src/timesync/timesyncd-manager.h

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2 #pragma once
   3
   4 #include <sys/timex.h>
   5
   6 #include "sd-bus.h"
   7 #include "sd-event.h"
   8 #include "sd-network.h"
   9 #include "sd-resolve.h"
  10
  11 #include "list.h"
  12 #include "ratelimit.h"
  13 #include "time-util.h"
  14 #include "timesyncd-ntp-message.h"
  15
  16 typedef struct Manager Manager;
  17
  18 #include "timesyncd-server.h"
  19
  20 /*
  21  * "A client MUST NOT under any conditions use a poll interval less
  22  * than 15 seconds."
  23  */
  24 #define NTP_POLL_INTERVAL_MIN_USEC      (32 * USEC_PER_SEC)
  25 #define NTP_POLL_INTERVAL_MAX_USEC      (2048 * USEC_PER_SEC)
  26
  27 #define NTP_RETRY_INTERVAL_MIN_USEC     (15 * USEC_PER_SEC)
  28 #define NTP_RETRY_INTERVAL_MAX_USEC     (6 * 60 * USEC_PER_SEC) /* 6 minutes */
  29
  30 struct Manager {
  31         sd_bus *bus;
  32         sd_event *event;
  33         sd_resolve *resolve;
  34
  35         LIST_HEAD(ServerName, system_servers);
  36         LIST_HEAD(ServerName, link_servers);
  37         LIST_HEAD(ServerName, fallback_servers);
  38
  39         bool have_fallbacks:1;
  40
  41         RateLimit ratelimit;
  42         bool exhausted_servers;
  43
  44         /* network */
  45         sd_event_source *network_event_source;
  46         sd_network_monitor *network_monitor;
  47
  48         /* peer */
  49         sd_resolve_query *resolve_query;
  50         sd_event_source *event_receive;
  51         ServerName *current_server_name;
  52         ServerAddress *current_server_address;
  53         int server_socket;
  54         int missed_replies;
  55         uint64_t packet_count;
  56         sd_event_source *event_timeout;
  57         bool good;
  58
  59         /* last sent packet */
  60         struct timespec trans_time_mon;
  61         struct timespec trans_time;
  62         usec_t retry_interval;
  63         bool pending;
  64
  65         /* poll timer */
  66         sd_event_source *event_timer;
  67         usec_t poll_interval_usec;
  68         usec_t poll_interval_min_usec;
  69         usec_t poll_interval_max_usec;
  70         bool poll_resync;
  71
  72         /* history data */
  73         struct {
  74                 double offset;
  75                 double delay;
  76         } samples[8];
  77         unsigned samples_idx;
  78         double samples_jitter;
  79         usec_t max_root_distance_usec;
  80
  81         /* last change */
  82         bool jumped;
  83         bool sync;
  84         int64_t drift_freq;
  85
  86         /* watch for time changes */
  87         sd_event_source *event_clock_watch;
  88         int clock_watch_fd;
  89
  90         /* Retry connections */
  91         sd_event_source *event_retry;
  92
  93         /* RTC runs in local time, leave it alone */
  94         bool rtc_local_time;
  95
  96         /* NTP response */
  97         struct ntp_msg ntpmsg;
  98         struct timespec origin_time, dest_time;
  99         bool spike;
 100 };
 101
 102 int manager_new(Manager **ret);
 103 void manager_free(Manager *m);
 104
 105 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
 106
 107 void manager_set_server_name(Manager *m, ServerName *n);
 108 void manager_set_server_address(Manager *m, ServerAddress *a);
 109 void manager_flush_server_names(Manager *m, ServerType t);
 110
 111 int manager_connect(Manager *m);
 112 void manager_disconnect(Manager *m);