lib/librte_eal/common/rte_service.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2017 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   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 <unistd.h>
  36 #include <inttypes.h>
  37 #include <limits.h>
  38 #include <string.h>
  39 #include <dirent.h>
  40
  41 #include <rte_service.h>
  42 #include "include/rte_service_component.h"
  43
  44 #include <rte_eal.h>
  45 #include <rte_lcore.h>
  46 #include <rte_common.h>
  47 #include <rte_debug.h>
  48 #include <rte_cycles.h>
  49 #include <rte_atomic.h>
  50 #include <rte_memory.h>
  51 #include <rte_malloc.h>
  52
  53 #define RTE_SERVICE_NUM_MAX 64
  54
  55 #define SERVICE_F_REGISTERED    (1 << 0)
  56 #define SERVICE_F_STATS_ENABLED (1 << 1)
  57
  58 /* runstates for services and lcores, denoting if they are active or not */
  59 #define RUNSTATE_STOPPED 0
  60 #define RUNSTATE_RUNNING 1
  61
  62 /* internal representation of a service */
  63 struct rte_service_spec_impl {
  64         /* public part of the struct */
  65         struct rte_service_spec spec;
  66
  67         /* atomic lock that when set indicates a service core is currently
  68          * running this service callback. When not set, a core may take the
  69          * lock and then run the service callback.
  70          */
  71         rte_atomic32_t execute_lock;
  72
  73         /* API set/get-able variables */
  74         int8_t app_runstate;
  75         int8_t comp_runstate;
  76         uint8_t internal_flags;
  77
  78         /* per service statistics */
  79         uint32_t num_mapped_cores;
  80         uint64_t calls;
  81         uint64_t cycles_spent;
  82 } __rte_cache_aligned;
  83
  84 /* the internal values of a service core */
  85 struct core_state {
  86         /* map of services IDs are run on this core */
  87         uint64_t service_mask;
  88         uint8_t runstate; /* running or stopped */
  89         uint8_t is_service_core; /* set if core is currently a service core */
  90
  91         /* extreme statistics */
  92         uint64_t calls_per_service[RTE_SERVICE_NUM_MAX];
  93 } __rte_cache_aligned;
  94
  95 static uint32_t rte_service_count;
  96 static struct rte_service_spec_impl *rte_services;
  97 static struct core_state *lcore_states;
  98 static uint32_t rte_service_library_initialized;
  99
 100 int32_t rte_service_init(void)
 101 {
 102         if (rte_service_library_initialized) {
 103                 printf("service library init() called, init flag %d\n",
 104                         rte_service_library_initialized);
 105                 return -EALREADY;
 106         }
 107
 108         rte_services = rte_calloc("rte_services", RTE_SERVICE_NUM_MAX,
 109                         sizeof(struct rte_service_spec_impl),
 110                         RTE_CACHE_LINE_SIZE);
 111         if (!rte_services) {
 112                 printf("error allocating rte services array\n");
 113                 return -ENOMEM;
 114         }
 115
 116         lcore_states = rte_calloc("rte_service_core_states", RTE_MAX_LCORE,
 117                         sizeof(struct core_state), RTE_CACHE_LINE_SIZE);
 118         if (!lcore_states) {
 119                 printf("error allocating core states array\n");
 120                 return -ENOMEM;
 121         }
 122
 123         int i;
 124         int count = 0;
 125         struct rte_config *cfg = rte_eal_get_configuration();
 126         for (i = 0; i < RTE_MAX_LCORE; i++) {
 127                 if (lcore_config[i].core_role == ROLE_SERVICE) {
 128                         if ((unsigned int)i == cfg->master_lcore)
 129                                 continue;
 130                         rte_service_lcore_add(i);
