X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/a538238bad76a1c2cfa458b67e3cb7f0ece9ae8d..HEAD:/src/surf/network_ns3.cpp diff --git a/src/surf/network_ns3.cpp b/src/surf/network_ns3.cpp deleted file mode 100644 index 4ff24bea16..0000000000 --- a/src/surf/network_ns3.cpp +++ /dev/null @@ -1,625 +0,0 @@ -/* Copyright (c) 2007-2021. 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. */ - -#include -#include - -#include "xbt/config.hpp" -#include "xbt/str.h" -#include "xbt/string.hpp" -#include "xbt/utility.hpp" - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "ns3/mobility-module.h" -#include "ns3/wifi-module.h" - -#include "network_ns3.hpp" -#include "ns3/ns3_simulator.hpp" - -#include "simgrid/kernel/routing/NetPoint.hpp" -#include "simgrid/kernel/routing/NetZoneImpl.hpp" -#include "simgrid/kernel/routing/WifiZone.hpp" -#include "simgrid/plugins/energy.h" -#include "simgrid/s4u/Engine.hpp" -#include "simgrid/s4u/NetZone.hpp" -#include "src/instr/instr_private.hpp" // TRACE_is_enabled(). FIXME: remove by subscribing tracing to the surf signals -#include "src/kernel/EngineImpl.hpp" -#include "src/surf/surf_interface.hpp" -#include "src/surf/xml/platf_private.hpp" // ClusterCreationArgs -#include "surf/surf.hpp" - -XBT_LOG_NEW_DEFAULT_SUBCATEGORY(res_ns3, res_network, "Network model based on ns-3"); - -/***************** - * Crude globals * - *****************/ - -extern std::map> flow_from_sock; -extern std::map> sink_from_sock; - -static ns3::InternetStackHelper stack; - -static int number_of_links = 1; -static int number_of_networks = 1; - -/* wifi globals */ -static ns3::WifiHelper wifi; -#if NS3_MINOR_VERSION < 33 -static ns3::YansWifiPhyHelper wifiPhy = ns3::YansWifiPhyHelper::Default(); -#else -static ns3::YansWifiPhyHelper wifiPhy; -#endif -static ns3::YansWifiChannelHelper wifiChannel = ns3::YansWifiChannelHelper::Default(); -static ns3::WifiMacHelper wifiMac; -static ns3::MobilityHelper mobility; - -simgrid::xbt::Extension NetPointNs3::EXTENSION_ID; - -static std::string transformIpv4Address(ns3::Ipv4Address from) -{ - std::stringstream sstream; - sstream << from; - return sstream.str(); -} - -NetPointNs3::NetPointNs3() : ns3_node_(ns3::CreateObject(0)) -{ - stack.Install(ns3_node_); -} - -static void resumeWifiDevice(ns3::Ptr device) -{ - device->GetPhy()->ResumeFromOff(); -} - -/************* - * Callbacks * - *************/ - -static void zoneCreation_cb(simgrid::s4u::NetZone const& zone) -{ - simgrid::kernel::routing::WifiZone* wifizone = dynamic_cast(zone.get_impl()); - if (wifizone == nullptr) - return; - -#if NS3_MINOR_VERSION < 32 - wifi.SetStandard(ns3::WIFI_PHY_STANDARD_80211n_5GHZ); -#else - wifi.SetStandard(ns3::WIFI_STANDARD_80211n_5GHZ); -#endif - - std::string ssid = wifizone->get_name(); - const char* mcs = wifizone->get_property("mcs"); - const char* nss = wifizone->get_property("nss"); - int mcs_value = mcs ? atoi(mcs) : 3; - int nss_value = nss ? atoi(nss) : 1; -#if NS3_MINOR_VERSION < 30 - xbt_assert(nss_value == 1 + (mcs_value / 8), - "On NS3 < 3.30, NSS value has to satisfy NSS == 1+(MCS/8) constraint. Bailing out"); -#endif - wifi.SetRemoteStationManager("ns3::ConstantRateWifiManager", "ControlMode", ns3::StringValue("HtMcs0"), "DataMode", - ns3::StringValue("HtMcs" + std::to_string(mcs_value))); - wifiPhy.SetChannel(wifiChannel.Create()); - wifiPhy.Set("Antennas", ns3::UintegerValue(nss_value)); - wifiPhy.Set("MaxSupportedTxSpatialStreams", ns3::UintegerValue(nss_value)); - wifiPhy.Set("MaxSupportedRxSpatialStreams", ns3::UintegerValue(nss_value)); -#if