cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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loop4.c (336B)

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