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158 commits

Author SHA1 Message Date
Miroslav Lichvar
a646cf7923 logging: convert rate limited messages to debug messages 2014-06-04 12:26:27 +02:00
Miroslav Lichvar
3f3ebd3b3b ntp: update comment in get_transmit_delay() 2014-06-03 18:10:27 +02:00
Miroslav Lichvar
3ebebac695 ntp: reset NCR instance thoroughly when switching to offline 2014-06-02 16:46:53 +02:00
Miroslav Lichvar
779e40ed66 ntp: delay initial transmission until first resolving ends 
This will be needed to prevent loading of dump files after sources have
already accumulated samples and possibly reference was already updated
when async resolving of sources is implemented.
 2014-04-29 12:42:45 +02:00
Miroslav Lichvar
08faca03b7 ntp: close client socket when offline 2014-04-10 18:02:29 +02:00
Miroslav Lichvar
3217421797 ntp: close only client socket when destroying NCR instance 2014-04-10 17:50:24 +02:00
Miroslav Lichvar
8671002bd7 sources: add flag that source is active 
When source is set as active, it's receiving reachability updates (e.g.
offline NTP sources are not active).

Also add function to count active sources.
 2014-04-10 17:48:58 +02:00
Miroslav Lichvar
bc6b40568d ntp: reduce burst timeout to 2.0 
With the new special mode ending it can be now equal to the burst
polling interval.
 2014-04-10 17:16:30 +02:00
Miroslav Lichvar
60d8586b6d ntp: reduce burst timeout to 2.5 seconds 
This reduces the maximum time initstepslew can take.
 2014-04-09 09:59:58 +02:00
Miroslav Lichvar
70928dba52 ntp: set maximum number of iburst samples to size of reach register 
Explicitly set the number of iburst samples to the size of the register
to make sure there are at least 7 reachability updates and the
initstepslew mode can be ended.
 2014-04-09 09:59:57 +02:00
Miroslav Lichvar
0094128ca6 sources: split source selection from sample accumulation 
This will allow postponing source selection and reference update, which
could be useful in burst modes.
 2014-04-08 17:00:47 +02:00
Miroslav Lichvar
73e4986866 ntp: fix comment on NCR_ProcessUnknown 2014-03-26 11:24:25 +01:00
Miroslav Lichvar
91e74c704b ntp: accept packets from unknown sources only from server sockets 2014-03-26 11:18:18 +01:00
Miroslav Lichvar
cf12d72f21 ntp: use separate connected sockets for each server 
If acquisitionport is set to 0 (default), create and connect a new
socket for each server instead of using one socket per address family
for all servers.
 2014-03-25 15:27:18 +01:00
Miroslav Lichvar
f2c4ab09a8 ntp: check if packet was received by right socket 2014-03-25 15:24:38 +01:00
Miroslav Lichvar
9a657cd4a3 ntp: store socket in NTP instance 
This is preparation for separate client sockets.
 2014-03-25 15:22:59 +01:00
Miroslav Lichvar
308de81221 ntp: split local_ip_addr from NTP_Remote_Address struct 2014-03-25 11:34:35 +01:00
Miroslav Lichvar
7aa4bbf621 ntp: set minpoll from received KoD RATE at most to 10 
Limit changing minpoll to a reasonable maximum in case the server is
broken or temporarily misconfigured.
 2014-03-21 15:32:14 +01:00
Miroslav Lichvar
5afddad0d2 ntp: print warning when source is added with unknown key 2014-03-21 14:36:51 +01:00
Miroslav Lichvar
0380cf0c76 ntp: reset negative minpoll or maxpoll to default values 2014-03-21 13:25:14 +01:00
Miroslav Lichvar
8d02e5f680 ntp: make use of NCR_ProcessUnknown in NCR_ProcessKnown 
After recent changes the code in NCR_ProcessKnown is now identical and
can be replaced with NCR_ProcessUnknown call.
 2014-03-21 13:20:34 +01:00
Miroslav Lichvar
f9e2213afd ntp: don't store tx time stamp when replying to known source 2014-03-21 13:20:31 +01:00
Miroslav Lichvar
8b362ba3e7 ntp: don't reply to known source if missing key or invalid auth 
This is now similar to replying to unknown sources.
