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                 rte_mempool_put_bulk(p, (void *)bufs, BURST);
 138                 return -1;
 139         }
 140
 141         for (i = 0; i < rte_lcore_count() - 1; i++)
 142                 printf("Worker %u handled %u packets\n", i,
 143                         __atomic_load_n(&worker_stats[i].handled_packets,
 144                                         __ATOMIC_RELAXED));
 145         printf("Sanity test with all zero hashes done.\n");
 146
 147         /* pick two flows and check they go correctly */
 148         if (rte_lcore_count() >= 3) {
 149                 clear_packet_count();
 150                 for (i = 0; i < BURST; i++)
 151                         bufs[i]->hash.usr = (i & 1) << 8;
 152
 153                 rte_distributor_process(db, bufs, BURST);
 154                 count = 0;
 155                 do {
 156                         rte_distributor_flush(db);
 157                         count += rte_distributor_returned_pkts(db,
 158                                         returns, BURST*2);
 159                 } while (count < BURST);
 160                 if (total_packet_count() != BURST) {
 161                         printf("Line %d: Error, not all packets flushed. "
 162                                         "Expected %u, got %u\n",
 163                                         __LINE__, BURST, total_packet_count());
 164                         rte_mempool_put_bulk(p, (void *)bufs, BURST);
 165                         return -1;
 166                 }
 167
 168                 for (i = 0; i < rte_lcore_count() - 1; i++)
 169                         printf("Worker %u handled %u packets\n", i,
 170                                 __atomic_load_n(
 171                                         &worker_stats[i].handled_packets,
 172                                         __ATOMIC_RELAXED));
 173                 printf("Sanity test with two hash values done\n");
 174         }
 175
 176         /* give a different hash value to each packet,
 177          * so load gets distributed */
 178         clear_packet_count();
 179         for (i = 0; i < BURST; i++)
 180                 bufs[i]->hash.usr = i+1;
 181
 182         rte_distributor_process(db, bufs, BURST);
 183         count = 0;
 184         do {
 185                 rte_distributor_flush(db);
 186                 count += rte_distributor_returned_pkts(db,
 187                                 returns, BURST*2);
 188         } while (count < BURST);
 189         if (total_packet_count() != BURST) {
 190                 printf("Line %d: Error, not all packets flushed. "
 191                                 "Expected %u, got %u\n",
 192                                 __LINE__, BURST, total_packet_count());
 193                 rte_mempool_put_bulk(p, (void *)bufs, BURST);
 194                 return -1;
 195         }
 196
 197         for (i = 0; i < rte_lcore_count() - 1; i++)
 198                 printf("Worker %u handled %u packets\n", i,
 199                         __atomic_load_n(&worker_stats[i].handled_packets,
 200                                         __ATOMIC_RELAXED));
 201         printf("Sanity test with non-zero hashes done\n");
 202
 203         rte_mempool_put_bulk(p, (void *)bufs, BURST);
 204
 205         /* sanity test with BIG_BATCH packets to ensure they all arrived back
 206          * from the returned packets function */
 207         clear_packet_count();
 208         struct rte_mbuf *many_bufs[BIG_BATCH], *return_bufs[BIG_BATCH];
 209         unsigned num_returned = 0;
 210
 211         /* flush out any remaining packets */
 212         rte_distributor_flush(db);
 213         rte_distributor_clear_returns(db);
 214
 215         if (rte_mempool_get_bulk(p, (void *)many_bufs, BIG_BATCH) != 0) {
 216                 printf("line %d: Error getting mbufs from pool\n", __LINE__);
 217                 return -1;
 218         }