 131                         count++;
 132                 }
 133         }
 134
 135         rte_service_library_initialized = 1;
 136         return 0;
 137 }
 138
 139 /* returns 1 if service is registered and has not been unregistered
 140  * Returns 0 if service never registered, or has been unregistered
 141  */
 142 static inline int
 143 service_valid(uint32_t id)
 144 {
 145         return !!(rte_services[id].internal_flags & SERVICE_F_REGISTERED);
 146 }
 147
 148 /* validate ID and retrieve service pointer, or return error value */
 149 #define SERVICE_VALID_GET_OR_ERR_RET(id, service, retval) do {          \
 150         if (id >= RTE_SERVICE_NUM_MAX || !service_valid(id))            \
 151                 return retval;                                          \
 152         service = &rte_services[id];                                    \
 153 } while (0)
 154
 155 /* returns 1 if statistics should be colleced for service
 156  * Returns 0 if statistics should not be collected for service
 157  */
 158 static inline int
 159 service_stats_enabled(struct rte_service_spec_impl *impl)
 160 {
 161         return !!(impl->internal_flags & SERVICE_F_STATS_ENABLED);
 162 }
 163
 164 static inline int
 165 service_mt_safe(struct rte_service_spec_impl *s)
 166 {
 167         return !!(s->spec.capabilities & RTE_SERVICE_CAP_MT_SAFE);
 168 }
 169
 170 int32_t rte_service_set_stats_enable(uint32_t id, int32_t enabled)
 171 {
 172         struct rte_service_spec_impl *s;
 173         SERVICE_VALID_GET_OR_ERR_RET(id, s, 0);
 174
 175         if (enabled)
 176                 s->internal_flags |= SERVICE_F_STATS_ENABLED;
 177         else
 178                 s->internal_flags &= ~(SERVICE_F_STATS_ENABLED);
 179
 180         return 0;
 181 }
 182
 183 uint32_t
 184 rte_service_get_count(void)
 185 {
 186         return rte_service_count;
 187 }
 188
 189 int32_t rte_service_get_by_name(const char *name, uint32_t *service_id)
 190 {
 191         if (!service_id)
 192                 return -EINVAL;
 193
 194         int i;
 195         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 196                 if (service_valid(i) &&
 197                                 strcmp(name, rte_services[i].spec.name) == 0) {
 198                         *service_id = i;
 199                         return 0;
 200                 }
 201         }
 202
 203         return -ENODEV;
 204 }
 205
 206 const char *
 207 rte_service_get_name(uint32_t id)
 208 {
 209         struct rte_service_spec_impl *s;
 210         SERVICE_VALID_GET_OR_ERR_RET(id, s, 0);
 211         return s->spec.name;
 212 }
 213
 214 int32_t
 215 rte_service_probe_capability(uint32_t id, uint32_t capability)
 216 {
 217         struct rte_service_spec_impl *s;
 218         SERVICE_VALID_GET_OR_ERR_RET(id, s, -EINVAL);
 219         return !!(s->spec.capabilities & capability);
 220 }
 221
 222 int32_t
 223 rte_service_component_register(const struct rte_service_spec *spec,
 224                                uint32_t *id_ptr)
 225 {
 226         uint32_t i;
 227         int32_t free_slot = -1;
 228
 229         if (spec->callback == NULL || strlen(spec->name) == 0)
 230                 return -EINVAL;
 231
 232         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 233                 if (!service_valid(i)) {
 234                         free_slot = i;
 235                         break;
 236                 }
 237         }
 238
 239         if ((free_slot < 0) || (i == RTE_SERVICE_NUM_MAX))
 240                 return -ENOSPC;
 241
 242         struct rte_service_spec_impl *s = &rte_services[free_slot];
 243         s->spec = *spec;
 244         s->internal_flags |= SERVICE_F_REGISTERED;
 245
 246         rte_smp_wmb();
