src/surf/surf_routing_full.c

   1 /* Copyright (c) 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_routing_private.h"
   8
   9 /* Global vars */
  10 extern routing_global_t global_routing;
  11 extern int surf_parse_lineno;
  12
  13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_full, surf, "Routing part of surf");
  14
  15 #define TO_ROUTE_FULL(i,j) routing->routing_table[(i)+(j)*table_size]
  16
  17 /* Routing model structure */
  18
  19 typedef struct s_routing_component_full {
  20   s_as_t generic_routing;
  21   route_t *routing_table;
  22 } s_routing_component_full_t, *routing_component_full_t;
  23
  24 /* Business methods */
  25 static xbt_dynar_t full_get_onelink_routes(AS_t rc)
  26 {
  27   xbt_dynar_t ret = xbt_dynar_new(sizeof(onelink_t), xbt_free);
  28   routing_component_full_t routing = (routing_component_full_t) rc;
  29
  30   int src,dst;
  31   int table_size = xbt_dynar_length(rc->index_network_elm);
  32
  33   for(src=0; src < table_size; src++) {
  34     for(dst=0; dst< table_size; dst++) {
  35       route_t route = TO_ROUTE_FULL(src, dst);
  36       if (route) {
  37         if (xbt_dynar_length(route->link_list) == 1) {
  38           void *link = *(void **) xbt_dynar_get_ptr(route->link_list, 0);
  39           onelink_t onelink = xbt_new0(s_onelink_t, 1);
  40           onelink->link_ptr = link;
  41           if (routing->generic_routing.hierarchy == SURF_ROUTING_BASE) {
  42             onelink->src = xbt_dynar_get_as(routing->generic_routing.index_network_elm,src,network_element_t);
  43             onelink->src->id = src;
  44             onelink->dst = xbt_dynar_get_as(routing->generic_routing.index_network_elm,dst,network_element_t);
  45             onelink->dst->id = dst;
  46           } else if (routing->generic_routing.hierarchy ==
  47                      SURF_ROUTING_RECURSIVE) {
  48             onelink->src = route->src_gateway;
  49             onelink->dst = route->dst_gateway;
  50           }
  51           xbt_dynar_push(ret, &onelink);
  52         }
  53       }
  54     }
  55   }
  56   return ret;
  57 }
  58
  59 static void full_get_route_and_latency(AS_t rc,
  60     network_element_t src, network_element_t dst,
  61                                        route_t res, double *lat)
  62 {
  63   XBT_DEBUG("full_get_route_and_latency from %s[%d] to %s[%d]",
  64       src->name,
  65       src->id,
  66       dst->name,
  67       dst->id  );
  68
  69   /* set utils vars */
  70   routing_component_full_t routing = (routing_component_full_t) rc;
  71   size_t table_size = xbt_dynar_length(routing->generic_routing.index_network_elm);
  72
  73   route_t e_route = NULL;
  74   void *link;
  75   unsigned int cpt = 0;
  76
  77   e_route = TO_ROUTE_FULL(src->id, dst->id);
  78
  79   if (e_route) {
  80     res->src_gateway = e_route->src_gateway;
  81     res->dst_gateway = e_route->dst_gateway;
  82     xbt_dynar_foreach(e_route->link_list, cpt, link) {
  83       xbt_dynar_push(res->link_list, &link);
  84       if (lat)
  85         *lat += surf_network_model->extension.network.get_link_latency(link);
  86     }
  87   }
  88 }
  89
  90 static void full_finalize(AS_t rc)
  91 {
  92   routing_component_full_t routing = (routing_component_full_t) rc;
  93   size_t table_size = xbt_dynar_length(routing->generic_routing.index_network_elm);
  94   int i, j;
  95   if (routing) {
  96     /* Delete routing table */
  97     for (i = 0; i < table_size; i++)
  98       for (j = 0; j < table_size; j++)
  99         generic_free_route(TO_ROUTE_FULL(i, j));
 100     xbt_free(routing->routing_table);
 101     model_generic_finalize(rc);
 102   }
 103 }
 104
 105 /* Creation routing model functions */
 106
 107 AS_t model_full_create(void)
 108 {
 109   routing_component_full_t new_component = (routing_component_full_t)
 110       model_generic_create_sized(sizeof(s_routing_component_full_t));
 111
 112   new_component->generic_routing.parse_route = model_full_set_route;
 113   new_component->generic_routing.parse_ASroute = model_full_set_route;
 114   new_component->generic_routing.get_route_and_latency =
