-/* Copyright (c) 2007-2015. The SimGrid Team.
- * All rights reserved. */
+/* Copyright (c) 2007-2016. 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 <unordered_set>
+
+#include <xbt/config.hpp>
+
+#include "ns3/core-module.h"
+#include "ns3/node.h"
+
+#include "ns3/ns3_interface.h"
+#include "ns3/ns3_simulator.h"
+#include "network_ns3.hpp"
#include "src/surf/HostImpl.hpp"
#include "src/surf/surf_private.h"
#include "simgrid/s4u/As.hpp"
-XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(ns3);
-
-int NS3_EXTENSION_ID;
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(ns3, surf, "Logging specific to the SURF network NS3 module");
xbt_dynar_t IPV4addr = xbt_dynar_new(sizeof(char*),free);
-static double time_to_next_flow_completion = -1;
-extern xbt_dict_t dict_socket;
+/*****************
+ * Crude globals *
+ *****************/
-/*************
- * Callbacks *
- *************/
+extern xbt_dict_t flowFromSock;
-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 ns3::InternetStackHelper stack;
+static ns3::NodeContainer nodes;
+static ns3::NodeContainer Cluster_nodes;
+static ns3::Ipv4InterfaceContainer interfaces;
+
+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)
+HostNs3::HostNs3()
{
- 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);
+ ns3::Ptr<ns3::Node> node = ns3::CreateObject<ns3::Node>(0);
+ stack.Install(node);
+ nodes.Add(node);
+ node_num = number_of_nodes++;
}
-static void simgrid_ns3_add_router(simgrid::surf::NetCard* router)
+
+/*************
+ * Callbacks *
+ *************/
+
+static void ns3_add_host(simgrid::s4u::Host& host)
{
- 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)
- );
+ host.extension_set<HostNs3>(new HostNs3());
}
-static void parse_ns3_add_AS(simgrid::s4u::As* as)
+static void ns3_add_netcard(simgrid::kernel::routing::NetCard* netcard)
{
- 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) );
+ xbt_lib_set(as_router_lib, netcard->name(), NS3_ASR_LEVEL, new HostNs3());
}
#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");
- }
- }
+ char* lat = bprintf("%fs", cluster->lat);
+ char* bw = bprintf("%fBps", cluster->bw);
- //Create links
- unsigned int cpt;
- int elmts;
- char * lat = bprintf("%fs", cluster->lat);
- char * bw = bprintf("%fBps", cluster->bw);
+ for (int i : *cluster->radicals) {
+ char* router_id = bprintf("router_%s%d%s", cluster->prefix, i, cluster->suffix);
- 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);
+ simgrid::s4u::Host* router = simgrid::s4u::Host::by_name_or_create(router_id);
+ ns3_add_host(*router);
- ns3_nodes_t host_src = ns3_find_host(host_id);
- ns3_nodes_t host_dst = ns3_find_host(router_id);
+ // Create private link
+ char* host_id = bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
+ HostNs3* host_src = ns3_find_host(host_id);
+ HostNs3* host_dst = router->extension<HostNs3>();
- if(host_src && host_dst){}
- else xbt_die("\tns3_add_link from %d to %d",host_src->node_num,host_dst->node_num);
+ xbt_assert(host_src && host_dst, "\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,
- bw,lat);
+ ns3_add_link(host_src->node_num, host_dst->node_num, bw,lat);
free(router_id);
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);
}
//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;
+
+ std::unordered_set<simgrid::surf::LinkNS3*> already_seen = std::unordered_set<simgrid::surf::LinkNS3*>();
+
+ XBT_DEBUG("There is %ld one-link routes",onelink_routes->used);
+ simgrid::kernel::routing::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<simgrid::surf::LinkNS3 *>(onelink->link_);
+ simgrid::surf::LinkNS3 *link = static_cast<simgrid::surf::LinkNS3 *>(onelink->link_);
- if (strcmp(src,dst) && link->m_created){
+ 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());
- 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);
+ HostNs3* host_src = ns3_find_host(src);
if (!host_src)
- host_src = static_cast<ns3_nodes_t>(xbt_lib_get_or_null(as_router_lib,src,NS3_ASR_LEVEL));
- ns3_nodes_t host_dst = ns3_find_host(dst);
+ host_src = static_cast<HostNs3*>(xbt_lib_get_or_null(as_router_lib, src, NS3_ASR_LEVEL));
+ HostNs3* host_dst = ns3_find_host(dst);
if(!host_dst)
- host_dst = static_cast<ns3_nodes_t>(xbt_lib_get_or_null(as_router_lib,dst,NS3_ASR_LEVEL));
+ host_dst = static_cast<HostNs3*>(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);
+ ns3_add_link(host_src->node_num, host_dst->node_num, link_bdw, link_lat);
xbt_free(link_bdw);
xbt_free(link_lat);
}
}
-}
-
-static void parse_ns3_end_platform(void)
-{
- ns3_end_platform();
