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// 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 */);
}
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