+++ /dev/null
-/*-
- * BSD LICENSE
- *
- * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "test.h"
-
-#include <unistd.h>
-#include <string.h>
-#include <rte_cycles.h>
-#include <rte_errno.h>
-#include <rte_mempool.h>
-#include <rte_mbuf.h>
-#include <rte_distributor.h>
-
-#define ITER_POWER 20 /* log 2 of how many iterations we do when timing. */
-#define BURST 32
-#define BIG_BATCH 1024
-
-/* statics - all zero-initialized by default */
-static volatile int quit; /**< general quit variable for all threads */
-static volatile int zero_quit; /**< var for when we just want thr0 to quit*/
-static volatile unsigned worker_idx;
-
-struct worker_stats {
- volatile unsigned handled_packets;
-} __rte_cache_aligned;
-struct worker_stats worker_stats[RTE_MAX_LCORE];
-
-/* returns the total count of the number of packets handled by the worker
- * functions given below.
- */
-static inline unsigned
-total_packet_count(void)
-{
- unsigned i, count = 0;
- for (i = 0; i < worker_idx; i++)
- count += worker_stats[i].handled_packets;
- return count;
-}
-
-/* resets the packet counts for a new test */
-static inline void
-clear_packet_count(void)
-{
- memset(&worker_stats, 0, sizeof(worker_stats));
-}
-
-/* this is the basic worker function for sanity test
- * it does nothing but return packets and count them.
- */
-static int
-handle_work(void *arg)
-{
- struct rte_mbuf *pkt = NULL;
- struct rte_distributor *d = arg;
- unsigned count = 0;
- unsigned id = __sync_fetch_and_add(&worker_idx, 1);
-
- pkt = rte_distributor_get_pkt(d, id, NULL);
- while (!quit) {
- worker_stats[id].handled_packets++, count++;
- pkt = rte_distributor_get_pkt(d, id, pkt);
- }
- worker_stats[id].handled_packets++, count++;
- rte_distributor_return_pkt(d, id, pkt);
- return 0;
-}
-
-/* do basic sanity testing of the distributor. This test tests the following:
- * - send 32 packets through distributor with the same tag and ensure they
- * all go to the one worker
- * - send 32 packets throught the distributor with two different tags and
- * verify that they go equally to two different workers.
- * - send 32 packets with different tags through the distributors and
- * just verify we get all packets back.
- * - send 1024 packets through the distributor, gathering the returned packets
- * as we go. Then verify that we correctly got all 1024 pointers back again,
- * not necessarily in the same order (as different flows).
- */
-static int
-sanity_test(struct rte_distributor *d, struct rte_mempool *p)
-{
- struct rte_mbuf *bufs[BURST];
- unsigned i;
-
- printf("=== Basic distributor sanity tests ===\n");
- clear_packet_count();
- if (rte_mempool_get_bulk(p, (void *)bufs, BURST) != 0) {
- printf("line %d: Error getting mbufs from pool\n", __LINE__);
- return -1;
- }
-
- /* now set all hash values in all buffers to zero, so all pkts go to the
- * one worker thread */
- for (i = 0; i < BURST; i++)
- bufs[i]->hash.usr = 0;
-
- rte_distributor_process(d, bufs, BURST);
- rte_distributor_flush(d);
- if (total_packet_count() != BURST) {
- printf("Line %d: Error, not all packets flushed. "
- "Expected %u, got %u\n",
- __LINE__, BURST, total_packet_count());
- return -1;
- }
-
- for (i = 0; i < rte_lcore_count() - 1; i++)
- printf("Worker %u handled %u packets\n", i,
- worker_stats[i].handled_packets);
- printf("Sanity test with all zero hashes done.\n");
- if (worker_stats[0].handled_packets != BURST)
- return -1;
-
- /* pick two flows and check they go correctly */
- if (rte_lcore_count() >= 3) {
- clear_packet_count();
- for (i = 0; i < BURST; i++)
- bufs[i]->hash.usr = (i & 1) << 8;
-
- rte_distributor_process(d, bufs, BURST);
