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refclock: add option to treat non-PPS refclocks as PPS

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Add pps option to the refclock directive to force chronyd to treat any
refclock as a PPS refclock. This is intended for refclocks that may
provide time off by a whole number of seconds due to missing or wrong
TAI/GPS->UTC conversion.
This commit is contained in:
Miroslav Lichvar
2017-05-11 13:58:17 +02:00
parent cff15f91d4
commit f31f68ae8e
3 changed files with 12 additions and 1 deletions
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7
conf.c
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@@ -674,7 +674,7 @@ static void
parse_refclock(char *line)
{
int n, poll, dpoll, filter_length, pps_rate, min_samples, max_samples, sel_options;
int max_lock_age;
int max_lock_age, pps_forced;
uint32_t ref_id, lock_ref_id;
double offset, delay, precision, max_dispersion;
char *p, *cmd, *name, *param;
@@ -684,6 +684,7 @@ parse_refclock(char *line)
poll = 4;
dpoll = 0;
filter_length = 64;
pps_forced = 0;
pps_rate = 0;
min_samples = SRC_DEFAULT_MINSAMPLES;
max_samples = SRC_DEFAULT_MAXSAMPLES;
@@ -756,6 +757,9 @@ parse_refclock(char *line)
} else if (!strcasecmp(cmd, "delay")) {
if (sscanf(line, "%lf%n", &delay, &n) != 1)
break;
} else if (!strcasecmp(cmd, "pps")) {
n = 0;
pps_forced = 1;
} else if (!strcasecmp(cmd, "precision")) {
if (sscanf(line, "%lf%n", &precision, &n) != 1)
break;
@@ -791,6 +795,7 @@ parse_refclock(char *line)
refclock->driver_poll = dpoll;
refclock->poll = poll;
refclock->filter_length = filter_length;
refclock->pps_forced = pps_forced;
refclock->pps_rate = pps_rate;
refclock->min_samples = min_samples;
refclock->max_samples = max_samples;