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