app/test/test_distributor.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2017 Intel Corporation
   3  */
   4
   5 #include "test.h"
   6
   7 #include <unistd.h>
   8 #include <string.h>
   9 #include <rte_cycles.h>
  10 #include <rte_errno.h>
  11 #include <rte_mempool.h>
  12 #include <rte_mbuf.h>
  13 #include <rte_distributor.h>
  14 #include <rte_string_fns.h>
  15
  16 #define ITER_POWER 20 /* log 2 of how many iterations we do when timing. */
  17 #define BURST 32
  18 #define BIG_BATCH 1024
  19
  20 struct worker_params {
  21         char name[64];
  22         struct rte_distributor *dist;
  23 };
  24
  25 struct worker_params worker_params;
  26
  27 /* statics - all zero-initialized by default */
  28 static volatile int quit;      /**< general quit variable for all threads */
  29 static volatile int zero_quit; /**< var for when we just want thr0 to quit*/
  30 static volatile int zero_sleep; /**< thr0 has quit basic loop and is sleeping*/
  31 static volatile unsigned worker_idx;
  32 static volatile unsigned zero_idx;
  33
  34 struct worker_stats {
  35         volatile unsigned handled_packets;
  36 } __rte_cache_aligned;
  37 struct worker_stats worker_stats[RTE_MAX_LCORE];
  38
  39 /* returns the total count of the number of packets handled by the worker
  40  * functions given below.
  41  */
  42 static inline unsigned
  43 total_packet_count(void)
  44 {
  45         unsigned i, count = 0;
  46         for (i = 0; i < worker_idx; i++)
  47                 count += __atomic_load_n(&worker_stats[i].handled_packets,
  48                                 __ATOMIC_RELAXED);
  49         return count;
  50 }
  51
  52 /* resets the packet counts for a new test */
  53 static inline void
  54 clear_packet_count(void)
  55 {
  56         unsigned int i;
  57         for (i = 0; i < RTE_MAX_LCORE; i++)
  58                 __atomic_store_n(&worker_stats[i].handled_packets, 0,
  59                         __ATOMIC_RELAXED);
  60 }
  61
  62 /* this is the basic worker function for sanity test
  63  * it does nothing but return packets and count them.
  64  */
  65 static int
  66 handle_work(void *arg)
  67 {
  68         struct rte_mbuf *buf[8] __rte_cache_aligned;
  69         struct worker_params *wp = arg;
  70         struct rte_distributor *db = wp->dist;
  71         unsigned int num;
  72         unsigned int id = __atomic_fetch_add(&worker_idx, 1, __ATOMIC_RELAXED);
  73
  74         num = rte_distributor_get_pkt(db, id, buf, NULL, 0);
  75         while (!quit) {
  76                 __atomic_fetch_add(&worker_stats[id].handled_packets, num,
  77                                 __ATOMIC_RELAXED);
  78                 num = rte_distributor_get_pkt(db, id,
  79                                 buf, buf, num);
  80         }
  81         __atomic_fetch_add(&worker_stats[id].handled_packets, num,
  82                         __ATOMIC_RELAXED);
  83         rte_distributor_return_pkt(db, id, buf, num);
  84         return 0;
  85 }
  86
  87 /* do basic sanity testing of the distributor. This test tests the following:
  88  * - send 32 packets through distributor with the same tag and ensure they
  89  *   all go to the one worker
  90  * - send 32 packets through the distributor with two different tags and
  91  *   verify that they go equally to two different workers.
  92  * - send 32 packets with different tags through the distributors and
  93  *   just verify we get all packets back.
  94  * - send 1024 packets through the distributor, gathering the returned packets
  95  *   as we go. Then verify that we correctly got all 1024 pointers back again,
  96  *   not necessarily in the same order (as different flows).
