src/surf/network.c

   1 /*      $Id$     */
   2
   3 /* Copyright (c) 2004 Arnaud Legrand. All rights reserved.                  */
   4
   5 /* This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the license (GNU LGPL) which comes with this package. */
   7
   8 #include "network_private.h"
   9 #include "xbt/log.h"
  10
  11 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network, surf,
  12                                 "Logging specific to the SURF network module");
  13
  14 surf_network_model_t surf_network_model = NULL;
  15 static lmm_system_t network_maxmin_system = NULL;
  16 static void (*network_solve) (lmm_system_t) = NULL;
  17
  18 xbt_dict_t link_set = NULL;
  19 xbt_dict_t network_card_set = NULL;
  20
  21 int card_number = 0;
  22 int host_number = 0;
  23 link_CM02_t **routing_table = NULL;
  24 int *routing_table_size = NULL;
  25 static link_CM02_t loopback = NULL;
  26
  27 static void create_routing_table(void)
  28 {
  29   routing_table =
  30       xbt_new0(link_CM02_t *, /*card_number * card_number */ host_number * host_number);
  31   routing_table_size = xbt_new0(int, /*card_number * card_number*/ host_number * host_number);
  32 }
  33
  34 static void link_free(void *nw_link)
  35 {
  36   free(((link_CM02_t) nw_link)->name);
  37   free(nw_link);
  38 }
  39
  40 static link_CM02_t link_new(char *name,
  41                             double bw_initial,
  42                             tmgr_trace_t bw_trace,
  43                             double lat_initial,
  44                             tmgr_trace_t lat_trace,
  45                             e_surf_link_state_t
  46                             state_initial,
  47                             tmgr_trace_t state_trace,
  48                             e_surf_link_sharing_policy_t
  49                             policy, xbt_dict_t properties)
  50 {
  51   link_CM02_t nw_link = xbt_new0(s_link_CM02_t, 1);
  52   xbt_assert1(!xbt_dict_get_or_null(link_set, name),
  53               "Link '%s' declared several times in the platform file.", name);
  54
  55   nw_link->model = (surf_model_t) surf_network_model;
  56   nw_link->name = name;
  57   nw_link->bw_current = bw_initial;
  58   if (bw_trace)
  59     nw_link->bw_event =
  60         tmgr_history_add_trace(history, bw_trace, 0.0, 0, nw_link);
  61   nw_link->lat_current = lat_initial;
  62   if (lat_trace)
  63     nw_link->lat_event =
  64         tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
  65   nw_link->state_current = state_initial;
  66   if (state_trace)
  67     nw_link->state_event =
  68         tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
  69
  70   nw_link->constraint =
  71       lmm_constraint_new(network_maxmin_system, nw_link,
  72                          nw_link->bw_current);
  73
  74   if (policy == SURF_LINK_FATPIPE)
  75     lmm_constraint_shared(nw_link->constraint);
  76
  77   nw_link->properties = properties;
  78
  79   current_property_set = properties;
  80
  81   xbt_dict_set(link_set, name, nw_link, link_free);
  82
  83   return nw_link;
  84 }
  85
  86 static void network_card_free(void *nw_card)
  87 {
  88   free(((network_card_CM02_t) nw_card)->name);
  89   free(nw_card);
  90 }
  91
  92 static int network_card_new(const char *card_name)
  93 {
  94   network_card_CM02_t card =
  95       xbt_dict_get_or_null(network_card_set, card_name);
  96
  97   if (!card) {
  98     card = xbt_new0(s_network_card_CM02_t, 1);
  99     card->name = xbt_strdup(card_name);
 100     card->id = card_number++;
 101     xbt_dict_set(network_card_set, card_name, card, network_card_free);
 102   }
 103   return card->id;
 104 }
 105
 106 static void route_new(int src_id, int dst_id,
 107                       link_CM02_t * link_list, int nb_link)
 108 {
 109   ROUTE_SIZE(src_id, dst_id) = nb_link;
 110   ROUTE(src_id, dst_id) = link_list =
 111       xbt_realloc(link_list, sizeof(link_CM02_t) * nb_link);
 112 }
 113
 114 static void parse_link_init(void)
 115 {
 116   char *name_link;
 117   double bw_initial;
 118   tmgr_trace_t bw_trace;
 119   double lat_initial;
 120   tmgr_trace_t lat_trace;
