* under the terms of the license (GNU LGPL) which comes with this package. */
#include "surf_private.h"
+#include "surf/maxmin.h"
#include "surf/ns3/ns3_interface.h"
#include "xbt/lib.h"
+#include "surf/network_ns3_private.h"
+#include "xbt/str.h"
extern xbt_lib_t host_lib;
extern xbt_lib_t link_lib;
"Logging specific to the SURF network NS3 module");
extern routing_global_t global_routing;
+extern xbt_dict_t dict_socket;
+
+static double time_to_next_flow_completion = -1;
+
+static double ns3_share_resources(double min);
+static void ns3_update_actions_state(double now, double delta);
+static void finalize(void);
+static surf_action_t ns3_communicate(const char *src_name,
+ const char *dst_name, double size, double rate);
+static void action_suspend(surf_action_t action);
+static void action_resume(surf_action_t action);
+static int action_is_suspended(surf_action_t action);
+static int action_unref(surf_action_t action);
+
+xbt_dynar_t IPV4addr;
+
+static void replace_str(char *str, const char *orig, const char *rep)
+{
+ char buffer[30];
+ char *p;
+
+ if(!(p = strstr(str, orig))) // Is 'orig' even in 'str'?
+ return;
+
+ strncpy(buffer, str, p-str); // Copy characters from 'str' start to 'orig' st$
+ buffer[p-str] = '\0';
+
+ sprintf(buffer+(p-str), "%s%s", rep, p+strlen(orig));
+ xbt_free(str);
+ str = xbt_strdup(buffer);
+}
+
+static void replace_bdw_ns3(char ** bdw)
+{
+ char *temp = xbt_strdup(*bdw);
+ xbt_free(*bdw);
+ *bdw = bprintf("%fBps",atof(temp));
+ xbt_free(temp);
+
+}
+
+static void replace_lat_ns3(char ** lat)
+{
+ char *temp = xbt_strdup(*lat);
+ xbt_free(*lat);
+ *lat = bprintf("%fs",atof(temp));
+ xbt_free(temp);
+}
void parse_ns3_add_host(void)
{
ns3_add_host(A_surfxml_host_id)
);
}
+
+static void ns3_free_dynar(void * elmts){
+ if(elmts)
+ free(elmts);
+ return;
+}
+
void parse_ns3_add_link(void)
{
XBT_DEBUG("NS3_ADD_LINK '%s'",A_surfxml_link_id);
- xbt_lib_set(link_lib,
- A_surfxml_link_id,
- NS3_LINK_LEVEL,
- ns3_add_link(A_surfxml_link_id)
- );
+
+ if(!IPV4addr) IPV4addr = xbt_dynar_new(sizeof(char*),ns3_free_dynar);
+
+ tmgr_trace_t bw_trace;
+ tmgr_trace_t state_trace;
+ tmgr_trace_t lat_trace;
+
+ bw_trace = tmgr_trace_new(A_surfxml_link_bandwidth_file);
+ lat_trace = tmgr_trace_new(A_surfxml_link_latency_file);
+ state_trace = tmgr_trace_new(A_surfxml_link_state_file);
+
+ if (bw_trace)
+ XBT_INFO("The NS3 network model doesn't support bandwidth state traces");
+ if (lat_trace)
+ XBT_INFO("The NS3 network model doesn't support latency state traces");
+ if (state_trace)
+ XBT_INFO("The NS3 network model doesn't support link state traces");
+
+ ns3_link_t link_ns3 = xbt_new0(s_ns3_link_t,1);;
+ link_ns3->id = xbt_strdup(A_surfxml_link_id);
+ link_ns3->bdw = xbt_strdup(A_surfxml_link_bandwidth);
+ link_ns3->lat = xbt_strdup(A_surfxml_link_latency);
+
