1 // SPDX-License-Identifier: GPL-2.0-only 2 #include <stddef.h> 3 #include <linux/bpf.h> 4 #include <bpf/bpf_helpers.h> 5 6 __noinline int foo(unsigned int *v) 7 { 8 if (v) 9 *v = bpf_get_prandom_u32(); 10 11 return 0; 12 } 13 14 SEC("cgroup_skb/ingress") 15 int test_cls(struct __sk_buff *skb) 16 { 17 unsigned int v = 1; 18 19 foo(&v); 20 21 return v; 22 } 23