Mercurial > hg > nginx
diff src/core/ngx_bpf.h @ 8675:d3747ba486e7 quic
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> |
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date | Tue, 15 Dec 2020 15:23:07 +0300 |
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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_ */