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"
8 #include "src/surf/surf_private.h"
9 #include "src/surf/host_interface.hpp"
10 #include "simgrid/sg_config.h"
11 #include "src/instr/instr_private.h" // TRACE_is_enabled(). FIXME: remove by subscribing tracing to the surf signals
13 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(ns3);
18 static double time_to_next_flow_completion = -1;
20 extern xbt_dict_t dict_socket;
26 static void simgrid_ns3_add_host(simgrid::s4u::Host& host)
28 const char* id = host.name().c_str();
29 XBT_DEBUG("NS3_ADD_HOST '%s'", id);
30 host.extension_set(NS3_EXTENSION_ID, ns3_add_host(id));
33 static void parse_ns3_add_link(sg_platf_link_cbarg_t link)
35 XBT_DEBUG("NS3_ADD_LINK '%s'",link->id);
38 IPV4addr = xbt_dynar_new(sizeof(char*),free);
40 surf_network_model->createLink(link->id,
41 link->bandwidth, link->bandwidth_trace,
42 link->latency, link->latency_trace,
43 link->state_trace, link->policy, link->properties);
46 static void simgrid_ns3_add_router(simgrid::surf::NetCard* router)
48 const char* router_id = router->name();
49 XBT_DEBUG("NS3_ADD_ROUTER '%s'",router_id);
50 xbt_lib_set(as_router_lib,
53 ns3_add_router(router_id)
57 static void parse_ns3_add_AS(simgrid::surf::As* as)
59 const char* as_id = as->name_;
60 XBT_DEBUG("NS3_ADD_AS '%s'", as_id);
61 xbt_lib_set(as_router_lib, as_id, NS3_ASR_LEVEL, ns3_add_AS(as_id) );
64 #include "src/surf/xml/platf.hpp" // FIXME: move that back to the parsing area
65 static void parse_ns3_add_cluster(sg_platf_cluster_cbarg_t cluster)
67 const char *groups = NULL;
72 xbt_dynar_t radical_elements;
73 xbt_dynar_t radical_ends;
74 xbt_dynar_t tab_elements_num = xbt_dynar_new(sizeof(int), NULL);
76 char *router_id,*host_id;
78 radical_elements = xbt_str_split(cluster->radical, ",");
79 xbt_dynar_foreach(radical_elements, iter, groups) {
80 radical_ends = xbt_str_split(groups, "-");
82 switch (xbt_dynar_length(radical_ends)) {
84 start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
85 xbt_dynar_push_as(tab_elements_num, int, start);
86 router_id = bprintf("ns3_%s%d%s", cluster->prefix, start, cluster->suffix);
87 simgrid::s4u::Host::by_name_or_create(router_id)
88 ->extension_set(NS3_EXTENSION_ID, ns3_add_host_cluster(router_id));
89 XBT_DEBUG("NS3_ADD_ROUTER '%s'",router_id);
94 start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
95 end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
96 for (i = start; i <= end; i++){
97 xbt_dynar_push_as(tab_elements_num, int, i);
98 router_id = bprintf("ns3_%s%d%s", cluster->prefix, i, cluster->suffix);
99 simgrid::s4u::Host::by_name_or_create(router_id)
100 ->extension_set(NS3_EXTENSION_ID, ns3_add_host_cluster(router_id));
101 XBT_DEBUG("NS3_ADD_ROUTER '%s'",router_id);
107 XBT_DEBUG("Malformed radical");
114 char * lat = bprintf("%fs", cluster->lat);
115 char * bw = bprintf("%fBps", cluster->bw);
117 xbt_dynar_foreach(tab_elements_num,cpt,elmts)
119 host_id = bprintf("%s%d%s", cluster->prefix, elmts, cluster->suffix);
120 router_id = bprintf("ns3_%s%d%s", cluster->prefix, elmts, cluster->suffix);
121 XBT_DEBUG("Create link from '%s' to '%s'",host_id,router_id);
123 ns3_nodes_t host_src = ns3_find_host(host_id);
124 ns3_nodes_t host_dst = ns3_find_host(router_id);
126 if(host_src && host_dst){}
127 else xbt_die("\tns3_add_link from %d to %d",host_src->node_num,host_dst->node_num);
129 ns3_add_link(host_src->node_num,host_src->type,
130 host_dst->node_num,host_dst->type,
138 xbt_dynar_free(&tab_elements_num);
141 //Create link backbone
142 lat = bprintf("%fs", cluster->bb_lat);
143 bw = bprintf("%fBps", cluster->bb_bw);
144 ns3_add_cluster(bw,lat,cluster->id);
149 /* Create the ns3 topology based on routing strategy */
150 static void create_ns3_topology(void)
152 XBT_DEBUG("Starting topology generation");
154 xbt_dynar_shrink(IPV4addr,0);
156 //get the onelinks from the parsed platform
157 xbt_dynar_t onelink_routes = routing_platf->getOneLinkRoutes();
159 xbt_die("There is no routes!");
160 XBT_DEBUG("Have get_onelink_routes, found %ld routes",onelink_routes->used);
161 //save them in trace file
162 simgrid::surf::Onelink *onelink;
164 xbt_dynar_foreach(onelink_routes, iter, onelink) {
