-/* Copyright (c) 2007-2020. The SimGrid Team. All rights reserved. */
+/* 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 "xbt/string.hpp"
#include "xbt/utility.hpp"
+#include <ns3/application-container.h>
#include <ns3/core-module.h>
#include <ns3/csma-helper.h>
+#include <ns3/event-id.h>
#include <ns3/global-route-manager.h>
#include <ns3/internet-stack-helper.h>
#include <ns3/ipv4-address-helper.h>
#include <ns3/packet-sink-helper.h>
#include <ns3/point-to-point-helper.h>
-#include <ns3/application-container.h>
-#include <ns3/event-id.h>
#include "ns3/mobility-module.h"
#include "ns3/wifi-module.h"
#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"
#include "surf/surf.hpp"
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(ns3, surf, "Logging specific to the SURF network ns-3 module");
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(res_ns3, res_network, "Network model based on ns-3");
/*****************
* Crude globals *
*****************/
-extern std::map<std::string, SgFlow*> flow_from_sock;
-extern std::map<std::string, ns3::ApplicationContainer> sink_from_sock;
+extern std::map<std::string, SgFlow*, std::less<>> flow_from_sock;
+extern std::map<std::string, ns3::ApplicationContainer, std::less<>> sink_from_sock;
static ns3::InternetStackHelper stack;
-static int number_of_links = 1;
+static int number_of_links = 1;
static int number_of_networks = 1;
/* wifi globals */
static ns3::WifiHelper wifi;
-static ns3::YansWifiPhyHelper wifiPhy = ns3::YansWifiPhyHelper::Default();
+#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;
stack.Install(ns3_node_);
}
+static void resumeWifiDevice(ns3::Ptr<ns3::WifiNetDevice> device)
+{
+ device->GetPhy()->ResumeFromOff();
+}
+
/*************
* Callbacks *
*************/
-static void zoneCreation_cb(simgrid::s4u::NetZone const& zone) {
- simgrid::kernel::routing::WifiZone* wifizone = dynamic_cast<simgrid::kernel::routing::WifiZone*> (zone.get_impl());
- if (wifizone == nullptr) return;
+static void zoneCreation_cb(simgrid::s4u::NetZone const& zone)
+{
+ simgrid::kernel::routing::WifiZone* wifizone = dynamic_cast<simgrid::kernel::routing::WifiZone*>(zone.get_impl());
+ if (wifizone == nullptr)
+ return;
#if NS3_MINOR_VERSION < 32
- wifi.SetStandard(ns3::WIFI_PHY_STANDARD_80211n_5GHZ);
+ wifi.SetStandard(ns3::WIFI_PHY_STANDARD_80211n_5GHZ);
#else
- wifi.SetStandard(ns3::WIFI_STANDARD_80211n_5GHZ);
+ 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;
+ 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
- if(nss_value != 1+(mcs_value/8))
- xbt_die("On NS3 < 3.30, NSS value has to satisfy NSS == 1+(MCS/8) constraint. Bailing out");
+ if (nss_value != 1 + (mcs_value / 8))
+ xbt_die("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));
- wifiMac.SetType("ns3::ApWifiMac",
- "Ssid", ns3::SsidValue(ssid));
-
- mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
- ns3::Ptr<ns3::ListPositionAllocator> positionAllocS = ns3::CreateObject<ns3::ListPositionAllocator>();
- 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<NetPointNs3>();
-
- ns3::Ptr<ns3::Node> access_point_ns3_node = access_point_netpoint_ns3->ns3_node_;
- ns3::NodeContainer nodes = {access_point_ns3_node};
- std::vector<NetPointNs3*> 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<ns3::Node> 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<NetPointNs3>();
- 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));
- }
+ 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));
+ wifiMac.SetType("ns3::ApWifiMac", "Ssid", ns3::SsidValue(ssid));
+
+ mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
+ ns3::Ptr<ns3::ListPositionAllocator> positionAllocS = ns3::CreateObject<ns3::ListPositionAllocator>();
+ 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<NetPointNs3>();
+
+ ns3::Ptr<ns3::Node> access_point_ns3_node = access_point_netpoint_ns3->ns3_node_;
+ ns3::NodeContainer nodes = {access_point_ns3_node};
+ std::vector<NetPointNs3*> 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<ns3::Node> 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<NetPointNs3>();
+ 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));
+ }
- ns3::Config::Set("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Phy/ChannelWidth", ns3::UintegerValue(40));
+ const char* start_time = wifizone->get_property("start_time");
+ int start_time_value = start_time ? atoi(start_time) : 0;
+ for (uint32_t i = 0; i < netDevices.GetN(); i++) {
+ ns3::Ptr<ns3::WifiNetDevice> device = ns3::StaticCast<ns3::WifiNetDevice>(netDevices.Get(i));
+ device->GetPhy()->SetOffMode();
+ ns3::Simulator::Schedule(ns3::Seconds(start_time_value), &resumeWifiDevice, device);
+ }
- mobility.SetPositionAllocator(positionAllocS);
- mobility.Install(nodes);
