1// SPDX-License-Identifier: GPL-2.0
2
3#include <linux/bpf.h>
4#include <bpf/bpf_helpers.h>
5#include "bpf_misc.h"
6
7SEC("netfilter")
8__description("bpf_exit with invalid return code. test1")
9__failure __msg("R0 is not a known value")
10__naked void with_invalid_return_code_test1(void)
11{
12	asm volatile ("					\
13	r0 = *(u64*)(r1 + 0);				\
14	exit;						\
15"	::: __clobber_all);
16}
17
18SEC("netfilter")
19__description("bpf_exit with valid return code. test2")
20__success
21__naked void with_valid_return_code_test2(void)
22{
23	asm volatile ("					\
24	r0 = 0;						\
25	exit;						\
26"	::: __clobber_all);
27}
28
29SEC("netfilter")
30__description("bpf_exit with valid return code. test3")
31__success
32__naked void with_valid_return_code_test3(void)
33{
34	asm volatile ("					\
35	r0 = 1;						\
36	exit;						\
37"	::: __clobber_all);
38}
39
40SEC("netfilter")
41__description("bpf_exit with invalid return code. test4")
42__failure __msg("R0 has smin=2 smax=2 should have been in [0, 1]")
43__naked void with_invalid_return_code_test4(void)
44{
45	asm volatile ("					\
46	r0 = 2;						\
47	exit;						\
48"	::: __clobber_all);
49}
50