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_skb_helpers.c (643B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2#include "vmlinux.h"
      3#include <bpf/bpf_helpers.h>
      4#include <bpf/bpf_endian.h>
      5
      6#define TEST_COMM_LEN 16
      7
      8struct {
      9	__uint(type, BPF_MAP_TYPE_CGROUP_ARRAY);
     10	__uint(max_entries, 1);
     11	__type(key, u32);
     12	__type(value, u32);
     13} cgroup_map SEC(".maps");
     14
     15char _license[] SEC("license") = "GPL";
     16
     17SEC("tc")
     18int test_skb_helpers(struct __sk_buff *skb)
     19{
     20	struct task_struct *task;
     21	char comm[TEST_COMM_LEN];
     22	__u32 tpid;
     23
     24	task = (struct task_struct *)bpf_get_current_task();
     25	bpf_probe_read_kernel(&tpid , sizeof(tpid), &task->tgid);
     26	bpf_probe_read_kernel_str(&comm, sizeof(comm), &task->comm);
     27	return 0;
     28}