examples/qos_sched/cfg_file.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
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   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <string.h>
  37 #include <ctype.h>
  38 #include <rte_string_fns.h>
  39 #include <rte_sched.h>
  40
  41 #include "cfg_file.h"
  42 #include "main.h"
  43
  44
  45 /** when we resize a file structure, how many extra entries
  46  * for new sections do we add in */
  47 #define CFG_ALLOC_SECTION_BATCH 8
  48 /** when we resize a section structure, how many extra entries
  49  * for new entries do we add in */
  50 #define CFG_ALLOC_ENTRY_BATCH 16
  51
  52 static unsigned
  53 _strip(char *str, unsigned len)
  54 {
  55         int newlen = len;
  56         if (len == 0)
  57                 return 0;
  58
  59         if (isspace(str[len-1])) {
  60                 /* strip trailing whitespace */
  61                 while (newlen > 0 && isspace(str[newlen - 1]))
  62                         str[--newlen] = '\0';
  63         }
  64
  65         if (isspace(str[0])) {
  66                 /* strip leading whitespace */
  67                 int i,start = 1;
  68                 while (isspace(str[start]) && start < newlen)
  69                         start++
  70                         ; /* do nothing */
  71                 newlen -= start;
  72                 for (i = 0; i < newlen; i++)
  73                         str[i] = str[i+start];
  74                 str[i] = '\0';
  75         }
  76         return newlen;
  77 }
  78
  79 struct cfg_file *
  80 cfg_load(const char *filename, int flags)
  81 {
  82         int allocated_sections = CFG_ALLOC_SECTION_BATCH;
  83         int allocated_entries = 0;
  84         int curr_section = -1;
  85         int curr_entry = -1;
  86         char buffer[256];
  87         int lineno = 0;
  88         struct cfg_file *cfg = NULL;
  89
  90         FILE *f = fopen(filename, "r");
  91         if (f == NULL)
  92                 return NULL;
  93
  94         cfg = malloc(sizeof(*cfg) +     sizeof(cfg->sections[0]) * allocated_sections);
  95         if (cfg == NULL)
  96                 goto error2;
  97
  98         memset(cfg->sections, 0, sizeof(cfg->sections[0]) * allocated_sections);
  99
 100         while (fgets(buffer, sizeof(buffer), f) != NULL) {
 101                 char *pos = NULL;
 102                 size_t len = strnlen(buffer, sizeof(buffer));
 103                 lineno++;
 104                 if (len >=sizeof(buffer) - 1 && buffer[len-1] != '\n'){
 105                         printf("Error line %d - no \\n found on string. "
 106                                         "Check if line too long\n", lineno);
 107                         goto error1;
 108                 }
 109                 if ((pos = memchr(buffer, ';', sizeof(buffer))) != NULL) {
 110                         *pos = '\0';
 111                         len = pos -  buffer;
 112                 }
 113
 114                 len = _strip(buffer, len);
 115                 if (buffer[0] != '[' && memchr(buffer, '=', len) == NULL)
 116                         continue;
 117
 118                 if (buffer[0] == '[') {
 119                         /* section heading line */
 120                         char *end = memchr(buffer, ']', len);
 121                         if (end == NULL) {
 122                                 printf("Error line %d - no terminating '[' found\n", lineno);
 123                                 goto error1;
 124                         }
 125                         *end = '\0';
 126                         _strip(&buffer[1], end - &buffer[1]);
 127
 128                         /* close off old section and add start new one */
 129                         if (curr_section >= 0)
 130                                 cfg->sections[curr_section]->num_entries = curr_entry + 1;
 131                         curr_section++;
 132
 133                         /* resize overall struct if we don't have room for more sections */
 134                         if (curr_section == allocated_sections) {
 135                                 allocated_sections += CFG_ALLOC_SECTION_BATCH;
 136                                 struct cfg_file *n_cfg = realloc(cfg, sizeof(*cfg) +
 137                                                 sizeof(cfg->sections[0]) * allocated_sections);
 138                                 if (n_cfg == NULL) {
 139                                         printf("Error - no more memory\n");
 140                                         goto error1;
 141                                 }
 142                                 cfg = n_cfg;
 143                         }
 144
 145                         /* allocate space for new section */
 146                         allocated_entries = CFG_ALLOC_ENTRY_BATCH;
 147                         curr_entry = -1;
 148                         cfg->sections[curr_section] = malloc(sizeof(*cfg->sections[0]) +
 149                                         sizeof(cfg->sections[0]->entries[0]) * allocated_entries);
 150                         if (cfg->sections[curr_section] == NULL) {
 151                                 printf("Error - no more memory\n");
