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Add refclock option for delay

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This is useful when refclocks don't agree on time, increasing the
delay will widen the interval used in the source selection algorithm.
This commit is contained in:
Miroslav Lichvar 2009-10-27 14:02:16 +01:00
parent 48b6c2aa6b
commit 5b4e07d658
3 changed files with 10 additions and 2 deletions
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7
conf.c
View file

@ -431,7 +431,7 @@ parse_refclock(const char *line)
{
int i, n, poll, dpoll, filter_length;
unsigned long ref_id;
double offset;
double offset, delay;
const char *tmp;
char name[5], cmd[10 + 1], *param;
unsigned char ref[5];
@ -444,6 +444,7 @@ parse_refclock(const char *line)
dpoll = 0;
filter_length = 15;
offset = 0.0;
delay = 1e-9;
ref_id = 0;
if (sscanf(line, "%4s%n", name, &n) != 1) {
@ -488,6 +489,9 @@ parse_refclock(const char *line)
} else if (!strncasecmp(cmd, "offset", 6)) {
if (sscanf(line, "%lf%n", &offset, &n) != 1)
break;
} else if (!strncasecmp(cmd, "delay", 5)) {
if (sscanf(line, "%lf%n", &delay, &n) != 1)
break;
} else {
LOG(LOGS_WARN, LOGF_Configure, "Unknown refclock parameter %s at line %d", cmd, line_number);
break;
@ -501,6 +505,7 @@ parse_refclock(const char *line)
refclock_sources[i].poll = poll;
refclock_sources[i].filter_length = filter_length;
refclock_sources[i].offset = offset;
refclock_sources[i].delay = delay;
refclock_sources[i].ref_id = ref_id;
n_refclock_sources++;

4
refclock.c
View file

@ -62,6 +62,7 @@ struct RCL_Instance_Record {
struct MedianFilter filter;
unsigned long ref_id;
double offset;
double delay;
SCH_TimeoutID timeout_id;
SRC_Instance source;
};
@ -132,6 +133,7 @@ RCL_AddRefclock(RefclockParameters *params)
inst->driver_polled = 0;
inst->leap_status = 0;
inst->offset = params->offset;
inst->delay = params->delay;
inst->timeout_id = -1;
inst->source = NULL;
@ -269,7 +271,7 @@ poll_timeout(void *arg)
#endif
SRC_SetReachable(inst->source);
SRC_AccumulateSample(inst->source, &sample_time, offset,
1e-9, dispersion, 1e-9, dispersion, 0, inst->leap_status);
inst->delay, dispersion, inst->delay, dispersion, 0, inst->leap_status);
inst->missed_samples = 0;
} else {
inst->missed_samples++;

1
refclock.h
View file

@ -39,6 +39,7 @@ typedef struct {
int filter_length;
unsigned long ref_id;
double offset;
double delay;
} RefclockParameters;
typedef struct RCL_Instance_Record *RCL_Instance;