X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/fa2100f09707b904904ddb3bd7b05d07fad350e2..ab18a775a1f75bc5899cab352f64334fee259216:/src/surf/network.c

diff --git a/src/surf/network.c b/src/surf/network.c
index 6c0e54aa8a..eb432eb8ce 100644
--- a/src/surf/network.c
+++ b/src/surf/network.c
@@ -1,50 +1,51 @@
-/* Authors: Arnaud Legrand                                                  */
+/* 	$Id$	 */
+
+/* Copyright (c) 2004 Arnaud Legrand. All rights reserved.                  */
 
 /* This program is free software; you can redistribute it and/or modify it
-   under the terms of the license (GNU LGPL) which comes with this package. */
+ * under the terms of the license (GNU LGPL) which comes with this package. */
 
 #include "network_private.h"
-#include "xbt/dict.h"
-
-#define SG_TCP_CTE_GAMMA 20000.0
+#include "xbt/log.h"
 
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(network, surf,
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network, surf,
 				"Logging specific to the SURF network module");
 
 surf_network_resource_t surf_network_resource = NULL;
 
-static xbt_dict_t network_link_set = NULL;
-static xbt_dict_t network_card_set = NULL;
-
-static int card_number = 0;
-static network_link_t **routing_table = NULL;
-static int *routing_table_size = NULL;
+xbt_dict_t network_link_set = NULL;
+xbt_dict_t network_card_set = NULL;
 
-#define ROUTE(i,j) routing_table[(i)+(j)*card_number]
-#define ROUTE_SIZE(i,j) routing_table_size[(i)+(j)*card_number]
+int card_number = 0;
+network_link_CM02_t **routing_table = NULL;
+int *routing_table_size = NULL;
+static network_link_CM02_t loopback = NULL;
 
 static void create_routing_table(void)
 {
-  routing_table = xbt_new0(network_link_t *,card_number*card_number);
-  routing_table_size = xbt_new0(int,card_number*card_number);
+  routing_table = xbt_new0(network_link_CM02_t *, card_number * card_number);
+  routing_table_size = xbt_new0(int, card_number * card_number);
 }
 
 static void network_link_free(void *nw_link)
 {
-  xbt_free(nw_link);
+  free(((network_link_CM02_t)nw_link)->name);
+  free(nw_link);
 }
 
-static network_link_t network_link_new(const char *name,
-				       xbt_maxmin_float_t bw_initial,
+static network_link_CM02_t network_link_new(char *name,
+				       double bw_initial,
 				       tmgr_trace_t bw_trace,
-				       xbt_maxmin_float_t lat_initial,
+				       double lat_initial,
 				       tmgr_trace_t lat_trace,
-				       e_surf_network_link_state_t state_initial,
-				       tmgr_trace_t state_trace)
+				       e_surf_network_link_state_t
+				       state_initial,
+				       tmgr_trace_t state_trace,
+				       e_surf_network_link_sharing_policy_t policy)
 {
-  network_link_t nw_link = xbt_new0(s_network_link_t, 1);
+  network_link_CM02_t nw_link = xbt_new0(s_network_link_CM02_t, 1);
+
 
-  
   nw_link->resource = (surf_resource_t) surf_network_resource;
   nw_link->name = name;
   nw_link->bw_current = bw_initial;
@@ -61,217 +62,189 @@ static network_link_t network_link_new(const char *name,
 	tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
 
   nw_link->constraint =
-      lmm_constraint_new(maxmin_system, nw_link,
-			 nw_link->bw_current);
+      lmm_constraint_new(maxmin_system, nw_link, nw_link->bw_current);
+
+  if(policy == SURF_NETWORK_LINK_FATPIPE)
+    lmm_constraint_shared(nw_link->constraint);
 
   xbt_dict_set(network_link_set, name, nw_link, network_link_free);
 
   return nw_link;
 }
 
-static int network_card_new(const char *card_name)
+static void network_card_free(void *nw_card)
 {
-  network_card_t card = NULL;
+  free(((network_card_CM02_t)nw_card)->name);
+  free(nw_card);
+}
 
