X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/8bb0a4c740aeef584818cc72196508d1b483100b..bbe1883648093b16f04fc6b017ff745ffa22de5f:/src/surf/network_ns3.cpp diff --git a/src/surf/network_ns3.cpp b/src/surf/network_ns3.cpp index 4c7766819a..be6a65d174 100644 --- a/src/surf/network_ns3.cpp +++ b/src/surf/network_ns3.cpp @@ -1,37 +1,47 @@ -/* Copyright (c) 2007-2015. The SimGrid Team. - * All rights reserved. */ +/* Copyright (c) 2007-2019. 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 "ns3/core-module.h" -#include "ns3/node.h" +#include "xbt/config.hpp" +#include "xbt/string.hpp" +#include "xbt/utility.hpp" -#include "ns3/ns3_interface.h" -#include "ns3/ns3_simulator.h" -#include "src/surf/network_ns3.hpp" +#include +#include +#include +#include +#include +#include +#include +#include +#include -#include "src/surf/HostImpl.hpp" -#include "src/surf/surf_private.h" -#include "simgrid/sg_config.h" -#include "src/instr/instr_private.h" // TRACE_is_enabled(). FIXME: remove by subscribing tracing to the surf signals +#include "network_ns3.hpp" +#include "ns3/ns3_simulator.hpp" -#include "simgrid/s4u/As.hpp" +#include "simgrid/kernel/routing/NetPoint.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/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 NS3 module"); +XBT_LOG_NEW_DEFAULT_SUBCATEGORY(ns3, surf, "Logging specific to the SURF network ns-3 module"); -int NS3_EXTENSION_ID; - -xbt_dynar_t IPV4addr = xbt_dynar_new(sizeof(char*),free); -static double time_to_next_flow_completion = -1; +std::vector IPV4addr; /***************** * Crude globals * *****************/ -extern xbt_dict_t flowFromSock; +extern std::map flow_from_sock; +extern std::map sink_from_sock; static ns3::InternetStackHelper stack; static ns3::NodeContainer nodes; @@ -42,165 +52,82 @@ 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; -static int port_number = 1025; //Port number is limited from 1025 to 65 000 + +simgrid::xbt::Extension NetPointNs3::EXTENSION_ID; + +NetPointNs3::NetPointNs3() : ns3_node_(ns3::CreateObject(0)) +{ + stack.Install(ns3_node_); + nodes.Add(ns3_node_); + node_num = number_of_nodes++; +} /************* * Callbacks * *************/ -static void simgrid_ns3_add_host(simgrid::s4u::Host& host) +static void clusterCreation_cb(simgrid::kernel::routing::ClusterCreationArgs const& cluster) { - const char* id = host.name().c_str(); - XBT_DEBUG("NS3_ADD_HOST '%s'", id); + 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 + auto* host_dst = new NetPointNs3(); - ns3_node_t ns3host = xbt_new0(s_ns3_node_t,1); - ns3::Ptr node = ns3::CreateObject (0); - stack.Install(node); - nodes.Add(node); - ns3host->node_num = number_of_nodes ++; + // 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)->get_netpoint()->extension(); + xbt_assert(host_src, "Cannot find a ns-3 host of name %s", host_id.c_str()); - host.extension_set(NS3_EXTENSION_ID, ns3host); -} + // Any ns-3 route is symmetrical + ns3_add_link(host_src, host_dst, cluster.bw, cluster.lat); -static void simgrid_ns3_add_netcard(simgrid::surf::NetCard* netcard) -{ - const char* id = netcard->name(); - - ns3_node_t ns3netcard = xbt_new0(s_ns3_node_t,1); - XBT_DEBUG("Interface ns3 add netcard[%d] '%s'",number_of_nodes,id); - ns3::Ptr node = ns3::CreateObject (0); - stack.Install(node); - nodes.Add(node); - ns3netcard->node_num = number_of_nodes++; + delete host_dst; + } - xbt_lib_set(as_router_lib, id, NS3_ASR_LEVEL, ns3netcard ); + //Create link backbone + ns3_add_cluster(cluster.id.c_str(), cluster.bb_bw, cluster.bb_lat); } -#include "src/surf/xml/platf.hpp" // FIXME: move that