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// SPDX-License-Identifier: GPL-2.0
/* Copyright (C) 2021. Huawei Technologies Co., Ltd */
#include <test_progs.h>
#include "dummy_st_ops.skel.h"
#include "trace_dummy_st_ops.skel.h"
/* Need to keep consistent with definition in include/linux/bpf.h */
struct bpf_dummy_ops_state {
int val;
};
static void test_dummy_st_ops_attach(void)
{
struct dummy_st_ops *skel;
struct bpf_link *link;
skel = dummy_st_ops__open_and_load();
if (!ASSERT_OK_PTR(skel, "dummy_st_ops_load"))
return;
link = bpf_map__attach_struct_ops(skel->maps.dummy_1);
ASSERT_EQ(libbpf_get_error(link), -EOPNOTSUPP, "dummy_st_ops_attach");
dummy_st_ops__destroy(skel);
}
static void test_dummy_init_ret_value(void)
{
__u64 args[1] = {0};
LIBBPF_OPTS(bpf_test_run_opts, attr,
.ctx_in = args,
.ctx_size_in = sizeof(args),
);
struct dummy_st_ops *skel;
int fd, err;
skel = dummy_st_ops__open_and_load();
if (!ASSERT_OK_PTR(skel, "dummy_st_ops_load"))
return;
fd = bpf_program__fd(skel->progs.test_1);
err = bpf_prog_test_run_opts(fd, &attr);
ASSERT_OK(err, "test_run");
ASSERT_EQ(attr.retval, 0xf2f3f4f5, "test_ret");
dummy_st_ops__destroy(skel);
}
static void test_dummy_init_ptr_arg(void)
{
int exp_retval = 0xbeef;
struct bpf_dummy_ops_state in_state = {
.val = exp_retval,
};
__u64 args[1] = {(unsigned long)&in_state};
LIBBPF_OPTS(bpf_test_run_opts, attr,
.ctx_in = args,
.ctx_size_in = sizeof(args),
);
struct trace_dummy_st_ops *trace_skel;
struct dummy_st_ops *skel;
int fd, err;
skel = dummy_st_ops__open_and_load();
if (!ASSERT_OK_PTR(skel, "dummy_st_ops_load"))
return;
fd = bpf_program__fd(skel->progs.test_1);
trace_skel = trace_dummy_st_ops__open();
if (!ASSERT_OK_PTR(trace_skel, "trace_dummy_st_ops__open"))
goto done;
err = bpf_program__set_attach_target(trace_skel->progs.fentry_test_1,
fd, "test_1");
if (!ASSERT_OK(err, "set_attach_target(fentry_test_1)"))
goto done;
err = trace_dummy_st_ops__load(trace_skel);
if (!ASSERT_OK(err, "load(trace_skel)"))
goto done;
err = trace_dummy_st_ops__attach(trace_skel);
if (!ASSERT_OK(err, "attach(trace_skel)"))
goto done;
err = bpf_prog_test_run_opts(fd, &attr);
ASSERT_OK(err, "test_run");
ASSERT_EQ(in_state.val, 0x5a, "test_ptr_ret");
ASSERT_EQ(attr.retval, exp_retval, "test_ret");
ASSERT_EQ(trace_skel->bss->val, exp_retval, "fentry_val");
done:
dummy_st_ops__destroy(skel);
trace_dummy_st_ops__destroy(trace_skel);
}
static void test_dummy_multiple_args(void)
{
__u64 args[5] = {0, -100, 0x8a5f, 'c', 0x1234567887654321ULL};
LIBBPF_OPTS(bpf_test_run_opts, attr,
.ctx_in = args,
.ctx_size_in = sizeof(args),
);
struct dummy_st_ops *skel;
int fd, err;
size_t i;
char name[8];
skel = dummy_st_ops__open_and_load();
if (!ASSERT_OK_PTR(skel, "dummy_st_ops_load"))
return;
fd = bpf_program__fd(skel->progs.test_2);
err = bpf_prog_test_run_opts(fd, &attr);
ASSERT_OK(err, "test_run");
for (i = 0; i < ARRAY_SIZE(args); i++) {
snprintf(name, sizeof(name), "arg %zu", i);
ASSERT_EQ(skel->bss->test_2_args[i], args[i], name);
}
dummy_st_ops__destroy(skel);
}
void test_dummy_st_ops(void)
{
if (test__start_subtest("dummy_st_ops_attach"))
test_dummy_st_ops_attach();
if (test__start_subtest("dummy_init_ret_value"))
test_dummy_init_ret_value();
if (test__start_subtest("dummy_init_ptr_arg"))
test_dummy_init_ptr_arg();
if (test__start_subtest("dummy_multiple_args"))
test_dummy_multiple_args();
}
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