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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation
*/
#include <stdio.h>
#include <stdint.h>
#include <sys/queue.h>
#include <rte_common.h>
#include <rte_memory.h>
#include <rte_per_lcore.h>
#include <rte_launch.h>
#include <rte_eal.h>
#include <rte_lcore.h>
#include <rte_cycles.h>
#include "test.h"
/*
* Per-lcore variables and lcore launch
* ====================================
*
* - Use ``rte_eal_mp_remote_launch()`` to call ``assign_vars()`` on
* every available lcore. In this function, a per-lcore variable is
* assigned to the lcore_id.
*
* - Use ``rte_eal_mp_remote_launch()`` to call ``display_vars()`` on
* every available lcore. The function checks that the variable is
* correctly set, or returns -1.
*
* - If at least one per-core variable was not correct, the test function
* returns -1.
*/
static RTE_DEFINE_PER_LCORE(unsigned, test) = 0x12345678;
static int
assign_vars(__attribute__((unused)) void *arg)
{
if (RTE_PER_LCORE(test) != 0x12345678)
return -1;
RTE_PER_LCORE(test) = rte_lcore_id();
return 0;
}
static int
display_vars(__attribute__((unused)) void *arg)
{
unsigned lcore_id = rte_lcore_id();
unsigned var = RTE_PER_LCORE(test);
unsigned socket_id = rte_lcore_to_socket_id(lcore_id);
printf("on socket %u, on core %u, variable is %u\n", socket_id, lcore_id, var);
if (lcore_id != var)
return -1;
RTE_PER_LCORE(test) = 0x12345678;
return 0;
}
static int
test_per_lcore_delay(__attribute__((unused)) void *arg)
{
rte_delay_ms(100);
printf("wait 100ms on lcore %u\n", rte_lcore_id());
return 0;
}
static int
test_per_lcore(void)
{
unsigned lcore_id;
int ret;
rte_eal_mp_remote_launch(assign_vars, NULL, SKIP_MASTER);
RTE_LCORE_FOREACH_SLAVE(lcore_id) {
if (rte_eal_wait_lcore(lcore_id) < 0)
return -1;
}
rte_eal_mp_remote_launch(display_vars, NULL, SKIP_MASTER);
RTE_LCORE_FOREACH_SLAVE(lcore_id) {
if (rte_eal_wait_lcore(lcore_id) < 0)
return -1;
}
/* test if it could do remote launch twice at the same time or not */
ret = rte_eal_mp_remote_launch(test_per_lcore_delay, NULL, SKIP_MASTER);
if (ret < 0) {
printf("It fails to do remote launch but it should able to do\n");
return -1;
}
/* it should not be able to launch a lcore which is running */
ret = rte_eal_mp_remote_launch(test_per_lcore_delay, NULL, SKIP_MASTER);
if (ret == 0) {
printf("It does remote launch successfully but it should not at this time\n");
return -1;
}
RTE_LCORE_FOREACH_SLAVE(lcore_id) {
if (rte_eal_wait_lcore(lcore_id) < 0)
return -1;
}
return 0;
}
REGISTER_TEST_COMMAND(per_lcore_autotest, test_per_lcore);
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