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1// SPDX-License-Identifier: GPL-2.02// Copyright (c) 2019 Facebook3#include <linux/bpf.h>4#include <bpf/bpf_helpers.h>5 6#include "bpf_compiler.h"7 8char _license[] SEC("license") = "GPL";9 10SEC("socket")11int combinations(volatile struct __sk_buff* skb)12{13 int ret = 0, i;14 15 __pragma_loop_no_unroll16 for (i = 0; i < 20; i++)17 if (skb->len)18 ret |= 1 << i;19 return ret;20}21