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
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