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annotate src/core/ngx_bpf.h @ 8675:d3747ba486e7 quic

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Core: added interface to linux bpf() system call. It contains wrappers for operations with BPF maps and for loading BPF programs.
author Vladimir Homutov <vl@nginx.com>
date Tue, 15 Dec 2020 15:23:07 +0300
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8675
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2 /*
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3 * Copyright (C) Nginx, Inc.
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4 */
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7 #ifndef _NGX_BPF_H_INCLUDED_
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8 #define _NGX_BPF_H_INCLUDED_
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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14 #include <linux/bpf.h>
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17 typedef struct {
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18 char *name;
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19 int offset;
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20 } ngx_bpf_reloc_t;
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22 typedef struct {
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23 char *license;
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24 enum bpf_prog_type type;
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25 struct bpf_insn *ins;
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26 size_t nins;
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27 ngx_bpf_reloc_t *relocs;
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28 size_t nrelocs;
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29 } ngx_bpf_program_t;
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32 void ngx_bpf_program_link(ngx_bpf_program_t *program, const char *symbol,
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33 int fd);
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34 int ngx_bpf_load_program(ngx_log_t *log, ngx_bpf_program_t *program);
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36 int ngx_bpf_map_create(ngx_log_t *log, enum bpf_map_type type, int key_size,
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37 int value_size, int max_entries, uint32_t map_flags);
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38 int ngx_bpf_map_update(int fd, const void *key, const void *value,
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39 uint64_t flags);
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40 int ngx_bpf_map_delete(int fd, const void *key);
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41 int ngx_bpf_map_lookup(int fd, const void *key, void *value);
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43 #endif /* _NGX_BPF_H_INCLUDED_ */