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- Log -----------------------------------------------------------------
commit 219085b8f67e019cf483d18d98ced07c4457d1d5
Author: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
Date: Mon Nov 15 10:11:03 2021 +0100
test: add 144-exp1 test
commit 2319f72b29a97059c759902bab410a425a9035e9
Author: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
Date: Mon Nov 15 10:08:34 2021 +0100
ntp: add client support for experimental extension field
Add "extfield F323" option to include the new extension field in
requests. If the server responds with this field, use the root
delay/dispersion and monotonic timestamp. Accumulate changes in the
offset between the monotonic and real-time receive timestamps and use
it for the correction of previous offsets in sourcestats. In the
interleaved mode, cancel out the latest change in the offset in
timestamps of the previous request and response, which were captured
before the change actually happened.
commit 72f7d09f58cbd869e022dca38a9a68a5f8091ef8
Author: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
Date: Wed Nov 10 15:34:26 2021 +0100
sourcestats: add function to correct accumulated offsets
This will be needed to follow server time corrections in order to
better estimate frequency.
commit 0bf39c0ab93f0ed4a9b235b1187762586d24b688
Author: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
Date: Wed Nov 10 14:56:31 2021 +0100
ntp: add server support for experimental extension field
Maintain a server monotonic timescale needed for the experimental
extension field. It follows the best estimate of frequency without
time corrections. Implement it as an offset relative to the NTP time,
starting at zero, using a slew handler to cancel time corrections of the
NTP clock. The 32-bit epoch ID is set to a random value on start and
every step of the system clock.
commit 2e126ed2b53bab906c315b5f3e144b29f203d2f4
Author: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
Date: Mon Nov 15 10:25:35 2021 +0100
util: add functions for converting new root delay/dispersion
commit a652ce7d0efaa0074dc52b857de7a9b3cb6eea96
Author: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
Date: Wed Nov 10 14:28:53 2021 +0100
util: add function to subtract NTP timestamps
This will be needed to work with monotonic timestamps, which don't have
a stable epoch and cannot be converted to timespec.
commit a97ca73704c3add23e52fafe0fa87aca7aaa254e
Author: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
Date: Wed Nov 10 14:52:04 2021 +0100
ntp: add pre-NTPv5 experimental extension field
Add an experimental extension field for some features that were proposed
for NTPv5. Higher-resolution root delay and dispersion (using 28-bit
fraction) are added. A monotonic receive timestamp will allow a
frequency transfer between the server and client. The client will be
able to separate the server's time corrections from frequency
corrections by tracking the offset between the real-time and monotonic
receive timestamps.
The field has a type of 0xF323 from the new experimental range proposed
by the NTP working group. Include a magic 32-bit value in the field to
avoid interoperability issues if a different implementation choses the
same type for its own experimental field. The value will be changed on
incompatible changes to avoid issues between two different chrony
versions.
commit 125d7a5c320c58429586135dab393767f5375917
Author: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
Date: Mon Nov 8 16:35:47 2021 +0100
ntp: prepare for non-authentication extension fields
Add a new variable to the packet info structure with flags for extension
fields included in received packets and add a new parameter to
transmit_packet() to add the fields to transmitted packets.
commit 36356ef03392a4f09cbbec448c7233b656574ee0
Author: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
Date: Mon Nov 8 16:06:03 2021 +0100
ntp: move initial packet parsing from ntp_auth to ntp_core
Since commit fdfcabd79bd3 ("ntp: drop support for long NTPv4 MACs"), the
parser doesn't need to check validify of MACs in NTPv4 packets to
distinguish them from extension fields. Move the parser to ntp_core to
avoid having a separate iteration looking for non-authentication
extension fields.
-----------------------------------------------------------------------
Summary of changes:
candm.h | 1 +
client.c | 1 +
cmdmon.c | 2 +
cmdparse.c | 12 ++
doc/chrony.conf.adoc | 19 +++
ntp.h | 25 ++++
ntp_auth.c | 109 -----------------
ntp_auth.h | 3 -
ntp_core.c | 283 +++++++++++++++++++++++++++++++++++++++++---
nts_ntp.h | 5 -
nts_ntp_client.c | 2 +-
nts_ntp_server.c | 2 +-
sourcestats.c | 16 +++
sourcestats.h | 4 +
srcparams.h | 1 +
test/simulation/144-exp1 | 55 +++++++++
test/simulation/test.common | 4 +-
test/unit/ntp_auth.c | 14 +--
test/unit/ntp_core.c | 93 ++++++++++++++-
test/unit/util.c | 18 ++-
util.c | 41 +++++++
util.h | 6 +
22 files changed, 570 insertions(+), 146 deletions(-)
create mode 100755 test/simulation/144-exp1
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