1 /* Copyright (c) 2007-2015. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
7 #include "src/surf/network_ns3.hpp"
9 #include "src/surf/HostImpl.hpp"
10 #include "src/surf/surf_private.h"
11 #include "simgrid/sg_config.h"
12 #include "src/instr/instr_private.h" // TRACE_is_enabled(). FIXME: remove by subscribing tracing to the surf signals
14 #include "simgrid/s4u/As.hpp"
16 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(ns3);
21 static double time_to_next_flow_completion = -1;
23 extern xbt_dict_t dict_socket;
29 static void simgrid_ns3_add_host(simgrid::s4u::Host& host)
31 const char* id = host.name().c_str();
32 XBT_DEBUG("NS3_ADD_HOST '%s'", id);
33 host.extension_set(NS3_EXTENSION_ID, ns3_add_host(id));
36 static void parse_ns3_add_link(sg_platf_link_cbarg_t link)
38 XBT_DEBUG("NS3_ADD_LINK '%s'",link->id);
41 IPV4addr = xbt_dynar_new(sizeof(char*),free);
43 Link *l = surf_network_model->createLink(link->id, link->bandwidth, link->latency,
44 link->policy, link->properties);
45 if (link->bandwidth_trace)
46 l->setBandwidthTrace(link->latency_trace);
47 if (link->latency_trace)
48 l->setLatencyTrace(link->latency_trace);
49 if (link->state_trace)
50 l->setStateTrace(link->state_trace);
52 static void simgrid_ns3_add_router(simgrid::surf::NetCard* router)
54 const char* router_id = router->name();
55 XBT_DEBUG("NS3_ADD_ROUTER '%s'",router_id);
56 xbt_lib_set(as_router_lib,
59 ns3_add_router(router_id)
63 static void parse_ns3_add_AS(simgrid::s4u::As* as)
65 const char* as_id = as->name();
66 XBT_DEBUG("NS3_ADD_AS '%s'", as_id);
67 xbt_lib_set(as_router_lib, as_id, NS3_ASR_LEVEL, ns3_add_AS(as_id) );
70 #include "src/surf/xml/platf.hpp" // FIXME: move that back to the parsing area
71 static void parse_ns3_add_cluster(sg_platf_cluster_cbarg_t cluster)
73 const char *groups = NULL;
78 xbt_dynar_t radical_elements;
79 xbt_dynar_t radical_ends;
80 xbt_dynar_t tab_elements_num = xbt_dynar_new(sizeof(int), NULL);
82 char *router_id,*host_id;
84 radical_elements = xbt_str_split(cluster->radical, ",");
85 xbt_dynar_foreach(radical_elements, iter, groups) {
86 radical_ends = xbt_str_split(groups, "-");
88 switch (xbt_dynar_length(radical_ends)) {
90 start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
91 xbt_dynar_push_as(tab_elements_num, int, start);
92 router_id = bprintf("ns3_%s%d%s", cluster->prefix, start, cluster->suffix);
93 simgrid::s4u::Host::by_name_or_create(router_id)
94 ->extension_set(NS3_EXTENSION_ID, ns3_add_host_cluster(router_id));
95 XBT_DEBUG("NS3_ADD_ROUTER '%s'",router_id);
100 start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
101 end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
102 for (i = start; i <= end; i++){
103 xbt_dynar_push_as(tab_elements_num, int, i);
104 router_id = bprintf("ns3_%s%d%s", cluster->prefix, i, cluster->suffix);
105 simgrid::s4u::Host::by_name_or_create(router_id)
106 ->extension_set(NS3_EXTENSION_ID, ns3_add_host_cluster(router_id));
107 XBT_DEBUG("NS3_ADD_ROUTER '%s'",router_id);
113 XBT_DEBUG("Malformed radical");
120 char * lat = bprintf("%fs", cluster->lat);
121 char * bw = bprintf("%fBps", cluster->bw);
123 xbt_dynar_foreach(tab_elements_num,cpt,elmts)
125 host_id = bprintf("%s%d%s", cluster->prefix, elmts, cluster->suffix);
126 router_id = bprintf("ns3_%s%d%s", cluster->prefix, elmts, cluster->suffix);
127 XBT_DEBUG("Create link from '%s' to '%s'",host_id,router_id);
129 ns3_nodes_t host_src = ns3_find_host(host_id);
130 ns3_nodes_t host_dst = ns3_find_host(router_id);
132 if(host_src && host_dst){}
133 else xbt_die("\tns3_add_link from %d to %d",host_src->node_num,host_dst->node_num);
135 ns3_add_link(host_src->node_num,host_src->type,
136 host_dst->node_num,host_dst->type,
144 xbt_dynar_free(&tab_elements_num);
147 //Create link backbone
148 lat = bprintf("%fs", cluster->bb_lat);
149 bw = bprintf("%fBps", cluster->bb_bw);
150 ns3_add_cluster(bw,lat,cluster->id);
155 /* Create the ns3 topology based on routing strategy */
156 static void create_ns3_topology(void)
158 XBT_DEBUG("Starting topology generation");
