tools/testing/selftests/bpf/progs/test_global_func5.c


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33

// SPDX-License-Identifier: GPL-2.0-only
/* Copyright (c) 2020 Facebook */
#include <stddef.h>
#include <linux/bpf.h>
#include <bpf/bpf_helpers.h>
#include "bpf_misc.h"

__attribute__ ((noinline))
int f1(struct __sk_buff *skb)
{
	return skb->len;
}

int f3(int, struct __sk_buff *skb);

__attribute__ ((noinline))
int f2(int val, struct __sk_buff *skb)
{
	return f1(skb) + f3(val, (void *)&val); /* type mismatch */
}

__attribute__ ((noinline))
int f3(int val, struct __sk_buff *skb)
{
	return skb->ifindex * val;
}

SEC("tc")
__failure __msg("expected pointer to ctx, but got PTR")
int global_func5(struct __sk_buff *skb)
{
	return f1(skb) + f2(2, skb) + f3(3, skb);
}