+ ns3::Config::Set("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Phy/ChannelWidth", ns3::UintegerValue(40));
- 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));
- }
+ mobility.SetPositionAllocator(positionAllocS);
+ mobility.Install(nodes);
- 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++;
- }
+ 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)
*********/
void surf_network_model_init_NS3()
{
- xbt_assert(surf_network_model == nullptr, "Cannot set the network model twice");
-
- surf_network_model = new simgrid::kernel::resource::NetworkNS3Model();
+ auto net_model = std::make_shared<simgrid::kernel::resource::NetworkNS3Model>();
+ simgrid::kernel::EngineImpl::get_instance()->add_model(net_model);
+ simgrid::s4u::Engine::get_instance()->get_netzone_root()->get_impl()->set_network_model(net_model);
}
static simgrid::config::Flag<std::string>
namespace kernel {
namespace resource {
-NetworkNS3Model::NetworkNS3Model() : NetworkModel(Model::UpdateAlgo::FULL)
+NetworkNS3Model::NetworkNS3Model()
{
xbt_assert(not sg_link_energy_is_inited(),
"LinkEnergy plugin and ns-3 network models are not compatible. Are you looking for Ecofen, maybe?");
- all_existing_models.push_back(this);
-
NetPointNs3::EXTENSION_ID = routing::NetPoint::extension_create<NetPointNs3>();
ns3::Config::SetDefault("ns3::TcpSocket::SegmentSize", ns3::UintegerValue(1000));
s4u::NetZone::on_seal.connect(&zoneCreation_cb);
}
-LinkImpl* NetworkNS3Model::create_link(const std::string& name, const std::vector<double>& bandwidths, double latency,
+LinkImpl* NetworkNS3Model::create_link(const std::string& name, const std::vector<double>& bandwidths,
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, policy);
+ auto link = new LinkNS3(name, bandwidths[0], policy);
+ link->set_model(this);
+ return link;
}
Action* NetworkNS3Model::communicate(s4u::Host* src, s4u::Host* dst, double size, double rate)
double time_to_next_flow_completion = 0.0;
XBT_DEBUG("ns3_next_occurring_event");
- //get the first relevant value from the running_actions list
+ // 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.
// 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))
+ if (double_equals(time_to_next_flow_completion, 0, sg_surf_precision))
time_to_next_flow_completion = 0.0;
XBT_DEBUG("min : %f", now);
std::string ns3_socket;
for (const auto& elm : flow_from_sock) {
- ns3_socket = elm.first;
- SgFlow* sgFlow = elm.second;
- NetworkNS3Action * action = sgFlow->action_;
+ 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)
+ if (remains > 0)
action->set_remains(remains);
if (TRACE_is_enabled() && action->get_state() == kernel::resource::Action::State::STARTED) {
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.
+ 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);
ns3_socket = socket_to_destroy.back();
socket_to_destroy.pop_back();
SgFlow* flow = flow_from_sock.at(ns3_socket);
- if (XBT_LOG_ISENABLED(ns3, xbt_log_priority_debug)) {
+ 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;
* Resource *
************/
-LinkNS3::LinkNS3(NetworkNS3Model* model, const std::string& name, double bandwidth, double latency,
- s4u::Link::SharingPolicy policy)
- : LinkImpl(model, name, nullptr), sharing_policy_(policy)
+LinkNS3::LinkNS3(const std::string& name, double bandwidth, s4u::Link::SharingPolicy policy)
+ : LinkImpl(name), sharing_policy_(policy)
{
bandwidth_.peak = bandwidth;
- latency_.peak = latency;
-
- s4u::Link::on_creation(*this->get_iface());
}
LinkNS3::~LinkNS3() = default;
xbt_die("The ns-3 network model doesn't support latency profiles");
}
+LinkImpl* LinkNS3::set_latency(double latency)
+{
+ latency_.peak = latency;
+ return this;
+}
/**********
* Action *
**********/
}
// 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());
+ 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());
}
}
s4u::Link::on_communicate(*this);
}
-void NetworkNS3Action::suspend() {
+void NetworkNS3Action::suspend()
+{
THROW_UNIMPLEMENTED;
}
-void NetworkNS3Action::resume() {
+void NetworkNS3Action::resume()
+{
THROW_UNIMPLEMENTED;
}
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 ();
+ ns3::Simulator::Run();
XBT_DEBUG("Simulator stopped at %fs", ns3::Simulator::Now().GetSeconds());
- if(maxSeconds > 0.0)
+ if (maxSeconds > 0.0)
id.Cancel();
}
xbt_assert(host_dst != nullptr, "Network element %s does not seem to be ns-3-ready", dst->get_cname());
if (policy == simgrid::s4u::Link::SharingPolicy::WIFI) {
- xbt_die("The wifi sharing policy is not supported for links. You want to use a wifi zone (see documentation).");
+ xbt_die("The wifi sharing policy is not supported for links. You want to use a wifi zone (see documentation).");
} else {
ns3::PointToPointHelper pointToPoint;