 115       full_get_route_and_latency;
 116   new_component->generic_routing.get_onelink_routes = full_get_onelink_routes;
 117   new_component->generic_routing.finalize = full_finalize;
 118
 119   return (AS_t) new_component;
 120 }
 121
 122 void model_full_end(AS_t current_routing)
 123 {
 124   unsigned int i;
 125   route_t e_route;
 126
 127   /* set utils vars */
 128   routing_component_full_t routing =
 129       ((routing_component_full_t) current_routing);
 130   size_t table_size = xbt_dynar_length(routing->generic_routing.index_network_elm);
 131
 132   /* Create table if necessary */
 133   if (!routing->routing_table)
 134     routing->routing_table = xbt_new0(route_t, table_size * table_size);
 135
 136   /* Add the loopback if needed */
 137   if (global_routing->loopback && current_routing->hierarchy == SURF_ROUTING_BASE) {
 138     for (i = 0; i < table_size; i++) {
 139       e_route = TO_ROUTE_FULL(i, i);
 140       if (!e_route) {
 141         e_route = xbt_new0(s_route_t, 1);
 142         e_route->src_gateway = NULL;
 143         e_route->dst_gateway = NULL;
 144         e_route->link_list = xbt_dynar_new(global_routing->size_of_link, NULL);
 145         xbt_dynar_push(e_route->link_list, &global_routing->loopback);
 146         TO_ROUTE_FULL(i, i) = e_route;
 147       }
 148     }
 149   }
 150 }
 151
 152 static int full_pointer_resource_cmp(const void *a, const void *b)
 153 {
 154   return a != b;
 155 }
 156
 157 void model_full_set_route(AS_t rc, const char *src,
 158                           const char *dst, route_t route)
 159 {
 160   network_element_t src_net_elm, dst_net_elm;
 161
 162   src_net_elm = (network_element_t)xbt_lib_get_or_null(host_lib, src, ROUTING_HOST_LEVEL);
 163   dst_net_elm = (network_element_t)xbt_lib_get_or_null(host_lib, dst, ROUTING_HOST_LEVEL);
 164   if(!src_net_elm) src_net_elm = (network_element_t)xbt_lib_get_or_null(as_router_lib, src, ROUTING_ASR_LEVEL);
 165   if(!dst_net_elm) dst_net_elm = (network_element_t)xbt_lib_get_or_null(as_router_lib, dst, ROUTING_ASR_LEVEL);
 166
 167   xbt_assert(src_net_elm, "Network elements %s not found", src);
 168   xbt_assert(dst_net_elm, "Network elements %s not found", dst);
 169
 170   routing_component_full_t routing = (routing_component_full_t) rc;
 171   size_t table_size = xbt_dynar_length(routing->generic_routing.index_network_elm);
 172
 173   xbt_assert(!xbt_dynar_is_empty(route->link_list),
 174              "Invalid count of links, must be greater than zero (%s,%s)",
 175              src, dst);
 176
 177   if (!routing->routing_table)
 178     routing->routing_table = xbt_new0(route_t, table_size * table_size);
 179
 180   if (TO_ROUTE_FULL(src_net_elm->id, dst_net_elm->id)) {
 181     char *link_name;
 182     unsigned int i;
 183     xbt_dynar_t link_route_to_test =
 184         xbt_dynar_new(global_routing->size_of_link, NULL);
 185     xbt_dynar_foreach(route->link_list, i, link_name) {
 186       void *link = xbt_lib_get_or_null(link_lib, link_name, SURF_LINK_LEVEL);
 187       xbt_assert(link, "Link : '%s' doesn't exists.", link_name);
 188       xbt_dynar_push(link_route_to_test, &link);
 189     }
 190     if (xbt_dynar_compare(TO_ROUTE_FULL(src_net_elm->id, dst_net_elm->id)->link_list,
 191                           link_route_to_test, full_pointer_resource_cmp)) {
 192       surf_parse_error("A route between \"%s\" and \"%s\" already exists "
 193                        "with a different content. "
 194                        "If you are trying to define a reverse route, "
 195                        "you must set the symmetrical=no attribute to "
 196                        "your routes tags.", src, dst);
 197     } else {
 198       surf_parse_warn("Ignoring the identical redefinition of the route "
 199                       "between \"%s\" and \"%s\"", src, dst);
 200     }
 201   } else {
 202     if (!route->dst_gateway && !route->src_gateway)
 203       XBT_DEBUG("Load Route from \"%s\" to \"%s\"", src, dst);
 204     else {
 205 // FIXME We can call a gw wich is down the current AS (cf g5k.xml) but not upper.
