LXR dpdk/app/test/test_per

   1/* SPDX-License-Identifier: BSD-3-Clause
   2 * Copyright(c) 2010-2014 Intel Corporation
   3 */
   4
   5#include <stdio.h>
   6#include <stdint.h>
   7#include <sys/queue.h>
   8
   9#include <rte_common.h>
  10#include <rte_memory.h>
  11#include <rte_per_lcore.h>
  12#include <rte_launch.h>
  13#include <rte_eal.h>
  14#include <rte_lcore.h>
  15#include <rte_cycles.h>
  16
  17#include "test.h"
  18
  19/*
  20 * Per-lcore variables and lcore launch
  21 * ====================================
  22 *
  23 * - Use ``rte_eal_mp_remote_launch()`` to call ``assign_vars()`` on
  24 *   every available lcore. In this function, a per-lcore variable is
  25 *   assigned to the lcore_id.
  26 *
  27 * - Use ``rte_eal_mp_remote_launch()`` to call ``display_vars()`` on
  28 *   every available lcore. The function checks that the variable is
  29 *   correctly set, or returns -1.
  30 *
  31 * - If at least one per-core variable was not correct, the test function
  32 *   returns -1.
  33 */
  34
  35static RTE_DEFINE_PER_LCORE(unsigned, test) = 0x12345678;
  36
  37static int
  38assign_vars(__rte_unused void *arg)
  39{
  40        if (RTE_PER_LCORE(test) != 0x12345678)
  41                return -1;
  42        RTE_PER_LCORE(test) = rte_lcore_id();
  43        return 0;
  44}
  45
  46static int
  47display_vars(__rte_unused void *arg)
  48{
  49        unsigned lcore_id = rte_lcore_id();
  50        unsigned var = RTE_PER_LCORE(test);
  51        unsigned socket_id = rte_lcore_to_socket_id(lcore_id);
  52
  53        printf("on socket %u, on core %u, variable is %u\n", socket_id, lcore_id, var);
  54        if (lcore_id != var)
  55                return -1;
  56
  57        RTE_PER_LCORE(test) = 0x12345678;
  58        return 0;
  59}
  60
  61static int
  62test_per_lcore_delay(__rte_unused void *arg)
  63{
  64        rte_delay_ms(100);
  65        printf("wait 100ms on lcore %u\n", rte_lcore_id());
  66
  67        return 0;
  68}
  69
  70static int
  71test_per_lcore(void)
  72{
  73        unsigned lcore_id;
  74        int ret;
  75
  76        rte_eal_mp_remote_launch(assign_vars, NULL, SKIP_MAIN);
  77        RTE_LCORE_FOREACH_WORKER(lcore_id) {
  78                if (rte_eal_wait_lcore(lcore_id) < 0)
  79                        return -1;
  80        }
  81
  82        rte_eal_mp_remote_launch(display_vars, NULL, SKIP_MAIN);
  83        RTE_LCORE_FOREACH_WORKER(lcore_id) {
  84                if (rte_eal_wait_lcore(lcore_id) < 0)
  85                        return -1;
  86        }
  87
  88        /* test if it could do remote launch twice at the same time or not */
  89        ret = rte_eal_mp_remote_launch(test_per_lcore_delay, NULL, SKIP_MAIN);
  90        if (ret < 0) {
  91                printf("It fails to do remote launch but it should able to do\n");
  92                return -1;
  93        }
  94        /* it should not be able to launch a lcore which is running */
  95        ret = rte_eal_mp_remote_launch(test_per_lcore_delay, NULL, SKIP_MAIN);
  96        if (ret == 0) {
  97                printf("It does remote launch successfully but it should not at this time\n");
  98                return -1;
  99        }
 100        RTE_LCORE_FOREACH_WORKER(lcore_id) {
 101                if (rte_eal_wait_lcore(lcore_id) < 0)
 102                        return -1;
 103        }
 104
 105        return 0;
 106}
 107
 108REGISTER_TEST_COMMAND(per_lcore_autotest, test_per_lcore);
 109