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_mbuf_dyn.h>
  14 #include <rte_distributor.h>
  15 #include <rte_string_fns.h>
  16
  17 #define ITER_POWER 20 /* log 2 of how many iterations we do when timing. */
  18 #define BURST 32
  19 #define BIG_BATCH 1024
  20
  21 typedef uint32_t seq_dynfield_t;
  22 static int seq_dynfield_offset = -1;
  23
  24 static inline seq_dynfield_t *
  25 seq_field(struct rte_mbuf *mbuf)
  26 {
  27         return RTE_MBUF_DYNFIELD(mbuf, seq_dynfield_offset, seq_dynfield_t *);
  28 }
  29
  30 struct worker_params {
  31         char name[64];
  32         struct rte_distributor *dist;
  33 };
  34
  35 struct worker_params worker_params;
  36
  37 /* statics - all zero-initialized by default */
  38 static volatile int quit;      /**< general quit variable for all threads */
  39 static volatile int zero_quit; /**< var for when we just want thr0 to quit*/
  40 static volatile int zero_sleep; /**< thr0 has quit basic loop and is sleeping*/
  41 static volatile unsigned worker_idx;
  42 static volatile unsigned zero_idx;
  43
  44 struct worker_stats {
  45         volatile unsigned handled_packets;
  46 } __rte_cache_aligned;
  47 struct worker_stats worker_stats[RTE_MAX_LCORE];
  48
  49 /* returns the total count of the number of packets handled by the worker
  50  * functions given below.
  51  */
  52 static inline unsigned
  53 total_packet_count(void)
  54 {
  55         unsigned i, count = 0;
  56         for (i = 0; i < worker_idx; i++)
  57                 count += __atomic_load_n(&worker_stats[i].handled_packets,
  58                                 __ATOMIC_RELAXED);
  59         return count;
  60 }
  61
  62 /* resets the packet counts for a new test */
  63 static inline void
  64 clear_packet_count(void)
  65 {
  66         unsigned int i;
  67         for (i = 0; i < RTE_MAX_LCORE; i++)
  68                 __atomic_store_n(&worker_stats[i].handled_packets, 0,
  69                         __ATOMIC_RELAXED);
  70 }
  71
  72 /* this is the basic worker function for sanity test
  73  * it does nothing but return packets and count them.
  74  */
  75 static int
  76 handle_work(void *arg)
  77 {
  78         struct rte_mbuf *buf[8] __rte_cache_aligned;
  79         struct worker_params *wp = arg;
  80         struct rte_distributor *db = wp->dist;
  81         unsigned int num;
  82         unsigned int id = __atomic_fetch_add(&worker_idx, 1, __ATOMIC_RELAXED);
  83
  84         num = rte_distributor_get_pkt(db, id, buf, NULL, 0);
  85         while (!quit) {
  86                 __atomic_fetch_add(&worker_stats[id].handled_packets, num,
  87                                 __ATOMIC_RELAXED);
  88                 num = rte_distributor_get_pkt(db, id,
  89                                 buf, buf, num);
  90         }
  91         __atomic_fetch_add(&worker_stats[id].handled_packets, num,
  92                         __ATOMIC_RELAXED);
  93         rte_distributor_return_pkt(db, id, buf, num);
  94         return 0;
  95 }
  96
  97 /* do basic sanity testing of the distributor. This test tests the following:
  98  * - send 32 packets through distributor with the same tag and ensure they
  99  *   all go to the one worker
 100  * - send 32 packets through the distributor with two different tags and
 101  *   verify that they go equally to two different workers.
 102  * - send 32 packets with different tags through the distributors and
 103  *   just verify we get all packets back.
 104  * - send 1024 packets through the distributor, gathering the returned packets
 105  *   as we go. Then verify that we correctly got all 1024 pointers back again,
 106  *   not necessarily in the same order (as different flows).