NS3_MINOR_VERSION > 33 - wifiPhy.Set("ChannelWidth", ns3::UintegerValue(40)); -#endif - wifiMac.SetType("ns3::ApWifiMac", "Ssid", ns3::SsidValue(ssid)); - - mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel"); - ns3::Ptr positionAllocS = ns3::CreateObject(); - positionAllocS->Add(ns3::Vector(0, 0, 255 * 100 * number_of_networks + 100 * number_of_links)); - - ns3::NetDeviceContainer netDevices; - NetPointNs3* access_point_netpoint_ns3 = wifizone->get_access_point()->extension(); - - ns3::Ptr access_point_ns3_node = access_point_netpoint_ns3->ns3_node_; - ns3::NodeContainer nodes = {access_point_ns3_node}; - std::vector hosts_netpoints = {access_point_netpoint_ns3}; - netDevices.Add(wifi.Install(wifiPhy, wifiMac, access_point_ns3_node)); - - wifiMac.SetType("ns3::StaWifiMac", "Ssid", ns3::SsidValue(ssid), "ActiveProbing", ns3::BooleanValue(false)); - - NetPointNs3* station_netpoint_ns3 = nullptr; - ns3::Ptr station_ns3_node = nullptr; - double distance; - double angle = 0; - int nb_stations = wifizone->get_all_hosts().size() - 1; - double step = 2 * M_PI / nb_stations; - for (auto station_host : wifizone->get_all_hosts()) { - station_netpoint_ns3 = station_host->get_netpoint()->extension(); - if (station_netpoint_ns3 == access_point_netpoint_ns3) - continue; - hosts_netpoints.push_back(station_netpoint_ns3); - distance = station_host->get_property("wifi_distance") ? atof(station_host->get_property("wifi_distance")) : 10.0; - positionAllocS->Add(ns3::Vector(distance * std::cos(angle), distance * std::sin(angle), - 255 * 100 * number_of_networks + 100 * number_of_links)); - angle += step; - station_ns3_node = station_netpoint_ns3->ns3_node_; - nodes.Add(station_ns3_node); - netDevices.Add(wifi.Install(wifiPhy, wifiMac, station_ns3_node)); - } - - const char* start_time = wifizone->get_property("start_time"); - int start_time_value = start_time ? atoi(start_time) : 0; - for (uint32_t i = 0; i < netDevices.GetN(); i++) { - ns3::Ptr device = ns3::StaticCast(netDevices.Get(i)); - device->GetPhy()->SetOffMode(); - ns3::Simulator::Schedule(ns3::Seconds(start_time_value), &resumeWifiDevice, device); - } - -#if NS3_MINOR_VERSION < 33 - // This fails with "The channel width does not uniquely identify an operating channel" on v3.34, - // so we specified the ChannelWidth of wifiPhy to 40, above, when creating wifiPhy with v3.34 and higher - ns3::Config::Set("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Phy/ChannelWidth", ns3::UintegerValue(40)); -#endif - - mobility.SetPositionAllocator(positionAllocS); - mobility.Install(nodes); - - ns3::Ipv4AddressHelper address; - 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"); - XBT_DEBUG("\tInterface stack '%s'", addr.c_str()); - ns3::Ipv4InterfaceContainer addresses = address.Assign(netDevices); - for (unsigned int i = 0; i < hosts_netpoints.size(); i++) { - hosts_netpoints[i]->ipv4_address_ = transformIpv4Address(addresses.GetAddress(i)); - } - - 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 clusterCreation_cb(simgrid::kernel::routing::ClusterCreationArgs const& cluster) -{ - ns3::NodeContainer Nodes; - - xbt_assert(cluster.topology == simgrid::kernel::routing::ClusterTopology::FLAT, - "NS-3 is supported only by