1ee103e9fSJohn Fastabend // SPDX-License-Identifier: GPL-2.0-only 2ee103e9fSJohn Fastabend #include "vmlinux.h" 3ee103e9fSJohn Fastabend #include <bpf/bpf_helpers.h> 4ee103e9fSJohn Fastabend #include <bpf/bpf_endian.h> 5ee103e9fSJohn Fastabend 6ee103e9fSJohn Fastabend #define TEST_COMM_LEN 16 7ee103e9fSJohn Fastabend 8ee103e9fSJohn Fastabend struct { 9ee103e9fSJohn Fastabend __uint(type, BPF_MAP_TYPE_CGROUP_ARRAY); 10ee103e9fSJohn Fastabend __uint(max_entries, 1); 11ee103e9fSJohn Fastabend __type(key, u32); 12ee103e9fSJohn Fastabend __type(value, u32); 13ee103e9fSJohn Fastabend } cgroup_map SEC(".maps"); 14ee103e9fSJohn Fastabend 15ee103e9fSJohn Fastabend char _license[] SEC("license") = "GPL"; 16ee103e9fSJohn Fastabend 17*c22bdd28SAndrii Nakryiko SEC("tc") test_skb_helpers(struct __sk_buff * skb)18ee103e9fSJohn Fastabendint test_skb_helpers(struct __sk_buff *skb) 19ee103e9fSJohn Fastabend { 20ee103e9fSJohn Fastabend struct task_struct *task; 21ee103e9fSJohn Fastabend char comm[TEST_COMM_LEN]; 22ee103e9fSJohn Fastabend __u32 tpid; 23ee103e9fSJohn Fastabend 24ee103e9fSJohn Fastabend task = (struct task_struct *)bpf_get_current_task(); 25ee103e9fSJohn Fastabend bpf_probe_read_kernel(&tpid , sizeof(tpid), &task->tgid); 26ee103e9fSJohn Fastabend bpf_probe_read_kernel_str(&comm, sizeof(comm), &task->comm); 27ee103e9fSJohn Fastabend return 0; 28ee103e9fSJohn Fastabend } 29