X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/87ce37a26d39bad9a2533f6a54ea11f526ab4046..6a711115accd081395c1ff0ac91835a612e9d781:/src/surf/network_ns3.cpp diff --git a/src/surf/network_ns3.cpp b/src/surf/network_ns3.cpp index 59a28ea24b..d78948ce89 100644 --- a/src/surf/network_ns3.cpp +++ b/src/surf/network_ns3.cpp @@ -1,298 +1,212 @@ -/* Copyright (c) 2007-2015. The SimGrid Team. - * All rights reserved. */ +/* Copyright (c) 2007-2017. 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/network_ns3.hpp" +#include + +#include "xbt/config.hpp" + +#include "ns3/core-module.h" +#include "ns3/node.h" + +#include "ns3/ns3_simulator.h" +#include "network_ns3.hpp" -#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 "src/kernel/routing/NetPoint.hpp" -#include "simgrid/s4u/As.hpp" +#include "simgrid/s4u/Engine.hpp" +#include "simgrid/s4u/NetZone.hpp" -XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(ns3); +XBT_LOG_NEW_DEFAULT_SUBCATEGORY(ns3, surf, "Logging specific to the SURF network NS3 module"); -int NS3_EXTENSION_ID; +std::vector IPV4addr; -xbt_dynar_t IPV4addr = xbt_dynar_new(sizeof(char*),free); -static double time_to_next_flow_completion = -1; +/***************** + * Crude globals * + *****************/ -extern xbt_dict_t dict_socket; +extern xbt_dict_t flowFromSock; -/************* - * Callbacks * - *************/ +static ns3::InternetStackHelper stack; +static ns3::NodeContainer nodes; +static ns3::NodeContainer Cluster_nodes; +static ns3::Ipv4InterfaceContainer interfaces; -static void simgrid_ns3_add_host(simgrid::s4u::Host& host) -{ - const char* id = host.name().c_str(); - XBT_DEBUG("NS3_ADD_HOST '%s'", id); - host.extension_set(NS3_EXTENSION_ID, ns3_add_host(id)); -} +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 -static void parse_ns3_add_link(sg_platf_link_cbarg_t link) -{ - XBT_DEBUG("NS3_ADD_LINK '%s'",link->id); - - Link *l = surf_network_model->createLink(link->id, link->bandwidth, link->latency, link->policy, link->properties); - if (link->bandwidth_trace) - l->setBandwidthTrace(link->latency_trace); - if (link->latency_trace) - l->setLatencyTrace(link->latency_trace); - if (link->state_trace) - l->setStateTrace(link->state_trace); -} -static void simgrid_ns3_add_router(simgrid::surf::NetCard* router) -{ - const char* router_id = router->name(); - XBT_DEBUG("NS3_ADD_ROUTER '%s'",router_id); - xbt_lib_set(as_router_lib, - router_id, - NS3_ASR_LEVEL, - ns3_add_router(router_id) - ); -} +simgrid::xbt::Extension NetPointNs3::EXTENSION_ID; -static void parse_ns3_add_AS(simgrid::s4u::As* as) +NetPointNs3::NetPointNs3() { - const char* as_id = as->name(); - XBT_DEBUG("NS3_ADD_AS '%s'", as_id); - xbt_lib_set(as_router_lib, as_id, NS3_ASR_LEVEL, ns3_add_AS(as_id) ); + ns3::Ptr node = ns3::CreateObject(0); + stack.Install(node); + nodes.Add(node); + node_num = number_of_nodes++; } -#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) -{ - const char *groups = NULL; - - int start, end, i; - unsigned int iter; - - xbt_dynar_t radical_elements; - xbt_dynar_t radical_ends; - xbt_dynar_t tab_elements_num = xbt_dynar_new(sizeof(int), NULL); - - char *router_id,*host_id; - - radical_elements = xbt_str_split(cluster->radical, ","); - xbt_dynar_foreach(radical_elements, iter, groups) { - 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); +/************* + * Callbacks * + *************/ - 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); +static void clusterCreation_cb(sg_platf_cluster_cbarg_t cluster) +{ + char* lat = bprintf("%fs", cluster->lat); + char* bw = bprintf("%fBps", cluster->bw); - ns3_nodes_t host_src = ns3_find_host(host_id); - ns3_nodes_t host_dst = ns3_find_host(router_id); + for (int 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 + NetPointNs3* host_dst = new NetPointNs3(); - if(host_src && host_dst){} - else xbt_die("\tns3_add_link from %d to %d",host_src->node_num,host_dst->node_num); + // Create private link + char* host_id = bprintf("%s%d%s", cluster->prefix, i, cluster->suffix); + NetPointNs3* host_src = sg_host_by_name(host_id)->pimpl_netpoint->extension(); + xbt_assert(host_src, "Cannot find a NS3 host of name %s", host_id); - ns3_add_link(host_src->node_num,host_src->type, - host_dst->node_num,host_dst->type, - bw,lat); + ns3_add_link(host_src, host_dst, bw, lat); - free(router_id); + delete host_dst; free(host_id); } 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); + ns3_add_cluster(cluster->id, bw, lat); xbt_free(lat); xbt_free(bw); } -/* Create the ns3 topology based on routing strategy */ -static void create_ns3_topology(void) +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* link_list) { - 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(); - if (!onelink_routes) - xbt_die("There is no routes!"); - XBT_DEBUG("Have get_onelink_routes, found %ld routes",onelink_routes->used); - //save them in trace file - 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) && link->m_created){ - 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()); - link->m_created = 0; - - // 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_nodes_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_nodes_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_src->type,host_dst->node_num,host_dst->type,link_bdw,link_lat); - - xbt_free(link_bdw); - xbt_free(link_lat); - } + if (link_list->size() == 1) { + simgrid::surf::LinkNS3* link = static_cast(link_list->at(0)); + + XBT_DEBUG("Route from '%s' to '%s' with link '%s' %s", src->cname(), dst->cname(), link->cname(), + (symmetrical ? "(symmetrical)" : "(not symmetrical)")); + char* link_bdw = bprintf("%fBps", link->bandwidth()); + char* link_lat = bprintf("%fs", link->latency()); + + // 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->cname(), link_bdw, link_lat); + + // create link ns3 + NetPointNs3* host_src = src->extension(); + NetPointNs3* host_dst = dst->extension(); + + xbt_assert(host_src != nullptr, "Network element %s does not seem to be NS3-ready", src->cname()); + xbt_assert(host_dst != nullptr, "Network element %s does not seem to be NS3-ready", dst->cname()); + + ns3_add_link(host_src, host_dst, link_bdw, link_lat); + if (symmetrical) + ns3_add_link(host_dst, host_src, link_bdw, link_lat); + + xbt_free(link_bdw); + xbt_free(link_lat); + } 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 NS3.\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->cname(), dst->cname(), link_list->size()); + warned_about_long_routes = true; } } -static void parse_ns3_end_platform(void) +/* Create the ns3 topology based on routing strategy */ +static void postparse_cb() { - ns3_end_platform(); -} + IPV4addr.shrink_to_fit(); -static void define_callbacks_ns3(void) -{ - simgrid::s4u::Host::onCreation.connect(simgrid_ns3_add_host); - simgrid::surf::netcardCreatedCallbacks.connect(simgrid_ns3_add_router); - simgrid::surf::on_link.connect (parse_ns3_add_link); - simgrid::surf::on_cluster.connect (&parse_ns3_add_cluster); - simgrid::surf::asCreatedCallbacks.connect(parse_ns3_add_AS); - simgrid::surf::on_postparse.connect(&create_ns3_topology); //get_one_link_routes - simgrid::surf::on_postparse.connect(&parse_ns3_end_platform); //InitializeRoutes + ns3::GlobalRouteManager::BuildGlobalRoutingDatabase(); + ns3::GlobalRouteManager::InitializeRoutes(); } /********* * Model * *********/ -static void free_ns3_link(void * elmts) -{ - delete static_cast(elmts); -} - -static void free_ns3_host(void * elmts) -{ - ns3_nodes_t host = static_cast(elmts); - free(host); -} - void surf_network_model_init_NS3() { if (surf_network_model) return; surf_network_model = new simgrid::surf::NetworkNS3Model(); - - xbt_dynar_push(all_existing_models, &surf_network_model); + all_existing_models->push_back(surf_network_model); } +static simgrid::config::Flag ns3_tcp_model("ns3/TcpModel", + "The ns3 tcp model can be : NewReno or Reno or Tahoe", + "default"); + namespace