29 lines
643 B
C
29 lines
643 B
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
#include "vmlinux.h"
|
|
#include <bpf/bpf_helpers.h>
|
|
#include <bpf/bpf_endian.h>
|
|
|
|
#define TEST_COMM_LEN 16
|
|
|
|
struct {
|
|
__uint(type, BPF_MAP_TYPE_CGROUP_ARRAY);
|
|
__uint(max_entries, 1);
|
|
__type(key, u32);
|
|
__type(value, u32);
|
|
} cgroup_map SEC(".maps");
|
|
|
|
char _license[] SEC("license") = "GPL";
|
|
|
|
SEC("tc")
|
|
int test_skb_helpers(struct __sk_buff *skb)
|
|
{
|
|
struct task_struct *task;
|
|
char comm[TEST_COMM_LEN];
|
|
__u32 tpid;
|
|
|
|
task = (struct task_struct *)bpf_get_current_task();
|
|
bpf_probe_read_kernel(&tpid , sizeof(tpid), &task->tgid);
|
|
bpf_probe_read_kernel_str(&comm, sizeof(comm), &task->comm);
|
|
return 0;
|
|
}
|