src/timesync/timesyncd-manager.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 /***
   5   This file is part of systemd.
   6
   7   Copyright 2014 Kay Sievers, Lennart Poettering
   8 ***/
   9
  10 #include "sd-event.h"
  11 #include "sd-network.h"
  12 #include "sd-resolve.h"
  13
  14 #include "list.h"
  15 #include "ratelimit.h"
  16 #include "time-util.h"
  17
  18 typedef struct Manager Manager;
  19
  20 #include "timesyncd-server.h"
  21
  22 /*
  23  * "A client MUST NOT under any conditions use a poll interval less
  24  * than 15 seconds."
  25  */
  26 #define NTP_POLL_INTERVAL_MIN_USEC      (32 * USEC_PER_SEC)
  27 #define NTP_POLL_INTERVAL_MAX_USEC      (2048 * USEC_PER_SEC)
  28
  29 struct Manager {
  30         sd_event *event;
  31         sd_resolve *resolve;
  32
  33         LIST_HEAD(ServerName, system_servers);
  34         LIST_HEAD(ServerName, link_servers);
  35         LIST_HEAD(ServerName, fallback_servers);
  36
  37         bool have_fallbacks:1;
  38
  39         RateLimit ratelimit;
  40         bool exhausted_servers;
  41
  42         /* network */
  43         sd_event_source *network_event_source;
  44         sd_network_monitor *network_monitor;
  45
  46         /* peer */
  47         sd_resolve_query *resolve_query;
  48         sd_event_source *event_receive;
  49         ServerName *current_server_name;
  50         ServerAddress *current_server_address;
  51         int server_socket;
  52         int missed_replies;
  53         uint64_t packet_count;
  54         sd_event_source *event_timeout;
  55         bool good;
  56
  57         /* last sent packet */
  58         struct timespec trans_time_mon;
  59         struct timespec trans_time;
  60         usec_t retry_interval;
  61         bool pending;
  62
  63         /* poll timer */
  64         sd_event_source *event_timer;
  65         usec_t poll_interval_usec;
  66         usec_t poll_interval_min_usec;
  67         usec_t poll_interval_max_usec;
  68         bool poll_resync;
  69
  70         /* history data */
  71         struct {
  72                 double offset;
  73                 double delay;
  74         } samples[8];
  75         unsigned int samples_idx;
  76         double samples_jitter;
  77         usec_t max_root_distance_usec;
  78
  79         /* last change */
  80         bool jumped;
  81         bool sync;
  82         int drift_ppm;
  83
  84         /* watch for time changes */
  85         sd_event_source *event_clock_watch;
  86         int clock_watch_fd;
  87
  88         /* Retry connections */
  89         sd_event_source *event_retry;
  90
  91         /* RTC runs in local time, leave it alone */
  92         bool rtc_local_time;
  93 };
  94
  95 int manager_new(Manager **ret);
  96 void manager_free(Manager *m);
  97
  98 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
  99
 100 void manager_set_server_name(Manager *m, ServerName *n);
 101 void manager_set_server_address(Manager *m, ServerAddress *a);
 102 void manager_flush_server_names(Manager *m, ServerType t);
 103
 104 int manager_connect(Manager *m);
 105 void manager_disconnect(Manager *m);