 247         rte_service_count++;
 248
 249         if (id_ptr)
 250                 *id_ptr = free_slot;
 251
 252         return 0;
 253 }
 254
 255 int32_t
 256 rte_service_component_unregister(uint32_t id)
 257 {
 258         uint32_t i;
 259         struct rte_service_spec_impl *s;
 260         SERVICE_VALID_GET_OR_ERR_RET(id, s, -EINVAL);
 261
 262         rte_service_count--;
 263         rte_smp_wmb();
 264
 265         s->internal_flags &= ~(SERVICE_F_REGISTERED);
 266
 267         /* clear the run-bit in all cores */
 268         for (i = 0; i < RTE_MAX_LCORE; i++)
 269                 lcore_states[i].service_mask &= ~(UINT64_C(1) << id);
 270
 271         memset(&rte_services[id], 0, sizeof(struct rte_service_spec_impl));
 272
 273         return 0;
 274 }
 275
 276 int32_t
 277 rte_service_component_runstate_set(uint32_t id, uint32_t runstate)
 278 {
 279         struct rte_service_spec_impl *s;
 280         SERVICE_VALID_GET_OR_ERR_RET(id, s, -EINVAL);
 281
 282         if (runstate)
 283                 s->comp_runstate = RUNSTATE_RUNNING;
 284         else
 285                 s->comp_runstate = RUNSTATE_STOPPED;
 286
 287         rte_smp_wmb();
 288         return 0;
 289 }
 290
 291 int32_t
 292 rte_service_runstate_set(uint32_t id, uint32_t runstate)
 293 {
 294         struct rte_service_spec_impl *s;
 295         SERVICE_VALID_GET_OR_ERR_RET(id, s, -EINVAL);
 296
 297         if (runstate)
 298                 s->app_runstate = RUNSTATE_RUNNING;
 299         else
 300                 s->app_runstate = RUNSTATE_STOPPED;
 301
 302         rte_smp_wmb();
 303         return 0;
 304 }
 305
 306 int32_t
 307 rte_service_runstate_get(uint32_t id)
 308 {
 309         struct rte_service_spec_impl *s;
 310         SERVICE_VALID_GET_OR_ERR_RET(id, s, -EINVAL);
 311         rte_smp_rmb();
 312         return (s->app_runstate == RUNSTATE_RUNNING) &&
 313                 (s->comp_runstate == RUNSTATE_RUNNING) &&
 314                 (s->num_mapped_cores > 0);
 315 }
 316
 317 static inline void
 318 rte_service_runner_do_callback(struct rte_service_spec_impl *s,
 319                                struct core_state *cs, uint32_t service_idx)
 320 {
 321         void *userdata = s->spec.callback_userdata;
 322
 323         if (service_stats_enabled(s)) {
 324                 uint64_t start = rte_rdtsc();
 325                 s->spec.callback(userdata);
 326                 uint64_t end = rte_rdtsc();
 327                 s->cycles_spent += end - start;
 328                 cs->calls_per_service[service_idx]++;
 329                 s->calls++;
 330         } else
 331                 s->spec.callback(userdata);
 332 }
 333
 334 static int32_t
 335 rte_service_runner_func(void *arg)
 336 {
 337         RTE_SET_USED(arg);
 338         uint32_t i;
 339         const int lcore = rte_lcore_id();
 340         struct core_state *cs = &lcore_states[lcore];
 341
 342         while (lcore_states[lcore].runstate == RUNSTATE_RUNNING) {
 343                 const uint64_t service_mask = cs->service_mask;
 344
 345                 for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 346                         if (!service_valid(i))
 347                                 continue;
 348                         struct rte_service_spec_impl *s = &rte_services[i];
 349                         if (s->comp_runstate != RUNSTATE_RUNNING ||
 350                                         s->app_runstate != RUNSTATE_RUNNING ||
 351                                         !(service_mask & (UINT64_C(1) << i)))
 352                                 continue;
 353
 354                         /* check do we need cmpset, if MT safe or <= 1 core
 355                          * mapped, atomic ops are not required.
