1 /* Copyright (c) 2009, 2010, 2011. The SimGrid Team.
2 * All rights reserved. */
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 #include "surf_routing_private.h"
7 #include <pcre.h> /* regular expression library */
10 extern routing_global_t global_routing;
11 extern xbt_dynar_t link_list;
13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_rulebased, surf, "Routing part of surf");
15 /* Routing model structure */
18 s_as_t generic_routing;
19 xbt_dict_t dict_processing_units;
20 xbt_dict_t dict_autonomous_systems;
21 xbt_dynar_t list_route;
22 xbt_dynar_t list_ASroute;
23 } s_routing_component_rulebased_t, *routing_component_rulebased_t;
25 typedef struct s_rule_route s_rule_route_t, *rule_route_t;
26 typedef struct s_rule_route_extended s_rule_route_extended_t,
27 *rule_route_extended_t;
30 xbt_dynar_t re_str_link; // dynar of char*
35 struct s_rule_route_extended {
36 s_rule_route_t generic_rule_route;
41 static void rule_route_free(void *e)
43 rule_route_t *elem = (rule_route_t *) (e);
45 xbt_dynar_free(&(*elem)->re_str_link);
46 pcre_free((*elem)->re_src);
47 pcre_free((*elem)->re_dst);
53 static void rule_route_extended_free(void *e)
55 rule_route_extended_t *elem = (rule_route_extended_t *) e;
57 xbt_dynar_free(&(*elem)->generic_rule_route.re_str_link);
58 pcre_free((*elem)->generic_rule_route.re_src);
59 pcre_free((*elem)->generic_rule_route.re_dst);
60 xbt_free((*elem)->re_src_gateway);
61 xbt_free((*elem)->re_dst_gateway);
66 /* Parse routing model functions */
68 static void model_rulebased_parse_PU(AS_t rc,
71 routing_component_rulebased_t routing =
72 (routing_component_rulebased_t) rc;
73 xbt_dict_set(routing->dict_processing_units, name, (void *) (-1), NULL);
76 static void model_rulebased_parse_AS(AS_t rc,
79 routing_component_rulebased_t routing =
80 (routing_component_rulebased_t) rc;
81 xbt_dict_set(routing->dict_autonomous_systems, name, (void *) (-1),
85 static void model_rulebased_parse_route(AS_t rc,
86 const char *src, const char *dst,
89 routing_component_rulebased_t routing =
90 (routing_component_rulebased_t) rc;
91 rule_route_t ruleroute = xbt_new0(s_rule_route_t, 1);
95 if(!strcmp(rc->model_desc->name,"Vivaldi")){
96 if(!xbt_dynar_is_empty(route->link_list))
97 xbt_die("You can't have link_ctn with Model Vivaldi.");
100 ruleroute->re_src = pcre_compile(src, 0, &error, &erroffset, NULL);
101 xbt_assert(ruleroute->re_src,
102 "PCRE compilation failed at offset %d (\"%s\"): %s\n",
103 erroffset, src, error);
104 ruleroute->re_dst = pcre_compile(dst, 0, &error, &erroffset, NULL);
105 xbt_assert(ruleroute->re_src,
106 "PCRE compilation failed at offset %d (\"%s\"): %s\n",
107 erroffset, dst, error);
108 ruleroute->re_str_link = route->link_list;
109 xbt_dynar_push(routing->list_route, &ruleroute);
113 static void model_rulebased_parse_ASroute(AS_t rc,
114 const char *src, const char *dst,
117 routing_component_rulebased_t routing =
118 (routing_component_rulebased_t) rc;
119 rule_route_extended_t ruleroute_e = xbt_new0(s_rule_route_extended_t, 1);
123 if(!strcmp(rc->model_desc->name,"Vivaldi")){
124 if(!xbt_dynar_is_empty(route->link_list))
125 xbt_die("You can't have link_ctn with Model Vivaldi.");
128 ruleroute_e->generic_rule_route.re_src =
129 pcre_compile(src, 0, &error, &erroffset, NULL);
130 xbt_assert(ruleroute_e->generic_rule_route.re_src,
131 "PCRE compilation failed at offset %d (\"%s\"): %s\n",
132 erroffset, src, error);
133 ruleroute_e->generic_rule_route.re_dst =
134 pcre_compile(dst, 0, &error, &erroffset, NULL);
135 xbt_assert(ruleroute_e->generic_rule_route.re_src,
136 "PCRE compilation failed at offset %d (\"%s\"): %s\n",
137 erroffset, dst, error);
138 ruleroute_e->generic_rule_route.re_str_link =
140 ruleroute_e->re_src_gateway = route->src_gateway;
141 ruleroute_e->re_dst_gateway = route->dst_gateway;