  97  */
  98 static int
  99 sanity_test(struct worker_params *wp, struct rte_mempool *p)
 100 {
 101         struct rte_distributor *db = wp->dist;
 102         struct rte_mbuf *bufs[BURST];
 103         struct rte_mbuf *returns[BURST*2];
 104         unsigned int i, count;
 105         unsigned int retries;
 106         unsigned int processed;
 107
 108         printf("=== Basic distributor sanity tests ===\n");
 109         clear_packet_count();
 110         if (rte_mempool_get_bulk(p, (void *)bufs, BURST) != 0) {
 111                 printf("line %d: Error getting mbufs from pool\n", __LINE__);
 112                 return -1;
 113         }
 114
 115         /* now set all hash values in all buffers to zero, so all pkts go to the
 116          * one worker thread */
 117         for (i = 0; i < BURST; i++)
 118                 bufs[i]->hash.usr = 0;
 119
 120         processed = 0;
 121         while (processed < BURST)
 122                 processed += rte_distributor_process(db, &bufs[processed],
 123                         BURST - processed);
 124
 125         count = 0;
 126         do {
 127
 128                 rte_distributor_flush(db);
 129                 count += rte_distributor_returned_pkts(db,
 130                                 returns, BURST*2);
 131         } while (count < BURST);
 132
 133         if (total_packet_count() != BURST) {
 134                 printf("Line %d: Error, not all packets flushed. "
 135                                 "Expected %u, got %u\n",
 136                                 __LINE__, BURST, total_packet_count());
 137                 return -1;
 138         }
 139
 140         for (i = 0; i < rte_lcore_count() - 1; i++)
 141                 printf("Worker %u handled %u packets\n", i,
 142                         __atomic_load_n(&worker_stats[i].handled_packets,
 143                                         __ATOMIC_RELAXED));
 144         printf("Sanity test with all zero hashes done.\n");
 145
 146         /* pick two flows and check they go correctly */
 147         if (rte_lcore_count() >= 3) {
 148                 clear_packet_count();
 149                 for (i = 0; i < BURST; i++)
 150                         bufs[i]->hash.usr = (i & 1) << 8;
 151
 152                 rte_distributor_process(db, bufs, BURST);
 153                 count = 0;
 154                 do {
 155                         rte_distributor_flush(db);
 156                         count += rte_distributor_returned_pkts(db,
 157                                         returns, BURST*2);
 158                 } while (count < BURST);
 159                 if (total_packet_count() != BURST) {
 160                         printf("Line %d: Error, not all packets flushed. "
 161                                         "Expected %u, got %u\n",
 162                                         __LINE__, BURST, total_packet_count());
 163                         return -1;
 164                 }
 165
 166                 for (i = 0; i < rte_lcore_count() - 1; i++)
 167                         printf("Worker %u handled %u packets\n", i,
 168                                 __atomic_load_n(
 169                                         &worker_stats[i].handled_packets,
 170                                         __ATOMIC_RELAXED));
 171                 printf("Sanity test with two hash values done\n");
 172         }
 173
 174         /* give a different hash value to each packet,
 175          * so load gets distributed */
 176         clear_packet_count();
 177         for (i = 0; i < BURST; i++)
 178                 bufs[i]->hash.usr = i+1;
 179
 180         rte_distributor_process(db, bufs, BURST);
 181         count = 0;
 182         do {
 183                 rte_distributor_flush(db);
 184                 count += rte_distributor_returned_pkts(db,
 185                                 returns, BURST*2);
 186         } while (count < BURST);
 187         if (total_packet_count() != BURST) {
 188                 printf("Line %d: Error, not all packets flushed. "
 189                                 "Expected %u, got %u\n",
 190                                 __LINE__, BURST, total_packet_count());
 191                 return -1;
 192         }
 193
 194         for (i = 0; i < rte_lcore_count() - 1; i++)
 195                 printf("Worker %u handled %u packets\n", i,
 196                         __atomic_load_n(&worker_stats[i].handled_packets,
 197                                         __ATOMIC_RELAXED));
 198         printf("Sanity test with non-zero hashes done\n");
 199
 200         rte_mempool_put_bulk(p, (void *)bufs, BURST);
 201
 202         /* sanity test with BIG_BATCH packets to ensure they all arrived back
 203          * from the returned packets function */
 204         clear_packet_count();
 205         struct rte_mbuf *many_bufs[BIG_BATCH], *return_bufs[BIG_BATCH];
 206         unsigned num_returned = 0;
 207
 208         /* flush out any remaining packets */
