test_per_lcore.c revision 97f17497
1/*-
2 *   BSD LICENSE
3 *
4 *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
5 *   All rights reserved.
6 *
7 *   Redistribution and use in source and binary forms, with or without
8 *   modification, are permitted provided that the following conditions
9 *   are met:
10 *
11 *     * Redistributions of source code must retain the above copyright
12 *       notice, this list of conditions and the following disclaimer.
13 *     * Redistributions in binary form must reproduce the above copyright
14 *       notice, this list of conditions and the following disclaimer in
15 *       the documentation and/or other materials provided with the
16 *       distribution.
17 *     * Neither the name of Intel Corporation nor the names of its
18 *       contributors may be used to endorse or promote products derived
19 *       from this software without specific prior written permission.
20 *
21 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25 *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34#include <stdio.h>
35#include <stdint.h>
36#include <sys/queue.h>
37
38#include <rte_common.h>
39#include <rte_memory.h>
40#include <rte_memzone.h>
41#include <rte_per_lcore.h>
42#include <rte_launch.h>
43#include <rte_eal.h>
44#include <rte_per_lcore.h>
45#include <rte_lcore.h>
46#include <rte_cycles.h>
47
48#include "test.h"
49
50/*
51 * Per-lcore variables and lcore launch
52 * ====================================
53 *
54 * - Use ``rte_eal_mp_remote_launch()`` to call ``assign_vars()`` on
55 *   every available lcore. In this function, a per-lcore variable is
56 *   assigned to the lcore_id.
57 *
58 * - Use ``rte_eal_mp_remote_launch()`` to call ``display_vars()`` on
59 *   every available lcore. The function checks that the variable is
60 *   correctly set, or returns -1.
61 *
62 * - If at least one per-core variable was not correct, the test function
63 *   returns -1.
64 */
65
66static RTE_DEFINE_PER_LCORE(unsigned, test) = 0x12345678;
67
68static int
69assign_vars(__attribute__((unused)) void *arg)
70{
71	if (RTE_PER_LCORE(test) != 0x12345678)
72		return -1;
73	RTE_PER_LCORE(test) = rte_lcore_id();
74	return 0;
75}
76
77static int
78display_vars(__attribute__((unused)) void *arg)
79{
80	unsigned lcore_id = rte_lcore_id();
81	unsigned var = RTE_PER_LCORE(test);
82	unsigned socket_id = rte_lcore_to_socket_id(lcore_id);
83
84	printf("on socket %u, on core %u, variable is %u\n", socket_id, lcore_id, var);
85	if (lcore_id != var)
86		return -1;
87
88	RTE_PER_LCORE(test) = 0x12345678;
89	return 0;
90}
91
92static int
93test_per_lcore_delay(__attribute__((unused)) void *arg)
94{
95	rte_delay_ms(5000);
96	printf("wait 5000ms on lcore %u\n", rte_lcore_id());
97
98	return 0;
99}
100
101static int
102test_per_lcore(void)
103{
104	unsigned lcore_id;
105	int ret;
106
107	rte_eal_mp_remote_launch(assign_vars, NULL, SKIP_MASTER);
108	RTE_LCORE_FOREACH_SLAVE(lcore_id) {
109		if (rte_eal_wait_lcore(lcore_id) < 0)
110			return -1;
111	}
112
113	rte_eal_mp_remote_launch(display_vars, NULL, SKIP_MASTER);
114	RTE_LCORE_FOREACH_SLAVE(lcore_id) {
115		if (rte_eal_wait_lcore(lcore_id) < 0)
116			return -1;
117	}
118
119	/* test if it could do remote launch twice at the same time or not */
120	ret = rte_eal_mp_remote_launch(test_per_lcore_delay, NULL, SKIP_MASTER);
121	if (ret < 0) {
122		printf("It fails to do remote launch but it should able to do\n");
123		return -1;
124	}
125	/* it should not be able to launch a lcore which is running */
126	ret = rte_eal_mp_remote_launch(test_per_lcore_delay, NULL, SKIP_MASTER);
127	if (ret == 0) {
128		printf("It does remote launch successfully but it should not at this time\n");
129		return -1;
130	}
131	RTE_LCORE_FOREACH_SLAVE(lcore_id) {
132		if (rte_eal_wait_lcore(lcore_id) < 0)
133			return -1;
134	}
135
136	return 0;
137}
138
139static struct test_command per_lcore_cmd = {
140	.command = "per_lcore_autotest",
141	.callback = test_per_lcore,
142};
143REGISTER_TEST_COMMAND(per_lcore_cmd);
144