 152                                 goto error1;
 153                         }
 154
 155                         snprintf(cfg->sections[curr_section]->name,
 156                                         sizeof(cfg->sections[0]->name),
 157                                         "%s", &buffer[1]);
 158                 }
 159                 else {
 160                         /* value line */
 161                         if (curr_section < 0) {
 162                                 printf("Error line %d - value outside of section\n", lineno);
 163                                 goto error1;
 164                         }
 165
 166                         struct cfg_section *sect = cfg->sections[curr_section];
 167                         char *split[2];
 168                         if (rte_strsplit(buffer, sizeof(buffer), split, 2, '=') != 2) {
 169                                 printf("Error at line %d - cannot split string\n", lineno);
 170                                 goto error1;
 171                         }
 172
 173                         curr_entry++;
 174                         if (curr_entry == allocated_entries) {
 175                                 allocated_entries += CFG_ALLOC_ENTRY_BATCH;
 176                                 struct cfg_section *n_sect = realloc(sect, sizeof(*sect) +
 177                                                 sizeof(sect->entries[0]) * allocated_entries);
 178                                 if (n_sect == NULL) {
 179                                         printf("Error - no more memory\n");
 180                                         goto error1;
 181                                 }
 182                                 sect = cfg->sections[curr_section] = n_sect;
 183                         }
 184
 185                         sect->entries[curr_entry] = malloc(sizeof(*sect->entries[0]));
 186                         if (sect->entries[curr_entry] == NULL) {
 187                                 printf("Error - no more memory\n");
 188                                 goto error1;
 189                         }
 190
 191                         struct cfg_entry *entry = sect->entries[curr_entry];
 192                         snprintf(entry->name, sizeof(entry->name), "%s", split[0]);
 193                         snprintf(entry->value, sizeof(entry->value), "%s", split[1]);
 194                         _strip(entry->name, strnlen(entry->name, sizeof(entry->name)));
 195                         _strip(entry->value, strnlen(entry->value, sizeof(entry->value)));
 196                 }
 197         }
 198         fclose(f);
 199         cfg->flags = flags;
 200         cfg->sections[curr_section]->num_entries = curr_entry + 1;
 201         cfg->num_sections = curr_section + 1;
 202         return cfg;
 203
 204 error1:
 205         cfg_close(cfg);
 206 error2:
 207         fclose(f);
 208         return NULL;
 209 }
 210
 211
 212 int cfg_close(struct cfg_file *cfg)
 213 {
 214         int i, j;
 215
 216         if (cfg == NULL)
 217                 return -1;
 218
 219         for(i = 0; i < cfg->num_sections; i++) {
 220                 if (cfg->sections[i] != NULL) {
 221                         if (cfg->sections[i]->num_entries) {
 222                                 for(j = 0; j < cfg->sections[i]->num_entries; j++) {
 223                                         if (cfg->sections[i]->entries[j] != NULL)
 224                                                 free(cfg->sections[i]->entries[j]);
 225                                 }
 226                         }
 227                         free(cfg->sections[i]);
 228                 }
 229         }
 230         free(cfg);
 231
 232         return 0;
 233 }
 234
 235 int
 236 cfg_num_sections(struct cfg_file *cfg, const char *sectionname, size_t length)
 237 {
 238         int i;
 239         int num_sections = 0;
 240         for (i = 0; i < cfg->num_sections; i++) {
 241                 if (strncmp(cfg->sections[i]->name, sectionname, length) == 0)
 242                         num_sections++;
 243         }
 244         return num_sections;
 245 }
 246
 247 int
 248 cfg_sections(struct cfg_file *cfg, char *sections[], int max_sections)
 249 {
 250         int i;
 251         for (i = 0; i < cfg->num_sections && i < max_sections; i++) {
 252                 snprintf(sections[i], CFG_NAME_LEN, "%s",  cfg->sections[i]->name);
 253         }
 254         return i;
 255 }
 256
 257 static const struct cfg_section *
 258 _get_section(struct cfg_file *cfg, const char *sectionname)
 259 {
 260         int i;
 261         for (i = 0; i < cfg->num_sections; i++) {
 262                 if (strncmp(cfg->sections[i]->name, sectionname,
 263                                 sizeof(cfg->sections[0]->name)) == 0)
 264                         return cfg->sections[i];
 265         }
 266         return NULL;
 267 }
 268
 269 int
 270 cfg_has_section(struct cfg_file *cfg, const char *sectionname)
 271 {
 272         return (_get_section(cfg, sectionname) != NULL);
 273 }
 274
 275 int
 276 cfg_section_num_entries(struct cfg_file *cfg, const char *sectionname)
 277 {
