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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation
*/
#include <stdio.h>
#include <stdint.h>
#include <rte_common.h>
#include <rte_cycles.h>
#include <rte_interrupts.h>
#include <rte_atomic.h>
#include <rte_alarm.h>
#include "test.h"
#define US_PER_MS 1000
#define RTE_TEST_ALARM_TIMEOUT 10 /* ms */
#define RTE_TEST_CHECK_PERIOD 3 /* ms */
#define RTE_TEST_MAX_REPEAT 20
static volatile int flag;
static void
test_alarm_callback(void *cb_arg)
{
flag = 1;
printf("Callback setting flag - OK. [cb_arg = %p]\n", cb_arg);
}
static rte_atomic32_t cb_count;
static void
test_multi_cb(void *arg)
{
rte_atomic32_inc(&cb_count);
printf("In %s - arg = %p\n", __func__, arg);
}
static volatile int recursive_error = 0;
static void
test_remove_in_callback(void *arg)
{
printf("In %s - arg = %p\n", __func__, arg);
if (rte_eal_alarm_cancel(test_remove_in_callback, arg) ||
rte_eal_alarm_cancel(test_remove_in_callback, (void *)-1)) {
printf("Error - cancelling callback from within function succeeded!\n");
recursive_error = 1;
}
flag = (int)((uintptr_t)arg);
}
static volatile int flag_2;
static void
test_remove_in_callback_2(void *arg)
{
if (rte_eal_alarm_cancel(test_remove_in_callback_2, arg) || rte_eal_alarm_cancel(test_remove_in_callback_2, (void *)-1)) {
printf("Error - cancelling callback of test_remove_in_callback_2\n");
return;
}
flag_2 = 1;
}
static int
test_multi_alarms(void)
{
int rm_count = 0;
int count = 0;
cb_count.cnt = 0;
printf("Expect 6 callbacks in order...\n");
/* add two alarms in order */
rte_eal_alarm_set(10 * US_PER_MS, test_multi_cb, (void *)1);
rte_eal_alarm_set(20 * US_PER_MS, test_multi_cb, (void *)2);
/* now add in reverse order */
rte_eal_alarm_set(60 * US_PER_MS, test_multi_cb, (void *)6);
rte_eal_alarm_set(50 * US_PER_MS, test_multi_cb, (void *)5);
rte_eal_alarm_set(40 * US_PER_MS, test_multi_cb, (void *)4);
rte_eal_alarm_set(30 * US_PER_MS, test_multi_cb, (void *)3);
/* wait for expiry */
rte_delay_ms(65);
if (cb_count.cnt != 6) {
printf("Missing callbacks\n");
/* remove any callbacks that might remain */
rte_eal_alarm_cancel(test_multi_cb, (void *)-1);
return -1;
}
cb_count.cnt = 0;
printf("Expect only callbacks with args 1 and 3...\n");
/* Add 3 flags, then delete one */
rte_eal_alarm_set(30 * US_PER_MS, test_multi_cb, (void *)3);
rte_eal_alarm_set(20 * US_PER_MS, test_multi_cb, (void *)2);
rte_eal_alarm_set(10 * US_PER_MS, test_multi_cb, (void *)1);
rm_count = rte_eal_alarm_cancel(test_multi_cb, (void *)2);
rte_delay_ms(35);
if (cb_count.cnt != 2 || rm_count != 1) {
printf("Error: invalid flags count or alarm removal failure"
" - flags value = %d, expected = %d\n",
(int)cb_count.cnt, 2);
/* remove any callbacks that might remain */
rte_eal_alarm_cancel(test_multi_cb, (void *)-1);
return -1;
}
printf("Testing adding and then removing multiple alarms\n");
/* finally test that no callbacks are called if we delete them all*/
rte_eal_alarm_set(10 * US_PER_MS, test_multi_cb, (void *)1);
rte_eal_alarm_set(10 * US_PER_MS, test_multi_cb, (void *)2);
rte_eal_alarm_set(10 * US_PER_MS, test_multi_cb, (void *)3);
rm_count = rte_eal_alarm_cancel(test_alarm_callback, (void *)-1);
if (rm_count != 0) {
printf("Error removing non-existant alarm succeeded\n");
rte_eal_alarm_cancel(test_multi_cb, (void *) -1);
return -1;
}
rm_count = rte_eal_alarm_cancel(test_multi_cb, (void *) -1);
