linux/samples/bpf/bpf_load.h
Jakub Kicinski 2bf3e2ef42 samples: bpf: include bpf/bpf.h instead of local libbpf.h
There are two files in the tree called libbpf.h which is becoming
problematic.  Most samples don't actually need the local libbpf.h
they simply include it to get to bpf/bpf.h.  Include bpf/bpf.h
directly instead.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-05-14 22:52:10 -07:00

59 lines
1.6 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __BPF_LOAD_H
#define __BPF_LOAD_H
#include <bpf/bpf.h>
#define MAX_MAPS 32
#define MAX_PROGS 32
struct bpf_load_map_def {
unsigned int type;
unsigned int key_size;
unsigned int value_size;
unsigned int max_entries;
unsigned int map_flags;
unsigned int inner_map_idx;
unsigned int numa_node;
};
struct bpf_map_data {
int fd;
char *name;
size_t elf_offset;
struct bpf_load_map_def def;
};
typedef void (*fixup_map_cb)(struct bpf_map_data *map, int idx);
extern int prog_fd[MAX_PROGS];
extern int event_fd[MAX_PROGS];
extern char bpf_log_buf[BPF_LOG_BUF_SIZE];
extern int prog_cnt;
/* There is a one-to-one mapping between map_fd[] and map_data[].
* The map_data[] just contains more rich info on the given map.
*/
extern int map_fd[MAX_MAPS];
extern struct bpf_map_data map_data[MAX_MAPS];
extern int map_data_count;
/* parses elf file compiled by llvm .c->.o
* . parses 'maps' section and creates maps via BPF syscall
* . parses 'license' section and passes it to syscall
* . parses elf relocations for BPF maps and adjusts BPF_LD_IMM64 insns by
* storing map_fd into insn->imm and marking such insns as BPF_PSEUDO_MAP_FD
* . loads eBPF programs via BPF syscall
*
* One ELF file can contain multiple BPF programs which will be loaded
* and their FDs stored stored in prog_fd array
*
* returns zero on success
*/
int load_bpf_file(char *path);
int load_bpf_file_fixup_map(const char *path, fixup_map_cb fixup_map);
void read_trace_pipe(void);
int bpf_set_link_xdp_fd(int ifindex, int fd, __u32 flags);
#endif