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_eal.h>
9 #include <rte_memory.h>
10 #include <rte_common.h>
11 #include <rte_memzone.h>
12
13 #include "test.h"
14
15 /*
16 * Memory
17 * ======
18 *
19 * - Dump the mapped memory. The python-expect script checks that at
20 * least one line is dumped.
21 *
22 * - Check that memory size is different than 0.
23 *
24 * - Try to read all memory; it should not segfault.
25 */
26
27 static int
check_mem(const struct rte_memseg_list * msl __rte_unused,const struct rte_memseg * ms,void * arg __rte_unused)28 check_mem(const struct rte_memseg_list *msl __rte_unused,
29 const struct rte_memseg *ms, void *arg __rte_unused)
30 {
31 volatile uint8_t *mem = (volatile uint8_t *) ms->addr;
32 size_t i, max = ms->len;
33
34 for (i = 0; i < max; i++, mem++)
35 *mem;
36 return 0;
37 }
38
39 static int
check_seg_fds(const struct rte_memseg_list * msl,const struct rte_memseg * ms,void * arg __rte_unused)40 check_seg_fds(const struct rte_memseg_list *msl, const struct rte_memseg *ms,
41 void *arg __rte_unused)
42 {
43 size_t offset;
44 int ret;
45
46 /* skip external segments */
47 if (msl->external)
48 return 0;
49
50 /* try segment fd first. we're in a callback, so thread-unsafe */
51 ret = rte_memseg_get_fd_thread_unsafe(ms);
52 if (ret < 0) {
53 /* ENOTSUP means segment is valid, but there is not support for
54 * segment fd API (e.g. on FreeBSD).
55 */
56 if (errno == ENOTSUP)
57 return 1;
58 /* all other errors are treated as failures */
59 return -1;
60 }
61
62 /* we're able to get memseg fd - try getting its offset */
63 ret = rte_memseg_get_fd_offset_thread_unsafe(ms, &offset);
64 if (ret < 0) {
65 if (errno == ENOTSUP)
66 return 1;
67 return -1;
68 }
69 return 0;
70 }
71
72 static int
test_memory(void)73 test_memory(void)
74 {
75 uint64_t s;
76 int ret;
77
78 /*
79 * dump the mapped memory: the python-expect script checks
80 * that at least one line is dumped
81 */
82 printf("Dump memory layout\n");
83 rte_dump_physmem_layout(stdout);
84
85 /* check that memory size is != 0 */
86 s = rte_eal_get_physmem_size();
87 if (s == 0) {
88 printf("No memory detected\n");
89 return -1;
90 }
91
92 /* try to read memory (should not segfault) */
93 rte_memseg_walk(check_mem, NULL);
94
95 /* check segment fd support */
96 ret = rte_memseg_walk(check_seg_fds, NULL);
97 if (ret == 1) {
98 printf("Segment fd API is unsupported\n");
99 } else if (ret == -1) {
100 printf("Error getting segment fd's\n");
101 return -1;
102 }
103
104 return 0;
105 }
106
107 REGISTER_TEST_COMMAND(memory_autotest, test_memory);
108