+ surf_ns3_link_t link = xbt_new0(s_surf_ns3_link_t,1);
+ link->generic_resource.name = xbt_strdup(A_surfxml_link_id);
+ link->generic_resource.properties = current_property_set;
+ link->data = link_ns3;
+ link->created = 1;
+
+ xbt_lib_set(link_lib,A_surfxml_link_id,NS3_LINK_LEVEL,link_ns3);
+ xbt_lib_set(link_lib,A_surfxml_link_id,SURF_LINK_LEVEL,link);
}
void parse_ns3_add_router(void)
{
ns3_add_AS(A_surfxml_AS_id)
);
}
-void parse_ns3_add_route(void)
+void parse_ns3_add_cluster(void)
{
- XBT_DEBUG("NS3_ADD_ROUTE from '%s' to '%s'",A_surfxml_route_src,A_surfxml_route_dst);
- ns3_add_route(A_surfxml_route_src,A_surfxml_route_dst);
+ char *cluster_prefix = A_surfxml_cluster_prefix;
+ char *cluster_suffix = A_surfxml_cluster_suffix;
+ char *cluster_radical = A_surfxml_cluster_radical;
+ char *cluster_bb_bw = A_surfxml_cluster_bb_bw;
+ char *cluster_bb_lat = A_surfxml_cluster_bb_lat;
+ char *cluster_bw = A_surfxml_cluster_bw;
+ char *cluster_lat = A_surfxml_cluster_lat;
+ char *groups = NULL;
+
+ int start, end, i;
+ unsigned int iter;
+
+ xbt_dynar_t radical_elements;
+ xbt_dynar_t radical_ends;
+ xbt_dynar_t tab_elements_num = xbt_dynar_new(sizeof(int), NULL);
+
+ char *router_id,*host_id;
+
+ radical_elements = xbt_str_split(cluster_radical, ",");
+ xbt_dynar_foreach(radical_elements, iter, groups) {
+ radical_ends = xbt_str_split(groups, "-");
+
+ switch (xbt_dynar_length(radical_ends)) {
+ case 1:
+ surf_parse_get_int(&start,xbt_dynar_get_as(radical_ends, 0, char *));
+ xbt_dynar_push_as(tab_elements_num, int, start);
+ router_id = bprintf("ns3_%s%d%s", cluster_prefix, start, cluster_suffix);
+ xbt_lib_set(host_lib,
+ router_id,
+ NS3_HOST_LEVEL,
+ ns3_add_host_cluster(router_id)
+ );
+ XBT_DEBUG("NS3_ADD_ROUTER '%s'",router_id);
+ free(router_id);
+ break;
+
+ case 2:
+ surf_parse_get_int(&start,xbt_dynar_get_as(radical_ends, 0, char *));
+ surf_parse_get_int(&end, xbt_dynar_get_as(radical_ends, 1, char *));
+ for (i = start; i <= end; i++){
+ xbt_dynar_push_as(tab_elements_num, int, i);
+ router_id = bprintf("ns3_%s%d%s", cluster_prefix, i, cluster_suffix);
+ xbt_lib_set(host_lib,
+ router_id,
+ NS3_HOST_LEVEL,
+ ns3_add_host_cluster(router_id)
+ );
+ XBT_DEBUG("NS3_ADD_ROUTER '%s'",router_id);
+ free(router_id);
+ }
+ break;
+
+ default:
+ XBT_DEBUG("Malformed radical");
+ }
+ }
+
+ //Create links
+ unsigned int cpt;
+ int elmts;
+ char * lat = xbt_strdup(cluster_lat);
+ char * bw = xbt_strdup(cluster_bw);
+ replace_lat_ns3(&lat);
+ replace_bdw_ns3(&bw);
+
+ xbt_dynar_foreach(tab_elements_num,cpt,elmts)
+ {
+ host_id = bprintf("%s%d%s", cluster_prefix, elmts, cluster_suffix);
+ router_id = bprintf("ns3_%s%d%s", cluster_prefix, elmts, cluster_suffix);
+ XBT_DEBUG("Create link from '%s' to '%s'",host_id,router_id);
+
+ ns3_nodes_t host_src = xbt_lib_get_or_null(host_lib,host_id, NS3_HOST_LEVEL);