 121   e_surf_link_state_t state_initial_link = SURF_LINK_ON;
 122   e_surf_link_sharing_policy_t policy_initial_link = SURF_LINK_SHARED;
 123   tmgr_trace_t state_trace;
 124
 125   name_link = xbt_strdup(A_surfxml_link_id);
 126   surf_parse_get_double(&bw_initial, A_surfxml_link_bandwidth);
 127   surf_parse_get_trace(&bw_trace, A_surfxml_link_bandwidth_file);
 128   surf_parse_get_double(&lat_initial, A_surfxml_link_latency);
 129   surf_parse_get_trace(&lat_trace, A_surfxml_link_latency_file);
 130
 131   xbt_assert0((A_surfxml_link_state ==
 132                A_surfxml_link_state_ON)
 133               || (A_surfxml_link_state ==
 134                   A_surfxml_link_state_OFF), "Invalid state");
 135   if (A_surfxml_link_state == A_surfxml_link_state_ON)
 136     state_initial_link = SURF_LINK_ON;
 137   else if (A_surfxml_link_state ==
 138            A_surfxml_link_state_OFF)
 139     state_initial_link = SURF_LINK_OFF;
 140
 141   if (A_surfxml_link_sharing_policy ==
 142       A_surfxml_link_sharing_policy_SHARED)
 143     policy_initial_link = SURF_LINK_SHARED;
 144   else if (A_surfxml_link_sharing_policy ==
 145            A_surfxml_link_sharing_policy_FATPIPE)
 146     policy_initial_link = SURF_LINK_FATPIPE;
 147
 148   surf_parse_get_trace(&state_trace, A_surfxml_link_state_file);
 149
 150   link_new(name_link, bw_initial, bw_trace,
 151                    lat_initial, lat_trace, state_initial_link, state_trace,
 152                    policy_initial_link, xbt_dict_new());
 153
 154 }
 155
 156 static int src_id = -1;
 157 static int dst_id = -1;
 158
 159 static void parse_route_set_endpoints(void)
 160 {
 161   src_id = network_card_new(A_surfxml_route_src);
 162   dst_id = network_card_new(A_surfxml_route_dst);
 163
 164   route_link_list = xbt_dynar_new(sizeof(char *), &free_string);
 165 }
 166
 167 static void parse_route_set_route(void)
 168 {
 169   char *name;
 170   if (src_id != -1 && dst_id != -1) {
 171     name = bprintf("%d##%d",src_id, dst_id);
 172     xbt_dict_set(route_table, name, route_link_list, NULL);
 173     free(name);
 174   }
 175 }
 176
 177 static void add_loopback()
 178 {
 179   int i;
 180   /* Adding loopback if needed */
 181   for (i = 0; i < host_number; i++)
 182     if (!ROUTE_SIZE(i, i)) {
 183       if (!loopback)
 184         loopback = link_new(xbt_strdup("__MSG_loopback__"),
 185                                     498000000, NULL, 0.000015, NULL,
 186                                     SURF_LINK_ON, NULL,
 187                                     SURF_LINK_FATPIPE,NULL);
 188       ROUTE_SIZE(i, i) = 1;
 189       ROUTE(i, i) = xbt_new0(link_CM02_t, 1);
 190       ROUTE(i, i)[0] = loopback;
 191     }
 192 }
 193
 194 static void add_route()
 195 {
 196   xbt_ex_t e;
 197   int nb_link = 0;
 198   unsigned int cpt = 0;
 199   int link_list_capacity = 0;
 200   link_CM02_t *link_list = NULL;
 201
 202   if (routing_table == NULL) create_routing_table();
 203
 204   link_list_capacity = xbt_dynar_length(links);
 205   link_list = xbt_new(link_CM02_t, link_list_capacity);
 206
 207   src_id = atoi(xbt_dynar_get_as(keys, 0, char*));
 208   dst_id = atoi(xbt_dynar_get_as(keys, 1, char*));
 209
 210   char* link = NULL;
 211   xbt_dynar_foreach (links, cpt, link) {
 212       TRY {
 213         link_list[nb_link++] = xbt_dict_get(link_set, link);
 214       }
 215       CATCH(e) {
 216         RETHROW1("Link %s not found (dict raised this exception: %s)", link);
 217       }
 218   }
 219   route_new(src_id, dst_id, link_list, nb_link);
 220
 221 }
 222
 223 static void count_hosts(void)
 224 {
 225    host_number++;
 226 }
 227
 228 static void define_callbacks(const char *file)
 229 {
 230   /* Figuring out the network links */
 231   surfxml_add_callback(STag_surfxml_host_cb_list, &count_hosts);
 232   surfxml_add_callback(STag_surfxml_link_cb_list, &parse_link_init);
 233   surfxml_add_callback(STag_surfxml_prop_cb_list, &parse_properties);
 234   surfxml_add_callback(STag_surfxml_route_cb_list, &parse_route_set_endpoints);
 235   surfxml_add_callback(ETag_surfxml_link_c_ctn_cb_list, &parse_route_elem);
 236   surfxml_add_callback(ETag_surfxml_route_cb_list, &parse_route_set_route);