 2014-03-21 13:20:29 +01:00
Miroslav Lichvar
a26058d425 ntp: don't send requests with unknown key 
There is no point in sending a request if the configured key is missing.
A reply would be ignored anyway.
 2014-03-21 13:20:27 +01:00
Miroslav Lichvar
c14b81f3a9 ntp: remove unnecessary KEY_KeyKnown calls 2014-03-21 13:20:25 +01:00
Miroslav Lichvar
54211f0f6e Update comment on setting poll in reply packet 2014-01-17 18:10:32 +01:00
Miroslav Lichvar
4b5f465026 Don't allow maxpoll to be set shorter than minpoll 2014-01-17 17:37:07 +01:00
Miroslav Lichvar
8df1bedb1b Remove forgotten macros 2013-11-27 16:11:19 +01:00
Miroslav Lichvar
1c3aff37de Convert TRACEON LOG messages to DEBUG_LOG 2013-11-27 14:35:41 +01:00
Miroslav Lichvar
0731cd6950 Fix log messages 2013-11-26 18:41:51 +01:00
Miroslav Lichvar
922e2fe23b Fix Clang static analyzer warnings about never read values 2013-10-07 17:50:27 +02:00
Miroslav Lichvar
d5b737cce8 Update copyright years 2013-06-19 12:50:26 +02:00
Miroslav Lichvar
9666831818 Use UTI_DiffTimevalsToDouble to calculate theta 2013-06-12 15:30:28 +02:00
Miroslav Lichvar
ff8e04f9ba Fix fabs use on delay 2013-06-12 15:30:28 +02:00
Miroslav Lichvar
8aa9eb19c8 Remove unnecessary adjtimex calls 2013-06-06 19:38:36 +02:00
Miroslav Lichvar
2ceb3c89ca Move NTP_int32 conversion functions to util.c 2013-06-05 12:49:47 +02:00
Miroslav Lichvar
32bf32e7d5 Don't use uninitialized value in receive_packet() 2013-06-05 09:56:37 +02:00
Miroslav Lichvar
cce7a5f15e Improve peer polling in symmetric mode 
If the remote stratum is higher than ours, try to lock on the peer's
polling to minimize our response time by slightly extending our delay or
waiting for the peer to catch up with us as the random part in the
actual interval is reduced. If the remote stratum is equal to ours, try
to interleave evenly with the peer.
 2013-06-05 09:32:20 +02:00
Miroslav Lichvar
288043c13b Save remote poll only with valid packets 2013-06-04 15:43:59 +02:00
Miroslav Lichvar
78ae4ebfaa Fix peer polling with shorter remote poll 
If the remote peer uses a polling interval shorter than the local
minimum, the local peer will be unable to send any packets as the
timeout will be updated on every received valid packet and will never
expire.

Modify the delay calculation to aim at poll interval away since the last
transmit.

Also, share the delay calculation code with transmit_timeout().
 2013-06-04 12:52:49 +02:00
Miroslav Lichvar
cf700a0084 Requeue transmit timeout only with valid packets 2013-06-04 12:45:47 +02:00
Miroslav Lichvar
60a25f6e71 Ignore packets from offline sources 
Rework the logic in transmit_timeout() to change the online status on
the following timeout to allow ignoring packets from offline sources.
 2013-06-03 18:57:55 +02:00
Miroslav Lichvar
030e3b2dab Make receive_packet() more readable 2013-06-03 16:03:07 +02:00
Miroslav Lichvar
5079f6bbff In burst count only accumulated samples as good 2013-06-03 16:03:07 +02:00
Miroslav Lichvar
afceb9d24e Slew only non-zero local timestamps in ntp core 2013-06-03 16:03:07 +02:00
Miroslav Lichvar
a2656a20bc Fix poll timeout with symmetric peer and poll 0 2013-06-03 16:03:05 +02:00
Miroslav Lichvar
359d444343 Remove unncessary return statements 2013-05-21 15:08:34 +02:00
Miroslav Lichvar
ebae435398 Log online/offline status change for burst sources too. 2013-05-15 11:03:18 +02:00
Miroslav Lichvar
73d4eaafbb Reply to NTPv1 and NTPv2 packets with same version 2013-05-02 11:10:48 +02:00
Miroslav Lichvar
cf00179964 Reply to NTPv1 packets 2013-05-02 11:10:25 +02:00
Miroslav Lichvar
0bb772c575 Fix delta calculation with extreme frequency offsets 
This should prevent chronyd from getting stuck and refusing new samples
due to failing test4 when the current measured frequency offset is close
to 1.0. That can happen when the system clock is stepped forward behind
chronyd's back.