+ ns3_nodes_t host_dst = xbt_lib_get_or_null(host_lib,router_id,NS3_HOST_LEVEL);
+
+ if(host_src && host_dst){}
+ else xbt_die("\tns3_add_link from %d to %d",host_src->node_num,host_dst->node_num);
+
+ ns3_add_link(host_src->node_num,host_dst->node_num,bw,lat);
+
+ free(router_id);
+ free(host_id);
+ }
+ xbt_dynar_free(&tab_elements_num);
+
+
+ //Create link backbone
+ lat = xbt_strdup(cluster_bb_lat);
+ bw = xbt_strdup(cluster_bb_bw);
+ replace_lat_ns3(&lat);
+ replace_bdw_ns3(&bw);
+ ns3_add_cluster(bw,lat,A_surfxml_cluster_id);
+ xbt_free(lat);
+ xbt_free(bw);
}
-void parse_ns3_add_ASroute(void)
+
+double ns3_get_link_latency (const void *link)
{
- XBT_DEBUG("NS3_ADD_ASROUTE from '%s' to '%s'",A_surfxml_ASroute_src,A_surfxml_ASroute_dst);
- ns3_add_ASroute(A_surfxml_ASroute_src,A_surfxml_ASroute_dst);
+ double lat;
+ //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);
+ sscanf(((surf_ns3_link_t)link)->data->lat,"%lg",&lat);
+ return lat;
}
-void parse_ns3_add_cluster(void)
+double ns3_get_link_bandwidth (const void *link)
{
- XBT_DEBUG("NS3_ADD_CLUSTER '%s'",A_surfxml_cluster_id);
- routing_parse_Scluster();
+ double bdw;
+ //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);
+ sscanf(((surf_ns3_link_t)link)->data->bdw,"%lg",&bdw);
+ return bdw;
+}
+
+static xbt_dynar_t ns3_get_route(const char *src, const char *dst)
+{
+ return global_routing->get_route(src, dst);
}
void parse_ns3_end_platform(void)
{
- xbt_lib_cursor_t cursor = NULL;
- char *name = NULL;
- void **data = NULL;
- XBT_INFO("link_lib");
- xbt_lib_foreach(link_lib, cursor, name, data) {
- XBT_INFO("\tSee link '%s'\t--> NS3_LEVEL %p",
- name,
- data[NS3_LINK_LEVEL]);
- }
- XBT_INFO(" ");
- XBT_INFO("host_lib");
- xbt_lib_foreach(host_lib, cursor, name, data) {
- XBT_INFO("\tSee host '%s'\t--> NS3_LEVEL %p",
- name,
- data[NS3_HOST_LEVEL]);
- }
- XBT_INFO(" ");
- XBT_INFO("as_router_lib");
- xbt_lib_foreach(as_router_lib, cursor, name, data) {
- XBT_INFO("\tSee ASR '%s'\t--> NS3_LEVEL %p",
- name,
- data[NS3_ASR_LEVEL]);
- }
+ ns3_end_platform();
+}
+
+/* Create the ns3 topology based on routing strategy */
+void create_ns3_topology()
+{
+ XBT_DEBUG("Starting topology generation");
+
+ xbt_dynar_shrink(IPV4addr,0);
+
+ //get the onelinks from the parsed platform
+ xbt_dynar_t onelink_routes = global_routing->get_onelink_routes();
+ if (!onelink_routes)
+ xbt_die("There is no routes!");
+ XBT_DEBUG("Have get_onelink_routes, found %ld routes",onelink_routes->used);
+ //save them in trace file
+ onelink_t onelink;
+ unsigned int iter;
+ xbt_dynar_foreach(onelink_routes, iter, onelink) {
+ char *src = onelink->src;
+ char *dst = onelink->dst;
+ void *link = onelink->link_ptr;
+
+ if( strcmp(src,dst) && ((surf_ns3_link_t)link)->created){
+ XBT_DEBUG("Route from '%s' to '%s' with link '%s'",src,dst,((surf_ns3_link_t)link)->data->id);
