src/surf/network_ns3.c

   1 /* Copyright (c) 2007, 2008, 2009, 2010, 2011. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   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. */
   6
   7 #include "surf_private.h"
   8 #include "surf/ns3/ns3_interface.h"
   9 #include "xbt/lib.h"
  10 #include "surf/network_ns3_private.h"
  11 #include "xbt/str.h"
  12
  13 extern xbt_lib_t host_lib;
  14 extern xbt_lib_t link_lib;
  15 extern xbt_lib_t as_router_lib;
  16
  17 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network_ns3, surf,
  18                                 "Logging specific to the SURF network NS3 module");
  19
  20 extern routing_global_t global_routing;
  21
  22 static void replace_str(char *str, const char *orig, const char *rep)
  23 {
  24   char buffer[30];
  25   char *p;
  26
  27   if(!(p = strstr(str, orig)))  // Is 'orig' even in 'str'?
  28     return;
  29
  30   strncpy(buffer, str, p-str); // Copy characters from 'str' start to 'orig' st$
  31   buffer[p-str] = '\0';
  32
  33   sprintf(buffer+(p-str), "%s%s", rep, p+strlen(orig));
  34   xbt_free(str);
  35   str = xbt_strdup(buffer);
  36 }
  37
  38 static void replace_bdw_ns3(char * bdw)
  39 {
  40         char *temp = xbt_strdup(bdw);
  41         xbt_free(bdw);
  42         bdw = bprintf("%fbps",atof(temp));
  43         xbt_free(temp);
  44
  45 }
  46
  47 static void replace_lat_ns3(char * lat)
  48 {
  49         char *temp = xbt_strdup(lat);
  50         xbt_free(lat);
  51         lat = bprintf("%fs",atof(temp));
  52         xbt_free(temp);
  53 }
  54
  55 void parse_ns3_add_host(void)
  56 {
  57         XBT_DEBUG("NS3_ADD_HOST '%s'",A_surfxml_host_id);
  58         xbt_lib_set(host_lib,
  59                                 A_surfxml_host_id,
  60                                 NS3_HOST_LEVEL,
  61                                 ns3_add_host(A_surfxml_host_id)
  62                                 );
  63 }
  64 void parse_ns3_add_link(void)
  65 {
  66         XBT_DEBUG("NS3_ADD_LINK '%s'",A_surfxml_link_id);
  67
  68         tmgr_trace_t bw_trace;
  69         tmgr_trace_t state_trace;
  70         tmgr_trace_t lat_trace;
  71
  72         bw_trace = tmgr_trace_new(A_surfxml_link_bandwidth_file);
  73         lat_trace = tmgr_trace_new(A_surfxml_link_latency_file);
  74         state_trace = tmgr_trace_new(A_surfxml_link_state_file);
  75
  76         if (bw_trace)
  77                 XBT_INFO("The NS3 network model doesn't support bandwidth state traces");
  78         if (lat_trace)
  79                 XBT_INFO("The NS3 network model doesn't support latency state traces");
  80         if (state_trace)
  81                 XBT_INFO("The NS3 network model doesn't support link state traces");
  82
  83         ns3_link_t link_ns3 = xbt_new0(s_ns3_link_t,1);;
  84         link_ns3->id = xbt_strdup(A_surfxml_link_id);
  85         link_ns3->bdw = xbt_strdup(A_surfxml_link_bandwidth);
  86         link_ns3->lat = xbt_strdup(A_surfxml_link_latency);
  87
  88         surf_ns3_link_t link = xbt_new0(s_surf_ns3_link_t,1);
  89         link->generic_resource.name = xbt_strdup(A_surfxml_link_id);
  90         link->generic_resource.properties = current_property_set;
  91         link->data = link_ns3;
  92         link->created = 1;
  93
  94         xbt_lib_set(link_lib,A_surfxml_link_id,NS3_LINK_LEVEL,link_ns3);
  95         xbt_lib_set(link_lib,A_surfxml_link_id,SURF_LINK_LEVEL,link);
  96 }
  97 void parse_ns3_add_router(void)
  98 {
  99         XBT_DEBUG("NS3_ADD_ROUTER '%s'",A_surfxml_router_id);
 100         xbt_lib_set(as_router_lib,
 101                                 A_surfxml_router_id,
 102                                 NS3_ASR_LEVEL,
 103                                 ns3_add_router(A_surfxml_router_id)