165 char *src = onelink->src_->name();
166 char *dst = onelink->dst_->name();
167 simgrid::surf::NetworkNS3Link *link =
168 static_cast<simgrid::surf::NetworkNS3Link *>(onelink->link_);
170 if (strcmp(src,dst) && link->m_created){
171 XBT_DEBUG("Route from '%s' to '%s' with link '%s'", src, dst, link->getName());
172 char * link_bdw = bprintf("%fBps", link->getBandwidth());
173 char * link_lat = bprintf("%fs", link->getLatency());
176 // XBT_DEBUG("src (%s), dst (%s), src_id = %d, dst_id = %d",src,dst, src_id, dst_id);
177 XBT_DEBUG("\tLink (%s) bdw:%s lat:%s", link->getName(), link_bdw, link_lat);
180 ns3_nodes_t host_src = ns3_find_host(src);
182 host_src = static_cast<ns3_nodes_t>(xbt_lib_get_or_null(as_router_lib,src,NS3_ASR_LEVEL));
183 ns3_nodes_t host_dst = ns3_find_host(dst);
185 host_dst = static_cast<ns3_nodes_t>(xbt_lib_get_or_null(as_router_lib,dst,NS3_ASR_LEVEL));
187 if (!host_src || !host_dst)
188 xbt_die("\tns3_add_link from %d to %d",host_src->node_num,host_dst->node_num);
190 ns3_add_link(host_src->node_num,host_src->type,host_dst->node_num,host_dst->type,link_bdw,link_lat);
198 static void parse_ns3_end_platform(void)
203 static void define_callbacks_ns3(void)
205 simgrid::s4u::Host::onCreation.connect(simgrid_ns3_add_host);
206 simgrid::surf::netcardCreatedCallbacks.connect(simgrid_ns3_add_router);
207 simgrid::surf::on_link.connect (&parse_ns3_add_link);
208 simgrid::surf::on_cluster.connect (&parse_ns3_add_cluster);
209 simgrid::surf::asCreatedCallbacks.connect(parse_ns3_add_AS);
210 simgrid::surf::on_postparse.connect(&create_ns3_topology); //get_one_link_routes
211 simgrid::surf::on_postparse.connect(&parse_ns3_end_platform); //InitializeRoutes
217 static void free_ns3_link(void * elmts)
219 delete static_cast<simgrid::surf::NetworkNS3Link*>(elmts);
222 static void free_ns3_host(void * elmts)
224 ns3_nodes_t host = static_cast<ns3_nodes_t>(elmts);
228 void surf_network_model_init_NS3()
230 if (surf_network_model)
233 surf_network_model = new simgrid::surf::NetworkNS3Model();
235 xbt_dynar_push(all_existing_models, &surf_network_model);
241 NetworkNS3Model::NetworkNS3Model() : NetworkModel() {
242 if (ns3_initialize(xbt_cfg_get_string(_sg_cfg_set, "ns3/TcpModel"))) {
243 xbt_die("Impossible to initialize NS3 interface");
245 routing_model_create(NULL);
246 define_callbacks_ns3();
248 NS3_EXTENSION_ID = simgrid::s4u::Host::extension_create(free_ns3_host);
249 NS3_ASR_LEVEL = xbt_lib_add_level(as_router_lib, free_ns3_host);
252 NetworkNS3Model::~NetworkNS3Model() {
254 xbt_dynar_free_container(&IPV4addr);
255 xbt_dict_free(&dict_socket);
258 Link* NetworkNS3Model::createLink(const char *name,
259 double bw_initial, tmgr_trace_t bw_trace,
260 double lat_initial, tmgr_trace_t lat_trace,
261 tmgr_trace_t state_trace,
262 e_surf_link_sharing_policy_t policy,
263 xbt_dict_t properties){
265 XBT_INFO("The NS3 network model doesn't support bandwidth state traces");
267 XBT_INFO("The NS3 network model doesn't support latency state traces");
269 XBT_INFO("The NS3 network model doesn't support link state traces");
270 Link* link = new NetworkNS3Link(this, name, properties, bw_initial, lat_initial);
271 Link::onCreation(link);
275 xbt_dynar_t NetworkNS3Model::getRoute(NetCard *src, NetCard *dst)
277 xbt_dynar_t route = NULL;
278 routing_platf->getRouteAndLatency(src, dst, &route, NULL);
282 Action *NetworkNS3Model::communicate(NetCard *src, NetCard *dst,
283 double size, double rate)
285 XBT_DEBUG("Communicate from %s to %s", src->name(), dst->name());
286 NetworkNS3Action *action = new NetworkNS3Action(this, size, 0);
288 ns3_create_flow(src->name(), dst->name(), surf_get_clock(), size, action);
290 action->m_lastSent = 0;
291 action->p_srcElm = src;
292 action->p_dstElm = dst;
293 networkCommunicateCallbacks(action, src, dst, size, rate);
295 return (surf_action_t) action;
298 double NetworkNS3Model::next_occuring_event(double now)
300 XBT_DEBUG("ns3_next_occuring_event");
302 //get the first relevant value from the running_actions list
303 if (!getRunningActionSet()->size() || now == 0.0)
308 time_to_next_flow_completion = ns3_time() - surf_get_clock();//FIXME: use now instead ?