 278         const struct cfg_section *s = _get_section(cfg, sectionname);
 279         if (s == NULL)
 280                 return -1;
 281         return s->num_entries;
 282 }
 283
 284
 285 int
 286 cfg_section_entries(struct cfg_file *cfg, const char *sectionname,
 287                 struct cfg_entry *entries, int max_entries)
 288 {
 289         int i;
 290         const struct cfg_section *sect = _get_section(cfg, sectionname);
 291         if (sect == NULL)
 292                 return -1;
 293         for (i = 0; i < max_entries && i < sect->num_entries; i++)
 294                 entries[i] = *sect->entries[i];
 295         return i;
 296 }
 297
 298 const char *
 299 cfg_get_entry(struct cfg_file *cfg, const char *sectionname,
 300                 const char *entryname)
 301 {
 302         int i;
 303         const struct cfg_section *sect = _get_section(cfg, sectionname);
 304         if (sect == NULL)
 305                 return NULL;
 306         for (i = 0; i < sect->num_entries; i++)
 307                 if (strncmp(sect->entries[i]->name, entryname, CFG_NAME_LEN) == 0)
 308                         return sect->entries[i]->value;
 309         return NULL;
 310 }
 311
 312 int
 313 cfg_has_entry(struct cfg_file *cfg, const char *sectionname,
 314                 const char *entryname)
 315 {
 316         return (cfg_get_entry(cfg, sectionname, entryname) != NULL);
 317 }
 318
 319
 320 int
 321 cfg_load_port(struct cfg_file *cfg, struct rte_sched_port_params *port_params)
 322 {
 323         const char *entry;
 324         int j;
 325
 326         if (!cfg || !port_params)
 327                 return -1;
 328
 329         entry = cfg_get_entry(cfg, "port", "frame overhead");
 330         if (entry)
 331                 port_params->frame_overhead = (uint32_t)atoi(entry);
 332
 333         entry = cfg_get_entry(cfg, "port", "number of subports per port");
 334         if (entry)
 335                 port_params->n_subports_per_port = (uint32_t)atoi(entry);
 336
 337         entry = cfg_get_entry(cfg, "port", "number of pipes per subport");
 338         if (entry)
 339                 port_params->n_pipes_per_subport = (uint32_t)atoi(entry);
 340
 341         entry = cfg_get_entry(cfg, "port", "queue sizes");
 342         if (entry) {
 343                 char *next;
 344
 345                 for(j = 0; j < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; j++) {
 346                         port_params->qsize[j] = (uint16_t)strtol(entry, &next, 10);
 347                         if (next == NULL)
 348                                 break;
 349                         entry = next;
 350                 }
 351         }
 352
 353 #ifdef RTE_SCHED_RED
 354         for (j = 0; j < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; j++) {
 355                 char str[32];
 356
 357                 /* Parse WRED min thresholds */
 358                 snprintf(str, sizeof(str), "tc %d wred min", j);
 359                 entry = cfg_get_entry(cfg, "red", str);
 360                 if (entry) {
 361                         char *next;
 362                         int k;
 363                         /* for each packet colour (green, yellow, red) */
 364                         for (k = 0; k < e_RTE_METER_COLORS; k++) {
 365                                 port_params->red_params[j][k].min_th
 366                                         = (uint16_t)strtol(entry, &next, 10);
 367                                 if (next == NULL)
 368                                         break;
 369                                 entry = next;
 370                         }
 371                 }
 372
 373                 /* Parse WRED max thresholds */
 374                 snprintf(str, sizeof(str), "tc %d wred max", j);
 375                 entry = cfg_get_entry(cfg, "red", str);
 376                 if (entry) {
 377                         char *next;
 378                         int k;
 379                         /* for each packet colour (green, yellow, red) */
 380                         for (k = 0; k < e_RTE_METER_COLORS; k++) {
 381                                 port_params->red_params[j][k].max_th
 382                                         = (uint16_t)strtol(entry, &next, 10);
 383                                 if (next == NULL)
 384                                         break;
 385                                 entry = next;
 386                         }
 387                 }
 388
 389                 /* Parse WRED inverse mark probabilities */
 390                 snprintf(str, sizeof(str), "tc %d wred inv prob", j);
 391                 entry = cfg_get_entry(cfg, "red", str);
 392                 if (entry) {
 393                         char *next;
 394                         int k;
 395                         /* for each packet colour (green, yellow, red) */
 396                         for (k = 0; k < e_RTE_METER_COLORS; k++) {
 397                                 port_params->red_params[j][k].maxp_inv
 398                                         = (uint8_t)strtol(entry, &next, 10);
 399
 400                                 if (next == NULL)
 401                                         break;
