QUIC: improved debug logging. - wording in log->action is adjusted to match function names. - connection close steps are made obvious and start with "quic close" prefix: *1 quic close initiated rc:-4 *1 quic close silent drain:0 timedout:1 *1 quic close resumed rc:-1 *1 quic close resumed rc:-1 *1 quic close resumed rc:-4 *1 quic close completed this makes it easy to understand if particular "close" record is an initial cause or lasting process, or the final one. - cases of close without quic connection now logged as "packet rejected": *14 quic run *14 quic packet rx long flags:ec version:1 *14 quic packet rx hs len:61 *14 quic packet rx dcid len:20 00000000000002c32f60e4aa2b90a64a39dc4228 *14 quic packet rx scid len:8 81190308612cd019 *14 quic expected initial, got handshake *14 quic packet done rc:-1 level:hs decr:0 pn:0 perr:0 *14 quic packet rejected rc:-1, cleanup connection *14 reusable connection: 0 this makes it easy to spot early packet rejection and avoid confuse with quic connection closing (which in fact was not even created). - packet processing summary now uses same prefix "quic packet done rc:" - added debug to places where packet was rejected without any reason logged

/*
 * 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_ */