+ char * link_bdw = bprintf("%s",((surf_ns3_link_t)link)->data->bdw);
+ char * link_lat = bprintf("%s",(((surf_ns3_link_t)link)->data->lat));
+ replace_lat_ns3(&link_lat);
+ replace_bdw_ns3(&link_bdw);
+ ((surf_ns3_link_t)link)->created = 0;
+
+ // XBT_DEBUG("src (%s), dst (%s), src_id = %d, dst_id = %d",src,dst, src_id, dst_id);
+ XBT_DEBUG("\tLink (%s) bdw:%s lat:%s",((surf_ns3_link_t)link)->data->id,
+ link_bdw,
+ link_lat
+ );
+
+ //create link ns3
+ ns3_nodes_t host_src = xbt_lib_get_or_null(host_lib,src,NS3_HOST_LEVEL);
+ if(!host_src) host_src = xbt_lib_get_or_null(as_router_lib,src,NS3_ASR_LEVEL);
+ ns3_nodes_t host_dst = xbt_lib_get_or_null(host_lib,dst,NS3_HOST_LEVEL);
+ if(!host_dst) host_dst = xbt_lib_get_or_null(as_router_lib,dst,NS3_ASR_LEVEL);
+
+ if(host_src && host_dst){}
+ else xbt_die("\tns3_add_link from %d to %d",host_src->node_num,host_dst->node_num);
+
+ ns3_add_link(host_src->node_num,host_dst->node_num,link_bdw,link_lat);
+
+ xbt_free(link_bdw);
+ xbt_free(link_lat);
+ }
+ }
}
static void define_callbacks_ns3(const char *filename)
{
- surfxml_add_callback(STag_surfxml_host_cb_list, &parse_ns3_add_host); //HOST
- surfxml_add_callback(STag_surfxml_router_cb_list, &parse_ns3_add_router); //ROUTER
- surfxml_add_callback(STag_surfxml_link_cb_list, &parse_ns3_add_link); //LINK
- surfxml_add_callback(STag_surfxml_AS_cb_list, &parse_ns3_add_AS); //AS
- surfxml_add_callback(STag_surfxml_route_cb_list, &parse_ns3_add_route); //ROUTE
- surfxml_add_callback(STag_surfxml_ASroute_cb_list, &parse_ns3_add_ASroute); //ASROUTE
+ surfxml_add_callback(STag_surfxml_host_cb_list, &parse_ns3_add_host); //HOST
+ surfxml_add_callback(STag_surfxml_router_cb_list, &parse_ns3_add_router); //ROUTER
+ surfxml_add_callback(STag_surfxml_link_cb_list, &parse_ns3_add_link); //LINK
+ surfxml_add_callback(STag_surfxml_AS_cb_list, &parse_ns3_add_AS); //AS
surfxml_add_callback(STag_surfxml_cluster_cb_list, &parse_ns3_add_cluster); //CLUSTER
- surfxml_add_callback(ETag_surfxml_platform_cb_list, &parse_ns3_end_platform); //DEBUG
+ surfxml_add_callback(ETag_surfxml_platform_cb_list, &create_ns3_topology); //get_one_link_routes
+ surfxml_add_callback(ETag_surfxml_platform_cb_list, &parse_ns3_end_platform); //InitializeRoutes
+}
+
+static void free_ns3_elmts(void * elmts)
+{
}
+static void free_ns3_link(void * elmts)
+{
+ ns3_link_t link = elmts;
+ free(link->id);
+ free(link->bdw);
+ free(link->lat);
+ free(link);
+}
+
+static void free_ns3_host(void * elmts)
+{
+ ns3_nodes_t host = elmts;
+ free(host);
+}
+
+#ifdef HAVE_LATENCY_BOUND_TRACKING
+static int ns3_get_link_latency_limited(surf_action_t action)
+{
+ return 0;
+}
+#endif
+
+#ifdef HAVE_TRACING
+static void ns3_action_set_category(surf_action_t action, const char *category)
+{
+ action->category = xbt_strdup (category);
+}
+#endif
+