 219         for (i = 0; i < BIG_BATCH; i++)
 220                 many_bufs[i]->hash.usr = i << 2;
 221
 222         printf("=== testing big burst (%s) ===\n", wp->name);
 223         for (i = 0; i < BIG_BATCH/BURST; i++) {
 224                 rte_distributor_process(db,
 225                                 &many_bufs[i*BURST], BURST);
 226                 count = rte_distributor_returned_pkts(db,
 227                                 &return_bufs[num_returned],
 228                                 BIG_BATCH - num_returned);
 229                 num_returned += count;
 230         }
 231         rte_distributor_flush(db);
 232         count = rte_distributor_returned_pkts(db,
 233                 &return_bufs[num_returned],
 234                         BIG_BATCH - num_returned);
 235         num_returned += count;
 236         retries = 0;
 237         do {
 238                 rte_distributor_flush(db);
 239                 count = rte_distributor_returned_pkts(db,
 240                                 &return_bufs[num_returned],
 241                                 BIG_BATCH - num_returned);
 242                 num_returned += count;
 243                 retries++;
 244         } while ((num_returned < BIG_BATCH) && (retries < 100));
 245
 246         if (num_returned != BIG_BATCH) {
 247                 printf("line %d: Missing packets, expected %d\n",
 248                                 __LINE__, num_returned);
 249                 rte_mempool_put_bulk(p, (void *)many_bufs, BIG_BATCH);
 250                 return -1;
 251         }
 252
 253         /* big check -  make sure all packets made it back!! */
 254         for (i = 0; i < BIG_BATCH; i++) {
 255                 unsigned j;
 256                 struct rte_mbuf *src = many_bufs[i];
 257                 for (j = 0; j < BIG_BATCH; j++) {
 258                         if (return_bufs[j] == src)
 259                                 break;
 260                 }
 261
 262                 if (j == BIG_BATCH) {
 263                         printf("Error: could not find source packet #%u\n", i);
 264                         rte_mempool_put_bulk(p, (void *)many_bufs, BIG_BATCH);
 265                         return -1;
 266                 }
 267         }
 268         printf("Sanity test of returned packets done\n");
 269
 270         rte_mempool_put_bulk(p, (void *)many_bufs, BIG_BATCH);
 271
 272         printf("\n");
 273         return 0;
 274 }
 275
 276
 277 /* to test that the distributor does not lose packets, we use this worker
 278  * function which frees mbufs when it gets them. The distributor thread does
 279  * the mbuf allocation. If distributor drops packets we'll eventually run out
 280  * of mbufs.
 281  */
 282 static int
 283 handle_work_with_free_mbufs(void *arg)
 284 {
 285         struct rte_mbuf *buf[8] __rte_cache_aligned;
 286         struct worker_params *wp = arg;
 287         struct rte_distributor *d = wp->dist;
 288         unsigned int i;
 289         unsigned int num;
 290         unsigned int id = __atomic_fetch_add(&worker_idx, 1, __ATOMIC_RELAXED);
 291
 292         num = rte_distributor_get_pkt(d, id, buf, NULL, 0);
 293         while (!quit) {
 294                 __atomic_fetch_add(&worker_stats[id].handled_packets, num,
 295                                 __ATOMIC_RELAXED);
 296                 for (i = 0; i < num; i++)
 297                         rte_pktmbuf_free(buf[i]);
 298                 num = rte_distributor_get_pkt(d, id, buf, NULL, 0);
 299         }
 300         __atomic_fetch_add(&worker_stats[id].handled_packets, num,
 301                         __ATOMIC_RELAXED);
 302         rte_distributor_return_pkt(d, id, buf, num);
 303         return 0;
 304 }
 305
 306 /* Perform a sanity test of the distributor with a large number of packets,
 307  * where we allocate a new set of mbufs for each burst. The workers then
 308  * free the mbufs. This ensures that we don't have any packet leaks in the
 309  * library.
