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 THROW_UNIMPLEMENTED;
  29 //  routing_component_full_t routing = (routing_component_full_t) rc;
  30 //  size_t table_size = routing->generic_routing.nb_index;
  31 //  xbt_dict_cursor_t c1 = NULL, c2 = NULL;
  32 //  char *k1, *d1, *k2, *d2;
  33 //  xbt_dict_foreach(routing->generic_routing.to_index, c1, k1, d1) {
  34 //    xbt_dict_foreach(routing->generic_routing.to_index, c2, k2, d2) {
  35 //      int *src_id = xbt_dict_get_or_null(routing->generic_routing.to_index, k1);
  36 //      int *dst_id = xbt_dict_get_or_null(routing->generic_routing.to_index, k2);
  37 //      xbt_assert(src_id && dst_id,
  38 //                 "Ask for route \"from\"(%s)  or \"to\"(%s) "
  39 //                 "no found in the local table", k1, k2);
  40 //      route_t route = TO_ROUTE_FULL(*src_id, *dst_id);
  41 //      if (route) {
  42 //        if (xbt_dynar_length(route->link_list) == 1) {
  43 //          void *link = *(void **) xbt_dynar_get_ptr(route->link_list, 0);
  44 //          onelink_t onelink = xbt_new0(s_onelink_t, 1);
  45 //          onelink->link_ptr = link;
  46 //          if (routing->generic_routing.hierarchy == SURF_ROUTING_BASE) {
  47 //            onelink->src->routing_obj->name = xbt_strdup(k1);
  48 //            onelink->src->routing_obj->id = atoi(k1);
  49 //            onelink->dst->routing_obj->name = xbt_strdup(k2);
  50 //            onelink->dst->routing_obj->id = atoi(k2);
  51 //          } else if (routing->generic_routing.hierarchy ==
  52 //                     SURF_ROUTING_RECURSIVE) {
  53 //            onelink->src = route->src_gateway;
  54 //            onelink->dst = route->dst_gateway;
  55 //          }
  56 //          xbt_dynar_push(ret, &onelink);
  57 //        }
  58 //      }
  59 //    }
  60 //  }
  61   return ret;
  62 }
  63
  64 static void full_get_route_and_latency(AS_t rc,
  65     network_element_t src, network_element_t dst,
  66                                        route_t res, double *lat)
  67 {
  68   XBT_DEBUG("full_get_route_and_latency from %s[%d] to %s[%d]",
  69       src->name,
  70       src->id,
  71       dst->name,
  72       dst->id  );
  73
  74   /* set utils vars */
  75   routing_component_full_t routing = (routing_component_full_t) rc;
  76   size_t table_size = routing->generic_routing.nb_index;
  77
  78   route_t e_route = NULL;
  79   void *link;
  80   unsigned int cpt = 0;
  81
  82   e_route = TO_ROUTE_FULL(src->id, dst->id);
  83
  84   if (e_route) {
  85     res->src_gateway = e_route->src_gateway;
  86     res->dst_gateway = e_route->dst_gateway;
  87     xbt_dynar_foreach(e_route->link_list, cpt, link) {
  88       xbt_dynar_push(res->link_list, &link);
  89       if (lat)
  90         *lat += surf_network_model->extension.network.get_link_latency(link);
  91     }
  92   }
  93 }
  94
  95 static void full_finalize(AS_t rc)
  96 {
  97   routing_component_full_t routing = (routing_component_full_t) rc;
  98   size_t table_size = routing->generic_routing.nb_index;
  99   int i, j;
 100   if (routing) {
 101     /* Delete routing table */
 102     for (i = 0; i < table_size; i++)
 103       for (j = 0; j < table_size; j++)
 104         generic_free_route(TO_ROUTE_FULL(i, j));
 105     xbt_free(routing->routing_table);
 106     model_generic_finalize(rc);
 107   }
 108 }
 109
 110 /* Creation routing model functions */
 111
 112 AS_t model_full_create(void)
 113 {
 114   routing_component_full_t new_component = (routing_component_full_t)
 115       model_generic_create_sized(sizeof(s_routing_component_full_t));
 116
 117   new_component->generic_routing.parse_route = model_full_set_route;
 118   new_component->generic_routing.parse_ASroute = model_full_set_route;
 119   new_component->generic_routing.get_route_and_latency =
 120       full_get_route_and_latency;
 121   new_component->generic_routing.get_onelink_routes = full_get_onelink_routes;
 122   new_component->generic_routing.finalize = full_finalize;
 123
 124   return (AS_t) new_component;
 125 }
 126
 127 void model_full_end(AS_t current_routing)
 128 {
 129   unsigned int i;
 130   route_t e_route;
 131
 132   /* set utils vars */
 133   routing_component_full_t routing =
 134       ((routing_component_full_t) current_routing);
 135   size_t table_size = routing->generic_routing.nb_index;
 136
 137   /* Create table if necessary */
 138   if (!routing->routing_table)
 139     routing->routing_table = xbt_new0(route_t, table_size * table_size);
 140
 141   /* Add the loopback if needed */
 142   if (global_routing->loopback && current_routing->hierarchy == SURF_ROUTING_BASE) {
 143     for (i = 0; i < table_size; i++) {
 144       e_route = TO_ROUTE_FULL(i, i);
 145       if (!e_route) {
 146         e_route = xbt_new0(s_route_t, 1);
 147         e_route->src_gateway = NULL;
 148         e_route->dst_gateway = NULL;
 149         e_route->link_list = xbt_dynar_new(global_routing->size_of_link, NULL);
 150         xbt_dynar_push(e_route->link_list, &global_routing->loopback);
 151         TO_ROUTE_FULL(i, i) = e_route;
 152       }
 153     }
 154   }
 155 }
 156
 157 static int full_pointer_resource_cmp(const void *a, const void *b)
 158 {
 159   return a != b;
 160 }