 206 //      AS_t subas = xbt_dict_get_or_null(rc->routing_sons, src);
 207 //      if (subas == NULL)
 208 //        surf_parse_error("The source of an ASroute must be a sub-AS "
 209 //                         "declared within the current AS, "
 210 //                         "but '%s' is not an AS within '%s'", src, rc->name);
 211 //      if (subas->to_index
 212 //          && xbt_dict_get_or_null(subas->to_index, route->src_gateway) == NULL)
 213 //        surf_parse_error("In an ASroute, source gateway must be part of "
 214 //                         "the source sub-AS (in particular, being in a "
 215 //                         "sub-sub-AS is not allowed), "
 216 //                         "but '%s' is not in '%s'.",
 217 //                         route->src_gateway, subas->name);
 218 //
 219 //      subas = xbt_dict_get_or_null(rc->routing_sons, dst);
 220 //      if (subas == NULL)
 221 //        surf_parse_error("The destination of an ASroute must be a sub-AS "
 222 //                         "declared within the current AS, "
 223 //                         "but '%s' is not an AS within '%s'", dst, rc->name);
 224 //      if (subas->to_index
 225 //          && xbt_dict_get_or_null(subas->to_index, route->dst_gateway) == NULL)
 226 //        surf_parse_error("In an ASroute, destination gateway must be "
 227 //                         "part of the destination sub-AS (in particular, "
 228 //                         "in a sub-sub-AS is not allowed), "
 229 //                         "but '%s' is not in '%s'.",
 230 //                         route->dst_gateway, subas->name);
 231
 232       XBT_DEBUG("Load ASroute from \"%s(%s)\" to \"%s(%s)\"",
 233                 src, route->src_gateway->name, dst, route->dst_gateway->name);
 234       if (route->dst_gateway->rc_type == SURF_NETWORK_ELEMENT_NULL)
 235         xbt_die("The dst_gateway '%s' does not exist!", route->dst_gateway->name);
 236       if (route->src_gateway->rc_type == SURF_NETWORK_ELEMENT_NULL)
 237         xbt_die("The src_gateway '%s' does not exist!", route->src_gateway->name);
 238     }
 239     TO_ROUTE_FULL(src_net_elm->id, dst_net_elm->id) =
 240         generic_new_extended_route(rc->hierarchy, route, 1);
 241     xbt_dynar_shrink(TO_ROUTE_FULL(src_net_elm->id, dst_net_elm->id)->link_list, 0);
 242   }
 243
 244   if (A_surfxml_route_symmetrical == A_surfxml_route_symmetrical_YES
 245       || A_surfxml_ASroute_symmetrical == A_surfxml_ASroute_symmetrical_YES) {
 246     if (route->dst_gateway && route->src_gateway) {
 247       network_element_t gw_tmp;
 248       gw_tmp = route->src_gateway;
 249       route->src_gateway = route->dst_gateway;
 250       route->dst_gateway = gw_tmp;
 251     }
 252     if (TO_ROUTE_FULL(dst_net_elm->id, src_net_elm->id)) {
 253       char *link_name;
 254       unsigned int i;
 255       xbt_dynar_t link_route_to_test =
 256           xbt_dynar_new(global_routing->size_of_link, NULL);
 257       for (i = xbt_dynar_length(route->link_list); i > 0; i--) {
 258         link_name = xbt_dynar_get_as(route->link_list, i - 1, void *);
 259         void *link = xbt_lib_get_or_null(link_lib, link_name, SURF_LINK_LEVEL);
 260         xbt_assert(link, "Link : '%s' doesn't exists.", link_name);
 261         xbt_dynar_push(link_route_to_test, &link);
 262       }
 263       xbt_assert(!xbt_dynar_compare(TO_ROUTE_FULL(dst_net_elm->id, src_net_elm->id)->link_list,
 264                                     link_route_to_test,
 265                                     full_pointer_resource_cmp),
 266                  "The route between \"%s\" and \"%s\" already exists", src,
 267                  dst);
 268     } else {
 269       if (!route->dst_gateway && !route->src_gateway)
 270         XBT_DEBUG("Load Route from \"%s\" to \"%s\"", dst, src);
 271       else
 272         XBT_DEBUG("Load ASroute from \"%s(%s)\" to \"%s(%s)\"",
 273                   dst, route->src_gateway->name, src, route->dst_gateway->name);
 274       TO_ROUTE_FULL(dst_net_elm->id, src_net_elm->id) =
 275           generic_new_extended_route(rc->hierarchy, route, 0);
 276       xbt_dynar_shrink(TO_ROUTE_FULL(dst_net_elm->id, src_net_elm->id)->link_list, 0);
 277     }
 278   }
 279 }