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 <stdalign.h>
9 #include <string.h>
10 #include <rte_cycles.h>
11 #include <rte_errno.h>
12 #include <rte_mempool.h>
13 #include <rte_mbuf.h>
14 #include <rte_mbuf_dyn.h>
15
16 #ifdef RTE_EXEC_ENV_WINDOWS
17 static int
test_distributor(void)18 test_distributor(void)
19 {
20 printf("distributor not supported on Windows, skipping test\n");
21 return TEST_SKIPPED;
22 }
23
24 #else
25
26 #include <rte_distributor.h>
27 #include <rte_string_fns.h>
28
29 #define ITER_POWER 20 /* log 2 of how many iterations we do when timing. */
30 #define BURST 32
31 #define BIG_BATCH 1024
32
33 typedef uint32_t seq_dynfield_t;
34 static int seq_dynfield_offset = -1;
35
36 static inline seq_dynfield_t *
seq_field(struct rte_mbuf * mbuf)37 seq_field(struct rte_mbuf *mbuf)
38 {
39 return RTE_MBUF_DYNFIELD(mbuf, seq_dynfield_offset, seq_dynfield_t *);
40 }
41
42 struct worker_params {
43 char name[64];
44 struct rte_distributor *dist;
45 };
46
47 struct worker_params worker_params;
48
49 /* statics - all zero-initialized by default */
50 static volatile RTE_ATOMIC(int) quit; /**< general quit variable for all threads */
51 static volatile RTE_ATOMIC(int) zero_quit; /**< var for when we just want thr0 to quit*/
52 static volatile RTE_ATOMIC(int) zero_sleep; /**< thr0 has quit basic loop and is sleeping*/
53 static volatile RTE_ATOMIC(unsigned int) worker_idx;
54 static volatile RTE_ATOMIC(unsigned int) zero_idx;
55
56 struct __rte_cache_aligned worker_stats {
57 volatile RTE_ATOMIC(unsigned int) handled_packets;
58 };
59 struct worker_stats worker_stats[RTE_MAX_LCORE];
60
61 /* returns the total count of the number of packets handled by the worker
62 * functions given below.
63 */
64 static inline unsigned
total_packet_count(void)65 total_packet_count(void)
66 {
67 unsigned i, count = 0;
68 for (i = 0; i < worker_idx; i++)
69 count += rte_atomic_load_explicit(&worker_stats[i].handled_packets,
70 rte_memory_order_relaxed);
71 return count;
72 }
73
74 /* resets the packet counts for a new test */
75 static inline void
clear_packet_count(void)76 clear_packet_count(void)
77 {
78 unsigned int i;
79 for (i = 0; i < RTE_MAX_LCORE; i++)
80 rte_atomic_store_explicit(&worker_stats[i].handled_packets, 0,
81 rte_memory_order_relaxed);
82 }
83
84 /* this is the basic worker function for sanity test
85 * it does nothing but return packets and count them.
86 */
87 static int
handle_work(void * arg)88 handle_work(void *arg)
89 {
90 alignas(RTE_CACHE_LINE_SIZE) struct rte_mbuf *buf[8];
91 struct worker_params *wp = arg;
92 struct rte_distributor *db = wp->dist;
93 unsigned int num;
94 unsigned int id = rte_atomic_fetch_add_explicit(&worker_idx, 1, rte_memory_order_relaxed);
95
96 num = rte_distributor_get_pkt(db, id, buf, NULL, 0);
97 while (!quit) {
98 rte_atomic_fetch_add_explicit(&worker_stats[id].handled_packets, num,
99 rte_memory_order_relaxed);
100 num = rte_distributor_get_pkt(db, id,
101 buf, buf, num);
102 }
103 rte_atomic_fetch_add_explicit(&worker_stats[id].handled_packets, num,
104 rte_memory_order_relaxed);
105 rte_distributor_return_pkt(db, id, buf, num);
106 return 0;
107 }
108
109 /* do basic sanity testing of the distributor. This test tests the following:
110 * - send 32 packets through distributor with the same tag and ensure they
111 * all go to the one worker
112 * - send 32 packets through the distributor with two different tags and
113 * verify that they go equally to two different workers.
114 * - send 32 packets with different tags through the distributors and
115 * just verify we get all packets back.
116 * - send 1024 packets through the distributor, gathering the returned packets
117 * as we go. Then verify that we correctly got all 1024 pointers back again,
118 * not necessarily in the same order (as different flows).