simgrid { namespace surf { NetworkNS3Model::NetworkNS3Model() : NetworkModel() { - if (ns3_initialize(xbt_cfg_get_string(_sg_cfg_set, "ns3/TcpModel"))) { - xbt_die("Impossible to initialize NS3 interface"); - } - routing_model_create(NULL); - define_callbacks_ns3(); + NetPointNs3::EXTENSION_ID = simgrid::kernel::routing::NetPoint::extension_create(); + + ns3_initialize(ns3_tcp_model.get().c_str()); - NS3_EXTENSION_ID = simgrid::s4u::Host::extension_create(free_ns3_host); - NS3_ASR_LEVEL = xbt_lib_add_level(as_router_lib, free_ns3_host); + simgrid::kernel::routing::NetPoint::onCreation.connect([](simgrid::kernel::routing::NetPoint* pt) { + pt->extension_set(new NetPointNs3()); + XBT_VERB("SimGrid's %s is known as node %d within NS3", pt->cname(), pt->extension()->node_num); + }); + simgrid::surf::on_cluster.connect(&clusterCreation_cb); + simgrid::s4u::onPlatformCreated.connect(&postparse_cb); + simgrid::s4u::NetZone::onRouteCreation.connect(&routeCreation_cb); + + LogComponentEnable("UdpEchoClientApplication", ns3::LOG_LEVEL_INFO); + LogComponentEnable("UdpEchoServerApplication", ns3::LOG_LEVEL_INFO); } NetworkNS3Model::~NetworkNS3Model() { - ns3_finalize(); - xbt_dynar_free_container(&IPV4addr); - xbt_dict_free(&dict_socket); + for (auto addr : IPV4addr) + free(addr); + IPV4addr.clear(); + xbt_dict_free(&flowFromSock); } -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::createLink(const char* name, double bandwidth, double latency, + e_surf_link_sharing_policy_t policy) +{ + return new LinkNS3(this, name, bandwidth, 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_DEBUG("Communicate from %s to %s", src->name(), dst->name()); - NetworkNS3Action *action = new NetworkNS3Action(this, size, 0); - - ns3_create_flow(src->name(), dst->name(), surf_get_clock(), size, action); - - action->m_lastSent = 0; - action->p_srcElm = src; - action->p_dstElm = dst; - networkCommunicateCallbacks(action, src, dst, size, rate); - - return (surf_action_t) action; + return new NetworkNS3Action(this, size, src, dst); } -double NetworkNS3Model::next_occuring_event(double now) +double NetworkNS3Model::nextOccuringEvent(double now) { + double time_to_next_flow_completion; XBT_DEBUG("ns3_next_occuring_event"); //get the first relevant value from the running_actions list - if (!getRunningActionSet()->size() || now == 0.0) + if (not getRunningActionSet()->size() || now == 0.0) return -1.0; else do { ns3_simulator(now); - time_to_next_flow_completion = ns3_time() - surf_get_clock();//FIXME: use now instead ? + time_to_next_flow_completion = ns3::Simulator::Now().GetSeconds() - surf_get_clock(); } while(double_equals(time_to_next_flow_completion, 0, sg_surf_precision)); XBT_DEBUG("min : %f", now); - XBT_DEBUG("ns3 time : %f", ns3_time()); + 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); @@ -301,122 +215,128 @@ double NetworkNS3Model::next_occuring_event(double now) void NetworkNS3Model::updateActionsState(double now, double delta) { - xbt_dict_cursor_t cursor = NULL; - char *key; - void *data; + static xbt_dynar_t socket_to_destroy = xbt_dynar_new(sizeof(char*),nullptr); - static xbt_dynar_t socket_to_destroy = NULL; - if(!socket_to_destroy) 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()); - /* If there are no running flows, just return */ - if (!getRunningActionSet()->size()) { - while(double_positive(now-ns3_time(), sg_surf_precision)) { - ns3_simulator(now-ns3_time()); - } return; } - NetworkNS3Action *action; - xbt_dict_foreach(dict_socket,cursor,key,data){ - action = static_cast(ns3_get_socket_action(data)); - XBT_DEBUG("Processing socket %p (action %p)",data,action); - action->setRemains(action->getCost() - ns3_get_socket_sent(data)); + xbt_dict_cursor_t cursor = nullptr; + char *ns3Socket; + SgFlow *sgFlow; + xbt_dict_foreach(flowFromSock,cursor,ns3Socket,sgFlow){ + NetworkNS3Action * action = sgFlow->action_; + XBT_DEBUG("Processing socket %p (action %p)",sgFlow,action); + action->setRemains(action->getCost() - sgFlow->sentBytes_); if (TRACE_is_enabled() && - action->getState() == SURF_ACTION_RUNNING){ - double data_sent = ns3_get_socket_sent(data); - double data_delta_sent = data_sent - action->m_lastSent; + action->getState() == Action::State::running){ + double data_delta_sent = sgFlow->sentBytes_ - action->lastSent_; - std::vector *route = new std::vector(); + std::vector route = std::vector(); - routing_platf->getRouteAndLatency (action->p_srcElm, action->p_dstElm, 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_->routeTo(action->dst_, &route, nullptr); + for (auto link : route) + TRACE_surf_link_set_utilization(link->cname(), action->getCategory(), (data_delta_sent) / delta, now - delta, + delta); - action->m_lastSent = data_sent; + action->lastSent_ = sgFlow->sentBytes_; } - if(ns3_get_socket_is_finished(data) == 1){ - xbt_dynar_push(socket_to_destroy,&key); - XBT_DEBUG("Destroy socket %p of action %p", key, action); + if(sgFlow->finished_){ + xbt_dynar_push(socket_to_destroy,&ns3Socket); + XBT_DEBUG("Destroy socket %p of action %p", ns3Socket, action); action->finish(); - action->setState(SURF_ACTION_DONE); + action->setState(Action::State::done); } } - while (!xbt_dynar_is_empty(socket_to_destroy)){ - xbt_dynar_pop(socket_to_destroy,&key); + while (not xbt_dynar_is_empty(socket_to_destroy)) { + xbt_dynar_pop(socket_to_destroy,&ns3Socket); - void *data = xbt_dict_get (dict_socket, key); - action = static_cast(ns3_get_socket_action(data)); - XBT_DEBUG ("Removing socket %p of action %p", key, action); - xbt_dict_remove(dict_socket, key); + 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_dict_remove(flowFromSock, ns3Socket); } - return; } /************ * Resource * ************/ -LinkNS3::LinkNS3(NetworkNS3Model *model, const char *name, xbt_dict_t props, double bandwidth, double latency) - : Link(model, name, props) - , m_created(1) +LinkNS3::LinkNS3(NetworkNS3Model* model, const char* 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::onCreation(this->piface_); } -LinkNS3::~LinkNS3() -{ -} +LinkNS3::~LinkNS3() = default; -void LinkNS3::apply_event(tmgr_trace_iterator_t event, double value) +void LinkNS3::apply_event(tmgr_trace_event_t event, double value) { THROW_UNIMPLEMENTED; } void LinkNS3::setBandwidthTrace(tmgr_trace_t trace) { - xbt_die("The NS3 network model doesn't support latency state traces"); + xbt_die("The NS3 network model doesn't support bandwidth traces"); } void LinkNS3::setLatencyTrace(tmgr_trace_t trace) { - xbt_die("The NS3 network model doesn't support latency state traces"); + xbt_die("The NS3 network model doesn't support latency traces"); } /********** * Action * **********/ -NetworkNS3Action::NetworkNS3Action(Model *model, double cost, bool failed) -: NetworkAction(model, cost, failed) -{} - -void NetworkNS3Action::suspend() +NetworkNS3Action::NetworkNS3Action(Model* model, double size, s4u::Host* src, s4u::Host* dst) + : NetworkAction(model, size, false) { + XBT_DEBUG("Communicate from %s to %s", src->cname(), dst->cname()); + + src_ = src; + dst_ = dst; + ns3_create_flow(src, dst, surf_get_clock(), size, this); + + s4u::Link::onCommunicate(this, src, dst); +} + +void NetworkNS3Action::suspend() { THROW_UNIMPLEMENTED; } -void NetworkNS3Action::resume() +void NetworkNS3Action::resume() { + THROW_UNIMPLEMENTED; +} + +std::list NetworkNS3Action::links() { THROW_UNIMPLEMENTED; + return nullptr; } - /* Test whether a flow is suspended */ +/* Test whether a flow is suspended */ bool NetworkNS3Action::isSuspended() { - return 0; + return false; } int NetworkNS3Action::unref() { - m_refcount--; - if (!m_refcount) { - if (action_hook.is_linked()) - p_stateSet->erase(p_stateSet->iterator_to(*this)); + refcount_--; + if (not refcount_) { + if (action_hook.is_linked()) + stateSet_->erase(stateSet_->iterator_to(*this)); XBT_DEBUG ("Removing action %p", this); - delete this; + delete this; return 1; } return 