selftests/bpf: Fix erroneous bitmask operation
[platform/kernel/linux-rpi.git] / tools / testing / selftests / bpf / progs / tailcall3.c
1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/bpf.h>
3
4 #include <bpf/bpf_helpers.h>
5
6 struct {
7         __uint(type, BPF_MAP_TYPE_PROG_ARRAY);
8         __uint(max_entries, 1);
9         __uint(key_size, sizeof(__u32));
10         __uint(value_size, sizeof(__u32));
11 } jmp_table SEC(".maps");
12
13 int count = 0;
14
15 SEC("tc")
16 int classifier_0(struct __sk_buff *skb)
17 {
18         count++;
19         bpf_tail_call_static(skb, &jmp_table, 0);
20         return 1;
21 }
22
23 SEC("tc")
24 int entry(struct __sk_buff *skb)
25 {
26         bpf_tail_call_static(skb, &jmp_table, 0);
27         return 0;
28 }
29
30 char __license[] SEC("license") = "GPL";