 356                          */
 357                         const int use_atomics = (service_mt_safe(s) == 0) &&
 358                                                 (s->num_mapped_cores > 1);
 359                         if (use_atomics) {
 360                                 uint32_t *lock = (uint32_t *)&s->execute_lock;
 361                                 if (rte_atomic32_cmpset(lock, 0, 1)) {
 362                                         rte_service_runner_do_callback(s, cs, i);
 363                                         rte_atomic32_clear(&s->execute_lock);
 364                                 }
 365                         } else
 366                                 rte_service_runner_do_callback(s, cs, i);
 367                 }
 368
 369                 rte_smp_rmb();
 370         }
 371
 372         lcore_config[lcore].state = WAIT;
 373
 374         return 0;
 375 }
 376
 377 int32_t
 378 rte_service_lcore_count(void)
 379 {
 380         int32_t count = 0;
 381         uint32_t i;
 382         for (i = 0; i < RTE_MAX_LCORE; i++)
 383                 count += lcore_states[i].is_service_core;
 384         return count;
 385 }
 386
 387 int32_t
 388 rte_service_lcore_list(uint32_t array[], uint32_t n)
 389 {
 390         uint32_t count = rte_service_lcore_count();
 391         if (count > n)
 392                 return -ENOMEM;
 393
 394         if (!array)
 395                 return -EINVAL;
 396
 397         uint32_t i;
 398         uint32_t idx = 0;
 399         for (i = 0; i < RTE_MAX_LCORE; i++) {
 400                 struct core_state *cs = &lcore_states[i];
 401                 if (cs->is_service_core) {
 402                         array[idx] = i;
 403                         idx++;
 404                 }
 405         }
 406
 407         return count;
 408 }
 409
 410 int32_t
 411 rte_service_lcore_count_services(uint32_t lcore)
 412 {
 413         if (lcore >= RTE_MAX_LCORE)
 414                 return -EINVAL;
 415
 416         struct core_state *cs = &lcore_states[lcore];
 417         if (!cs->is_service_core)
 418                 return -ENOTSUP;
 419
 420         return __builtin_popcountll(cs->service_mask);
 421 }
 422
 423 int32_t
 424 rte_service_start_with_defaults(void)
 425 {
 426         /* create a default mapping from cores to services, then start the
 427          * services to make them transparent to unaware applications.
 428          */
 429         uint32_t i;
 430         int ret;
 431         uint32_t count = rte_service_get_count();
 432
 433         int32_t lcore_iter = 0;
 434         uint32_t ids[RTE_MAX_LCORE] = {0};
 435         int32_t lcore_count = rte_service_lcore_list(ids, RTE_MAX_LCORE);
 436
 437         if (lcore_count == 0)
 438                 return -ENOTSUP;
 439
 440         for (i = 0; (int)i < lcore_count; i++)
 441                 rte_service_lcore_start(ids[i]);
 442
 443         for (i = 0; i < count; i++) {
 444                 /* do 1:1 core mapping here, with each service getting
 445                  * assigned a single core by default. Adding multiple services
 446                  * should multiplex to a single core, or 1:1 if there are the
 447                  * same amount of services as service-cores
 448                  */
 449                 ret = rte_service_map_lcore_set(i, ids[lcore_iter], 1);
 450                 if (ret)
 451                         return -ENODEV;
 452
 453                 lcore_iter++;
 454                 if (lcore_iter >= lcore_count)
 455                         lcore_iter = 0;
 456
 457                 ret = rte_service_runstate_set(i, 1);
 458                 if (ret)
 459                         return -ENOEXEC;
 460         }
 461
 462         return 0;
 463 }
 464
 465 static int32_t
 466 service_update(struct rte_service_spec *service, uint32_t lcore,
 467                 uint32_t *set, uint32_t *enabled)
 468 {
 469         uint32_t i;
 470         int32_t sid = -1;
 471
 472         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 473                 if ((struct rte_service_spec *)&rte_services[i] == service &&
 474                                 service_valid(i)) {
 475                         sid = i;
 476                         break;
 477                 }
 478         }
 479
 480         if (sid == -1 || lcore >= RTE_MAX_LCORE)
 481                 return -EINVAL;
 482
 483         if (!lcore_states[lcore].is_service_core)
 484                 return -EINVAL;
 485
 486         uint64_t sid_mask = UINT64_C(1) << sid;
 487         if (set) {
 488                 if (*set) {
 489                         lcore_states[lcore].service_mask |= sid_mask;
 490                         rte_services[sid].num_mapped_cores++;
 491                 } else {
 492                         lcore_states[lcore].service_mask &= ~(sid_mask);