 107  */
 108 static int
 109 sanity_test(struct worker_params *wp, struct rte_mempool *p)
 110 {
 111         struct rte_distributor *db = wp->dist;
 112         struct rte_mbuf *bufs[BURST];
 113         struct rte_mbuf *returns[BURST*2];
 114         unsigned int i, count;
 115         unsigned int retries;
 116         unsigned int processed;
 117
 118         printf("=== Basic distributor sanity tests ===\n");
 119         clear_packet_count();
 120         if (rte_mempool_get_bulk(p, (void *)bufs, BURST) != 0) {
 121                 printf("line %d: Error getting mbufs from pool\n", __LINE__);
 122                 return -1;
 123         }
 124
 125         /* now set all hash values in all buffers to zero, so all pkts go to the
 126          * one worker thread */
 127         for (i = 0; i < BURST; i++)
 128                 bufs[i]->hash.usr = 0;
 129
 130         processed = 0;
 131         while (processed < BURST)
 132                 processed += rte_distributor_process(db, &bufs[processed],
 133                         BURST - processed);
 134
 135         count = 0;
 136         do {
 137
 138                 rte_distributor_flush(db);
 139                 count += rte_distributor_returned_pkts(db,
 140                                 returns, BURST*2);
 141         } while (count < BURST);
 142
 143         if (total_packet_count() != BURST) {
 144                 printf("Line %d: Error, not all packets flushed. "
 145                                 "Expected %u, got %u\n",
 146                                 __LINE__, BURST, total_packet_count());
 147                 rte_mempool_put_bulk(p, (void *)bufs, BURST);
 148                 return -1;
 149         }
 150
 151         for (i = 0; i < rte_lcore_count() - 1; i++)
 152                 printf("Worker %u handled %u packets\n", i,
 153                         __atomic_load_n(&worker_stats[i].handled_packets,
 154                                         __ATOMIC_RELAXED));
 155         printf("Sanity test with all zero hashes done.\n");
 156
 157         /* pick two flows and check they go correctly */
 158         if (rte_lcore_count() >= 3) {
 159                 clear_packet_count();
 160                 for (i = 0; i < BURST; i++)
 161                         bufs[i]->hash.usr = (i & 1) << 8;
 162
 163                 rte_distributor_process(db, bufs, BURST);
 164                 count = 0;
 165                 do {
 166                         rte_distributor_flush(db);
 167                         count += rte_distributor_returned_pkts(db,
 168                                         returns, BURST*2);
 169                 } while (count < BURST);
 170                 if (total_packet_count() != BURST) {
 171                         printf("Line %d: Error, not all packets flushed. "
 172                                         "Expected %u, got %u\n",
 173                                         __LINE__, BURST, total_packet_count());
 174                         rte_mempool_put_bulk(p, (void *)bufs, BURST);
 175                         return -1;
 176                 }
 177
 178                 for (i = 0; i < rte_lcore_count() - 1; i++)
 179                         printf("Worker %u handled %u packets\n", i,
 180                                 __atomic_load_n(
 181                                         &worker_stats[i].handled_packets,
 182                                         __ATOMIC_RELAXED));
 183                 printf("Sanity test with two hash values done\n");
 184         }
 185
 186         /* give a different hash value to each packet,
 187          * so load gets distributed */
 188         clear_packet_count();
 189         for (i = 0; i < BURST; i++)
 190                 bufs[i]->hash.usr = i+1;
 191
 192         rte_distributor_process(db, bufs, BURST);
 193         count = 0;
 194         do {
 195                 rte_distributor_flush(db);
 196                 count += rte_distributor_returned_pkts(db,
 197                                 returns, BURST*2);
 198         } while (count < BURST);
 199         if (total_packet_count() != BURST) {
 200                 printf("Line %d: Error, not all packets flushed. "
 201                                 "Expected %u, got %u\n",
 202                                 __LINE__, BURST, total_packet_count());
 203                 rte_mempool_put_bulk(p, (void *)bufs, BURST);
 204                 return -1;
 205         }
 206
 207         for (i = 0; i < rte_lcore_count() - 1; i++)
 208                 printf("Worker %u handled %u packets\n", i,
 209                         __atomic_load_n(&worker_stats[i].handled_packets,
 210                                         __ATOMIC_RELAXED));
 211         printf("Sanity test with non-zero hashes done\n");
 212
 213         rte_mempool_put_bulk(p, (void *)bufs, BURST);
 214
