src/timesync/timesyncd-manager.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 /***
   5   Copyright 2014 Kay Sievers
   6 ***/
   7
   8 #include <sys/timex.h>
   9
  10 #include "sd-bus.h"
  11 #include "sd-event.h"
  12 #include "sd-network.h"
  13 #include "sd-resolve.h"
  14
  15 #include "list.h"
  16 #include "ratelimit.h"
  17 #include "time-util.h"
  18 #include "timesyncd-ntp-message.h"
  19
  20 typedef struct Manager Manager;
  21
  22 #include "timesyncd-server.h"
  23
  24 /*
  25  * "A client MUST NOT under any conditions use a poll interval less
  26  * than 15 seconds."
  27  */
  28 #define NTP_POLL_INTERVAL_MIN_USEC      (32 * USEC_PER_SEC)
  29 #define NTP_POLL_INTERVAL_MAX_USEC      (2048 * USEC_PER_SEC)
  30
  31 struct Manager {
  32         sd_bus *bus;
  33         sd_event *event;
  34         sd_resolve *resolve;
  35
  36         LIST_HEAD(ServerName, system_servers);
  37         LIST_HEAD(ServerName, link_servers);
  38         LIST_HEAD(ServerName, fallback_servers);
  39
  40         bool have_fallbacks:1;
  41
  42         RateLimit ratelimit;
  43         bool exhausted_servers;
  44
  45         /* network */
  46         sd_event_source *network_event_source;
  47         sd_network_monitor *network_monitor;
  48
  49         /* peer */
  50         sd_resolve_query *resolve_query;
  51         sd_event_source *event_receive;
  52         ServerName *current_server_name;
  53         ServerAddress *current_server_address;
  54         int server_socket;
  55         int missed_replies;
  56         uint64_t packet_count;
  57         sd_event_source *event_timeout;
  58         bool good;
  59
  60         /* last sent packet */
  61         struct timespec trans_time_mon;
  62         struct timespec trans_time;
  63         usec_t retry_interval;
  64         bool pending;
  65
  66         /* poll timer */
  67         sd_event_source *event_timer;
  68         usec_t poll_interval_usec;
  69         usec_t poll_interval_min_usec;
  70         usec_t poll_interval_max_usec;
  71         bool poll_resync;
  72
  73         /* history data */
  74         struct {
  75                 double offset;
  76                 double delay;
  77         } samples[8];
  78         unsigned int samples_idx;
  79         double samples_jitter;
  80         usec_t max_root_distance_usec;
  81
  82         /* last change */
  83         bool jumped;
  84         bool sync;
  85         long drift_freq;
  86
  87         /* watch for time changes */
  88         sd_event_source *event_clock_watch;
  89         int clock_watch_fd;
  90
  91         /* Retry connections */
  92         sd_event_source *event_retry;
  93
  94         /* RTC runs in local time, leave it alone */
  95         bool rtc_local_time;
  96
  97         /* NTP response */
  98         struct ntp_msg ntpmsg;
  99         struct timespec origin_time, dest_time;
 100         bool spike;
 101 };
 102
 103 int manager_new(Manager **ret);
 104 void manager_free(Manager *m);
 105
 106 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
 107
 108 void manager_set_server_name(Manager *m, ServerName *n);
 109 void manager_set_server_address(Manager *m, ServerAddress *a);
 110 void manager_flush_server_names(Manager *m, ServerType t);
 111
 112 int manager_connect(Manager *m);
 113 void manager_disconnect(Manager *m);