prepare.c

 1// SPDX-License-Identifier: GPL-2.0
 2/* Copyright (c) 2025 Meta */
 3#include <vmlinux.h>
 4#include <bpf/bpf_helpers.h>
 5
 6char _license[] SEC("license") = "GPL";
 7
 8int err;
 9
10struct {
11	__uint(type, BPF_MAP_TYPE_RINGBUF);
12	__uint(max_entries, 4096);
13} ringbuf SEC(".maps");
14
15struct {
16	__uint(type, BPF_MAP_TYPE_ARRAY);
17	__uint(max_entries, 1);
18	__type(key, __u32);
19	__type(value, __u32);
20} array_map SEC(".maps");
21
22SEC("cgroup_skb/egress")
23int program(struct __sk_buff *skb)
24{
25	err = 0;
26	return 0;
27}