- rte_distributor_flush(d);
- if (total_packet_count() != BURST) {
- printf("Line %d: Error, not all packets flushed. "
- "Expected %u, got %u\n",
- __LINE__, BURST, total_packet_count());
- return -1;
- }
-
- for (i = 0; i < rte_lcore_count() - 1; i++)
- printf("Worker %u handled %u packets\n", i,
- worker_stats[i].handled_packets);
- printf("Sanity test with two hash values done\n");
-
- if (worker_stats[0].handled_packets != 16 ||
- worker_stats[1].handled_packets != 16)
- return -1;
- }
-
- /* give a different hash value to each packet,
- * so load gets distributed */
- clear_packet_count();
- for (i = 0; i < BURST; i++)
- bufs[i]->hash.usr = i;
-
- rte_distributor_process(d, bufs, BURST);
- rte_distributor_flush(d);
- if (total_packet_count() != BURST) {
- printf("Line %d: Error, not all packets flushed. "
- "Expected %u, got %u\n",
- __LINE__, BURST, total_packet_count());
- return -1;
- }
-
- for (i = 0; i < rte_lcore_count() - 1; i++)
- printf("Worker %u handled %u packets\n", i,
- worker_stats[i].handled_packets);
- printf("Sanity test with non-zero hashes done\n");
-
- rte_mempool_put_bulk(p, (void *)bufs, BURST);
-
- /* sanity test with BIG_BATCH packets to ensure they all arrived back
- * from the returned packets function */
- clear_packet_count();
- struct rte_mbuf *many_bufs[BIG_BATCH], *return_bufs[BIG_BATCH];
- unsigned num_returned = 0;
-
- /* flush out any remaining packets */
- rte_distributor_flush(d);
- rte_distributor_clear_returns(d);
- if (rte_mempool_get_bulk(p, (void *)many_bufs, BIG_BATCH) != 0) {
- printf("line %d: Error getting mbufs from pool\n", __LINE__);
- return -1;
- }
- for (i = 0; i < BIG_BATCH; i++)
- many_bufs[i]->hash.usr = i << 2;
-
- for (i = 0; i < BIG_BATCH/BURST; i++) {
- rte_distributor_process(d, &many_bufs[i*BURST], BURST);
- num_returned += rte_distributor_returned_pkts(d,
- &return_bufs[num_returned],
- BIG_BATCH - num_returned);
- }
- rte_distributor_flush(d);
- num_returned += rte_distributor_returned_pkts(d,
- &return_bufs[num_returned], BIG_BATCH - num_returned);
-
- if (num_returned != BIG_BATCH) {
- printf("line %d: Number returned is not the same as "
- "number sent\n", __LINE__);
- return -1;
- }
- /* big check - make sure all packets made it back!! */
- for (i = 0; i < BIG_BATCH; i++) {
- unsigned j;
- struct rte_mbuf *src = many_bufs[i];
- for (j = 0; j < BIG_BATCH; j++)
- if (return_bufs[j] == src)
- break;
-
- if (j == BIG_BATCH) {
- printf("Error: could not find source packet #%u\n", i);
- return -1;
- }
- }
- printf("Sanity test of returned packets done\n");
-
- rte_mempool_put_bulk(p, (void *)many_bufs, BIG_BATCH);
-
- printf("\n");
- return 0;
-}
-
-
-/* to test that the distributor does not lose packets, we use this worker
- * function which frees mbufs when it gets them. The distributor thread does
- * the mbuf allocation. If distributor drops packets we'll eventually run out
- * of mbufs.
- */
-static int
-handle_work_with_free_mbufs(void *arg)
-{
- struct rte_mbuf *pkt = NULL;
- struct rte_distributor *d = arg;
- unsigned count = 0;
- unsigned id = __sync_fetch_and_add(&worker_idx, 1);
-
- pkt = rte_distributor_get_pkt(d, id, NULL);
- while (!quit) {
- worker_stats[id].handled_packets++, count++;
- rte_pktmbuf_free(pkt);
- pkt = rte_distributor_get_pkt(d, id, pkt);
- }
- worker_stats[id].handled_packets++, count++;
- rte_distributor_return_pkt(d, id, pkt);
- return 0;
-}
-
-/* Perform a sanity test of the distributor with a large number of packets,
- * where we allocate a new set of mbufs for each burst. The workers then
- * free the mbufs. This ensures that we don't have any packet leaks in the
- * library.