 237   surfxml_add_callback(STag_surfxml_platform_cb_list, &init_route_table);
 238   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_route);
 239   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_loopback);
 240 }
 241
 242 static void *name_service(const char *name)
 243 {
 244   network_card_CM02_t card = xbt_dict_get_or_null(network_card_set, name);
 245   return card;
 246 }
 247
 248 static const char *get_resource_name(void *resource_id)
 249 {
 250   return ((network_card_CM02_t) resource_id)->name;
 251 }
 252
 253 static int resource_used(void *resource_id)
 254 {
 255   return lmm_constraint_used(network_maxmin_system,
 256                              ((link_CM02_t) resource_id)->
 257                              constraint);
 258 }
 259
 260 static int action_free(surf_action_t action)
 261 {
 262   action->using--;
 263   if (!action->using) {
 264     xbt_swag_remove(action, action->state_set);
 265     if (((surf_action_network_CM02_t) action)->variable)
 266       lmm_variable_free(network_maxmin_system,
 267                         ((surf_action_network_CM02_t) action)->variable);
 268     free(action);
 269     return 1;
 270   }
 271   return 0;
 272 }
 273
 274 static void action_use(surf_action_t action)
 275 {
 276   action->using++;
 277 }
 278
 279 static void action_cancel(surf_action_t action)
 280 {
 281   return;
 282 }
 283
 284 static void action_recycle(surf_action_t action)
 285 {
 286   return;
 287 }
 288
 289 static void action_change_state(surf_action_t action,
 290                                 e_surf_action_state_t state)
 291 {
 292 /*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
 293 /*     if(((surf_action_network_CM02_t)action)->variable) { */
 294 /*       lmm_variable_disable(network_maxmin_system, ((surf_action_network_CM02_t)action)->variable); */
 295 /*       ((surf_action_network_CM02_t)action)->variable = NULL; */
 296 /*     } */
 297
 298   surf_action_change_state(action, state);
 299   return;
 300 }
 301
 302 static double share_resources(double now)
 303 {
 304   s_surf_action_network_CM02_t s_action;
 305   surf_action_network_CM02_t action = NULL;
 306   xbt_swag_t running_actions =
 307       surf_network_model->common_public->states.running_action_set;
 308   double min;
 309
 310   min = generic_maxmin_share_resources(running_actions,
 311                                        xbt_swag_offset(s_action,
 312                                                        variable),
 313                                        network_maxmin_system,
 314                                        network_solve);
 315
 316   xbt_swag_foreach(action, running_actions) {
 317     if (action->latency > 0) {
 318       if (min < 0)
 319         min = action->latency;
 320       else if (action->latency < min)
 321         min = action->latency;
 322     }
 323   }
 324
 325   return min;
 326 }
 327
 328 static void update_actions_state(double now, double delta)
 329 {
 330   double deltap = 0.0;
 331   surf_action_network_CM02_t action = NULL;
 332   surf_action_network_CM02_t next_action = NULL;
 333   xbt_swag_t running_actions =
 334       surf_network_model->common_public->states.running_action_set;
 335   /*
 336      xbt_swag_t failed_actions =
 337      surf_network_model->common_public->states.failed_action_set;
 338    */
 339
 340   xbt_swag_foreach_safe(action, next_action, running_actions) {
 341     deltap = delta;
 342     if (action->latency > 0) {
 343       if (action->latency > deltap) {
 344         double_update(&(action->latency), deltap);
 345         deltap = 0.0;
 346       } else {
 347         double_update(&(deltap), action->latency);
 348         action->latency = 0.0;
 349       }
 350       if ((action->latency == 0.0) && !(action->suspended))
 351         lmm_update_variable_weight(network_maxmin_system, action->variable,
 352                                    action->lat_current);
 353     }
 354     double_update(&(action->generic_action.remains),
 355                   lmm_variable_getvalue(action->variable) * deltap);
 356     if (action->generic_action.max_duration != NO_MAX_DURATION)
 357       double_update(&(action->generic_action.max_duration), delta);