flat clusters. Do not use with other topologies"); - - for (int const& i : cluster.radicals) { - // Create private link - std::string host_id = cluster.prefix + std::to_string(i) + cluster.suffix; - auto* src = simgrid::s4u::Host::by_name(host_id)->get_netpoint(); - auto* dst = simgrid::s4u::Engine::get_instance()->netpoint_by_name_or_null(cluster.router_id); - xbt_assert(dst != nullptr, "No router named %s", cluster.router_id.c_str()); - - ns3_add_direct_route(src, dst, cluster.bw, cluster.lat, cluster.id, - cluster.sharing_policy); // Any ns-3 route is symmetrical - - // Also add the host to the list of hosts that will be connected to the backbone - Nodes.Add(src->extension()->ns3_node_); - } - - // 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"); - 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*/, - std::vector const& link_list) -{ - /* ignoring routes from StarZone, not supported */ - if (not src || not dst) - return; - - if (link_list.size() == 1) { - auto const* link = static_cast(link_list[0]); - - 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); - XBT_DEBUG("\tLink (%s) bw:%fbps lat:%fs", link->get_cname(), link->get_bandwidth(), link->get_latency()); - - ns3_add_direct_route(src, dst, link->get_bandwidth(), link->get_latency(), link->get_name(), - link->get_sharing_policy()); - } else { - static bool warned_about_long_routes = false; - - if (not warned_about_long_routes) - XBT_WARN("Ignoring a route between %s and %s of length %zu: Only routes of length 1 are considered with ns-3.\n" - "WARNING: You can ignore this warning if your hosts can still communicate when only considering routes " - "of length 1.\n" - "WARNING: Remove long routes to avoid this harmless message; subsequent long routes will be silently " - "ignored.", - src->get_cname(), dst->get_cname(), link_list.size()); - warned_about_long_routes = true; - } -} - -/********* - * Model * - *********/ -void surf_network_model_init_NS3() -{ - auto net_model = std::make_shared("NS3 network model"); - auto* engine = simgrid::kernel::EngineImpl::get_instance(); - engine->add_model(net_model); - engine->get_netzone_root()->set_network_model(net_model); -} - -static simgrid::config::Flag - ns3_tcp_model("ns3/TcpModel", "The ns-3 tcp model can be: NewReno or Reno or Tahoe", "default"); -static simgrid::config::Flag ns3_seed( - "ns3/seed", - "The random seed provided to ns-3. Either 'time' to seed with time(), blank to not set (default), or a number.", "", - [](const std::string& val) { - if (val.length() == 0) - return; - if (strcasecmp(val.c_str(), "time") == 0) { - std::srand(time(NULL)); - ns3::RngSeedManager::SetSeed(std::rand()); - ns3::RngSeedManager::SetRun(std::rand()); - } else { - int v = xbt_str_parse_int( - val.c_str(), "Invalid value for option ns3/seed. It must be either 'time', a number, or left empty."); - ns3::RngSeedManager::SetSeed(v); - ns3::RngSeedManager::SetRun(v); - } - }); - -namespace simgrid { -namespace kernel { -namespace resource { - -NetworkNS3Model::NetworkNS3Model(const std::string& name) : NetworkModel(name) -{ - xbt_assert(not sg_link_energy_is_inited(), - "LinkEnergy plugin and ns-3 network models are not compatible. Are you looking for Ecofen, maybe?"); - - NetPointNs3::EXTENSION_ID = routing::NetPoint::extension_create(); - - ns3::Config::SetDefault("ns3::TcpSocket::SegmentSize", ns3::UintegerValue(1000)); - ns3::Config::SetDefault("ns3::TcpSocket::DelAckCount", ns3::UintegerValue(1)); - ns3::Config::SetDefault("ns3::TcpSocketBase::Timestamp", ns3::BooleanValue(false)); - - auto TcpProtocol = ns3_tcp_model.get(); - if (TcpProtocol == "default") { - /* nothing to do */ - - } else if (TcpProtocol == "Reno" || TcpProtocol == "NewReno" || TcpProtocol == "Tahoe") { - XBT_INFO("Switching Tcp protocol to '%s'", TcpProtocol.c_str()); - ns3::Config::SetDefault("ns3::TcpL4Protocol::SocketType", ns3::StringValue("ns3::Tcp" + TcpProtocol)); - - } else { - xbt_die("The ns3/TcpModel must be: NewReno or Reno or Tahoe"); - } - - routing::NetPoint::on_creation.connect([](routing::NetPoint& pt) { - pt.extension_set(new NetPointNs3()); - XBT_VERB("Declare SimGrid's %s within ns-3", pt.get_cname()); - }); - - s4u::Engine::on_platform_created.connect([]() { - /* Create the ns3 topology based on routing strategy */ - ns3::GlobalRouteManager::BuildGlobalRoutingDatabase(); - ns3::GlobalRouteManager::InitializeRoutes(); - }); - routing::on_cluster_creation.connect(&clusterCreation_cb); - routing::NetZoneImpl::on_route_creation.connect(&routeCreation_cb); - s4u::NetZone::on_seal.connect(&zoneCreation_cb); -} - -LinkImpl* NetworkNS3Model::create_link(const std::string& name, const std::vector& bandwidths) -{ - xbt_assert(bandwidths.size() == 1, "ns-3 links must use only 1 bandwidth."); - auto* link = new LinkNS3(name, bandwidths[0]); - link->set_model(this); - return link; -} - -LinkImpl* NetworkNS3Model::create_wifi_link(const std::string& name, const std::vector& bandwidths) -{ - auto* link = create_link(name, bandwidths); - link->set_sharing_policy(s4u::Link::SharingPolicy::WIFI, {}); - return link; -} - -Action* NetworkNS3Model::communicate(s4u::Host* src, s4u::Host* dst, double size, double rate) -{ - xbt_assert(rate == -1, - "Communication over ns-3 links cannot specify a specific rate. Please use -1 as a value instead of %f.", - rate); - return new NetworkNS3Action(this, size, src, dst); -} - -double NetworkNS3Model::next_occurring_event(double now) -{ - double time_to_next_flow_completion = 0.0; - XBT_DEBUG("ns3_next_occurring_event"); - - // get the first relevant value from the running_actions list - - // If there is no comms in NS-3, then we do not move it forward. - // We will synchronize NS-3 with SimGrid when starting a new communication. - // (see NetworkNS3Action::NetworkNS3Action() for more details on this point) - if (get_started_action_set()->empty() || now == 0.0) - return -1.0; - - XBT_DEBUG("doing a ns3 simulation for a duration of %f", now); - ns3_simulator(now); - time_to_next_flow_completion = ns3::Simulator::Now().GetSeconds() - surf_get_clock(); - // NS-3 stops as soon as a flow ends, - // but it does not process the other flows that may finish at the same (simulated) time. - // If another flow ends at the same time, time_to_next_flow_completion = 0 - if (double_equals(time_to_next_flow_completion, 0, sg_surf_precision)) - time_to_next_flow_completion = 0.0; - - XBT_DEBUG("min : %f", now); - XBT_DEBUG("ns3 time : %f", ns3::Simulator::Now().GetSeconds()); - XBT_DEBUG("surf time : %f", surf_get_clock()); - XBT_DEBUG("Next completion %f :", time_to_next_flow_completion); - - return time_to_next_flow_completion; -} - -void NetworkNS3Model::update_actions_state(double now, double delta) -{ - static std::vector socket_to_destroy; - - std::string