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99c55f7d AS |
1 | /* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com |
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 | #ifndef _LINUX_BPF_H | |
8 | #define _LINUX_BPF_H 1 | |
9 | ||
10 | #include <uapi/linux/bpf.h> | |
11 | #include <linux/workqueue.h> | |
db20fd2b | 12 | #include <linux/file.h> |
99c55f7d AS |
13 | |
14 | struct bpf_map; | |
15 | ||
16 | /* map is generic key/value storage optionally accesible by eBPF programs */ | |
17 | struct bpf_map_ops { | |
18 | /* funcs callable from userspace (via syscall) */ | |
19 | struct bpf_map *(*map_alloc)(union bpf_attr *attr); | |
20 | void (*map_free)(struct bpf_map *); | |
db20fd2b AS |
21 | int (*map_get_next_key)(struct bpf_map *map, void *key, void *next_key); |
22 | ||
23 | /* funcs callable from userspace and from eBPF programs */ | |
24 | void *(*map_lookup_elem)(struct bpf_map *map, void *key); | |
25 | int (*map_update_elem)(struct bpf_map *map, void *key, void *value); | |
26 | int (*map_delete_elem)(struct bpf_map *map, void *key); | |
99c55f7d AS |
27 | }; |
28 | ||
29 | struct bpf_map { | |
30 | atomic_t refcnt; | |
31 | enum bpf_map_type map_type; | |
32 | u32 key_size; | |
33 | u32 value_size; | |
34 | u32 max_entries; | |
35 | struct bpf_map_ops *ops; | |
36 | struct work_struct work; | |
37 | }; | |
38 | ||
39 | struct bpf_map_type_list { | |
40 | struct list_head list_node; | |
41 | struct bpf_map_ops *ops; | |
42 | enum bpf_map_type type; | |
43 | }; | |
44 | ||
45 | void bpf_register_map_type(struct bpf_map_type_list *tl); | |
46 | void bpf_map_put(struct bpf_map *map); | |
db20fd2b | 47 | struct bpf_map *bpf_map_get(struct fd f); |
99c55f7d AS |
48 | |
49 | #endif /* _LINUX_BPF_H */ |