DWS/chrony
1
0
Fork 0
mirror of https://gitlab.com/chrony/chrony.git synced 2025-12-03 23:05:06 -05:00
Code Issues Packages Projects Releases Wiki Activity

sources: add configurable limits for stratum

Browse Source 
Add minstratum and maxstratum directives to specify the minimum and
maximum allowed stratum of sources to be selected. The default values
are 0 and 15 respectively, allowing all NTP sources and refclocks.

Sources that are rejected due to having too large or too small stratum
are marked with 'r' in the selection log and selectdata report.

This is similar to the "tos floor" and "tos ceiling" settings of ntpd,
except that maxstratum is interpreted as one below the ceiling.
This commit is contained in:
Miroslav Lichvar
2025-11-04 11:39:40 +01:00
parent c252e52ee2
commit 2da8fbc4c3
7 changed files with 108 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
conf.c
View File

@@ -115,6 +115,8 @@ static double clock_precision = 0.0; /* in seconds */
static SRC_AuthSelectMode authselect_mode = SRC_AUTHSELECT_MIX;
static double max_distance = 3.0;
static double max_jitter = 1.0;
static int max_stratum = NTP_MAX_STRATUM - 1;
static int min_stratum = 0;
static double reselect_distance = 1e-4;
static double stratum_weight = 1e-3;
static double combine_limit = 3.0;
@@ -702,12 +704,16 @@ CNF_ParseLine(const char *filename, int number, char *line)
parse_int(p, &max_samples, 0, INT_MAX);
} else if (!strcasecmp(command, "maxslewrate")) {
parse_double(p, &max_slew_rate);
} else if (!strcasecmp(command, "maxstratum")) {
parse_int(p, &max_stratum, 0, INT_MAX);
} else if (!strcasecmp(command, "maxupdateskew")) {
parse_double(p, &max_update_skew);
} else if (!strcasecmp(command, "minsamples")) {
parse_int(p, &min_samples, 0, INT_MAX);
} else if (!strcasecmp(command, "minsources")) {
parse_int(p, &min_sources, 1, INT_MAX);
} else if (!strcasecmp(command, "minstratum")) {
parse_int(p, &min_stratum, 0, INT_MAX);
} else if (!strcasecmp(command, "nocerttimecheck")) {
parse_int(p, &no_cert_time_check, 0, INT_MAX);
} else if (!strcasecmp(command, "noclientlog")) {
@@ -2311,6 +2317,22 @@ CNF_GetMaxJitter(void)
/* ================================================== */
int
CNF_GetMaxStratum(void)
{
return max_stratum;
}
/* ================================================== */
int
CNF_GetMinStratum(void)
{
return min_stratum;
}
/* ================================================== */
double
CNF_GetReselectDistance(void)
{