119 */
120 static int
sanity_test(struct worker_params * wp,struct rte_mempool * p)121 sanity_test(struct worker_params *wp, struct rte_mempool *p)
122 {
123 struct rte_distributor *db = wp->dist;
124 struct rte_mbuf *bufs[BURST];
125 struct rte_mbuf *returns[BURST*2];
126 unsigned int i, count;
127 unsigned int retries;
128 unsigned int processed;
129
130 printf("=== Basic distributor sanity tests ===\n");
131 clear_packet_count();
132 if (rte_mempool_get_bulk(p, (void *)bufs, BURST) != 0) {
133 printf("line %d: Error getting mbufs from pool\n", __LINE__);
134 return -1;
135 }
136
137 /* now set all hash values in all buffers to zero, so all pkts go to the
138 * one worker thread */
139 for (i = 0; i < BURST; i++)
140 bufs[i]->hash.usr = 0;
141
142 processed = 0;
143 while (processed < BURST)
144 processed += rte_distributor_process(db, &bufs[processed],
145 BURST - processed);
146
147 count = 0;
148 do {
149
150 rte_distributor_flush(db);
151 count += rte_distributor_returned_pkts(db,
152 returns, BURST*2);
153 } while (count < BURST);
154
155 if (total_packet_count() != BURST) {
156 printf("Line %d: Error, not all packets flushed. "
157 "Expected %u, got %u\n",
158 __LINE__, BURST, total_packet_count());
159 rte_mempool_put_bulk(p, (void *)bufs, BURST);
160 return -1;
161 }
162
163 for (i = 0; i < rte_lcore_count() - 1; i++)
164 printf("Worker %u handled %u packets\n", i,
165 rte_atomic_load_explicit(&worker_stats[i].handled_packets,
166 rte_memory_order_relaxed));
167 printf("Sanity test with all zero hashes done.\n");
168
169 /* pick two flows and check they go correctly */
170 if (rte_lcore_count() >= 3) {
171 clear_packet_count();
172 for (i = 0; i < BURST; i++)
173 bufs[i]->hash.usr = (i & 1) << 8;
174
175 rte_distributor_process(db, bufs, BURST);
176 count = 0;
177 do {
178 rte_distributor_flush(db);
179 count += rte_distributor_returned_pkts(db,
180 returns, BURST*2);
181 } while (count < BURST);
182 if (total_packet_count() != BURST) {
183 printf("Line %d: Error, not all packets flushed. "
184 "Expected %u, got %u\n",
185 __LINE__, BURST, total_packet_count());
186 rte_mempool_put_bulk(p, (void *)bufs, BURST);
187 return -1;
188 }
189
190 for (i = 0; i < rte_lcore_count() - 1; i++)
191 printf("Worker %u handled %u packets\n", i,
192 rte_atomic_load_explicit(
193 &worker_stats[i].handled_packets,
194 rte_memory_order_relaxed));
195 printf("Sanity test with two hash values done\n");
196 }
197
198 /* give a different hash value to each packet,
199 * so load gets distributed */
200 clear_packet_count();
201 for (i = 0; i < BURST; i++)
202 bufs[i]->hash.usr = i+1;
203
204 rte_distributor_process(db, bufs, BURST);
205 count = 0;
206 do {
207 rte_distributor_flush(db);
208 count += rte_distributor_returned_pkts(db,
209 returns, BURST*2);
210 } while (count < BURST);
211 if (total_packet_count() != BURST) {
212 printf("Line %d: Error, not all packets flushed. "
213 "Expected %u, got %u\n",
214 __LINE__, BURST, total_packet_count());
215 rte_mempool_put_bulk(p, (void *)bufs, BURST);
216 return -1;
217 }
218
219 for (i = 0; i < rte_lcore_count() - 1; i++)
220 printf("Worker %u handled %u packets\n", i,
221 rte_atomic_load_explicit(&worker_stats[i].handled_packets,
222 rte_memory_order_relaxed));
223 printf("Sanity test with non-zero hashes done\n");
224
225 rte_mempool_put_bulk(p, (void *)bufs, BURST);
226
227 /* sanity test with BIG_BATCH packets to ensure they all arrived back
228 * from the returned packets function */
229 clear_packet_count();
