-/* 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_);
}
-WifiZone::WifiZone(const std::string& name_, simgrid::s4u::Host* host_, ns3::Ptr<ns3::Node> ap_node_,
- ns3::Ptr<ns3::YansWifiChannel> channel_, int mcs_, int nss_, int network_, int link_)
- : name(name_)
- , host(host_)
- , ap_node(ap_node_)
- , channel(channel_)
- , mcs(mcs_)
- , nss(nss_)
- , network(network_)
- , link(link_)
+static void resumeWifiDevice(ns3::Ptr<ns3::WifiNetDevice> device)
{
- n_sta_nodes = 0;
- wifi_zones[name_] = this;
+ device->GetPhy()->ResumeFromOff();
}
-bool WifiZone::is_ap(ns3::Ptr<ns3::Node> node)
-{
- for (std::pair<std::string, WifiZone*> zone : wifi_zones)
- if (zone.second->get_ap_node() == node)
- return true;
- return false;
-}
+/*************
+ * Callbacks *
+ *************/
-WifiZone* WifiZone::by_name(const std::string& name)
+static void zoneCreation_cb(simgrid::s4u::NetZone const& zone)
{
- WifiZone* zone;
- try {
- zone = wifi_zones.at(name);
- } catch (const std::out_of_range& oor) {
- return nullptr;
+ 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);
+#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));
+ 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));
}
- return zone;
-}
-std::unordered_map<std::string, WifiZone*> WifiZone::wifi_zones;
+ 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);
+ }
-static void initialize_ns3_wifi()
-{
- wifi.SetStandard(ns3::WIFI_PHY_STANDARD_80211n_5GHZ);
+ ns3::Config::Set("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Phy/ChannelWidth", ns3::UintegerValue(40));
- for (auto host : simgrid::s4u::Engine::get_instance()->get_all_hosts()) {
- const char* wifi_link = host->get_property("wifi_link");
- const char* wifi_mcs = host->get_property("wifi_mcs");
- const char* wifi_nss = host->get_property("wifi_nss");
+ mobility.SetPositionAllocator(positionAllocS);
+ mobility.Install(nodes);
- if (wifi_link)
- new WifiZone(wifi_link, host, host->get_netpoint()->extension<NetPointNs3>()->ns3_node_, wifiChannel.Create(),
- wifi_mcs ? atoi(wifi_mcs) : 3, wifi_nss ? atoi(wifi_nss) : 1, 0, 0);
+ 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));
}
-}
-/*************
- * Callbacks *
- *************/
+ 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;
- for (int const& i : *cluster.radicals) {
+ 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();
simgrid::kernel::routing::NetPoint* /*gw_dst*/,
std::vector<simgrid::kernel::resource::LinkImpl*> 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<simgrid::kernel::resource::LinkNS3*>(link_list[0]);
*********/
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>("NS3 network model");
+ 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>
static simgrid::config::Flag<std::string> 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.", "",
- [](std::string val) {
+ [](const std::string& val) {
if (val.length() == 0)
return;
if (strcasecmp(val.c_str(), "time") == 0) {
namespace kernel {
namespace resource {
-NetworkNS3Model::NetworkNS3Model() : NetworkModel(Model::UpdateAlgo::FULL)
+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?");
- all_existing_models.push_back(this);
-
NetPointNs3::EXTENSION_ID = routing::NetPoint::extension_create<NetPointNs3>();
ns3::Config::SetDefault("ns3::TcpSocket::SegmentSize", ns3::UintegerValue(1000));
});
routing::on_cluster_creation.connect(&clusterCreation_cb);
s4u::NetZone::on_route_creation.connect(&routeCreation_cb);
+ s4u::NetZone::on_seal.connect(&zoneCreation_cb);
}
-LinkImpl* NetworkNS3Model::create_link(const std::string& name, const std::vector<double>& bandwidths, double latency,
- s4u::Link::SharingPolicy policy)
