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ntp: limit total monotonic offset correction

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In addition to the 16s limit in per-response change in the monotonic
offset, don't allow the total accumulated offset injected in sourcestats
to be larger than 16 seconds.
This commit is contained in:
Miroslav Lichvar
2021-12-02 10:56:26 +01:00
parent 1c1ca1d12f
commit af611b5842
1 changed files with 2 additions and 2 deletions
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4
ntp_core.c
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@@ -1660,11 +1660,11 @@ process_sample(NCR_Instance inst, NTP_Sample *sample)
error_in_estimate = fabs(-sample->offset - estimated_offset); error_in_estimate = fabs(-sample->offset - estimated_offset);
if (inst->mono_doffset != 0.0) { if (inst->mono_doffset != 0.0 && fabs(inst->mono_doffset) <= MAX_MONO_DOFFSET) {
DEBUG_LOG("Monotonic correction offset=%.9f", inst->mono_doffset); DEBUG_LOG("Monotonic correction offset=%.9f", inst->mono_doffset);
SST_CorrectOffset(SRC_GetSourcestats(inst->source), inst->mono_doffset); SST_CorrectOffset(SRC_GetSourcestats(inst->source), inst->mono_doffset);
inst->mono_doffset = 0.0;
} }
inst->mono_doffset = 0.0;
SRC_AccumulateSample(inst->source, sample); SRC_AccumulateSample(inst->source, sample);
SRC_SelectSource(inst->source); SRC_SelectSource(inst->source);