v4.19.13 snapshot.
diff --git a/tools/lib/bpf/bpf.h b/tools/lib/bpf/bpf.h
new file mode 100644
index 0000000..6f38164
--- /dev/null
+++ b/tools/lib/bpf/bpf.h
@@ -0,0 +1,114 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
+
+/*
+ * 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 __BPF_BPF_H
+#define __BPF_BPF_H
+
+#include <linux/bpf.h>
+#include <stdbool.h>
+#include <stddef.h>
+
+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;
+ __u32 inner_map_fd;
+};
+
+int bpf_create_map_xattr(const struct bpf_create_map_attr *create_attr);
+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);
+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);
+int bpf_create_map(enum bpf_map_type map_type, int key_size, int value_size,
+ int max_entries, __u32 map_flags);
+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);
+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;
+ __u32 kern_version;
+ __u32 prog_ifindex;
+};
+
+/* Recommend log buffer size */
+#define BPF_LOG_BUF_SIZE (256 * 1024)
+int bpf_load_program_xattr(const struct bpf_load_program_attr *load_attr,
+ char *log_buf, size_t log_buf_sz);
+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);
+int bpf_verify_program(enum bpf_prog_type type, const struct bpf_insn *insns,
+ size_t insns_cnt, int strict_alignment,
+ const char *license, __u32 kern_version,
+ char *log_buf, size_t log_buf_sz, int log_level);
+
+int bpf_map_update_elem(int fd, const void *key, const void *value,
+ __u64 flags);
+
+int bpf_map_lookup_elem(int fd, const void *key, void *value);
+int bpf_map_delete_elem(int fd, const void *key);
+int bpf_map_get_next_key(int fd, const void *key, void *next_key);
+int bpf_obj_pin(int fd, const char *pathname);
+int bpf_obj_get(const char *pathname);
+int bpf_prog_attach(int prog_fd, int attachable_fd, enum bpf_attach_type type,
+ unsigned int flags);
+int bpf_prog_detach(int attachable_fd, enum bpf_attach_type type);
+int bpf_prog_detach2(int prog_fd, int attachable_fd, enum bpf_attach_type type);
+int bpf_prog_test_run(int prog_fd, int repeat, void *data, __u32 size,
+ void *data_out, __u32 *size_out, __u32 *retval,
+ __u32 *duration);
+int bpf_prog_get_next_id(__u32 start_id, __u32 *next_id);
+int bpf_map_get_next_id(__u32 start_id, __u32 *next_id);
+int bpf_prog_get_fd_by_id(__u32 id);
+int bpf_map_get_fd_by_id(__u32 id);
+int bpf_btf_get_fd_by_id(__u32 id);
+int bpf_obj_get_info_by_fd(int prog_fd, void *info, __u32 *info_len);
+int bpf_prog_query(int target_fd, enum bpf_attach_type type, __u32 query_flags,
+ __u32 *attach_flags, __u32 *prog_ids, __u32 *prog_cnt);
+int bpf_raw_tracepoint_open(const char *name, int prog_fd);
+int bpf_load_btf(void *btf, __u32 btf_size, char *log_buf, __u32 log_buf_size,
+ bool do_log);
+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);
+#endif