| // 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"); |
| |
| ASSERT_EQ(skel->bss->fentry_result2, 1, "modify_return fentry_result2"); |
| ASSERT_EQ(skel->bss->fexit_result2, 1, "modify_return fexit_result2"); |
| ASSERT_EQ(skel->bss->fmod_ret_result2, 1, "modify_return fmod_ret_result2"); |
| |
| cleanup: |
| modify_return__destroy(skel); |
| } |
| |
| /* TODO: conflict with get_func_ip_test */ |
| void serial_test_modify_return(void) |
| { |
| run_test(0 /* input_retval */, |
| 2 /* want_side_effect */, |
| 33 /* want_ret */); |
| run_test(-EINVAL /* input_retval */, |
| 0 /* want_side_effect */, |
| -EINVAL * 2 /* want_ret */); |
| } |