| /* Copyright (c) 2017 Facebook | |
| * | |
| * This program is free software; you can redistribute it and/or | |
| * modify it under the terms of version 2 of the GNU General Public | |
| * License as published by the Free Software Foundation. | |
| */ | |
| #include <stddef.h> | |
| #include <linux/bpf.h> | |
| #include <linux/pkt_cls.h> | |
| #include "bpf_helpers.h" | |
| /* It is a dumb bpf program such that it must have no | |
| * issue to be loaded since testing the verifier is | |
| * not the focus here. | |
| */ | |
| int _version SEC("version") = 1; | |
| struct bpf_map_def SEC("maps") test_map_id = { | |
| .type = BPF_MAP_TYPE_ARRAY, | |
| .key_size = sizeof(__u32), | |
| .value_size = sizeof(__u64), | |
| .max_entries = 1, | |
| }; | |
| SEC("test_obj_id_dummy") | |
| int test_obj_id(struct __sk_buff *skb) | |
| { | |
| __u32 key = 0; | |
| __u64 *value; | |
| value = bpf_map_lookup_elem(&test_map_id, &key); | |
| return TC_ACT_OK; | |
| } |