1 // SPDX-License-Identifier: GPL-2.0-only 2 /* Copyright (c) 2020 Facebook */ 3 #include <stddef.h> 4 #include <linux/bpf.h> 5 #include <bpf/bpf_helpers.h> 6 #include "bpf_misc.h" 7 8 __noinline int foo(struct __sk_buff *skb) 9 { 10 return bpf_get_prandom_u32(); 11 } 12 13 SEC("cgroup_skb/ingress") 14 __success 15 int global_func8(struct __sk_buff *skb) 16 { 17 if (!foo(skb)) 18 return 0; 19 20 return 1; 21 } 22