 402                                 entry = next;
 403                         }
 404                 }
 405
 406                 /* Parse WRED EWMA filter weights */
 407                 snprintf(str, sizeof(str), "tc %d wred weight", j);
 408                 entry = cfg_get_entry(cfg, "red", str);
 409                 if (entry) {
 410                         char *next;
 411                         int k;
 412                         /* for each packet colour (green, yellow, red) */
 413                         for (k = 0; k < e_RTE_METER_COLORS; k++) {
 414                                 port_params->red_params[j][k].wq_log2
 415                                         = (uint8_t)strtol(entry, &next, 10);
 416                                 if (next == NULL)
 417                                         break;
 418                                 entry = next;
 419                         }
 420                 }
 421         }
 422 #endif /* RTE_SCHED_RED */
 423
 424         return 0;
 425 }
 426
 427 int
 428 cfg_load_pipe(struct cfg_file *cfg, struct rte_sched_pipe_params *pipe_params)
 429 {
 430         int i, j;
 431         char *next;
 432         const char *entry;
 433         int profiles;
 434
 435         if (!cfg || !pipe_params)
 436                 return -1;
 437
 438         profiles = cfg_num_sections(cfg, "pipe profile", sizeof("pipe profile") - 1);
 439         port_params.n_pipe_profiles = profiles;
 440
 441         for (j = 0; j < profiles; j++) {
 442                 char pipe_name[32];
 443                 snprintf(pipe_name, sizeof(pipe_name), "pipe profile %d", j);
 444
 445                 entry = cfg_get_entry(cfg, pipe_name, "tb rate");
 446                 if (entry)
 447                         pipe_params[j].tb_rate = (uint32_t)atoi(entry);
 448
 449                 entry = cfg_get_entry(cfg, pipe_name, "tb size");
 450                 if (entry)
 451                         pipe_params[j].tb_size = (uint32_t)atoi(entry);
 452
 453                 entry = cfg_get_entry(cfg, pipe_name, "tc period");
 454                 if (entry)
 455                         pipe_params[j].tc_period = (uint32_t)atoi(entry);
 456
 457                 entry = cfg_get_entry(cfg, pipe_name, "tc 0 rate");
 458                 if (entry)
 459                         pipe_params[j].tc_rate[0] = (uint32_t)atoi(entry);
 460
 461                 entry = cfg_get_entry(cfg, pipe_name, "tc 1 rate");
 462                 if (entry)
 463                         pipe_params[j].tc_rate[1] = (uint32_t)atoi(entry);
 464
 465                 entry = cfg_get_entry(cfg, pipe_name, "tc 2 rate");
 466                 if (entry)
 467                         pipe_params[j].tc_rate[2] = (uint32_t)atoi(entry);
 468
 469                 entry = cfg_get_entry(cfg, pipe_name, "tc 3 rate");
 470                 if (entry)
 471                         pipe_params[j].tc_rate[3] = (uint32_t)atoi(entry);
 472
 473 #ifdef RTE_SCHED_SUBPORT_TC_OV
 474                 entry = cfg_get_entry(cfg, pipe_name, "tc 3 oversubscription weight");
 475                 if (entry)
 476                         pipe_params[j].tc_ov_weight = (uint8_t)atoi(entry);
 477 #endif
 478
 479                 entry = cfg_get_entry(cfg, pipe_name, "tc 0 wrr weights");
 480                 if (entry) {
 481                         for(i = 0; i < RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS; i++) {
 482                                 pipe_params[j].wrr_weights[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE*0 + i] =
 483                                         (uint8_t)strtol(entry, &next, 10);
 484                                 if (next == NULL)
 485                                         break;
 486                                 entry = next;
 487                         }
 488                 }
 489                 entry = cfg_get_entry(cfg, pipe_name, "tc 1 wrr weights");
 490                 if (entry) {
 491                         for(i = 0; i < RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS; i++) {
 492                                 pipe_params[j].wrr_weights[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE*1 + i] =
 493                                         (uint8_t)strtol(entry, &next, 10);
 494                                 if (next == NULL)
 495                                         break;
 496                                 entry = next;
 497                         }
 498                 }
 499                 entry = cfg_get_entry(cfg, pipe_name, "tc 2 wrr weights");
 500                 if (entry) {
 501                         for(i = 0; i < RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS; i++) {
 502                                 pipe_params[j].wrr_weights[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE*2 + i] =
 503                                         (uint8_t)strtol(entry, &next, 10);
 504                                 if (next == NULL)
 505                                         break;
 506                                 entry = next;
 507                         }
 508                 }
 509                 entry = cfg_get_entry(cfg, pipe_name, "tc 3 wrr weights");
