tools/testing/selftests/bpf/progs/test_sockmap_invalid_update.c

   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";