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