230 struct rte_mbuf *many_bufs[BIG_BATCH], *return_bufs[BIG_BATCH];
231 unsigned num_returned = 0;
232 unsigned int num_being_processed = 0;
233 unsigned int return_buffer_capacity = 127;/* RTE_DISTRIB_RETURNS_MASK */
234
235 /* flush out any remaining packets */
236 rte_distributor_flush(db);
237 rte_distributor_clear_returns(db);
238
239 if (rte_mempool_get_bulk(p, (void *)many_bufs, BIG_BATCH) != 0) {
240 printf("line %d: Error getting mbufs from pool\n", __LINE__);
241 return -1;
242 }
243 for (i = 0; i < BIG_BATCH; i++)
244 many_bufs[i]->hash.usr = i << 2;
245
246 printf("=== testing big burst (%s) ===\n", wp->name);
247 for (i = 0; i < BIG_BATCH/BURST; i++) {
248 rte_distributor_process(db,
249 &many_bufs[i*BURST], BURST);
250 num_being_processed += BURST;
251 do {
252 count = rte_distributor_returned_pkts(db,
253 &return_bufs[num_returned],
254 BIG_BATCH - num_returned);
255 num_being_processed -= count;
256 num_returned += count;
257 rte_distributor_flush(db);
258 } while (num_being_processed + BURST > return_buffer_capacity);
259 }
260 retries = 0;
261 do {
262 rte_distributor_flush(db);
263 count = rte_distributor_returned_pkts(db,
264 &return_bufs[num_returned],
265 BIG_BATCH - num_returned);
266 num_returned += count;
267 retries++;
268 } while ((num_returned < BIG_BATCH) && (retries < 100));
269
270 if (num_returned != BIG_BATCH) {
271 printf("line %d: Missing packets, expected %d\n",
272 __LINE__, num_returned);
273 rte_mempool_put_bulk(p, (void *)many_bufs, BIG_BATCH);
274 return -1;
275 }
276
277 /* big check - make sure all packets made it back!! */
278 for (i = 0; i < BIG_BATCH; i++) {
279 unsigned j;
280 struct rte_mbuf *src = many_bufs[i];
281 for (j = 0; j < BIG_BATCH; j++) {
282 if (return_bufs[j] == src)
283 break;
284 }
285
286 if (j == BIG_BATCH) {
287 printf("Error: could not find source packet #%u\n", i);
288 rte_mempool_put_bulk(p, (void *)many_bufs, BIG_BATCH);
289 return -1;
290 }
291 }
292 printf("Sanity test of returned packets done\n");
293
294 rte_mempool_put_bulk(p, (void *)many_bufs, BIG_BATCH);
295
296 printf("\n");
297 return 0;
298 }
299
300
301 /* to test that the distributor does not lose packets, we use this worker
302 * function which frees mbufs when it gets them. The distributor thread does
303 * the mbuf allocation. If distributor drops packets we'll eventually run out
304 * of mbufs.
305 */
306 static int
handle_work_with_free_mbufs(void * arg)307 handle_work_with_free_mbufs(void *arg)
308 {
309 alignas(RTE_CACHE_LINE_SIZE) struct rte_mbuf *buf[8];
310 struct worker_params *wp = arg;
311 struct rte_distributor *d = wp->dist;
312 unsigned int i;
313 unsigned int num;
314 unsigned int id = rte_atomic_fetch_add_explicit(&worker_idx, 1, rte_memory_order_relaxed);
315
316 num = rte_distributor_get_pkt(d, id, buf, NULL, 0);
317 while (!quit) {
318 rte_atomic_fetch_add_explicit(&worker_stats[id].handled_packets, num,
319 rte_memory_order_relaxed);
320 for (i = 0; i < num; i++)
321 rte_pktmbuf_free(buf[i]);
322 num = rte_distributor_get_pkt(d, id, buf, NULL, 0);
323 }
324 rte_atomic_fetch_add_explicit(&worker_stats[id].handled_packets, num,
325 rte_memory_order_relaxed);
326 rte_distributor_return_pkt(d, id, buf, num);
327 return 0;
328 }
329
330 /* Perform a sanity test of the distributor with a large number of packets,
331 * where we allocate a new set of mbufs for each burst. The workers then
332 * free the mbufs. This ensures that we don't have any packet leaks in the
333 * library.