 209         rte_distributor_flush(db);
 210         rte_distributor_clear_returns(db);
 211
 212         if (rte_mempool_get_bulk(p, (void *)many_bufs, BIG_BATCH) != 0) {
 213                 printf("line %d: Error getting mbufs from pool\n", __LINE__);
 214                 return -1;
 215         }
 216         for (i = 0; i < BIG_BATCH; i++)
 217                 many_bufs[i]->hash.usr = i << 2;
 218
 219         printf("=== testing big burst (%s) ===\n", wp->name);
 220         for (i = 0; i < BIG_BATCH/BURST; i++) {
 221                 rte_distributor_process(db,
 222                                 &many_bufs[i*BURST], BURST);
 223                 count = rte_distributor_returned_pkts(db,
 224                                 &return_bufs[num_returned],
 225                                 BIG_BATCH - num_returned);
 226                 num_returned += count;
 227         }
 228         rte_distributor_flush(db);
 229         count = rte_distributor_returned_pkts(db,
 230                 &return_bufs[num_returned],
 231                         BIG_BATCH - num_returned);
 232         num_returned += count;
 233         retries = 0;
 234         do {
 235                 rte_distributor_flush(db);
 236                 count = rte_distributor_returned_pkts(db,
 237                                 &return_bufs[num_returned],
 238                                 BIG_BATCH - num_returned);
 239                 num_returned += count;
 240                 retries++;
 241         } while ((num_returned < BIG_BATCH) && (retries < 100));
 242
 243         if (num_returned != BIG_BATCH) {
 244                 printf("line %d: Missing packets, expected %d\n",
 245                                 __LINE__, num_returned);
 246                 return -1;
 247         }
 248
 249         /* big check -  make sure all packets made it back!! */
 250         for (i = 0; i < BIG_BATCH; i++) {
 251                 unsigned j;
 252                 struct rte_mbuf *src = many_bufs[i];
 253                 for (j = 0; j < BIG_BATCH; j++) {
 254                         if (return_bufs[j] == src)
 255                                 break;
 256                 }
 257
 258                 if (j == BIG_BATCH) {
 259                         printf("Error: could not find source packet #%u\n", i);
 260                         return -1;
 261                 }
 262         }
 263         printf("Sanity test of returned packets done\n");
 264
 265         rte_mempool_put_bulk(p, (void *)many_bufs, BIG_BATCH);
 266
 267         printf("\n");
 268         return 0;
 269 }
 270
 271
 272 /* to test that the distributor does not lose packets, we use this worker
 273  * function which frees mbufs when it gets them. The distributor thread does
 274  * the mbuf allocation. If distributor drops packets we'll eventually run out
 275  * of mbufs.
 276  */
 277 static int
 278 handle_work_with_free_mbufs(void *arg)
 279 {
 280         struct rte_mbuf *buf[8] __rte_cache_aligned;
 281         struct worker_params *wp = arg;
 282         struct rte_distributor *d = wp->dist;
 283         unsigned int i;
 284         unsigned int num;
 285         unsigned int id = __atomic_fetch_add(&worker_idx, 1, __ATOMIC_RELAXED);
 286
 287         num = rte_distributor_get_pkt(d, id, buf, NULL, 0);
 288         while (!quit) {
 289                 __atomic_fetch_add(&worker_stats[id].handled_packets, num,
 290                                 __ATOMIC_RELAXED);
 291                 for (i = 0; i < num; i++)
 292                         rte_pktmbuf_free(buf[i]);
 293                 num = rte_distributor_get_pkt(d, id, buf, NULL, 0);
 294         }
 295         __atomic_fetch_add(&worker_stats[id].handled_packets, num,
 296                         __ATOMIC_RELAXED);
 297         rte_distributor_return_pkt(d, id, buf, num);
 298         return 0;
 299 }
 300
 301 /* Perform a sanity test of the distributor with a large number of packets,
 302  * where we allocate a new set of mbufs for each burst. The workers then
 303  * free the mbufs. This ensures that we don't have any packet leaks in the
 304  * library.
 305  */
 306 static int
 307 sanity_test_with_mbuf_alloc(struct worker_params *wp, struct rte_mempool *p)
 308 {
 309         struct rte_distributor *d = wp->dist;
 310         unsigned i;
 311         struct rte_mbuf *bufs[BURST];
 312         unsigned int processed;
 313
 314         printf("=== Sanity test with mbuf alloc/free (%s) ===\n", wp->name);
 315
 316         clear_packet_count();
 317         for (i = 0; i < ((1<<ITER_POWER)); i += BURST) {
 318                 unsigned j;
 319                 while (rte_mempool_get_bulk(p, (void *)bufs, BURST) < 0)
 320                         rte_distributor_process(d, NULL, 0);
 321                 for (j = 0; j < BURST; j++) {
 322                         bufs[j]->hash.usr = (i+j) << 1;
 323                 }
 324
 325                 processed = 0;
 326                 while (processed < BURST)