void surf_network_model_init_NS3(const char *filename)
{
- define_callbacks_ns3(filename);
+ if (surf_network_model)
+ return;
+
surf_network_model = surf_model_init();
surf_network_model->name = "network NS3";
+ surf_network_model->extension.network.get_link_latency = ns3_get_link_latency;
+ surf_network_model->extension.network.get_link_bandwidth = ns3_get_link_bandwidth;
+ surf_network_model->extension.network.get_route = ns3_get_route;
+
+ surf_network_model->model_private->share_resources = ns3_share_resources;
+ surf_network_model->model_private->update_actions_state = ns3_update_actions_state;
+ surf_network_model->model_private->finalize = finalize;
+
+ surf_network_model->suspend = action_suspend;
+ surf_network_model->resume = action_resume;
+ surf_network_model->is_suspended = action_is_suspended;
+ surf_network_model->action_unref = action_unref;
+ surf_network_model->extension.network.communicate = ns3_communicate;
- NS3_HOST_LEVEL = xbt_lib_add_level(host_lib,(void_f_pvoid_t)free_ns3_elmts);
- NS3_ASR_LEVEL = xbt_lib_add_level(as_router_lib,(void_f_pvoid_t)free_ns3_elmts);
- NS3_LINK_LEVEL = xbt_lib_add_level(link_lib,(void_f_pvoid_t)free_ns3_elmts);
+#ifdef HAVE_TRACING
+ surf_network_model->set_category = ns3_action_set_category;
+#endif
+ /* Added the initialization for NS3 interface */
+
+ if (ns3_initialize(xbt_cfg_get_string(_surf_cfg_set,"ns3/TcpModel"))) {
+ xbt_die("Impossible to initialize NS3 interface");
+ }
+
+ routing_model_create(sizeof(s_surf_ns3_link_t), NULL, NULL);
+ define_callbacks_ns3(filename);
+
+ NS3_HOST_LEVEL = xbt_lib_add_level(host_lib,(void_f_pvoid_t)free_ns3_host);
+ NS3_ASR_LEVEL = xbt_lib_add_level(as_router_lib,(void_f_pvoid_t)free_ns3_host);
+ NS3_LINK_LEVEL = xbt_lib_add_level(link_lib,(void_f_pvoid_t)free_ns3_link);
+
+ xbt_dynar_push(model_list, &surf_network_model);
update_model_description(surf_network_model_description,
"NS3", surf_network_model);
+
+#ifdef HAVE_LATENCY_BOUND_TRACKING
+ surf_network_model->get_latency_limited = ns3_get_link_latency_limited;
+#endif
+}
+
+static void finalize(void)
+{
+ ns3_finalize();
+ xbt_dynar_free_container(&IPV4addr);
+}
+
+static double ns3_share_resources(double min)
+{
+ XBT_DEBUG("ns3_share_resources");
+
+ xbt_swag_t running_actions =
+ surf_network_model->states.running_action_set;
+
+ //get the first relevant value from the running_actions list
+ if (!xbt_swag_size(running_actions) || min == 0.0)
+ return -1.0;
+ else
+ do {
+ ns3_simulator(min);
+ time_to_next_flow_completion = ns3_time() - surf_get_clock();
+ } while(double_equals(time_to_next_flow_completion,0));
+
+ XBT_DEBUG("min : %f",min);
+ XBT_DEBUG("ns3 time : %f",ns3_time());
+ XBT_DEBUG("surf time : %f",surf_get_clock());
+ XBT_DEBUG("Next completion %f :",time_to_next_flow_completion);
+
+ return time_to_next_flow_completion;
+}
+
