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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test_sockmap_invalid_update.c (453B)

      1// SPDX-License-Identifier: GPL-2.0
      2// Copyright (c) 2020 Cloudflare
      3#include "vmlinux.h"
      4#include <bpf/bpf_helpers.h>
      5
      6struct {
      7	__uint(type, BPF_MAP_TYPE_SOCKMAP);
      8	__uint(max_entries, 1);
      9	__type(key, __u32);
     10	__type(value, __u64);
     11} map SEC(".maps");
     12
     13SEC("sockops")
     14int bpf_sockmap(struct bpf_sock_ops *skops)
     15{
     16	__u32 key = 0;
     17
     18	if (skops->sk)
     19		bpf_map_update_elem(&map, &key, skops->sk, 0);
     20	return 0;
     21}
     22
     23char _license[] SEC("license") = "GPL";