 310  */
 311 static int
 312 sanity_test_with_mbuf_alloc(struct worker_params *wp, struct rte_mempool *p)
 313 {
 314         struct rte_distributor *d = wp->dist;
 315         unsigned i;
 316         struct rte_mbuf *bufs[BURST];
 317         unsigned int processed;
 318
 319         printf("=== Sanity test with mbuf alloc/free (%s) ===\n", wp->name);
 320
 321         clear_packet_count();
 322         for (i = 0; i < ((1<<ITER_POWER)); i += BURST) {
 323                 unsigned j;
 324                 while (rte_mempool_get_bulk(p, (void *)bufs, BURST) < 0)
 325                         rte_distributor_process(d, NULL, 0);
 326                 for (j = 0; j < BURST; j++) {
 327                         bufs[j]->hash.usr = (i+j) << 1;
 328                 }
 329
 330                 processed = 0;
 331                 while (processed < BURST)
 332                         processed += rte_distributor_process(d,
 333                                 &bufs[processed], BURST - processed);
 334         }
 335
 336         rte_distributor_flush(d);
 337
 338         rte_delay_us(10000);
 339
 340         if (total_packet_count() < (1<<ITER_POWER)) {
 341                 printf("Line %u: Packet count is incorrect, %u, expected %u\n",
 342                                 __LINE__, total_packet_count(),
 343                                 (1<<ITER_POWER));
 344                 return -1;
 345         }
 346
 347         printf("Sanity test with mbuf alloc/free passed\n\n");
 348         return 0;
 349 }
 350
 351 static int
 352 handle_work_for_shutdown_test(void *arg)
 353 {
 354         struct rte_mbuf *buf[8] __rte_cache_aligned;
 355         struct worker_params *wp = arg;
 356         struct rte_distributor *d = wp->dist;
 357         unsigned int num;
 358         unsigned int zero_id = 0;
 359         unsigned int zero_unset;
 360         const unsigned int id = __atomic_fetch_add(&worker_idx, 1,
 361                         __ATOMIC_RELAXED);
 362
 363         num = rte_distributor_get_pkt(d, id, buf, NULL, 0);
 364
 365         if (num > 0) {
 366                 zero_unset = RTE_MAX_LCORE;
 367                 __atomic_compare_exchange_n(&zero_idx, &zero_unset, id,
 368                         false, __ATOMIC_ACQ_REL, __ATOMIC_ACQUIRE);
 369         }
 370         zero_id = __atomic_load_n(&zero_idx, __ATOMIC_ACQUIRE);
 371
 372         /* wait for quit single globally, or for worker zero, wait
 373          * for zero_quit */
 374         while (!quit && !(id == zero_id && zero_quit)) {
 375                 __atomic_fetch_add(&worker_stats[id].handled_packets, num,
 376                                 __ATOMIC_RELAXED);
 377                 num = rte_distributor_get_pkt(d, id, buf, NULL, 0);
 378
 379                 if (num > 0) {
 380                         zero_unset = RTE_MAX_LCORE;
 381                         __atomic_compare_exchange_n(&zero_idx, &zero_unset, id,
 382                                 false, __ATOMIC_ACQ_REL, __ATOMIC_ACQUIRE);
 383                 }
 384                 zero_id = __atomic_load_n(&zero_idx, __ATOMIC_ACQUIRE);
 385         }
 386
 387         __atomic_fetch_add(&worker_stats[id].handled_packets, num,
 388                         __ATOMIC_RELAXED);
 389         if (id == zero_id) {
 390                 rte_distributor_return_pkt(d, id, NULL, 0);
 391
 392                 /* for worker zero, allow it to restart to pick up last packet
 393                  * when all workers are shutting down.
 394                  */
 395                 __atomic_store_n(&zero_sleep, 1, __ATOMIC_RELEASE);
 396                 while (zero_quit)
 397                         usleep(100);
 398                 __atomic_store_n(&zero_sleep, 0, __ATOMIC_RELEASE);
 399
 400                 num = rte_distributor_get_pkt(d, id, buf, NULL, 0);
 401
 402                 while (!quit) {
 403                         __atomic_fetch_add(&worker_stats[id].handled_packets,
 404                                         num, __ATOMIC_RELAXED);
 405                         num = rte_distributor_get_pkt(d, id, buf, NULL, 0);
 406                 }
 407         }
 408         rte_distributor_return_pkt(d, id, buf, num);
 409         return 0;
 410 }
 411
 412
 413 /* Perform a sanity test of the distributor with a large number of packets,
 414  * where we allocate a new set of mbufs for each burst. The workers then
 415  * free the mbufs. This ensures that we don't have any packet leaks in the
 416  * library.