160 xbt_dynar_shrink(IPV4addr,0);
162 //get the onelinks from the parsed platform
163 xbt_dynar_t onelink_routes = routing_platf->getOneLinkRoutes();
165 xbt_die("There is no routes!");
166 XBT_DEBUG("Have get_onelink_routes, found %ld routes",onelink_routes->used);
167 //save them in trace file
168 simgrid::surf::Onelink *onelink;
170 xbt_dynar_foreach(onelink_routes, iter, onelink) {
171 char *src = onelink->src_->name();
172 char *dst = onelink->dst_->name();
173 simgrid::surf::LinkNS3 *link =
174 static_cast<simgrid::surf::LinkNS3 *>(onelink->link_);
176 if (strcmp(src,dst) && link->m_created){
177 XBT_DEBUG("Route from '%s' to '%s' with link '%s'", src, dst, link->getName());
178 char * link_bdw = bprintf("%fBps", link->getBandwidth());
179 char * link_lat = bprintf("%fs", link->getLatency());
182 // XBT_DEBUG("src (%s), dst (%s), src_id = %d, dst_id = %d",src,dst, src_id, dst_id);
183 XBT_DEBUG("\tLink (%s) bdw:%s lat:%s", link->getName(), link_bdw, link_lat);
186 ns3_nodes_t host_src = ns3_find_host(src);
188 host_src = static_cast<ns3_nodes_t>(xbt_lib_get_or_null(as_router_lib,src,NS3_ASR_LEVEL));
189 ns3_nodes_t host_dst = ns3_find_host(dst);
191 host_dst = static_cast<ns3_nodes_t>(xbt_lib_get_or_null(as_router_lib,dst,NS3_ASR_LEVEL));
193 if (!host_src || !host_dst)
194 xbt_die("\tns3_add_link from %d to %d",host_src->node_num,host_dst->node_num);
196 ns3_add_link(host_src->node_num,host_src->type,host_dst->node_num,host_dst->type,link_bdw,link_lat);
204 static void parse_ns3_end_platform(void)
209 static void define_callbacks_ns3(void)
211 simgrid::s4u::Host::onCreation.connect(simgrid_ns3_add_host);
212 simgrid::surf::netcardCreatedCallbacks.connect(simgrid_ns3_add_router);
213 simgrid::surf::on_link.connect (&parse_ns3_add_link);
214 simgrid::surf::on_cluster.connect (&parse_ns3_add_cluster);
215 simgrid::surf::asCreatedCallbacks.connect(parse_ns3_add_AS);
216 simgrid::surf::on_postparse.connect(&create_ns3_topology); //get_one_link_routes
217 simgrid::surf::on_postparse.connect(&parse_ns3_end_platform); //InitializeRoutes
223 static void free_ns3_link(void * elmts)
225 delete static_cast<simgrid::surf::LinkNS3*>(elmts);
228 static void free_ns3_host(void * elmts)
230 ns3_nodes_t host = static_cast<ns3_nodes_t>(elmts);
234 void surf_network_model_init_NS3()
236 if (surf_network_model)
239 surf_network_model = new simgrid::surf::NetworkNS3Model();
241 xbt_dynar_push(all_existing_models, &surf_network_model);
247 NetworkNS3Model::NetworkNS3Model() : NetworkModel() {
248 if (ns3_initialize(xbt_cfg_get_string(_sg_cfg_set, "ns3/TcpModel"))) {
249 xbt_die("Impossible to initialize NS3 interface");
251 routing_model_create(NULL);
252 define_callbacks_ns3();
254 NS3_EXTENSION_ID = simgrid::s4u::Host::extension_create(free_ns3_host);
255 NS3_ASR_LEVEL = xbt_lib_add_level(as_router_lib, free_ns3_host);
258 NetworkNS3Model::~NetworkNS3Model() {
260 xbt_dynar_free_container(&IPV4addr);
261 xbt_dict_free(&dict_socket);
264 Link* NetworkNS3Model::createLink(const char *name, double bandwidth, double latency, e_surf_link_sharing_policy_t policy,
265 xbt_dict_t properties){
267 Link* link = new LinkNS3(this, name, properties, bandwidth, latency);
268 Link::onCreation(link);
272 Action *NetworkNS3Model::communicate(NetCard *src, NetCard *dst,
273 double size, double rate)
275 XBT_DEBUG("Communicate from %s to %s", src->name(), dst->name());
276 NetworkNS3Action *action = new NetworkNS3Action(this, size, 0);
278 ns3_create_flow(src->name(), dst->name(), surf_get_clock(), size, action);
280 action->m_lastSent = 0;
281 action->p_srcElm = src;
282 action->p_dstElm = dst;
283 networkCommunicateCallbacks(action, src, dst, size, rate);
285 return (surf_action_t) action;
288 double NetworkNS3Model::next_occuring_event(double now)
290 XBT_DEBUG("ns3_next_occuring_event");
292 //get the first relevant value from the running_actions list
293 if (!getRunningActionSet()->size() || now == 0.0)
298 time_to_next_flow_completion = ns3_time() - surf_get_clock();//FIXME: use now instead ?
