mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 12:14:01 +08:00
a535909142
This adds support for supplying a target btf ID for the bpf_link_create() operation, and adds a new bpf_program__attach_freplace() high-level API for attaching freplace functions with a target. Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/160138355387.48470.18026176785351166890.stgit@toke.dk
286 lines
9.7 KiB
C
286 lines
9.7 KiB
C
/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */
|
|
|
|
/*
|
|
* common eBPF ELF operations.
|
|
*
|
|
* Copyright (C) 2013-2015 Alexei Starovoitov <ast@kernel.org>
|
|
* Copyright (C) 2015 Wang Nan <wangnan0@huawei.com>
|
|
* Copyright (C) 2015 Huawei Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation;
|
|
* version 2.1 of the License (not later!)
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this program; if not, see <http://www.gnu.org/licenses>
|
|
*/
|
|
#ifndef __LIBBPF_BPF_H
|
|
#define __LIBBPF_BPF_H
|
|
|
|
#include <linux/bpf.h>
|
|
#include <stdbool.h>
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
|
|
#include "libbpf_common.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
struct bpf_create_map_attr {
|
|
const char *name;
|
|
enum bpf_map_type map_type;
|
|
__u32 map_flags;
|
|
__u32 key_size;
|
|
__u32 value_size;
|
|
__u32 max_entries;
|
|
__u32 numa_node;
|
|
__u32 btf_fd;
|
|
__u32 btf_key_type_id;
|
|
__u32 btf_value_type_id;
|
|
__u32 map_ifindex;
|
|
union {
|
|
__u32 inner_map_fd;
|
|
__u32 btf_vmlinux_value_type_id;
|
|
};
|
|
};
|
|
|
|
LIBBPF_API int
|
|
bpf_create_map_xattr(const struct bpf_create_map_attr *create_attr);
|
|
LIBBPF_API int bpf_create_map_node(enum bpf_map_type map_type, const char *name,
|
|
int key_size, int value_size,
|
|
int max_entries, __u32 map_flags, int node);
|
|
LIBBPF_API int bpf_create_map_name(enum bpf_map_type map_type, const char *name,
|
|
int key_size, int value_size,
|
|
int max_entries, __u32 map_flags);
|
|
LIBBPF_API int bpf_create_map(enum bpf_map_type map_type, int key_size,
|
|
int value_size, int max_entries, __u32 map_flags);
|
|
LIBBPF_API int bpf_create_map_in_map_node(enum bpf_map_type map_type,
|
|
const char *name, int key_size,
|
|
int inner_map_fd, int max_entries,
|
|
__u32 map_flags, int node);
|
|
LIBBPF_API int bpf_create_map_in_map(enum bpf_map_type map_type,
|
|
const char *name, int key_size,
|
|
int inner_map_fd, int max_entries,
|
|
__u32 map_flags);
|
|
|
|
struct bpf_load_program_attr {
|
|
enum bpf_prog_type prog_type;
|
|
enum bpf_attach_type expected_attach_type;
|
|
const char *name;
|
|
const struct bpf_insn *insns;
|
|
size_t insns_cnt;
|
|
const char *license;
|
|
union {
|
|
__u32 kern_version;
|
|
__u32 attach_prog_fd;
|
|
};
|
|
union {
|
|
__u32 prog_ifindex;
|
|
__u32 attach_btf_id;
|
|
};
|
|
__u32 prog_btf_fd;
|
|
__u32 func_info_rec_size;
|
|
const void *func_info;
|
|
__u32 func_info_cnt;
|
|
__u32 line_info_rec_size;
|
|
const void *line_info;
|
|
__u32 line_info_cnt;
|
|
__u32 log_level;
|
|
__u32 prog_flags;
|
|
};
|
|
|
|
/* Flags to direct loading requirements */
|
|
#define MAPS_RELAX_COMPAT 0x01
|
|
|
|
/* Recommend log buffer size */
|
|
#define BPF_LOG_BUF_SIZE (UINT32_MAX >> 8) /* verifier maximum in kernels <= 5.1 */
|
|
LIBBPF_API int
|
|
bpf_load_program_xattr(const struct bpf_load_program_attr *load_attr,
|
|
char *log_buf, size_t log_buf_sz);
|
|
LIBBPF_API int bpf_load_program(enum bpf_prog_type type,
|
|
const struct bpf_insn *insns, size_t insns_cnt,
|
|
const char *license, __u32 kern_version,
|
|
char *log_buf, size_t log_buf_sz);
|
|
LIBBPF_API int bpf_verify_program(enum bpf_prog_type type,
|
|
const struct bpf_insn *insns,
|
|
size_t insns_cnt, __u32 prog_flags,
|
|
const char *license, __u32 kern_version,
|
|
char *log_buf, size_t log_buf_sz,
|
|
int log_level);
|
|
|
|
LIBBPF_API int bpf_map_update_elem(int fd, const void *key, const void *value,