 358
 359     /*   if(action->generic_action.remains<.00001) action->generic_action.remains=0; */
 360
 361     if ((action->generic_action.remains <= 0) &&
 362         (lmm_get_variable_weight(action->variable) > 0)) {
 363       action->generic_action.finish = surf_get_clock();
 364       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 365     } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
 366                (action->generic_action.max_duration <= 0)) {
 367       action->generic_action.finish = surf_get_clock();
 368       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 369     } else {                    /* Need to check that none of the model has failed */
 370       lmm_constraint_t cnst = NULL;
 371       int i = 0;
 372       link_CM02_t nw_link = NULL;
 373
 374       while ((cnst =
 375               lmm_get_cnst_from_var(network_maxmin_system,
 376                                     action->variable, i++))) {
 377         nw_link = lmm_constraint_id(cnst);
 378         if (nw_link->state_current == SURF_LINK_OFF) {
 379           action->generic_action.finish = surf_get_clock();
 380           action_change_state((surf_action_t) action, SURF_ACTION_FAILED);
 381           break;
 382         }
 383       }
 384     }
 385   }
 386
 387   return;
 388 }
 389
 390 static void update_resource_state(void *id,
 391                                   tmgr_trace_event_t event_type,
 392                                   double value)
 393 {
 394   link_CM02_t nw_link = id;
 395   /*   printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
 396   /*     "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
 397   /*     value, event_type); */
 398
 399   if (event_type == nw_link->bw_event) {
 400     nw_link->bw_current = value;
 401     lmm_update_constraint_bound(network_maxmin_system, nw_link->constraint,
 402                                 nw_link->bw_current);
 403   } else if (event_type == nw_link->lat_event) {
 404     double delta = value - nw_link->lat_current;
 405     lmm_variable_t var = NULL;
 406     surf_action_network_CM02_t action = NULL;
 407
 408     nw_link->lat_current = value;
 409     while (lmm_get_var_from_cnst
 410            (network_maxmin_system, nw_link->constraint, &var)) {
 411       action = lmm_variable_id(var);
 412       action->lat_current += delta;
 413       if (action->rate < 0)
 414         lmm_update_variable_bound(network_maxmin_system, action->variable,
 415                                   SG_TCP_CTE_GAMMA / (2.0 *
 416                                                       action->
 417                                                       lat_current));
 418       else
 419         lmm_update_variable_bound(network_maxmin_system, action->variable,
 420                                   min(action->rate,
 421                                       SG_TCP_CTE_GAMMA / (2.0 *
 422                                                           action->
 423                                                           lat_current)));
 424       if (!(action->suspended))
 425         lmm_update_variable_weight(network_maxmin_system, action->variable,
 426                                    action->lat_current);
 427       lmm_update_variable_latency(network_maxmin_system, action->variable,
 428                                   delta);
 429     }
 430   } else if (event_type == nw_link->state_event) {
 431     if (value > 0)
 432       nw_link->state_current = SURF_LINK_ON;
 433     else
 434       nw_link->state_current = SURF_LINK_OFF;
 435   } else {
 436     CRITICAL0("Unknown event ! \n");
 437     xbt_abort();
 438   }
 439
 440   return;
 441 }
 442
 443 static surf_action_t communicate(void *src, void *dst, double size,
 444                                  double rate)
 445 {
 446   surf_action_network_CM02_t action = NULL;
 447   network_card_CM02_t card_src = src;
 448   network_card_CM02_t card_dst = dst;
 449   int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
 450   link_CM02_t *route = ROUTE(card_src->id, card_dst->id);
 451   int i;
 452
 453   XBT_IN4("(%s,%s,%g,%g)", card_src->name, card_dst->name, size, rate);
