusterCreation_cb(simgrid::kernel::routing::ClusterCreationArgs con // Create private link std::string host_id = cluster.prefix + std::to_string(i) + cluster.suffix; - auto* host_src = simgrid::s4u::Host::by_name(host_id)->pimpl_netpoint->extension(); + auto* host_src = simgrid::s4u::Host::by_name(host_id)->get_netpoint()->extension(); xbt_assert(host_src, "Cannot find a ns-3 host of name %s", host_id.c_str()); // Any ns-3 route is symmetrical - ns3_add_link(host_src, host_dst, cluster.bw, cluster.lat); + ns3_add_direct_route(host_src, host_dst, cluster.bw, cluster.lat, cluster.sharing_policy); delete host_dst; + + // Also add the host to the list of hosts that will be connected to the backbone + Nodes.Add(host_src->ns3_node_); } - //Create link backbone - ns3_add_cluster(cluster.id.c_str(), cluster.bb_bw, cluster.bb_lat); + // Create link backbone + + xbt_assert(Nodes.GetN() <= 65000, "Cluster with ns-3 is limited to 65000 nodes"); + ns3::CsmaHelper csma; + csma.SetChannelAttribute("DataRate", + ns3::DataRateValue(ns3::DataRate(cluster.bb_bw * 8))); // ns-3 takes bps, but we provide Bps + csma.SetChannelAttribute("Delay", ns3::TimeValue(ns3::Seconds(cluster.bb_lat))); + ns3::NetDeviceContainer devices = csma.Install(Nodes); + XBT_DEBUG("Create CSMA"); + + std::string addr = simgrid::xbt::string_printf("%d.%d.0.0", number_of_networks, number_of_links); + XBT_DEBUG("Assign IP Addresses %s to CSMA.", addr.c_str()); + ns3::Ipv4AddressHelper ipv4; + ipv4.SetBase(addr.c_str(), "255.255.0.0"); + interfaces.Add(ipv4.Assign(devices)); + + if (number_of_links == 255) { + xbt_assert(number_of_networks < 255, "Number of links and networks exceed 255*255"); + number_of_links = 1; + number_of_networks++; + } else { + number_of_links++; + } } static void routeCreation_cb(bool symmetrical, simgrid::kernel::routing::NetPoint* src, - simgrid::kernel::routing::NetPoint* dst, simgrid::kernel::routing::NetPoint* gw_src, - simgrid::kernel::routing::NetPoint* gw_dst, + simgrid::kernel::routing::NetPoint* dst, simgrid::kernel::routing::NetPoint* /*gw_src*/, + simgrid::kernel::routing::NetPoint* /*gw_dst*/, std::vector const& link_list) { if (link_list.size() == 1) { auto* link = static_cast(link_list[0]); - XBT_DEBUG("Route from '%s' to '%s' with link '%s' %s", src->get_cname(), dst->get_cname(), link->get_cname(), + XBT_DEBUG("Route from '%s' to '%s' with link '%s' %s %s", src->get_cname(), dst->get_cname(), link->get_cname(), + (link->get_sharing_policy() == simgrid::s4u::Link::SharingPolicy::WIFI ? "(wifi)" : "(wired)"), (symmetrical ? "(symmetrical)" : "(not symmetrical)")); // XBT_DEBUG("src (%s), dst (%s), src_id = %d, dst_id = %d",src,dst, src_id, dst_id); @@ -110,7 +132,7 @@ static void routeCreation_cb(bool symmetrical, simgrid::kernel::routing::NetPoin xbt_assert(host_src != nullptr, "Network element %s does not seem to be ns-3-ready", src->get_cname()); xbt_assert(host_dst != nullptr, "Network element %s does not seem to be ns-3-ready", dst->get_cname()); - ns3_add_link(host_src, host_dst, link->get_bandwidth(), link->get_latency()); + ns3_add_direct_route(host_src, host_dst, link->get_bandwidth(), link->get_latency(), link->get_sharing_policy()); } else { static bool warned_about_long_routes = false; @@ -166,7 +188,7 @@ NetworkNS3Model::NetworkNS3Model() : NetworkModel(Model::UpdateAlgo::FULL) pt.extension_set(new NetPointNs3()); XBT_VERB("SimGrid's %s is known as node %d within ns-3", pt.get_cname(), pt.extension()->node_num); }); - surf::on_cluster.connect(&clusterCreation_cb); + routing::on_cluster_creation.connect(&clusterCreation_cb); s4u::Engine::on_platform_created.connect(&postparse_cb); s4u::NetZone::on_route_creation.connect(&routeCreation_cb); @@ -177,10 +199,10 @@ NetworkNS3Model::~NetworkNS3Model() { } LinkImpl* NetworkNS3Model::create_link(const std::string& name, const std::vector& bandwidths, double latency, - s4u::Link::SharingPolicy) + s4u::Link::SharingPolicy policy) { xbt_assert(bandwidths.size() == 1, "ns-3 links must use only 1 bandwidth."); - return new LinkNS3(this, name, bandwidths[0], latency); + return new LinkNS3(this, name, bandwidths[0], latency, policy); } Action* NetworkNS3Model::communicate(s4u::Host* src, s4u::Host* dst, double size, double rate) @@ -191,10 +213,10 @@ Action* NetworkNS3Model::communicate(s4u::Host* src, s4u::Host* dst, double size return new NetworkNS3Action(this, size, src, dst); } -double NetworkNS3Model::next_occuring_event(double now) +double NetworkNS3Model::next_occurring_event(double now) { double time_to_next_flow_completion = 0.0; - XBT_DEBUG("ns3_next_occuring_event"); + XBT_DEBUG("ns3_next_occurring_event"); //get the first relevant value from the running_actions list @@ -231,8 +253,8 @@ void NetworkNS3Model::update_actions_state(double now, double delta) SgFlow* sgFlow = elm.second; NetworkNS3Action * action = sgFlow->action_; XBT_DEBUG("Processing socket %p (action %p)",sgFlow,action); - // Because NS3 stops as soon as a flow is finished, the other flows that ends at the same time may remains in an inconsistant state - // (i.e. remains_ == 0 but finished_ == false). + // Because NS3 stops as soon as a flow is finished, the other flows that ends at the same time may remains in an + // inconsistent state (i.e. remains_ == 0 but finished_ == false). // However, SimGrid considers sometimes that an action with remains_ == 0 is finished. // Thus, to avoid inconsistencies between SimGrid and NS3, set remains to 0 only when the flow is finished in NS3 int remains = action->get_cost() - sgFlow->sent_bytes_; @@ -244,10 +266,10 @@ void NetworkNS3Model::update_actions_state(double now, double delta) std::vector route = std::vector(); - action->src_->route_to(action->dst_, route, nullptr); + action->get_src().route_to(&action->get_dst(), route, nullptr); for (auto const& link : route) - TRACE_surf_resource_set_utilization("LINK", "bandwidth_used", link->get_cname(), action->get_category(), - (data_delta_sent) / delta, now - delta, delta); + instr::resource_set_utilization("LINK", "bandwidth_used", link->get_cname(), action->get_category(), + (data_delta_sent) / delta, now - delta, delta); action->last_sent_ = sgFlow->sent_bytes_; } @@ -256,7 +278,7 @@ void NetworkNS3Model::update_actions_state(double now, double delta) socket_to_destroy.push_back(ns3_socket); XBT_DEBUG("Destroy socket %p of action %p", ns3_socket.c_str(), action); action->set_remains(0); - action->finish(kernel::resource::Action::State::FINISHED); + action->finish(Action::State::FINISHED); } else { XBT_DEBUG("Socket %p sent %u