 417  */
 418 static int
 419 sanity_test_with_worker_shutdown(struct worker_params *wp,
 420                 struct rte_mempool *p)
 421 {
 422         struct rte_distributor *d = wp->dist;
 423         struct rte_mbuf *bufs[BURST];
 424         struct rte_mbuf *bufs2[BURST];
 425         unsigned int i;
 426         unsigned int failed = 0;
 427         unsigned int processed = 0;
 428
 429         printf("=== Sanity test of worker shutdown ===\n");
 430
 431         clear_packet_count();
 432
 433         if (rte_mempool_get_bulk(p, (void *)bufs, BURST) != 0) {
 434                 printf("line %d: Error getting mbufs from pool\n", __LINE__);
 435                 return -1;
 436         }
 437
 438         /*
 439          * Now set all hash values in all buffers to same value so all
 440          * pkts go to the one worker thread
 441          */
 442         for (i = 0; i < BURST; i++)
 443                 bufs[i]->hash.usr = 1;
 444
 445         processed = 0;
 446         while (processed < BURST)
 447                 processed += rte_distributor_process(d, &bufs[processed],
 448                         BURST - processed);
 449         rte_distributor_flush(d);
 450
 451         /* at this point, we will have processed some packets and have a full
 452          * backlog for the other ones at worker 0.
 453          */
 454
 455         /* get more buffers to queue up, again setting them to the same flow */
 456         if (rte_mempool_get_bulk(p, (void *)bufs2, BURST) != 0) {
 457                 printf("line %d: Error getting mbufs from pool\n", __LINE__);
 458                 rte_mempool_put_bulk(p, (void *)bufs, BURST);
 459                 return -1;
 460         }
 461         for (i = 0; i < BURST; i++)
 462                 bufs2[i]->hash.usr = 1;
 463
 464         /* get worker zero to quit */
 465         zero_quit = 1;
 466         rte_distributor_process(d, bufs2, BURST);
 467
 468         /* flush the distributor */
 469         rte_distributor_flush(d);
 470         while (!__atomic_load_n(&zero_sleep, __ATOMIC_ACQUIRE))
 471                 rte_distributor_flush(d);
 472
 473         zero_quit = 0;
 474         while (__atomic_load_n(&zero_sleep, __ATOMIC_ACQUIRE))
 475                 rte_delay_us(100);
 476
 477         for (i = 0; i < rte_lcore_count() - 1; i++)
 478                 printf("Worker %u handled %u packets\n", i,
 479                         __atomic_load_n(&worker_stats[i].handled_packets,
 480                                         __ATOMIC_RELAXED));
 481
 482         if (total_packet_count() != BURST * 2) {
 483                 printf("Line %d: Error, not all packets flushed. "
 484                                 "Expected %u, got %u\n",
 485                                 __LINE__, BURST * 2, total_packet_count());
 486                 failed = 1;
 487         }
 488
 489         rte_mempool_put_bulk(p, (void *)bufs, BURST);
 490         rte_mempool_put_bulk(p, (void *)bufs2, BURST);
 491
 492         if (failed)
 493                 return -1;
 494
 495         printf("Sanity test with worker shutdown passed\n\n");
 496         return 0;
 497 }
 498
 499 /* Test that the flush function is able to move packets between workers when
 500  * one worker shuts down..