 454   xbt_assert2(route_size,
 455               "You're trying to send data from %s to %s but there is no connexion between these two cards.",
 456               card_src->name, card_dst->name);
 457
 458   action = xbt_new0(s_surf_action_network_CM02_t, 1);
 459
 460   action->generic_action.using = 1;
 461   action->generic_action.cost = size;
 462   action->generic_action.remains = size;
 463   action->generic_action.max_duration = NO_MAX_DURATION;
 464   action->generic_action.start = surf_get_clock();
 465   action->generic_action.finish = -1.0;
 466   action->generic_action.model_type =
 467       (surf_model_t) surf_network_model;
 468   action->suspended = 0;        /* Should be useless because of the
 469                                    calloc but it seems to help valgrind... */
 470   action->generic_action.state_set =
 471       surf_network_model->common_public->states.running_action_set;
 472
 473   xbt_swag_insert(action, action->generic_action.state_set);
 474   action->rate = rate;
 475
 476   action->latency = 0.0;
 477   for (i = 0; i < route_size; i++)
 478     action->latency += route[i]->lat_current;
 479   action->lat_current = action->latency;
 480
 481   if (action->latency > 0)
 482     action->variable =
 483         lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,
 484                          route_size);
 485   else
 486     action->variable =
 487         lmm_variable_new(network_maxmin_system, action, 1.0, -1.0,
 488                          route_size);
 489
 490   if (action->rate < 0) {
 491     if (action->lat_current > 0)
 492       lmm_update_variable_bound(network_maxmin_system, action->variable,
 493                                 SG_TCP_CTE_GAMMA / (2.0 *
 494                                                     action->lat_current));
 495     else
 496       lmm_update_variable_bound(network_maxmin_system, action->variable,
 497                                 -1.0);
 498   } else {
 499     if (action->lat_current > 0)
 500       lmm_update_variable_bound(network_maxmin_system, action->variable,
 501                                 min(action->rate,
 502                                     SG_TCP_CTE_GAMMA / (2.0 *
 503                                                         action->
 504                                                         lat_current)));
 505     else
 506       lmm_update_variable_bound(network_maxmin_system, action->variable,
 507                                 action->rate);
 508   }
 509   lmm_update_variable_latency(network_maxmin_system, action->variable,
 510                               action->latency);
 511
 512   for (i = 0; i < route_size; i++)
 513     lmm_expand(network_maxmin_system, route[i]->constraint,
 514                action->variable, 1.0);
 515   XBT_OUT;
 516
 517   return (surf_action_t) action;
 518 }
 519
 520 /* returns an array of link_CM02_t */
 521 static const void **get_route(void *src, void *dst)
 522 {
 523   network_card_CM02_t card_src = src;
 524   network_card_CM02_t card_dst = dst;
 525   return (const void **) ROUTE(card_src->id, card_dst->id);
 526 }
 527
 528 static int get_route_size(void *src, void *dst)
 529 {
 530   network_card_CM02_t card_src = src;
 531   network_card_CM02_t card_dst = dst;
 532   return ROUTE_SIZE(card_src->id, card_dst->id);
 533 }
 534
 535 static const char *get_link_name(const void *link)
 536 {
 537   return ((link_CM02_t) link)->name;
 538 }
 539
 540 static double get_link_bandwidth(const void *link)
 541 {
 542   return ((link_CM02_t) link)->bw_current;
 543 }
 544
 545 static double get_link_latency(const void *link)
 546 {
 547   return ((link_CM02_t) link)->lat_current;
 548 }
 549
 550 static xbt_dict_t get_properties(void *link)
 551 {
 552  return ((link_CM02_t) link)->properties;
 553 }
 554
 555 static void action_suspend(surf_action_t action)
 556 {
 557   ((surf_action_network_CM02_t) action)->suspended = 1;
 558   lmm_update_variable_weight(network_maxmin_system,
 559                              ((surf_action_network_CM02_t) action)->
 560                              variable, 0.0);
 561 }
 562
 563 static void action_resume(surf_action_t action)