 2013-03-08 14:39:13 +01:00
Miroslav Lichvar
df6c2a432f Fuzz transmit timestamp 
Add random bits below clock precision to the timestamp to make
it less predictable.
 2012-05-23 12:06:16 +02:00
Miroslav Lichvar
0c738d84af Update copyright years 2012-02-28 13:11:56 +01:00
Miroslav Lichvar
777303f130 Add support for different authentication hashes 
Allow different hash functions to be used in the NTP and cmdmon
protocols. This breaks the cmdmon protocol compatibility. Extended key
file format is used to specify the hash functions for chronyd and new
authhash command is added to chronyc. MD5 is the default and the only
function included in the chrony source code, other functions will be
available from libraries.
 2011-11-02 13:53:00 +01:00
Miroslav Lichvar
cc3f5962b8 Merge NCR_Process functions 2011-09-01 16:25:13 +02:00
Miroslav Lichvar
5c36342958 Use initial delay also for burst samples 2011-08-26 18:34:00 +02:00
Miroslav Lichvar
27b0b5824a Disable maxdelayratio test by default 
Change default maxdelayratio from 16384.0 to 0.0. A value larger
than 1.0 is required to enable the test.
 2011-08-12 15:38:05 +02:00
Miroslav Lichvar
1d72d22bc5 Match skew in ntp_core to sourcestats skew 2011-08-12 15:38:05 +02:00
Miroslav Lichvar
1b8547059a Set leap status by enum 2011-06-13 17:02:42 +02:00
Miroslav Lichvar
91279a0f28 Store reference IDs in uint32_t 2011-06-13 15:34:16 +02:00
Miroslav Lichvar
8cc7ebffa9 Accept packets with compatible NTP versions 
All incoming NTP packets are now required to have version 2, 3 or 4.
 2011-05-25 16:59:40 +02:00
Miroslav Lichvar
da2c8d9076 Use config.h 2011-05-24 18:07:06 +02:00
Miroslav Lichvar
896dad9224 Fix warnings produced by latest gcc 2011-02-15 18:55:34 +01:00
Miroslav Lichvar
e8c5d15690 Remove CVS headers 2011-01-28 12:56:09 +01:00
Miroslav Lichvar
e63cba05b2 Update copyright 2011-01-27 13:05:26 +01:00
Miroslav Lichvar
930a41b845 Don't send packet in last auto_offline transmit timeout 2010-12-17 18:09:10 +01:00
Miroslav Lichvar
323f0d187e Fix switching offline auto_offline source to online 2010-12-17 18:09:10 +01:00
Miroslav Lichvar
0c4968ec51 Track reachability in sources module 
Add new flag to source struct to indicate when source is selectable
(packets with good headers are received) and use a reachability
register for last 8 samples instead of the reachable flag. Source
drivers now provide only reachability updates.
 2010-12-17 13:22:29 +01:00
Miroslav Lichvar
833022b745 Add small randomness to spacing between samples for one server 2010-12-09 16:06:42 +01:00
Miroslav Lichvar
d1b820e7e3 Shorten initial delay and sampling separation to 0.2 seconds 2010-12-09 15:14:05 +01:00
Miroslav Lichvar
8b93e1a780 Slowly back off sampling rate when selected source loses connectivity 2010-12-07 16:47:57 +01:00
Miroslav Lichvar
4e318c1abc Require valid_header before accumulating sample 
Split test7 into two and to accumulate the sample require that all tests
pass, except the one which checks packet stratum is not higher than ours.

Also, don't mark the source as unreachable when only test4c fails.
 2010-12-07 16:47:57 +01:00
Miroslav Lichvar
6ed5a65064 Add maxdelaydevratio command 2010-12-07 16:47:57 +01:00
Miroslav Lichvar
b977c95be4 Add test for ratio of increase in delay to stddev 
Require that the ratio of the increase in delay from the minimum one in
the stats data register to the standard deviation of the offsets in the
register is less than maxdelaydevratio or the difference between
measured offset and predicted offset is larger than the increase in
delay. In the allowed delay increase is included also skew and maximum
clock frequency error.

