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Sync kernel header bpf.h to tools/include/uapi/linux/bpf.h and implement bpf_task_fd_query() in libbpf. The test programs in samples/bpf and tools/testing/selftests/bpf, and later bpftool will use this libbpf function to query kernel. Acked-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
114 lines
4.3 KiB
C
114 lines
4.3 KiB
C
/* SPDX-License-Identifier: LGPL-2.1 */
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/*
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* common eBPF ELF operations.
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*
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* Copyright (C) 2013-2015 Alexei Starovoitov <ast@kernel.org>
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* Copyright (C) 2015 Wang Nan <wangnan0@huawei.com>
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* Copyright (C) 2015 Huawei Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License (not later!)
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, see <http://www.gnu.org/licenses>
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*/
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#ifndef __BPF_BPF_H
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#define __BPF_BPF_H
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#include <linux/bpf.h>
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#include <stdbool.h>
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#include <stddef.h>
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struct bpf_create_map_attr {
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const char *name;
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enum bpf_map_type map_type;
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__u32 map_flags;
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__u32 key_size;
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__u32 value_size;
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__u32 max_entries;
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__u32 numa_node;
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__u32 btf_fd;
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__u32 btf_key_type_id;
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__u32 btf_value_type_id;
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__u32 map_ifindex;
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};
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int bpf_create_map_xattr(const struct bpf_create_map_attr *create_attr);
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int bpf_create_map_node(enum bpf_map_type map_type, const char *name,
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int key_size, int value_size, int max_entries,
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__u32 map_flags, int node);
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int bpf_create_map_name(enum bpf_map_type map_type, const char *name,
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int key_size, int value_size, int max_entries,
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__u32 map_flags);
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int bpf_create_map(enum bpf_map_type map_type, int key_size, int value_size,
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int max_entries, __u32 map_flags);
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int bpf_create_map_in_map_node(enum bpf_map_type map_type, const char *name,
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int key_size, int inner_map_fd, int max_entries,
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__u32 map_flags, int node);
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int bpf_create_map_in_map(enum bpf_map_type map_type, const char *name,
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int key_size, int inner_map_fd, int max_entries,
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__u32 map_flags);
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struct bpf_load_program_attr {
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enum bpf_prog_type prog_type;
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enum bpf_attach_type expected_attach_type;
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const char *name;
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const struct bpf_insn *insns;
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size_t insns_cnt;
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const char *license;
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__u32 kern_version;
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__u32 prog_ifindex;
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};
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/* Recommend log buffer size */
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#define BPF_LOG_BUF_SIZE (256 * 1024)
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int bpf_load_program_xattr(const struct bpf_load_program_attr *load_attr,
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char *log_buf, size_t log_buf_sz);
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int bpf_load_program(enum bpf_prog_type type, const struct bpf_insn *insns,
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size_t insns_cnt, const char *license,
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__u32 kern_version, char *log_buf,
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size_t log_buf_sz);
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int bpf_verify_program(enum bpf_prog_type type, const struct bpf_insn *insns,
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size_t insns_cnt, int strict_alignment,
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const char *license, __u32 kern_version,
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char *log_buf, size_t log_buf_sz, int log_level);
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int bpf_map_update_elem(int fd, const void *key, const void *value,
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__u64 flags);
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int bpf_map_lookup_elem(int fd, const void *key, void *value);
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int bpf_map_delete_elem(int fd, const void *key);
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int bpf_map_get_next_key(int fd, const void *key, void *next_key);
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int bpf_obj_pin(int fd, const char *pathname);
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int bpf_obj_get(const char *pathname);
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int bpf_prog_attach(int prog_fd, int attachable_fd, enum bpf_attach_type type,
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unsigned int flags);
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int bpf_prog_detach(int attachable_fd, enum bpf_attach_type type);
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int bpf_prog_detach2(int prog_fd, int attachable_fd, enum bpf_attach_type type);
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int bpf_prog_test_run(int prog_fd, int repeat, void *data, __u32 size,
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void *data_out, __u32 *size_out, __u32 *retval,
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__u32 *duration);
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int bpf_prog_get_next_id(__u32 start_id, __u32 *next_id);
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int bpf_map_get_next_id(__u32 start_id, __u32 *next_id);
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int bpf_prog_get_fd_by_id(__u32 id);
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int bpf_map_get_fd_by_id(__u32 id);
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int bpf_btf_get_fd_by_id(__u32 id);
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int bpf_obj_get_info_by_fd(int prog_fd, void *info, __u32 *info_len);
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int bpf_prog_query(int target_fd, enum bpf_attach_type type, __u32 query_flags,
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__u32 *attach_flags, __u32 *prog_ids, __u32 *prog_cnt);
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int bpf_raw_tracepoint_open(const char *name, int prog_fd);
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int bpf_load_btf(void *btf, __u32 btf_size, char *log_buf, __u32 log_buf_size,
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bool do_log);
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int bpf_task_fd_query(int pid, int fd, __u32 flags, char *buf, __u32 *buf_len,
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__u32 *prog_id, __u32 *fd_type, __u64 *probe_offset,
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__u64 *probe_addr);
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#endif
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