 493                         rte_services[sid].num_mapped_cores--;
 494                 }
 495         }
 496
 497         if (enabled)
 498                 *enabled = !!(lcore_states[lcore].service_mask & (sid_mask));
 499
 500         rte_smp_wmb();
 501
 502         return 0;
 503 }
 504
 505 int32_t
 506 rte_service_map_lcore_set(uint32_t id, uint32_t lcore, uint32_t enabled)
 507 {
 508         struct rte_service_spec_impl *s;
 509         SERVICE_VALID_GET_OR_ERR_RET(id, s, -EINVAL);
 510         uint32_t on = enabled > 0;
 511         return service_update(&s->spec, lcore, &on, 0);
 512 }
 513
 514 int32_t
 515 rte_service_map_lcore_get(uint32_t id, uint32_t lcore)
 516 {
 517         struct rte_service_spec_impl *s;
 518         SERVICE_VALID_GET_OR_ERR_RET(id, s, -EINVAL);
 519         uint32_t enabled;
 520         int ret = service_update(&s->spec, lcore, 0, &enabled);
 521         if (ret == 0)
 522                 return enabled;
 523         return ret;
 524 }
 525
 526 int32_t rte_service_lcore_reset_all(void)
 527 {
 528         /* loop over cores, reset all to mask 0 */
 529         uint32_t i;
 530         for (i = 0; i < RTE_MAX_LCORE; i++) {
 531                 lcore_states[i].service_mask = 0;
 532                 lcore_states[i].is_service_core = 0;
 533                 lcore_states[i].runstate = RUNSTATE_STOPPED;
 534         }
 535         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++)
 536                 rte_services[i].num_mapped_cores = 0;
 537
 538         rte_smp_wmb();
 539
 540         return 0;
 541 }
 542
 543 static void
 544 set_lcore_state(uint32_t lcore, int32_t state)
 545 {
 546         /* mark core state in hugepage backed config */
 547         struct rte_config *cfg = rte_eal_get_configuration();
 548         cfg->lcore_role[lcore] = state;
 549
 550         /* mark state in process local lcore_config */
 551         lcore_config[lcore].core_role = state;
 552
 553         /* update per-lcore optimized state tracking */
 554         lcore_states[lcore].is_service_core = (state == ROLE_SERVICE);
 555 }
 556
 557 int32_t
 558 rte_service_lcore_add(uint32_t lcore)
 559 {
 560         if (lcore >= RTE_MAX_LCORE)
 561                 return -EINVAL;
 562         if (lcore_states[lcore].is_service_core)
 563                 return -EALREADY;
 564
 565         set_lcore_state(lcore, ROLE_SERVICE);
 566
 567         /* ensure that after adding a core the mask and state are defaults */
 568         lcore_states[lcore].service_mask = 0;
 569         lcore_states[lcore].runstate = RUNSTATE_STOPPED;
 570
 571         rte_smp_wmb();
 572
 573         return rte_eal_wait_lcore(lcore);
 574 }
 575
 576 int32_t
 577 rte_service_lcore_del(uint32_t lcore)
 578 {
 579         if (lcore >= RTE_MAX_LCORE)
 580                 return -EINVAL;
 581
 582         struct core_state *cs = &lcore_states[lcore];
 583         if (!cs->is_service_core)
 584                 return -EINVAL;
 585
 586         if (cs->runstate != RUNSTATE_STOPPED)
 587                 return -EBUSY;
 588
 589         set_lcore_state(lcore, ROLE_RTE);
 590
 591         rte_smp_wmb();
 592         return 0;
 593 }
 594
 595 int32_t
 596 rte_service_lcore_start(uint32_t lcore)
 597 {
 598         if (lcore >= RTE_MAX_LCORE)
 599                 return -EINVAL;
 600
 601         struct core_state *cs = &lcore_states[lcore];
 602         if (!cs->is_service_core)
 603                 return -EINVAL;
 604
 605         if (cs->runstate == RUNSTATE_RUNNING)
 606                 return -EALREADY;
 607
 608         /* set core to run state first, and then launch otherwise it will
 609          * return immediately as runstate keeps it in the service poll loop
 610          */
 611         lcore_states[lcore].runstate = RUNSTATE_RUNNING;
 612
 613         int ret = rte_eal_remote_launch(rte_service_runner_func, 0, lcore);
 614         /* returns -EBUSY if the core is already launched, 0 on success */
 615         return ret;
 616 }
 617
 618 int32_t
 619 rte_service_lcore_stop(uint32_t lcore)
 620 {
 621         if (lcore >= RTE_MAX_LCORE)
 622                 return -EINVAL;
 623
 624         if (lcore_states[lcore].runstate == RUNSTATE_STOPPED)
 625                 return -EALREADY;
 626
 627         uint32_t i;
 628         uint64_t service_mask = lcore_states[lcore].service_mask;
 629         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 630                 int32_t enabled = service_mask & (UINT64_C(1) << i);
 631                 int32_t service_running = rte_service_runstate_get(i);
 632                 int32_t only_core = rte_services[i].num_mapped_cores == 1;
 633
 634                 /* if the core is mapped, and the service is running, and this
 635                  * is the only core that is mapped, the service would cease to
 636                  * run if this core stopped, so fail instead.
