]> Git Repo - linux.git/blob - tools/testing/selftests/bpf/progs/test_skb_helpers.c
Linux 6.14-rc3
[linux.git] / tools / testing / selftests / bpf / progs / test_skb_helpers.c
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 }
This page took 0.032989 seconds and 4 git commands to generate.