 104                                 );
 105 }
 106 void parse_ns3_add_AS(void)
 107 {
 108         XBT_DEBUG("NS3_ADD_AS '%s'",A_surfxml_AS_id);
 109         xbt_lib_set(as_router_lib,
 110                                 A_surfxml_AS_id,
 111                                 NS3_ASR_LEVEL,
 112                                 ns3_add_AS(A_surfxml_AS_id)
 113                                 );
 114 }
 115 void parse_ns3_add_cluster(void)
 116 {
 117         char *cluster_prefix = A_surfxml_cluster_prefix;
 118         char *cluster_suffix = A_surfxml_cluster_suffix;
 119         char *cluster_radical = A_surfxml_cluster_radical;
 120         char *cluster_bb_bw = A_surfxml_cluster_bb_bw;
 121         char *cluster_bb_lat = A_surfxml_cluster_bb_lat;
 122         char *cluster_bw = A_surfxml_cluster_bw;
 123         char *cluster_lat = A_surfxml_cluster_lat;
 124         char *groups = NULL;
 125
 126         int start, end, i;
 127         unsigned int iter;
 128
 129         xbt_dynar_t radical_elements;
 130         xbt_dynar_t radical_ends;
 131         xbt_dynar_t tab_elements_num = xbt_dynar_new(sizeof(int), NULL);
 132
 133         char *router_id,*host_id;
 134
 135         radical_elements = xbt_str_split(cluster_radical, ",");
 136         xbt_dynar_foreach(radical_elements, iter, groups) {
 137                 radical_ends = xbt_str_split(groups, "-");
 138
 139                 switch (xbt_dynar_length(radical_ends)) {
 140                 case 1:
 141                   surf_parse_get_int(&start,xbt_dynar_get_as(radical_ends, 0, char *));
 142                   xbt_dynar_push_as(tab_elements_num, int, start);
 143                   router_id = bprintf("ns3_%s%d%s", cluster_prefix, start, cluster_suffix);
 144                   xbt_lib_set(host_lib,
 145                                                 router_id,
 146                                                 NS3_HOST_LEVEL,
 147                                                 ns3_add_host_cluster(router_id)
 148                                                 );
 149                   XBT_DEBUG("NS3_ADD_ROUTER '%s'",router_id);
 150                   free(router_id);
 151                   break;
 152
 153                 case 2:
 154                   surf_parse_get_int(&start,xbt_dynar_get_as(radical_ends, 0, char *));
 155                   surf_parse_get_int(&end, xbt_dynar_get_as(radical_ends, 1, char *));
 156                   for (i = start; i <= end; i++){
 157                         xbt_dynar_push_as(tab_elements_num, int, i);
 158                         router_id = bprintf("ns3_%s%d%s", cluster_prefix, i, cluster_suffix);
 159                         xbt_lib_set(host_lib,
 160                                                 router_id,
 161                                                 NS3_HOST_LEVEL,
 162                                                 ns3_add_host_cluster(router_id)
 163                                                 );
 164                         XBT_DEBUG("NS3_ADD_ROUTER '%s'",router_id);
 165                         free(router_id);
 166                   }
 167                   break;
 168
 169                 default:
 170                   XBT_DEBUG("Malformed radical");
 171                 }
 172         }
 173
 174
 175
 176         //Create links
 177         unsigned int cpt;
 178         int elmts;
 179         char * lat = xbt_strdup(cluster_lat);
 180         char * bw =  xbt_strdup(cluster_bw);
 181         replace_lat_ns3(lat);
 182         replace_bdw_ns3(bw);
 183
 184         xbt_dynar_foreach(tab_elements_num,cpt,elmts)
 185         {
 186                 host_id   = bprintf("%s%d%s", cluster_prefix, elmts, cluster_suffix);