334 */
335 static int
sanity_test_with_mbuf_alloc(struct worker_params * wp,struct rte_mempool * p)336 sanity_test_with_mbuf_alloc(struct worker_params *wp, struct rte_mempool *p)
337 {
338 struct rte_distributor *d = wp->dist;
339 unsigned i;
340 struct rte_mbuf *bufs[BURST];
341 unsigned int processed;
342
343 printf("=== Sanity test with mbuf alloc/free (%s) ===\n", wp->name);
344
345 clear_packet_count();
346 for (i = 0; i < ((1<<ITER_POWER)); i += BURST) {
347 unsigned j;
348 while (rte_mempool_get_bulk(p, (void *)bufs, BURST) < 0)
349 rte_distributor_process(d, NULL, 0);
350 for (j = 0; j < BURST; j++) {
351 bufs[j]->hash.usr = (i+j) << 1;
352 }
353
354 processed = 0;
355 while (processed < BURST)
356 processed += rte_distributor_process(d,
357 &bufs[processed], BURST - processed);
358 }
359
360 rte_distributor_flush(d);
361
362 rte_delay_us(10000);
363
364 if (total_packet_count() < (1<<ITER_POWER)) {
365 printf("Line %u: Packet count is incorrect, %u, expected %u\n",
366 __LINE__, total_packet_count(),
367 (1<<ITER_POWER));
368 return -1;
369 }
370
371 printf("Sanity test with mbuf alloc/free passed\n\n");
372 return 0;
373 }
374
375 static int
handle_work_for_shutdown_test(void * arg)376 handle_work_for_shutdown_test(void *arg)
377 {
378 alignas(RTE_CACHE_LINE_SIZE) struct rte_mbuf *buf[8];
379 struct worker_params *wp = arg;
380 struct rte_distributor *d = wp->dist;
381 unsigned int num;
382 unsigned int zero_id = 0;
383 unsigned int zero_unset;
384 const unsigned int id = rte_atomic_fetch_add_explicit(&worker_idx, 1,
385 rte_memory_order_relaxed);
386
387 num = rte_distributor_get_pkt(d, id, buf, NULL, 0);
388
389 if (num > 0) {
390 zero_unset = RTE_MAX_LCORE;
391 rte_atomic_compare_exchange_strong_explicit(&zero_idx, &zero_unset, id,
392 rte_memory_order_acq_rel, rte_memory_order_acquire);
393 }
394 zero_id = rte_atomic_load_explicit(&zero_idx, rte_memory_order_acquire);
395
396 /* wait for quit single globally, or for worker zero, wait
397 * for zero_quit */
398 while (!quit && !(id == zero_id && zero_quit)) {
399 rte_atomic_fetch_add_explicit(&worker_stats[id].handled_packets, num,
400 rte_memory_order_relaxed);
401 num = rte_distributor_get_pkt(d, id, buf, NULL, 0);
402
403 if (num > 0) {
404 zero_unset = RTE_MAX_LCORE;
405 rte_atomic_compare_exchange_strong_explicit(&zero_idx, &zero_unset, id,
406 rte_memory_order_acq_rel, rte_memory_order_acquire);
407 }
408 zero_id = rte_atomic_load_explicit(&zero_idx, rte_memory_order_acquire);
409 }
410
411 rte_atomic_fetch_add_explicit(&worker_stats[id].handled_packets, num,
412 rte_memory_order_relaxed);
413 if (id == zero_id) {
414 rte_distributor_return_pkt(d, id, NULL, 0);
415
416 /* for worker zero, allow it to restart to pick up last packet
417 * when all workers are shutting down.
418 */
419 rte_atomic_store_explicit(&zero_sleep, 1, rte_memory_order_release);
420 while (zero_quit)
421 usleep(100);
422 rte_atomic_store_explicit(&zero_sleep, 0, rte_memory_order_release);
423
424 num = rte_distributor_get_pkt(d, id, buf, NULL, 0);
425
426 while (!quit) {
427 rte_atomic_fetch_add_explicit(&worker_stats[id].handled_packets,
428 num, rte_memory_order_relaxed);
429 num = rte_distributor_get_pkt(d, id, buf, NULL, 0);
430 }
431 }
432 rte_distributor_return_pkt(d, id, buf, num);
433 return 0;
434 }
435
436
437 /* Perform a sanity test of the distributor with a large number of packets,
438 * where we allocate a new set of mbufs for each burst. The workers then
439 * free the mbufs. This ensures that we don't have any packet leaks in the
440 * library.
441 */
442 static int
sanity_test_with_worker_shutdown(struct worker_params * wp,struct rte_mempool * p)443 sanity_test_with_worker_shutdown(struct worker_params *wp,
444 struct rte_mempool *p)
445 {
446 struct rte_distributor *d = wp->dist;
447 struct rte_mbuf *bufs[BURST];
448 struct rte_mbuf *bufs2[BURST];
449 unsigned int i;
450 unsigned int failed = 0;
451 unsigned int processed = 0;
452
453 printf("=== Sanity test of worker shutdown ===\n");
454
455 clear_packet_count();
456
457 if (rte_mempool_get_bulk(p, (void *)bufs, BURST) != 0) {
458 printf("line %d: Error getting mbufs from pool\n", __LINE__);
459 return -1;
460 }
461
462 /*
463 * Now set all hash values in all buffers to same value so all
464 * pkts go to the one worker thread
465 */
466 for (i = 0; i < BURST; i++)
467 bufs[i]->hash.usr = 1;
468
469 processed = 0;
470 while (processed < BURST)
471 processed += rte_distributor_process(d, &bufs[processed],
472 BURST - processed);
473 rte_distributor_flush(d);
474
475 /* at this point, we will have processed some packets and have a full
476 * backlog for the other ones at worker 0.