 327                         processed += rte_distributor_process(d,
 328                                 &bufs[processed], BURST - processed);
 329         }
 330
 331         rte_distributor_flush(d);
 332
 333         rte_delay_us(10000);
 334
 335         if (total_packet_count() < (1<<ITER_POWER)) {
 336                 printf("Line %u: Packet count is incorrect, %u, expected %u\n",
 337                                 __LINE__, total_packet_count(),
 338                                 (1<<ITER_POWER));
 339                 return -1;
 340         }
 341
 342         printf("Sanity test with mbuf alloc/free passed\n\n");
 343         return 0;
 344 }
 345
 346 static int
 347 handle_work_for_shutdown_test(void *arg)
 348 {
 349         struct rte_mbuf *buf[8] __rte_cache_aligned;
 350         struct worker_params *wp = arg;
 351         struct rte_distributor *d = wp->dist;
 352         unsigned int num;
 353         unsigned int zero_id = 0;
 354         unsigned int zero_unset;
 355         const unsigned int id = __atomic_fetch_add(&worker_idx, 1,
 356                         __ATOMIC_RELAXED);
 357
 358         num = rte_distributor_get_pkt(d, id, buf, NULL, 0);
 359
 360         if (num > 0) {
 361                 zero_unset = RTE_MAX_LCORE;
 362                 __atomic_compare_exchange_n(&zero_idx, &zero_unset, id,
 363                         false, __ATOMIC_ACQ_REL, __ATOMIC_ACQUIRE);
 364         }
 365         zero_id = __atomic_load_n(&zero_idx, __ATOMIC_ACQUIRE);
 366
 367         /* wait for quit single globally, or for worker zero, wait
 368          * for zero_quit */
 369         while (!quit && !(id == zero_id && zero_quit)) {
 370                 __atomic_fetch_add(&worker_stats[id].handled_packets, num,
 371                                 __ATOMIC_RELAXED);
 372                 num = rte_distributor_get_pkt(d, id, buf, NULL, 0);
 373
 374                 if (num > 0) {
 375                         zero_unset = RTE_MAX_LCORE;
 376                         __atomic_compare_exchange_n(&zero_idx, &zero_unset, id,
 377                                 false, __ATOMIC_ACQ_REL, __ATOMIC_ACQUIRE);
 378                 }
 379                 zero_id = __atomic_load_n(&zero_idx, __ATOMIC_ACQUIRE);
 380         }
 381
 382         __atomic_fetch_add(&worker_stats[id].handled_packets, num,
 383                         __ATOMIC_RELAXED);
 384         if (id == zero_id) {
 385                 rte_distributor_return_pkt(d, id, NULL, 0);
 386
 387                 /* for worker zero, allow it to restart to pick up last packet
 388                  * when all workers are shutting down.
 389                  */
 390                 __atomic_store_n(&zero_sleep, 1, __ATOMIC_RELEASE);
 391                 while (zero_quit)
 392                         usleep(100);
 393                 __atomic_store_n(&zero_sleep, 0, __ATOMIC_RELEASE);
 394
 395                 num = rte_distributor_get_pkt(d, id, buf, NULL, 0);
 396
 397                 while (!quit) {
 398                         __atomic_fetch_add(&worker_stats[id].handled_packets,
 399                                         num, __ATOMIC_RELAXED);
 400                         num = rte_distributor_get_pkt(d, id, buf, NULL, 0);
 401                 }
 402         }
 403         rte_distributor_return_pkt(d, id, buf, num);
 404         return 0;
 405 }
 406
 407
 408 /* Perform a sanity test of the distributor with a large number of packets,
 409  * where we allocate a new set of mbufs for each burst. The workers then
 410  * free the mbufs. This ensures that we don't have any packet leaks in the
 411  * library.
 412  */
 413 static int
 414 sanity_test_with_worker_shutdown(struct worker_params *wp,
 415                 struct rte_mempool *p)
 416 {
 417         struct rte_distributor *d = wp->dist;
 418         struct rte_mbuf *bufs[BURST];
 419         struct rte_mbuf *bufs2[BURST];
 420         unsigned int i;
 421         unsigned int failed = 0;
 422         unsigned int processed = 0;
 423
 424         printf("=== Sanity test of worker shutdown ===\n");
 425
 426         clear_packet_count();
 427
 428         if (rte_mempool_get_bulk(p, (void *)bufs, BURST) != 0) {
 429                 printf("line %d: Error getting mbufs from pool\n", __LINE__);
 430                 return -1;
 431         }
 432
 433         /*
 434          * Now set all hash values in all buffers to same value so all
 435          * pkts go to the one worker thread
 436          */
 437         for (i = 0; i < BURST; i++)
 438                 bufs[i]->hash.usr = 1;
 439
 440         processed = 0;
 441         while (processed < BURST)
 442                 processed += rte_distributor_process(d, &bufs[processed],
 443                         BURST - processed);
 444         rte_distributor_flush(d);
 445
 446         /* at this point, we will have processed some packets and have a full
 447          * backlog for the other ones at worker 0.
