| Martin KaFai Lau | 95b9afd | 2017-06-05 12:15:53 -0700 | [diff] [blame] | 1 | /* Copyright (c) 2017 Facebook |
| 2 | * |
| 3 | * This program is free software; you can redistribute it and/or |
| 4 | * modify it under the terms of version 2 of the GNU General Public |
| 5 | * License as published by the Free Software Foundation. |
| 6 | */ |
| 7 | #include <stddef.h> |
| 8 | #include <linux/bpf.h> |
| 9 | #include <linux/pkt_cls.h> |
| 10 | #include "bpf_helpers.h" |
| 11 | |
| 12 | /* It is a dumb bpf program such that it must have no |
| 13 | * issue to be loaded since testing the verifier is |
| 14 | * not the focus here. |
| 15 | */ |
| 16 | |
| 17 | int _version SEC("version") = 1; |
| 18 | |
| 19 | struct bpf_map_def SEC("maps") test_map_id = { |
| 20 | .type = BPF_MAP_TYPE_ARRAY, |
| 21 | .key_size = sizeof(__u32), |
| 22 | .value_size = sizeof(__u64), |
| 23 | .max_entries = 1, |
| 24 | }; |
| 25 | |
| Martin KaFai Lau | a2e8bbd | 2017-06-08 22:30:17 -0700 | [diff] [blame] | 26 | SEC("test_obj_id_dummy") |
| 27 | int test_obj_id(struct __sk_buff *skb) |
| Martin KaFai Lau | 95b9afd | 2017-06-05 12:15:53 -0700 | [diff] [blame] | 28 | { |
| 29 | __u32 key = 0; |
| 30 | __u64 *value; |
| 31 | |
| 32 | value = bpf_map_lookup_elem(&test_map_id, &key); |
| 33 | |
| 34 | return TC_ACT_OK; |
| 35 | } |