- */
-static int
-sanity_test_with_mbuf_alloc(struct rte_distributor *d, struct rte_mempool *p)
-{
- unsigned i;
- struct rte_mbuf *bufs[BURST];
-
- printf("=== Sanity test with mbuf alloc/free ===\n");
- clear_packet_count();
- for (i = 0; i < ((1<<ITER_POWER)); i += BURST) {
- unsigned j;
- while (rte_mempool_get_bulk(p, (void *)bufs, BURST) < 0)
- rte_distributor_process(d, NULL, 0);
- for (j = 0; j < BURST; j++) {
- bufs[j]->hash.usr = (i+j) << 1;
- rte_mbuf_refcnt_set(bufs[j], 1);
- }
-
- rte_distributor_process(d, bufs, BURST);
- }
-
- rte_distributor_flush(d);
- if (total_packet_count() < (1<<ITER_POWER)) {
- printf("Line %u: Packet count is incorrect, %u, expected %u\n",
- __LINE__, total_packet_count(),
- (1<<ITER_POWER));
- return -1;
- }
-
- printf("Sanity test with mbuf alloc/free passed\n\n");
- return 0;
-}
-
-static int
-handle_work_for_shutdown_test(void *arg)
-{
- struct rte_mbuf *pkt = NULL;
- struct rte_distributor *d = arg;
- unsigned count = 0;
- const unsigned id = __sync_fetch_and_add(&worker_idx, 1);
-
- pkt = rte_distributor_get_pkt(d, id, NULL);
- /* wait for quit single globally, or for worker zero, wait
- * for zero_quit */
- while (!quit && !(id == 0 && zero_quit)) {
- worker_stats[id].handled_packets++, count++;
- rte_pktmbuf_free(pkt);
- pkt = rte_distributor_get_pkt(d, id, NULL);
- }
- worker_stats[id].handled_packets++, count++;
- rte_distributor_return_pkt(d, id, pkt);
-
- if (id == 0) {
- /* for worker zero, allow it to restart to pick up last packet
- * when all workers are shutting down.
- */
- while (zero_quit)
- usleep(100);
- pkt = rte_distributor_get_pkt(d, id, NULL);
- while (!quit) {
- worker_stats[id].handled_packets++, count++;
- rte_pktmbuf_free(pkt);
- pkt = rte_distributor_get_pkt(d, id, NULL);
- }
- rte_distributor_return_pkt(d, id, pkt);
- }
- return 0;
-}
-
-
-/* Perform a sanity test of the distributor with a large number of packets,
- * where we allocate a new set of mbufs for each burst. The workers then
- * free the mbufs. This ensures that we don't have any packet leaks in the
- * library.
- */
-static int
-sanity_test_with_worker_shutdown(struct rte_distributor *d,
- struct rte_mempool *p)
-{
- struct rte_mbuf *bufs[BURST];
- unsigned i;
-
- printf("=== Sanity test of worker shutdown ===\n");
-
- clear_packet_count();
- if (rte_mempool_get_bulk(p, (void *)bufs, BURST) != 0) {
- printf("line %d: Error getting mbufs from pool\n", __LINE__);
- return -1;
- }
-
- /* now set all hash values in all buffers to zero, so all pkts go to the
- * one worker thread */
- for (i = 0; i < BURST; i++)
- bufs[i]->hash.usr = 0;
-
- rte_distributor_process(d, bufs, BURST);
- /* at this point, we will have processed some packets and have a full
- * backlog for the other ones at worker 0.
- */
-
- /* get more buffers to queue up, again setting them to the same flow */
- if (rte_mempool_get_bulk(p, (void *)bufs, BURST) != 0) {
- printf("line %d: Error getting mbufs from pool\n", __LINE__);
- return -1;
- }
- for (i = 0; i < BURST; i++)
- bufs[i]->hash.usr = 0;
-
- /* get worker zero to quit */
- zero_quit = 1;
- rte_distributor_process(d, bufs, BURST);
-
- /* flush the distributor */
- rte_distributor_flush(d);
- if (total_packet_count() != BURST * 2) {
- printf("Line %d: Error, not all packets flushed. "
- "Expected %u, got %u\n",
- __LINE__, BURST * 2, total_packet_count());
- return -1;
- }
-
- for (i = 0; i < rte_lcore_count() - 1; i++)
- printf("Worker %u handled %u packets\n", i,
- worker_stats[i].handled_packets);
-
- printf("Sanity test with worker shutdown passed\n\n");
- return 0;
-}
-
-/* Test that the flush function is able to move packets between workers when
- * one worker shuts down..
- */
-static int
-test_flush_with_worker_shutdown(struct rte_distributor *d,
- struct rte_mempool *p)
-{
- struct rte_mbuf *bufs[BURST];
- unsigned i;
-
- printf("=== Test flush fn with worker shutdown ===\n");
-
- clear_packet_count();
- if (rte_mempool_get_bulk(p, (void *)bufs, BURST) != 0) {
- printf("line %d: Error getting mbufs from pool\n", __LINE__);
- return -1;
- }
-
- /* now set all hash values in all buffers to zero, so all pkts go to the
- * one worker thread */
- for (i = 0; i < BURST; i++)
- bufs[i]->hash.usr = 0;
-
- rte_distributor_process(d, bufs, BURST);
- /* at this point, we will have processed some packets and have a full
- * backlog for the other ones at worker 0.