back to the parsing area -static void parse_ns3_add_cluster(sg_platf_cluster_cbarg_t cluster) +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) { - const char *groups = NULL; - - int start, end, i; - unsigned int iter; - - xbt_dynar_t tab_elements_num = xbt_dynar_new(sizeof(int), NULL); - - char *router_id,*host_id; - - xbt_dynar_t radical_elements = xbt_str_split(cluster->radical, ","); - xbt_dynar_foreach(radical_elements, iter, groups) { - xbt_dynar_t radical_ends = xbt_str_split(groups, "-"); - - switch (xbt_dynar_length(radical_ends)) { - case 1: - start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *)); - xbt_dynar_push_as(tab_elements_num, int, start); - router_id = bprintf("ns3_%s%d%s", cluster->prefix, start, cluster->suffix); - simgrid::s4u::Host::by_name_or_create(router_id) - ->extension_set(NS3_EXTENSION_ID, ns3_add_host_cluster(router_id)); - XBT_DEBUG("NS3_ADD_ROUTER '%s'",router_id); - free(router_id); - break; - - case 2: - start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *)); - end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *)); - for (i = start; i <= end; i++){ - xbt_dynar_push_as(tab_elements_num, int, i); - router_id = bprintf("ns3_%s%d%s", cluster->prefix, i, cluster->suffix); - simgrid::s4u::Host::by_name_or_create(router_id) - ->extension_set(NS3_EXTENSION_ID, ns3_add_host_cluster(router_id)); - XBT_DEBUG("NS3_ADD_ROUTER '%s'",router_id); - free(router_id); - } - break; - - default: - XBT_DEBUG("Malformed radical"); - } - } - - //Create links - unsigned int cpt; - int elmts; - char * lat = bprintf("%fs", cluster->lat); - char * bw = bprintf("%fBps", cluster->bw); + if (link_list.size() == 1) { + auto* link = static_cast(link_list[0]); - xbt_dynar_foreach(tab_elements_num,cpt,elmts) { - host_id = bprintf("%s%d%s", cluster->prefix, elmts, cluster->suffix); - router_id = bprintf("ns3_%s%d%s", cluster->prefix, elmts, cluster->suffix); - XBT_DEBUG("Create link from '%s' to '%s'",host_id,router_id); + XBT_DEBUG("Route from '%s' to '%s' with link '%s' %s", src->get_cname(), dst->get_cname(), link->get_cname(), + (symmetrical ? "(symmetrical)" : "(not symmetrical)")); - ns3_node_t host_src = ns3_find_host(host_id); - ns3_node_t host_dst = ns3_find_host(router_id); + // 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()); - xbt_assert(host_src && host_dst, "\tns3_add_link from %d to %d",host_src->node_num,host_dst->node_num); + // create link ns3 + auto* host_src = src->extension(); + auto* host_dst = dst->extension(); - ns3_add_link(host_src->node_num, host_dst->node_num, bw,lat); + 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()); - free(router_id); - free(host_id); + ns3_add_link(host_src, host_dst, link->get_bandwidth(), link->get_latency()); + } 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; } - xbt_free(lat); - xbt_free(bw); - xbt_dynar_free(&tab_elements_num); - - - //Create link backbone - lat = bprintf("%fs", cluster->bb_lat); - bw = bprintf("%fBps", cluster->bb_bw); - ns3_add_cluster(bw,lat,cluster->id); - xbt_free(lat); - xbt_free(bw); } /* Create the ns3 topology based on routing strategy */ -static void create_ns3_topology(void) +static void postparse_cb() { - XBT_DEBUG("Starting topology generation"); - - xbt_dynar_shrink(IPV4addr,0); - - //get the onelinks from the parsed platform - xbt_dynar_t onelink_routes = routing_platf->getOneLinkRoutes(); - - std::unordered_set already_seen = std::unordered_set(); - - XBT_DEBUG("There is %ld one-link routes",onelink_routes->used); - simgrid::surf::Onelink *onelink; - unsigned int iter; - xbt_dynar_foreach(onelink_routes, iter, onelink) { - char *src = onelink->src_->name(); - char *dst = onelink->dst_->name(); - simgrid::surf::LinkNS3 *link = static_cast(onelink->link_); - - if (strcmp(src,dst) && (already_seen.find(link) == already_seen.end())) { - already_seen.insert(link); - XBT_DEBUG("Route from '%s' to '%s' with link '%s'", src, dst, link->getName()); - char * link_bdw = bprintf("%fBps", link->getBandwidth()); - char * link_lat = bprintf("%fs", link->getLatency()); - - // XBT_DEBUG("src (%s), dst (%s), src_id = %d, dst_id = %d",src,dst, src_id, dst_id); - XBT_DEBUG("\tLink (%s) bdw:%s lat:%s", link->getName(), link_bdw, link_lat); - - //create link ns3 - ns3_node_t host_src = ns3_find_host(src); - if (!host_src) - host_src = static_cast(xbt_lib_get_or_null(as_router_lib,src,NS3_ASR_LEVEL)); - ns3_node_t host_dst = ns3_find_host(dst); - if(!host_dst) - host_dst = static_cast(xbt_lib_get_or_null(as_router_lib,dst,NS3_ASR_LEVEL)); - - if (!host_src || !host_dst) - xbt_die("\tns3_add_link from %d to %d",host_src->node_num,host_dst->node_num); - - ns3_add_link(host_src->node_num, host_dst->node_num, link_bdw, link_lat); - - xbt_free(link_bdw); - xbt_free(link_lat); - } - } + IPV4addr.shrink_to_fit(); ns3::GlobalRouteManager::BuildGlobalRoutingDatabase(); ns3::GlobalRouteManager::InitializeRoutes(); @@ -211,58 +138,80 @@ static void create_ns3_topology(void) *********/ void surf_network_model_init_NS3() { - if (surf_network_model) - return; + xbt_assert(surf_network_model == nullptr, "Cannot set the network model twice"); - surf_network_model = new simgrid::surf::NetworkNS3Model(); - xbt_dynar_push(all_existing_models, &surf_network_model); + surf_network_model = new simgrid::kernel::resource::NetworkNS3Model(); } +static simgrid::config::Flag + ns3_tcp_model("ns3/TcpModel", "The ns-3 tcp model can be : NewReno or Reno or Tahoe", "default"); + namespace simgrid { -namespace surf { +namespace kernel { +namespace resource { + +NetworkNS3Model::NetworkNS3Model() : NetworkModel(Model::UpdateAlgo::FULL) +{ + 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); -NetworkNS3Model::NetworkNS3Model() : NetworkModel() { - ns3_initialize(xbt_cfg_get_string(_sg_cfg_set, "ns3/TcpModel")); + NetPointNs3::EXTENSION_ID = routing::NetPoint::extension_create(); - routing_model_create(NULL); - simgrid::s4u::Host::onCreation.connect(simgrid_ns3_add_host); - simgrid::surf::netcardCreatedCallbacks.connect(simgrid_ns3_add_netcard); - simgrid::surf::on_cluster.connect (&parse_ns3_add_cluster); - simgrid::surf::on_postparse.connect(&create_ns3_topology); //get_one_link_routes + ns3_initialize(ns3_tcp_model.get()); - NS3_EXTENSION_ID = simgrid::s4u::Host::extension_create(xbt_free_f); - NS3_ASR_LEVEL = xbt_lib_add_level(as_router_lib, xbt_free_f); + routing::NetPoint::on_creation.connect([](routing::NetPoint& pt) { + 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); + + s4u::Engine::on_platform_created.connect(&postparse_cb); + s4u::NetZone::on_route_creation.connect(&routeCreation_cb); } NetworkNS3Model::~NetworkNS3Model() { - xbt_dynar_free_container(&IPV4addr); - xbt_dict_free(&flowFromSock); + IPV4addr.clear(); } -Link* NetworkNS3Model::createLink(const char *name, double bandwidth, double latency, e_surf_link_sharing_policy_t policy, - xbt_dict_t properties){ - - return new LinkNS3(this, name, properties, bandwidth, latency); +LinkImpl* NetworkNS3Model::create_link(const std::string& name, const std::vector& bandwidths, double latency, + s4u::Link::SharingPolicy) +{ + xbt_assert(bandwidths.size() == 1, "ns-3 links must use only 1 bandwidth."); + return new