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 (rc->hierarchy == SURF_ROUTING_BASE) {
  42             onelink->src = xbt_dynar_get_as(rc->index_network_elm,src,network_element_t);
  43             onelink->src->id = src;
  44             onelink->dst = xbt_dynar_get_as(rc->index_network_elm,dst,network_element_t);
  45             onelink->dst->id = dst;
  46           } else if (rc->hierarchy == SURF_ROUTING_RECURSIVE) {
  47             onelink->src = route->src_gateway;
  48             onelink->dst = route->dst_gateway;
  49           }
  50           xbt_dynar_push(ret, &onelink);
  51           XBT_DEBUG("Push route from '%d' to '%d'",
  52               src,
  53               dst);
  54         }
  55       }
  56     }
  57   }
  58   return ret;
  59 }
  60
  61 static void full_get_route_and_latency(AS_t rc,
  62     network_element_t src, network_element_t dst,
  63                                        route_t res, double *lat)
  64 {
  65   XBT_DEBUG("full_get_route_and_latency from %s[%d] to %s[%d]",
  66       src->name,
  67       src->id,
  68       dst->name,
  69       dst->id  );
  70
  71   /* set utils vars */
  72   routing_component_full_t routing = (routing_component_full_t) rc;
  73   size_t table_size = xbt_dynar_length(routing->generic_routing.index_network_elm);
  74
  75   route_t e_route = NULL;
  76   void *link;
  77   unsigned int cpt = 0;
  78
  79   e_route = TO_ROUTE_FULL(src->id, dst->id);
  80
  81   if (e_route) {
  82     res->src_gateway = e_route->src_gateway;
  83     res->dst_gateway = e_route->dst_gateway;
  84     xbt_dynar_foreach(e_route->link_list, cpt, link) {
  85       xbt_dynar_push(res->link_list, &link);
  86       if (lat)
  87         *lat += surf_network_model->extension.network.get_link_latency(link);
  88     }
  89   }
  90 }
  91
  92 static void full_finalize(AS_t rc)
  93 {
  94   routing_component_full_t routing = (routing_component_full_t) rc;
  95   size_t table_size = xbt_dynar_length(routing->generic_routing.index_network_elm);
  96   int i, j;
  97   if (routing) {
  98     /* Delete routing table */
  99     for (i = 0; i < table_size; i++)
 100       for (j = 0; j < table_size; j++)
 101         generic_free_route(TO_ROUTE_FULL(i, j));
 102     xbt_free(routing->routing_table);
 103     model_generic_finalize(rc);
 104   }
 105 }
 106
 107 /* Creation routing model functions */
 108
 109 AS_t model_full_create(void)
 110 {
 111   routing_component_full_t new_component = (routing_component_full_t)
 112       model_generic_create_sized(sizeof(s_routing_component_full_t));
 113
 114   new_component->generic_routing.parse_route = model_full_set_route;
 115   new_component->generic_routing.parse_ASroute = model_full_set_route;
 116   new_component->generic_routing.get_route_and_latency =
 117       full_get_route_and_latency;
 118   new_component->generic_routing.get_onelink_routes = full_get_onelink_routes;
 119   new_component->generic_routing.finalize = full_finalize;
 120
 121   return (AS_t) new_component;
 122 }
 123
 124 void model_full_end(AS_t current_routing)
 125 {
 126   unsigned int i;
 127   route_t e_route;
 128
 129   /* set utils vars */
 130   routing_component_full_t routing =
 131       ((routing_component_full_t) current_routing);
 132   size_t table_size = xbt_dynar_length(routing->generic_routing.index_network_elm);
 133
 134   /* Create table if necessary */
 135   if (!routing->routing_table)
