1// SPDX-License-Identifier: GPL-2.0
 2/* Copyright (c) Meta Platforms, Inc. and affiliates. */
 3
 4#include <test_progs.h>
 5#include "test_subskeleton.skel.h"
 6#include "test_subskeleton_lib.subskel.h"
 7
 8static void subskeleton_lib_setup(struct bpf_object *obj)
 9{
10	struct test_subskeleton_lib *lib = test_subskeleton_lib__open(obj);
11
12	if (!ASSERT_OK_PTR(lib, "open subskeleton"))
13		return;
14
15	*lib->rodata.var1 = 1;
16	*lib->data.var2 = 2;
17	lib->bss.var3->var3_1 = 3;
18	lib->bss.var3->var3_2 = 4;
19
20	test_subskeleton_lib__destroy(lib);
21}
22
23static int subskeleton_lib_subresult(struct bpf_object *obj)
24{
25	struct test_subskeleton_lib *lib = test_subskeleton_lib__open(obj);
26	int result;
27
28	if (!ASSERT_OK_PTR(lib, "open subskeleton"))
29		return -EINVAL;
30
31	result = *lib->bss.libout1;
32	ASSERT_EQ(result, 1 + 2 + 3 + 4 + 5 + 6, "lib subresult");
33
34	ASSERT_OK_PTR(lib->progs.lib_perf_handler, "lib_perf_handler");
35	ASSERT_STREQ(bpf_program__name(lib->progs.lib_perf_handler),
36		     "lib_perf_handler", "program name");
37
38	ASSERT_OK_PTR(lib->maps.map1, "map1");
39	ASSERT_STREQ(bpf_map__name(lib->maps.map1), "map1", "map name");
40
41	ASSERT_EQ(*lib->data.var5, 5, "__weak var5");
42	ASSERT_EQ(*lib->data.var6, 6, "extern var6");
43	ASSERT_TRUE(*lib->kconfig.CONFIG_BPF_SYSCALL, "CONFIG_BPF_SYSCALL");
44
45	test_subskeleton_lib__destroy(lib);
46	return result;
47}
48
49void test_subskeleton(void)
50{
51	int err, result;
52	struct test_subskeleton *skel;
53
54	skel = test_subskeleton__open();
55	if (!ASSERT_OK_PTR(skel, "skel_open"))
56		return;
57
58	skel->rodata->rovar1 = 10;
59	skel->rodata->var1 = 1;
60	subskeleton_lib_setup(skel->obj);
61
62	err = test_subskeleton__load(skel);
63	if (!ASSERT_OK(err, "skel_load"))
64		goto cleanup;
65
66	err = test_subskeleton__attach(skel);
67	if (!ASSERT_OK(err, "skel_attach"))
68		goto cleanup;
69
70	/* trigger tracepoint */
71	usleep(1);
72
73	result = subskeleton_lib_subresult(skel->obj) * 10;
74	ASSERT_EQ(skel->bss->out1, result, "unexpected calculation");
75
76cleanup:
77	test_subskeleton__destroy(skel);
78}