 187                 router_id = bprintf("ns3_%s%d%s", cluster_prefix, elmts, cluster_suffix);
 188                 XBT_DEBUG("Create link from '%s' to '%s'",host_id,router_id);
 189
 190                 ns3_nodes_t host_src = xbt_lib_get_or_null(host_lib,host_id,  NS3_HOST_LEVEL);
 191                 ns3_nodes_t host_dst = xbt_lib_get_or_null(host_lib,router_id,NS3_HOST_LEVEL);
 192
 193                 if(host_src && host_dst){}
 194                 else xbt_die("\tns3_add_link from %d to %d",host_src->node_num,host_dst->node_num);
 195
 196                 ns3_add_link(host_src->node_num,host_dst->node_num,bw,lat);
 197
 198                 free(router_id);
 199                 free(host_id);
 200         }
 201         xbt_dynar_free(&tab_elements_num);
 202
 203
 204         //Create link backbone
 205         lat = xbt_strdup(cluster_bb_lat);
 206         bw =  xbt_strdup(cluster_bb_bw);
 207         replace_lat_ns3(lat);
 208         replace_bdw_ns3(bw);
 209         ns3_add_cluster(bw,lat,A_surfxml_cluster_id);
 210         xbt_free(lat);
 211         xbt_free(bw);
 212 }
 213
 214 double ns3_get_link_latency (const void *link)
 215 {
 216         double lat;
 217         //XBT_DEBUG("link_id:%s link_lat:%s link_bdw:%s",((surf_ns3_link_t)link)->data->id,((surf_ns3_link_t)link)->data->lat,((surf_ns3_link_t)link)->data->bdw);
 218         sscanf(((surf_ns3_link_t)link)->data->lat,"%lg",&lat);
 219         return lat;
 220 }
 221 double ns3_get_link_bandwidth (const void *link)
 222 {
 223         double bdw;
 224         //XBT_DEBUG("link_id:%s link_lat:%s link_bdw:%s",((surf_ns3_link_t)link)->data->id,((surf_ns3_link_t)link)->data->lat,((surf_ns3_link_t)link)->data->bdw);
 225         sscanf(((surf_ns3_link_t)link)->data->bdw,"%lg",&bdw);
 226         return bdw;
 227 }
 228
 229 static xbt_dynar_t ns3_get_route(const char *src, const char *dst)
 230 {
 231   return global_routing->get_route(src, dst);
 232 }
 233
 234 void parse_ns3_end_platform(void)
 235 {
 236         ns3_end_platform();
 237
 238           xbt_lib_cursor_t cursor = NULL;
 239           char *name = NULL;
 240           void **data = NULL;
 241           XBT_DEBUG("link_lib");
 242           xbt_lib_foreach(link_lib, cursor, name, data) {
 243                         XBT_DEBUG("\tSee link '%s'\t--> NS3_LEVEL %p",
 244                                         name,
 245                                         data[NS3_LINK_LEVEL]);
 246           }
 247           XBT_DEBUG(" ");
 248           XBT_DEBUG("host_lib");
 249           xbt_lib_foreach(host_lib, cursor, name, data) {
 250                         XBT_DEBUG("\tSee host '%s'\t--> NS3_LEVEL %p",
 251                                         name,
 252                                         data[NS3_HOST_LEVEL]);
 253           }
 254           XBT_DEBUG(" ");
 255           XBT_DEBUG("as_router_lib");
 256           xbt_lib_foreach(as_router_lib, cursor, name, data) {
 257                         XBT_DEBUG("\tSee ASR '%s'\t--> NS3_LEVEL %p",
 258                                         name,
 259                                         data[NS3_ASR_LEVEL]);
 260           }
 261
 262           XBT_DEBUG(" ");
 263 }
 264
 265 /* Create the ns3 topology based on routing strategy */
 266 void create_ns3_topology()
 267 {
 268    XBT_INFO("Starting topology generation");
 269
 270    //get the onelinks from the parsed platform
 271    xbt_dynar_t onelink_routes = global_routing->get_onelink_routes();
 272    if (!onelink_routes)
 273      xbt_die("There is no routes!");
 274    XBT_INFO("Have get_onelink_routes, found %ld routes",onelink_routes->used);
 275    //save them in trace file
 276    onelink_t onelink;
 277    unsigned int iter;
 278    xbt_dynar_foreach(onelink_routes, iter, onelink) {
