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
8 struct {
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
15 char _license[] SEC("license") = "GPL";
16
17 SEC("tc")
18 int 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 }
29
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