Add a configuration file option for the extra sync-fup check.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>master
parent
7b7e046e91
commit
b7ebfab0cc
6
config.c
6
config.c
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@ -301,6 +301,12 @@ static enum parser_result parse_global_setting(const char *option,
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return r;
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*cfg->tx_timestamp_timeout = val;
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} else if (!strcmp(option, "check_fup_sync")) {
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r = get_ranged_int(value, &val, 0, 1);
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if (r != PARSED_OK)
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return r;
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*cfg->check_fup_sync = val;
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} else if (!strcmp(option, "pi_proportional_const")) {
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r = get_ranged_double(value, &df, 0.0, DBL_MAX);
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if (r != PARSED_OK)
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1
config.h
1
config.h
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@ -70,6 +70,7 @@ struct config {
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struct port_defaults pod;
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int *assume_two_step;
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int *tx_timestamp_timeout;
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int *check_fup_sync;
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enum servo_type clock_servo;
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@ -36,6 +36,7 @@ use_syslog 1
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verbose 0
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summary_interval 0
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kernel_leap 1
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check_fup_sync 0
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#
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# Servo Options
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#
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1
gPTP.cfg
1
gPTP.cfg
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@ -35,6 +35,7 @@ use_syslog 1
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verbose 0
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summary_interval 0
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kernel_leap 1
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check_fup_sync 0
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#
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# Servo options
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#
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12
ptp4l.8
12
ptp4l.8
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@ -255,6 +255,18 @@ The number of milliseconds to poll waiting for the tx time stamp from the kernel
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when a message has recently been sent.
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The default is 1.
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.TP
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.B check_fup_sync
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Because of packet reordering that can occur in the network, in the
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hardware, or in the networking stack, a follow up message can appear
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to arrive in the application before the matching sync message. As this
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is a normal occurrence, and the sequenceID message field ensures
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proper matching, the ptp4l program accepts out of order packets. This
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option adds an additional check using the software time stamps from
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the networking stack to verify that the sync message did arrive
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first. This option is only useful if you do not trust the sequence IDs
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generated by the master.
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The default is 0 (disabled).
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.TP
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.B clock_servo
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The servo which is used to synchronize the local clock. Currently only one
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servo is implemented, a PI controller.
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