| 1 | // SPDX-License-Identifier: GPL-2.0 |
|---|---|
| 2 | // Copyright (c) 2019 Facebook |
| 3 | #include <linux/bpf.h> |
| 4 | #include <bpf/bpf_helpers.h> |
| 5 | |
| 6 | #include "bpf_compiler.h" |
| 7 | |
| 8 | char _license[] SEC("license") = "GPL"; |
| 9 | |
| 10 | SEC("socket") |
| 11 | int combinations(volatile struct __sk_buff* skb) |
| 12 | { |
| 13 | int ret = 0, i; |
| 14 | |
| 15 | __pragma_loop_no_unroll |
| 16 | for (i = 0; i < 20; i++) |
| 17 | if (skb->len) |
| 18 | ret |= 1 << i; |
| 19 | return ret; |
| 20 | } |
| 21 |