1// SPDX-License-Identifier: GPL-2.0
2#include <test_progs.h>
3#include "kprobe_multi.skel.h"
4#include "trace_helpers.h"
5#include "bpf/libbpf_internal.h"
6
7static struct ksyms *ksyms;
8
9static void kprobe_multi_testmod_check(struct kprobe_multi *skel)
10{
11	ASSERT_EQ(skel->bss->kprobe_testmod_test1_result, 1, "kprobe_test1_result");
12	ASSERT_EQ(skel->bss->kprobe_testmod_test2_result, 1, "kprobe_test2_result");
13	ASSERT_EQ(skel->bss->kprobe_testmod_test3_result, 1, "kprobe_test3_result");
14
15	ASSERT_EQ(skel->bss->kretprobe_testmod_test1_result, 1, "kretprobe_test1_result");
16	ASSERT_EQ(skel->bss->kretprobe_testmod_test2_result, 1, "kretprobe_test2_result");
17	ASSERT_EQ(skel->bss->kretprobe_testmod_test3_result, 1, "kretprobe_test3_result");
18}
19
20static void test_testmod_attach_api(struct bpf_kprobe_multi_opts *opts)
21{
22	struct kprobe_multi *skel = NULL;
23
24	skel = kprobe_multi__open_and_load();
25	if (!ASSERT_OK_PTR(skel, "fentry_raw_skel_load"))
26		return;
27
28	skel->bss->pid = getpid();
29
30	skel->links.test_kprobe_testmod = bpf_program__attach_kprobe_multi_opts(
31						skel->progs.test_kprobe_testmod,
32						NULL, opts);
33	if (!skel->links.test_kprobe_testmod)
34		goto cleanup;
35
36	opts->retprobe = true;
37	skel->links.test_kretprobe_testmod = bpf_program__attach_kprobe_multi_opts(
38						skel->progs.test_kretprobe_testmod,
39						NULL, opts);
40	if (!skel->links.test_kretprobe_testmod)
41		goto cleanup;
42
43	ASSERT_OK(trigger_module_test_read(1), "trigger_read");
44	kprobe_multi_testmod_check(skel);
45
46cleanup:
47	kprobe_multi__destroy(skel);
48}
49
50static void test_testmod_attach_api_addrs(void)
51{
52	LIBBPF_OPTS(bpf_kprobe_multi_opts, opts);
53	unsigned long long addrs[3];
54
55	addrs[0] = ksym_get_addr_local(ksyms, "bpf_testmod_fentry_test1");
56	ASSERT_NEQ(addrs[0], 0, "ksym_get_addr_local");
57	addrs[1] = ksym_get_addr_local(ksyms, "bpf_testmod_fentry_test2");
58	ASSERT_NEQ(addrs[1], 0, "ksym_get_addr_local");
59	addrs[2] = ksym_get_addr_local(ksyms, "bpf_testmod_fentry_test3");
60	ASSERT_NEQ(addrs[2], 0, "ksym_get_addr_local");
61
62	opts.addrs = (const unsigned long *) addrs;
63	opts.cnt = ARRAY_SIZE(addrs);
64
65	test_testmod_attach_api(&opts);
66}
67
68static void test_testmod_attach_api_syms(void)
69{
70	LIBBPF_OPTS(bpf_kprobe_multi_opts, opts);
71	const char *syms[3] = {
72		"bpf_testmod_fentry_test1",
73		"bpf_testmod_fentry_test2",
74		"bpf_testmod_fentry_test3",
75	};
76
77	opts.syms = syms;
78	opts.cnt = ARRAY_SIZE(syms);
79	test_testmod_attach_api(&opts);
80}
81
82void serial_test_kprobe_multi_testmod_test(void)
83{
84	ksyms = load_kallsyms_local();
85	if (!ASSERT_OK_PTR(ksyms, "load_kallsyms_local"))
86		return;
87
88	if (test__start_subtest("testmod_attach_api_syms"))
89		test_testmod_attach_api_syms();
90
91	if (test__start_subtest("testmod_attach_api_addrs"))
92		test_testmod_attach_api_addrs();
93
94	free_kallsyms_local(ksyms);
95}
96