-/* 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 "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;
/* 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 *
*************/
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
+ 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)));
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<ns3::WifiNetDevice> device = ns3::StaticCast<ns3::WifiNetDevice>(netDevices.Get(i));
+ device->GetPhy()->SetOffMode();
+ ns3::Simulator::Schedule(ns3::Seconds(start_time_value), &resumeWifiDevice, device);
+ }
+
ns3::Config::Set("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Phy/ChannelWidth", ns3::UintegerValue(40));
mobility.SetPositionAllocator(positionAllocS);
address.SetBase(addr.c_str(), "255.255.0.0");
XBT_DEBUG("\tInterface stack '%s'", addr.c_str());
ns3::Ipv4InterfaceContainer addresses = address.Assign(netDevices);
- for (int i = 0; i < hosts_netpoints.size(); i++) {
+ for (unsigned int i = 0; i < hosts_netpoints.size(); i++) {
hosts_netpoints[i]->ipv4_address_ = transformIpv4Address(addresses.GetAddress(i));
}
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);
+ return new LinkNS3(name, bandwidths[0], policy);
}
Action* NetworkNS3Model::communicate(s4u::Host* src, s4u::Host* dst, double size, double rate)
ns3_socket = elm.first;
SgFlow* sgFlow = elm.second;
NetworkNS3Action * action = sgFlow->action_;
- XBT_DEBUG("Processing socket %p (action %p)",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.
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;
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)){
}
}
- 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_;
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);
}
