| /* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com |
| * |
| * 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. |
| */ |
| #ifndef _LINUX_BPF_H |
| #define _LINUX_BPF_H 1 |
| |
| #include <uapi/linux/bpf.h> |
| #include <linux/workqueue.h> |
| #include <linux/file.h> |
| |
| struct bpf_map; |
| |
| /* map is generic key/value storage optionally accesible by eBPF programs */ |
| struct bpf_map_ops { |
| /* funcs callable from userspace (via syscall) */ |
| struct bpf_map *(*map_alloc)(union bpf_attr *attr); |
| void (*map_free)(struct bpf_map *); |
| int (*map_get_next_key)(struct bpf_map *map, void *key, void *next_key); |
| |
| /* funcs callable from userspace and from eBPF programs */ |
| void *(*map_lookup_elem)(struct bpf_map *map, void *key); |
| int (*map_update_elem)(struct bpf_map *map, void *key, void *value); |
| int (*map_delete_elem)(struct bpf_map *map, void *key); |
| }; |
| |
| struct bpf_map { |
| atomic_t refcnt; |
| enum bpf_map_type map_type; |
| u32 key_size; |
| u32 value_size; |
| u32 max_entries; |
| struct bpf_map_ops *ops; |
| struct work_struct work; |
| }; |
| |
| struct bpf_map_type_list { |
| struct list_head list_node; |
| struct bpf_map_ops *ops; |
| enum bpf_map_type type; |
| }; |
| |
| void bpf_register_map_type(struct bpf_map_type_list *tl); |
| void bpf_map_put(struct bpf_map *map); |
| struct bpf_map *bpf_map_get(struct fd f); |
| |
| #endif /* _LINUX_BPF_H */ |