142 xbt_dynar_push(routing->list_ASroute, &ruleroute_e);
143 // xbt_free(route->src_gateway);
144 // xbt_free(route->dst_gateway);
148 static void model_rulebased_parse_bypassroute(AS_t rc,
153 xbt_die("bypass routing not supported for Route-Based model");
156 #define BUFFER_SIZE 4096 /* result buffer size */
157 #define OVECCOUNT 30 /* should be a multiple of 3 */
159 static char *remplace(char *value, const char **src_list, int src_size,
160 const char **dst_list, int dst_size)
162 char result[BUFFER_SIZE];
167 if (value[i] == '$') {
168 i++; /* skip the '$' */
169 if (value[i] < '0' || value[i] > '9')
170 xbt_die("bad string parameter, no number indication, at offset: "
171 "%d (\"%s\")", i, value);
173 /* solve the number */
174 int number = value[i++] - '0';
175 while (value[i] >= '0' && value[i] <= '9')
176 number = 10 * number + (value[i++] - '0');
178 /* solve the indication */
179 const char **param_list;
180 _XBT_GNUC_UNUSED int param_size;
181 if (value[i] == 's' && value[i + 1] == 'r' && value[i + 2] == 'c') {
182 param_list = src_list;
183 param_size = src_size;
184 } else if (value[i] == 'd' && value[i + 1] == 's'
185 && value[i + 2] == 't') {
186 param_list = dst_list;
187 param_size = dst_size;
189 xbt_die("bad string parameter, support only \"src\" and \"dst\", "
190 "at offset: %d (\"%s\")", i, value);
194 xbt_assert(number < param_size,
195 "bad string parameter, not enough length param_size, "
196 "at offset: %d (\"%s\") %d %d", i, value, param_size, number);
198 const char *param = param_list[number];
200 while (param[j] && i_res < BUFFER_SIZE)
201 result[i_res++] = param[j++];
203 result[i_res++] = value[i++]; /* next char */
205 if (i_res >= BUFFER_SIZE)
206 xbt_die("solving string \"%s\", small buffer size (%d)",
209 result[i_res++] = '\0';
210 char *res = xbt_malloc(i_res);
211 return memcpy(res, result, i_res);
214 static route_t rulebased_get_route(AS_t rc,
217 static xbt_dynar_t rulebased_get_onelink_routes(AS_t rc)
219 xbt_dynar_t ret = xbt_dynar_new (sizeof(onelink_t), xbt_free);
221 //We have already bypass cluster routes with network NS3
222 if(!strcmp(surf_network_model->name,"network NS3"))
225 routing_component_rulebased_t routing = (routing_component_rulebased_t)rc;
227 xbt_dict_cursor_t c1 = NULL;
232 xbt_dict_foreach(routing->dict_processing_units, c1, k1, d1) {
233 if (routing_get_network_element_type(k1) == SURF_NETWORK_ELEMENT_ROUTER){
239 xbt_die ("rulebased_get_onelink_routes works only if the AS is a cluster, sorry.");
242 xbt_dict_foreach(routing->dict_processing_units, c1, k1, d1) {
243 route_t route = rulebased_get_route (rc, router, k1);
245 int number_of_links = xbt_dynar_length(route->link_list);
247 if(number_of_links == 1) {
251 if (number_of_links != 2) {
252 xbt_die ("rulebased_get_onelink_routes works only if the AS is a cluster, sorry.");
256 xbt_dynar_get_cpy (route->link_list, 1, &link_ptr);
257 onelink_t onelink = xbt_new0 (s_onelink_t, 1);
258 onelink->src = xbt_strdup (k1);
259 onelink->dst = xbt_strdup (router);
260 onelink->link_ptr = link_ptr;
261 xbt_dynar_push (ret, &onelink);
267 /* Business methods */
268 static route_t rulebased_get_route(AS_t rc,
274 "Invalid params for \"get_route\" function at AS \"%s\"",
278 routing_component_rulebased_t routing =
279 (routing_component_rulebased_t) rc;
281 int are_processing_units=0;
282 xbt_dynar_t rule_list;
283 if (xbt_dict_get_or_null(routing->dict_processing_units, src)
284 && xbt_dict_get_or_null(routing->dict_processing_units, dst)) {
285 are_processing_units = 1;
286 rule_list = routing->list_route;
287 } else if (xbt_dict_get_or_null(routing->dict_autonomous_systems, src)
288 && xbt_dict_get_or_null(routing->dict_autonomous_systems,
290 are_processing_units = 0;
291 rule_list = routing->list_ASroute;
293 xbt_die("Ask for route \"from\"(%s) or \"to\"(%s) no found in "
294 "the local table", src, dst);