477 */
478
479 /* get more buffers to queue up, again setting them to the same flow */
480 if (rte_mempool_get_bulk(p, (void *)bufs2, BURST) != 0) {
481 printf("line %d: Error getting mbufs from pool\n", __LINE__);
482 rte_mempool_put_bulk(p, (void *)bufs, BURST);
483 return -1;
484 }
485 for (i = 0; i < BURST; i++)
486 bufs2[i]->hash.usr = 1;
487
488 /* get worker zero to quit */
489 zero_quit = 1;
490 rte_distributor_process(d, bufs2, BURST);
491
492 /* flush the distributor */
493 rte_distributor_flush(d);
494 while (!rte_atomic_load_explicit(&zero_sleep, rte_memory_order_acquire))
495 rte_distributor_flush(d);
496
497 zero_quit = 0;
498 while (rte_atomic_load_explicit(&zero_sleep, rte_memory_order_acquire))
499 rte_delay_us(100);
500
501 for (i = 0; i < rte_lcore_count() - 1; i++)
502 printf("Worker %u handled %u packets\n", i,
503 rte_atomic_load_explicit(&worker_stats[i].handled_packets,
504 rte_memory_order_relaxed));
505
506 if (total_packet_count() != BURST * 2) {
507 printf("Line %d: Error, not all packets flushed. "
508 "Expected %u, got %u\n",
509 __LINE__, BURST * 2, total_packet_count());
510 failed = 1;
511 }
512
513 rte_mempool_put_bulk(p, (void *)bufs, BURST);
514 rte_mempool_put_bulk(p, (void *)bufs2, BURST);
515
516 if (failed)
517 return -1;
518
519 printf("Sanity test with worker shutdown passed\n\n");
520 return 0;
521 }
522
523 /* Test that the flush function is able to move packets between workers when
524 * one worker shuts down..
525 */
526 static int
test_flush_with_worker_shutdown(struct worker_params * wp,struct rte_mempool * p)527 test_flush_with_worker_shutdown(struct worker_params *wp,
528 struct rte_mempool *p)
529 {
530 struct rte_distributor *d = wp->dist;
531 struct rte_mbuf *bufs[BURST];
532 unsigned int i;
533 unsigned int failed = 0;
534 unsigned int processed;
535
536 printf("=== Test flush fn with worker shutdown (%s) ===\n", wp->name);
537
538 clear_packet_count();
539 if (rte_mempool_get_bulk(p, (void *)bufs, BURST) != 0) {
540 printf("line %d: Error getting mbufs from pool\n", __LINE__);
541 return -1;
542 }
543
544 /* now set all hash values in all buffers to zero, so all pkts go to the
545 * one worker thread */
546 for (i = 0; i < BURST; i++)
547 bufs[i]->hash.usr = 0;
548
549 processed = 0;
550 while (processed < BURST)
551 processed += rte_distributor_process(d, &bufs[processed],
552 BURST - processed);
553 /* at this point, we will have processed some packets and have a full
554 * backlog for the other ones at worker 0.
