| 1 | // SPDX-License-Identifier: GPL-2.0 |
|---|---|
| 2 | // Copyright (c) 2020 Cloudflare |
| 3 | #include "vmlinux.h" |
| 4 | #include <bpf/bpf_helpers.h> |
| 5 | |
| 6 | struct { |
| 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 | |
| 13 | SEC("sockops") |
| 14 | int 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 | |
| 23 | char _license[] SEC("license") = "GPL"; |
| 24 |