 215         /* sanity test with BIG_BATCH packets to ensure they all arrived back
 216          * from the returned packets function */
 217         clear_packet_count();
 218         struct rte_mbuf *many_bufs[BIG_BATCH], *return_bufs[BIG_BATCH];
 219         unsigned num_returned = 0;
 220         unsigned int num_being_processed = 0;
 221         unsigned int return_buffer_capacity = 127;/* RTE_DISTRIB_RETURNS_MASK */
 222
 223         /* flush out any remaining packets */
 224         rte_distributor_flush(db);
 225         rte_distributor_clear_returns(db);
 226
 227         if (rte_mempool_get_bulk(p, (void *)many_bufs, BIG_BATCH) != 0) {
 228                 printf("line %d: Error getting mbufs from pool\n", __LINE__);
 229                 return -1;
 230         }
 231         for (i = 0; i < BIG_BATCH; i++)
 232                 many_bufs[i]->hash.usr = i << 2;
 233
 234         printf("=== testing big burst (%s) ===\n", wp->name);
 235         for (i = 0; i < BIG_BATCH/BURST; i++) {
 236                 rte_distributor_process(db,
 237                                 &many_bufs[i*BURST], BURST);
 238                 num_being_processed += BURST;
 239                 do {
 240                         count = rte_distributor_returned_pkts(db,
 241                                         &return_bufs[num_returned],
 242                                         BIG_BATCH - num_returned);
 243                         num_being_processed -= count;
 244                         num_returned += count;
 245                         rte_distributor_flush(db);
 246                 } while (num_being_processed + BURST > return_buffer_capacity);
 247         }
 248         retries = 0;
 249         do {
 250                 rte_distributor_flush(db);
 251                 count = rte_distributor_returned_pkts(db,
 252                                 &return_bufs[num_returned],
 253                                 BIG_BATCH - num_returned);
 254                 num_returned += count;
 255                 retries++;
 256         } while ((num_returned < BIG_BATCH) && (retries < 100));
 257
 258         if (num_returned != BIG_BATCH) {
 259                 printf("line %d: Missing packets, expected %d\n",
 260                                 __LINE__, num_returned);
 261                 rte_mempool_put_bulk(p, (void *)many_bufs, BIG_BATCH);
 262                 return -1;
 263         }
 264
 265         /* big check -  make sure all packets made it back!! */
 266         for (i = 0; i < BIG_BATCH; i++) {
 267                 unsigned j;
 268                 struct rte_mbuf *src = many_bufs[i];
 269                 for (j = 0; j < BIG_BATCH; j++) {
 270                         if (return_bufs[j] == src)
 271                                 break;
 272                 }
 273
 274                 if (j == BIG_BATCH) {
 275                         printf("Error: could not find source packet #%u\n", i);
 276                         rte_mempool_put_bulk(p, (void *)many_bufs, BIG_BATCH);
 277                         return -1;
 278                 }
 279         }
 280         printf("Sanity test of returned packets done\n");
 281
 282         rte_mempool_put_bulk(p, (void *)many_bufs, BIG_BATCH);
 283
 284         printf("\n");
 285         return 0;
 286 }
 287
 288
 289 /* to test that the distributor does not lose packets, we use this worker
 290  * function which frees mbufs when it gets them. The distributor thread does
 291  * the mbuf allocation. If distributor drops packets we'll eventually run out
 292  * of mbufs.
 293  */
 294 static int
 295 handle_work_with_free_mbufs(void *arg)
 296 {
 297         struct rte_mbuf *buf[8] __rte_cache_aligned;
 298         struct worker_params *wp = arg;
 299         struct rte_distributor *d = wp->dist;
 300         unsigned int i;
 301         unsigned int num;
 302         unsigned int id = __atomic_fetch_add(&worker_idx, 1, __ATOMIC_RELAXED);
 303
 304         num = rte_distributor_get_pkt(d, id, buf, NULL, 0);
 305         while (!quit) {
 306                 __atomic_fetch_add(&worker_stats[id].handled_packets, num,
 307                                 __ATOMIC_RELAXED);
 308                 for (i = 0; i < num; i++)
 309                         rte_pktmbuf_free(buf[i]);
 310                 num = rte_distributor_get_pkt(d, id, buf, NULL, 0);
 311         }
 312         __atomic_fetch_add(&worker_stats[id].handled_packets, num,
 313                         __ATOMIC_RELAXED);
 314         rte_distributor_return_pkt(d, id, buf, num);
 315         return 0;
 316 }
 317
 318 /* Perform a sanity test of the distributor with a large number of packets,
 319  * where we allocate a new set of mbufs for each burst. The workers then
 320  * free the mbufs. This ensures that we don't have any packet leaks in the
 321  * library.