 448          */
 449
 450         /* get more buffers to queue up, again setting them to the same flow */
 451         if (rte_mempool_get_bulk(p, (void *)bufs2, BURST) != 0) {
 452                 printf("line %d: Error getting mbufs from pool\n", __LINE__);
 453                 rte_mempool_put_bulk(p, (void *)bufs, BURST);
 454                 return -1;
 455         }
 456         for (i = 0; i < BURST; i++)
 457                 bufs2[i]->hash.usr = 1;
 458
 459         /* get worker zero to quit */
 460         zero_quit = 1;
 461         rte_distributor_process(d, bufs2, BURST);
 462
 463         /* flush the distributor */
 464         rte_distributor_flush(d);
 465         while (!__atomic_load_n(&zero_sleep, __ATOMIC_ACQUIRE))
 466                 rte_distributor_flush(d);
 467
 468         zero_quit = 0;
 469         while (__atomic_load_n(&zero_sleep, __ATOMIC_ACQUIRE))
 470                 rte_delay_us(100);
 471
 472         for (i = 0; i < rte_lcore_count() - 1; i++)
 473                 printf("Worker %u handled %u packets\n", i,
 474                         __atomic_load_n(&worker_stats[i].handled_packets,
 475                                         __ATOMIC_RELAXED));
 476
 477         if (total_packet_count() != BURST * 2) {
 478                 printf("Line %d: Error, not all packets flushed. "
 479                                 "Expected %u, got %u\n",
 480                                 __LINE__, BURST * 2, total_packet_count());
 481                 failed = 1;
 482         }
 483
 484         rte_mempool_put_bulk(p, (void *)bufs, BURST);
 485         rte_mempool_put_bulk(p, (void *)bufs2, BURST);
 486
 487         if (failed)
 488                 return -1;
 489
 490         printf("Sanity test with worker shutdown passed\n\n");
 491         return 0;
 492 }
 493
 494 /* Test that the flush function is able to move packets between workers when
 495  * one worker shuts down..
 496  */
 497 static int
 498 test_flush_with_worker_shutdown(struct worker_params *wp,
 499                 struct rte_mempool *p)
 500 {
 501         struct rte_distributor *d = wp->dist;
 502         struct rte_mbuf *bufs[BURST];
 503         unsigned int i;
 504         unsigned int failed = 0;
 505         unsigned int processed;
 506
 507         printf("=== Test flush fn with worker shutdown (%s) ===\n", wp->name);
 508
 509         clear_packet_count();
 510         if (rte_mempool_get_bulk(p, (void *)bufs, BURST) != 0) {
 511                 printf("line %d: Error getting mbufs from pool\n", __LINE__);
 512                 return -1;
 513         }
 514
 515         /* now set all hash values in all buffers to zero, so all pkts go to the
 516          * one worker thread */
 517         for (i = 0; i < BURST; i++)
 518                 bufs[i]->hash.usr = 0;
 519
 520         processed = 0;
 521         while (processed < BURST)
 522                 processed += rte_distributor_process(d, &bufs[processed],
 523                         BURST - processed);
 524         /* at this point, we will have processed some packets and have a full
 525          * backlog for the other ones at worker 0.
 526          */
 527
 528         /* get worker zero to quit */
 529         zero_quit = 1;
 530
 531         /* flush the distributor */
 532         rte_distributor_flush(d);
 533
 534         while (!__atomic_load_n(&zero_sleep, __ATOMIC_ACQUIRE))
 535                 rte_distributor_flush(d);
 536
 537         zero_quit = 0;
 538
 539         while (__atomic_load_n(&zero_sleep, __ATOMIC_ACQUIRE))
 540                 rte_delay_us(100);
 541
 542         for (i = 0; i < rte_lcore_count() - 1; i++)
 543                 printf("Worker %u handled %u packets\n", i,
 544                         __atomic_load_n(&worker_stats[i].handled_packets,
 545                                         __ATOMIC_RELAXED));
 546
 547         if (total_packet_count() != BURST) {
 548                 printf("Line %d: Error, not all packets flushed. "
 549                                 "Expected %u, got %u\n",
 550                                 __LINE__, BURST, total_packet_count());
 551                 failed = 1;
 552         }
 553
 554         rte_mempool_put_bulk(p, (void *)bufs, BURST);
 555
 556         if (failed)
 557                 return -1;
 558
 559         printf("Flush test with worker shutdown passed\n\n");
 560         return 0;
 561 }
 562
 563 static int
 564 handle_and_mark_work(void *arg)
 565 {
 566         struct rte_mbuf *buf[8] __rte_cache_aligned;
 567         struct worker_params *wp = arg;
 568         struct rte_distributor *db = wp->dist;
 569         unsigned int num, i;
 570         unsigned int id = __atomic_fetch_add(&worker_idx, 1, __ATOMIC_RELAXED);
 571         num = rte_distributor_get_pkt(db, id, buf, NULL, 0);
 572         while (!quit) {
 573                 __atomic_fetch_add(&worker_stats[id].handled_packets, num,
 574                                 __ATOMIC_RELAXED);
 575                 for (i = 0; i < num; i++)
 576                         buf[i]->udata64 += id + 1;
 577                 num = rte_distributor_get_pkt(db, id,
 578                                 buf, buf, num);
 579         }
 580         __atomic_fetch_add(&worker_stats[id].handled_packets, num,
 581                         __ATOMIC_RELAXED);
 582         rte_distributor_return_pkt(db, id, buf, num);
 583         return 0;
 584 }
 585
 586 /* sanity_mark_test sends packets to workers which mark them.