 136     routing->routing_table = xbt_new0(route_t, table_size * table_size);
 137
 138   /* Add the loopback if needed */
 139   if (global_routing->loopback && current_routing->hierarchy == SURF_ROUTING_BASE) {
 140     for (i = 0; i < table_size; i++) {
 141       e_route = TO_ROUTE_FULL(i, i);
 142       if (!e_route) {
 143         e_route = xbt_new0(s_route_t, 1);
 144         e_route->src_gateway = NULL;
 145         e_route->dst_gateway = NULL;
 146         e_route->link_list = xbt_dynar_new(sizeof(sg_routing_link_t), NULL);
 147         xbt_dynar_push(e_route->link_list, &global_routing->loopback);
 148         TO_ROUTE_FULL(i, i) = e_route;
 149       }
 150     }
 151   }
 152 }
 153
 154 static int full_pointer_resource_cmp(const void *a, const void *b)
 155 {
 156   return a != b;
 157 }
 158
 159 void model_full_set_route(AS_t rc, const char *src,
 160                           const char *dst, route_t route)
 161 {
 162   network_element_t src_net_elm, dst_net_elm;
 163   int as_route = 0;
 164   src_net_elm = xbt_lib_get_or_null(host_lib, src, ROUTING_HOST_LEVEL);
 165   dst_net_elm = xbt_lib_get_or_null(host_lib, dst, ROUTING_HOST_LEVEL);
 166   if (!src_net_elm)
 167     src_net_elm = xbt_lib_get_or_null(as_router_lib, src, ROUTING_ASR_LEVEL);
 168   if (!dst_net_elm)
 169     dst_net_elm = xbt_lib_get_or_null(as_router_lib, dst, ROUTING_ASR_LEVEL);
 170
 171   xbt_assert(src_net_elm, "Network elements %s not found", src);
 172   xbt_assert(dst_net_elm, "Network elements %s not found", dst);
 173
 174   routing_component_full_t routing = (routing_component_full_t) rc;
 175   size_t table_size = xbt_dynar_length(routing->generic_routing.index_network_elm);
 176
 177   xbt_assert(!xbt_dynar_is_empty(route->link_list),
 178              "Invalid count of links, must be greater than zero (%s,%s)",
 179              src, dst);
 180
 181   if (!routing->routing_table)
 182     routing->routing_table = xbt_new0(route_t, table_size * table_size);
 183
 184   if (TO_ROUTE_FULL(src_net_elm->id, dst_net_elm->id)) {
 185     char *link_name;
 186     unsigned int i;
 187     xbt_dynar_t link_route_to_test =
 188         xbt_dynar_new(sizeof(sg_routing_link_t), NULL);
 189     xbt_dynar_foreach(route->link_list, i, link_name) {
 190       void *link = xbt_lib_get_or_null(link_lib, link_name, SURF_LINK_LEVEL);
 191       xbt_assert(link, "Link : '%s' doesn't exists.", link_name);
 192       xbt_dynar_push(link_route_to_test, &link);
 193     }
 194     if (xbt_dynar_compare(TO_ROUTE_FULL(src_net_elm->id, dst_net_elm->id)->link_list,
 195                           link_route_to_test, full_pointer_resource_cmp)) {
 196       surf_parse_error("A route between \"%s\" and \"%s\" already exists "
 197                        "with a different content. "
 198                        "If you are trying to define a reverse route, "
 199                        "you must set the symmetrical=no attribute to "
 200                        "your routes tags.", src, dst);
 201     } else {
 202       surf_parse_warn("Ignoring the identical redefinition of the route "
 203                       "between \"%s\" and \"%s\"", src, dst);
 204     }
 205   } else {
 206     if (!route->dst_gateway && !route->src_gateway)
 207       XBT_DEBUG("Load Route from \"%s\" to \"%s\"", src, dst);
 208     else {
 209 // FIXME We can call a gw wich is down the current AS (cf g5k.xml) but not upper.