555 */
556
557 /* get worker zero to quit */
558 zero_quit = 1;
559
560 /* flush the distributor */
561 rte_distributor_flush(d);
562
563 while (!rte_atomic_load_explicit(&zero_sleep, rte_memory_order_acquire))
564 rte_distributor_flush(d);
565
566 zero_quit = 0;
567
568 while (rte_atomic_load_explicit(&zero_sleep, rte_memory_order_acquire))
569 rte_delay_us(100);
570
571 for (i = 0; i < rte_lcore_count() - 1; i++)
572 printf("Worker %u handled %u packets\n", i,
573 rte_atomic_load_explicit(&worker_stats[i].handled_packets,
574 rte_memory_order_relaxed));
575
576 if (total_packet_count() != BURST) {
577 printf("Line %d: Error, not all packets flushed. "
578 "Expected %u, got %u\n",
579 __LINE__, BURST, total_packet_count());
580 failed = 1;
581 }
582
583 rte_mempool_put_bulk(p, (void *)bufs, BURST);
584
585 if (failed)
586 return -1;
587
588 printf("Flush test with worker shutdown passed\n\n");
589 return 0;
590 }
591
592 static int
handle_and_mark_work(void * arg)593 handle_and_mark_work(void *arg)
594 {
595 alignas(RTE_CACHE_LINE_SIZE) struct rte_mbuf *buf[8];
596 struct worker_params *wp = arg;
597 struct rte_distributor *db = wp->dist;
598 unsigned int num, i;
599 unsigned int id = rte_atomic_fetch_add_explicit(&worker_idx, 1, rte_memory_order_relaxed);
600 num = rte_distributor_get_pkt(db, id, buf, NULL, 0);
601 while (!quit) {
602 rte_atomic_fetch_add_explicit(&worker_stats[id].handled_packets, num,
603 rte_memory_order_relaxed);
604 for (i = 0; i < num; i++)
605 *seq_field(buf[i]) += id + 1;
606 num = rte_distributor_get_pkt(db, id,
607 buf, buf, num);
608 }
609 rte_atomic_fetch_add_explicit(&worker_stats[id].handled_packets, num,
610 rte_memory_order_relaxed);
611 rte_distributor_return_pkt(db, id, buf, num);
612 return 0;
613 }
614
615 /* sanity_mark_test sends packets to workers which mark them.
616 * Every packet has also encoded sequence number.
617 * The returned packets are sorted and verified if they were handled
618 * by proper workers.
619 */
620 static int
sanity_mark_test(struct worker_params * wp,struct rte_mempool * p)621 sanity_mark_test(struct worker_params *wp, struct rte_mempool *p)
622 {
623 const unsigned int buf_count = 24;
624 const unsigned int burst = 8;
625 const unsigned int shift = 12;
626 const unsigned int seq_shift = 10;
627
628 struct rte_distributor *db = wp->dist;
629 struct rte_mbuf *bufs[buf_count];
630 struct rte_mbuf *returns[buf_count];
631 unsigned int i, count, id;
632 unsigned int sorted[buf_count], seq;
633 unsigned int failed = 0;
634 unsigned int processed;
635
636 printf("=== Marked packets test ===\n");
637 clear_packet_count();
638 if (rte_mempool_get_bulk(p, (void *)bufs, buf_count) != 0) {
639 printf("line %d: Error getting mbufs from pool\n", __LINE__);
640 return -1;
641 }
642
643 /* bufs' hashes will be like these below, but shifted left.
644 * The shifting is for avoiding collisions with backlogs
645 * and in-flight tags left by previous tests.
646 * [1, 1, 1, 1, 1, 1, 1, 1
647 * 1, 1, 1, 1, 2, 2, 2, 2
648 * 2, 2, 2, 2, 1, 1, 1, 1]
649 */
650 for (i = 0; i < burst; i++) {
651 bufs[0 * burst + i]->hash.usr = 1 << shift;
652 bufs[1 * burst + i]->hash.usr = ((i < burst / 2) ? 1 : 2)
653 << shift;
654 bufs[2 * burst + i]->hash.usr = ((i < burst / 2) ? 2 : 1)
655 << shift;
656 }
657 /* Assign a sequence number to each packet. The sequence is shifted,
658 * so that lower bits will hold mark from worker.