 322  */
 323 static int
 324 sanity_test_with_mbuf_alloc(struct worker_params *wp, struct rte_mempool *p)
 325 {
 326         struct rte_distributor *d = wp->dist;
 327         unsigned i;
 328         struct rte_mbuf *bufs[BURST];
 329         unsigned int processed;
 330
 331         printf("=== Sanity test with mbuf alloc/free (%s) ===\n", wp->name);
 332
 333         clear_packet_count();
 334         for (i = 0; i < ((1<<ITER_POWER)); i += BURST) {
 335                 unsigned j;
 336                 while (rte_mempool_get_bulk(p, (void *)bufs, BURST) < 0)
 337                         rte_distributor_process(d, NULL, 0);
 338                 for (j = 0; j < BURST; j++) {
 339                         bufs[j]->hash.usr = (i+j) << 1;
 340                 }
 341
 342                 processed = 0;
 343                 while (processed < BURST)
 344                         processed += rte_distributor_process(d,
 345                                 &bufs[processed], BURST - processed);
 346         }
 347
 348         rte_distributor_flush(d);
 349
 350         rte_delay_us(10000);
 351
 352         if (total_packet_count() < (1<<ITER_POWER)) {
 353                 printf("Line %u: Packet count is incorrect, %u, expected %u\n",
 354                                 __LINE__, total_packet_count(),
 355                                 (1<<ITER_POWER));
 356                 return -1;
 357         }
 358
 359         printf("Sanity test with mbuf alloc/free passed\n\n");
 360         return 0;
 361 }
 362
 363 static int
 364 handle_work_for_shutdown_test(void *arg)
 365 {
 366         struct rte_mbuf *buf[8] __rte_cache_aligned;
 367         struct worker_params *wp = arg;
 368         struct rte_distributor *d = wp->dist;
 369         unsigned int num;
 370         unsigned int zero_id = 0;
 371         unsigned int zero_unset;
 372         const unsigned int id = __atomic_fetch_add(&worker_idx, 1,
 373                         __ATOMIC_RELAXED);
 374
 375         num = rte_distributor_get_pkt(d, id, buf, NULL, 0);
 376
 377         if (num > 0) {
 378                 zero_unset = RTE_MAX_LCORE;
 379                 __atomic_compare_exchange_n(&zero_idx, &zero_unset, id,
 380                         false, __ATOMIC_ACQ_REL, __ATOMIC_ACQUIRE);
 381         }
 382         zero_id = __atomic_load_n(&zero_idx, __ATOMIC_ACQUIRE);
 383
 384         /* wait for quit single globally, or for worker zero, wait
 385          * for zero_quit */
 386         while (!quit && !(id == zero_id && zero_quit)) {
 387                 __atomic_fetch_add(&worker_stats[id].handled_packets, num,
 388                                 __ATOMIC_RELAXED);
 389                 num = rte_distributor_get_pkt(d, id, buf, NULL, 0);
 390
 391                 if (num > 0) {
 392                         zero_unset = RTE_MAX_LCORE;
 393                         __atomic_compare_exchange_n(&zero_idx, &zero_unset, id,
 394                                 false, __ATOMIC_ACQ_REL, __ATOMIC_ACQUIRE);
 395                 }
 396                 zero_id = __atomic_load_n(&zero_idx, __ATOMIC_ACQUIRE);
 397         }
 398
 399         __atomic_fetch_add(&worker_stats[id].handled_packets, num,
 400                         __ATOMIC_RELAXED);
 401         if (id == zero_id) {
 402                 rte_distributor_return_pkt(d, id, NULL, 0);
 403
 404                 /* for worker zero, allow it to restart to pick up last packet
 405                  * when all workers are shutting down.
 406                  */
 407                 __atomic_store_n(&zero_sleep, 1, __ATOMIC_RELEASE);
 408                 while (zero_quit)
 409                         usleep(100);
 410                 __atomic_store_n(&zero_sleep, 0, __ATOMIC_RELEASE);
 411
 412                 num = rte_distributor_get_pkt(d, id, buf, NULL, 0);
 413
 414                 while (!quit) {
 415                         __atomic_fetch_add(&worker_stats[id].handled_packets,
 416                                         num, __ATOMIC_RELAXED);
 417                         num = rte_distributor_get_pkt(d, id, buf, NULL, 0);
 418                 }
 419         }
 420         rte_distributor_return_pkt(d, id, buf, num);
 421         return 0;
 422 }
 423
 424
 425 /* Perform a sanity test of the distributor with a large number of packets,
 426  * where we allocate a new set of mbufs for each burst. The workers then
 427  * free the mbufs. This ensures that we don't have any packet leaks in the
 428  * library.
 429  */
 430 static int
 431 sanity_test_with_worker_shutdown(struct worker_params *wp,
 432                 struct rte_mempool *p)
 433 {
 434         struct rte_distributor *d = wp->dist;
 435         struct rte_mbuf *bufs[BURST];
 436         struct rte_mbuf *bufs2[BURST];
 437         unsigned int i;
 438         unsigned int failed = 0;
 439         unsigned int processed = 0;
 440
 441         printf("=== Sanity test of worker shutdown ===\n");
 442
 443         clear_packet_count();
 444
 445         if (rte_mempool_get_bulk(p, (void *)bufs, BURST) != 0) {
 446                 printf("line %d: Error getting mbufs from pool\n", __LINE__);
 447                 return -1;
 448         }
 449
 450         /*
 451          * Now set all hash values in all buffers to same value so all
 452          * pkts go to the one worker thread
 453          */
 454         for (i = 0; i < BURST; i++)
 455                 bufs[i]->hash.usr = 1;
 456
 457         processed = 0;
 458         while (processed < BURST)
 459                 processed += rte_distributor_process(d, &bufs[processed],
 460                         BURST - processed);
 461         rte_distributor_flush(d);
 462
 463         /* at this point, we will have processed some packets and have a full
 464          * backlog for the other ones at worker 0.
