tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0-only
2/* Copyright (c) 2017 Facebook
3 */
4#include <stddef.h>
5#include <linux/bpf.h>
6#include <linux/pkt_cls.h>
7#include "bpf_helpers.h"
8
9/* It is a dumb bpf program such that it must have no
10 * issue to be loaded since testing the verifier is
11 * not the focus here.
12 */
13
14int _version SEC("version") = 1;
15
16struct {
17 __uint(type, BPF_MAP_TYPE_ARRAY);
18 __uint(max_entries, 1);
19 __type(key, __u32);
20 __type(value, __u64);
21} test_map_id SEC(".maps");
22
23SEC("test_obj_id_dummy")
24int test_obj_id(struct __sk_buff *skb)
25{
26 __u32 key = 0;
27 __u64 *value;
28
29 value = bpf_map_lookup_elem(&test_map_id, &key);
30
31 return TC_ACT_OK;
32}