659 */
660 for (i = 0; i < buf_count; i++)
661 *seq_field(bufs[i]) = i << seq_shift;
662
663 count = 0;
664 for (i = 0; i < buf_count/burst; i++) {
665 processed = 0;
666 while (processed < burst)
667 processed += rte_distributor_process(db,
668 &bufs[i * burst + processed],
669 burst - processed);
670 count += rte_distributor_returned_pkts(db, &returns[count],
671 buf_count - count);
672 }
673
674 do {
675 rte_distributor_flush(db);
676 count += rte_distributor_returned_pkts(db, &returns[count],
677 buf_count - count);
678 } while (count < buf_count);
679
680 for (i = 0; i < rte_lcore_count() - 1; i++)
681 printf("Worker %u handled %u packets\n", i,
682 rte_atomic_load_explicit(&worker_stats[i].handled_packets,
683 rte_memory_order_relaxed));
684
685 /* Sort returned packets by sent order (sequence numbers). */
686 for (i = 0; i < buf_count; i++) {
687 seq = *seq_field(returns[i]) >> seq_shift;
688 id = *seq_field(returns[i]) - (seq << seq_shift);
689 sorted[seq] = id;
690 }
691
692 /* Verify that packets [0-11] and [20-23] were processed
693 * by the same worker
694 */
695 for (i = 1; i < 12; i++) {
696 if (sorted[i] != sorted[0]) {
697 printf("Packet number %u processed by worker %u,"
698 " but should be processes by worker %u\n",
699 i, sorted[i], sorted[0]);
700 failed = 1;
701 }
702 }
703 for (i = 20; i < 24; i++) {
704 if (sorted[i] != sorted[0]) {
705 printf("Packet number %u processed by worker %u,"
706 " but should be processes by worker %u\n",
707 i, sorted[i], sorted[0]);
708 failed = 1;
709 }
710 }
711 /* And verify that packets [12-19] were processed
712 * by the another worker
713 */
714 for (i = 13; i < 20; i++) {
715 if (sorted[i] != sorted[12]) {
716 printf("Packet number %u processed by worker %u,"
717 " but should be processes by worker %u\n",
718 i, sorted[i], sorted[12]);
719 failed = 1;
720 }
721 }
722
723 rte_mempool_put_bulk(p, (void *)bufs, buf_count);
724
725 if (failed)
726 return -1;
727
728 printf("Marked packets test passed\n");
729 return 0;
730 }
731
732 static
test_error_distributor_create_name(void)733 int test_error_distributor_create_name(void)
734 {
735 struct rte_distributor *d = NULL;
736 struct rte_distributor *db = NULL;
737 char *name = NULL;
738
739 d = rte_distributor_create(name, rte_socket_id(),
740 rte_lcore_count() - 1,
741 RTE_DIST_ALG_SINGLE);
742 if (d != NULL || rte_errno != EINVAL) {
743 printf("ERROR: No error on create() with NULL name param\n");
744 return -1;
745 }
746
747 db = rte_distributor_create(name, rte_socket_id(),
748 rte_lcore_count() - 1,
749 RTE_DIST_ALG_BURST);
750 if (db != NULL || rte_errno != EINVAL) {
751 printf("ERROR: No error on create() with NULL param\n");
752 return -1;
753 }
754
755 return 0;
756 }
757
758
759 static
test_error_distributor_create_numworkers(void)760 int test_error_distributor_create_numworkers(void)
761 {
762 struct rte_distributor *ds = NULL;
763 struct rte_distributor *db = NULL;
764
765 ds = rte_distributor_create("test_numworkers", rte_socket_id(),
766 RTE_MAX_LCORE + 10,
767 RTE_DIST_ALG_SINGLE);
768 if (ds != NULL || rte_errno != EINVAL) {
769 printf("ERROR: No error on create() with num_workers > MAX\n");
770 return -1;
771 }
772
773 db = rte_distributor_create("test_numworkers", rte_socket_id(),
774 RTE_MAX_LCORE + 10,
775 RTE_DIST_ALG_BURST);
776 if (db != NULL || rte_errno != EINVAL) {
777 printf("ERROR: No error on create() num_workers > MAX\n");
778 return -1;
779 }
780
781 return 0;
782 }
783
784
785 /* Useful function which ensures that all worker functions terminate */
786 static void
quit_workers(struct worker_params * wp,struct rte_mempool * p)787 quit_workers(struct worker_params *wp, struct rte_mempool *p)
788 {
789 struct rte_distributor *d = wp->dist;
790 const unsigned num_workers = rte_lcore_count() - 1;
791 unsigned i;
792 struct rte_mbuf *bufs[RTE_MAX_LCORE];
793 struct rte_mbuf *returns[RTE_MAX_LCORE];
794 if (rte_mempool_get_bulk(p, (void *)bufs, num_workers) != 0) {
795 printf("line %d: Error getting mbufs from pool\n", __LINE__);
796 return;
797 }
798
799 zero_quit = 0;
800 quit = 1;
801 for (i = 0; i < num_workers; i++) {
