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/*
* tc_bpf.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 <dborkman@redhat.com>
* Jiri Pirko <jiri@resnulli.us>
*/
#ifndef _TC_BPF_H_
#define _TC_BPF_H_ 1
#include <linux/netlink.h>
#include <linux/bpf.h>
#include <linux/magic.h>
#include "utils.h"
#include "bpf_scm.h"
enum {
BPF_NLA_OPS_LEN = 0,
BPF_NLA_OPS,
BPF_NLA_FD,
BPF_NLA_NAME,
__BPF_NLA_MAX,
};
#define BPF_NLA_MAX __BPF_NLA_MAX
#define BPF_ENV_UDS "TC_BPF_UDS"
#define BPF_ENV_MNT "TC_BPF_MNT"
#define BPF_ENV_NOLOG "TC_BPF_NOLOG"
#ifndef BPF_FS_MAGIC
# define BPF_FS_MAGIC 0xcafe4a11
#endif
#define BPF_DIR_MNT "/sys/fs/bpf"
#define BPF_DIR_TC "tc"
#define BPF_DIR_GLOBALS "globals"
#ifndef TRACEFS_MAGIC
# define TRACEFS_MAGIC 0x74726163
#endif
#define TRACE_DIR_MNT "/sys/kernel/tracing"
int bpf_trace_pipe(void);
const char *bpf_default_section(const enum bpf_prog_type type);
int bpf_parse_common(int *ptr_argc, char ***ptr_argv, const int *nla_tbl,
enum bpf_prog_type type, const char **ptr_object,
const char **ptr_uds_name, struct nlmsghdr *n);
int bpf_graft_map(const char *map_path, uint32_t *key, int argc, char **argv);
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 /* _TC_BPF_H_ */
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