-  xbt_dict_get(network_card_set, card_name, (void *) &card);
+static int network_card_new(const char *card_name)
+{
+  network_card_CM02_t card = xbt_dict_get_or_null(network_card_set, card_name);
 
-  if(!card) {
-    card = xbt_new0(s_network_card_t,1);
-    card->name=xbt_strdup(card_name);
-    card->id=card_number++;
-    xbt_dict_set(network_card_set, card_name, card, NULL);
-  } 
+  if (!card) {
+    card = xbt_new0(s_network_card_CM02_t, 1);
+    card->name = xbt_strdup(card_name);
+    card->id = card_number++;
+    xbt_dict_set(network_card_set, card_name, card, network_card_free);
+  }
   return card->id;
 }
 
-static void route_new(int src_id, int dst_id,
-		      char* *links, int nb_link)
+static void route_new(int src_id, int dst_id, char **links, int nb_link)
 {
-  network_link_t *link_list = NULL;
-  int i ; 
-
-  ROUTE_SIZE(src_id,dst_id) = nb_link;
-  link_list = (ROUTE(src_id,dst_id) = xbt_new0(network_link_t,nb_link));
-  for(i=0; i < nb_link; i++) {
-    xbt_dict_get(network_link_set,links[i], (void *) &(link_list[i]));
-    xbt_free(links[i]);
+  network_link_CM02_t *link_list = NULL;
+  int i;
+
+  ROUTE_SIZE(src_id, dst_id) = nb_link;
+  link_list = (ROUTE(src_id, dst_id) = xbt_new0(network_link_CM02_t, nb_link));
+  for (i = 0; i < nb_link; i++) {
+    link_list[i] = xbt_dict_get_or_null(network_link_set, links[i]);
+    xbt_assert1(link_list[i],"Invalid link name \"%s\"",links[i]);
+    free(links[i]);
   }
-  xbt_free(links);  
+  free(links);
 }
 
-/*  
-   Semantic:  name       initial   bandwidth   initial   latency    initial     state
-                        bandwidth    trace     latency    trace      state      trace
-   
-   Token:   TOKEN_WORD TOKEN_WORD TOKEN_WORD TOKEN_WORD TOKEN_WORD TOKEN_WORD TOKEN_WORD
-   Type:     string       float      string    float      string     ON/OFF     string
-*/
 static void parse_network_link(void)
 {
-  e_surf_token_t token;
   char *name;
-  xbt_maxmin_float_t bw_initial;
+  double bw_initial;
   tmgr_trace_t bw_trace;
-  xbt_maxmin_float_t lat_initial;
+  double lat_initial;
   tmgr_trace_t lat_trace;
-  e_surf_network_link_state_t state_initial;
+  e_surf_network_link_state_t state_initial = SURF_NETWORK_LINK_ON;
+  e_surf_network_link_sharing_policy_t policy_initial = SURF_NETWORK_LINK_SHARED;
   tmgr_trace_t state_trace;
 
-  name = xbt_strdup(surf_parse_text);
-
-  surf_parse_float(&bw_initial);
-  surf_parse_trace(&bw_trace);
-  surf_parse_float(&lat_initial);
-  surf_parse_trace(&lat_trace);
+  name = xbt_strdup(A_surfxml_network_link_name);
+  surf_parse_get_double(&bw_initial,A_surfxml_network_link_bandwidth);
+  surf_parse_get_trace(&bw_trace, A_surfxml_network_link_bandwidth_file);
+  surf_parse_get_double(&lat_initial,A_surfxml_network_link_latency);
+  surf_parse_get_trace(&lat_trace, A_surfxml_network_link_latency_file);
 