802 bufs[i]->hash.usr = i << 1;
803 rte_distributor_process(d, &bufs[i], 1);
804 }
805
806 rte_distributor_process(d, NULL, 0);
807 rte_distributor_flush(d);
808 rte_eal_mp_wait_lcore();
809
810 while (rte_distributor_returned_pkts(d, returns, RTE_MAX_LCORE))
811 ;
812
813 rte_distributor_clear_returns(d);
814 rte_mempool_put_bulk(p, (void *)bufs, num_workers);
815
816 quit = 0;
817 worker_idx = 0;
818 zero_idx = RTE_MAX_LCORE;
819 zero_quit = 0;
820 zero_sleep = 0;
821 }
822
823 static int
test_distributor(void)824 test_distributor(void)
825 {
826 static struct rte_distributor *ds;
827 static struct rte_distributor *db;
828 static struct rte_distributor *dist[2];
829 static struct rte_mempool *p;
830 int i;
831
832 static const struct rte_mbuf_dynfield seq_dynfield_desc = {
833 .name = "test_distributor_dynfield_seq",
834 .size = sizeof(seq_dynfield_t),
835 .align = alignof(seq_dynfield_t),
836 };
837 seq_dynfield_offset =
838 rte_mbuf_dynfield_register(&seq_dynfield_desc);
839 if (seq_dynfield_offset < 0) {
840 printf("Error registering mbuf field\n");
841 return TEST_FAILED;
842 }
843
844 if (rte_lcore_count() < 2) {
845 printf("Not enough cores for distributor_autotest, expecting at least 2\n");
846 return TEST_SKIPPED;
847 }
848
849 if (db == NULL) {
850 db = rte_distributor_create("Test_dist_burst", rte_socket_id(),
851 rte_lcore_count() - 1,
852 RTE_DIST_ALG_BURST);
853 if (db == NULL) {
854 printf("Error creating burst distributor\n");
855 return -1;
856 }
857 } else {
858 rte_distributor_flush(db);
859 rte_distributor_clear_returns(db);
860 }
861
862 if (ds == NULL) {
863 ds = rte_distributor_create("Test_dist_single",
864 rte_socket_id(),
865 rte_lcore_count() - 1,
866 RTE_DIST_ALG_SINGLE);
867 if (ds == NULL) {
868 printf("Error creating single distributor\n");
869 return -1;
870 }
871 } else {
872 rte_distributor_flush(ds);
873 rte_distributor_clear_returns(ds);
874 }
875
876 const unsigned nb_bufs = (511 * rte_lcore_count()) < BIG_BATCH ?
877 (BIG_BATCH * 2) - 1 : (511 * rte_lcore_count());
878 if (p == NULL) {
879 p = rte_pktmbuf_pool_create("DT_MBUF_POOL", nb_bufs, BURST,
880 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
881 if (p == NULL) {
882 printf("Error creating mempool\n");
883 return -1;
884 }
885 }
886
887 dist[0] = ds;
888 dist[1] = db;
889
890 for (i = 0; i < 2; i++) {
891
892 worker_params.dist = dist[i];
893 if (i)
894 strlcpy(worker_params.name, "burst",
895 sizeof(worker_params.name));
896 else
897 strlcpy(worker_params.name, "single",
898 sizeof(worker_params.name));
899
900 rte_eal_mp_remote_launch(handle_work,
901 &worker_params, SKIP_MAIN);
902 if (sanity_test(&worker_params, p) < 0)
903 goto err;
904 quit_workers(&worker_params, p);
905
906 rte_eal_mp_remote_launch(handle_work_with_free_mbufs,
907 &worker_params, SKIP_MAIN);
908 if (sanity_test_with_mbuf_alloc(&worker_params, p) < 0)
909 goto err;
910 quit_workers(&worker_params, p);
911
912 if (rte_lcore_count() > 2) {
913 rte_eal_mp_remote_launch(handle_work_for_shutdown_test,
914 &worker_params,
915 SKIP_MAIN);
916 if (sanity_test_with_worker_shutdown(&worker_params,
917 p) < 0)
918 goto err;
919 quit_workers(&worker_params, p);
920
921 rte_eal_mp_remote_launch(handle_work_for_shutdown_test,
922 &worker_params,
923 SKIP_MAIN);
924 if (test_flush_with_worker_shutdown(&worker_params,
925 p) < 0)
926 goto err;
927 quit_workers(&worker_params, p);
928
929 rte_eal_mp_remote_launch(handle_and_mark_work,
930 &worker_params, SKIP_MAIN);
931 if (sanity_mark_test(&worker_params, p) < 0)
932 goto err;
933 quit_workers(&worker_params, p);
934
935 } else {
936 printf("Too few cores to run worker shutdown test\n");
937 }
938
939 }
940
941 if (test_error_distributor_create_numworkers() == -1 ||
942 test_error_distributor_create_name() == -1) {
943 printf("rte_distributor_create parameter check tests failed");
944 return -1;
945 }
946
947 return 0;
948
949 err:
950 quit_workers(&worker_params, p);
951 return -1;
952 }
953
954 #endif /* !RTE_EXEC_ENV_WINDOWS */
955
956 REGISTER_FAST_TEST(distributor_autotest, false, true, test_distributor);
957