+static void ns3_update_actions_state(double now, double delta)
+{
+ xbt_dict_cursor_t cursor = NULL;
+ char *key;
+ void *data;
+
+ surf_action_network_ns3_t action = NULL;
+ xbt_swag_t running_actions =
+ surf_network_model->states.running_action_set;
+
+ /* If there are no running flows, just return */
+ if (!xbt_swag_size(running_actions)) {
+ while(double_positive(now-ns3_time())) {
+ ns3_simulator(now-ns3_time());
+ }
+ return;
+ }
+
+ xbt_dict_foreach(dict_socket,cursor,key,data){
+ action = (surf_action_network_ns3_t)ns3_get_socket_action(data);
+ action->generic_action.remains = action->generic_action.cost - ns3_get_socket_sent(data);
+
+#ifdef HAVE_TRACING
+ if (TRACE_is_enabled() &&
+ surf_action_state_get(&(action->generic_action)) == SURF_ACTION_RUNNING){
+ double data_sent = ns3_get_socket_sent(data);
+ double data_delta_sent = data_sent - action->last_sent;
+
+ xbt_dynar_t route = global_routing->get_route(action->src_name, action->dst_name);
+ unsigned int i;
+ for (i = 0; i < xbt_dynar_length (route); i++){
+ surf_ns3_link_t *link = ((surf_ns3_link_t*)xbt_dynar_get_ptr (route, i));
+ TRACE_surf_link_set_utilization ((*link)->generic_resource.name,
+ action->generic_action.data,
+ (surf_action_t) action,
+ (data_delta_sent)/delta,
+ now-delta,
+ delta);
+ }
+ action->last_sent = data_sent;
+ }
+#endif
+
+ if(ns3_get_socket_is_finished(data) == 1){
+ action->generic_action.finish = now;
+ surf_action_state_set(&(action->generic_action), SURF_ACTION_DONE);
+ }
+ }
+ return;
+}
+
+/* Max durations are not supported */
+static surf_action_t ns3_communicate(const char *src_name,
+ const char *dst_name, double size, double rate)
+{
+ surf_action_network_ns3_t action = NULL;
+
+ XBT_DEBUG("Communicate from %s to %s",src_name,dst_name);
+ action = surf_action_new(sizeof(s_surf_action_network_ns3_t), size, surf_network_model, 0);
+
+ ns3_create_flow(src_name, dst_name, surf_get_clock(), size, action);
+
+#ifdef HAVE_TRACING
+ action->last_sent = 0;
+ action->src_name = xbt_strdup (src_name);
+ action->dst_name = xbt_strdup (dst_name);
+#endif
+
+ return (surf_action_t) action;
+}
+
+/* Suspend a flow() */
+static void action_suspend(surf_action_t action)
+{
+ THROW_UNIMPLEMENTED;
+}
+
+/* Resume a flow() */
+static void action_resume(surf_action_t action)
+{
+ THROW_UNIMPLEMENTED;
+}
+
+/* Test whether a flow is suspended */
+static int action_is_suspended(surf_action_t action)
+{
+ return 0;
+}
+
+static int action_unref(surf_action_t action)
+{
+ action->refcount--;
+ if (!action->refcount) {
+ xbt_swag_remove(action, action->state_set);
+
+#ifdef HAVE_TRACING
+ xbt_free(((surf_action_network_ns3_t)action)->src_name);
+ xbt_free(((surf_action_network_ns3_t)action)->dst_name);
+ if (action->category)
+ xbt_free(action->category);
+#endif
+
+ surf_action_free(&action);
+ return 1;
+ }
+ return 0;
}