 465          */
 466
 467         /* get more buffers to queue up, again setting them to the same flow */
 468         if (rte_mempool_get_bulk(p, (void *)bufs2, BURST) != 0) {
 469                 printf("line %d: Error getting mbufs from pool\n", __LINE__);
 470                 rte_mempool_put_bulk(p, (void *)bufs, BURST);
 471                 return -1;
 472         }
 473         for (i = 0; i < BURST; i++)
 474                 bufs2[i]->hash.usr = 1;
 475
 476         /* get worker zero to quit */
 477         zero_quit = 1;
 478         rte_distributor_process(d, bufs2, BURST);
 479
 480         /* flush the distributor */
 481         rte_distributor_flush(d);
 482         while (!__atomic_load_n(&zero_sleep, __ATOMIC_ACQUIRE))
 483                 rte_distributor_flush(d);
 484
 485         zero_quit = 0;
 486         while (__atomic_load_n(&zero_sleep, __ATOMIC_ACQUIRE))
 487                 rte_delay_us(100);
 488
 489         for (i = 0; i < rte_lcore_count() - 1; i++)
 490                 printf("Worker %u handled %u packets\n", i,
 491                         __atomic_load_n(&worker_stats[i].handled_packets,
 492                                         __ATOMIC_RELAXED));
 493
 494         if (total_packet_count() != BURST * 2) {
 495                 printf("Line %d: Error, not all packets flushed. "
 496                                 "Expected %u, got %u\n",
 497                                 __LINE__, BURST * 2, total_packet_count());
 498                 failed = 1;
 499         }
 500
 501         rte_mempool_put_bulk(p, (void *)bufs, BURST);
 502         rte_mempool_put_bulk(p, (void *)bufs2, BURST);
 503
 504         if (failed)
 505                 return -1;
 506
 507         printf("Sanity test with worker shutdown passed\n\n");
 508         return 0;
 509 }
 510
 511 /* Test that the flush function is able to move packets between workers when
 512  * one worker shuts down..
 513  */
 514 static int
 515 test_flush_with_worker_shutdown(struct worker_params *wp,
 516                 struct rte_mempool *p)
 517 {
 518         struct rte_distributor *d = wp->dist;
 519         struct rte_mbuf *bufs[BURST];
 520         unsigned int i;
 521         unsigned int failed = 0;
 522         unsigned int processed;
 523
 524         printf("=== Test flush fn with worker shutdown (%s) ===\n", wp->name);
 525
 526         clear_packet_count();
 527         if (rte_mempool_get_bulk(p, (void *)bufs, BURST) != 0) {
 528                 printf("line %d: Error getting mbufs from pool\n", __LINE__);
 529                 return -1;
 530         }
 531
 532         /* now set all hash values in all buffers to zero, so all pkts go to the
 533          * one worker thread */
 534         for (i = 0; i < BURST; i++)
 535                 bufs[i]->hash.usr = 0;
 536
 537         processed = 0;
 538         while (processed < BURST)
 539                 processed += rte_distributor_process(d, &bufs[processed],
 540                         BURST - processed);
 541         /* at this point, we will have processed some packets and have a full
 542          * backlog for the other ones at worker 0.
 543          */
 544
 545         /* get worker zero to quit */
 546         zero_quit = 1;
 547
 548         /* flush the distributor */
 549         rte_distributor_flush(d);
 550
 551         while (!__atomic_load_n(&zero_sleep, __ATOMIC_ACQUIRE))
 552                 rte_distributor_flush(d);
 553
 554         zero_quit = 0;
 555
 556         while (__atomic_load_n(&zero_sleep, __ATOMIC_ACQUIRE))
 557                 rte_delay_us(100);
 558
 559         for (i = 0; i < rte_lcore_count() - 1; i++)
 560                 printf("Worker %u handled %u packets\n", i,
 561                         __atomic_load_n(&worker_stats[i].handled_packets,
 562                                         __ATOMIC_RELAXED));
 563
 564         if (total_packet_count() != BURST) {
 565                 printf("Line %d: Error, not all packets flushed. "
 566                                 "Expected %u, got %u\n",
 567                                 __LINE__, BURST, total_packet_count());
 568                 failed = 1;
 569         }
 570
 571         rte_mempool_put_bulk(p, (void *)bufs, BURST);
 572
 573         if (failed)
 574                 return -1;
 575
 576         printf("Flush test with worker shutdown passed\n\n");
 577         return 0;
 578 }
 579
 580 static int
 581 handle_and_mark_work(void *arg)
 582 {
 583         struct rte_mbuf *buf[8] __rte_cache_aligned;
 584         struct worker_params *wp = arg;
 585         struct rte_distributor *db = wp->dist;
 586         unsigned int num, i;
 587         unsigned int id = __atomic_fetch_add(&worker_idx, 1, __ATOMIC_RELAXED);
 588         num = rte_distributor_get_pkt(db, id, buf, NULL, 0);
 589         while (!quit) {
 590                 __atomic_fetch_add(&worker_stats[id].handled_packets, num,
 591                                 __ATOMIC_RELAXED);
 592                 for (i = 0; i < num; i++)
 593                         *seq_field(buf[i]) += id + 1;
 594                 num = rte_distributor_get_pkt(db, id,
 595                                 buf, buf, num);
 596         }
 597         __atomic_fetch_add(&worker_stats[id].handled_packets, num,
 598                         __ATOMIC_RELAXED);
 599         rte_distributor_return_pkt(db, id, buf, num);
 600         return 0;
 601 }
 602
 603 /* sanity_mark_test sends packets to workers which mark them.