- */
-
- /* get worker zero to quit */
- zero_quit = 1;
-
- /* flush the distributor */
- rte_distributor_flush(d);
-
- zero_quit = 0;
- if (total_packet_count() != BURST) {
- printf("Line %d: Error, not all packets flushed. "
- "Expected %u, got %u\n",
- __LINE__, BURST, total_packet_count());
- return -1;
- }
-
- for (i = 0; i < rte_lcore_count() - 1; i++)
- printf("Worker %u handled %u packets\n", i,
- worker_stats[i].handled_packets);
-
- printf("Flush test with worker shutdown passed\n\n");
- return 0;
-}
-
-static
-int test_error_distributor_create_name(void)
-{
- struct rte_distributor *d = NULL;
- char *name = NULL;
-
- d = rte_distributor_create(name, rte_socket_id(),
- rte_lcore_count() - 1);
- if (d != NULL || rte_errno != EINVAL) {
- printf("ERROR: No error on create() with NULL name param\n");
- return -1;
- }
-
- return 0;
-}
-
-
-static
-int test_error_distributor_create_numworkers(void)
-{
- struct rte_distributor *d = NULL;
- d = rte_distributor_create("test_numworkers", rte_socket_id(),
- RTE_MAX_LCORE + 10);
- if (d != NULL || rte_errno != EINVAL) {
- printf("ERROR: No error on create() with num_workers > MAX\n");
- return -1;
- }
- return 0;
-}
-
-
-/* Useful function which ensures that all worker functions terminate */
-static void
-quit_workers(struct rte_distributor *d, struct rte_mempool *p)
-{
- const unsigned num_workers = rte_lcore_count() - 1;
- unsigned i;
- struct rte_mbuf *bufs[RTE_MAX_LCORE];
- rte_mempool_get_bulk(p, (void *)bufs, num_workers);
-
- zero_quit = 0;
- quit = 1;
- for (i = 0; i < num_workers; i++)
- bufs[i]->hash.usr = i << 1;
- rte_distributor_process(d, bufs, num_workers);
-
- rte_mempool_put_bulk(p, (void *)bufs, num_workers);
-
- rte_distributor_process(d, NULL, 0);
- rte_distributor_flush(d);
- rte_eal_mp_wait_lcore();
- quit = 0;
- worker_idx = 0;
-}
-
-static int
-test_distributor(void)
-{
- static struct rte_distributor *d;
- static struct rte_mempool *p;
-
- if (rte_lcore_count() < 2) {
- printf("ERROR: not enough cores to test distributor\n");
- return -1;
- }
-
- if (d == NULL) {
- d = rte_distributor_create("Test_distributor", rte_socket_id(),
- rte_lcore_count() - 1);
- if (d == NULL) {
- printf("Error creating distributor\n");
- return -1;
- }
- } else {
- rte_distributor_flush(d);
- rte_distributor_clear_returns(d);
- }
-
- const unsigned nb_bufs = (511 * rte_lcore_count()) < BIG_BATCH ?
- (BIG_BATCH * 2) - 1 : (511 * rte_lcore_count());
- if (p == NULL) {
- p = rte_pktmbuf_pool_create("DT_MBUF_POOL", nb_bufs, BURST,
- 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
- if (p == NULL) {
- printf("Error creating mempool\n");
- return -1;
- }
- }
-
- rte_eal_mp_remote_launch(handle_work, d, SKIP_MASTER);
- if (sanity_test(d, p) < 0)
- goto err;
- quit_workers(d, p);
-
- rte_eal_mp_remote_launch(handle_work_with_free_mbufs, d, SKIP_MASTER);
- if (sanity_test_with_mbuf_alloc(d, p) < 0)
- goto err;
- quit_workers(d, p);
-
- if (rte_lcore_count() > 2) {
- rte_eal_mp_remote_launch(handle_work_for_shutdown_test, d,
- SKIP_MASTER);
- if (sanity_test_with_worker_shutdown(d, p) < 0)
- goto err;
- quit_workers(d, p);
-
- rte_eal_mp_remote_launch(handle_work_for_shutdown_test, d,
- SKIP_MASTER);
- if (test_flush_with_worker_shutdown(d, p) < 0)
- goto err;
- quit_workers(d, p);
-
- } else {
- printf("Not enough cores to run tests for worker shutdown\n");
- }
-
- if (test_error_distributor_create_numworkers() == -1 ||
- test_error_distributor_create_name() == -1) {
- printf("rte_distributor_create parameter check tests failed");
- return -1;
- }
-
- return 0;
-
-err:
- quit_workers(d, p);
- return -1;
-}
-
-REGISTER_TEST_COMMAND(distributor_autotest, test_distributor);
Code Review / deb_dpdk.git / blobdiff