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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021// SPDX-License-Identifier: GPL-2.0// Copyright (c) 2019 Facebook#include <linux/bpf.h>#include <bpf/bpf_helpers.h>
#include "bpf_compiler.h"
char _license[] SEC("license") = "GPL";
SEC("socket")int combinations(volatile struct __sk_buff* skb){ int ret = 0, i;
__pragma_loop_no_unroll for (i = 0; i < 20; i++) if (skb->len) ret |= 1 << i; return ret;}