 604  * Every packet has also encoded sequence number.
 605  * The returned packets are sorted and verified if they were handled
 606  * by proper workers.
 607  */
 608 static int
 609 sanity_mark_test(struct worker_params *wp, struct rte_mempool *p)
 610 {
 611         const unsigned int buf_count = 24;
 612         const unsigned int burst = 8;
 613         const unsigned int shift = 12;
 614         const unsigned int seq_shift = 10;
 615
 616         struct rte_distributor *db = wp->dist;
 617         struct rte_mbuf *bufs[buf_count];
 618         struct rte_mbuf *returns[buf_count];
 619         unsigned int i, count, id;
 620         unsigned int sorted[buf_count], seq;
 621         unsigned int failed = 0;
 622         unsigned int processed;
 623
 624         printf("=== Marked packets test ===\n");
 625         clear_packet_count();
 626         if (rte_mempool_get_bulk(p, (void *)bufs, buf_count) != 0) {
 627                 printf("line %d: Error getting mbufs from pool\n", __LINE__);
 628                 return -1;
 629         }
 630
 631         /* bufs' hashes will be like these below, but shifted left.
 632          * The shifting is for avoiding collisions with backlogs
 633          * and in-flight tags left by previous tests.
 634          * [1, 1, 1, 1, 1, 1, 1, 1
 635          *  1, 1, 1, 1, 2, 2, 2, 2
 636          *  2, 2, 2, 2, 1, 1, 1, 1]
 637          */
 638         for (i = 0; i < burst; i++) {
 639                 bufs[0 * burst + i]->hash.usr = 1 << shift;
 640                 bufs[1 * burst + i]->hash.usr = ((i < burst / 2) ? 1 : 2)
 641                         << shift;
 642                 bufs[2 * burst + i]->hash.usr = ((i < burst / 2) ? 2 : 1)
 643                         << shift;
 644         }
 645         /* Assign a sequence number to each packet. The sequence is shifted,
 646          * so that lower bits will hold mark from worker.
 647          */
 648         for (i = 0; i < buf_count; i++)
 649                 *seq_field(bufs[i]) = i << seq_shift;
 650
 651         count = 0;
 652         for (i = 0; i < buf_count/burst; i++) {
 653                 processed = 0;
 654                 while (processed < burst)
 655                         processed += rte_distributor_process(db,
 656                                 &bufs[i * burst + processed],
 657                                 burst - processed);
 658                 count += rte_distributor_returned_pkts(db, &returns[count],
 659                         buf_count - count);
 660         }
 661
 662         do {
 663                 rte_distributor_flush(db);
 664                 count += rte_distributor_returned_pkts(db, &returns[count],
 665                         buf_count - count);
 666         } while (count < buf_count);
 667
 668         for (i = 0; i < rte_lcore_count() - 1; i++)
 669                 printf("Worker %u handled %u packets\n", i,
 670                         __atomic_load_n(&worker_stats[i].handled_packets,
 671                                         __ATOMIC_RELAXED));
 672
 673         /* Sort returned packets by sent order (sequence numbers). */
 674         for (i = 0; i < buf_count; i++) {
 675                 seq = *seq_field(returns[i]) >> seq_shift;
 676                 id = *seq_field(returns[i]) - (seq << seq_shift);
 677                 sorted[seq] = id;
 678         }
 679
 680         /* Verify that packets [0-11] and [20-23] were processed
 681          * by the same worker
 682          */
 683         for (i = 1; i < 12; i++) {
 684                 if (sorted[i] != sorted[0]) {
 685                         printf("Packet number %u processed by worker %u,"
 686                                 " but should be processes by worker %u\n",
 687                                 i, sorted[i], sorted[0]);
 688                         failed = 1;
 689                 }
 690         }
 691         for (i = 20; i < 24; i++) {
 692                 if (sorted[i] != sorted[0]) {
 693                         printf("Packet number %u processed by worker %u,"
 694                                 " but should be processes by worker %u\n",
 695                                 i, sorted[i], sorted[0]);
 696                         failed = 1;
 697                 }
 698         }
 699         /* And verify that packets [12-19] were processed
 700          * by the another worker
 701          */
 702         for (i = 13; i < 20; i++) {
 703                 if (sorted[i] != sorted[12]) {
 704                         printf("Packet number %u processed by worker %u,"
 705                                 " but should be processes by worker %u\n",
