1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2019 Facebook */
#include <test_progs.h>
struct s {
int a;
long long b;
} __attribute__((packed));
#include "test_skeleton.skel.h"
void test_skeleton(void)
{
int duration = 0, err;
struct test_skeleton* skel;
struct test_skeleton__bss *bss;
struct test_skeleton__data *data;
struct test_skeleton__rodata *rodata;
struct test_skeleton__kconfig *kcfg;
skel = test_skeleton__open();
if (CHECK(!skel, "skel_open", "failed to open skeleton\n"))
return;
if (CHECK(skel->kconfig, "skel_kconfig", "kconfig is mmaped()!\n"))
goto cleanup;
bss = skel->bss;
data = skel->data;
rodata = skel->rodata;
/* validate values are pre-initialized correctly */
CHECK(data->in1 != -1, "in1", "got %d != exp %d\n", data->in1, -1);
CHECK(data->out1 != -1, "out1", "got %d != exp %d\n", data->out1, -1);
CHECK(data->in2 != -1, "in2", "got %lld != exp %lld\n", data->in2, -1LL);
CHECK(data->out2 != -1, "out2", "got %lld != exp %lld\n", data->out2, -1LL);
CHECK(bss->in3 != 0, "in3", "got %d != exp %d\n", bss->in3, 0);
CHECK(bss->out3 != 0, "out3", "got %d != exp %d\n", bss->out3, 0);
CHECK(bss->in4 != 0, "in4", "got %lld != exp %lld\n", bss->in4, 0LL);
CHECK(bss->out4 != 0, "out4", "got %lld != exp %lld\n", bss->out4, 0LL);
CHECK(rodata->in6 != 0, "in6", "got %d != exp %d\n", rodata->in6, 0);
CHECK(bss->out6 != 0, "out6", "got %d != exp %d\n", bss->out6, 0);
/* validate we can pre-setup global variables, even in .bss */
data->in1 = 10;
data->in2 = 11;
bss->in3 = 12;
bss->in4 = 13;
rodata->in6 = 14;
err = test_skeleton__load(skel);
if (CHECK(err, "skel_load", "failed to load skeleton: %d\n", err))
goto cleanup;
/* validate pre-setup values are still there */
CHECK(data->in1 != 10, "in1", "got %d != exp %d\n", data->in1, 10);
CHECK(data->in2 != 11, "in2", "got %lld != exp %lld\n", data->in2, 11LL);
CHECK(bss->in3 != 12, "in3", "got %d != exp %d\n", bss->in3, 12);
CHECK(bss->in4 != 13, "in4", "got %lld != exp %lld\n", bss->in4, 13LL);
CHECK(rodata->in6 != 14, "in6", "got %d != exp %d\n", rodata->in6, 14);
/* now set new values and attach to get them into outX variables */
data->in1 = 1;
data->in2 = 2;
bss->in3 = 3;
bss->in4 = 4;
bss->in5.a = 5;
bss->in5.b = 6;
kcfg = skel->kconfig;
err = test_skeleton__attach(skel);
if (CHECK(err, "skel_attach", "skeleton attach failed: %d\n", err))
goto cleanup;
/* trigger tracepoint */
usleep(1);
CHECK(data->out1 != 1, "res1", "got %d != exp %d\n", data->out1, 1);
CHECK(data->out2 != 2, "res2", "got %lld != exp %d\n", data->out2, 2);
CHECK(bss->out3 != 3, "res3", "got %d != exp %d\n", (int)bss->out3, 3);
CHECK(bss->out4 != 4, "res4", "got %lld != exp %d\n", bss->out4, 4);
CHECK(bss->handler_out5.a != 5, "res5", "got %d != exp %d\n",
bss->handler_out5.a, 5);
CHECK(bss->handler_out5.b != 6, "res6", "got %lld != exp %d\n",
bss->handler_out5.b, 6);
CHECK(bss->out6 != 14, "res7", "got %d != exp %d\n", bss->out6, 14);
CHECK(bss->bpf_syscall != kcfg->CONFIG_BPF_SYSCALL, "ext1",
"got %d != exp %d\n", bss->bpf_syscall, kcfg->CONFIG_BPF_SYSCALL);
CHECK(bss->kern_ver != kcfg->LINUX_KERNEL_VERSION, "ext2",
"got %d != exp %d\n", bss->kern_ver, kcfg->LINUX_KERNEL_VERSION);
cleanup:
test_skeleton__destroy(skel);
}
|
