]>
Commit | Line | Data |
---|---|---|
1 | /* SPDX-License-Identifier: GPL-2.0 */ | |
2 | #ifndef __BPF_LOAD_H | |
3 | #define __BPF_LOAD_H | |
4 | ||
5 | #include "libbpf.h" | |
6 | ||
7 | #define MAX_MAPS 32 | |
8 | #define MAX_PROGS 32 | |
9 | ||
10 | struct bpf_map_def { | |
11 | unsigned int type; | |
12 | unsigned int key_size; | |
13 | unsigned int value_size; | |
14 | unsigned int max_entries; | |
15 | unsigned int map_flags; | |
16 | unsigned int inner_map_idx; | |
17 | unsigned int numa_node; | |
18 | }; | |
19 | ||
20 | struct bpf_map_data { | |
21 | int fd; | |
22 | char *name; | |
23 | size_t elf_offset; | |
24 | struct bpf_map_def def; | |
25 | }; | |
26 | ||
27 | typedef void (*fixup_map_cb)(struct bpf_map_data *map, int idx); | |
28 | ||
29 | extern int prog_fd[MAX_PROGS]; | |
30 | extern int event_fd[MAX_PROGS]; | |
31 | extern char bpf_log_buf[BPF_LOG_BUF_SIZE]; | |
32 | extern int prog_cnt; | |
33 | ||
34 | /* There is a one-to-one mapping between map_fd[] and map_data[]. | |
35 | * The map_data[] just contains more rich info on the given map. | |
36 | */ | |
37 | extern int map_fd[MAX_MAPS]; | |
38 | extern struct bpf_map_data map_data[MAX_MAPS]; | |
39 | extern int map_data_count; | |
40 | ||
41 | /* parses elf file compiled by llvm .c->.o | |
42 | * . parses 'maps' section and creates maps via BPF syscall | |
43 | * . parses 'license' section and passes it to syscall | |
44 | * . parses elf relocations for BPF maps and adjusts BPF_LD_IMM64 insns by | |
45 | * storing map_fd into insn->imm and marking such insns as BPF_PSEUDO_MAP_FD | |
46 | * . loads eBPF programs via BPF syscall | |
47 | * | |
48 | * One ELF file can contain multiple BPF programs which will be loaded | |
49 | * and their FDs stored stored in prog_fd array | |
50 | * | |
51 | * returns zero on success | |
52 | */ | |
53 | int load_bpf_file(char *path); | |
54 | int load_bpf_file_fixup_map(const char *path, fixup_map_cb fixup_map); | |
55 | ||
56 | void read_trace_pipe(void); | |
57 | struct ksym { | |
58 | long addr; | |
59 | char *name; | |
60 | }; | |
61 | ||
62 | int load_kallsyms(void); | |
63 | struct ksym *ksym_search(long key); | |
64 | int set_link_xdp_fd(int ifindex, int fd, __u32 flags); | |
65 | #endif |