if (rm_count != 3) {
printf("Error removing all pending alarm callbacks\n");
return -1;
}
/* Test that we cannot cancel an alarm from within the callback itself
* Also test that we can cancel head-of-line callbacks ok.*/
flag = 0;
recursive_error = 0;
rte_eal_alarm_set(10 * US_PER_MS, test_remove_in_callback, (void *)1);
rte_eal_alarm_set(20 * US_PER_MS, test_remove_in_callback, (void *)2);
rm_count = rte_eal_alarm_cancel(test_remove_in_callback, (void *)1);
if (rm_count != 1) {
printf("Error cancelling head-of-list callback\n");
return -1;
}
rte_delay_ms(15);
if (flag != 0) {
printf("Error, cancelling head-of-list leads to premature callback\n");
return -1;
}
while (flag != 2 && count++ < RTE_TEST_MAX_REPEAT)
rte_delay_ms(10);
if (flag != 2) {
printf("Error - expected callback not called\n");
rte_eal_alarm_cancel(test_remove_in_callback, (void *)-1);
return -1;
}
if (recursive_error == 1)
return -1;
/* Check if it can cancel all for the same callback */
printf("Testing canceling all for the same callback\n");
flag_2 = 0;
rte_eal_alarm_set(10 * US_PER_MS, test_remove_in_callback, (void *)1);
rte_eal_alarm_set(20 * US_PER_MS, test_remove_in_callback_2, (void *)2);
rte_eal_alarm_set(30 * US_PER_MS, test_remove_in_callback_2, (void *)3);
rte_eal_alarm_set(40 * US_PER_MS, test_remove_in_callback, (void *)4);
rm_count = rte_eal_alarm_cancel(test_remove_in_callback_2, (void *)-1);
if (rm_count != 2) {
printf("Error, cannot cancel all for the same callback\n");
return -1;
}
rm_count = rte_eal_alarm_cancel(test_remove_in_callback, (void *)-1);
if (rm_count != 2) {
printf("Error, cannot cancel all for the same callback\n");
return -1;
}
return 0;
}
static int
test_alarm(void)
{
int count = 0;
#ifdef RTE_EXEC_ENV_FREEBSD
printf("The alarm API is not supported on FreeBSD\n");
return 0;
#endif
/* check if the callback will be called */
printf("check if the callback will be called\n");
flag = 0;
if (rte_eal_alarm_set(RTE_TEST_ALARM_TIMEOUT * US_PER_MS,
test_alarm_callback, NULL) < 0) {
printf("fail to set alarm callback\n");
return -1;
}
while (flag == 0 && count++ < RTE_TEST_MAX_REPEAT)
rte_delay_ms(RTE_TEST_CHECK_PERIOD);
if (flag == 0){
printf("Callback not called\n");
return -1;
}
/* check if it will fail to set alarm with wrong us value */
printf("check if it will fail to set alarm with wrong ms values\n");
if (rte_eal_alarm_set(0, test_alarm_callback,
NULL) >= 0) {
printf("should not be successful with 0 us value\n");
return -1;
}
if (rte_eal_alarm_set(UINT64_MAX - 1, test_alarm_callback,
NULL) >= 0) {
printf("should not be successful with (UINT64_MAX-1) us value\n");
return -1;
}
/* check if it will fail to set alarm with null callback parameter */
printf("check if it will fail to set alarm with null callback parameter\n");
if (rte_eal_alarm_set(RTE_TEST_ALARM_TIMEOUT, NULL, NULL) >= 0) {
printf("should not be successful to set alarm with null callback parameter\n");
return -1;
}
/* check if it will fail to remove alarm with null callback parameter */
printf("check if it will fail to remove alarm with null callback parameter\n");
if (rte_eal_alarm_cancel(NULL, NULL) == 0) {
printf("should not be successful to remove alarm with null callback parameter");
return -1;
}
if (test_multi_alarms() != 0)
return -1;
return 0;
}
REGISTER_TEST_COMMAND(alarm_autotest, test_alarm);
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