 587  * Every packet has also encoded sequence number.
 588  * The returned packets are sorted and verified if they were handled
 589  * by proper workers.
 590  */
 591 static int
 592 sanity_mark_test(struct worker_params *wp, struct rte_mempool *p)
 593 {
 594         const unsigned int buf_count = 24;
 595         const unsigned int burst = 8;
 596         const unsigned int shift = 12;
 597         const unsigned int seq_shift = 10;
 598
 599         struct rte_distributor *db = wp->dist;
 600         struct rte_mbuf *bufs[buf_count];
 601         struct rte_mbuf *returns[buf_count];
 602         unsigned int i, count, id;
 603         unsigned int sorted[buf_count], seq;
 604         unsigned int failed = 0;
 605         unsigned int processed;
 606
 607         printf("=== Marked packets test ===\n");
 608         clear_packet_count();
 609         if (rte_mempool_get_bulk(p, (void *)bufs, buf_count) != 0) {
 610                 printf("line %d: Error getting mbufs from pool\n", __LINE__);
 611                 return -1;
 612         }
 613
 614         /* bufs' hashes will be like these below, but shifted left.
 615          * The shifting is for avoiding collisions with backlogs
 616          * and in-flight tags left by previous tests.
 617          * [1, 1, 1, 1, 1, 1, 1, 1
 618          *  1, 1, 1, 1, 2, 2, 2, 2
 619          *  2, 2, 2, 2, 1, 1, 1, 1]
 620          */
 621         for (i = 0; i < burst; i++) {
 622                 bufs[0 * burst + i]->hash.usr = 1 << shift;
 623                 bufs[1 * burst + i]->hash.usr = ((i < burst / 2) ? 1 : 2)
 624                         << shift;
 625                 bufs[2 * burst + i]->hash.usr = ((i < burst / 2) ? 2 : 1)
 626                         << shift;
 627         }
 628         /* Assign a sequence number to each packet. The sequence is shifted,
 629          * so that lower bits of the udate64 will hold mark from worker.
 630          */
 631         for (i = 0; i < buf_count; i++)
 632                 bufs[i]->udata64 = i << seq_shift;
 633
 634         count = 0;
 635         for (i = 0; i < buf_count/burst; i++) {
 636                 processed = 0;
 637                 while (processed < burst)
 638                         processed += rte_distributor_process(db,
 639                                 &bufs[i * burst + processed],
 640                                 burst - processed);
 641                 count += rte_distributor_returned_pkts(db, &returns[count],
 642                         buf_count - count);
 643         }
 644
 645         do {
 646                 rte_distributor_flush(db);
 647                 count += rte_distributor_returned_pkts(db, &returns[count],
 648                         buf_count - count);
 649         } while (count < buf_count);
 650
 651         for (i = 0; i < rte_lcore_count() - 1; i++)
 652                 printf("Worker %u handled %u packets\n", i,
 653                         __atomic_load_n(&worker_stats[i].handled_packets,
 654                                         __ATOMIC_RELAXED));
 655
 656         /* Sort returned packets by sent order (sequence numbers). */
 657         for (i = 0; i < buf_count; i++) {
 658                 seq = returns[i]->udata64 >> seq_shift;
 659                 id = returns[i]->udata64 - (seq << seq_shift);
 660                 sorted[seq] = id;
 661         }
 662
 663         /* Verify that packets [0-11] and [20-23] were processed
 664          * by the same worker
 665          */
 666         for (i = 1; i < 12; i++) {
 667                 if (sorted[i] != sorted[0]) {
 668                         printf("Packet number %u processed by worker %u,"
 669                                 " but should be processes by worker %u\n",
 670                                 i, sorted[i], sorted[0]);
 671                         failed = 1;
 672                 }
 673         }
 674         for (i = 20; i < 24; i++) {
 675                 if (sorted[i] != sorted[0]) {
 676                         printf("Packet number %u processed by worker %u,"
 677                                 " but should be processes by worker %u\n",
 678                                 i, sorted[i], sorted[0]);
 679                         failed = 1;
 680                 }
 681         }
 682         /* And verify that packets [12-19] were processed
 683          * by the another worker
 684          */
 685         for (i = 13; i < 20; i++) {
 686                 if (sorted[i] != sorted[12]) {