maxdelaydevratio is 10.0 by default.
 2010-12-07 16:47:57 +01:00
Miroslav Lichvar
bed5b72cbe Add polltarget command 2010-10-14 15:08:35 +02:00
Miroslav Lichvar
7a6ee1d729 Base poll adjustment on number of sourcestats samples 
Instead of following skew changes, adjust polling interval so that the
number of measurements used in the regression algorithm remains close to
a target value. It can be configured with a new polltarget option
(6 by default).
 2010-10-13 16:49:28 +02:00
Miroslav Lichvar
f924862e89 Add prefer and noselect options 2010-08-25 18:32:40 +02:00
Miroslav Lichvar
78300d018a Add minstratum command 2010-08-25 17:43:17 +02:00
Benny Lyne Amorsen
c8fe69c956 Add minstratum option 
Stratum in received packets is raised to the configured minimum.
 2010-08-25 12:46:14 +02:00
Miroslav Lichvar
6b0198c2d7 Replace all CROAK calls with assert or LOG_FATAL 
Remove croak() and use assert() or LOG_FATAL() everywhere. Hopefully
the problems with debugging mentioned in the croak() comment are long gone.
 2010-08-12 14:30:05 +02:00
Miroslav Lichvar
40d82675bd Make use of UTI_AdjustTimeval in slew handlers 2010-05-07 18:52:05 +02:00
Miroslav Lichvar
2458325c09 Merge NSR/NCR server and peer functions 2010-04-27 14:35:27 +02:00
Miroslav Lichvar
93b5b08bed Add iburst server option 2010-04-27 14:35:27 +02:00
Miroslav Lichvar
74cb1c877c Mark source unreachable after offline burst 2010-04-27 14:35:27 +02:00
Miroslav Lichvar
a949ab6935 Increase burst polling interval 
To avoid getting KoD RATE from NTP server (triggering discard minimum 1)
when burst sampling, increase polling interval to 2 seconds.
 2010-04-27 14:35:27 +02:00
Miroslav Lichvar
f0fd7099c0 Stop burst sampling when received KoD RATE 2010-04-27 14:35:27 +02:00
Miroslav Lichvar
e78e65ef22 Refactor file logging 2010-04-13 15:16:41 +02:00
Miroslav Lichvar
2ea87490f4 Mark offline sources unreachable 2010-04-02 15:55:58 +02:00
Miroslav Lichvar
8cb6fcad7e Include offset correction error in dispersion 2010-02-16 18:38:46 +01:00
Miroslav Lichvar
20d898d182 Prepare for handling offset correction error 2010-02-16 17:46:42 +01:00
Miroslav Lichvar
032ac800aa Limit rate of syslog messages 
Error messages caused by incoming packets need to be rate limited
to avoid filling up disk space.
 2010-02-04 13:07:19 +01:00
Miroslav Lichvar
a6e532442b Initialize local_ntp_tx in ntp_core 
This fixes another valgrind error.
 2010-02-04 12:42:48 +01:00
Miroslav Lichvar
e88af337cd Don't set NTP source as reachable when reply doesn't have valid data 
This fixes using uninitialized sourcestats values when selecting source.
 2009-11-12 15:07:36 +01:00
Miroslav Lichvar
8e23110aec Update COPYING and FSF address 2009-10-28 17:53:33 +01:00
Miroslav Lichvar
f7e08d0c30 Update copyrights 2009-10-28 17:53:10 +01:00
Miroslav Lichvar
48b6c2aa6b Reduce size of NTP sources hash table 
IPv6 addressing significantly increased size of the table,
keep only pointers to get it back.
 2009-10-13 17:16:41 +02:00
Miroslav Lichvar
8265ff2890 Add IPv6 support 2009-10-13 14:44:33 +02:00
Miroslav Lichvar
183d56fd40 Don't use uninitialized values 
This fixes a bunch or valgrind errors.
 2009-10-13 14:43:47 +02:00
Miroslav Lichvar
923c58485f Add client support for Kiss-of-Death RATE 
This adds support for RATE code which can be used in reply from NTP
server to reduce client's polling.
 2009-06-30 18:01:55 +02:00
Miroslav Lichvar
ac30bb06ef Add support for reference clocks 2009-05-05 23:05:59 +02:00