0; @@ -424,3 +344,163 @@ int NetworkNS3Action::unref() } } + +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 (current time: %f)", maxSeconds, surf_get_clock()); + ns3::Simulator::Run (); +} + +void ns3_create_flow(simgrid::s4u::Host* src, simgrid::s4u::Host* dst, double startTime, u_int32_t TotalBytes, + simgrid::surf::NetworkNS3Action* action) +{ + unsigned int node1 = src->pimpl_netpoint->extension()->node_num; + unsigned int node2 = dst->pimpl_netpoint->extension()->node_num; + + ns3::Ptr src_node = nodes.Get(node1); + ns3::Ptr dst_node = nodes.Get(node2); + + xbt_assert(node2 < IPV4addr.size(), "Element %s is unknown to NS3. Is it connected to any one-hop link?", + dst->pimpl_netpoint->cname()); + char* addr = IPV4addr.at(node2); + xbt_assert(addr != nullptr, "Element %s is unknown to NS3. Is it connected to any one-hop link?", + dst->pimpl_netpoint->cname()); + + 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), nullptr); + + 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::Simulator::Schedule (ns3::Seconds(startTime-ns3::Simulator::Now().GetSeconds()), + &StartFlow, sock, addr, port_number); + + port_number++; + xbt_assert(port_number <= 65000, "Too many connections! Port number is saturated."); +} + +// initialize the NS3 interface and environment +void ns3_initialize(const char* 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::DelAckCount", ns3::UintegerValue (1)); + + if (not strcmp(TcpProtocol, "default")) + return; + + if (not strcmp(TcpProtocol, "Reno")) { + XBT_INFO("Switching Tcp protocol to '%s'",TcpProtocol); + ns3::Config::SetDefault ("ns3::TcpL4Protocol::SocketType", ns3::StringValue("ns3::TcpReno")); + return; + } + if (not strcmp(TcpProtocol, "NewReno")) { + XBT_INFO("Switching Tcp protocol to '%s'",TcpProtocol); + ns3::Config::SetDefault ("ns3::TcpL4Protocol::SocketType", ns3::StringValue("ns3::TcpNewReno")); + return; + } + if (not 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"); +} + +void ns3_add_cluster(const char* id, char* bw, char* lat) +{ + ns3::NodeContainer Nodes; + + 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); + } + number_of_clusters_nodes = Cluster_nodes.GetN(); + + XBT_DEBUG("Add router %d 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"); + ns3::CsmaHelper csma; + csma.SetChannelAttribute ("DataRate", ns3::StringValue (bw)); + csma.SetChannelAttribute ("Delay", ns3::StringValue (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); + ns3::Ipv4AddressHelper ipv4; + ipv4.SetBase (adr, "255.255.0.0"); + free(adr); + interfaces.Add(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++; + } + XBT_DEBUG("Number of nodes in Cluster_nodes: %d",Cluster_nodes.GetN()); +} + +static char* transformIpv4Address (ns3::Ipv4Address from){ + std::stringstream sstream; + sstream << from ; + std::string s = sstream.str(); + return bprintf("%s",s.c_str()); +} + +void ns3_add_link(NetPointNs3* src, NetPointNs3* dst, char* bw, char* lat) +{ + ns3::PointToPointHelper pointToPoint; + + ns3::NetDeviceContainer netA; + ns3::Ipv4AddressHelper address; + + int srcNum = src->node_num; + int dstNum = dst->node_num; + + ns3::Ptr a = nodes.Get(srcNum); + ns3::Ptr b = nodes.Get(dstNum); + + XBT_DEBUG("\tAdd PTP from %d to %d bw:'%s' lat:'%s'", srcNum, dstNum, bw, lat); + pointToPoint.SetDeviceAttribute ("DataRate", ns3::StringValue (bw)); + pointToPoint.SetChannelAttribute ("Delay", ns3::StringValue (lat)); + + 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); + interfaces.Add(address.Assign (netA)); + + if (IPV4addr.size() <= (unsigned)srcNum) + IPV4addr.resize(srcNum + 1, nullptr); + IPV4addr.at(srcNum) = transformIpv4Address(interfaces.GetAddress(interfaces.GetN() - 2)); + + if (IPV4addr.size() <= (unsigned)dstNum) + IPV4addr.resize(dstNum + 1, nullptr); + IPV4addr.at(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"); + number_of_links = 1; + number_of_networks++; + } else { + number_of_links++; + } +}