-  token = surf_parse();		/* state_initial */
-  xbt_assert1((token == TOKEN_WORD), "Parse error line %d", line_pos);
-  if (strcmp(surf_parse_text, "ON") == 0)
+  xbt_assert0((A_surfxml_network_link_state==A_surfxml_network_link_state_ON)||
+	      (A_surfxml_network_link_state==A_surfxml_network_link_state_OFF),
+	      "Invalid state");
+  if (A_surfxml_network_link_state==A_surfxml_network_link_state_ON) 
     state_initial = SURF_NETWORK_LINK_ON;
-  else if (strcmp(surf_parse_text, "OFF") == 0)
+  else if (A_surfxml_network_link_state==A_surfxml_network_link_state_OFF) 
     state_initial = SURF_NETWORK_LINK_OFF;
-  else {
-    CRITICAL2("Invalid cpu state (line %d): %s neq ON or OFF\n", line_pos,
-	      surf_parse_text);
-    xbt_abort();
-  }
 
-  surf_parse_trace(&state_trace);
+  if (A_surfxml_network_link_sharing_policy==A_surfxml_network_link_sharing_policy_SHARED) 
+    policy_initial = SURF_NETWORK_LINK_SHARED;
+  else if (A_surfxml_network_link_sharing_policy==A_surfxml_network_link_sharing_policy_FATPIPE) 
+    policy_initial = SURF_NETWORK_LINK_FATPIPE;
 
-  network_link_new(name, bw_initial, bw_trace, 
-		   lat_initial, lat_trace,
-		   state_initial, state_trace);  
+  surf_parse_get_trace(&state_trace,A_surfxml_network_link_state_file);
+
+  network_link_new(name, bw_initial, bw_trace,
+		   lat_initial, lat_trace, state_initial, state_trace,
+		   policy_initial);
 }
 
-/*  
-   Semantic:  source   destination           network
-                                              links
-   
-   Token:   TOKEN_WORD TOKEN_WORD TOKEN_LP TOKEN_WORD* TOKEN_RP
-   Type:     string       string             string
-*/
-static void parse_route(int fake)
+static int nb_link = 0;
+static char **link_name = NULL;
+static int src_id = -1;
+static int dst_id = -1;
+
+static void parse_route_set_endpoints(void)
 {
-  int src_id = -1;
-  int dst_id = -1;
-  int nb_link = 0;
-  char **link_name = NULL;
-  e_surf_token_t token;
-
-  src_id = network_card_new(surf_parse_text);
-
-  token = surf_parse();
-  xbt_assert1((token == TOKEN_WORD), "Parse error line %d", line_pos);  
-  dst_id = network_card_new(surf_parse_text);
-
-  token = surf_parse();
-  xbt_assert1((token == TOKEN_LP), "Parse error line %d", line_pos);  
-  
-  while((token = surf_parse())==TOKEN_WORD) {
-    if(!fake) {
-      nb_link++;
-      link_name=xbt_realloc(link_name, (nb_link) * sizeof(char*));
-      link_name[(nb_link)-1]=xbt_strdup(surf_parse_text);
-    }
-  }
-  xbt_assert1((token == TOKEN_RP), "Parse error line %d", line_pos);  
+  src_id = network_card_new(A_surfxml_route_src);
+  dst_id = network_card_new(A_surfxml_route_dst);
+  nb_link = 0;
+  link_name = NULL;
+}
 
-  if(!fake) route_new(src_id,dst_id,link_name, nb_link);
+static void parse_route_elem(void)
+{
+  nb_link++;
+  link_name = xbt_realloc(link_name, (nb_link) * sizeof(char *));
+  link_name[(nb_link) - 1] = xbt_strdup(A_surfxml_route_element_name);
+}
+
+static void parse_route_set_route(void)
+{
+  route_new(src_id, dst_id, link_name, nb_link);
 }
 
 static void parse_file(const char *file)
 {
-  e_surf_token_t token;
-
-  /* Figuring out the network links in the system */
-  find_section(file, "NETWORK");
-  while (1) {
-    token = surf_parse();
-
-    if (token == TOKEN_END_SECTION)
-      break;
-    if (token == TOKEN_NEWLINE)
-      continue;
-
-    if (token == TOKEN_WORD)
-      parse_network_link();
-    else {
-      CRITICAL1("Parse error line %d\n", line_pos);
-      xbt_abort();
-    }
-  }
-  close_section("NETWORK");
+  int i;
+
+  /* Figuring out the network links */
+  surf_parse_reset_parser();
+  ETag_surfxml_network_link_fun=parse_network_link;
+  surf_parse_open(file);
+  xbt_assert1((!surf_parse()),"Parse error in %s",file);
+  surf_parse_close();
 