ns3_socket; - for (const auto& elm : flow_from_sock) { - ns3_socket = elm.first; - SgFlow* sgFlow = elm.second; - NetworkNS3Action* action = sgFlow->action_; - XBT_DEBUG("Processing flow %p (socket %s, action %p)", sgFlow, ns3_socket.c_str(), action); - // 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_; - if (remains > 0) - action->set_remains(remains); - - if (TRACE_is_enabled() && action->get_state() == kernel::resource::Action::State::STARTED) { - double data_delta_sent = sgFlow->sent_bytes_ - action->last_sent_; - - std::vector route = std::vector(); - - action->get_src().route_to(&action->get_dst(), route, nullptr); - for (auto const& link : route) - 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_; - } - - if ((sgFlow->finished_) && (remains <= 0)) { // finished_ should not become true before remains gets to 0, but it - // sometimes does. Let's play safe, here. - socket_to_destroy.push_back(ns3_socket); - XBT_DEBUG("Destroy socket %s of action %p", ns3_socket.c_str(), action); - action->set_remains(0); - action->finish(Action::State::FINISHED); - } else { - XBT_DEBUG("Socket %s sent %u bytes out of %u (%u remaining)", ns3_socket.c_str(), sgFlow->sent_bytes_, - sgFlow->total_bytes_, sgFlow->remaining_); - } - } - - while (not socket_to_destroy.empty()) { - ns3_socket = socket_to_destroy.back(); - socket_to_destroy.pop_back(); - SgFlow* flow = flow_from_sock.at(ns3_socket); - if (XBT_LOG_ISENABLED(res_ns3, xbt_log_priority_debug)) { - XBT_DEBUG("Removing socket %s of action %p", ns3_socket.c_str(), flow->action_); - } - delete flow; - flow_from_sock.erase(ns3_socket); - sink_from_sock.erase(ns3_socket); - } -} - -/************ - * Resource * - ************/ - -LinkNS3::LinkNS3(const std::string& name, double bandwidth) : LinkImpl(name) -{ - bandwidth_.peak = bandwidth; -} - -LinkNS3::~LinkNS3() = default; - -void LinkNS3::apply_event(profile::Event*, double) -{ - THROW_UNIMPLEMENTED; -} - -void LinkNS3::set_bandwidth_profile(profile::Profile* profile) -{ - xbt_assert(profile == nullptr, "The ns-3 network model doesn't support bandwidth profiles"); -} - -void LinkNS3::set_latency_profile(profile::Profile* profile) -{ - xbt_assert(profile == nullptr, "The ns-3 network model doesn't support latency profiles"); -} - -void LinkNS3::set_latency(double latency) -{ - latency_.peak = latency; -} - -void LinkNS3::set_sharing_policy(s4u::Link::SharingPolicy policy, const s4u::NonLinearResourceCb& cb) -{ - sharing_policy_ = policy; -} -/********** - * Action * - **********/ - -NetworkNS3Action::NetworkNS3Action(Model* model, double totalBytes, s4u::Host* src, s4u::Host* dst) - : NetworkAction(model, *src, *dst, totalBytes, false) -{ - // ns-3 fails when src = dst, so avoid the problem by considering that communications are infinitely fast on the - // loopback that does not exists - if (src == dst) { - static bool warned = false; - if (not warned) { - XBT_WARN("Sending from a host %s to itself is not supported by ns-3. Every such communication finishes " - "immediately upon startup.", - src->get_cname()); - warned = true; - } - finish(Action::State::FINISHED); - return; - } - - // 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)) { - XBT_DEBUG("Synchronizing NS-3 (time %f) with SimGrid (time %f)", ns3::Simulator::Now().GetSeconds(), - surf_get_clock()); - ns3_simulator(surf_get_clock() - ns3::Simulator::Now().GetSeconds()); - } - } - - static