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From 355043d3d3778d4516ab410c7da461d53f0de0a9 Mon Sep 17 00:00:00 2001
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From: Michal Schmidt <mschmidt@redhat.com>
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Date: Wed, 10 Sep 2014 19:10:05 +0200
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Subject: [PATCH] timesyncd: fix calculation of transmit time
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Upstream commit:
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commit 73c76e6330d31e1d04454fd7408dd56b4eedca9f
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Author: Miroslav Lichvar <mlichvar@redhat.com>
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Date: Wed Aug 27 16:47:18 2014 +0200
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timesyncd: fix calculation of transmit time
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The kernel timestamp (recv_time) is made earlier than current time
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(now_ts), use the timestamp captured before sending packet directly.
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---
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src/timesync/timesyncd.c | 4 +---
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1 file changed, 1 insertion(+), 3 deletions(-)
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diff --git a/src/timesync/timesyncd.c b/src/timesync/timesyncd.c
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index dc00b2f1f3..d123f0a3fc 100644
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--- a/src/timesync/timesyncd.c
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+++ b/src/timesync/timesyncd.c
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@@ -565,7 +565,6 @@ static int manager_receive_response(sd_event_source *source, int fd, uint32_t re
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.msg_namelen = sizeof(server_addr),
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};
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struct cmsghdr *cmsg;
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- struct timespec now_ts;
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struct timeval *recv_time;
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ssize_t len;
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double origin, receive, trans, dest;
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@@ -678,8 +677,7 @@ static int manager_receive_response(sd_event_source *source, int fd, uint32_t re
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* The round-trip delay, d, and system clock offset, t, are defined as:
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* d = (T4 - T1) - (T3 - T2) t = ((T2 - T1) + (T3 - T4)) / 2"
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*/
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- assert_se(clock_gettime(clock_boottime_or_monotonic(), &now_ts) >= 0);
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- origin = tv_to_d(recv_time) - (ts_to_d(&now_ts) - ts_to_d(&m->trans_time_mon)) + OFFSET_1900_1970;
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+ origin = ts_to_d(&m->trans_time) + OFFSET_1900_1970;
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receive = ntp_ts_to_d(&ntpmsg.recv_time);
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trans = ntp_ts_to_d(&ntpmsg.trans_time);
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dest = tv_to_d(recv_time) + OFFSET_1900_1970;
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