LinkNS3(this, name, bandwidths[0], latency); } -Action *NetworkNS3Model::communicate(NetCard *src, NetCard *dst, double size, double rate) +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_occuring_event(double now) +double NetworkNS3Model::next_occurring_event(double now) { - XBT_DEBUG("ns3_next_occuring_event"); + 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 (!getRunningActionSet()->size() || now == 0.0) + + // 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; - else - do { - ns3_simulator(now); - time_to_next_flow_completion = ns3::Simulator::Now().GetSeconds() - surf_get_clock();//FIXME: use now instead ? - } while(double_equals(time_to_next_flow_completion, 0, sg_surf_precision)); + 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()); @@ -271,103 +220,142 @@ double NetworkNS3Model::next_occuring_event(double now) return time_to_next_flow_completion; } -void NetworkNS3Model::updateActionsState(double now, double delta) +void NetworkNS3Model::update_actions_state(double now, double delta) { - static xbt_dynar_t socket_to_destroy = xbt_dynar_new(sizeof(char*),NULL); - - /* If there are no running flows, advance the NS3 simulator and return */ - if (getRunningActionSet()->empty()) { - - while(double_positive(now - ns3::Simulator::Now().GetSeconds(), sg_surf_precision)) - ns3_simulator(now-ns3::Simulator::Now().GetSeconds()); + static std::vector socket_to_destroy; - return; - } - - xbt_dict_cursor_t cursor = NULL; - char *ns3Socket; - SgFlow *sgFlow; - xbt_dict_foreach(flowFromSock,cursor,ns3Socket,sgFlow){ + 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); - action->setRemains(action->getCost() - sgFlow->sentBytes_); + // 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->getState() == Action::State::running){ - double data_delta_sent = sgFlow->sentBytes_ - action->lastSent_; + 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 = new std::vector(); + std::vector route = std::vector(); - routing_platf->getRouteAndLatency (action->src_, action->dst_, route, NULL); - for (auto link : *route) - TRACE_surf_link_set_utilization (link->getName(), action->getCategory(), (data_delta_sent)/delta, now-delta, delta); - delete route; + action->src_->route_to(action->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); - action->lastSent_ = sgFlow->sentBytes_; + action->last_sent_ = sgFlow->sent_bytes_; } if(sgFlow->finished_){ - xbt_dynar_push(socket_to_destroy,&ns3Socket); - XBT_DEBUG("Destroy socket %p of action %p", ns3Socket, action); - action->finish(); - action->setState(Action::State::done); + 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); + } 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_); } } - while (!xbt_dynar_is_empty(socket_to_destroy)){ - xbt_dynar_pop(socket_to_destroy,&ns3Socket); - + 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(ns3, xbt_log_priority_debug)) { - SgFlow *flow = (SgFlow*)xbt_dict_get (flowFromSock, ns3Socket); - XBT_DEBUG ("Removing socket %p of action %p", ns3Socket, flow->action_); + XBT_DEBUG("Removing socket %p of action %p", ns3_socket.c_str(), flow->action_); } - xbt_dict_remove(flowFromSock, ns3Socket); + delete flow; + flow_from_sock.erase(ns3_socket); + sink_from_sock.erase(ns3_socket); } - return; } /************ * Resource * ************/ -LinkNS3::LinkNS3(NetworkNS3Model *model, const char *name, xbt_dict_t props, double bandwidth, double latency) - : Link(model, name, props) +LinkNS3::LinkNS3(NetworkNS3Model* model, const std::string& name, double bandwidth, double latency) + : LinkImpl(model, name, nullptr) { - m_bandwidth.peak = bandwidth; - m_latency.peak = latency; + bandwidth_.peak = bandwidth; + latency_.peak = latency; - Link::onCreation(this); + s4u::Link::on_creation(this->piface_); } -LinkNS3::~LinkNS3() -{ -} +LinkNS3::~LinkNS3() = default; -void LinkNS3::apply_event(tmgr_trace_iterator_t event, double value) +void LinkNS3::apply_event(profile::Event*, double) { THROW_UNIMPLEMENTED; } -void LinkNS3::setBandwidthTrace(tmgr_trace_t trace) { - xbt_die("The NS3 network model doesn't support bandwidth traces"); +void LinkNS3::set_bandwidth_profile(profile::Profile*) +{ + xbt_die("The ns-3 network model doesn't support bandwidth profiles"); } -void LinkNS3::setLatencyTrace(tmgr_trace_t trace) { - xbt_die("The NS3 network model doesn't support latency traces"); +void LinkNS3::set_latency_profile(profile::Profile*) +{ + xbt_die("The ns-3 network model doesn't support latency profiles"); } /********** * Action * **********/ -NetworkNS3Action::NetworkNS3Action(Model *model, double size, NetCard *src, NetCard *dst) -: NetworkAction(model, size, false) +NetworkNS3Action::NetworkNS3Action(Model* model, double totalBytes, s4u::Host* src, s4u::Host* dst) + : NetworkAction(model, totalBytes, false), src_(src), dst_(dst) { - XBT_DEBUG("Communicate from %s to %s", src->name(), dst->name()); + + // 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()); + } + } + + 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 + + unsigned int node1 = src->get_netpoint()->extension()->node_num; + unsigned int node2 = dst->get_netpoint()->extension()->node_num; + + ns3::Ptr src_node = src->get_netpoint()->extension()->ns3_node_; + ns3::Ptr dst_node = dst->get_netpoint()->extension()->ns3_node_; - src_ = src; - dst_ = dst; - ns3_create_flow(src->name(), dst->name(), surf_get_clock(), size, this); + xbt_assert(node2 < IPV4addr.size(), "Element %s is unknown to ns-3. Is it connected to any one-hop link?", + 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->get_netpoint()->get_cname()); - Link::onCommunicate(this, src, dst); + 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)); + ns3::ApplicationContainer apps = sink.Install(dst_node); + + ns3::Ptr sock = ns3::Socket::CreateSocket(src_node, ns3::TcpSocketFactory::GetTypeId()); + + 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; + 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); } void NetworkNS3Action::suspend() { @@ -378,140 +366,88 @@ void NetworkNS3Action::resume() { THROW_UNIMPLEMENTED; } - /* Test whether a flow is suspended */ -bool NetworkNS3Action::isSuspended() +std::list NetworkNS3Action::links() const { - return 0; + THROW_UNIMPLEMENTED; } - -int NetworkNS3Action::unref() +void NetworkNS3Action::update_remains_lazy(double /*now*/) { - refcount_--; - if (!refcount_) { - if (action_hook.is_linked()) - stateSet_->erase(stateSet_->iterator_to(*this)); - XBT_DEBUG ("Removing action %p", this); - delete this; - return 1; - } - return 0; + THROW_IMPOSSIBLE; } -} -} - - -void ns3_simulator(double maxSeconds){ - if (maxSeconds > 0.0) // If there is a maximum amount of time to run - ns3::Simulator::Stop(ns3::Seconds(maxSeconds)); - XBT_DEBUG("Start simulator for at most %fs",maxSeconds); - ns3::Simulator::Run (); -} +} // namespace resource +} // namespace kernel +} // namespace simgrid -void ns3_create_flow(const char* a,const char *b,double startTime,u_int32_t TotalBytes,simgrid::surf::NetworkNS3Action * action) +void ns3_simulator(double maxSeconds) { - int node1 = ns3_find_host(a)->node_num; - int node2 = ns3_find_host(b)->node_num; - - ns3::Ptr src_node = nodes.Get(node1); - ns3::Ptr dst_node = nodes.Get(node2); - - char* addr = (char*)xbt_dynar_get_as(IPV4addr,node2,char*); - - XBT_DEBUG("ns3_create_flow %d Bytes from %d to %d with Interface %s",TotalBytes, node1, node2,addr); - ns3::PacketSinkHelper sink("ns3::TcpSocketFactory", ns3::InetSocketAddress (ns3::Ipv4Address::GetAny(), port_number)); - sink.Install (dst_node); - - ns3::Ptr sock = ns3::Socket::CreateSocket (src_node, ns3::TcpSocketFactory::GetTypeId()); - - xbt_dict_set(flowFromSock, transformSocketPtr(sock), new SgFlow(TotalBytes, action), NULL); - - sock->Bind(ns3::InetSocketAddress(port_number)); - XBT_DEBUG("Create flow starting to %fs + %fs = %fs", - startTime-ns3::Simulator::Now().GetSeconds(), ns3::Simulator::Now().GetSeconds(), startTime); + 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); - ns3::Simulator::Schedule (ns3::Seconds(startTime-ns3::Simulator::Now().GetSeconds()), - &StartFlow, sock, addr, port_number); + 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()); - port_number++; - xbt_assert(port_number <= 65000, "Too many connections! Port number is saturated."); + if(maxSeconds > 0.0) + id.Cancel(); } -// initialize the NS3 interface and environment -void ns3_initialize(const char* TcpProtocol){ -// tcpModel are: -// "ns3::TcpNewReno" -// "ns3::TcpReno" -// "ns3::TcpTahoe" +// initialize the ns-3 interface and environment +void ns3_initialize(std::string TcpProtocol) +{ + // tcpModel are: + // "ns3::TcpNewReno" + // "ns3::TcpReno" + // "ns3::TcpTahoe" - ns3::Config::SetDefault ("ns3::TcpSocket::SegmentSize", ns3::UintegerValue (1024)); // 1024-byte packet for easier reading + 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)); - if (!strcmp(TcpProtocol,"default")) - return; + if (TcpProtocol == "default") { + /* nothing to do */ - if (!strcmp(TcpProtocol,"Reno")) { - XBT_INFO("Switching Tcp protocol to '%s'",TcpProtocol); + } else if (TcpProtocol == "Reno") { + XBT_INFO("Switching Tcp protocol to '%s'", TcpProtocol.c_str()); ns3::Config::SetDefault ("ns3::TcpL4Protocol::SocketType", ns3::StringValue("ns3::TcpReno")); - return; - } - if (!strcmp(TcpProtocol,"NewReno")) { - XBT_INFO("Switching Tcp protocol to '%s'",TcpProtocol); + + } else if (TcpProtocol == "NewReno") { + XBT_INFO("Switching Tcp protocol to '%s'", TcpProtocol.c_str()); ns3::Config::SetDefault ("ns3::TcpL4Protocol::SocketType", ns3::StringValue("ns3::TcpNewReno")); - return; - } - if(!strcmp(TcpProtocol,"Tahoe")){ - XBT_INFO("Switching Tcp protocol to '%s'",TcpProtocol); - ns3::Config::SetDefault ("ns3::TcpL4Protocol::SocketType", ns3::StringValue("ns3::TcpTahoe")); - return; - } - xbt_die("The ns3/TcpModel must be : NewReno or Reno or Tahoe"); -} + } else if (TcpProtocol == "Tahoe") { + XBT_INFO("Switching Tcp protocol to '%s'", TcpProtocol.c_str()); + ns3::Config::SetDefault ("ns3::TcpL4Protocol::SocketType", ns3::StringValue("ns3::TcpTahoe")); -void * ns3_add_host_cluster(const char * id) -{ - ns3_node_t host = xbt_new0(s_ns3_node_t,1); - XBT_DEBUG("Interface ns3 add host[%d] '%s'",number_of_nodes,id); - ns3::Ptr node = ns3::CreateObject (0); - stack.Install(node); - Cluster_nodes.Add(node); - nodes.Add(node); - host->node_num = number_of_nodes; - number_of_nodes++; - return host; + } else { + xbt_die("The ns3/TcpModel must be: NewReno or Reno or Tahoe"); + } } -void ns3_add_cluster(char * bw,char * lat,const char *id) -{ - - XBT_DEBUG("cluster_id: %s",id); - XBT_DEBUG("bw: %s lat: %s",bw,lat); - XBT_DEBUG("Number of %s nodes: %d",id,Cluster_nodes.GetN() - number_of_clusters_nodes); - +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++){ + for (unsigned int i = number_of_clusters_nodes; i < Cluster_nodes.GetN(); i++) { Nodes.Add(Cluster_nodes.Get(i)); - XBT_DEBUG("Add node %d to cluster",i); + XBT_DEBUG("Add node %u to cluster", i); } number_of_clusters_nodes = Cluster_nodes.GetN(); - XBT_DEBUG("Add router %d to cluster",nodes.GetN()-Nodes.GetN()-1); + 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 NS3 is limited to 65000 nodes"); + xbt_assert(Nodes.GetN() <= 65000, "Cluster with ns-3 is limited to 65000 nodes"); ns3::CsmaHelper csma; - csma.SetChannelAttribute ("DataRate", ns3::StringValue (bw)); - csma.SetChannelAttribute ("Delay", ns3::StringValue (lat)); - ns3::NetDeviceContainer devices = csma.Install (Nodes); + 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"); - char * adr = bprintf("%d.%d.0.0",number_of_networks,number_of_links); - XBT_DEBUG("Assign IP Addresses %s to CSMA.",adr); + 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 (adr, "255.255.0.0"); - free(adr); + ipv4.SetBase(addr.c_str(), "255.255.0.0"); interfaces.Add(ipv4.Assign (devices)); if(number_of_links == 255){ @@ -521,50 +457,47 @@ void ns3_add_cluster(char * bw,char * lat,const char *id) }else{ number_of_links++; } - XBT_DEBUG("Number of nodes in Cluster_nodes: %d",Cluster_nodes.GetN()); + XBT_DEBUG("Number of nodes in Cluster_nodes: %u", Cluster_nodes.GetN()); } -static char* transformIpv4Address (ns3::Ipv4Address from){ +static std::string transformIpv4Address(ns3::Ipv4Address from) +{ std::stringstream sstream; sstream << from ; - std::string s = sstream.str(); - return bprintf("%s",s.c_str()); + return sstream.str(); } -void ns3_add_link(int src, int dst, char *bw, char *lat) -{ - if(number_of_links == 1 ) { - LogComponentEnable("UdpEchoClientApplication", ns3::LOG_LEVEL_INFO); - LogComponentEnable("UdpEchoServerApplication", ns3::LOG_LEVEL_INFO); - } - +void ns3_add_link(NetPointNs3* src, NetPointNs3* dst, double bw, double lat) { ns3::PointToPointHelper pointToPoint; - ns3::NetDeviceContainer netA; ns3::Ipv4AddressHelper address; - ns3::Ptr a = nodes.Get(src); - ns3::Ptr b = nodes.Get(dst); + int srcNum = src->node_num; + int dstNum = dst->node_num; + + ns3::Ptr a = src->ns3_node_; + ns3::Ptr b = dst->ns3_node_; - XBT_DEBUG("\tAdd PTP from %d to %d bw:'%s' lat:'%s'",src,dst,bw,lat); - pointToPoint.SetDeviceAttribute ("DataRate", ns3::StringValue (bw)); - pointToPoint.SetChannelAttribute ("Delay", ns3::StringValue (lat)); + 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)); - char * adr = bprintf("%d.%d.0.0",number_of_networks,number_of_links); - address.SetBase (adr, "255.255.0.0"); - XBT_DEBUG("\tInterface stack '%s'",adr); - free(adr); + 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()); interfaces.Add(address.Assign (netA)); - char *tmp = transformIpv4Address(interfaces.GetAddress(interfaces.GetN()-2)); - xbt_dynar_set_as(IPV4addr,src,char*,tmp); - XBT_DEBUG("Have write '%s' for Node '%d'",(char*)xbt_dynar_get_as(IPV4addr,src,char*),src); + if (IPV4addr.size() <= (unsigned)srcNum) + IPV4addr.resize(srcNum + 1); + IPV4addr[srcNum] = transformIpv4Address(interfaces.GetAddress(interfaces.GetN() - 2)); - tmp = transformIpv4Address(interfaces.GetAddress(interfaces.GetN()-1)); - xbt_dynar_set_as(IPV4addr,dst,char*,tmp); - XBT_DEBUG("Have write '%s' for Node '%d'",(char*)xbt_dynar_get_as(IPV4addr,dst,char*),dst); + if (IPV4addr.size() <= (unsigned)dstNum) + IPV4addr.resize(dstNum + 1); + IPV4addr[dstNum] = transformIpv4Address(interfaces.GetAddress(interfaces.GetN() - 1)); if (number_of_links == 255){ xbt_assert(number_of_networks < 255, "Number of links and networks exceed 255*255");