 637                  */
 638                 if (enabled && service_running && only_core)
 639                         return -EBUSY;
 640         }
 641
 642         lcore_states[lcore].runstate = RUNSTATE_STOPPED;
 643
 644         return 0;
 645 }
 646
 647 static void
 648 rte_service_dump_one(FILE *f, struct rte_service_spec_impl *s,
 649                      uint64_t all_cycles, uint32_t reset)
 650 {
 651         /* avoid divide by zero */
 652         if (all_cycles == 0)
 653                 all_cycles = 1;
 654
 655         int calls = 1;
 656         if (s->calls != 0)
 657                 calls = s->calls;
 658
 659         fprintf(f, "  %s: stats %d\tcalls %"PRIu64"\tcycles %"
 660                         PRIu64"\tavg: %"PRIu64"\n",
 661                         s->spec.name, service_stats_enabled(s), s->calls,
 662                         s->cycles_spent, s->cycles_spent / calls);
 663
 664         if (reset) {
 665                 s->cycles_spent = 0;
 666                 s->calls = 0;
 667         }
 668 }
 669
 670 static void
 671 service_dump_calls_per_lcore(FILE *f, uint32_t lcore, uint32_t reset)
 672 {
 673         uint32_t i;
 674         struct core_state *cs = &lcore_states[lcore];
 675
 676         fprintf(f, "%02d\t", lcore);
 677         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 678                 if (!service_valid(i))
 679                         continue;
 680                 fprintf(f, "%"PRIu64"\t", cs->calls_per_service[i]);
 681                 if (reset)
 682                         cs->calls_per_service[i] = 0;
 683         }
 684         fprintf(f, "\n");
 685 }
 686
 687 int32_t rte_service_dump(FILE *f, uint32_t id)
 688 {
 689         uint32_t i;
 690         int print_one = (id != UINT32_MAX);
 691
 692         uint64_t total_cycles = 0;
 693
 694         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 695                 if (!service_valid(i))
 696                         continue;
 697                 total_cycles += rte_services[i].cycles_spent;
 698         }
 699
 700         /* print only the specified service */
 701         if (print_one) {
 702                 struct rte_service_spec_impl *s;
 703                 SERVICE_VALID_GET_OR_ERR_RET(id, s, -EINVAL);
 704                 fprintf(f, "Service %s Summary\n", s->spec.name);
 705                 uint32_t reset = 0;
 706                 rte_service_dump_one(f, s, total_cycles, reset);
 707                 return 0;
 708         }
 709
 710         /* print all services, as UINT32_MAX was passed as id */
 711         fprintf(f, "Services Summary\n");
 712         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 713                 if (!service_valid(i))
 714                         continue;
 715                 uint32_t reset = 1;
 716                 rte_service_dump_one(f, &rte_services[i], total_cycles, reset);
 717         }
 718
 719         fprintf(f, "Service Cores Summary\n");
 720         for (i = 0; i < RTE_MAX_LCORE; i++) {
 721                 if (lcore_config[i].core_role != ROLE_SERVICE)
 722                         continue;
 723
 724                 uint32_t reset = 1;
 725                 service_dump_calls_per_lcore(f, i, reset);
 726         }
 727
 728         return 0;
 729 }