ceph/src/spdk/dpdk/test/test/test_alarm.c

   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
   8 #include <rte_common.h>
   9 #include <rte_cycles.h>
  10 #include <rte_interrupts.h>
  11 #include <rte_atomic.h>
  12 #include <rte_alarm.h>
  13
  14 #include "test.h"
  15
  16 #define US_PER_MS 1000
  17
  18 #define RTE_TEST_ALARM_TIMEOUT 10 /* ms */
  19 #define RTE_TEST_CHECK_PERIOD   3 /* ms */
  20 #define RTE_TEST_MAX_REPEAT    20
  21
  22 static volatile int flag;
  23
  24 static void
  25 test_alarm_callback(void *cb_arg)
  26 {
  27         flag = 1;
  28         printf("Callback setting flag - OK. [cb_arg = %p]\n", cb_arg);
  29 }
  30
  31 static rte_atomic32_t cb_count;
  32
  33 static void
  34 test_multi_cb(void *arg)
  35 {
  36         rte_atomic32_inc(&cb_count);
  37         printf("In %s - arg = %p\n", __func__, arg);
  38 }
  39
  40 static volatile int recursive_error = 0;
  41
  42 static void
  43 test_remove_in_callback(void *arg)
  44 {
  45         printf("In %s - arg = %p\n", __func__, arg);
  46         if (rte_eal_alarm_cancel(test_remove_in_callback, arg) ||
  47                         rte_eal_alarm_cancel(test_remove_in_callback, (void *)-1)) {
  48                 printf("Error - cancelling callback from within function succeeded!\n");
  49                 recursive_error = 1;
  50         }
  51         flag = (int)((uintptr_t)arg);
  52 }
  53
  54 static volatile int flag_2;
  55
  56 static void
  57 test_remove_in_callback_2(void *arg)
  58 {
  59         if (rte_eal_alarm_cancel(test_remove_in_callback_2, arg) || rte_eal_alarm_cancel(test_remove_in_callback_2, (void *)-1)) {
  60                 printf("Error - cancelling callback of test_remove_in_callback_2\n");
  61                 return;
  62         }
  63         flag_2 = 1;
  64 }
  65
  66 static int
  67 test_multi_alarms(void)
  68 {
  69         int rm_count = 0;
  70         int count = 0;
  71         cb_count.cnt = 0;
  72
  73         printf("Expect 6 callbacks in order...\n");
  74         /* add two alarms in order */
  75         rte_eal_alarm_set(10 * US_PER_MS, test_multi_cb, (void *)1);
  76         rte_eal_alarm_set(20 * US_PER_MS, test_multi_cb, (void *)2);
  77
  78         /* now add in reverse order */
  79         rte_eal_alarm_set(60 * US_PER_MS, test_multi_cb, (void *)6);
  80         rte_eal_alarm_set(50 * US_PER_MS, test_multi_cb, (void *)5);
  81         rte_eal_alarm_set(40 * US_PER_MS, test_multi_cb, (void *)4);
  82         rte_eal_alarm_set(30 * US_PER_MS, test_multi_cb, (void *)3);
  83
  84         /* wait for expiry */
  85         rte_delay_ms(65);
  86         if (cb_count.cnt != 6) {
  87                 printf("Missing callbacks\n");
  88                 /* remove any callbacks that might remain */
  89                 rte_eal_alarm_cancel(test_multi_cb, (void *)-1);
  90                 return -1;
  91         }
  92
  93         cb_count.cnt = 0;
  94         printf("Expect only callbacks with args 1 and 3...\n");
  95         /* Add 3 flags, then delete one */
  96         rte_eal_alarm_set(30 * US_PER_MS, test_multi_cb, (void *)3);
  97         rte_eal_alarm_set(20 * US_PER_MS, test_multi_cb, (void *)2);
  98         rte_eal_alarm_set(10 * US_PER_MS, test_multi_cb, (void *)1);
  99         rm_count = rte_eal_alarm_cancel(test_multi_cb, (void *)2);
 100
 101         rte_delay_ms(35);
 102         if (cb_count.cnt != 2 || rm_count != 1) {
 103                 printf("Error: invalid flags count or alarm removal failure"
 104                                 " -  flags value = %d, expected = %d\n",
 105                                 (int)cb_count.cnt, 2);
 106                 /* remove any callbacks that might remain */
 107                 rte_eal_alarm_cancel(test_multi_cb, (void *)-1);
 108                 return -1;
 109         }
 110
 111         printf("Testing adding and then removing multiple alarms\n");
 112         /* finally test that no callbacks are called if we delete them all*/
 113         rte_eal_alarm_set(10 * US_PER_MS, test_multi_cb, (void *)1);
 114         rte_eal_alarm_set(10 * US_PER_MS, test_multi_cb, (void *)2);
 115         rte_eal_alarm_set(10 * US_PER_MS, test_multi_cb, (void *)3);
 116         rm_count = rte_eal_alarm_cancel(test_alarm_callback, (void *)-1);
 117         if (rm_count != 0) {
 118                 printf("Error removing non-existant alarm succeeded\n");
 119                 rte_eal_alarm_cancel(test_multi_cb, (void *) -1);
 120                 return -1;
 121         }
 122         rm_count = rte_eal_alarm_cancel(test_multi_cb, (void *) -1);
 123         if (rm_count != 3) {
 124                 printf("Error removing all pending alarm callbacks\n");