 687                         printf("Packet number %u processed by worker %u,"
 688                                 " but should be processes by worker %u\n",
 689                                 i, sorted[i], sorted[12]);
 690                         failed = 1;
 691                 }
 692         }
 693
 694         rte_mempool_put_bulk(p, (void *)bufs, buf_count);
 695
 696         if (failed)
 697                 return -1;
 698
 699         printf("Marked packets test passed\n");
 700         return 0;
 701 }
 702
 703 static
 704 int test_error_distributor_create_name(void)
 705 {
 706         struct rte_distributor *d = NULL;
 707         struct rte_distributor *db = NULL;
 708         char *name = NULL;
 709
 710         d = rte_distributor_create(name, rte_socket_id(),
 711                         rte_lcore_count() - 1,
 712                         RTE_DIST_ALG_SINGLE);
 713         if (d != NULL || rte_errno != EINVAL) {
 714                 printf("ERROR: No error on create() with NULL name param\n");
 715                 return -1;
 716         }
 717
 718         db = rte_distributor_create(name, rte_socket_id(),
 719                         rte_lcore_count() - 1,
 720                         RTE_DIST_ALG_BURST);
 721         if (db != NULL || rte_errno != EINVAL) {
 722                 printf("ERROR: No error on create() with NULL param\n");
 723                 return -1;
 724         }
 725
 726         return 0;
 727 }
 728
 729
 730 static
 731 int test_error_distributor_create_numworkers(void)
 732 {
 733         struct rte_distributor *ds = NULL;
 734         struct rte_distributor *db = NULL;
 735
 736         ds = rte_distributor_create("test_numworkers", rte_socket_id(),
 737                         RTE_MAX_LCORE + 10,
 738                         RTE_DIST_ALG_SINGLE);
 739         if (ds != NULL || rte_errno != EINVAL) {
 740                 printf("ERROR: No error on create() with num_workers > MAX\n");
 741                 return -1;
 742         }
 743
 744         db = rte_distributor_create("test_numworkers", rte_socket_id(),
 745                         RTE_MAX_LCORE + 10,
 746                         RTE_DIST_ALG_BURST);
 747         if (db != NULL || rte_errno != EINVAL) {
 748                 printf("ERROR: No error on create() num_workers > MAX\n");
 749                 return -1;
 750         }
 751
 752         return 0;
 753 }
 754
 755
 756 /* Useful function which ensures that all worker functions terminate */
 757 static void
 758 quit_workers(struct worker_params *wp, struct rte_mempool *p)
 759 {
 760         struct rte_distributor *d = wp->dist;
 761         const unsigned num_workers = rte_lcore_count() - 1;
 762         unsigned i;
 763         struct rte_mbuf *bufs[RTE_MAX_LCORE];
 764         struct rte_mbuf *returns[RTE_MAX_LCORE];
 765         if (rte_mempool_get_bulk(p, (void *)bufs, num_workers) != 0) {
 766                 printf("line %d: Error getting mbufs from pool\n", __LINE__);
 767                 return;
 768         }
 769
 770         zero_quit = 0;
 771         quit = 1;
 772         for (i = 0; i < num_workers; i++) {
 773                 bufs[i]->hash.usr = i << 1;
 774                 rte_distributor_process(d, &bufs[i], 1);
 775         }
 776
 777         rte_distributor_process(d, NULL, 0);
 778         rte_distributor_flush(d);
 779         rte_eal_mp_wait_lcore();
 780
 781         while (rte_distributor_returned_pkts(d, returns, RTE_MAX_LCORE))
 782                 ;
 783
 784         rte_distributor_clear_returns(d);
 785         rte_mempool_put_bulk(p, (void *)bufs, num_workers);
 786
 787         quit = 0;
 788         worker_idx = 0;
 789         zero_idx = RTE_MAX_LCORE;
 790         zero_quit = 0;
 791         zero_sleep = 0;
 792 }
 793
 794 static int
 795 test_distributor(void)
 796 {
 797         static struct rte_distributor *ds;
 798         static struct rte_distributor *db;
 799         static struct rte_distributor *dist[2];
 800         static struct rte_mempool *p;
 801         int i;
 802
 803         if (rte_lcore_count() < 2) {
 804                 printf("Not enough cores for distributor_autotest, expecting at least 2\n");
 805                 return TEST_SKIPPED;
 806         }
 807
 808         if (db == NULL) {
 809                 db = rte_distributor_create("Test_dist_burst", rte_socket_id(),
 810                                 rte_lcore_count() - 1,
 811                                 RTE_DIST_ALG_BURST);
