new file mode 100644
--- /dev/null
+++ b/src/core/ngx_bpf.h
@@ -0,0 +1,43 @@
+
+/*
+ * Copyright (C) Nginx, Inc.
+ */
+
+
+#ifndef _NGX_BPF_H_INCLUDED_
+#define _NGX_BPF_H_INCLUDED_
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+
+#include <linux/bpf.h>
+
+
+typedef struct {
+    char                *name;
+    int                  offset;
+} ngx_bpf_reloc_t;
+
+typedef struct {
+    char                *license;
+    enum bpf_prog_type   type;
+    struct bpf_insn     *ins;
+    size_t               nins;
+    ngx_bpf_reloc_t     *relocs;
+    size_t               nrelocs;
+} ngx_bpf_program_t;
+
+
+void ngx_bpf_program_link(ngx_bpf_program_t *program, const char *symbol,
+    int fd);
+int ngx_bpf_load_program(ngx_log_t *log, ngx_bpf_program_t *program);
+
+int ngx_bpf_map_create(ngx_log_t *log, enum bpf_map_type type, int key_size,
+    int value_size, int max_entries, uint32_t map_flags);
+int ngx_bpf_map_update(int fd, const void *key, const void *value,
+    uint64_t flags);
+int ngx_bpf_map_delete(int fd, const void *key);
+int ngx_bpf_map_lookup(int fd, const void *key, void *value);
+
+#endif /* _NGX_BPF_H_INCLUDED_ */