309 } while(double_equals(time_to_next_flow_completion, 0, sg_surf_precision));
311 XBT_DEBUG("min : %f", now);
312 XBT_DEBUG("ns3 time : %f", ns3_time());
313 XBT_DEBUG("surf time : %f", surf_get_clock());
314 XBT_DEBUG("Next completion %f :", time_to_next_flow_completion);
316 return time_to_next_flow_completion;
319 void NetworkNS3Model::updateActionsState(double now, double delta)
321 xbt_dict_cursor_t cursor = NULL;
325 static xbt_dynar_t socket_to_destroy = NULL;
326 if(!socket_to_destroy) socket_to_destroy = xbt_dynar_new(sizeof(char*),NULL);
328 /* If there are no running flows, just return */
329 if (!getRunningActionSet()->size()) {
330 while(double_positive(now-ns3_time(), sg_surf_precision)) {
331 ns3_simulator(now-ns3_time());
336 NetworkNS3Action *action;
337 xbt_dict_foreach(dict_socket,cursor,key,data){
338 action = static_cast<NetworkNS3Action*>(ns3_get_socket_action(data));
339 XBT_DEBUG("Processing socket %p (action %p)",data,action);
340 action->setRemains(action->getCost() - ns3_get_socket_sent(data));
342 if (TRACE_is_enabled() &&
343 action->getState() == SURF_ACTION_RUNNING){
344 double data_sent = ns3_get_socket_sent(data);
345 double data_delta_sent = data_sent - action->m_lastSent;
347 xbt_dynar_t route = NULL;
349 routing_platf->getRouteAndLatency (action->p_srcElm, action->p_dstElm, &route, NULL);
351 for (i = 0; i < xbt_dynar_length (route); i++){
352 NetworkNS3Link* link = ((NetworkNS3Link*)xbt_dynar_get_ptr(route, i));
353 TRACE_surf_link_set_utilization (link->getName(),
354 action->getCategory(),
355 (data_delta_sent)/delta,
359 action->m_lastSent = data_sent;
362 if(ns3_get_socket_is_finished(data) == 1){
363 xbt_dynar_push(socket_to_destroy,&key);
364 XBT_DEBUG("Destroy socket %p of action %p", key, action);
366 action->setState(SURF_ACTION_DONE);
370 while (!xbt_dynar_is_empty(socket_to_destroy)){
371 xbt_dynar_pop(socket_to_destroy,&key);
373 void *data = xbt_dict_get (dict_socket, key);
374 action = static_cast<NetworkNS3Action*>(ns3_get_socket_action(data));
375 XBT_DEBUG ("Removing socket %p of action %p", key, action);
376 xbt_dict_remove(dict_socket, key);
385 NetworkNS3Link::NetworkNS3Link(NetworkNS3Model *model, const char *name, xbt_dict_t props,
386 double bw_initial, double lat_initial)
387 : Link(model, name, props)
390 m_bandwidth.peak = bw_initial;
391 m_latency.peak = lat_initial;
394 NetworkNS3Link::~NetworkNS3Link()
398 void NetworkNS3Link::apply_event(tmgr_trace_iterator_t event, double value)
407 NetworkNS3Action::NetworkNS3Action(Model *model, double cost, bool failed)
408 : NetworkAction(model, cost, failed)
411 #ifdef HAVE_LATENCY_BOUND_TRACKING
412 int NetworkNS3Action::getLatencyLimited() {
413 return m_latencyLimited;
417 void NetworkNS3Action::suspend()
422 void NetworkNS3Action::resume()
427 /* Test whether a flow is suspended */
428 bool NetworkNS3Action::isSuspended()
433 int NetworkNS3Action::unref()
437 if (action_hook.is_linked())
438 p_stateSet->erase(p_stateSet->iterator_to(*this));
439 XBT_DEBUG ("Removing action %p", this);