 501  */
 502 static int
 503 test_flush_with_worker_shutdown(struct worker_params *wp,
 504                 struct rte_mempool *p)
 505 {
 506         struct rte_distributor *d = wp->dist;
 507         struct rte_mbuf *bufs[BURST];
 508         unsigned int i;
 509         unsigned int failed = 0;
 510         unsigned int processed;
 511
 512         printf("=== Test flush fn with worker shutdown (%s) ===\n", wp->name);
 513
 514         clear_packet_count();
 515         if (rte_mempool_get_bulk(p, (void *)bufs, BURST) != 0) {
 516                 printf("line %d: Error getting mbufs from pool\n", __LINE__);
 517                 return -1;
 518         }
 519
 520         /* now set all hash values in all buffers to zero, so all pkts go to the
 521          * one worker thread */
 522         for (i = 0; i < BURST; i++)
 523                 bufs[i]->hash.usr = 0;
 524
 525         processed = 0;
 526         while (processed < BURST)
 527                 processed += rte_distributor_process(d, &bufs[processed],
 528                         BURST - processed);
 529         /* at this point, we will have processed some packets and have a full
 530          * backlog for the other ones at worker 0.
 531          */
 532
 533         /* get worker zero to quit */
 534         zero_quit = 1;
 535
 536         /* flush the distributor */
 537         rte_distributor_flush(d);
 538
 539         while (!__atomic_load_n(&zero_sleep, __ATOMIC_ACQUIRE))
 540                 rte_distributor_flush(d);
 541
 542         zero_quit = 0;
 543
 544         while (__atomic_load_n(&zero_sleep, __ATOMIC_ACQUIRE))
 545                 rte_delay_us(100);
 546
 547         for (i = 0; i < rte_lcore_count() - 1; i++)
 548                 printf("Worker %u handled %u packets\n", i,
 549                         __atomic_load_n(&worker_stats[i].handled_packets,
 550                                         __ATOMIC_RELAXED));
 551
 552         if (total_packet_count() != BURST) {
 553                 printf("Line %d: Error, not all packets flushed. "
 554                                 "Expected %u, got %u\n",
 555                                 __LINE__, BURST, total_packet_count());
 556                 failed = 1;
 557         }
 558
 559         rte_mempool_put_bulk(p, (void *)bufs, BURST);
 560
 561         if (failed)
 562                 return -1;
 563
 564         printf("Flush test with worker shutdown passed\n\n");
 565         return 0;
 566 }
 567
 568 static int
 569 handle_and_mark_work(void *arg)
 570 {
 571         struct rte_mbuf *buf[8] __rte_cache_aligned;
 572         struct worker_params *wp = arg;
 573         struct rte_distributor *db = wp->dist;
 574         unsigned int num, i;
 575         unsigned int id = __atomic_fetch_add(&worker_idx, 1, __ATOMIC_RELAXED);
 576         num = rte_distributor_get_pkt(db, id, buf, NULL, 0);
 577         while (!quit) {
 578                 __atomic_fetch_add(&worker_stats[id].handled_packets, num,
 579                                 __ATOMIC_RELAXED);
 580                 for (i = 0; i < num; i++)
 581                         buf[i]->udata64 += id + 1;
 582                 num = rte_distributor_get_pkt(db, id,
 583                                 buf, buf, num);
 584         }
 585         __atomic_fetch_add(&worker_stats[id].handled_packets, num,
 586                         __ATOMIC_RELAXED);
 587         rte_distributor_return_pkt(db, id, buf, num);
 588         return 0;
 589 }
 590
 591 /* sanity_mark_test sends packets to workers which mark them.
 592  * Every packet has also encoded sequence number.
 593  * The returned packets are sorted and verified if they were handled
 594  * by proper workers.
 595  */
 596 static int
 597 sanity_mark_test(struct worker_params *wp, struct rte_mempool *p)
 598 {
 599         const unsigned int buf_count = 24;
 600         const unsigned int burst = 8;
 601         const unsigned int shift = 12;
 602         const unsigned int seq_shift = 10;
 603
 604         struct rte_distributor *db = wp->dist;
 605         struct rte_mbuf *bufs[buf_count];
 606         struct rte_mbuf *returns[buf_count];
 607         unsigned int i, count, id;
 608         unsigned int sorted[buf_count], seq;
 609         unsigned int failed = 0;
 610         unsigned int processed;
 611
 612         printf("=== Marked packets test ===\n");
 613         clear_packet_count();
 614         if (rte_mempool_get_bulk(p, (void *)bufs, buf_count) != 0) {
 615                 printf("line %d: Error getting mbufs from pool\n", __LINE__);
 616                 return -1;
 617         }
 618
 619         /* bufs' hashes will be like these below, but shifted left.