   /* Figuring out the network cards used */
-  find_section(file, "ROUTE");
-  while (1) {
-    token = surf_parse();
-
-    if (token == TOKEN_END_SECTION)
-      break;
-    if (token == TOKEN_NEWLINE)
-      continue;
-
-    if (token == TOKEN_WORD)
-      parse_route(1);
-    else {
-      CRITICAL1("Parse error line %d\n", line_pos);
-      xbt_abort();
-    }
-  }
-  close_section("ROUTE");
+  surf_parse_reset_parser();
+  STag_surfxml_route_fun=parse_route_set_endpoints;
+  surf_parse_open(file);
+  xbt_assert1((!surf_parse()),"Parse error in %s",file);
+  surf_parse_close();
 
   create_routing_table();
 
   /* Building the routes */
-  find_section(file, "ROUTE");
-  while (1) {
-    token = surf_parse();
-
-    if (token == TOKEN_END_SECTION)
-      break;
-    if (token == TOKEN_NEWLINE)
-      continue;
-
-    if (token == TOKEN_WORD)
-      parse_route(0);
-    else {
-      CRITICAL1("Parse error line %d\n", line_pos);
-      xbt_abort();
+  surf_parse_reset_parser();
+  STag_surfxml_route_fun=parse_route_set_endpoints;
+  ETag_surfxml_route_element_fun=parse_route_elem;
+  ETag_surfxml_route_fun=parse_route_set_route;
+  surf_parse_open(file);
+  xbt_assert1((!surf_parse()),"Parse error in %s",file);
+  surf_parse_close();
+
+  /* Adding loopback if needed */
+    
+  for (i = 0; i < card_number; i++) 
+    if(!ROUTE_SIZE(i,i)) {
+      if(!loopback)
+	loopback = network_link_new(xbt_strdup("__MSG_loopback__"), 
+				   498.00, NULL, 0.000015, NULL, 
+				   SURF_NETWORK_LINK_ON, NULL,
+				   SURF_NETWORK_LINK_FATPIPE);
+      ROUTE_SIZE(i,i)=1;
+      ROUTE(i,i) = xbt_new0(network_link_CM02_t, 1);
+      ROUTE(i,i)[0] = loopback;
     }
-  }
-  close_section("ROUTE");
 }
 
 static void *name_service(const char *name)
 {
-  network_card_t card = NULL;
-
-  xbt_dict_get(network_card_set, name, (void *) &card);
-
+  network_card_CM02_t card = xbt_dict_get_or_null(network_card_set, name);
   return card;
 }
 
 static const char *get_resource_name(void *resource_id)
 {
-  return ((network_card_t) resource_id)->name;
+  return ((network_card_CM02_t) resource_id)->name;
 }
 
 static int resource_used(void *resource_id)
 {
   return lmm_constraint_used(maxmin_system,
-			     ((network_link_t) resource_id)->constraint);
+			     ((network_link_CM02_t) resource_id)->constraint);
 }
 
-static void action_free(surf_action_t action)
+static int action_free(surf_action_t action)
 {
-  surf_action_network_t Action = (surf_action_network_t) action;
-
-  xbt_swag_remove(action, action->state_set);
-  lmm_variable_free(maxmin_system, Action->variable);
-  xbt_free(action);
+  action->using--;
+  if(!action->using) {
+    xbt_swag_remove(action, action->state_set);
+    if(((surf_action_network_CM02_t)action)->variable)
+      lmm_variable_free(maxmin_system, ((surf_action_network_CM02_t)action)->variable);
+    free(action);
+    return 1;
+  }
+  return 0;
+}
 
