src/timesync/timesyncd-manager.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   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 struct Manager {
  28         sd_bus *bus;
  29         sd_event *event;
  30         sd_resolve *resolve;
  31
  32         LIST_HEAD(ServerName, system_servers);
  33         LIST_HEAD(ServerName, link_servers);
  34         LIST_HEAD(ServerName, fallback_servers);
  35
  36         bool have_fallbacks:1;
  37
  38         RateLimit ratelimit;
  39         bool exhausted_servers;
  40
  41         /* network */
  42         sd_event_source *network_event_source;
  43         sd_network_monitor *network_monitor;
  44
  45         /* peer */
  46         sd_resolve_query *resolve_query;
  47         sd_event_source *event_receive;
  48         ServerName *current_server_name;
  49         ServerAddress *current_server_address;
  50         int server_socket;
  51         int missed_replies;
  52         uint64_t packet_count;
  53         sd_event_source *event_timeout;
  54         bool good;
  55
  56         /* last sent packet */
  57         struct timespec trans_time_mon;
  58         struct timespec trans_time;
  59         usec_t retry_interval;
  60         bool pending;
  61
  62         /* poll timer */
  63         sd_event_source *event_timer;
  64         usec_t poll_interval_usec;
  65         usec_t poll_interval_min_usec;
  66         usec_t poll_interval_max_usec;
  67         bool poll_resync;
  68
  69         /* history data */
  70         struct {
  71                 double offset;
  72                 double delay;
  73         } samples[8];
  74         unsigned samples_idx;
  75         double samples_jitter;
  76         usec_t max_root_distance_usec;
  77
  78         /* last change */
  79         bool jumped;
  80         bool sync;
  81         int64_t drift_freq;
  82
  83         /* watch for time changes */
  84         sd_event_source *event_clock_watch;
  85         int clock_watch_fd;
  86
  87         /* Retry connections */
  88         sd_event_source *event_retry;
  89
  90         /* RTC runs in local time, leave it alone */
  91         bool rtc_local_time;
  92
  93         /* NTP response */
  94         struct ntp_msg ntpmsg;
  95         struct timespec origin_time, dest_time;
  96         bool spike;
  97 };
  98
  99 int manager_new(Manager **ret);
 100 void manager_free(Manager *m);
 101
 102 DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
 103
 104 void manager_set_server_name(Manager *m, ServerName *n);
 105 void manager_set_server_address(Manager *m, ServerAddress *a);
 106 void manager_flush_server_names(Manager *m, ServerType t);
 107
 108 int manager_connect(Manager *m);
 109 void manager_disconnect(Manager *m);