|
|
__u64 flags);
|
|
|
|
LIBBPF_API int bpf_map_lookup_elem(int fd, const void *key, void *value);
|
|
LIBBPF_API int bpf_map_lookup_elem_flags(int fd, const void *key, void *value,
|
|
__u64 flags);
|
|
LIBBPF_API int bpf_map_lookup_and_delete_elem(int fd, const void *key,
|
|
void *value);
|
|
LIBBPF_API int bpf_map_delete_elem(int fd, const void *key);
|
|
LIBBPF_API int bpf_map_get_next_key(int fd, const void *key, void *next_key);
|
|
LIBBPF_API int bpf_map_freeze(int fd);
|
|
|
|
struct bpf_map_batch_opts {
|
|
size_t sz; /* size of this struct for forward/backward compatibility */
|
|
__u64 elem_flags;
|
|
__u64 flags;
|
|
};
|
|
#define bpf_map_batch_opts__last_field flags
|
|
|
|
LIBBPF_API int bpf_map_delete_batch(int fd, void *keys,
|
|
__u32 *count,
|
|
const struct bpf_map_batch_opts *opts);
|
|
LIBBPF_API int bpf_map_lookup_batch(int fd, void *in_batch, void *out_batch,
|
|
void *keys, void *values, __u32 *count,
|
|
const struct bpf_map_batch_opts *opts);
|
|
LIBBPF_API int bpf_map_lookup_and_delete_batch(int fd, void *in_batch,
|
|
void *out_batch, void *keys,
|
|
void *values, __u32 *count,
|
|
const struct bpf_map_batch_opts *opts);
|
|
LIBBPF_API int bpf_map_update_batch(int fd, void *keys, void *values,
|
|
__u32 *count,
|
|
const struct bpf_map_batch_opts *opts);
|
|
|
|
LIBBPF_API int bpf_obj_pin(int fd, const char *pathname);
|
|
LIBBPF_API int bpf_obj_get(const char *pathname);
|
|
|
|
struct bpf_prog_attach_opts {
|
|
size_t sz; /* size of this struct for forward/backward compatibility */
|
|
unsigned int flags;
|
|
int replace_prog_fd;
|
|
};
|
|
#define bpf_prog_attach_opts__last_field replace_prog_fd
|
|
|
|
LIBBPF_API int bpf_prog_attach(int prog_fd, int attachable_fd,
|
|
enum bpf_attach_type type, unsigned int flags);
|
|
LIBBPF_API int bpf_prog_attach_xattr(int prog_fd, int attachable_fd,
|
|
enum bpf_attach_type type,
|
|
const struct bpf_prog_attach_opts *opts);
|
|
LIBBPF_API int bpf_prog_detach(int attachable_fd, enum bpf_attach_type type);
|
|
LIBBPF_API int bpf_prog_detach2(int prog_fd, int attachable_fd,
|
|
enum bpf_attach_type type);
|
|
|
|
union bpf_iter_link_info; /* defined in up-to-date linux/bpf.h */
|
|
struct bpf_link_create_opts {
|
|
size_t sz; /* size of this struct for forward/backward compatibility */
|
|
__u32 flags;
|
|
union bpf_iter_link_info *iter_info;
|
|
__u32 iter_info_len;
|
|
__u32 target_btf_id;
|
|
};
|
|
#define bpf_link_create_opts__last_field target_btf_id
|
|
|
|
LIBBPF_API int bpf_link_create(int prog_fd, int target_fd,
|
|
enum bpf_attach_type attach_type,
|
|
const struct bpf_link_create_opts *opts);
|
|
|
|
LIBBPF_API int bpf_link_detach(int link_fd);
|
|
|
|
struct bpf_link_update_opts {
|
|
size_t sz; /* size of this struct for forward/backward compatibility */
|
|
__u32 flags; /* extra flags */
|
|
__u32 old_prog_fd; /* expected old program FD */
|
|
};
|
|
#define bpf_link_update_opts__last_field old_prog_fd
|
|
|
|
LIBBPF_API int bpf_link_update(int link_fd, int new_prog_fd,
|
|
const struct bpf_link_update_opts *opts);
|
|
|
|
LIBBPF_API int bpf_iter_create(int link_fd);
|
|
|
|
struct bpf_prog_test_run_attr {
|
|
int prog_fd;
|
|
int repeat;
|
|
const void *data_in;
|
|
__u32 data_size_in;
|
|
void *data_out; /* optional */
|
|
__u32 data_size_out; /* in: max length of data_out
|
|
* out: length of data_out */
|
|
__u32 retval; /* out: return code of the BPF program */
|
|
__u32 duration; /* out: average per repetition in ns */
|
|
const void *ctx_in; /* optional */
|
|
__u32 ctx_size_in;
|
|
void *ctx_out; /* optional */
|
|
__u32 ctx_size_out; /* in: max length of ctx_out
|
|
* out: length of cxt_out */
|
|
};
|
|
|
|
LIBBPF_API int bpf_prog_test_run_xattr(struct bpf_prog_test_run_attr *test_attr);
|
|
|
|
/*
|
|
* bpf_prog_test_run does not check that data_out is large enough. Consider
|
|
* using bpf_prog_test_run_xattr instead.