 161
 162 void model_full_set_route(AS_t rc, const char *src,
 163                           const char *dst, route_t route)
 164 {
 165   network_element_t src_net_elm, dst_net_elm;
 166
 167   src_net_elm = (network_element_t)xbt_lib_get_or_null(host_lib, src, ROUTING_HOST_LEVEL);
 168   dst_net_elm = (network_element_t)xbt_lib_get_or_null(host_lib, dst, ROUTING_HOST_LEVEL);
 169   if(!src_net_elm) src_net_elm = (network_element_t)xbt_lib_get_or_null(as_router_lib, src, ROUTING_ASR_LEVEL);
 170   if(!dst_net_elm) dst_net_elm = (network_element_t)xbt_lib_get_or_null(as_router_lib, dst, ROUTING_ASR_LEVEL);
 171
 172   xbt_assert(src_net_elm, "Network elements %s not found", src);
 173   xbt_assert(dst_net_elm, "Network elements %s not found", dst);
 174
 175   routing_component_full_t routing = (routing_component_full_t) rc;
 176   size_t table_size = routing->generic_routing.nb_index;
 177
 178   xbt_assert(!xbt_dynar_is_empty(route->link_list),
 179              "Invalid count of links, must be greater than zero (%s,%s)",
 180              src, dst);
 181
 182   if (!routing->routing_table)
 183     routing->routing_table = xbt_new0(route_t, table_size * table_size);
 184
 185   if (TO_ROUTE_FULL(src_net_elm->id, dst_net_elm->id)) {
 186     char *link_name;
 187     unsigned int i;
 188     xbt_dynar_t link_route_to_test =
 189         xbt_dynar_new(global_routing->size_of_link, NULL);
 190     xbt_dynar_foreach(route->link_list, i, link_name) {
 191       void *link = xbt_lib_get_or_null(link_lib, link_name, SURF_LINK_LEVEL);
 192       xbt_assert(link, "Link : '%s' doesn't exists.", link_name);
 193       xbt_dynar_push(link_route_to_test, &link);
 194     }
 195     if (xbt_dynar_compare(TO_ROUTE_FULL(src_net_elm->id, dst_net_elm->id)->link_list,
 196                           link_route_to_test, full_pointer_resource_cmp)) {
 197       surf_parse_error("A route between \"%s\" and \"%s\" already exists "
 198                        "with a different content. "
 199                        "If you are trying to define a reverse route, "
 200                        "you must set the symmetrical=no attribute to "
 201                        "your routes tags.", src, dst);
 202     } else {
 203       surf_parse_warn("Ignoring the identical redefinition of the route "
 204                       "between \"%s\" and \"%s\"", src, dst);
 205     }
 206   } else {
 207     if (!route->dst_gateway && !route->src_gateway)
 208       XBT_DEBUG("Load Route from \"%s\" to \"%s\"", src, dst);
 209     else {
 210 // FIXME We can call a gw wich is down the current AS (cf g5k.xml) but not upper.
 211 //      AS_t subas = xbt_dict_get_or_null(rc->routing_sons, src);
 212 //      if (subas == NULL)
 213 //        surf_parse_error("The source of an ASroute must be a sub-AS "
 214 //                         "declared within the current AS, "
 215 //                         "but '%s' is not an AS within '%s'", src, rc->name);
 216 //      if (subas->to_index
 217 //          && xbt_dict_get_or_null(subas->to_index, route->src_gateway) == NULL)
 218 //        surf_parse_error("In an ASroute, source gateway must be part of "
 219 //                         "the source sub-AS (in particular, being in a "
 220 //                         "sub-sub-AS is not allowed), "
 221 //                         "but '%s' is not in '%s'.",
 222 //                         route->src_gateway, subas->name);
 223 //
 224 //      subas = xbt_dict_get_or_null(rc->routing_sons, dst);
 225 //      if (subas == NULL)
 226 //        surf_parse_error("The destination of an ASroute must be a sub-AS "
 227 //                         "declared within the current AS, "
 228 //                         "but '%s' is not an AS within '%s'", dst, rc->name);
 229 //      if (subas->to_index
 230 //          && xbt_dict_get_or_null(subas->to_index, route->dst_gateway) == NULL)
 231 //        surf_parse_error("In an ASroute, destination gateway must be "
 232 //                         "part of the destination sub-AS (in particular, "
 233 //                         "in a sub-sub-AS is not allowed), "
 234 //                         "but '%s' is not in '%s'.",
 235 //                         route->dst_gateway, subas->name);
 236
 237       XBT_DEBUG("Load ASroute from \"%s(%s)\" to \"%s(%s)\"",
 238                 src, route->src_gateway->name, dst, route->dst_gateway->name);
 239       if (route->dst_gateway->rc_type == SURF_NETWORK_ELEMENT_NULL)
 240         xbt_die("The dst_gateway '%s' does not exist!", route->dst_gateway->name);
 241       if (route->src_gateway->rc_type == SURF_NETWORK_ELEMENT_NULL)
 242         xbt_die("The src_gateway '%s' does not exist!", route->src_gateway->name);
 243     }
 244     TO_ROUTE_FULL(src_net_elm->id, dst_net_elm->id) =
 245         generic_new_extended_route(rc->hierarchy, route, 1);
 246     xbt_dynar_shrink(TO_ROUTE_FULL(src_net_elm->id, dst_net_elm->id)->link_list, 0);
 247   }
 248
 249   if (A_surfxml_route_symmetrical == A_surfxml_route_symmetrical_YES
 250       || A_surfxml_ASroute_symmetrical == A_surfxml_ASroute_symmetrical_YES) {
 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(global_routing->size_of_link, 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 }