-  return;
+static void action_use(surf_action_t action)
+{
+  action->using++;
 }
 
 static void action_cancel(surf_action_t action)
@@ -287,75 +260,86 @@ static void action_recycle(surf_action_t action)
 static void action_change_state(surf_action_t action,
 				e_surf_action_state_t state)
 {
+/*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
+/*     if(((surf_action_network_CM02_t)action)->variable) { */
+/*       lmm_variable_disable(maxmin_system, ((surf_action_network_CM02_t)action)->variable); */
+/*       ((surf_action_network_CM02_t)action)->variable = NULL; */
+/*     } */
+
   surf_action_change_state(action, state);
   return;
 }
 
-static xbt_heap_float_t share_resources(xbt_heap_float_t now)
+static double share_resources(double now)
 {
-  surf_action_network_t action = NULL;
-  xbt_swag_t running_actions =
-      surf_network_resource->common_public->states.running_action_set;
-  xbt_maxmin_float_t min = -1;
-  xbt_maxmin_float_t value = -1;
-  lmm_solve(maxmin_system);
-
-  action = xbt_swag_getFirst(running_actions);
-  if (!action)
-    return -1.0;
-  value = lmm_variable_getvalue(action->variable);
-  min = action->generic_action.remains / value;
+  s_surf_action_network_CM02_t s_action;
+  surf_action_network_CM02_t action = NULL;
+  xbt_swag_t running_actions = surf_network_resource->common_public->states.running_action_set;
+  double min = generic_maxmin_share_resources(running_actions,
+					      xbt_swag_offset(s_action, variable));
 
   xbt_swag_foreach(action, running_actions) {
-    value = action->latency + (action->generic_action.remains /
-	lmm_variable_getvalue(action->variable));
-    if (value < min)
-      min = value;
+    if(action->latency>0) {
+      if(min<0) min = action->latency;
+      else if (action->latency<min) min = action->latency;
+    }
   }
 
   return min;
 }
 
-
-static void update_actions_state(xbt_heap_float_t now,
-				 xbt_heap_float_t delta)
+static void update_actions_state(double now, double delta)
 {
-  xbt_heap_float_t deltap = 0.0;
-  surf_action_network_t action = NULL;
-  surf_action_network_t next_action = NULL;
+  double deltap = 0.0;
+  surf_action_network_CM02_t action = NULL;
+  surf_action_network_CM02_t next_action = NULL;
   xbt_swag_t running_actions =
       surf_network_resource->common_public->states.running_action_set;
+  /*
   xbt_swag_t failed_actions =
       surf_network_resource->common_public->states.failed_action_set;
+  */
 
   xbt_swag_foreach_safe(action, next_action, running_actions) {
     deltap = delta;
-    if(action->latency>0) {
-      if(action->latency>deltap) {
-	action->latency-=deltap;
+    if (action->latency > 0) {
+      if (action->latency > deltap) {
+	surf_double_update(&(action->latency),deltap);
 	deltap = 0.0;
       } else {
-	deltap -= action->latency;
+	surf_double_update(&(deltap), action->latency);
 	action->latency = 0.0;
       }
+      if ((action->latency == 0.0) && !(action->suspended)) 
+	lmm_update_variable_weight(maxmin_system, action->variable, 
+				   action->lat_current);
     }
-    action->generic_action.remains -=
-      lmm_variable_getvalue(action->variable) * deltap;
+    surf_double_update(&(action->generic_action.remains),
+	lmm_variable_getvalue(action->variable) * deltap);
+    if (action->generic_action.max_duration != NO_MAX_DURATION)
+      surf_double_update(&(action->generic_action.max_duration), delta);
 
-/*     if(action->generic_action.remains<.00001) action->generic_action.remains=0; */
+    /*   if(action->generic_action.remains<.00001) action->generic_action.remains=0; */
 
