| // SPDX-License-Identifier: GPL-2.0-only | |
| #include <stddef.h> | |
| #include <linux/bpf.h> | |
| #include <bpf/bpf_helpers.h> | |
| struct Small { | |
| int x; | |
| }; | |
| struct Big { | |
| int x; | |
| int y; | |
| }; | |
| __noinline int foo(const struct Big *big) | |
| { | |
| if (!big) | |
| return 0; | |
| return bpf_get_prandom_u32() < big->y; | |
| } | |
| SEC("cgroup_skb/ingress") | |
| int test_cls(struct __sk_buff *skb) | |
| { | |
| const struct Small small = {.x = skb->len }; | |
| return foo((struct Big *)&small) ? 1 : 0; | |
| } |