 620          * The shifting is for avoiding collisions with backlogs
 621          * and in-flight tags left by previous tests.
 622          * [1, 1, 1, 1, 1, 1, 1, 1
 623          *  1, 1, 1, 1, 2, 2, 2, 2
 624          *  2, 2, 2, 2, 1, 1, 1, 1]
 625          */
 626         for (i = 0; i < burst; i++) {
 627                 bufs[0 * burst + i]->hash.usr = 1 << shift;
 628                 bufs[1 * burst + i]->hash.usr = ((i < burst / 2) ? 1 : 2)
 629                         << shift;
 630                 bufs[2 * burst + i]->hash.usr = ((i < burst / 2) ? 2 : 1)
 631                         << shift;
 632         }
 633         /* Assign a sequence number to each packet. The sequence is shifted,
 634          * so that lower bits of the udate64 will hold mark from worker.
 635          */
 636         for (i = 0; i < buf_count; i++)
 637                 bufs[i]->udata64 = i << seq_shift;
 638
 639         count = 0;
 640         for (i = 0; i < buf_count/burst; i++) {
 641                 processed = 0;
 642                 while (processed < burst)
 643                         processed += rte_distributor_process(db,
 644                                 &bufs[i * burst + processed],
 645                                 burst - processed);
 646                 count += rte_distributor_returned_pkts(db, &returns[count],
 647                         buf_count - count);
 648         }
 649
 650         do {
 651                 rte_distributor_flush(db);
 652                 count += rte_distributor_returned_pkts(db, &returns[count],
 653                         buf_count - count);
 654         } while (count < buf_count);
 655
 656         for (i = 0; i < rte_lcore_count() - 1; i++)
 657                 printf("Worker %u handled %u packets\n", i,
 658                         __atomic_load_n(&worker_stats[i].handled_packets,
 659                                         __ATOMIC_RELAXED));
 660
 661         /* Sort returned packets by sent order (sequence numbers). */
 662         for (i = 0; i < buf_count; i++) {
 663                 seq = returns[i]->udata64 >> seq_shift;
 664                 id = returns[i]->udata64 - (seq << seq_shift);
 665                 sorted[seq] = id;
 666         }
 667
 668         /* Verify that packets [0-11] and [20-23] were processed
 669          * by the same worker
 670          */
 671         for (i = 1; i < 12; i++) {
 672                 if (sorted[i] != sorted[0]) {
 673                         printf("Packet number %u processed by worker %u,"
 674                                 " but should be processes by worker %u\n",
 675                                 i, sorted[i], sorted[0]);
 676                         failed = 1;
 677                 }
 678         }
 679         for (i = 20; i < 24; i++) {
 680                 if (sorted[i] != sorted[0]) {
 681                         printf("Packet number %u processed by worker %u,"
 682                                 " but should be processes by worker %u\n",
 683                                 i, sorted[i], sorted[0]);
 684                         failed = 1;
 685                 }
 686         }
 687         /* And verify that packets [12-19] were processed
 688          * by the another worker
 689          */
 690         for (i = 13; i < 20; i++) {
 691                 if (sorted[i] != sorted[12]) {
 692                         printf("Packet number %u processed by worker %u,"
 693                                 " but should be processes by worker %u\n",
 694                                 i, sorted[i], sorted[12]);
 695                         failed = 1;
 696                 }
 697         }
 698
 699         rte_mempool_put_bulk(p, (void *)bufs, buf_count);
 700
 701         if (failed)
 702                 return -1;
 703
 704         printf("Marked packets test passed\n");
 705         return 0;
 706 }
 707
 708 static
 709 int test_error_distributor_create_name(void)
 710 {
 711         struct rte_distributor *d = NULL;
 712         struct rte_distributor *db = NULL;
 713         char *name = NULL;
 714
 715         d = rte_distributor_create(name, rte_socket_id(),
 716                         rte_lcore_count() - 1,
 717                         RTE_DIST_ALG_SINGLE);
 718         if (d != NULL || rte_errno != EINVAL) {
 719                 printf("ERROR: No error on create() with NULL name param\n");
 720                 return -1;
