58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
|
|
/*
|
|
* Copyright 2020 Google LLC.
|
|
*/
|
|
|
|
#include <test_progs.h>
|
|
#include "modify_return.skel.h"
|
|
|
|
#define LOWER(x) ((x) & 0xffff)
|
|
#define UPPER(x) ((x) >> 16)
|
|
|
|
|
|
static void run_test(__u32 input_retval, __u16 want_side_effect, __s16 want_ret)
|
|
{
|
|
struct modify_return *skel = NULL;
|
|
int err, prog_fd;
|
|
__u16 side_effect;
|
|
__s16 ret;
|
|
LIBBPF_OPTS(bpf_test_run_opts, topts);
|
|
|
|
skel = modify_return__open_and_load();
|
|
if (!ASSERT_OK_PTR(skel, "skel_load"))
|
|
goto cleanup;
|
|
|
|
err = modify_return__attach(skel);
|
|
if (!ASSERT_OK(err, "modify_return__attach failed"))
|
|
goto cleanup;
|
|
|
|
skel->bss->input_retval = input_retval;
|
|
prog_fd = bpf_program__fd(skel->progs.fmod_ret_test);
|
|
err = bpf_prog_test_run_opts(prog_fd, &topts);
|
|
ASSERT_OK(err, "test_run");
|
|
|
|
side_effect = UPPER(topts.retval);
|
|
ret = LOWER(topts.retval);
|
|
|
|
ASSERT_EQ(ret, want_ret, "test_run ret");
|
|
ASSERT_EQ(side_effect, want_side_effect, "modify_return side_effect");
|
|
ASSERT_EQ(skel->bss->fentry_result, 1, "modify_return fentry_result");
|
|
ASSERT_EQ(skel->bss->fexit_result, 1, "modify_return fexit_result");
|
|
ASSERT_EQ(skel->bss->fmod_ret_result, 1, "modify_return fmod_ret_result");
|
|
|
|
cleanup:
|
|
modify_return__destroy(skel);
|
|
}
|
|
|
|
/* TODO: conflict with get_func_ip_test */
|
|
void serial_test_modify_return(void)
|
|
{
|
|
run_test(0 /* input_retval */,
|
|
1 /* want_side_effect */,
|
|
4 /* want_ret */);
|
|
run_test(-EINVAL /* input_retval */,
|
|
0 /* want_side_effect */,
|
|
-EINVAL /* want_ret */);
|
|
}
|