-    if (action->generic_action.remains <= 0) {
+    if ((action->generic_action.remains <= 0) && 
+	(lmm_get_variable_weight(action->variable)>0)) {
+      action->generic_action.finish = surf_get_clock();
+      action_change_state((surf_action_t) action, SURF_ACTION_DONE);
+    } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
+	       (action->generic_action.max_duration <= 0)) {
+      action->generic_action.finish = surf_get_clock();
       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
     } else {			/* Need to check that none of the resource has failed */
       lmm_constraint_t cnst = NULL;
       int i = 0;
-      network_link_t nw_link = NULL;
+      network_link_CM02_t nw_link = NULL;
 
       while ((cnst =
 	      lmm_get_cnst_from_var(maxmin_system, action->variable,
 				    i++))) {
 	nw_link = lmm_constraint_id(cnst);
 	if (nw_link->state_current == SURF_NETWORK_LINK_OFF) {
+	  action->generic_action.finish = surf_get_clock();
 	  action_change_state((surf_action_t) action, SURF_ACTION_FAILED);
 	  break;
 	}
@@ -363,38 +347,40 @@ static void update_actions_state(xbt_heap_float_t now,
     }
   }
 
-  xbt_swag_foreach_safe(action, next_action, failed_actions) {
-    lmm_variable_disable(maxmin_system, action->variable);
-  }
-
   return;
 }
 
 static void update_resource_state(void *id,
 				  tmgr_trace_event_t event_type,
-				  xbt_maxmin_float_t value)
+				  double value)
 {
-  network_link_t nw_link = id;
-
-/*   printf("[" XBT_HEAP_FLOAT_T "] Asking to update network card \"%s\" with value " */
-/* 	 XBT_MAXMIN_FLOAT_T " for event %p\n", surf_get_clock(), nw_link->name, */
-/* 	 value, event_type); */
+  network_link_CM02_t nw_link = id;
+  /*   printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
+  /* 	 "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
+  /* 	 value, event_type); */
 
   if (event_type == nw_link->bw_event) {
     nw_link->bw_current = value;
     lmm_update_constraint_bound(maxmin_system, nw_link->constraint,
 				nw_link->bw_current);
   } else if (event_type == nw_link->lat_event) {
-    xbt_maxmin_float_t delta = value - nw_link->lat_current;
+    double delta = value - nw_link->lat_current;
     lmm_variable_t var = NULL;
-    surf_action_network_t action = NULL;
+    surf_action_network_CM02_t action = NULL;
 
     nw_link->lat_current = value;
-    while(lmm_get_var_from_cnst(maxmin_system, nw_link->constraint, &var)) {
-      action  = lmm_variable_id(var);
-      action->lat_current+=delta;
-      lmm_update_variable_bound(maxmin_system, var, 
-				1/(action->lat_current));
+    while (lmm_get_var_from_cnst(maxmin_system, nw_link->constraint, &var)) {
+      action = lmm_variable_id(var);
+      action->lat_current += delta;
+      if(action->rate<0)
+	lmm_update_variable_bound(maxmin_system, action->variable,
+				  SG_TCP_CTE_GAMMA / (2.0 * action->lat_current));
+      else 
+	lmm_update_variable_bound(maxmin_system, action->variable,
+				  min(action->rate,SG_TCP_CTE_GAMMA / (2.0 * action->lat_current)));
+      if(!(action->suspended))
+	lmm_update_variable_weight(maxmin_system, action->variable, 
+				   action->lat_current);
     }
   } else if (event_type == nw_link->state_event) {
     if (value > 0)
@@ -409,63 +395,130 @@ static void update_resource_state(void *id,
   return;
 }
 
-static surf_action_t communicate(void *src, void *dst,
-				 xbt_maxmin_float_t size)
+static surf_action_t communicate(void *src, void *dst, double size, double rate)
 {
-  surf_action_network_t action = NULL;
-  network_card_t card_src = src;
-  network_card_t card_dst = dst;
-  int route_size = ROUTE_SIZE(card_src->id,card_dst->id);
-  network_link_t *route = ROUTE(card_src->id,card_dst->id);
+  surf_action_network_CM02_t action = NULL;
+  network_card_CM02_t card_src = src;
+  network_card_CM02_t card_dst = dst;
+  int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
+  network_link_CM02_t *route = ROUTE(card_src->id, card_dst->id);
   int i;
 