 510                 if (entry) {
 511                         for(i = 0; i < RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS; i++) {
 512                                 pipe_params[j].wrr_weights[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE*3 + i] =
 513                                         (uint8_t)strtol(entry, &next, 10);
 514                                 if (next == NULL)
 515                                         break;
 516                                 entry = next;
 517                         }
 518                 }
 519         }
 520         return 0;
 521 }
 522
 523 int
 524 cfg_load_subport(struct cfg_file *cfg, struct rte_sched_subport_params *subport_params)
 525 {
 526         const char *entry;
 527         int i, j, k;
 528
 529         if (!cfg || !subport_params)
 530                 return -1;
 531
 532         memset(app_pipe_to_profile, -1, sizeof(app_pipe_to_profile));
 533
 534         for (i = 0; i < MAX_SCHED_SUBPORTS; i++) {
 535                 char sec_name[CFG_NAME_LEN];
 536                 snprintf(sec_name, sizeof(sec_name), "subport %d", i);
 537
 538                 if (cfg_has_section(cfg, sec_name)) {
 539                         entry = cfg_get_entry(cfg, sec_name, "tb rate");
 540                         if (entry)
 541                                 subport_params[i].tb_rate = (uint32_t)atoi(entry);
 542
 543                         entry = cfg_get_entry(cfg, sec_name, "tb size");
 544                         if (entry)
 545                                 subport_params[i].tb_size = (uint32_t)atoi(entry);
 546
 547                         entry = cfg_get_entry(cfg, sec_name, "tc period");
 548                         if (entry)
 549                                 subport_params[i].tc_period = (uint32_t)atoi(entry);
 550
 551                         entry = cfg_get_entry(cfg, sec_name, "tc 0 rate");
 552                         if (entry)
 553                                 subport_params[i].tc_rate[0] = (uint32_t)atoi(entry);
 554
 555                         entry = cfg_get_entry(cfg, sec_name, "tc 1 rate");
 556                         if (entry)
 557                                 subport_params[i].tc_rate[1] = (uint32_t)atoi(entry);
 558
 559                         entry = cfg_get_entry(cfg, sec_name, "tc 2 rate");
 560                         if (entry)
 561                                 subport_params[i].tc_rate[2] = (uint32_t)atoi(entry);
 562
 563                         entry = cfg_get_entry(cfg, sec_name, "tc 3 rate");
 564                         if (entry)
 565                                 subport_params[i].tc_rate[3] = (uint32_t)atoi(entry);
 566
 567                         int n_entries = cfg_section_num_entries(cfg, sec_name);
 568                         struct cfg_entry entries[n_entries];
 569
 570                         cfg_section_entries(cfg, sec_name, entries, n_entries);
 571
 572                         for (j = 0; j < n_entries; j++) {
 573                                 if (strncmp("pipe", entries[j].name, sizeof("pipe") - 1) == 0) {
 574                                         int profile;
 575                                         char *tokens[2] = {NULL, NULL};
 576                                         int n_tokens;
 577                                         int begin, end;
 578
 579                                         profile = atoi(entries[j].value);
 580                                         n_tokens = rte_strsplit(&entries[j].name[sizeof("pipe")],
 581                                                         strnlen(entries[j].name, CFG_NAME_LEN), tokens, 2, '-');
 582
 583                                         begin =  atoi(tokens[0]);
 584                                         if (n_tokens == 2)
 585                                                 end = atoi(tokens[1]);
 586                                         else
 587                                                 end = begin;
 588
 589                                         if (end >= MAX_SCHED_PIPES || begin > end)
 590                                                 return -1;
 591
 592                                         for (k = begin; k <= end; k++) {
 593                                                 char profile_name[CFG_NAME_LEN];
 594
 595                                                 snprintf(profile_name, sizeof(profile_name),
 596                                                                 "pipe profile %d", profile);
 597                                                 if (cfg_has_section(cfg, profile_name))
 598                                                         app_pipe_to_profile[i][k] = profile;
 599                                                 else
 600                                                         rte_exit(EXIT_FAILURE, "Wrong pipe profile %s\n",
 601                                                                         entries[j].value);
 602
 603                                         }
 604                                 }
 605                         }
 606                 }
 607         }
 608
 609         return 0;
 610 }
 611
 612