| /* |
| * bpf_util.h BPF common code |
| * |
| * This program is free software; you can distribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| * |
| * Authors: Daniel Borkmann <daniel@iogearbox.net> |
| * Jiri Pirko <jiri@resnulli.us> |
| */ |
| |
| #ifndef __BPF_UTIL__ |
| #define __BPF_UTIL__ |
| |
| #include <linux/bpf.h> |
| #include <linux/filter.h> |
| #include <linux/magic.h> |
| #include <linux/elf-em.h> |
| #include <linux/if_alg.h> |
| |
| #include "utils.h" |
| #include "bpf_scm.h" |
| |
| #define BPF_ENV_UDS "TC_BPF_UDS" |
| #define BPF_ENV_MNT "TC_BPF_MNT" |
| |
| #ifndef BPF_MAX_LOG |
| # define BPF_MAX_LOG 4096 |
| #endif |
| |
| #define BPF_DIR_GLOBALS "globals" |
| |
| #ifndef BPF_FS_MAGIC |
| # define BPF_FS_MAGIC 0xcafe4a11 |
| #endif |
| |
| #define BPF_DIR_MNT "/sys/fs/bpf" |
| |
| #ifndef TRACEFS_MAGIC |
| # define TRACEFS_MAGIC 0x74726163 |
| #endif |
| |
| #define TRACE_DIR_MNT "/sys/kernel/tracing" |
| |
| #ifndef AF_ALG |
| # define AF_ALG 38 |
| #endif |
| |
| #ifndef EM_BPF |
| # define EM_BPF 247 |
| #endif |
| |
| struct bpf_cfg_ops { |
| void (*cbpf_cb)(void *nl, const struct sock_filter *ops, int ops_len); |
| void (*ebpf_cb)(void *nl, int fd, const char *annotation); |
| }; |
| |
| struct bpf_cfg_in { |
| const char *object; |
| const char *section; |
| const char *uds; |
| int argc; |
| char **argv; |
| struct sock_filter *ops; |
| }; |
| |
| int bpf_parse_common(enum bpf_prog_type type, struct bpf_cfg_in *cfg, |
| const struct bpf_cfg_ops *ops, void *nl); |
| |
| const char *bpf_prog_to_default_section(enum bpf_prog_type type); |
| |
| int bpf_graft_map(const char *map_path, uint32_t *key, int argc, char **argv); |
| int bpf_trace_pipe(void); |
| |
| void bpf_print_ops(FILE *f, struct rtattr *bpf_ops, __u16 len); |
| |
| #ifdef HAVE_ELF |
| int bpf_send_map_fds(const char *path, const char *obj); |
| int bpf_recv_map_fds(const char *path, int *fds, struct bpf_map_aux *aux, |
| unsigned int entries); |
| #else |
| static inline int bpf_send_map_fds(const char *path, const char *obj) |
| { |
| return 0; |
| } |
| |
| static inline int bpf_recv_map_fds(const char *path, int *fds, |
| struct bpf_map_aux *aux, |
| unsigned int entries) |
| { |
| return -1; |
| } |
| #endif /* HAVE_ELF */ |
| #endif /* __BPF_UTIL__ */ |