-  action = xbt_new0(s_surf_action_network_t, 1);
+  XBT_IN4("(%s,%s,%g,%g)",card_src->name,card_dst->name,size,rate);
+  xbt_assert2(route_size,"You're trying to send data from %s to %s but there is no connexion between these two cards.", card_src->name, card_dst->name);
 
+  action = xbt_new0(s_surf_action_network_CM02_t, 1);
+
+  action->generic_action.using = 1;
   action->generic_action.cost = size;
   action->generic_action.remains = size;
+  action->generic_action.max_duration = NO_MAX_DURATION;
   action->generic_action.start = -1.0;
   action->generic_action.finish = -1.0;
-  action->generic_action.callback = NULL;
   action->generic_action.resource_type =
       (surf_resource_t) surf_network_resource;
-
+  action->suspended = 0;  /* Should be useless because of the 
+			     calloc but it seems to help valgrind... */
   action->generic_action.state_set =
-    surf_network_resource->common_public->states.running_action_set;
+      surf_network_resource->common_public->states.running_action_set;
 
   xbt_swag_insert(action, action->generic_action.state_set);
-
-  action->variable = lmm_variable_new(maxmin_system, action, 1.0, -1.0, 
-				      route_size);
-  for(i=0; i<route_size; i++)
-    lmm_expand(maxmin_system, route[i]->constraint, action->variable,
-	       1.0);
+  action->rate = rate;
 
   action->latency = 0.0;
-  for(i=0; i<route_size; i++)
+  for (i = 0; i < route_size; i++)
     action->latency += route[i]->lat_current;
   action->lat_current = action->latency;
-  lmm_update_variable_bound(maxmin_system, action->variable, 
-			    SG_TCP_CTE_GAMMA/action->lat_current);
+
+  if(action->latency>0)
+    action->variable = lmm_variable_new(maxmin_system, action, 0.0, -1.0,
+					route_size);
+  else 
+    action->variable = lmm_variable_new(maxmin_system, action, 1.0, -1.0,
+					route_size);
+
+  if(action->rate<0) {
+    if(action->lat_current>0)
+      lmm_update_variable_bound(maxmin_system, action->variable,
+				SG_TCP_CTE_GAMMA / (2.0 * action->lat_current));
+    else
+      lmm_update_variable_bound(maxmin_system, action->variable, -1.0);
+  } else {
+    if(action->lat_current>0)
+      lmm_update_variable_bound(maxmin_system, action->variable,
+				min(action->rate,SG_TCP_CTE_GAMMA / (2.0 * action->lat_current)));
+    else
+      lmm_update_variable_bound(maxmin_system, action->variable, action->rate);
+  }
+
+  for (i = 0; i < route_size; i++)
+    lmm_expand(maxmin_system, route[i]->constraint, action->variable, 1.0);
+  XBT_OUT;
 
   return (surf_action_t) action;
 }
 
+static void** get_route(void *src, void *dst) {
+  /* TODO */
+
+  return NULL;
+}
+
+static void action_suspend(surf_action_t action)
+{
+  ((surf_action_network_CM02_t) action)->suspended = 1;
+  lmm_update_variable_weight(maxmin_system,
+			     ((surf_action_network_CM02_t) action)->variable, 0.0);
+}
+
+static void action_resume(surf_action_t action)
+{
+  lmm_update_variable_weight(maxmin_system,
+			     ((surf_action_network_CM02_t) action)->variable, 
+			     ((surf_action_network_CM02_t) action)->lat_current);
+  ((surf_action_network_CM02_t) action)->suspended = 0;
+}
+
+static int action_is_suspended(surf_action_t action)
+{
+  return ((surf_action_network_CM02_t) action)->suspended;
+}
+
+static void action_set_max_duration(surf_action_t action, double duration)
+{
+  action->max_duration = duration;
+}
+
 static void finalize(void)
 {
+  int i,j;
+
   xbt_dict_free(&network_card_set);
   xbt_dict_free(&network_link_set);
-  xbt_swag_free(surf_network_resource->common_public->states.ready_action_set);
+  xbt_swag_free(surf_network_resource->common_public->states.
+		ready_action_set);
   xbt_swag_free(surf_network_resource->common_public->states.
 		running_action_set);
   xbt_swag_free(surf_network_resource->common_public->states.
 		failed_action_set);
-  xbt_swag_free(surf_network_resource->common_public->states.done_action_set);
-  xbt_free(surf_network_resource->common_public);
-  xbt_free(surf_network_resource->common_private);
-  xbt_free(surf_network_resource->extension_public);
+  xbt_swag_free(surf_network_resource->common_public->states.
+		done_action_set);
+  free(surf_network_resource->common_public);
+  free(surf_network_resource->common_private);
+  free(surf_network_resource->extension_public);
 
