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<h3>
Gary E. Miller pushed to branch master
at <a href="https://gitlab.com/NTPsec/ntpsec">NTPsec / ntpsec</a>
</h3>
<h4>
Commits:
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<strong><a href="https://gitlab.com/NTPsec/ntpsec/commit/7d49f80d0b6eda195443353f2db84fc7bea30f28">7d49f80d</a></strong>
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<span>by Gary E. Miller</span>
<i>at 2017-09-14T02:08:13Z</i>
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<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">refclock_nmea: provisional fix for issue #62.
In the NMEA refclock, when PPS is lost, the peer jitter was left at the
low value calculated for PPS. This jitter is now used for NMEA. So
the NMEA time is wrongly thought to be PPS precise. This caused the
selection algorithm to wrongly pick NMEA over other better sources.
The fix is to reset the jitter when PPS is lost.
</pre>
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<h4>1 changed file:</h4>
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<a href="#5116cd240ac02e5b8f7233da45bd6b9b8b29ccf8">
ntpd/refclock_nmea.c
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<h4>Changes:</h4>
<li id="5116cd240ac02e5b8f7233da45bd6b9b8b29ccf8">
<a href="https://gitlab.com/NTPsec/ntpsec/commit/7d49f80d0b6eda195443353f2db84fc7bea30f28#5116cd240ac02e5b8f7233da45bd6b9b8b29ccf8"><strong>ntpd/refclock_nmea.c</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1136,6 +1136,15 @@ nmea_poll(</td>
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<pre style="margin: 0;"> <span id="LC1136" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * for now.</span></span>
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<pre style="margin: 0;"> <span id="LC1137" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> */</span></span>
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<pre style="margin: 0;"> <span id="LC1138" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">up</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">ppsapi_gate</span><span class="p">)</span> <span class="p">{</span></span>
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<pre style="margin: 0;">+<span id="LC1139" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span> <span class="n" style="color: #333;">FLAG_PPS</span> <span class="o" style="font-weight: 600;">&</span> <span class="n" style="color: #333;">peer</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">cfg</span><span class="p">.</span><span class="n" style="color: #333;">flags</span> <span class="p">)</span> <span class="p">{</span></span>
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<pre style="margin: 0;">+<span id="LC1140" class="line" lang="c"> <span class="cm" style="color: #998; font-style: italic;">/*</span></span>
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<pre style="margin: 0;">+<span id="LC1141" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * PPS just turned off, reset jitter to prevent</span></span>
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<pre style="margin: 0;">+<span id="LC1142" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * thinking the NMEA is PPS precise and thus</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1143" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC1143" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * being wrongly seelcted when better time is</span></span>
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<pre style="margin: 0;">+<span id="LC1144" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * available elsewhere</span></span>
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<pre style="margin: 0;">+<span id="LC1145" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> */</span></span>
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<pre style="margin: 0;">+<span id="LC1146" class="line" lang="c"> <span class="n" style="color: #333;">peer</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">jitter</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">LOGTOD</span><span class="p">(</span><span class="n" style="color: #333;">PRECISION</span><span class="p">);</span></span>
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<pre style="margin: 0;">+<span id="LC1147" class="line" lang="c"> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC1148" class="line" lang="c"> <span class="n" style="color: #333;">peer</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">cfg</span><span class="p">.</span><span class="n" style="color: #333;">flags</span> <span class="o" style="font-weight: 600;">&=</span> <span class="o" style="font-weight: 600;">~</span><span class="n" style="color: #333;">FLAG_PPS</span><span class="p">;</span></span>
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<pre style="margin: 0;"> <span id="LC1149" class="line" lang="c"> <span class="n" style="color: #333;">peer</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">precision</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">PRECISION</span><span class="p">;</span></span>
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<pre style="margin: 0;"> <span id="LC1150" class="line" lang="c"> <span class="p">}</span> <span class="k" style="font-weight: 600;">else</span> <span class="p">{</span></span>
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