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telecom: Add a configuration option for G.8275.defaultDS.localPriority. 

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
master
Richard Cochran 2017-02-14 19:55:51 +01:00
parent f848a30a3e
commit c7fb525721
5 changed files with 19 additions and 1 deletions
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3
clock.c
View File

@ -931,7 +931,8 @@ struct clock *clock_create(enum clock_type type, struct config *config,
c->dds.flags & DDS_SLAVE_ONLY) {
c->dds.clockQuality.clockClass = 255;
}
c->default_dataset.localPriority = 128;
c->default_dataset.localPriority =
config_get_int(config, NULL, "G.8275.defaultDS.localPriority");
/* Harmonize the twoStepFlag with the time_stamping option. */
if (config_harmonize_onestep(config)) {

1
config.c
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@ -192,6 +192,7 @@ struct config_item config_tab[] = {
PORT_ITEM_INT("follow_up_info", 0, 0, 1),
GLOB_ITEM_INT("free_running", 0, 0, 1),
PORT_ITEM_INT("freq_est_interval", 1, 0, INT_MAX),
GLOB_ITEM_INT("G.8275.defaultDS.localPriority", 128, 1, UINT8_MAX),
GLOB_ITEM_INT("gmCapable", 1, 0, 1),
PORT_ITEM_INT("hybrid_e2e", 0, 0, 1),
PORT_ITEM_INT("ignore_transport_specific", 0, 0, 1),

1
default.cfg
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@ -15,6 +15,7 @@ free_running 0
freq_est_interval 1
dscp_event 0
dscp_general 0
G.8275.defaultDS.localPriority 128
#
# Port Data Set
#

1
gPTP.cfg
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@ -13,6 +13,7 @@ clockAccuracy 0xFE
offsetScaledLogVariance 0xFFFF
free_running 0
freq_est_interval 1
G.8275.defaultDS.localPriority 128
#
# Port Data Set
#

14
ptp4l.8
View File

@ -341,6 +341,20 @@ The offsetScaledLogVariance attribute of the local clock. It characterizes the
stability of the clock.
The default is 0xFFFF.
.TP
.B G.8275.defaultDS.localPriority
The Telecom Profiles (ITU-T G.8275.1 and G.8275.2) specify an
alternate Best Master Clock Algorithm (BMCA) with a unique data set
comparison algorithm. The value of this option is associated with the
local clock and is used as a tie breaker whenever clockClass,
clockAccuracy, offsetScaledLogVariance, and priority2 are equal. This
option is only used when "dataset_comparison" is set to "telecom".
The default value is 128.
Warning: the BMCA is guaranteed to produce a spanning tree (that is, a
timing network without loops) only when using the default values of
G.8275.defaultDS.localPriority and G.8275.portDS.localPriority.
Careful network engineering is needed when using non-default values.
.TP
.B domainNumber
The domain attribute of the local clock.
The default is 0.