bytes out of %u (%u remaining)", ns3_socket.c_str(), sgFlow->sent_bytes_, sgFlow->total_bytes_, sgFlow->remaining_); @@ -280,13 +302,16 @@ void NetworkNS3Model::update_actions_state(double now, double delta) * Resource * ************/ -LinkNS3::LinkNS3(NetworkNS3Model* model, const std::string& name, double bandwidth, double latency) - : LinkImpl(model, name, nullptr) +LinkNS3::LinkNS3(NetworkNS3Model* model, const std::string& name, double bandwidth, double latency, + s4u::Link::SharingPolicy policy) + : LinkImpl(model, name, nullptr), sharing_policy_(policy) { bandwidth_.peak = bandwidth; latency_.peak = latency; - s4u::Link::on_creation(this->piface_); + /* If wifi, create the wifizone now. If not, don't do anything: the links will be created in routeCreate_cb */ + + s4u::Link::on_creation(*this->get_iface()); } LinkNS3::~LinkNS3() = default; @@ -309,9 +334,8 @@ void LinkNS3::set_latency_profile(profile::Profile*) **********/ NetworkNS3Action::NetworkNS3Action(Model* model, double totalBytes, s4u::Host* src, s4u::Host* dst) - : NetworkAction(model, totalBytes, false), src_(src), dst_(dst) + : NetworkAction(model, *src, *dst, totalBytes, false) { - // If there is no other started actions, we need to move NS-3 forward to be sync with SimGrid if (model->get_started_action_set()->size()==1){ while(double_positive(surf_get_clock() - ns3::Simulator::Now().GetSeconds(), sg_surf_precision)){ @@ -324,17 +348,17 @@ NetworkNS3Action::NetworkNS3Action(Model* model, double totalBytes, s4u::Host* s static int port_number = 1025; // Port number is limited from 1025 to 65 000 - unsigned int node1 = src->pimpl_netpoint->extension()->node_num; - unsigned int node2 = dst->pimpl_netpoint->extension()->node_num; + unsigned int node1 = src->get_netpoint()->extension()->node_num; + unsigned int node2 = dst->get_netpoint()->extension()->node_num; - ns3::Ptr src_node = src->pimpl_netpoint->extension()->ns3_node_; - ns3::Ptr dst_node = dst->pimpl_netpoint->extension()->ns3_node_; + ns3::Ptr src_node = src->get_netpoint()->extension()->ns3_node_; + ns3::Ptr dst_node = dst->get_netpoint()->extension()->ns3_node_; xbt_assert(node2 < IPV4addr.size(), "Element %s is unknown to ns-3. Is it connected to any one-hop link?", - dst->pimpl_netpoint->get_cname()); + dst->get_netpoint()->get_cname()); std::string& addr = IPV4addr[node2]; xbt_assert(not addr.empty(), "Element %s is unknown to ns-3. Is it connected to any one-hop link?", - dst->pimpl_netpoint->get_cname()); + dst->get_netpoint()->get_cname()); XBT_DEBUG("ns3: Create flow of %.0f Bytes from %u to %u with Interface %s", totalBytes, node1, node2, addr.c_str()); ns3::PacketSinkHelper sink("ns3::TcpSocketFactory", ns3::InetSocketAddress(ns3::Ipv4Address::GetAny(), port_number)); @@ -354,9 +378,8 @@ NetworkNS3Action::NetworkNS3Action(Model* model, double totalBytes, s4u::Host* s port_number = 1025; XBT_WARN("Too many connections! Port number is saturated. Trying to use the oldest ports."); } - xbt_assert(port_number <= 65000, "Too many connections! Port number is saturated."); - s4u::Link::on_communicate(*this, src, dst); + s4u::Link::on_communicate(*this); } void NetworkNS3Action::suspend() { @@ -367,7 +390,7 @@ void NetworkNS3Action::resume() { THROW_UNIMPLEMENTED; } -std::list NetworkNS3Action::links() const +std::list NetworkNS3Action::get_links() const { THROW_UNIMPLEMENTED; } @@ -426,41 +449,6 @@ void ns3_initialize(std::string TcpProtocol) } } -void ns3_add_cluster(const char* id, double bw, double lat) { - ns3::NodeContainer Nodes; - - for (unsigned int i = number_of_clusters_nodes; i < Cluster_nodes.GetN(); i++) { - Nodes.Add(Cluster_nodes.Get(i)); - XBT_DEBUG("Add node %u to cluster", i); - } - number_of_clusters_nodes = Cluster_nodes.GetN(); - - XBT_DEBUG("Add router %u to cluster", nodes.GetN() - Nodes.GetN() - 1); - Nodes.Add(nodes.Get(nodes.GetN()-Nodes.GetN()-1)); - - xbt_assert(Nodes.GetN() <= 65000, "Cluster with ns-3 is limited to 65000 nodes"); - ns3::CsmaHelper csma; - csma.SetChannelAttribute("DataRate", ns3::DataRateValue(ns3::DataRate(bw * 8))); // ns-3 takes bps, but we provide Bps - csma.SetChannelAttribute("Delay", ns3::TimeValue(ns3::Seconds(lat))); - ns3::NetDeviceContainer devices = csma.Install(Nodes); - XBT_DEBUG("Create CSMA"); - - std::string addr = simgrid::xbt::string_printf("%d.%d.0.0", number_of_networks, number_of_links); - XBT_DEBUG("Assign IP Addresses %s to CSMA.", addr.c_str()); - ns3::Ipv4AddressHelper ipv4; - ipv4.SetBase(addr.c_str(), "255.255.0.0"); - interfaces.Add(ipv4.Assign (devices)); - - if(number_of_links == 255){ - xbt_assert(number_of_networks < 255, "Number of links and networks exceed 255*255"); - number_of_links = 1; - number_of_networks++; - }else{ - number_of_links++; - } - XBT_DEBUG("Number of nodes in Cluster_nodes: %u", Cluster_nodes.GetN()); -} - static std::string transformIpv4Address(ns3::Ipv4Address from) { std::stringstream sstream; @@ -468,10 +456,11 @@ static std::string transformIpv4Address(ns3::Ipv4Address from) return sstream.str(); } -void ns3_add_link(NetPointNs3* src, NetPointNs3* dst, double bw, double lat) { - ns3::PointToPointHelper pointToPoint; - +void ns3_add_direct_route(NetPointNs3* src, NetPointNs3* dst, double bw, double lat, + simgrid::s4u::Link::SharingPolicy policy) +{ ns3::Ipv4AddressHelper address; + ns3::NetDeviceContainer netA; int srcNum = src->node_num; int dstNum = dst->node_num; @@ -479,13 +468,18 @@ void ns3_add_link(NetPointNs3* src, NetPointNs3* dst, double bw, double lat) { ns3::Ptr a = src->ns3_node_; ns3::Ptr b = dst->ns3_node_; - XBT_DEBUG("\tAdd PTP from %d to %d bw:'%f Bps' lat:'%fs'", srcNum, dstNum, bw, lat); - pointToPoint.SetDeviceAttribute("DataRate", - ns3::DataRateValue(ns3::DataRate(bw * 8))); // ns-3 takes bps, but we provide Bps - pointToPoint.SetChannelAttribute("Delay", ns3::TimeValue(ns3::Seconds(lat))); + if (policy == simgrid::s4u::Link::SharingPolicy::WIFI) { + /* Install a ns3::WifiHelper */ + } else { + ns3::PointToPointHelper pointToPoint; + + XBT_DEBUG("\tAdd PTP from %d to %d bw:'%f Bps' lat:'%fs'", srcNum, dstNum, bw, lat); + pointToPoint.SetDeviceAttribute("DataRate", + ns3::DataRateValue(ns3::DataRate(bw * 8))); // ns-3 takes bps, but we provide Bps + pointToPoint.SetChannelAttribute("Delay", ns3::TimeValue(ns3::Seconds(lat))); - ns3::NetDeviceContainer netA; - netA.Add(pointToPoint.Install (a, b)); + netA.Add(pointToPoint.Install(a, b)); + } std::string addr = simgrid::xbt::string_printf("%d.%d.0.0", number_of_networks, number_of_links); address.SetBase(addr.c_str(), "255.255.0.0");