299 } while(double_equals(time_to_next_flow_completion, 0, sg_surf_precision));
301 XBT_DEBUG("min : %f", now);
302 XBT_DEBUG("ns3 time : %f", ns3_time());
303 XBT_DEBUG("surf time : %f", surf_get_clock());
304 XBT_DEBUG("Next completion %f :", time_to_next_flow_completion);
306 return time_to_next_flow_completion;
309 void NetworkNS3Model::updateActionsState(double now, double delta)
311 xbt_dict_cursor_t cursor = NULL;
315 static xbt_dynar_t socket_to_destroy = NULL;
316 if(!socket_to_destroy) socket_to_destroy = xbt_dynar_new(sizeof(char*),NULL);
318 /* If there are no running flows, just return */
319 if (!getRunningActionSet()->size()) {
320 while(double_positive(now-ns3_time(), sg_surf_precision)) {
321 ns3_simulator(now-ns3_time());
326 NetworkNS3Action *action;
327 xbt_dict_foreach(dict_socket,cursor,key,data){
328 action = static_cast<NetworkNS3Action*>(ns3_get_socket_action(data));
329 XBT_DEBUG("Processing socket %p (action %p)",data,action);
330 action->setRemains(action->getCost() - ns3_get_socket_sent(data));
332 if (TRACE_is_enabled() &&
333 action->getState() == SURF_ACTION_RUNNING){
334 double data_sent = ns3_get_socket_sent(data);
335 double data_delta_sent = data_sent - action->m_lastSent;
337 std::vector<Link*> *route = new std::vector<Link*>();
339 routing_platf->getRouteAndLatency (action->p_srcElm, action->p_dstElm, route, NULL);
340 for (auto link : *route)
341 TRACE_surf_link_set_utilization (link->getName(), action->getCategory(), (data_delta_sent)/delta, now-delta, delta);
344 action->m_lastSent = data_sent;
347 if(ns3_get_socket_is_finished(data) == 1){
348 xbt_dynar_push(socket_to_destroy,&key);
349 XBT_DEBUG("Destroy socket %p of action %p", key, action);
351 action->setState(SURF_ACTION_DONE);
355 while (!xbt_dynar_is_empty(socket_to_destroy)){
356 xbt_dynar_pop(socket_to_destroy,&key);
358 void *data = xbt_dict_get (dict_socket, key);
359 action = static_cast<NetworkNS3Action*>(ns3_get_socket_action(data));
360 XBT_DEBUG ("Removing socket %p of action %p", key, action);
361 xbt_dict_remove(dict_socket, key);
370 LinkNS3::LinkNS3(NetworkNS3Model *model, const char *name, xbt_dict_t props, double bandwidth, double latency)
371 : Link(model, name, props)
374 m_bandwidth.peak = bandwidth;
375 m_latency.peak = latency;
382 void LinkNS3::apply_event(tmgr_trace_iterator_t event, double value)
386 void LinkNS3::setBandwidthTrace(tmgr_trace_t trace) {
387 xbt_die("The NS3 network model doesn't support latency state traces");
389 void LinkNS3::setLatencyTrace(tmgr_trace_t trace) {
390 xbt_die("The NS3 network model doesn't support latency state traces");
397 NetworkNS3Action::NetworkNS3Action(Model *model, double cost, bool failed)
398 : NetworkAction(model, cost, failed)
401 void NetworkNS3Action::suspend()
406 void NetworkNS3Action::resume()
411 /* Test whether a flow is suspended */
412 bool NetworkNS3Action::isSuspended()
417 int NetworkNS3Action::unref()
421 if (action_hook.is_linked())
422 p_stateSet->erase(p_stateSet->iterator_to(*this));
423 XBT_DEBUG ("Removing action %p", this);