 706                                 i, sorted[i], sorted[12]);
 707                         failed = 1;
 708                 }
 709         }
 710
 711         rte_mempool_put_bulk(p, (void *)bufs, buf_count);
 712
 713         if (failed)
 714                 return -1;
 715
 716         printf("Marked packets test passed\n");
 717         return 0;
 718 }
 719
 720 static
 721 int test_error_distributor_create_name(void)
 722 {
 723         struct rte_distributor *d = NULL;
 724         struct rte_distributor *db = NULL;
 725         char *name = NULL;
 726
 727         d = rte_distributor_create(name, rte_socket_id(),
 728                         rte_lcore_count() - 1,
 729                         RTE_DIST_ALG_SINGLE);
 730         if (d != NULL || rte_errno != EINVAL) {
 731                 printf("ERROR: No error on create() with NULL name param\n");
 732                 return -1;
 733         }
 734
 735         db = rte_distributor_create(name, rte_socket_id(),
 736                         rte_lcore_count() - 1,
 737                         RTE_DIST_ALG_BURST);
 738         if (db != NULL || rte_errno != EINVAL) {
 739                 printf("ERROR: No error on create() with NULL param\n");
 740                 return -1;
 741         }
 742
 743         return 0;
 744 }
 745
 746
 747 static
 748 int test_error_distributor_create_numworkers(void)
 749 {
 750         struct rte_distributor *ds = NULL;
 751         struct rte_distributor *db = NULL;
 752
 753         ds = rte_distributor_create("test_numworkers", rte_socket_id(),
 754                         RTE_MAX_LCORE + 10,
 755                         RTE_DIST_ALG_SINGLE);
 756         if (ds != NULL || rte_errno != EINVAL) {
 757                 printf("ERROR: No error on create() with num_workers > MAX\n");
 758                 return -1;
 759         }
 760
 761         db = rte_distributor_create("test_numworkers", rte_socket_id(),
 762                         RTE_MAX_LCORE + 10,
 763                         RTE_DIST_ALG_BURST);
 764         if (db != NULL || rte_errno != EINVAL) {
 765                 printf("ERROR: No error on create() num_workers > MAX\n");
 766                 return -1;
 767         }
 768
 769         return 0;
 770 }
 771
 772
 773 /* Useful function which ensures that all worker functions terminate */
 774 static void
 775 quit_workers(struct worker_params *wp, struct rte_mempool *p)
 776 {
 777         struct rte_distributor *d = wp->dist;
 778         const unsigned num_workers = rte_lcore_count() - 1;
 779         unsigned i;
 780         struct rte_mbuf *bufs[RTE_MAX_LCORE];
 781         struct rte_mbuf *returns[RTE_MAX_LCORE];
 782         if (rte_mempool_get_bulk(p, (void *)bufs, num_workers) != 0) {
 783                 printf("line %d: Error getting mbufs from pool\n", __LINE__);
 784                 return;
 785         }
 786
 787         zero_quit = 0;
 788         quit = 1;
 789         for (i = 0; i < num_workers; i++) {
 790                 bufs[i]->hash.usr = i << 1;
 791                 rte_distributor_process(d, &bufs[i], 1);
 792         }
 793
 794         rte_distributor_process(d, NULL, 0);
 795         rte_distributor_flush(d);
 796         rte_eal_mp_wait_lcore();
 797
 798         while (rte_distributor_returned_pkts(d, returns, RTE_MAX_LCORE))
 799                 ;
 800
 801         rte_distributor_clear_returns(d);
 802         rte_mempool_put_bulk(p, (void *)bufs, num_workers);
 803
 804         quit = 0;
 805         worker_idx = 0;
 806         zero_idx = RTE_MAX_LCORE;
 807         zero_quit = 0;
 808         zero_sleep = 0;
 809 }
 810
 811 static int
 812 test_distributor(void)
 813 {
 814         static struct rte_distributor *ds;
 815         static struct rte_distributor *db;
 816         static struct rte_distributor *dist[2];
 817         static struct rte_mempool *p;
 818         int i;
 819
 820         static const struct rte_mbuf_dynfield seq_dynfield_desc = {
 821                 .name = "test_distributor_dynfield_seq",
 822                 .size = sizeof(seq_dynfield_t),
 823                 .align = __alignof__(seq_dynfield_t),
 824         };
 825         seq_dynfield_offset =
 826                 rte_mbuf_dynfield_register(&seq_dynfield_desc);
 827         if (seq_dynfield_offset < 0) {
 828                 printf("Error registering mbuf field\n");
 829                 return TEST_FAILED;
 830         }
 831
 832         if (rte_lcore_count() < 2) {
 833                 printf("Not enough cores for distributor_autotest, expecting at least 2\n");
 834                 return TEST_SKIPPED;
 835         }
 836
 837         if (db == NULL) {