 812                 if (db == NULL) {
 813                         printf("Error creating burst distributor\n");
 814                         return -1;
 815                 }
 816         } else {
 817                 rte_distributor_flush(db);
 818                 rte_distributor_clear_returns(db);
 819         }
 820
 821         if (ds == NULL) {
 822                 ds = rte_distributor_create("Test_dist_single",
 823                                 rte_socket_id(),
 824                                 rte_lcore_count() - 1,
 825                         RTE_DIST_ALG_SINGLE);
 826                 if (ds == NULL) {
 827                         printf("Error creating single distributor\n");
 828                         return -1;
 829                 }
 830         } else {
 831                 rte_distributor_flush(ds);
 832                 rte_distributor_clear_returns(ds);
 833         }
 834
 835         const unsigned nb_bufs = (511 * rte_lcore_count()) < BIG_BATCH ?
 836                         (BIG_BATCH * 2) - 1 : (511 * rte_lcore_count());
 837         if (p == NULL) {
 838                 p = rte_pktmbuf_pool_create("DT_MBUF_POOL", nb_bufs, BURST,
 839                         0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
 840                 if (p == NULL) {
 841                         printf("Error creating mempool\n");
 842                         return -1;
 843                 }
 844         }
 845
 846         dist[0] = ds;
 847         dist[1] = db;
 848
 849         for (i = 0; i < 2; i++) {
 850
 851                 worker_params.dist = dist[i];
 852                 if (i)
 853                         strlcpy(worker_params.name, "burst",
 854                                         sizeof(worker_params.name));
 855                 else
 856                         strlcpy(worker_params.name, "single",
 857                                         sizeof(worker_params.name));
 858
 859                 rte_eal_mp_remote_launch(handle_work,
 860                                 &worker_params, SKIP_MASTER);
 861                 if (sanity_test(&worker_params, p) < 0)
 862                         goto err;
 863                 quit_workers(&worker_params, p);
 864
 865                 rte_eal_mp_remote_launch(handle_work_with_free_mbufs,
 866                                 &worker_params, SKIP_MASTER);
 867                 if (sanity_test_with_mbuf_alloc(&worker_params, p) < 0)
 868                         goto err;
 869                 quit_workers(&worker_params, p);
 870
 871                 if (rte_lcore_count() > 2) {
 872                         rte_eal_mp_remote_launch(handle_work_for_shutdown_test,
 873                                         &worker_params,
 874                                         SKIP_MASTER);
 875                         if (sanity_test_with_worker_shutdown(&worker_params,
 876                                         p) < 0)
 877                                 goto err;
 878                         quit_workers(&worker_params, p);
 879
 880                         rte_eal_mp_remote_launch(handle_work_for_shutdown_test,
 881                                         &worker_params,
 882                                         SKIP_MASTER);
 883                         if (test_flush_with_worker_shutdown(&worker_params,
 884                                         p) < 0)
 885                                 goto err;
 886                         quit_workers(&worker_params, p);
 887
 888                         rte_eal_mp_remote_launch(handle_and_mark_work,
 889                                         &worker_params, SKIP_MASTER);
 890                         if (sanity_mark_test(&worker_params, p) < 0)
 891                                 goto err;
 892                         quit_workers(&worker_params, p);
 893
 894                 } else {
 895                         printf("Too few cores to run worker shutdown test\n");
 896                 }
 897
 898         }
 899
 900         if (test_error_distributor_create_numworkers() == -1 ||
 901                         test_error_distributor_create_name() == -1) {
 902                 printf("rte_distributor_create parameter check tests failed");
 903                 return -1;
 904         }
 905
 906         return 0;
 907
 908 err:
 909         quit_workers(&worker_params, p);
 910         return -1;
 911 }
 912
 913 REGISTER_TEST_COMMAND(distributor_autotest, test_distributor);