 125                 return -1;
 126         }
 127
 128         /* Test that we cannot cancel an alarm from within the callback itself
 129          * Also test that we can cancel head-of-line callbacks ok.*/
 130         flag = 0;
 131         recursive_error = 0;
 132         rte_eal_alarm_set(10 * US_PER_MS, test_remove_in_callback, (void *)1);
 133         rte_eal_alarm_set(20 * US_PER_MS, test_remove_in_callback, (void *)2);
 134         rm_count = rte_eal_alarm_cancel(test_remove_in_callback, (void *)1);
 135         if (rm_count != 1) {
 136                 printf("Error cancelling head-of-list callback\n");
 137                 return -1;
 138         }
 139         rte_delay_ms(15);
 140         if (flag != 0) {
 141                 printf("Error, cancelling head-of-list leads to premature callback\n");
 142                 return -1;
 143         }
 144
 145         while (flag != 2 && count++ < RTE_TEST_MAX_REPEAT)
 146                 rte_delay_ms(10);
 147
 148         if (flag != 2) {
 149                 printf("Error - expected callback not called\n");
 150                 rte_eal_alarm_cancel(test_remove_in_callback, (void *)-1);
 151                 return -1;
 152         }
 153         if (recursive_error == 1)
 154                 return -1;
 155
 156         /* Check if it can cancel all for the same callback */
 157         printf("Testing canceling all for the same callback\n");
 158         flag_2 = 0;
 159         rte_eal_alarm_set(10 * US_PER_MS, test_remove_in_callback, (void *)1);
 160         rte_eal_alarm_set(20 * US_PER_MS, test_remove_in_callback_2, (void *)2);
 161         rte_eal_alarm_set(30 * US_PER_MS, test_remove_in_callback_2, (void *)3);
 162         rte_eal_alarm_set(40 * US_PER_MS, test_remove_in_callback, (void *)4);
 163         rm_count = rte_eal_alarm_cancel(test_remove_in_callback_2, (void *)-1);
 164         if (rm_count != 2) {
 165                 printf("Error, cannot cancel all for the same callback\n");
 166                 return -1;
 167         }
 168         rm_count = rte_eal_alarm_cancel(test_remove_in_callback, (void *)-1);
 169         if (rm_count != 2) {
 170                 printf("Error, cannot cancel all for the same callback\n");
 171                 return -1;
 172         }
 173
 174         return 0;
 175 }
 176
 177 static int
 178 test_alarm(void)
 179 {
 180         int count = 0;
 181
 182         /* check if the callback will be called */
 183         printf("check if the callback will be called\n");
 184         flag = 0;
 185         if (rte_eal_alarm_set(RTE_TEST_ALARM_TIMEOUT * US_PER_MS,
 186                         test_alarm_callback, NULL) < 0) {
 187                 printf("fail to set alarm callback\n");
 188                 return -1;
 189         }
 190         while (flag == 0 && count++ < RTE_TEST_MAX_REPEAT)
 191                 rte_delay_ms(RTE_TEST_CHECK_PERIOD);
 192
 193         if (flag == 0){
 194                 printf("Callback not called\n");
 195                 return -1;
 196         }
 197
 198         /* check if it will fail to set alarm with wrong us value */
 199         printf("check if it will fail to set alarm with wrong ms values\n");
 200         if (rte_eal_alarm_set(0, test_alarm_callback,
 201                                                 NULL) >= 0) {
 202                 printf("should not be successful with 0 us value\n");
 203                 return -1;
 204         }
 205         if (rte_eal_alarm_set(UINT64_MAX - 1, test_alarm_callback,
 206                                                 NULL) >= 0) {
 207                 printf("should not be successful with (UINT64_MAX-1) us value\n");
 208                 return -1;
 209         }
 210
 211         /* check if it will fail to set alarm with null callback parameter */
 212         printf("check if it will fail to set alarm with null callback parameter\n");
 213         if (rte_eal_alarm_set(RTE_TEST_ALARM_TIMEOUT, NULL, NULL) >= 0) {
 214                 printf("should not be successful to set alarm with null callback parameter\n");
 215                 return -1;
 216         }
 217
 218         /* check if it will fail to remove alarm with null callback parameter */
 219         printf("check if it will fail to remove alarm with null callback parameter\n");
 220         if (rte_eal_alarm_cancel(NULL, NULL) == 0) {
 221                 printf("should not be successful to remove alarm with null callback parameter");
 222                 return -1;
 223         }
 224
 225         if (test_multi_alarms() != 0)
 226                 return -1;
 227
 228         return 0;
 229 }
 230
 231 REGISTER_TEST_COMMAND(alarm_autotest, test_alarm);