uint16_t port_number = 1; - - ns3::Ptr src_node = src->get_netpoint()->extension()->ns3_node_; - ns3::Ptr dst_node = dst->get_netpoint()->extension()->ns3_node_; - - std::string& addr = dst->get_netpoint()->extension()->ipv4_address_; - xbt_assert(not addr.empty(), "Element %s is unknown to ns-3. Is it connected to any one-hop link?", - dst->get_netpoint()->get_cname()); - - ns3::PacketSinkHelper sink("ns3::TcpSocketFactory", ns3::InetSocketAddress(ns3::Ipv4Address::GetAny(), port_number)); - ns3::ApplicationContainer apps = sink.Install(dst_node); - - ns3::Ptr sock = ns3::Socket::CreateSocket(src_node, ns3::TcpSocketFactory::GetTypeId()); - - XBT_DEBUG("Create socket %s for a flow of %.0f Bytes from %s to %s with Interface %s", - transform_socket_ptr(sock).c_str(), totalBytes, src->get_cname(), dst->get_cname(), addr.c_str()); - - flow_from_sock.insert({transform_socket_ptr(sock), new SgFlow(totalBytes, this)}); - sink_from_sock.insert({transform_socket_ptr(sock), apps}); - - sock->Bind(ns3::InetSocketAddress(port_number)); - ns3::Simulator::ScheduleNow(&start_flow, sock, addr.c_str(), port_number); - - port_number = 1 + (port_number % UINT16_MAX); - if (port_number == 1) - XBT_WARN("Too many connections! Port number is saturated. Trying to use the oldest ports."); -} - -void NetworkNS3Action::suspend() -{ - THROW_UNIMPLEMENTED; -} - -void NetworkNS3Action::resume() -{ - THROW_UNIMPLEMENTED; -} - -std::list NetworkNS3Action::get_links() const -{ - THROW_UNIMPLEMENTED; -} -void NetworkNS3Action::update_remains_lazy(double /*now*/) -{ - THROW_IMPOSSIBLE; -} - -} // namespace resource -} // namespace kernel -} // namespace simgrid - -void ns3_simulator(double maxSeconds) -{ - ns3::EventId id; - if (maxSeconds > 0.0) // If there is a maximum amount of time to run - id = ns3::Simulator::Schedule(ns3::Seconds(maxSeconds), &ns3::Simulator::Stop); - - XBT_DEBUG("Start simulator for at most %fs (current time: %f)", maxSeconds, surf_get_clock()); - ns3::Simulator::Run(); - XBT_DEBUG("Simulator stopped at %fs", ns3::Simulator::Now().GetSeconds()); - - if (maxSeconds > 0.0) - id.Cancel(); -} - -void ns3_add_direct_route(simgrid::kernel::routing::NetPoint* src, simgrid::kernel::routing::NetPoint* dst, double bw, - double lat, const std::string& link_name, simgrid::s4u::Link::SharingPolicy policy) -{ - ns3::Ipv4AddressHelper address; - ns3::NetDeviceContainer netA; - - // create link ns3 - auto* host_src = src->extension(); - auto* host_dst = dst->extension(); - - 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()); - - xbt_assert(policy != simgrid::s4u::Link::SharingPolicy::WIFI, - "The wifi sharing policy is not supported for links. You want to use a wifi zone (see documentation)."); - - ns3::PointToPointHelper pointToPoint; - - XBT_DEBUG("\tAdd PTP from %s to %s bw:'%f Bps' lat:'%fs'", src->get_cname(), dst->get_cname(), 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))); - - netA.Add(pointToPoint.Install(host_src->ns3_node_, host_dst->ns3_node_)); - - 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"); - XBT_DEBUG("\tInterface stack '%s'", addr.c_str()); - - auto addresses = address.Assign(netA); - - host_src->ipv4_address_ = transformIpv4Address(addresses.GetAddress(0)); - host_dst->ipv4_address_ = transformIpv4Address(addresses.GetAddress(1)); - - 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++; - } -}