-  xbt_free(surf_network_resource);
+  free(surf_network_resource);
   surf_network_resource = NULL;
+
+  loopback = NULL;
+  for (i = 0; i < card_number; i++) 
+    for (j = 0; j < card_number; j++) 
+      free(ROUTE(i,j));
+  free(routing_table);
+  routing_table = NULL;
+  free(routing_table_size);
+  routing_table_size = NULL;
+  card_number = 0;
 }
 
 static void surf_network_resource_init_internal(void)
@@ -478,7 +531,6 @@ static void surf_network_resource_init_internal(void)
       xbt_new0(s_surf_resource_private_t, 1);
   surf_network_resource->common_public =
       xbt_new0(s_surf_resource_public_t, 1);
-/*   surf_network_resource->extension_private = xbt_new0(s_surf_network_resource_extension_private_t,1); */
   surf_network_resource->extension_public =
       xbt_new0(s_surf_network_resource_extension_public_t, 1);
 
@@ -497,10 +549,13 @@ static void surf_network_resource_init_internal(void)
   surf_network_resource->common_public->action_get_state =
       surf_action_get_state;
   surf_network_resource->common_public->action_free = action_free;
+  surf_network_resource->common_public->action_use = action_use;
   surf_network_resource->common_public->action_cancel = action_cancel;
   surf_network_resource->common_public->action_recycle = action_recycle;
   surf_network_resource->common_public->action_change_state =
       action_change_state;
+  surf_network_resource->common_public->action_set_data = surf_action_set_data;
+  surf_network_resource->common_public->name = "network";
 
   surf_network_resource->common_private->resource_used = resource_used;
   surf_network_resource->common_private->share_resources = share_resources;
@@ -510,7 +565,13 @@ static void surf_network_resource_init_internal(void)
       update_resource_state;
   surf_network_resource->common_private->finalize = finalize;
 
+  surf_network_resource->common_public->suspend = action_suspend;
+  surf_network_resource->common_public->resume = action_resume;
+  surf_network_resource->common_public->is_suspended = action_is_suspended;
+  surf_cpu_resource->common_public->set_max_duration = action_set_max_duration;
+
   surf_network_resource->extension_public->communicate = communicate;
+  surf_network_resource->extension_public->get_route = get_route;
 
   network_link_set = xbt_dict_new();
   network_card_set = xbt_dict_new();
@@ -518,8 +579,21 @@ static void surf_network_resource_init_internal(void)
   xbt_assert0(maxmin_system, "surf_init has to be called first!");
 }
 
-void surf_network_resource_init(const char *filename)
+/***************************************************************************/
+/* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
+/***************************************************************************/
+/* @TechReport{      rr-lip2002-40, */
+/*   author        = {Henri Casanova and Loris Marchal}, */
+/*   institution   = {LIP}, */
+/*   title         = {A Network Model for Simulation of Grid Application}, */
+/*   number        = {2002-40}, */
+/*   month         = {oct}, */
+/*   year          = {2002} */
+/* } */
+void surf_network_resource_init_CM02(const char *filename)
 {
+  if (surf_network_resource)
+    return;
   surf_network_resource_init_internal();
   parse_file(filename);
   xbt_dynar_push(resource_list, &surf_network_resource);