X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Ftimesync%2Ftimesyncd-manager.c;h=a5678ccaed5ede60adadeeb5cb3132d916c1a809;hb=ab4df227d466e881e4279821b5fc1563f0e7e933;hp=3261bc1fb12edc221e11a0ed25d5eaa832fd43f3;hpb=80cd2606b91ce2735a0609c6f964917cf12685aa;p=elogind.git

diff --git a/src/timesync/timesyncd-manager.c b/src/timesync/timesyncd-manager.c
index 3261bc1fb..a5678ccae 100644
--- a/src/timesync/timesyncd-manager.c
+++ b/src/timesync/timesyncd-manager.c
@@ -209,6 +209,19 @@ static int manager_send_request(Manager *m) {
                 return manager_connect(m);
         }
 
+        /* re-arm timer with increasing timeout, in case the packets never arrive back */
+        if (m->retry_interval > 0) {
+                if (m->retry_interval < NTP_POLL_INTERVAL_MAX_SEC * USEC_PER_SEC)
+                        m->retry_interval *= 2;
+        } else
+                m->retry_interval = NTP_POLL_INTERVAL_MIN_SEC * USEC_PER_SEC;
+
+        r = manager_arm_timer(m, m->retry_interval);
+        if (r < 0) {
+                log_error("Failed to rearm timer: %s", strerror(-r));
+                return r;
+        }
+
         m->missed_replies++;
         if (m->missed_replies > NTP_MAX_MISSED_REPLIES) {
                 r = sd_event_add_time(
@@ -596,6 +609,7 @@ static int manager_receive_response(sd_event_source *source, int fd, uint32_t re
 
         /* valid packet */
         m->pending = false;
+        m->retry_interval = 0;
 
         /* announce leap seconds */
         if (NTP_FIELD_LEAP(ntpmsg.field) & NTP_LEAP_PLUSSEC)