 564 {
 565   if (((surf_action_network_CM02_t) action)->suspended) {
 566     lmm_update_variable_weight(network_maxmin_system,
 567                                ((surf_action_network_CM02_t) action)->
 568                                variable,
 569                                ((surf_action_network_CM02_t) action)->
 570                                lat_current);
 571     ((surf_action_network_CM02_t) action)->suspended = 0;
 572   }
 573 }
 574
 575 static int action_is_suspended(surf_action_t action)
 576 {
 577   return ((surf_action_network_CM02_t) action)->suspended;
 578 }
 579
 580 static void action_set_max_duration(surf_action_t action, double duration)
 581 {
 582   action->max_duration = duration;
 583 }
 584
 585 static void finalize(void)
 586 {
 587   int i, j;
 588
 589   xbt_dict_free(&network_card_set);
 590   xbt_dict_free(&link_set);
 591   xbt_swag_free(surf_network_model->common_public->states.
 592                 ready_action_set);
 593   xbt_swag_free(surf_network_model->common_public->states.
 594                 running_action_set);
 595   xbt_swag_free(surf_network_model->common_public->states.
 596                 failed_action_set);
 597   xbt_swag_free(surf_network_model->common_public->states.
 598                 done_action_set);
 599   free(surf_network_model->common_public);
 600   free(surf_network_model->common_private);
 601   free(surf_network_model->extension_public);
 602
 603   free(surf_network_model);
 604   surf_network_model = NULL;
 605
 606   loopback = NULL;
 607   for (i = 0; i < card_number; i++)
 608     for (j = 0; j < card_number; j++)
 609       free(ROUTE(i, j));
 610   free(routing_table);
 611   routing_table = NULL;
 612   free(routing_table_size);
 613   routing_table_size = NULL;
 614   card_number = 0;
 615 }
 616
 617 static void surf_network_model_init_internal(void)
 618 {
 619   s_surf_action_t action;
 620
 621   surf_network_model = xbt_new0(s_surf_network_model_t, 1);
 622
 623   surf_network_model->common_private =
 624       xbt_new0(s_surf_model_private_t, 1);
 625   surf_network_model->common_public =
 626       xbt_new0(s_surf_model_public_t, 1);
 627   surf_network_model->extension_public =
 628       xbt_new0(s_surf_network_model_extension_public_t, 1);
 629
 630   surf_network_model->common_public->states.ready_action_set =
 631       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 632   surf_network_model->common_public->states.running_action_set =
 633       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 634   surf_network_model->common_public->states.failed_action_set =
 635       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 636   surf_network_model->common_public->states.done_action_set =
 637       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 638
 639   surf_network_model->common_public->name_service = name_service;
 640   surf_network_model->common_public->get_resource_name =
 641       get_resource_name;
 642   surf_network_model->common_public->action_get_state =
 643       surf_action_get_state;
 644   surf_network_model->common_public->action_get_start_time =
 645       surf_action_get_start_time;
 646   surf_network_model->common_public->action_get_finish_time =
 647       surf_action_get_finish_time;
 648   surf_network_model->common_public->action_free = action_free;
 649   surf_network_model->common_public->action_use = action_use;
 650   surf_network_model->common_public->action_cancel = action_cancel;
 651   surf_network_model->common_public->action_recycle = action_recycle;
 652   surf_network_model->common_public->action_change_state =
 653       action_change_state;
 654   surf_network_model->common_public->action_set_data =
 655       surf_action_set_data;
 656   surf_network_model->common_public->name = "network";
 657
 658   surf_network_model->common_private->resource_used = resource_used;
 659   surf_network_model->common_private->share_resources = share_resources;
 660   surf_network_model->common_private->update_actions_state =
 661       update_actions_state;
 662   surf_network_model->common_private->update_resource_state =
 663       update_resource_state;