 838                 db = rte_distributor_create("Test_dist_burst", rte_socket_id(),
 839                                 rte_lcore_count() - 1,
 840                                 RTE_DIST_ALG_BURST);
 841                 if (db == NULL) {
 842                         printf("Error creating burst distributor\n");
 843                         return -1;
 844                 }
 845         } else {
 846                 rte_distributor_flush(db);
 847                 rte_distributor_clear_returns(db);
 848         }
 849
 850         if (ds == NULL) {
 851                 ds = rte_distributor_create("Test_dist_single",
 852                                 rte_socket_id(),
 853                                 rte_lcore_count() - 1,
 854                         RTE_DIST_ALG_SINGLE);
 855                 if (ds == NULL) {
 856                         printf("Error creating single distributor\n");
 857                         return -1;
 858                 }
 859         } else {
 860                 rte_distributor_flush(ds);
 861                 rte_distributor_clear_returns(ds);
 862         }
 863
 864         const unsigned nb_bufs = (511 * rte_lcore_count()) < BIG_BATCH ?
 865                         (BIG_BATCH * 2) - 1 : (511 * rte_lcore_count());
 866         if (p == NULL) {
 867                 p = rte_pktmbuf_pool_create("DT_MBUF_POOL", nb_bufs, BURST,
 868                         0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
 869                 if (p == NULL) {
 870                         printf("Error creating mempool\n");
 871                         return -1;
 872                 }
 873         }
 874
 875         dist[0] = ds;
 876         dist[1] = db;
 877
 878         for (i = 0; i < 2; i++) {
 879
 880                 worker_params.dist = dist[i];
 881                 if (i)
 882                         strlcpy(worker_params.name, "burst",
 883                                         sizeof(worker_params.name));
 884                 else
 885                         strlcpy(worker_params.name, "single",
 886                                         sizeof(worker_params.name));
 887
 888                 rte_eal_mp_remote_launch(handle_work,
 889                                 &worker_params, SKIP_MAIN);
 890                 if (sanity_test(&worker_params, p) < 0)
 891                         goto err;
 892                 quit_workers(&worker_params, p);
 893
 894                 rte_eal_mp_remote_launch(handle_work_with_free_mbufs,
 895                                 &worker_params, SKIP_MAIN);
 896                 if (sanity_test_with_mbuf_alloc(&worker_params, p) < 0)
 897                         goto err;
 898                 quit_workers(&worker_params, p);
 899
 900                 if (rte_lcore_count() > 2) {
 901                         rte_eal_mp_remote_launch(handle_work_for_shutdown_test,
 902                                         &worker_params,
 903                                         SKIP_MAIN);
 904                         if (sanity_test_with_worker_shutdown(&worker_params,
 905                                         p) < 0)
 906                                 goto err;
 907                         quit_workers(&worker_params, p);
 908
 909                         rte_eal_mp_remote_launch(handle_work_for_shutdown_test,
 910                                         &worker_params,
 911                                         SKIP_MAIN);
 912                         if (test_flush_with_worker_shutdown(&worker_params,
 913                                         p) < 0)
 914                                 goto err;
 915                         quit_workers(&worker_params, p);
 916
 917                         rte_eal_mp_remote_launch(handle_and_mark_work,
 918                                         &worker_params, SKIP_MAIN);
 919                         if (sanity_mark_test(&worker_params, p) < 0)
 920                                 goto err;
 921                         quit_workers(&worker_params, p);
 922
 923                 } else {
 924                         printf("Too few cores to run worker shutdown test\n");
 925                 }
 926
 927         }
 928
 929         if (test_error_distributor_create_numworkers() == -1 ||
 930                         test_error_distributor_create_name() == -1) {
 931                 printf("rte_distributor_create parameter check tests failed");
 932                 return -1;
 933         }
 934
 935         return 0;
 936
 937 err:
 938         quit_workers(&worker_params, p);
 939         return -1;
 940 }
 941
 942 REGISTER_TEST_COMMAND(distributor_autotest, test_distributor);