 721         }
 722
 723         db = rte_distributor_create(name, rte_socket_id(),
 724                         rte_lcore_count() - 1,
 725                         RTE_DIST_ALG_BURST);
 726         if (db != NULL || rte_errno != EINVAL) {
 727                 printf("ERROR: No error on create() with NULL param\n");
 728                 return -1;
 729         }
 730
 731         return 0;
 732 }
 733
 734
 735 static
 736 int test_error_distributor_create_numworkers(void)
 737 {
 738         struct rte_distributor *ds = NULL;
 739         struct rte_distributor *db = NULL;
 740
 741         ds = rte_distributor_create("test_numworkers", rte_socket_id(),
 742                         RTE_MAX_LCORE + 10,
 743                         RTE_DIST_ALG_SINGLE);
 744         if (ds != NULL || rte_errno != EINVAL) {
 745                 printf("ERROR: No error on create() with num_workers > MAX\n");
 746                 return -1;
 747         }
 748
 749         db = rte_distributor_create("test_numworkers", rte_socket_id(),
 750                         RTE_MAX_LCORE + 10,
 751                         RTE_DIST_ALG_BURST);
 752         if (db != NULL || rte_errno != EINVAL) {
 753                 printf("ERROR: No error on create() num_workers > MAX\n");
 754                 return -1;
 755         }
 756
 757         return 0;
 758 }
 759
 760
 761 /* Useful function which ensures that all worker functions terminate */
 762 static void
 763 quit_workers(struct worker_params *wp, struct rte_mempool *p)
 764 {
 765         struct rte_distributor *d = wp->dist;
 766         const unsigned num_workers = rte_lcore_count() - 1;
 767         unsigned i;
 768         struct rte_mbuf *bufs[RTE_MAX_LCORE];
 769         struct rte_mbuf *returns[RTE_MAX_LCORE];
 770         if (rte_mempool_get_bulk(p, (void *)bufs, num_workers) != 0) {
 771                 printf("line %d: Error getting mbufs from pool\n", __LINE__);
 772                 return;
 773         }
 774
 775         zero_quit = 0;
 776         quit = 1;
 777         for (i = 0; i < num_workers; i++) {
 778                 bufs[i]->hash.usr = i << 1;
 779                 rte_distributor_process(d, &bufs[i], 1);
 780         }
 781
 782         rte_distributor_process(d, NULL, 0);
 783         rte_distributor_flush(d);
 784         rte_eal_mp_wait_lcore();
 785
 786         while (rte_distributor_returned_pkts(d, returns, RTE_MAX_LCORE))
 787                 ;
 788
 789         rte_distributor_clear_returns(d);
 790         rte_mempool_put_bulk(p, (void *)bufs, num_workers);
 791
 792         quit = 0;
 793         worker_idx = 0;
 794         zero_idx = RTE_MAX_LCORE;
 795         zero_quit = 0;
 796         zero_sleep = 0;
 797 }
 798
 799 static int
 800 test_distributor(void)
 801 {
 802         static struct rte_distributor *ds;
 803         static struct rte_distributor *db;
 804         static struct rte_distributor *dist[2];
 805         static struct rte_mempool *p;
 806         int i;
 807
 808         if (rte_lcore_count() < 2) {
 809                 printf("Not enough cores for distributor_autotest, expecting at least 2\n");
 810                 return TEST_SKIPPED;
 811         }
 812
 813         if (db == NULL) {
 814                 db = rte_distributor_create("Test_dist_burst", rte_socket_id(),
 815                                 rte_lcore_count() - 1,
 816                                 RTE_DIST_ALG_BURST);
 817                 if (db == NULL) {
 818                         printf("Error creating burst distributor\n");
 819                         return -1;
 820                 }
 821         } else {
 822                 rte_distributor_flush(db);
 823                 rte_distributor_clear_returns(db);
 824         }
 825
 826         if (ds == NULL) {
 827                 ds = rte_distributor_create("Test_dist_single",
 828                                 rte_socket_id(),
 829                                 rte_lcore_count() - 1,
 830                         RTE_DIST_ALG_SINGLE);
 831                 if (ds == NULL) {
 832                         printf("Error creating single distributor\n");
 833                         return -1;
 834                 }
 835         } else {
 836                 rte_distributor_flush(ds);
 837                 rte_distributor_clear_returns(ds);
 838         }
 839
 840         const unsigned nb_bufs = (511 * rte_lcore_count()) < BIG_BATCH ?
