// SPDX-License-Identifier: GPL-2.0 // Copyright (c) 2020 Cloudflare #include "vmlinux.h" #include <bpf/bpf_helpers.h> struct { __uint(type, BPF_MAP_TYPE_SOCKMAP); __uint(max_entries, 1); __type(key, __u32); __type(value, __u64); } map SEC(".maps"); SEC("sockops") int bpf_sockmap(struct bpf_sock_ops *skops) { __u32 key = 0; if (skops->sk) bpf_map_update_elem(&map, &key, skops->sk, 0); return 0; } char _license[] SEC("license") = "GPL";