+LinkImpl* NetworkNS3Model::create_link(const std::string& name, const std::vector<double>& bandwidths)
{
xbt_assert(bandwidths.size() == 1, "ns-3 links must use only 1 bandwidth.");
- return new LinkNS3(this, name, bandwidths[0], latency, policy);
+ return (new LinkNS3(name, bandwidths[0]))->set_model(this);
+}
+
+LinkImpl* NetworkNS3Model::create_wifi_link(const std::string& name, const std::vector<double>& bandwidths)
+{
+ return create_link(name, bandwidths)->set_sharing_policy(s4u::Link::SharingPolicy::WIFI);
}
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_;
- XBT_DEBUG("Processing socket %p (action %p)",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) : LinkImpl(name)
{
bandwidth_.peak = bandwidth;
- latency_.peak = latency;
-
- /* If wifi, create the wifizone now. If not, don't do anything: the links will be created in routeCreate_cb */
-
- if (policy == simgrid::s4u::Link::SharingPolicy::WIFI) {
- static bool wifi_init = false;
- if (!wifi_init) {
- initialize_ns3_wifi();
- wifi_init = true;
- }
-
- ns3::NetDeviceContainer netA;
- WifiZone* zone = WifiZone::by_name(name);
- xbt_assert(zone != nullptr, "Link name '%s' does not match the 'wifi_link' property of a host.", name.c_str());
- auto* netpoint_ns3 = zone->get_host()->get_netpoint()->extension<NetPointNs3>();
-
- wifi.SetRemoteStationManager("ns3::ConstantRateWifiManager", "ControlMode", ns3::StringValue("HtMcs0"), "DataMode",
- ns3::StringValue("HtMcs" + std::to_string(zone->get_mcs())));
-
- wifiPhy.SetChannel(zone->get_channel());
- wifiPhy.Set("Antennas", ns3::UintegerValue(zone->get_nss()));
- wifiPhy.Set("MaxSupportedTxSpatialStreams", ns3::UintegerValue(zone->get_nss()));
- wifiPhy.Set("MaxSupportedRxSpatialStreams", ns3::UintegerValue(zone->get_nss()));
-
- wifiMac.SetType("ns3::ApWifiMac",
- "Ssid", ns3::SsidValue(name));
-
- netA.Add(wifi.Install(wifiPhy, wifiMac, zone->get_ap_node()));
-
- ns3::Ptr<ns3::ListPositionAllocator> positionAllocS = ns3::CreateObject<ns3::ListPositionAllocator>();
- positionAllocS->Add(ns3::Vector(0, 0, 0));
- mobility.SetPositionAllocator(positionAllocS);
- mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
- mobility.Install(zone->get_ap_node());
-
- 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());
- auto addresses = address.Assign(netA);
- zone->set_network(number_of_networks);
- zone->set_link(number_of_links);
-
- netpoint_ns3->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++;
- }
- }
- s4u::Link::on_creation(*this->get_iface());
}
LinkNS3::~LinkNS3() = default;
{
THROW_UNIMPLEMENTED;
}
-void LinkNS3::set_bandwidth_profile(profile::Profile*)
+
+LinkImpl* LinkNS3::set_bandwidth_profile(profile::Profile* profile)
{
- xbt_die("The ns-3 network model doesn't support bandwidth profiles");
+ xbt_assert(profile == nullptr, "The ns-3 network model doesn't support bandwidth profiles");
+ return this;
}
-void LinkNS3::set_latency_profile(profile::Profile*)
+
+LinkImpl* LinkNS3::set_latency_profile(profile::Profile* profile)
{
- xbt_die("The ns-3 network model doesn't support latency profiles");
+ xbt_assert(profile == nullptr, "The ns-3 network model doesn't support latency profiles");
+ return this;
}
+LinkImpl* LinkNS3::set_latency(double latency)
+{
+ latency_.peak = latency;
+ return this;
+}
+
+LinkImpl* LinkNS3::set_sharing_policy(s4u::Link::SharingPolicy policy)
+{
+ sharing_policy_ = policy;
+ return this;
+}
/**********
* 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());
+ 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());
}
}
- XBT_DEBUG("Communicate from %s to %s", src->get_cname(), dst->get_cname());
-