 841                         (BIG_BATCH * 2) - 1 : (511 * rte_lcore_count());
 842         if (p == NULL) {
 843                 p = rte_pktmbuf_pool_create("DT_MBUF_POOL", nb_bufs, BURST,
 844                         0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
 845                 if (p == NULL) {
 846                         printf("Error creating mempool\n");
 847                         return -1;
 848                 }
 849         }
 850
 851         dist[0] = ds;
 852         dist[1] = db;
 853
 854         for (i = 0; i < 2; i++) {
 855
 856                 worker_params.dist = dist[i];
 857                 if (i)
 858                         strlcpy(worker_params.name, "burst",
 859                                         sizeof(worker_params.name));
 860                 else
 861                         strlcpy(worker_params.name, "single",
 862                                         sizeof(worker_params.name));
 863
 864                 rte_eal_mp_remote_launch(handle_work,
 865                                 &worker_params, SKIP_MASTER);
 866                 if (sanity_test(&worker_params, p) < 0)
 867                         goto err;
 868                 quit_workers(&worker_params, p);
 869
 870                 rte_eal_mp_remote_launch(handle_work_with_free_mbufs,
 871                                 &worker_params, SKIP_MASTER);
 872                 if (sanity_test_with_mbuf_alloc(&worker_params, p) < 0)
 873                         goto err;
 874                 quit_workers(&worker_params, p);
 875
 876                 if (rte_lcore_count() > 2) {
 877                         rte_eal_mp_remote_launch(handle_work_for_shutdown_test,
 878                                         &worker_params,
 879                                         SKIP_MASTER);
 880                         if (sanity_test_with_worker_shutdown(&worker_params,
 881                                         p) < 0)
 882                                 goto err;
 883                         quit_workers(&worker_params, p);
 884
 885                         rte_eal_mp_remote_launch(handle_work_for_shutdown_test,
 886                                         &worker_params,
 887                                         SKIP_MASTER);
 888                         if (test_flush_with_worker_shutdown(&worker_params,
 889                                         p) < 0)
 890                                 goto err;
 891                         quit_workers(&worker_params, p);
 892
 893                         rte_eal_mp_remote_launch(handle_and_mark_work,
 894                                         &worker_params, SKIP_MASTER);
 895                         if (sanity_mark_test(&worker_params, p) < 0)
 896                                 goto err;
 897                         quit_workers(&worker_params, p);
 898
 899                 } else {
 900                         printf("Too few cores to run worker shutdown test\n");
 901                 }
 902
 903         }
 904
 905         if (test_error_distributor_create_numworkers() == -1 ||
 906                         test_error_distributor_create_name() == -1) {
 907                 printf("rte_distributor_create parameter check tests failed");
 908                 return -1;
 909         }
 910
 911         return 0;
 912
 913 err:
 914         quit_workers(&worker_params, p);
 915         return -1;
 916 }
 917
 918 REGISTER_TEST_COMMAND(distributor_autotest, test_distributor);