-}
-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<simgrid::surf::LinkNS3*>(elmts);
-}
-
-static void free_ns3_host(void * elmts)
-{
- ns3_nodes_t host = static_cast<ns3_nodes_t>(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<std::string> ns3_tcp_model("ns3/TcpModel",
+ "The ns3 tcp model can be : NewReno or Reno or Tahoe",
+ "default");
+
+simgrid::xbt::Extension<simgrid::s4u::Host, HostNs3> HostNs3::EXTENSION_ID;
+
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();
+ 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);
+ routing_model_create(nullptr);
+ simgrid::s4u::Host::onCreation.connect(ns3_add_host);
+ simgrid::kernel::routing::netcardCreatedCallbacks.connect(ns3_add_netcard);
+ simgrid::surf::on_cluster.connect (&parse_ns3_add_cluster);
+ simgrid::surf::on_postparse.connect(&create_ns3_topology);
+
+ HostNs3::EXTENSION_ID = simgrid::s4u::Host::extension_create<HostNs3>();
+
+ NS3_ASR_LEVEL = xbt_lib_add_level(as_router_lib, xbt_free_f);
+
+ 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);
+ 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){
- Link* link = new LinkNS3(this, name, properties, bandwidth, latency);
- Link::onCreation(link);
- return link;
+ return new LinkNS3(this, name, properties, 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
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);
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<NetworkNS3Action*>(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<Link*> *route = new std::vector<Link*>();
+ std::vector<Link*> route = std::vector<Link*>();
- routing_platf->getRouteAndLatency (action->p_srcElm, action->p_dstElm, route, NULL);
- for (auto link : *route)
+ routing_platf->getRouteAndLatency(action->src_->pimpl_netcard, action->dst_->pimpl_netcard, &route, nullptr);
+ for (auto link : route)
TRACE_surf_link_set_utilization (link->getName(), action->getCategory(), (data_delta_sent)/delta, now-delta, delta);
- delete route;
- 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);
+ xbt_dynar_pop(socket_to_destroy,&ns3Socket);
- void *data = xbt_dict_get (dict_socket, key);
- action = static_cast<NetworkNS3Action*>(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;
}
/************
LinkNS3::LinkNS3(NetworkNS3Model *model, const char *name, xbt_dict_t props, double bandwidth, double latency)
: Link(model, name, props)
- , m_created(1)
{
m_bandwidth.peak = bandwidth;
m_latency.peak = latency;
+
+ Link::onCreation(this);
}
LinkNS3::~LinkNS3()
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->name().c_str(), dst->name().c_str());
+
+ src_ = src;
+ dst_ = dst;
+ ns3_create_flow(src->name().c_str(), dst->name().c_str(), surf_get_clock(), size, this);
+
+ Link::onCommunicate(this, src, dst);
+}
+
+void NetworkNS3Action::suspend() {
THROW_UNIMPLEMENTED;
}
-void NetworkNS3Action::resume()
-{
+void NetworkNS3Action::resume() {
THROW_UNIMPLEMENTED;
}
/* 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 (!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;
}
}
+
+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 ();
+}
+
+void ns3_create_flow(const char* a,const char *b,double startTime,u_int32_t TotalBytes,simgrid::surf::NetworkNS3Action * action)
+{
+ int node1 = ns3_find_host(a)->node_num;
+ int node2 = ns3_find_host(b)->node_num;
+
+ ns3::Ptr<ns3::Node> src_node = nodes.Get(node1);
+ ns3::Ptr<ns3::Node> 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<ns3::Socket> 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 (!strcmp(TcpProtocol,"default"))
+ return;
+
+ if (!strcmp(TcpProtocol,"Reno")) {
+ XBT_INFO("Switching Tcp protocol to '%s'",TcpProtocol);
+ ns3::Config::SetDefault ("ns3::TcpL4Protocol::SocketType", ns3::StringValue("ns3::TcpReno"));
+ return;
+ }
+ if (!strcmp(TcpProtocol,"NewReno")) {
+ XBT_INFO("Switching Tcp protocol to '%s'",TcpProtocol);
+ 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");
+}
+
+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(int src, int dst, char *bw, char *lat)
+{
+ ns3::PointToPointHelper pointToPoint;
+
+ ns3::NetDeviceContainer netA;
+ ns3::Ipv4AddressHelper address;
+
+ ns3::Ptr<ns3::Node> a = nodes.Get(src);
+ ns3::Ptr<ns3::Node> b = nodes.Get(dst);
+
+ 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));
+
+ 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));
+
+ 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);
+
+ 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 (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++;
+ }
+}