- static int port_number = 1025; // Port number is limited from 1025 to 65 000
+ static uint16_t port_number = 1;
ns3::Ptr<ns3::Node> src_node = src->get_netpoint()->extension<NetPointNs3>()->ns3_node_;
ns3::Ptr<ns3::Node> dst_node = dst->get_netpoint()->extension<NetPointNs3>()->ns3_node_;
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());
- XBT_DEBUG("ns3: Create flow of %.0f Bytes from %s to %s with Interface %s", totalBytes, src->get_cname(),
- dst->get_cname(), addr.c_str());
ns3::PacketSinkHelper sink("ns3::TcpSocketFactory", ns3::InetSocketAddress(ns3::Ipv4Address::GetAny(), port_number));
ns3::ApplicationContainer apps = sink.Install(dst_node);
ns3::Ptr<ns3::Socket> 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++;
- if(port_number > 65000){
- port_number = 1025;
+ 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.");
- }
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_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());
- if (policy == simgrid::s4u::Link::SharingPolicy::WIFI) {
- auto a = host_src->ns3_node_;
- auto b = host_dst->ns3_node_;
- xbt_assert(WifiZone::is_ap(a) != WifiZone::is_ap(b),
- "A wifi route can only exist between an access point node and a station node.");
+ 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::Ptr<ns3::Node> apNode = WifiZone::is_ap(a) ? a : b;
- ns3::Ptr<ns3::Node> staNode = apNode == a ? b : a;
+ ns3::PointToPointHelper pointToPoint;
- WifiZone* zone = WifiZone::by_name(link_name);
+ 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)));
- wifi.SetRemoteStationManager("ns3::ConstantRateWifiManager", "ControlMode", ns3::StringValue("HtMcs0"), "DataMode",
- ns3::StringValue("HtMcs" + std::to_string(zone->get_mcs())));
+ netA.Add(pointToPoint.Install(host_src->ns3_node_, host_dst->ns3_node_));
- wifiPhy.SetChannel(zone->get_channel());
- wifiPhy.Set("Antennas", ns3::UintegerValue(zone->get_nss()));
- wifiPhy.Set("MaxSupportedTxSpatialStreams", ns3::UintegerValue(zone->get_nss()));
- wifiPhy.Set("MaxSupportedRxSpatialStreams", ns3::UintegerValue(zone->get_nss()));
-
- wifiMac.SetType ("ns3::StaWifiMac",
- "Ssid", ns3::SsidValue(link_name),
- "ActiveProbing", ns3::BooleanValue(false));
-
- netA.Add(wifi.Install(wifiPhy, wifiMac, staNode));
+ 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::Config::Set("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Phy/ChannelWidth", ns3::UintegerValue(40));
+ auto addresses = address.Assign(netA);
- simgrid::kernel::routing::NetPoint* sta_netpoint = WifiZone::is_ap(host_src->ns3_node_) ? dst : src;
- const char* wifi_distance = simgrid::s4u::Host::by_name(sta_netpoint->get_name())->get_property("wifi_distance");
- ns3::Ptr<ns3::ListPositionAllocator> positionAllocS = ns3::CreateObject<ns3::ListPositionAllocator>();
- positionAllocS->Add(ns3::Vector(wifi_distance ? atof(wifi_distance) : 10.0, 0, 0));
- mobility.SetPositionAllocator(positionAllocS);
- mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
- mobility.Install(staNode);
+ host_src->ipv4_address_ = transformIpv4Address(addresses.GetAddress(0));
+ host_dst->ipv4_address_ = transformIpv4Address(addresses.GetAddress(1));
- std::string addr = simgrid::xbt::string_printf("%d.%d.0.0", zone->get_network(), zone->get_link());
- address.SetBase(addr.c_str(), "255.255.0.0", ("0.0.0." + std::to_string(zone->get_n_sta_nodes() + 2)).c_str());
- zone->add_sta_node();
- XBT_DEBUG("\tInterface stack '%s'", addr.c_str());
- auto addresses = address.Assign(netA);
- 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 {
- 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++;
- }
+ number_of_links++;
}
}