 279      char *src = onelink->src;
 280      char *dst = onelink->dst;
 281      void *link = onelink->link_ptr;
 282
 283      if( strcmp(src,dst) && ((surf_ns3_link_t)link)->created){
 284      XBT_INFO("Route from '%s' to '%s' with link '%s'",src,dst,((surf_ns3_link_t)link)->data->id);
 285      char * link_bdw = xbt_strdup(((surf_ns3_link_t)link)->data->bdw);
 286          char * link_lat = xbt_strdup(((surf_ns3_link_t)link)->data->lat);
 287          ((surf_ns3_link_t)link)->created = 0;
 288
 289          replace_bdw_ns3(link_bdw);
 290          replace_lat_ns3(link_lat);
 291 //       XBT_INFO("src (%s), dst (%s), src_id = %d, dst_id = %d",src,dst, src_id, dst_id);
 292      XBT_INFO("\tLink (%s) bdw:%s->%s lat:%s->%s",((surf_ns3_link_t)link)->data->id,
 293                  ((surf_ns3_link_t)link)->data->bdw,link_bdw,
 294                  ((surf_ns3_link_t)link)->data->lat,link_lat
 295                  );
 296
 297      //create link ns3
 298      ns3_nodes_t host_src = xbt_lib_get_or_null(host_lib,src,NS3_HOST_LEVEL);
 299      if(!host_src) host_src = xbt_lib_get_or_null(as_router_lib,src,NS3_ASR_LEVEL);
 300      ns3_nodes_t host_dst = xbt_lib_get_or_null(host_lib,dst,NS3_HOST_LEVEL);
 301      if(!host_dst) host_dst = xbt_lib_get_or_null(as_router_lib,dst,NS3_ASR_LEVEL);
 302
 303      if(host_src && host_dst){}
 304      else xbt_die("\tns3_add_link from %d to %d",host_src->node_num,host_dst->node_num);
 305
 306      ns3_add_link(host_src->node_num,host_dst->node_num,link_bdw,link_lat);
 307
 308      xbt_free(link_bdw);
 309      xbt_free(link_lat);
 310      }
 311    }
 312 }
 313
 314 static void define_callbacks_ns3(const char *filename)
 315 {
 316   surfxml_add_callback(STag_surfxml_host_cb_list, &parse_ns3_add_host);       //HOST
 317   surfxml_add_callback(STag_surfxml_router_cb_list, &parse_ns3_add_router);       //ROUTER
 318   surfxml_add_callback(STag_surfxml_link_cb_list, &parse_ns3_add_link);       //LINK
 319   surfxml_add_callback(STag_surfxml_AS_cb_list, &parse_ns3_add_AS);                   //AS
 320   surfxml_add_callback(STag_surfxml_cluster_cb_list, &parse_ns3_add_cluster); //CLUSTER
 321
 322   surfxml_add_callback(ETag_surfxml_platform_cb_list, &create_ns3_topology);    //get_one_link_routes
 323   surfxml_add_callback(ETag_surfxml_platform_cb_list, &parse_ns3_end_platform); //InitializeRoutes
 324 }
 325
 326 static void free_ns3_elmts(void * elmts)
 327 {
 328 }
 329
 330 static void free_ns3_link(void * elmts)
 331 {
 332         ns3_link_t link = elmts;
 333         free(link->id);
 334         free(link->bdw);
 335         free(link->lat);
 336         free(link);
 337 }
 338
 339 static void free_ns3_host(void * elmts)
 340 {
 341         ns3_nodes_t host = elmts;
 342         free(host);
 343 }
 344
 345 void surf_network_model_init_NS3(const char *filename)
 346 {
 347         surf_network_model = surf_model_init();
 348         surf_network_model->name = "network NS3";
 349         surf_network_model->extension.network.get_link_latency = ns3_get_link_latency;
 350         surf_network_model->extension.network.get_link_bandwidth = ns3_get_link_bandwidth;
 351         surf_network_model->extension.network.get_route = ns3_get_route;
 352         routing_model_create(sizeof(s_surf_ns3_link_t), NULL, NULL);
 353         define_callbacks_ns3(filename);
 354
 355         NS3_HOST_LEVEL = xbt_lib_add_level(host_lib,(void_f_pvoid_t)free_ns3_host);
 356         NS3_ASR_LEVEL  = xbt_lib_add_level(as_router_lib,(void_f_pvoid_t)free_ns3_host);
 357         NS3_LINK_LEVEL = xbt_lib_add_level(link_lib,(void_f_pvoid_t)free_ns3_link);
 358
 359         update_model_description(surf_network_model_description,
 360                     "NS3", surf_network_model);
 361 }