 210 //      AS_t subas = xbt_dict_get_or_null(rc->routing_sons, src);
 211 //      if (subas == NULL)
 212 //        surf_parse_error("The source of an ASroute must be a sub-AS "
 213 //                         "declared within the current AS, "
 214 //                         "but '%s' is not an AS within '%s'", src, rc->name);
 215 //      if (subas->to_index
 216 //          && xbt_dict_get_or_null(subas->to_index, route->src_gateway) == NULL)
 217 //        surf_parse_error("In an ASroute, source gateway must be part of "
 218 //                         "the source sub-AS (in particular, being in a "
 219 //                         "sub-sub-AS is not allowed), "
 220 //                         "but '%s' is not in '%s'.",
 221 //                         route->src_gateway, subas->name);
 222 //
 223 //      subas = xbt_dict_get_or_null(rc->routing_sons, dst);
 224 //      if (subas == NULL)
 225 //        surf_parse_error("The destination of an ASroute must be a sub-AS "
 226 //                         "declared within the current AS, "
 227 //                         "but '%s' is not an AS within '%s'", dst, rc->name);
 228 //      if (subas->to_index
 229 //          && xbt_dict_get_or_null(subas->to_index, route->dst_gateway) == NULL)
 230 //        surf_parse_error("In an ASroute, destination gateway must be "
 231 //                         "part of the destination sub-AS (in particular, "
 232 //                         "in a sub-sub-AS is not allowed), "
 233 //                         "but '%s' is not in '%s'.",
 234 //                         route->dst_gateway, subas->name);
 235       as_route = 1;
 236       XBT_DEBUG("Load ASroute from \"%s(%s)\" to \"%s(%s)\"",
 237                 src, route->src_gateway->name, dst, route->dst_gateway->name);
 238       if (route->dst_gateway->rc_type == SURF_NETWORK_ELEMENT_NULL)
 239         xbt_die("The dst_gateway '%s' does not exist!", route->dst_gateway->name);
 240       if (route->src_gateway->rc_type == SURF_NETWORK_ELEMENT_NULL)
 241         xbt_die("The src_gateway '%s' does not exist!", route->src_gateway->name);
 242     }
 243     TO_ROUTE_FULL(src_net_elm->id, dst_net_elm->id) =
 244         generic_new_extended_route(rc->hierarchy, route, 1);
 245     xbt_dynar_shrink(TO_ROUTE_FULL(src_net_elm->id, dst_net_elm->id)->link_list, 0);
 246   }
 247
 248   if ( (A_surfxml_route_symmetrical == A_surfxml_route_symmetrical_YES && as_route == 0)
 249        || (A_surfxml_ASroute_symmetrical == A_surfxml_ASroute_symmetrical_YES && as_route == 1)
 250      ) {
 251     if (route->dst_gateway && route->src_gateway) {
 252       network_element_t gw_tmp;
 253       gw_tmp = route->src_gateway;
 254       route->src_gateway = route->dst_gateway;
 255       route->dst_gateway = gw_tmp;
 256     }
 257     if (TO_ROUTE_FULL(dst_net_elm->id, src_net_elm->id)) {
 258       char *link_name;
 259       unsigned int i;
 260       xbt_dynar_t link_route_to_test =
 261           xbt_dynar_new(sizeof(sg_routing_link_t), NULL);
 262       for (i = xbt_dynar_length(route->link_list); i > 0; i--) {
 263         link_name = xbt_dynar_get_as(route->link_list, i - 1, void *);
 264         void *link = xbt_lib_get_or_null(link_lib, link_name, SURF_LINK_LEVEL);
 265         xbt_assert(link, "Link : '%s' doesn't exists.", link_name);
 266         xbt_dynar_push(link_route_to_test, &link);
 267       }
 268       xbt_assert(!xbt_dynar_compare(TO_ROUTE_FULL(dst_net_elm->id, src_net_elm->id)->link_list,
 269                                     link_route_to_test,
 270                                     full_pointer_resource_cmp),
 271                  "The route between \"%s\" and \"%s\" already exists", src,
 272                  dst);
 273     } else {
 274       if (!route->dst_gateway && !route->src_gateway)
 275         XBT_DEBUG("Load Route from \"%s\" to \"%s\"", dst, src);
 276       else
 277         XBT_DEBUG("Load ASroute from \"%s(%s)\" to \"%s(%s)\"",
 278                   dst, route->src_gateway->name, src, route->dst_gateway->name);
 279       TO_ROUTE_FULL(dst_net_elm->id, src_net_elm->id) =
 280           generic_new_extended_route(rc->hierarchy, route, 0);
 281       xbt_dynar_shrink(TO_ROUTE_FULL(dst_net_elm->id, src_net_elm->id)->link_list, 0);
 282     }
 283   }
 284 }