|
|
*/
|
|
LIBBPF_API int bpf_prog_test_run(int prog_fd, int repeat, void *data,
|
|
__u32 size, void *data_out, __u32 *size_out,
|
|
__u32 *retval, __u32 *duration);
|
|
LIBBPF_API int bpf_prog_get_next_id(__u32 start_id, __u32 *next_id);
|
|
LIBBPF_API int bpf_map_get_next_id(__u32 start_id, __u32 *next_id);
|
|
LIBBPF_API int bpf_btf_get_next_id(__u32 start_id, __u32 *next_id);
|
|
LIBBPF_API int bpf_link_get_next_id(__u32 start_id, __u32 *next_id);
|
|
LIBBPF_API int bpf_prog_get_fd_by_id(__u32 id);
|
|
LIBBPF_API int bpf_map_get_fd_by_id(__u32 id);
|
|
LIBBPF_API int bpf_btf_get_fd_by_id(__u32 id);
|
|
LIBBPF_API int bpf_link_get_fd_by_id(__u32 id);
|
|
LIBBPF_API int bpf_obj_get_info_by_fd(int bpf_fd, void *info, __u32 *info_len);
|
|
LIBBPF_API int bpf_prog_query(int target_fd, enum bpf_attach_type type,
|
|
__u32 query_flags, __u32 *attach_flags,
|
|
__u32 *prog_ids, __u32 *prog_cnt);
|
|
LIBBPF_API int bpf_raw_tracepoint_open(const char *name, int prog_fd);
|
|
LIBBPF_API int bpf_load_btf(const void *btf, __u32 btf_size, char *log_buf,
|
|
__u32 log_buf_size, bool do_log);
|
|
LIBBPF_API int bpf_task_fd_query(int pid, int fd, __u32 flags, char *buf,
|
|
__u32 *buf_len, __u32 *prog_id, __u32 *fd_type,
|
|
__u64 *probe_offset, __u64 *probe_addr);
|
|
|
|
enum bpf_stats_type; /* defined in up-to-date linux/bpf.h */
|
|
LIBBPF_API int bpf_enable_stats(enum bpf_stats_type type);
|
|
|
|
struct bpf_prog_bind_opts {
|
|
size_t sz; /* size of this struct for forward/backward compatibility */
|
|
__u32 flags;
|
|
};
|
|
#define bpf_prog_bind_opts__last_field flags
|
|
|
|
LIBBPF_API int bpf_prog_bind_map(int prog_fd, int map_fd,
|
|
const struct bpf_prog_bind_opts *opts);
|
|
|
|
struct bpf_test_run_opts {
|
|
size_t sz; /* size of this struct for forward/backward compatibility */
|
|
const void *data_in; /* optional */
|
|
void *data_out; /* optional */
|
|
__u32 data_size_in;
|
|
__u32 data_size_out; /* in: max length of data_out
|
|
* out: length of data_out
|
|
*/
|
|
const void *ctx_in; /* optional */
|
|
void *ctx_out; /* optional */
|
|
__u32 ctx_size_in;
|
|
__u32 ctx_size_out; /* in: max length of ctx_out
|
|
* out: length of cxt_out
|
|
*/
|
|
__u32 retval; /* out: return code of the BPF program */
|
|
int repeat;
|
|
__u32 duration; /* out: average per repetition in ns */
|
|
__u32 flags;
|
|
__u32 cpu;
|
|
};
|
|
#define bpf_test_run_opts__last_field cpu
|
|
|
|
LIBBPF_API int bpf_prog_test_run_opts(int prog_fd,
|
|
struct bpf_test_run_opts *opts);
|
|
|
|
#ifdef __cplusplus
|
|
} /* extern "C" */
|
|
#endif
|
|
|
|
#endif /* __LIBBPF_BPF_H */
|