298 int src_length = (int) strlen(src);
299 int dst_length = (int) strlen(dst);
301 xbt_dynar_t links_list =
302 xbt_dynar_new(global_routing->size_of_link, NULL);
304 rule_route_t ruleroute;
306 int ovector_src[OVECCOUNT];
307 int ovector_dst[OVECCOUNT];
308 const char **list_src = NULL;
309 const char **list_dst = NULL;
310 _XBT_GNUC_UNUSED int res;
311 xbt_dynar_foreach(rule_list, cpt, ruleroute) {
313 pcre_exec(ruleroute->re_src, NULL, src, src_length, 0, 0,
314 ovector_src, OVECCOUNT);
317 pcre_exec(ruleroute->re_dst, NULL, dst, dst_length, 0, 0,
318 ovector_dst, OVECCOUNT);
320 res = pcre_get_substring_list(src, ovector_src, rc_src, &list_src);
321 xbt_assert(!res, "error solving substring list for src \"%s\"", src);
322 res = pcre_get_substring_list(dst, ovector_dst, rc_dst, &list_dst);
323 xbt_assert(!res, "error solving substring list for src \"%s\"", dst);
325 xbt_dynar_foreach(ruleroute->re_str_link, cpt, link_name) {
326 char *new_link_name =
327 remplace(link_name, list_src, rc_src, list_dst, rc_dst);
329 xbt_lib_get_or_null(link_lib, new_link_name, SURF_LINK_LEVEL);
331 xbt_dynar_push(links_list, &link);
333 THROWF(mismatch_error, 0, "Link %s not found", new_link_name);
334 xbt_free(new_link_name);
338 if (rc_src >= 0 && rc_dst >= 0)
342 route_t new_e_route = NULL;
343 if (rc_src >= 0 && rc_dst >= 0) {
344 new_e_route = xbt_new0(s_route_t, 1);
345 new_e_route->link_list = links_list;
346 } else if (!strcmp(src, dst) && are_processing_units) {
347 new_e_route = xbt_new0(s_route_t, 1);
348 xbt_dynar_push(links_list, &(global_routing->loopback));
349 new_e_route->link_list = links_list;
351 xbt_dynar_free(&link_list);
354 if (!are_processing_units && new_e_route) {
355 rule_route_extended_t ruleroute_extended =
356 (rule_route_extended_t) ruleroute;
357 new_e_route->src_gateway =
358 remplace(ruleroute_extended->re_src_gateway, list_src, rc_src,
360 new_e_route->dst_gateway =
361 remplace(ruleroute_extended->re_dst_gateway, list_src, rc_src,
366 pcre_free_substring_list(list_src);
368 pcre_free_substring_list(list_dst);
373 static route_t rulebased_get_bypass_route(AS_t rc, const char *src, const char *dst) {
377 static void rulebased_finalize(AS_t rc)
379 routing_component_rulebased_t routing =
380 (routing_component_rulebased_t) rc;
382 xbt_dict_free(&routing->dict_processing_units);
383 xbt_dict_free(&routing->dict_autonomous_systems);
384 xbt_dynar_free(&routing->list_route);
385 xbt_dynar_free(&routing->list_ASroute);
386 /* Delete structure */
391 /* Creation routing model functions */
392 AS_t model_rulebased_create(void) {
394 routing_component_rulebased_t new_component = (routing_component_rulebased_t)
395 model_generic_create_sized(sizeof(s_routing_component_rulebased_t));
397 new_component->generic_routing.parse_PU = model_rulebased_parse_PU;
398 new_component->generic_routing.parse_AS = model_rulebased_parse_AS;
399 new_component->generic_routing.parse_route = model_rulebased_parse_route;
400 new_component->generic_routing.parse_ASroute = model_rulebased_parse_ASroute;
401 new_component->generic_routing.parse_bypassroute = model_rulebased_parse_bypassroute;
402 new_component->generic_routing.get_onelink_routes = rulebased_get_onelink_routes;
403 new_component->generic_routing.get_route = rulebased_get_route;
404 new_component->generic_routing.get_bypass_route = rulebased_get_bypass_route;
405 new_component->generic_routing.finalize = rulebased_finalize;
406 /* initialization of internal structures */
407 new_component->dict_processing_units = xbt_dict_new();
408 new_component->dict_autonomous_systems = xbt_dict_new();
409 new_component->list_route = xbt_dynar_new(sizeof(rule_route_t), &rule_route_free);
410 new_component->list_ASroute =
411 xbt_dynar_new(sizeof(rule_route_extended_t),
412 &rule_route_extended_free);
414 return (AS_t) new_component;