1// SPDX-License-Identifier: GPL-2.0
2// Copyright (c) 2020 Cloudflare
3#include "vmlinux.h"
4#include <bpf/bpf_helpers.h>
5
6struct {
7	__uint(type, BPF_MAP_TYPE_SOCKMAP);
8	__uint(max_entries, 1);
9	__type(key, __u32);
10	__type(value, __u64);
11} map SEC(".maps");
12
13SEC("sockops")
14int bpf_sockmap(struct bpf_sock_ops *skops)
15{
16	__u32 key = 0;
17
18	if (skops->sk)
19		bpf_map_update_elem(&map, &key, skops->sk, 0);
20	return 0;
21}
22
23char _license[] SEC("license") = "GPL";
24