 664   surf_network_model->common_private->finalize = finalize;
 665
 666   surf_network_model->common_public->suspend = action_suspend;
 667   surf_network_model->common_public->resume = action_resume;
 668   surf_network_model->common_public->is_suspended = action_is_suspended;
 669   surf_cpu_model->common_public->set_max_duration =
 670       action_set_max_duration;
 671
 672   surf_network_model->extension_public->communicate = communicate;
 673   surf_network_model->extension_public->get_route = get_route;
 674   surf_network_model->extension_public->get_route_size = get_route_size;
 675   surf_network_model->extension_public->get_link_name = get_link_name;
 676   surf_network_model->extension_public->get_link_bandwidth =
 677       get_link_bandwidth;
 678   surf_network_model->extension_public->get_link_latency =
 679       get_link_latency;
 680
 681   surf_network_model->common_public->get_properties =  get_properties;
 682
 683   link_set = xbt_dict_new();
 684   network_card_set = xbt_dict_new();
 685
 686   if (!network_maxmin_system)
 687     network_maxmin_system = lmm_system_new();
 688 }
 689
 690 /***************************************************************************/
 691 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
 692 /***************************************************************************/
 693 /* @TechReport{      rr-lip2002-40, */
 694 /*   author        = {Henri Casanova and Loris Marchal}, */
 695 /*   institution   = {LIP}, */
 696 /*   title         = {A Network Model for Simulation of Grid Application}, */
 697 /*   number        = {2002-40}, */
 698 /*   month         = {oct}, */
 699 /*   year          = {2002} */
 700 /* } */
 701 void surf_network_model_init_CM02(const char *filename)
 702 {
 703
 704   if (surf_network_model)
 705     return;
 706   surf_network_model_init_internal();
 707   define_callbacks(filename);
 708   xbt_dynar_push(model_list, &surf_network_model);
 709   network_solve = lmm_solve;
 710
 711   update_model_description(surf_network_model_description,
 712                               surf_network_model_description_size,
 713                               "CM02",
 714                               (surf_model_t) surf_network_model);
 715 }
 716
 717 void surf_network_model_init_Reno(const char *filename)
 718 {
 719   if (surf_network_model)
 720     return;
 721   surf_network_model_init_internal();
 722   define_callbacks(filename);
 723
 724   xbt_dynar_push(model_list, &surf_network_model);
 725   lmm_set_default_protocol_function(func_reno_f, func_reno_fp,
 726                                     func_reno_fpi);
 727   network_solve = lagrange_solve;
 728
 729   update_model_description(surf_network_model_description,
 730                               surf_network_model_description_size,
 731                               "Reno",
 732                               (surf_model_t) surf_network_model);
 733 }
 734
 735 void surf_network_model_init_Vegas(const char *filename)
 736 {
 737   if (surf_network_model)
 738     return;
 739   surf_network_model_init_internal();
 740   define_callbacks(filename);
 741
 742   xbt_dynar_push(model_list, &surf_network_model);
 743   lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
 744                                     func_vegas_fpi);
 745   network_solve = lagrange_solve;
 746
 747   update_model_description(surf_network_model_description,
 748                               surf_network_model_description_size,
 749                               "Vegas",
 750                               (surf_model_t) surf_network_model);
 751 }
 752
 753 #ifdef HAVE_SDP
 754 void surf_network_model_init_SDP(const char *filename)
 755 {
 756   if (surf_network_model)
 757     return;
 758   surf_network_model_init_internal();
 759   define_callbacks(filename);
 760
 761   xbt_dynar_push(model_list, &surf_network_model);
 762   network_solve = sdp_solve;
 763
 764   update_model_description(surf_network_model_description,
 765                               surf_network_model_description_size,
 766                               "SDP",
 767                               (surf_model_t) surf_network_model);
 768 }
 769 #endif